TWI787642B - distance sensing method - Google Patents

Abstract

A distance sensing method is implemented by a distance sensing system, and the distance sensing system includes a first electronic device and a second electronic device. The second processing unit of the second electronic device sends a wireless signal through the second short-distance wireless communication unit. When the first processing unit of the first electronic device receives the wireless signal from the second electronic device through the first short-distance wireless communication unit, the processing unit generates a message indicating the first electronic device and the first electronic device according to the signal strength of the wireless signal. A distance estimate of the estimated distance between the second electronic devices. When the first processing unit of the first electronic device judges that the estimated distance is less than a preset distance, the first processing unit outputs a prompt via the first output unit, so that the second electronic device approaches the first electronic device , the prompt is sent to the user of the first electronic device.

Description

distance sensing method

The present invention relates to a sensing method, in particular to a distance sensing method implemented by a distance sensing system.

During an outbreak, people should maintain an appropriate social distance whether indoors or outdoors to reduce the mutual transmission of diseases between people.

However, at present, people can only rely on people to pay attention to the distance between themselves and the people around them. Therefore, it is possible to get too close to others due to momentary negligence, and face a greater risk of infection.

Therefore, the purpose of the present invention is to provide a distance sensing system that can solve the above problems.

Therefore, the distance sensing system provided by the present invention includes a first electronic device and a second electronic device.

The first electronic device includes a first short-distance wireless communication unit, a first output unit, and a first processing unit electrically connected to the first short-distance wireless communication unit and the first output unit.

The second electronic device includes a second short-distance wireless communication unit, and a A second processing unit electrically connected to the second short-distance wireless communication unit, the second processing unit sends a wireless signal through the second short-distance wireless communication unit; when the first processing unit of the first electronic device passes through The first short-distance wireless communication unit receives the wireless signal from the second electronic device, and the first processing unit generates a message indicating the communication between the first electronic device and the second electronic device according to the signal strength of the wireless signal. An estimated distance value of the estimated distance; when the first processing unit of the first electronic device determines that the estimated distance value is less than a preset distance, the first processing unit outputs a prompt via the first output unit.

In some implementations, the first electronic device further includes a first storage unit electrically connected to the first processing unit, the first storage unit stores a lookup table, and the lookup table includes a plurality of distance parameter values and a plurality of a range of device numbers respectively corresponding to the equidistance parameter values; before the first processing unit of the first electronic device determines whether the estimated distance value is less than the preset distance, the first processing unit according to the received The number of wireless signals generates a current device number, and the value of the preset distance is set to be the same as one of the equidistance parameter values according to the current device number and the comparison table, wherein the distance parameter value corresponds to the device Quantity covers the current device quantity.

In some implementation aspects, the equidistance parameter value of the comparison table is positively correlated with the number range of the devices.

In some implementation aspects, the distance sensing system includes a plurality of second electronic devices, when the first processing unit of the first electronic device passes through the first short-distance wireless The wireless communication unit receives the wireless signals from more than one of the second electronic devices, and the first processing unit generates the distance estimation value only according to the wireless signal with the strongest signal strength.

In some implementation aspects, the distance sensing system includes M second electronic devices, M is an integer greater than 1, when the first processing unit of the first electronic device receives When receiving the wireless signals from more than one of the second electronic devices, the first processing unit only generates the distance estimation value based on N wireless signals with the strongest signal strength among the wireless signals, where N is greater than 1 and not greater than An integer of M; when the first processing unit of the first electronic device determines that the estimated equidistance values are all smaller than the preset distance, the first processing unit outputs the prompt via the first output unit.

In some implementation aspects, the first electronic device further includes a first storage unit electrically connected to the first processing unit, and a first positioning unit electrically connected to the first processing unit, the first positioning unit For generating a positioning result, when the positioning unit can calculate the current position of the first electronic device, the positioning result indicates the current position of the first electronic device, when the positioning unit cannot calculate the current position of the first electronic device When the current position of the location is determined, the positioning result indicates that positioning cannot be performed, and the first storage unit stores a comparison table, the comparison table includes two distance parameter values, and two indoor and outdoor parameters corresponding to the equidistance parameter values, the The indoor and outdoor parameters respectively indicate indoor and outdoor; the first processing unit of the first electronic device is judging whether the estimated distance value is small Before the preset distance, the first processing unit generates an indoor-outdoor analysis result indicating that the first electronic device is located indoors or outdoors according to the positioning result, wherein, when the positioning result indicates that the current position of the first electronic device is position, the indoor and outdoor analysis result generated by the first processing unit indicates that the first electronic device is located outdoors, and when the positioning result indicates that it cannot be located, the indoor and outdoor analysis result generated by the first processing unit indicates It is determined that the first electronic device is located indoors; the first processing unit of the first electronic device sets the value of the preset distance to be the same as one of the equidistance parameter values according to the indoor and outdoor analysis results and the comparison table, Wherein, the indoor and outdoor parameters corresponding to the distance parameter value are the same as the indoor and outdoor analysis results.

In some implementation aspects, the distance parameter value corresponding to the indoor and outdoor parameter indicating indoor is greater than the distance parameter value corresponding to the indoor and outdoor parameter indicating outdoor.

In some implementation aspects, the distance sensing system further includes a remote server electrically connected to the first electronic device, and the first electronic device further includes a first positioning unit electrically connected to the first processing unit The first positioning unit is used to generate a positioning result indicating the current position of the first electronic device. The first electronic device receives a plurality of area data from the remote server, and determines the location indicated by the positioning result. When the current location covers the area indicated by one of the area data, a prompt is output through the first output unit.

In some implementations, the first electronic device and the second electronic device All are drones, the first electronic device further includes a first drive unit electrically connected to the first processing unit; when the first processing unit of the first electronic device determines that the estimated distance is less than the preset distance, the first processing unit controls the drive unit to accelerate or decelerate.

Another object of the present invention is to provide a distance sensing method implemented by a distance sensing system, the distance sensing system includes a first electronic device and a second electronic device, the first electronic device includes a first A short-distance wireless communication unit, a first output unit, and a first processing unit electrically connected to the first short-distance wireless communication unit and the first output unit, the second electronic device includes a second short-distance wireless A communication unit, and a second processing unit electrically connected to the second short-distance wireless communication unit, the second processing unit sends a wireless signal through the second short-distance wireless communication unit.

The distance sensing method includes: when the first processing unit of the first electronic device receives the wireless signal from the second electronic device through the first short-distance wireless communication unit, the first processing unit according to the wireless signal The signal strength yields a distance estimate indicating the estimated distance between the first electronic device and the second electronic device.

When the first processing unit of the first electronic device determines that the estimated distance is less than a preset distance, the first processing unit outputs a prompt via the first output unit.

The effect of the present invention is that the distance sensing system of the present invention receives the wireless signal through the first electronic device, and generates the corresponding estimated distance value according to the wireless signal, and when it is judged that the estimated distance value is less than the When the distance is preset, the prompt is output to remind the user of the first electronic device that the distance between him and other people is too close; furthermore, the first electronic device according to the current number of devices, the indoor and outdoor analysis results and the comparison table The value of the preset distance is set to be the same as one of the equidistance parameter values, so that the first electronic device can change the value of the preset distance according to the current environment.

10: The first electronic device

11: The first short-distance wireless communication unit

12: The first output unit

13: The first processing unit

14: The first storage unit

15: The first positioning unit

16: The first drive unit

20: Second electronic device

21: The second short-distance wireless communication unit

22: Second processing unit

200: remote server

300: communication network

S21~S26: Steps

S31~S34: steps

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a schematic diagram of a hardware connection of a first embodiment of the distance sensing system of the present invention; Fig. 2 is This embodiment executes a flowchart of a first distance sensing program; FIG. 3 is a flowchart of a second distance sensing program executed by this embodiment; and FIG. 4 is a flowchart of the distance sensing system of the present invention A schematic diagram of hardware connection of the second embodiment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

Referring to Fig. 1, a first embodiment of the distance sensing system of the present invention is suitable for A remote server 200 is electrically connected through a communication network 300 and includes a first electronic device 10 and a plurality of second electronic devices 20 .

The first implementation mode in the first embodiment is suitable for epidemic prevention warnings, so the remote server 200 stores a plurality of area data, and each area data is where the infected person or the high-risk person has stopped place.

In this embodiment, the first electronic device 10 is a portable electronic device such as a smart phone, a tablet computer or a smart watch, and includes a first short-distance wireless communication unit 11, a first output Unit 12, a first processing unit 13 electrically connected to the first short-distance wireless communication unit 11 and the first output unit 12, and a first storage unit 14 and a first positioning unit electrically connected to the first processing unit 13 Unit 15.

The first short-range wireless communication unit 11 is used for transmitting and receiving signals using short-range wireless communication technologies such as Bluetooth or Near-field communication (NFC).

The first output unit 12 is, for example, a buzzer or a vibrator.

The first storage unit 14 is, for example, a non-volatile memory (Non-Volatile Memory, NVM), and stores a lookup table, the lookup table includes a plurality of distance parameter values, a plurality of values corresponding to the equidistance parameter values The range of the number of devices, and the two indoor and outdoor parameters corresponding to the value of the equidistant parameter. These indoor and outdoor parameters indicate indoor and outdoor respectively, and each distance parameter value corresponds to the distance between the indoor and outdoor parameters. one of them.

It is particularly noted that the equidistance parameter value of the comparison table is inversely correlated with the range of the number of devices, and the distance parameter value corresponding to the indoor and outdoor parameter indicating indoor is greater than that indicated by the indoor and outdoor parameter indicating outdoor. Corresponding to the distance parameter value.

It should be noted that, in other implementation forms, the equidistance parameter value of the comparison table may also be positively correlated with the range of the number of devices, and it indicates that the distance parameter value corresponding to the indoor and outdoor parameters is also It can be smaller than the value of the distance parameter corresponding to the indoor and outdoor parameter indicating outdoor, and it is not limited to this embodiment.

The comparison table is, for example:

The first positioning unit 15 is, for example, a GPS chip, and is used to generate a positioning result. When the positioning unit can calculate the current position of the first electronic device 10, the positioning result indicates the current position of the first electronic device 10. position, when the positioning unit cannot calculate the current position of the first electronic device 10, the positioning result indicates that positioning cannot be performed.

The first processing unit 13 is, for example, a central processing unit (Central Processing Unit, CPU) inside the first electronic device 10, and can transmit and receive wireless signals through the first short-distance wireless communication unit 11, and control the first output unit 12 Send a reminder as a ringing or vibrating.

In the first embodiment, each second electronic device 20 is a portable electronic device such as a smart phone, a tablet computer or a smart watch, and includes a second short-distance wireless communication unit 21 and an electronic A second processing unit 22 connected to the second short-distance wireless communication unit 21 .

The second short-range wireless communication unit 21 is used for sending and receiving signals using short-range wireless communication technologies such as Bluetooth or Near-field communication (NFC).

The second processing unit 22 is, for example, a central processing unit (Central Processing Unit, CPU) inside the second electronic device 20 , and can transmit and receive wireless signals through the second short-range wireless communication unit 21 .

Referring to FIG. 1 and FIG. 2 , the steps of a first distance sensing procedure performed by the first embodiment are described below.

In step S21 , the second processing unit 22 sends a wireless signal through the second short-distance wireless communication unit 21 . Then execute step S22.

In step S22, when the first processing unit 13 of the first electronic device 10 receives the wireless signal from more than one of the second electronic devices 20 via the first short-range wireless communication unit 11, the first The processing unit 13 generates a current device number according to the number of received wireless signals, and generates an indoor/outdoor analysis indicating whether the first electronic device 10 is located indoors or outdoors according to the positioning result generated by the first positioning unit 15. result.

Furthermore, when the positioning result indicates the current location of the first electronic device 10, the indoor and outdoor analysis result generated by the first processing unit 13 indicates that the first electronic device 10 is located outdoors. When the result indicates that it cannot be located (because the first electronic device 10 is indoors, the first positioning unit 15 cannot be located), the indoor and outdoor analysis result generated by the first processing unit 13 indicates that the first electronic device 10 are located indoors.

More specifically, when a user enters an indoor public place with the first electronic device 10, the first electronic device 10 will receive signals from the surroundings within the receivable range of the signal (for example, the signal receivable range of Bluetooth is about 10 meters) of the wireless signals sent by the second electronic devices 20, and calculate the number of received wireless signals to calculate the number of second electronic devices 20 within the signal receiving range, and also It is to estimate the number of people around the user. In addition to calculating the number of wireless signals, the first electronic device 10 also generates the positioning result through the first positioning unit 15 to determine whether the first electronic device 10 is currently located indoors or outdoors. Then execute step S23.

In step S23, after the first processing unit 13 of the first electronic device 10 generates the current device quantity and the indoor and outdoor analysis results, the first processing unit 13 of the first electronic device 10 according to the current device The quantity, the indoor and outdoor analysis results and the comparison table set the value of the preset distance to be the same as one of the equidistance parameter values, wherein the indoor and outdoor parameters corresponding to the distance parameter value and the indoor and outdoor analysis results are the same, and the number of devices corresponding to the distance parameter value covers the current number of devices.

That is to say, the first electronic device 10 will set the preset distance according to the current environment of the first electronic device 10 according to the current number of devices and the indoor and outdoor analysis results, and according to the above table. The distance parameter value is to adjust the distance between the user and other people according to the current environment of the user. Then execute step S24.

In step S24, the first electronic device 10 generates the distance estimate indicating the distance between the second electronic device that sends out the wireless signal and the first electronic device 10 based only on the wireless signal with the strongest signal strength. measured value.

More specifically, in this embodiment, the first electronic device 10 generates the estimated distance value according to a received signal strength indicator (RSSI) of the received wireless signal. Then execute step S25.

In step S25, after the first electronic device 10 generates the estimated distance value corresponding to the wireless signal with the strongest signal strength, the first electronic device 10 determines whether the estimated distance value is smaller than the preset distance, and if so , then execute step S26, if not, return to step S24.

In step S26 , when the first processing unit 13 of the first electronic device 10 determines that the estimated distance is smaller than the preset distance, the first processing unit 13 outputs the prompt via the first output unit 12 .

It should be further explained that, since the first electronic device 10 receives The wireless signal with the strongest signal strength should be sent by the second electronic device 20 with the closest distance. Therefore, the first electronic device 10 only needs to determine whether the estimated distance corresponding to the wireless signal with the strongest signal strength is If it is less than the preset distance, it can be determined whether any second electronic device 20 is within the preset distance, that is, it can be judged whether the distance between the user and other people is less than the preset distance. Moreover, when the first processing unit 13 of the first electronic device 10 judges that the estimated distance is less than the preset distance, the first output unit 12 sends out a bell or vibration to remind the user that he is currently with other people. too close.

In addition, while the first electronic device 10 is executing the above steps S21-S26, the first processing unit 13 of the first electronic device 10 will also receive the area data from the remote server 200, and determine When it is found that the current position indicated by the positioning result covers the area indicated by one of the area data, a reminder to remind the user to leave the area as soon as possible is output through the first output unit 12 .

In a second implementation of the first embodiment, it is used for store marketing. In this implementation, the second electronic devices 20 are respectively placed in multiple stores (not shown), and when the The first processing unit 13 of the first electronic device 10 judges that the estimated distance value corresponding to one of the second electronic devices 20 is smaller than the preset distance, and the first processing unit 13 outputs the hint. The prompt indicates that the second electronic device 20 is a device of a mascot or a mysterious character installed in the store, so the first electronic device 10 can obtain points, and then when the points accumulate to a certain Level (for example, 10 points) to the store in exchange for gifts. The mascot is usually placed in a more eye-catching place in the store for customers to approach to get points, while the mysterious character is usually in a more hidden and less noticeable place, allowing customers or players to shop in the shopping process You can have a treasure hunting experience.

Referring to Fig. 1 and Fig. 3, a third embodiment of the first embodiment is a game for army siege. In this embodiment, the distance sensing system includes a first electronic device 10 and M second electronic devices 20 , where M is an integer greater than 1. The first electronic device 10 and the M second electronic devices 20 are the same as those of the above-mentioned embodiments, and thus will not be repeated here.

In step S31 , the first processing unit 13 of the first electronic device 10 receives the wireless signals from more than one of the M second electronic devices 20 via the first short-range wireless communication unit 11 . Then execute step S32.

In step S32, when the first processing unit 13 receives the wireless signals, the first processing unit 13 generates the estimated distance only based on the N wireless signals with the strongest signal strength among the wireless signals, where N is greater than 1 and an integer not greater than M. For example, if the first processing unit 13 receives 10 wireless signals (M=10), that is, there are 10 second electronic devices 20 within the signal receiving range of the first processing unit 13, the first processing unit The unit 13 generates 3 distance estimation values only according to the 3 strongest (N=3) wireless signals among which the signal strengths are the strongest. Then step S33 is executed.

In step S33, when the first electronic device 10 generates N distance estimates value, the first electronic device 10 judges whether the N estimated distance values are all smaller than the preset distance, if yes, proceed to step S34, and if not, return to step S32.

In step S34 , the first processing unit 13 outputs the prompt via the first output unit 12 .

More specifically, when the user plays an army siege game with other players wearing the second electronic device 20 through the first electronic device 10, the first electronic device 10 receives a signal within the acceptable range of the signal. The wireless signals sent by the second electronic devices 20, and N distance estimation values corresponding to N of the received wireless signals are calculated. Moreover, when the first electronic device 10 determines that the N estimated distances corresponding to the N wireless signals with the strongest signal strengths are all smaller than the preset distance, that is, the user is currently being worn by N second The electronic device 20 is surrounded by players, therefore, the first processing unit 13 outputs the prompt that the user is out of the game via the first output unit 12 .

Referring to FIG. 4 , a second embodiment of the distance sensing system of the present invention is described below, including a first electronic device 10 and a plurality of second electronic devices 20 . In this embodiment, the first electronic device 10 and the second electronic devices 20 are, for example, drones, unmanned self-driving cars, or bionic fish, but are not limited to the above.

The first electronic device 10 includes a first short-distance wireless communication unit 11, a first output unit 12, a first processing unit 13 electrically connected to the first short-distance wireless communication unit 11 and the first output unit 12, and electrically connected to the first processing unit A first storage unit 14 , a first positioning unit 15 and a first driving unit 16 of the unit 13 . The second electronic device 20 includes a second short-distance wireless communication unit 21 and a second processing unit 22 electrically connected to the second short-distance wireless communication unit 21 .

The first short-distance wireless communication unit 11, the first output unit 12, the first processing unit 13, the first storage unit 14, the first positioning unit 15, the second short-distance wireless communication unit 21 and the The second processing unit 22 is all related to the first short-distance wireless communication unit 11, the first output unit 12, the first processing unit 13, the first storage unit 14, and the first positioning unit in the above-mentioned first embodiment. The unit 15 , the second short-distance wireless communication unit 21 and the second processing unit 22 are the same, and will not be repeated here.

The first driving unit 16 is, for example, a motor, which is used as a power source to move the drone.

The difference from the first embodiment is that when the first processing unit 13 of the first electronic device 10 determines that the estimated distance is less than the preset distance, the first processing unit 13 controls the drive unit to accelerate or run at reduced speed.

That is to say, when the first processing unit 13 of the first electronic device 10 judges that one of the second electronic devices 20 is too close to it, the first processing unit 13 of the first electronic device 10 controls The first drive unit 16 is accelerated or decelerated, and the first drive unit 16 is controlled to turn to avoid collision.

In summary, the distance sensing system of the present invention uses the first electronic device 10. Receive the wireless signal, and generate the corresponding estimated distance value according to the wireless signal, and when it is judged that the estimated distance value is less than the preset distance, output the prompt, so that when the user is too far away from other people, Give a reminder when it is near. Furthermore, the first electronic device 10 sets the value of the preset distance to be the same as one of the equidistance parameter values according to the current device quantity, the indoor and outdoor analysis results and the comparison table, so as to The first processing unit 13 of the first electronic device 10 can change the value of the preset distance according to the current environment of the first electronic device 10 . Therefore, can really reach the purpose of the present invention.

But the above-mentioned ones are only embodiments of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of the present invention.

10: The first electronic device

11: The first short-distance wireless communication unit

12: The first output unit

13: The first processing unit

14: The first storage unit

15: The first positioning unit

20: Second electronic device

21: The second short-distance wireless communication unit

22: Second processing unit

200: communication network

300: remote server

Claims (2)

A distance sensing method, implemented by a distance sensing system, the distance sensing system includes a first electronic device and a second electronic device, the first electronic device includes a first short-distance wireless communication unit, a first An output unit, and a first processing unit electrically connected to the first short-distance wireless communication unit and the first output unit, the second electronic device includes a second short-distance wireless communication unit, and a first processing unit electrically connected to the first output unit A second processing unit of the second short-distance wireless communication unit, the second processing unit sends a wireless signal through the second short-distance wireless communication unit, the distance sensing method includes: when the first electronic device of the first electronic device A processing unit receives the wireless signal from the second electronic device through the first short-distance wireless communication unit, and the first processing unit generates a signal indicating the first electronic device and the second electronic device according to the signal strength of the wireless signal. a distance estimate value of the estimated distance between devices; and when the first processing unit of the first electronic device determines that the distance estimate value is less than a preset distance, the first processing unit outputs the outputting a prompt; wherein, the first electronic device further includes a first storage unit electrically connected to the first processing unit, the first storage unit stores a comparison table, and the comparison table includes a plurality of distance parameter values and a plurality of The ranges of the number of devices respectively corresponding to the equidistance parameter values; the distance sensing method further includes: before the first processing unit of the first electronic device determines whether the estimated distance value is less than the preset distance, the first processing unit according to The number of received wireless signals generates a current device number, and the value of the preset distance is set to be the same as one of the equal distance parameter values according to the current device number and the comparison table, wherein the distance parameter value The corresponding device quantity includes the current device quantity. A distance sensing method, implemented by a distance sensing system, the distance sensing system includes a first electronic device and a second electronic device, the first electronic device includes a first short-distance wireless communication unit, a first An output unit, and a first processing unit electrically connected to the first short-distance wireless communication unit and the first output unit, the second electronic device includes a second short-distance wireless communication unit, and a first processing unit electrically connected to the first output unit A second processing unit of the second short-distance wireless communication unit, the second processing unit sends a wireless signal through the second short-distance wireless communication unit, the distance sensing method includes: when the first electronic device of the first electronic device A processing unit receives the wireless signal from the second electronic device through the first short-distance wireless communication unit, and the first processing unit generates a signal indicating the first electronic device and the second electronic device according to the signal strength of the wireless signal. a distance estimate value of the estimated distance between devices; and when the first processing unit of the first electronic device determines that the distance estimate value is less than a preset distance, the first processing unit outputs the Outputting a prompt; wherein, the first electronic device further includes a first storage unit electrically connected to the first processing unit, and a first positioning unit electrically connected to the first processing unit, and the first positioning unit is used for to generate a certain As a result, the first storage unit stores a comparison table, the comparison table includes two distance parameter values, and two indoor and outdoor parameters respectively corresponding to the equidistance parameter values, and the indoor and outdoor parameters respectively indicate indoor and outdoor; The distance sensing method further includes: when the first positioning unit can calculate the current position of the first electronic device, the positioning result indicates the current position of the first electronic device; When the current location of the first electronic device is located, the positioning result indicates that it cannot be positioned; before the first processing unit of the first electronic device determines whether the estimated distance is less than the preset distance, the first processing unit according to the The positioning result generates an indoor-outdoor analysis result indicating that the first electronic device is located indoors or outdoors, wherein when the positioning result indicates the current position of the first electronic device, the indoor-outdoor analysis result generated by the first processing unit The analysis result indicates that the first electronic device is located outdoors, and when the positioning result indicates that it cannot be located, the indoor and outdoor analysis result generated by the first processing unit indicates that the first electronic device is located indoors; the first electronic device The first processing unit sets the value of the preset distance to be the same as one of the equidistance parameter values according to the indoor and outdoor analysis results and the comparison table, wherein the indoor and outdoor parameters corresponding to the distance parameter value are the same as the The indoor and outdoor analysis results are the same.

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