WO2022027534A1 - Lamp synchronization method and terminal - Google Patents

Abstract

The present invention relates to the technical field of lamps, and in particular, to a lamp synchronization method and terminal. The synchronization method comprises the following steps: a lamp receiving time data of other lamps within a pre-set communication range; respectively comparing the received time data with time data of said lamp, using the fastest time data or the slowest time data as reference time data for all lamps within the pre-set communication range and synchronizing to all the lamps within the pre-set communication range, and configuring all lamps having time values equal to the reference time data as main devices. The selection of a main device is determined by time, and a device having the fastest (or slowest) time is a main device. By only using time data as the decision basis for a main device, all lamps having the fastest (or slowest) time after synchronization are main devices, therefore, the present synchronization system allows two or more main devices to work at the same time, thereby effectively improving transmission efficiency and system stability.

Description

Synchronization method and terminal of a kind of lamp technical field

The invention relates to the technical field of lamps, and in particular, to a synchronization method and a terminal for lamps.

Background technique

As a kind of lamps, warning lights are widely used in road construction, municipal construction and other construction sites. As a warning safety product, the lights emitted by the warning lights remind vehicles and pedestrians to avoid the construction area and prevent safety accidents. The synchronous warning light means that multiple warning lights can be turned on and off at the same time, and the warning effect is better and more popular.

At present, there are many applications of synchronous warning lights, such as synchronous flashing lights, synchronous arrow signs, etc. Most of the existing synchronization schemes realize synchronization by synchronizing time, and realize the synchronization in combination with wireless communication, such as 2.4G communication, broadcast signal radio clock. However, the broadcast signal radio clock cannot be used in places with weak broadcast signals such as tunnels, indoors, and bridges, so the following mainly focuses on the 2.4G synchronization scheme. To synchronize time, there must be a time for reference. For example, the world time is based on Greenwich Mean Time. The synchronization of warning lights is also similar. The time of one warning light is used as the reference time. Usually, this warning light is the host, and the time of other warning lights is synchronized to the same time of the host. The selection of the existing host is generally determined by the machine number. The machine number is the machine number in the boot sequence or the machine number is built in the product, and the largest or the smallest machine number is used as the host.

However, selecting the host by machine number has the following drawbacks:

1. The workload is heavy during deployment and control, and it needs to be placed in the order of machine numbers;

2. It takes a long time to synchronize, and the synchronization efficiency is low;

3. When the host or multiple machines fail, the entire system will be out of sync for a period of time, resulting in system instability;

4. A system can only have one host.

technical problem

The technical problem to be solved by the present invention is to provide a synchronization method and terminal for lamps, so as to improve the efficiency of deployment and control, and to enhance the rapidity and stability of the entire synchronization system.

technical solutions

In order to solve the above-mentioned technical problems, a technical scheme adopted in the present invention is:

A method for synchronizing lamps, comprising the following steps:

S1. A lamp receives time data of other lamps within a preset communication range;

S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host.

Another technical scheme adopted by the present invention is:

A lighting synchronization terminal, comprising a memory, a processor, and a computer program stored on the memory and running on the processor, the processor implements the following steps when executing the computer program:

S1. A lamp receives time data of other lamps within a preset communication range;

S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host.

beneficial effect

The beneficial effects of the present invention are:

The invention provides a synchronization method and terminal for lamps, wherein data transmission is no longer point-to-point, but point-to-multipoint transmission in the form of multicast, which increases the efficiency of signal transmission and also increases the stability of the entire system. In addition, the selection of the host is no longer based on the machine number, but is determined by the time itself. Whoever has the fastest time is the host (or who has the slowest time is the host). By using the time data as the judgment basis of the host, there will be no phenomenon of using the machine number as the host to make the whole system out of synchronization in case of failure of the host. The machine number determines the host and its host is unique, and the time data is used to determine the host. After synchronization, all machines with the fastest time and the same time value can be the host. Therefore, within the preset communication range, the synchronization system allows two More than one host can work at the same time, and determining the host based on time can also improve the efficiency of synchronization and the stability of the system.

Description of drawings

FIG. 1 is a flow chart of the steps of a synchronization method for a lamp according to the present invention;

FIG. 2 is a flow chart of the specific steps of the synchronization method of the lamp according to the present invention;

3 is a schematic structural diagram of a synchronization terminal of a lamp of the present invention;

4 is a timing diagram of a transmission mode of the lamp of the present invention;

FIG. 5 is a timing diagram of a receiving mode of the lamp of the present invention;

FIG. 6 is a flow chart of the overall steps of the synchronization method of the lamp according to the present invention;

FIG. 7 is a schematic diagram of signal communication between lamps according to the present invention;

Label description:

1. Memory; 2. Processor.

Embodiments of the present invention

In order to describe the technical content, achieved objects and effects of the present invention in detail, the following descriptions are given with reference to the embodiments and the accompanying drawings.

Referring to FIG. 1 , a method for synchronizing lamps provided by the present invention includes the following steps:

S1. A lamp receives time data of other lamps within a preset communication range;

S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host. The fastest (or slowest) machine with the same time value can be the master (ie, multi-master).

As can be seen from the above description, the beneficial effect of the present invention is that: in the method for synchronizing lamps provided by the present invention, data transmission is no longer point-to-point, but point-to-multipoint transmission is adopted in the form of multicast, which increases signal transmission. The efficiency also increases the overall system stability. In addition, the selection of the host is no longer based on the machine number, but is determined by the time itself. Whoever has the fastest time is the host (or who has the slowest time is the host). By using the time data as the judgment basis of the host, there will be no phenomenon of using the machine number as the host to make the whole system out of synchronization in case of failure of the host. The machine number determines the host and his host is unique, and the time data is used to determine the host. After synchronization, the fastest (or slowest) time is the host. Determining the host by time can also improve the efficiency of synchronization and the stability of the system.

Further, before step S1, it also includes:

S0. Acquire the time data carried by the clock source set on the lamp within a preset time period after the lamp is powered on and configure it as its own time data. After the configuration is completed or the preset time period is reached, go to step S1.

It can be seen from the above description that the lamp after being powered on only receives signals within a certain period of time, that is, the time data carried by the clock source set on the lamp is first obtained and configured as its own time data. At the same time, the external system will also synchronize the time data to the lamps that have been powered on (completed power-on). If the configuration is completed, you can directly go to step S1, or if the preset time is reached and the configuration has not been completed (generally, the time data distributed by the external system has not been received), step S1 is also entered. set in. In the traditional way, the lamps that send data are often sending data and the lamps that receive data are not in the receiving mode, which leads to data loss, and then it generally takes a period of time to complete the synchronization when powering on, but the above step S0 can be used to solve the problem. these questions.

Further, step S2 further includes: judging whether the time data of all lamps are equal, and if so, completing the synchronization operation.

It can be seen from the above description that the synchronization operation is completed only when the time data of all lamps are equal.

Further, step S1 is specifically as follows: a lighting fixture receives time data of other lighting fixtures within a preset communication range and starts timing to obtain a synchronization duration;

Step S2 is specifically: comparing the received time data with its own time data, taking the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronizing to the preset time data. Set all lamps within the communication range, and set all lamps whose time value is equal to the reference time data as the host. If the synchronization duration reaches the preset synchronization duration threshold, there are lamps with unequal time data among all lamps, and a synchronization exception message will be sent.

As can be seen from the above description, if the synchronization has not been completed within the preset synchronization duration threshold range, a synchronization exception message is sent, and the synchronization operation is completed by powering on again later.

Further, all lamps in step S1 send time data to their preset communication range with a first cycle and receive time data within their preset communication range with a second cycle, and the first cycle and the second cycle are determined by The continuous and alternating operation mode and the sleep mode are formed, and the duration of the corresponding operation mode in the first cycle is shorter than the duration of the corresponding operation mode in the second cycle.

As can be seen from the above description, because the signal of the lamp is both sent and received, and in order to save power, it is impossible to be in the receiving or sending mode all the time, so it is set to sleep mode for some time, that is, it is not running.

Referring to FIG. 3, the present invention also provides a synchronization terminal for lamps, including a memory, a processor, and a computer program stored on the memory and running on the processor, and the processor executes the computer program When implementing the following steps:

S1. A lamp receives time data of other lamps within a preset communication range;

S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host.

As can be seen from the above description, the beneficial effects of the present invention are: in the synchronous terminal for lamps provided by the present invention, data transmission is no longer point-to-point, but point-to-multipoint transmission is adopted in the form of multicast, which increases signal transmission. The efficiency also increases the overall system stability. In addition, the selection of the host is no longer based on the machine number, but is determined by the time itself. Whoever has the fastest time is the host (or who has the slowest time is the host). By using the time data as the judgment basis of the host, there will be no phenomenon of using the machine number as the host to make the whole system out of synchronization in case of failure of the host. The machine number determines the host and his host is unique, and the time data is used to determine the host. After synchronization, the fastest time is the host. Determining the host with time can also improve the efficiency of synchronization and the stability of the system.

Further, the processor also implements the following steps when executing the computer program:

S0. Acquire the time data carried by the clock source set on the lamp within a preset time period after the lamp is powered on and configure it as its own time data. After the configuration is completed or the preset time period is reached, go to step S1.

It can be seen from the above description that the lamp after being powered on only receives signals within a certain period of time, that is, the time data carried by the clock source set on the lamp is first obtained and configured as its own time data. At the same time, the external system will also synchronize the time data to the lamps that have been powered on (completed power-on). If the configuration is completed, step S1 may be directly entered, or the configuration may not be completed after the preset time period is reached (generally, the time data distributed by the external system has not been received), and step S1 may also be entered. In the traditional way, the lamps that send data are often sending data and the lamps that receive data are not in the receiving mode, which leads to data loss, and then it generally takes a period of time to complete the synchronization when powering on, but the above step S0 can be used to solve the problem. these questions.

Further, the processor further implements the following steps when executing the computer program:

Determine whether the time data of all lamps are equal, and if so, complete the synchronization operation.

It can be seen from the above description that the synchronization operation is completed only when the time data of all lamps are equal.

Further, the processor further implements the following steps when executing the computer program:

A lamp receives the time data of other lamps within the preset communication range and starts timing to obtain the synchronization duration;

Compare the received time data with its own time data, take the fastest time data (or the slowest time data) as the reference time data for all lamps within the preset communication range and synchronize to the preset communication range For all the fixtures in the system, set all fixtures whose time value is equal to the reference time data as the host. If the synchronization duration reaches the preset synchronization duration threshold, there are fixtures with unequal time data in all fixtures, and a synchronization exception message will be sent.

As can be seen from the above description, if the synchronization has not been completed within the preset synchronization duration threshold range, a synchronization exception message is sent, and the synchronization operation is completed by powering on again later.

Further, the processor further implements the following steps when executing the computer program:

All lamps in step S1 send time data to their preset communication range with a first cycle and receive time data within their preset communication range with a second cycle, the first cycle and the second cycle are both continuous and mutual. Composed of alternate operation modes and sleep modes, the duration of the corresponding operation mode in the first cycle is shorter than the duration of the corresponding operation mode in the second cycle.

Please refer to Figure 1, Figure 2, Figure 4 to Figure 7, the first embodiment of the present invention is:

The method for synchronizing a lamp of the present invention is mainly applied to a warning system, wherein the lamp is a warning lamp. The lights emitted by the warning lights remind vehicles and pedestrians to avoid the construction area and prevent safety accidents.

The synchronization method of the lamp of the present invention includes the following steps:

S0. Acquire the time data carried by the clock source set on the lamp within a preset time period after the lamp is powered on and configure it as its own time data. After the configuration is completed or the preset time period is reached, go to step S1.

In this example, the lamps that are powered on only receive signals within a certain period of time, that is, the time data carried by the clock source set on the lamps is first obtained and configured as its own time data. At the same time, the external system will also synchronize the time data to the lamps that have been powered on (completed power-on). If the configuration is completed, step S1 may be directly entered, or the configuration may not be completed after the preset time period is reached (generally, the time data distributed by the external system has not been received), and step S1 may also be entered. In the traditional way, the lamps that send data are often sending data and the lamps that receive data are not in the receiving mode, which leads to data loss, and then it generally takes a period of time to complete the synchronization when powering on, but the above step S0 can be used to solve the problem. these questions.

S1. A lamp receives time data of other lamps within a preset communication range, and each lamp also sends its own time data to other lamps within its preset communication range;

In this example, step S1 is specifically as follows: a lighting fixture receives time data of other lighting fixtures within the preset communication range and starts timing, obtains the synchronization duration, and sends its own time data; wherein, all lighting fixtures are preset to it in the first cycle Sending time data within the communication range and receiving time data within its preset communication range with a second cycle;

Because each warning light not only needs to receive data but also send data, and in order to reduce the power consumption of the 2.4G wireless module, it is very important to reasonably arrange the transmission and reception cycles of the wireless module. As shown in Figure 4 and Figure 5, in order to save power, it is impossible to be in the receiving or sending mode all the time, so it is set to sleep mode for some time, that is, the state of not running. Both the first period and the second period consist of continuous and alternate operation modes and sleep modes, and the duration of the corresponding operation mode in the first period is shorter than the duration of the corresponding operation mode in the second period.

It should be noted that: in FIG. 4 , the high level represents the transmission mode, and the low level represents the sleep mode; in FIG. 5 , the high level represents the receive mode, and the low level represents the sleep mode.

S2. Compare the received time data with its own time data, take the fastest time data (or the slowest time data) as the reference time data of all lamps within the preset communication range and synchronize to the preset time data For all lamps within the communication range, set all lamps whose time value is equal to the reference time data as the host;

Determine whether the time data of all lamps are equal, and if so, complete the synchronization operation.

In this embodiment, step S2 is specifically: comparing the received time data with its own time data, and using the fastest time data (or the slowest time data) as the benchmark for all lamps within the preset communication range The time data is synchronized to all fixtures within the preset communication range, and all fixtures whose time value is equal to the reference time data are set as the host. If the synchronization duration reaches the preset synchronization duration threshold, there are fixtures with unequal time data among all fixtures. , a synchronization exception message is issued.

In fact, each luminaire receives the time data of other luminaires within its preset communication range, and achieves local synchronization first, and then continues to spread the synchronization through the following methods, and finally achieves synchronization of all luminaires.

It should be noted that: two or more warning lights on the same channel realize clock data sharing in the form of multicast; here, multicast transmission is used instead of unicast. Multicast transmission: A point-to-multipoint network connection is implemented between the sender and each receiver. If a sender transmits the same data to multiple receivers at the same time, only one copy of the same data packet is required. It improves the efficiency of data transfer and reduces the possibility of congestion in the backbone network. Multicast (English: multicast) refers to the simultaneous delivery of information to a group of destination addresses. It uses a strategy that is most efficient because messages only need to be delivered once on each network link, and messages are replicated only when the link forks. In contrast to multicast, conventional point-to-point delivery is called unicast. When a message is delivered to multiple recipients as unicast, a copy of the data must be sent to each recipient. The resulting redundant copies will result in inefficiencies on the sender side and lack of scalability.

The system synchronization speeds obtained using unicast (point-to-point) and multicast (point-to-multiple) are as follows:

Assuming that there are N warning lights, the unicast is the data of warning light 1, which is transmitted to warning light 2, warning light 2, warning light 3, warning light 3, warning light 4, warning light 4, warning light 5, ..., warning light N- 1 pass warning light N. If the unicast method is used, the synchronization data is transmitted from the host to the last slave (that is, the warning light N), and it takes a lot of time for the signal to be transmitted N-1 times, resulting in a long time to complete the complete synchronization of the system. , the larger the number, the longer the synchronization time. As shown in Figure 7, the multi-host multicast communication mode: the time from host 1 to host N is the same, slave 1, slave 2, slave 3, ..., slave N communicate with each other, and the host and slave communicate with each other . If they are all within the communication area, it is possible to achieve all synchronization with only one communication. Even if they are not all delivered in an area, the number of delivery is far less than that of unicast, so the synchronization efficiency is much faster than that of unicast.

The system stability corresponding to using unicast and multicast is as follows:

Suppose there are N warning lights, using the unicast method, if some warning lights fail, the data transmission will be interrupted for a short time, and the entire synchronization system will be out of synchronization for a period of time. The way of using multicast is that multiple warning lights send data, and multiple warning lights receive data. Even if any warning light is broken, only its individual data is lost, and the synchronization of other warning lights will not be affected.

After step S2, it further includes: S3. After the synchronization operation is completed, start timing, and judge in real time whether the reset time T2 is exceeded. If yes, clear the time, return to step S1, and perform the synchronization operation again. If not, continue to judge whether the reset time T2 is exceeded. The reset step is mainly that the time signal needs to be transmitted by the wireless communication module, and the smaller the transmission signal, the faster the transmission speed, so the general time data is not very large, and it needs to be reset and synchronized once for a period of time. The above reset time T2 is based on the actual use. It is an adjustable parameter set corresponding to the relevant indicators at the time.

Please refer to Fig. 3, the second embodiment of the present invention is:

The present invention also provides a synchronization terminal for lamps, comprising a memory 1, a processor 2, and a computer program stored on the memory 1 and running on the processor 2, and the processor 2 executes the computer The program implements the following steps:

S1. A lamp receives time data of other lamps within a preset communication range;

S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host.

Further, the processor also implements the following steps when executing the computer program:

S0. Acquire the time data carried by the clock source set on the lamp within a preset time period after the lamp is powered on and configure it as its own time data. After the configuration is completed or the preset time period is reached, go to step S1.

Further, the processor further implements the following steps when executing the computer program:

Determine whether the time data of all lamps are equal, and if so, complete the synchronization operation.

Further, the processor further implements the following steps when executing the computer program:

A lamp receives the time data of other lamps within the preset communication range and starts timing to obtain the synchronization duration;

Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range, and synchronize to all lamps within the preset communication range. For lamps, set all lamps whose time value is equal to the reference time data as the host. If the synchronization duration reaches the preset synchronization duration threshold, there are lamps with unequal time data among all lamps, and a synchronization exception message will be sent.

Further, the processor further implements the following steps when executing the computer program:

All lamps in step S1 send time data to their preset communication range with a first cycle and receive time data within their preset communication range with a second cycle, the first cycle and the second cycle are both continuous and mutual. Composed of alternate operation modes and sleep modes, the duration of the corresponding operation mode in the first cycle is shorter than the duration of the corresponding operation mode in the second cycle.

In summary, the present invention provides a method and terminal for synchronizing lamps, in which data transmission is no longer point-to-point, but point-to-multipoint transmission in the form of multicast, which increases the efficiency of signal transmission and also increases The whole system is stable. In addition, the selection of the host is no longer based on the machine number, but is determined by the time itself, whoever has the fastest time is the host or who has the slowest time is the host. By using the time data as the judgment basis of the host, there will be no phenomenon of using the machine number as the host, which will cause the whole system to be out of sync if the host fails. The machine number determines the host and its host is unique, and the time data is used to determine the host. After synchronization, all the fastest time and the same time value are the host. Based on this principle, more than two devices are allowed to exist at the same time within the preset communication range. The mainframes work at the same time, and determining the mainframe by time can also improve the efficiency of synchronization and the stability of the system.

The above descriptions are only examples of the present invention, and are not intended to limit the scope of the present invention. Any equivalent transformations made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in related technical fields, are similarly included in the within the scope of patent protection of the present invention.

Claims (10)

A method for synchronizing lamps, comprising the following steps: S1. A lamp receives time data of other lamps within a preset communication range; S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host. The method for synchronizing lamps according to claim 1, wherein before step S1, the method further comprises: S0. Acquire the time data carried by the clock source set on the lamp within a preset time period after the lamp is powered on and configure it as its own time data. After the configuration is completed or the preset time period is reached, go to step S1. The method for synchronizing lamps according to claim 1, wherein step S2 further comprises: judging whether the time data of all lamps are equal, and if so, completing the synchronization operation. The method for synchronizing lamps according to claim 1, wherein step S1 is specifically: a lamp receives time data of other lamps within a preset communication range and starts timing to obtain the synchronization duration; Step S2 is specifically: comparing the received time data with its own time data, taking the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronizing to the preset time data. Set all lamps within the communication range, and set all lamps whose time value is equal to the reference time data as the host. If the synchronization duration reaches the preset synchronization duration threshold, there are lamps with unequal time data among all lamps, and a synchronization exception message will be sent. A method for synchronizing lamps according to claim 1, wherein all lamps in step S1 send time data to their preset communication range in a first cycle and within their preset communication range in a second cycle Receiving time data, the first cycle and the second cycle are composed of continuous and alternating operation modes and sleep modes, and the duration of the corresponding operation mode in the first cycle is shorter than the duration of the corresponding operation mode in the second cycle . A synchronizing terminal for lamps, characterized by comprising a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor implements the following steps when executing the computer program: S1. A lamp receives time data of other lamps within a preset communication range; S2. Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range and synchronize to the preset communication range All fixtures in it, set all fixtures whose time value is equal to the reference time data as the host. The synchronization terminal for lamps according to claim 6, wherein the processor further implements the following steps when executing the computer program: S0. Acquire the time data carried by the clock source set on the lamp within a preset time period after the lamp is powered on and configure it as its own time data. After the configuration is completed or the preset time period is reached, go to step S1. The synchronization terminal for lamps according to claim 6, wherein the processor further implements the following steps when executing the computer program: Determine whether the time data of all lamps are equal, and if so, complete the synchronization operation. The synchronization terminal for lamps according to claim 6, wherein the processor further implements the following steps when executing the computer program: A lamp receives the time data of other lamps within the preset communication range and starts timing to obtain the synchronization duration; Compare the received time data with its own time data, take the fastest time data or the slowest time data as the reference time data of all lamps within the preset communication range, and synchronize to all lamps within the preset communication range. For lamps, set all lamps whose time value is equal to the reference time data as the host. If the synchronization duration reaches the preset synchronization duration threshold, there are lamps with unequal time data among all lamps, and a synchronization exception message will be sent. The synchronization terminal for lamps according to claim 6, wherein the processor further implements the following steps when executing the computer program: All lamps in step S1 send time data to their preset communication range with a first cycle and receive time data within their preset communication range with a second cycle, the first cycle and the second cycle are both continuous and mutual. Composed of alternate operation modes and sleep modes, the duration of the corresponding operation mode in the first cycle is shorter than the duration of the corresponding operation mode in the second cycle.