FR3065143B1 - SYSTEM FOR RECORDING A PHYSICAL PARAMETER, SUCH AS TEMPERATURE, OF A PRODUCT - Google Patents

Abstract

The invention relates to a system for recording (1) a physical parameter, such as the temperature, of a product. Said system comprises means (8) for measuring the value of said physical parameter, such as a temperature sensor, as a function of time, a memory (13) for recording the values of said physical parameter as a function of time; radio communication means (12) configured to connect to a radio connection point connected to the Internet and, in the state connected to said radio connection point, transmitting data to a server, a brightness sensor (9) . A control unit (11) is configured to: - store in the memory (13) the measured values of said physical parameter as a function of time; - Control said radio communication means (12) according to the brightness measured or detected by the brightness sensor (9).

Description

FIELD OF THE INVENTION

The present invention relates generally to systems and methods for measuring and recording a physical parameter, such as temperature, over time.

PRIOR ART

The state of the art is known of systems, usually called data loggers, which make it possible to measure the temperature of the environment in which they are located and to record the temperature values measured during time. The data logger can be used to track the temperature of a product with which the logger is associated. Said recorder is associated with said product by being located close to said product in the same container, for example a carton, intended to be transported from a shipping location to a given destination.

Such a recorder makes it possible to monitor, for example, the temperature variations of a temperature-sensitive product, such as a pharmaceutical, medical or food product, in order to be able to check whether the cold chain has been respected or not during the transport of the product. .

When the recipient receives the container, he retrieves the product and the corresponding recorder. The temperature data recorded by the recorder are loaded on a computer of the recipient who must transmit them to the sender so that the latter verifies, in order to release or not the products (i.e. take responsibility for the issue or request the return of the products), whether the temperature variations to which the product has been subjected are acceptable or not. The temperature data recorded by the recorder is loaded on a recipient's computer to allow the recipient to check whether the temperature variations to which the product has been subjected are acceptable or not.

However, it is observed that the recorders known in the state of the art prove to be tedious in use for the users, in particular when the recipient needs to recover the data recorded in the recorder for processing. In particular, the recipient user generally needs a computer and a specific connection, for example of the USB type, to connect the recorder to the computer and must have previously installed specific software for processing this data. . It is also desirable to be able to optimize the energy autonomy of the recording system in order to limit the risk of unloading which would render the system inoperative during its use.

The aim of the present invention is to propose a new system for recording a physical parameter and a corresponding method making it possible to overcome all or part of the problems set out above.

In particular, an object of the invention is to propose a new system for recording a physical parameter, which is easy to use and whose energy consumption is optimized.

SUMMARY OF THE INVENTION For this purpose, the invention relates to a system for recording a physical parameter, such as the temperature, of a product, characterized in that said system comprises: - means for measuring the value of said physical parameter, such as a temperature sensor, as a function of time; - a memory for recording the values of said physical parameter as a function of time; - radio communication means configured to connect to a radio connection point connected to the Internet and, in the state connected to said radio connection point, to transmit data to a server, - a brightness sensor, such as a photosensitive cell, - a control unit, such as a processor or microcontroller, configured to: - store in the memory the measured values of said physical parameter as a function of time; - controlling said radio communication means as a function of the brightness measured or detected by the brightness sensor.

Said recording system is intended to be housed with said product in a container, to be transported from a place of dispatch to a place of destination.

The combination of: a) the use of radio communication means to transmit the values of the physical parameter recorded over time to a server, and b) control of said radio communication means as a function of the brightness detected or measured by the light sensor not only makes it possible to simplify, in particular to automate, the operations of transmission of the data of the system with a view to their processing, thanks to the radio link which can be activated in a transparent manner for the user of the d recording, but also to preserve the autonomy of the system's power source by limiting cases of radio communication to situations where it is possible, even if it is not certain, that the container has been opened by the recipient.

Indeed, the detection or measurement of brightness makes it possible to determine whether the container of the system and of the product is open or closed, and thus to condition the triggering of the communication means when the container is open. In fact, as long as the container is closed, the product can be considered to be in the process of being dispatched or awaiting delivery to the recipient, so it is desirable that the system continues to record the temperature over time. However, the system does not need to communicate with the processing server since the delivery process has not been completed.

The term radio connection point connected to the internet means a device, such as an Internet access box provided with a WIFI module, also called a WIFI modem router, or a set of devices linked together, such as '' a WIFI access point connected to an Internet modem, allowing the system in the connected state by radio link to said device or said set of devices to access the Internet and to communicate with the server connected to the Internet .

Thanks to the radio link, data communication between the system and the server can be carried out without the user needing to establish a connection with a specific connection between the system and a recipient's computer or to transfer a memory card. from the system to a computer.

According to an advantageous characteristic of the invention, the control unit is configured to activate the radio communication means when the detected or measured brightness crosses upwards a predefined threshold value.

The condition of the activation of the radio communication means to the fact that the brightness crosses an ascending threshold value, that is to say when the container is opened, and therefore to let said radio communication means stop when the brightness is below a threshold value (which is generally the case during most of the product transport time), significantly saves the energy autonomy of the system while allowing to benefit, thanks to the radio communication technology of the system, great ease of use of the system in particular for transmitting the recorded data.

In other words, the potentially negative impact on the energy autonomy of the system which could result from the high energy consumption of radio communication means (compared to a wired link), is compensated for by the fact that the functioning of these communication means radio is conditioned by criteria or rules making it possible to prevent radio communication while the container is not open, and to limit such radio communication when the container is open but in a place which does not correspond to the place of destination which does not therefore does not allow the system to connect to the server.

As recalled above, the brightness detection makes it possible to determine whether the container is open or not. Except for certain special cases, such as customs clearance, a container has no reason to be opened during its shipment before being delivered to the recipient. Preventing the means of communication from operating until the package is opened allows the system energy not to be wasted.

However, as detailed below, there is provided a preferred embodiment according to which, after having activated the communication means due to a detection or measurement of brightness which exceeds a threshold value (from which it is deduced that the container has open), active maintenance of the means of communication is conditional on the system identifying a radio connection point connected to the Internet which is known to said system and / or to which said means of communication can be connected. In the absence of identification of such a known radio connection point and / or to which said means of communication can connect, it can be deduced therefrom that the container is not open at the addressee, the system can then stop automatically the radio communication means to avoid searching in loop for a known connection point which is present at the addressee but which does not exist in a place such as customs.

According to an advantageous characteristic of the invention, the recording system is configured to stop said means of communication after having communicated with the server, preferably after having received corresponding information from said server.

According to an advantageous characteristic of the invention, the control unit is configured to, preferably at least in the absence of a person acting on the system, leave said radio communication means stopped when the brightness detected or measured is less than a predefined threshold value.

According to an advantageous characteristic of the invention, the control unit is configured to, in the connected state of the recording system at said radio connection point following said ascending crossing of predefined brightness threshold value, transmit to the server the values of said physical parameter recorded as a function of time.

Thus the values of the physical parameter, which were measured and recorded during transport, are transmitted to the server when the product has arrived and has been unpackaged at the recipient.

The system can automatically stop the measurement and recording of the physical parameter when, by connecting to the radio connection point of the recipient, the system has provided the server with the measured and recorded data and has received from the server a corresponding confirmation of receipt information. .

According to an advantageous characteristic of the invention, said server being configured to process the data received and generate information relating to the result of this processing, such as information on compliance or non-compliance with the cold chain, the unit control is configured to receive, by said radio connection point, said processing result information.

According to an advantageous characteristic of the invention, the radio communication means comprise a WIFI communication module.

According to an advantageous characteristic of the invention, the control unit is configured to, in the event of failure of connection with said radio connection point or with the server, stop said radio communication means so as to no longer search for a point radio connection until an additional condition is met.

The condition of the activation of the communication means to the brightness and the condition of the activated maintenance of the communication means for the identification of a known radio connection point connected to the Internet and / or to which the system can connect , optimizes the use of means of communication and therefore the energy autonomy of the system. Indeed, this double condition of brightness and identification of the radio connection point makes it possible to ensure that the system, once dispatched, does not communicate with the server until the product has arrived and unpackaged at the recipient. Such a design makes it possible to prevent the means of communication from running out looking for an Internet connection point when this is not necessary. Such a design also allows the device not to communicate in places where it might not be allowed, such as an airplane in flight.

According to an advantageous characteristic of the invention, the additional condition making it possible to relaunch the search for a radio connection point, comprises the fact that the detected or measured brightness crosses upwards a predefined threshold value.

According to an advantageous characteristic of the invention, the additional condition enabling the search for the communication network to be restarted comprises pressing a given button of the recording system to reactivate the search for the network. The invention also relates to an assembly comprising: - a recording system as described above, - a radio connection point connected to the Internet and to which said radio communication means of the recording system are able to connect , and - a server connected to the Internet. The invention also relates to a method for monitoring a physical parameter, such as the temperature, of a product, using a recording system as described above, said recording system being placed in a container, such as a cardboard box, with said product, said container being opaque to light in the closed state, characterized in that said method comprises the following steps: - when the detected or measured luminosity crosses upwards a predefined threshold value, command the radio connection means to connect to a radio connection point connected to the Internet, - transmit to a server connected to the Internet, the values of said physical parameter recorded as a function of time in the memory; - receive result information relating to the processing of said data by the server; - preferably activate an information indicator based on the result information received.

In summary and according to one embodiment of the invention, the recording system forms a recorder which is self-communicating and benefits from radio communication technology, preferably according to the WIFI protocol, which is activated in certain light conditions. During this activation, the recorder seeks to connect to the Internet by this radio communication to transmit to a processing server all the data that it has measured. The server is configured to provide a web-based service for data management, recording and processing.

BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting and should be read with reference to the appended drawings, in which: - Figure 1 is a view in perspective of a recording system according to an embodiment of the invention; - Figure 2 is a schematic view of several elements of a recording system according to an embodiment of the invention; - Figure 3 is a schematic view showing, in accordance with one embodiment of the invention, a recording system in the started state which communicates with the sender with a radio connection point connected to the Internet, the sender having prepared a package into which a product is introduced and into which the registration system is intended to be introduced; - Figure 4 is a schematic view of a package, in the closed state, which contains the product and a recording system, the recording system measuring the temperature but no longer communicating with the outside; - Figure 5 is a schematic view of the package located in a warehouse; - Figure 6 is a schematic view of a vehicle carrying the package; - Figure 7 is a schematic view of the package in the open state at customs, the system detecting the light and activating its radio communication means but not finding a radio connection point to connect to; - Figure 8 is a schematic view of the package in the open state by the recipient of the package, the system detecting the light and connecting to the radio connection point of the recipient to communicate with the server via the Internet.

DETAILED DESCRIPTION

The concept of the invention is described more fully below with reference to the accompanying drawings, in which embodiments of the concept of the invention are shown. Similar numbers refer to similar elements in all of the drawings. However, this concept of the invention can be implemented in many different forms and should not be interpreted as being limited to the embodiments set out here. Instead, these embodiments are offered so that this description is complete, and communicates the scope of the concept of the invention to those skilled in the art. The scope of the invention is therefore defined by the appended claims.

A reference throughout the description to "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrase "in one embodiment" at various locations throughout the specification does not necessarily refer to the same embodiment. Additionally, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

FIGS. 1 and 2 show a system 1 for recording a physical parameter of a product. The product can be an object, element or substance that can be manufactured, natural, inert or living. For example, the product can include organs, blood, medical samples, drugs, vaccines, plants, ice cream, minced meat, etc. ...

The physical parameter of a product is understood to mean a physical parameter to which the product is subjected. Said recording system makes it possible, as detailed below, to follow the evolution over time of said physical parameter of a product with which said system is associated, in a reliable and easy manner for the users of said system. Of course, the system can also record one or more other physical parameters.

For simplicity, the data recording system 1 is hereinafter called the recorder. The recorder is intended to be associated with a product for which it is desired to follow said physical parameter which will be measured over time by the recorder. The recorder and the product are therefore housed in the same container so that the product is transported with the recorder. Of course, the product can also have a specific packaging, but the product and its specific packaging are housed with the recorder in the same container so that the recorder follows the movement of the product in the same environment.

The container is in the general form of a box, package, case or carton in which the recorder and the product are enclosed. The container is opaque to light when closed. Light opaque means that, in the closed state, the brightness sensor does not detect a brightness or measures a brightness below a predefined threshold value in the recorder. Alternatively, the container can be a cold room and / or a vehicle.

For simplicity said container is hereinafter called a package because of the example described according to which the product is shipped with the recorder with which it is associated from a shipping location to a destination. The recorder thus makes it possible to monitor the state of the product during its shipment.

According to a particular aspect, it is considered that the physical parameter value is substantially homogeneous in the environment close to said product defined by the interior of the package in which the product and the recorder are located.

As detailed below, the values of the parameter recorded over time, for example during the transport of the product, can be processed to determine information relating to the state of the product and allow a recipient of the product to decide to whether or not to accept said product or to a sender to release or not release said product.

In particular, in the field of pharmaceutical products such as vaccines, it is important to be able to know the temperature history which the vaccines have undergone in order to be able to determine whether the temperatures or temperature variation undergone are acceptable or not with regard to rules. or predefined criteria.

In the example illustrated in the figures, the physical parameter recorded is the temperature. As a variant, said physical parameter can be another physical parameter such as the acceleration to detect a shock, the humidity, the pressure, the inclination to detect a reversal. Other applications related to the detection of a physical parameter are of course conceivable.

The description given below for the temperature also applies to the case where the physical parameter measured is a physical parameter other than the temperature. The recorder is in the form of a housing 100. The housing has a generally flat shape in the sense that its dimensions of width and length are greater than its dimension of thickness (or height).

The housing has a face, called the front face, which includes a control button 18 making it possible to start the recorder 1. According to a particular aspect presented below, the stop is conditioned by an order from the server 4.

The housing also preferably comprises on said front face, information indicators 16, 17 making it possible to indicate information relating to the state of the product associated with said recorder after processing the recorded data as detailed below.

In particular, the indicator 16 makes it possible to indicate that the state of the product is in conformity while the indicator 17 makes it possible to trigger an alert to indicate a drift of the physical parameter measured with respect to a predefined criterion (for example a threshold overshoot temperature). The sender and / or recipient can then analyze the data recorded to conclude on the acceptability or not of the product. More precisely, these indicators make it possible to indicate whether the conditions under which the product was transported comply with regard to criteria (s) or predefined rule (s). Indeed, the physical parameter recorded over time is representative, at least partially, of these transport conditions, and in particular of the environment and of any physical constraints suffered by the product which is located in the same package and therefore close of the recorder. We consider that the physical parameter measured by the recorder corresponds to the physical parameter to which the product is subjected.

The housing also preferably includes, on said front face, indicators 15 indicating the operating state of the recorder. In the example illustrated in FIG. 1, said operating status indicators comprise an indicator indicating the started state of the recorder, an indicator indicating the connected state of the recorder at a radio connection point, and a LED indicating a state of data communication between the recorder and a server.

Said recorder 1 comprises means 8 for measuring the value of said physical parameter, as a function of time. In the example presented below, said physical parameter which is measured is the temperature. To this end, the measuring means 8 comprise for example a temperature sensor. The temperature sensor measures the temperature as a function of time as close as possible to the product to be monitored because the recorder and the product are contained in the same package.

The values of the temperature measured by the sensor are recorded as a function of time in a memory 13 of the recorder (Figure 2). The recorder also includes a brightness sensor 9 for detecting or measuring a brightness value. The light sensor 9 can include a photosensitive cell. Alternatively, provision may be made to use a photovoltaic cell. The recorder comprises radio communication means 12 which are configured to communicate with a server 4 via a communication network. Said communication network comprises at least one radio connection point 10 connected to the Internet and accessible from the place of destination. Said server 4 is also connected to the Internet to allow said recorder 1 to communicate with said server 4 in the connected state of the recorder at the radio connection point.

According to a particular aspect, the communication network which allows the recorder to communicate with the server 4 also includes a radio connection point 3 connected to the Internet and accessible from the place of dispatch.

According to one embodiment, the radio communication means 12 comprise a WIFI communication module. According to a particular aspect, the WIFI communication module is located on the same electronic card as the microcontroller.

Thus, when the recorder is at the sender's or the recipient's respectively, the communication network with which the recorder communicates comprises a radio connection point, preferably by WIFI protocol, connected to the Internet and the server 4 connected to the Internet.

Thus, according to one embodiment, it can be provided that the radio communication means 12 of the recorder 1 are configured to connect according to the WIFI protocol with a WIFI connection point configured at the sender and a WIFI connection point configured at the recipient who respectively allow access to the Internet network and therefore to the server 4. The use of the WIFI protocol allows the radio communication means of the recorder to connect to a WIFI connection point defined at the client recipient of the product to which is associated said recorder. In particular, the recipient generally has an Internet access box from which he can create a WIFI network serving as a WIFI connection point with connection parameters known to the recorder. If necessary, it is also possible to connect to said Internet access box a device, such as a router or WIFI access point, to define said WIFI connection point.

As a variant, provision may be made for the connection means 12 to communicate according to another protocol, for example the mobile telephone protocol, such as GSM, GPRS, 3G, 4G or Satellite with a corresponding radio connection point making it possible to communicate via the Internet with the server 4.

Said server 4 can be formed of several servers connected to the Internet. The recorder also includes an autonomous power supply 14, of the battery or battery type, possibly rechargeable. The recorder comprises a control unit 11 configured to store in memory 13 the measured value of said physical parameter as a function of time. The control unit 11 makes it possible to control said radio communication means 12 as a function of the brightness 5 measured or detected. The control unit forms the central intelligence of the recorder and makes it possible to control the various electronic components of the recorder and in particular to control the radio communication means and the operations of writing and / or reading in memory of the data. acquired by the sensors and the data communicated during the radio communication steps. The control unit comprises for example a microcontroller (or microprocessor) and a clock integrated or not in the microcontroller.

To allow the radio communication means 12 of the recorder to search for and connect, at the sender's, to a radio connection point connected to the Internet, connection parameters are defined in a memory of the recorder. Said connection parameters include the network name (SSID) to which the recorder can connect when it is with the sender, preferably with a password.

Similarly, as detailed below, when the package is opened at the addressee, the recorder is configured to connect to a radio connection point connected to the Internet. We can provide that the identifiers and passwords to connect to the radio connection point of the recipient are the same as those to connect to the radio connection point of the sender. As a variant, said identifiers and passwords can be different.

Thus, the recorder makes it possible to manage the operation of the communication means 12 so as not to make the radio communication means 12 operate continuously. The recorder thus makes it possible to operate the radio communication means 12 mainly after startup and before the package is closed, and when it is likely that the package has arrived and has been opened at the addressee. Such management of the radio communication means 12 makes it possible to limit the energy consumption of the recorder.

To manage the operation of the communication means, the control unit is configured to control said radio communication means 12 as a function of the detected or measured brightness.

With the exception of the initial start-up of the recorder or of a user action on the recorder such as pressing the button 18 following a connection failure, the control unit is thus configured to trigger the activation of the radio communication means, at least as a function of the brightness measured by the cell. According to one embodiment, it can be provided that the activation of the radio communication means 12 is also conditioned on a minimum value or variation of value of the temperature measured by the temperature sensor. Activation can correspond to an awakening of the communication means when these were on standby or to a supply of said communication means when their power was cut off. The control unit 11 is configured not to search for a radio connection point or communication network to which to connect (and therefore not to transmit data) in the absence of brightness detection or as long as the measured brightness is less than a predefined threshold value (in the recorder), that is, as long as the measured or detected brightness has not crossed a predefined threshold value.

In other words, the radio communication means 12 are configured not to receive and not to transmit data as long as a communication authorization or command corresponding to a sufficient brightness measured or detected by the sensor 9 is not provided by the 'Control unit.

As long as the detected brightness is insufficient, no radio communication activity occurs. The radio communication means do not send data by radio wave. In particular, the means of communication do not go into listening, reception or transmission mode and do not seek to connect.

As illustrated in Figure 3, the user starts the recorder 1 by pressing the start button. The recorder activates its radio communication means, searches for and connects to connection point 3 of the sender connected to the Internet. According to a particular aspect, this "initial" activation of said means of communication takes place following the start of the recorder, without it being conditioned to brightness. As explained below, after the means of communication have been stopped, the next reactivation of these is conditioned on the measured or detected brightness.

It can be expected that the recorder will record the temperature as soon as the recorder has been started or after a given time. The control unit communicates with the server 4 connected to the Internet to signal itself, for example using the transmission of a predefined data frame, making it possible to indicate to the server 4 that the recorder has started .

After being signaled, the recorder stops communicating with the server 4. The control unit 11 then stops the radio communication means 12. Said stopping of the radio communication means 12 can be achieved by putting the radio communication means 12 into standby, that is to say by supplying power minimally but without the possibility of radio communication, or even by cutting off the supply of radio communication means 12.

This stopping of the radio communication means 12 makes it possible to limit the energy consumption of the recorder and therefore to save the energy reserve of the recorder. In fact, stopping the radio communication means 12 prevents said radio communication means 12 from looping for a network to which to connect while, the recorder being contained in the closed package, the recorder does not need to communicate with the outside.

After reporting and after stopping the means of communication, the recorder waits to detect its packaging in the container with the product.

As illustrated in Figure 4, once the recorder and the product have been introduced into the package, the sender closes the package. The brightness detected or measured by the brightness sensor 9 then drops below a predefined threshold value. We can in particular consider that, inside the closed package, the brightness is substantially zero.

Thus, the light sensor 9 no longer detects the light environment 5 outside the package and the control unit 11 thus identifies the fact that the recorder and therefore the product with which it is intended to be associated is in a phase d shipment, i.e. ready to be shipped or being shipped.

Subsequently the package can be stored in a warehouse as shown in Figure 5, for example awaiting shipment. Then the package can be shipped, for example by truck as shown in Figure 6, or by any other means of transport, such as vehicle or boat. Whether in the stored state or during transport, as long as the package remains closed, the absence or low light measured or detected by sensor 9 of the recorder means that the control unit leaves the means stopped radio communication 12 thus preserving the autonomy of said autonomous supply 14.

However, it should be noted that although the radio communication means 12 are stopped, the temperature measured by said measuring means continues to be recorded and stored in memory 13 of the recorder.

The measuring means 8 of said physical parameter regularly measure, that is to say at a given frequency, said temperature, but their consumption is very low. Likewise, the sensor 9 for measuring or detecting brightness operates regularly in order to measure or detect the brightness in order to allow the control unit to wake up or replenish the radio communication means in the event of measurement or detection of brightness. sufficient.

As illustrated in FIG. 7, when the package is opened in a place which does not correspond to its destination, for example at customs 7, the sensor 9 measures or detects a sufficient brightness which means that the package is opened and possibly that the recorder is out of the package. The control unit 11 then activates the radio communication means 12 which seek to connect to a predefined network or to a network of a predefined list. In particular, the radio communication means 12 seek to connect to a network whose identifier has been defined in the recorder, for example in memory 13. In the example illustrated in FIG. 7, the place of opening, here customs, does not include a network with an identifier known to the recorder. Indeed, the package is not supposed to be opened outside the sender's and the recipient's so that the recorder is not supposed to communicate with the server 4. The recorder is not supposed to be connect to a connection point connected to the Internet, outside the home of the sender and the recipient. Therefore, and possibly after one or more search or connection attempts, the control unit stops the radio communication means 12.

According to one embodiment, the recorder continues to measure and record the temperature even in the open state of the package.

In the event of a connection failure, said means of communication are stopped so as to no longer search for a radio connection point until an additional condition is fulfilled.

It can be provided that the awakening or recharging of the radio communication means 12 to relaunch the connection search is conditional on the crossing of a brightness threshold value (predefined in the recorder). Such a crossing corresponds to the combination of a detection or measurement of a luminosity lower than a predefined threshold value, called closing value, then, for example later, of a detection or measurement of a luminosity greater than a value predefined threshold, called opening value. Said closing value may be less than or equal to the opening value.

In other words, the control unit 11 is configured to activate the radio communication means 12 during the detected or measured ascending crossing of a predefined brightness threshold value.

Indeed, such a combination of events is representative of the fact that the parcel has been opened in an area other than at the destination client, for example at customs, then closed, and finally reopened at a place which may be at the destination client .

As explained below, a condition for waking up or replenishing the communication means can be the pressing of a given button 18 of the recorder 1 to reactivate the network search. This condition applies in particular in the event that the product has indeed arrived at the addressee but has been opened in an area beyond the reach of the radio connection point connected to the Internet.

When the package is then closed, the control unit detects the absence or insufficient light using the sensor 9.

According to a preferred embodiment, the detection of the absence or insufficient brightness is recorded by the recorder but is not used to control the stopping of the radio communication means. According to a particular aspect, the stopping of the radio control means results from a failure of connection of the recorder to the access point or to the server 4, or of an order from the server 4 received by the recorder 1.

As illustrated in FIG. 8, when the package arrives at the addressee and the package is opened, the corresponding brightness measured or detected by the device allows the control unit to wake up or replenish the means of communication which are looking for a network to which connect and find a network of which he knows the identifier. The radio communication means then connect to said identified network preferably using a predefined password in the recorder. The radio communication means can then communicate with the server 4 via the Internet and the radio connection point 10 present at the recipient.

In the event that the package is fully open at the addressee but the means of communication fail to connect to a predefined radio connection point 10, for example because the recorder is out of range of said radio connection point 10 , the recorder behaves as described above in connection with FIG. 7 and cuts, possibly after one or more other tests, said means of communication.

Advantageously, the radio communication means 12 can be woken up or replenished by the user by pressing a given button, for example the start button 18 of the recorder.

Thus, the user can for example bring the recorder closer to the radio connection point and / or make sure that it is functioning properly, then press the start button 18 of the recorder to wake up or replenish the radio communication means. The communication means 12 search for, find and connect to the predefined radio connection point 10 present at the addressee. In the state connected to said radio connection point 10, the recorder 1 transmits to the server 4 the recorded temperature values as a function of time. Provision may also be made for the recorder to record and transmit to the server 4 additional data such as the value of brightness measured or detected over time, searches for connection point or any other event that the recorder has been able to detect or measure. .

Said server 4 which receives the data transmits an acknowledgment to the recorder 1.

Said server 4 processes the data received and generates information relating to the result of this processing, such as information regarding compliance or non-compliance with the cold chain, with respect to predefined rules. The control unit 11 of the recorder is configured to receive said processing result information. The processing result information returned by the server to the recorder allows the control unit to activate the status indicator 16 or 17 according to said processing result information. The recorder can thus activate the indicator 16 which indicates an "OK" status if the treatment result information is positive (for example when the cold chain has been respected) or can activate the indicator 17 to alert the recipient who may then ask the sender for information if necessary. The sender can consult the details of the cloud server data and take responsibility for the delivery or acceptance of the product taking this data into account.

Provision may be made for the temperature measurement to be carried out continuously as long as the server 4 has not transmitted information, for example said processing result information, to the recorder, interpreted by the recorder as a stop command for measurement, in order to avoid any false or malicious measurement stop.

It can be expected that the brightness is considered sufficient when the brightness value is greater than 50 lux. Provision can be made for this predefined threshold value in the recorder to be modifiable, for example in the control unit, which then compares a value supplied by the brightness sensor with this threshold value to identify whether the brightness of the environment in which it is located. the recorder and therefore the product is sufficient to consider that the package is open.

According to one embodiment, the control means or unit described above are formed by an electronic and computer processing and calculation unit. Said unit can be produced in the form of an electronic circuit provided with a microcontroller or processor. When, in the description, it is specified that given means are configured to perform a given operation, this means that the electronic and computer system which forms said means, includes computer instructions making it possible to carry out said operation.

Thus, the steps and functions presented above can be implemented in the form of a computer program or via hardware components (eg networks of programmable doors).

Computer programs, or computer instructions, can be contained in program storage devices, such as computer readable digital data storage media, or executable programs. Programs or instructions can also be executed from program storage devices. The invention is not limited to the embodiments illustrated in the drawings. Consequently, it should be understood that, when the features mentioned in the appended claims are followed by reference signs, these signs are included only for the purpose of improving the intelligibility of the claims and are in no way limitative of the scope of the claims.

In addition, the term "comprising" does not exclude other elements or steps. In addition, features or steps which have been described with reference to one of the embodiments set out above can also be used in combination with other features or steps of other embodiments set out above.

Claims (12)

1. System for recording (1) a physical parameter, such as the temperature, of a product, characterized in that said system comprises: - means for measuring (8) the value of said physical parameter, such as '' a temperature sensor, as a function of time; - a memory (13) for recording the values of said physical parameter as a function of time; - radio communication means (12) configured to connect to a radio connection point (3, 10) connected to the Internet and, in the state connected to said radio connection point, to transmit data to a server (4 ), - a brightness sensor (9), such as a photosensitive cell, - a control unit (11), such as a processor or microcontroller, configured to: - record in the memory (13) the measured values of said physical parameter as a function of time; - controlling the activation of said radio communication means (12) as a function of the brightness (5) measured or detected by the brightness sensor (9). 2. Recording system (1) according to claim 1. characterized in that the control unit (11) is configured to activate the radio communication means (12) when the detected or measured brightness crosses a predefined threshold value upward. 3. recording system (1) according to one of claims 1 or 2, characterized in that the recording system (1) is configured to stop said communication means (12) after communicating with the server (4 ), preferably after having received corresponding information from said server. 4. Recording system (1) according to one of the preceding claims, characterized in that the control unit (11) is configured for, preferably at least in the absence of action of a person on the system, leave said radio communication means (12) stopped when the detected or measured brightness is less than a predefined threshold value. 5. Recording system (1) according to one of the preceding claims, characterized in that the control unit (11) is configured for, in the connected state of the recording system (1) at said connection point radio (10) following said ascending predefined brightness threshold value, transmit to the server (4) the values of said physical parameter recorded as a function of time. 6. recording system (1) according to claim 5, characterized in that, said server (4) being configured to process the data received and generate information relating to the result of this processing, such as compliance information or of non-compliance with the cold chain, the control unit (11) is configured to receive, by said radio connection point (10), said processing result information. 7. Recording system (1) according to one of the preceding claims, characterized in that the radio communication means (12) comprise a WIFI communication module. 8. Recording system (1) according to one of the preceding claims, characterized in that the control unit (11) is configured for, in the event of failure of connection with said radio connection point or with the server , stop said radio communication means so as to no longer search for a radio connection point until an additional condition is fulfilled. 9. Recording system (1) according to claim 8, characterized in that the additional condition making it possible to relaunch the search for a radio connection point, comprises the fact that the detected or measured brightness crosses upwards a predefined threshold value. 10. Recording system (1) according to one of claims 8 or 9, characterized in that the additional condition allowing to restart the search for a communication network comprises pressing a button (18) given from the registration (1) to reactivate the network search. 11. Assembly comprising: - a recording system (1) according to one of the preceding claims, - a radio connection point (3, 10) connected to the Internet and to which said radio communication means (12) of the system (1) are able to connect, and - a server (4) connected to the Internet. 12. Method for monitoring a physical parameter, such as the temperature, of a product, using a recording system (1) according to one of the preceding claims, said recording system (1 ) being placed in a container (2), such as a carton, with said product, said container being opaque to light in the closed state, characterized in that said method comprises the following steps: - when the brightness (5 ) detected or measured ascends a predefined threshold value upwards, control the radio connection means (12) to connect to a radio connection point (10) connected to the Internet, - transmit to a server (4) connected to the Internet, the values of said physical parameter recorded as a function of time in the memory (13); - receive result information relating to the processing of said values by the server (4); - Preferably, activate an information indicator (16, 17) according to the result information received.