A method and device for automatically pairing communication modules between an electric energy meter and a circuit breaker

Abstract

The present invention discloses a method for automatically pairing communication modules of an electric energy meter and a circuit breaker, comprising: designating any electric energy meter as an automatic pairing control subject; the automatic pairing control subject scans each circuit breaker, and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired; after the automatic pairing control subject sends a start internal load command to the circuit breaker to be paired, the communication connection with the circuit breaker to be paired is disconnected; the circuit breaker to be paired starts the internal load according to the received start internal load command; when the electric energy meter detects that its main circuit current or power increases, the electric energy meter is the electric energy meter to be paired; the electric energy meter to be paired and the circuit breaker whose broadcast signal is in the pairing state are automatically paired and connected, thereby improving the probability of successful first pairing of the circuit breaker.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method for automatically pairing a communication module of an electric energy meter with a circuit breaker, and also to a device for automatically pairing a communication module of an electric energy meter with a circuit breaker. Background Art

[0002] At present, the mainstream automatic pairing solutions for electric energy meters and their external circuit breakers include the following solutions:

[0003] Solution 1: There is a QR code or serial number containing its MAC address on the circuit breaker. When connecting, use a handheld device to scan the code or read the serial number manually to obtain the MAC address of the circuit breaker and pass it to the electric energy meter corresponding to the circuit breaker. The electric energy meter pairs with the circuit breaker via Bluetooth based on the obtained MAC address. The above Bluetooth pairing method has significant defects: that is, at the installation site of the circuit breaker, there is generally no power supply, the circuit breaker is not powered on, and the electric energy meter corresponding to the circuit breaker may not be powered on. Bluetooth pairing can only be performed after both the circuit breaker and the electric energy meter are powered on, which will inevitably affect the installation efficiency of the circuit breaker and increase the installation cost; in addition, there are often multiple circuit breakers installed densely, which may cause the handheld device to scan the adjacent circuit breaker when scanning the code, resulting in connection errors.

[0004] Solution 2: Provides a Bluetooth automatic pairing method for an energy meter and a circuit breaker, as follows:

[0005] Step A1, after power-on, the electric energy meters are sorted according to the Bluetooth broadcast information, and then the electric energy meter at the front of the sorting enters the pairing attempt state;

[0006] Step A2, the electric energy meter connects to a circuit breaker with the strongest Bluetooth signal according to the strength of the circuit breaker Bluetooth broadcast signal. After the circuit breaker is connected, the broadcast is stopped and the connection state is entered;

[0007] Step A3, the electric energy meter sends a command to enable the circuit breaker to start the internal load;

[0008] Step A4, the circuit breaker starts the internal load after receiving the command;

[0009] Step A5, the electric energy meter monitors the change of the main circuit current;

[0010] Step A5-1, if the main circuit current does not suddenly increase, it means that the electric energy meter and the circuit breaker are not in the same circuit, and the Bluetooth connection relationship is incorrect. The electric energy meter disconnects the Bluetooth connection of the circuit breaker (after the circuit breaker is disconnected, it re-enters the broadcast state), connects to another circuit breaker according to the Bluetooth signal strength, and repeats steps 3A to 5A;

[0011] In step A5-2, if the main circuit current suddenly increases, it means that the circuit breaker and the electric energy meter are in the same circuit, and the Bluetooth connection relationship is correct. The electric energy meter saves the circuit breaker information and exits the attempt pairing state. The next electric energy meter in the front order enters the attempt pairing state, and steps 2A to 5A are repeated until all the electric energy meters are paired with their corresponding circuit breakers via Bluetooth.

[0012] The above-mentioned Bluetooth automatic pairing method also has significant defects: each electric energy meter needs to try each circuit breaker one by one until the correct circuit breaker is paired, and the pairing efficiency is low, resulting in a long pairing time when there are many electric energy meters in the same broadcast area; in addition, each circuit breaker needs to start its internal load when being tried to connect by different electric energy meters, resulting in repeated startup of the internal load. Since the power of the internal load is relatively large, the repeated startup of the internal load will cause it to heat up severely, which may cause damage to the internal load and adjacent devices, causing damage to the circuit breaker. Summary of the invention

[0013] In order to overcome the defects of the prior art, the present application provides a method for automatically pairing a communication module of an electric energy meter with a circuit breaker, comprising:

[0014] Any electric energy meter is designated as an automatic pairing control subject; the automatic pairing control subject scans each circuit breaker and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired;

[0015] After the automatic pairing control body sends a command to start the internal load to the circuit breaker to be paired, the communication connection with the circuit breaker to be paired is disconnected;

[0016] The circuit breaker to be paired starts the internal load according to the received command to start the internal load;

[0017] When the electric energy meter detects that its main circuit current or power increases, the electric energy meter is the electric energy meter to be paired;

[0018] The broadcast signal of the electric energy meter to be paired with the circuit breaker is the circuit breaker in the pairing state, and automatic pairing connection is performed.

[0019] Preferably, designating any electric energy meter as an automatic pairing control subject includes:

[0020] Through the management background, any one of the multiple electricity meters can be designated as the automatic pairing control subject.

[0021] Preferably, the automatic pairing control body scans each circuit breaker and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired, including:

[0022] Automatically pairing the first wireless communication module of the control body and scanning each circuit breaker;

[0023] The circuit breaker that is first paired and connected with the first wireless communication module is determined as the circuit breaker to be paired.

[0024] Preferably, after the step of determining the circuit breaker that is first paired and connected as the circuit breaker to be paired, the method further includes:

[0025] The first wireless communication module of the automatic pairing control body is connected to the second wireless communication module of the circuit breaker to be paired through the MAC address of the circuit breaker.

[0026] Preferably, the first wireless communication module and the second wireless communication module are both Bluetooth communication modules.

[0027] Preferably, when the electric energy meter detects that its main circuit current or power increases, the electric energy meter is an electric energy meter to be paired, including:

[0028] Multiple electric energy meters monitor their respective main circuit current or power in real time;

[0029] The electric energy meter with increased main circuit current or power is determined as the electric energy meter to be paired.

[0030] Preferably, the broadcast signal of the electric energy meter to be paired with the circuit breaker is a circuit breaker in a pairing state, and automatic pairing connection is performed, including:

[0031] The electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module;

[0032] The electric energy meter to be paired obtains a broadcast signal, and the circuit breaker in the pairing state is in the pairing state;

[0033] The electric energy meter to be paired is automatically paired and connected with the circuit breaker in the pairing state.

[0034] The present application also provides a device for automatically pairing a communication module between an electric energy meter and a circuit breaker, comprising:

[0035] The circuit breaker determination unit to be paired specifies any electric energy meter as an automatic pairing control subject; the automatic pairing control subject scans each circuit breaker and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired;

[0036] An internal load command sending unit, wherein the automatic pairing control body sends a start internal load command to the circuit breaker to be paired, and then disconnects the communication connection with the circuit breaker to be paired;

[0037] An internal load starting unit, wherein the circuit breaker to be paired starts the internal load according to the received command to start the internal load;

[0038] The unit for determining the electric energy meter to be paired is used for determining that when the electric energy meter detects that the current or power of its main circuit increases, the electric energy meter is the electric energy meter to be paired;

[0039] The automatic pairing unit automatically pairs and connects the electric energy meter to be paired with the circuit breaker whose broadcast signal is in the pairing state.

[0040] Preferably, the circuit breaker determination unit to be paired includes:

[0041] Scan subunit, automatically pair with the communication module of the control body, and scan each circuit breaker;

[0042] The circuit breaker to be paired determining subunit determines the circuit breaker that is first paired and connected with the communication module as the circuit breaker to be paired.

[0043] Preferably, the automatic pairing unit comprises:

[0044] The scanning subunit, the electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module;

[0045] The circuit breaker status acquisition subunit acquires the circuit breaker whose pairing status is the pairing status in the broadcast signal obtained by the paired electric energy meter;

[0046] Automatic pairing subunit, the electric energy meter to be paired is automatically paired and connected with the circuit breaker in the pairing state.

[0047] The present application provides a method for automatically pairing a communication module between an electric energy meter and a circuit breaker. The circuit breaker only needs to start the internal load once to complete the pairing connection with the communication module of the electric energy meter corresponding to it, which significantly improves the efficiency of pairing the communication modules of the electric energy meter and the circuit breaker. In addition, the internal load generates little heat and will not be damaged due to overheating during the pairing process. Furthermore, the electric energy meter determines whether the circuit breaker to be paired is connected to its main circuit by monitoring its main circuit current or power mutation signal, which improves the efficiency and accuracy of monitoring, avoids the internal load of the circuit breaker from working for a long time and being damaged by overheating, and effectively improves the probability of successful first pairing of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a flow chart of a method for automatically pairing a communication module between an electric energy meter and a circuit breaker provided in the present application;

[0049] Figure 2 It is a schematic diagram of the connection structure of the management backend, electric energy meter, circuit breaker and user load provided by this application;

[0050] Figure 3 It is a structural schematic diagram of the circuit breaker provided by the present application;

[0051] Figure 4It is a structural schematic diagram of the electric energy meter provided in this application;

[0052] Figure 5 It is a schematic diagram of an automatic pairing device for communication modules of an electric energy meter and a circuit breaker provided in the present application. DETAILED DESCRIPTION

[0053] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application, so the present application is not limited by the specific implementation disclosed below.

[0054] Figure 1 This is a flow chart of a method for automatically pairing a communication module between an electric energy meter and a circuit breaker provided by the present application. Figure 1 The method provided in this application is described in detail.

[0055] Step S101, designate any electric energy meter as an automatic pairing control subject; the automatic pairing control subject scans each circuit breaker, and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired.

[0056] like Figure 2 As shown, multiple electric energy meters are respectively connected to the management background for communication, and multiple electric energy meters are respectively electrically connected to multiple circuit breakers. Each electric energy meter includes a processing unit and a first wireless communication module, and each circuit breaker includes a control unit, a second wireless communication module and an internal load. The electric energy meter is connected in series with the user load through the circuit breaker, and the internal load of the circuit breaker draws power from the power line of the circuit.

[0057] Through the management background, any one of the multiple electric energy meters is designated as the automatic pairing control subject. The electric energy meter always serves as the automatic pairing control subject until all the electric energy meters complete the communication module pairing connection with their corresponding circuit breakers; or, after the management background designates an electric energy meter as the automatic pairing control subject, until the electric energy meter completes the communication module pairing connection with its corresponding circuit breaker, the management background re-designates the automatic pairing control subject from the electric energy meter that has not completed the communication module pairing connection, or, the management background re-designates the automatic pairing control subject after completing the communication module pairing connection of each circuit breaker. The first wireless communication module of the automatic pairing control subject scans each circuit breaker; the circuit breaker that is first paired and connected with the first wireless communication module is determined as the circuit breaker to be paired. The first wireless communication module of the automatic pairing control subject is connected to the second wireless communication module of the circuit breaker to be paired through the MAC address of the circuit breaker. The first wireless communication module and the second wireless communication module are both Bluetooth communication modules.

[0058] The automatic pairing control body scans the circuit breakers and uses the first circuit breaker scanned as the circuit breaker to be paired with the communication module first, or the circuit breaker with the strongest signal scanned as the circuit breaker to be paired with the communication module first. After determining the circuit breaker to be paired with the communication module first, the automatic pairing control body sends the circuit breaker information of the circuit breaker to be paired to the management background.

[0059] Step S102: After the automatic pairing control body sends a command to start the internal load to the circuit breaker to be paired, the communication connection with the circuit breaker to be paired is disconnected.

[0060] After receiving the command to start the internal load, the circuit breaker to be paired returns confirmation information to the automatic pairing control body. After receiving the confirmation information returned by the circuit breaker to be paired, the automatic pairing control body disconnects the communication connection with the circuit breaker to be paired.

[0061] After the circuit breaker to be paired detects that its communication connection with the automatic pairing control body is disconnected, the circuit breaker to be paired automatically changes its communication module pairing status information to the pairing state and sends a broadcast signal to the outside, wherein the broadcast signal includes the MAC address of the circuit breaker to be paired and its pairing status information.

[0062] Step S103: the circuit breaker to be paired starts the internal load according to the received command to start the internal load.

[0063] After the circuit breaker to be paired starts the internal load and waits for time t0, t0>0s, the circuit breaker to be paired automatically unloads the internal load.

[0064] Step S104: When the electric energy meter detects that its own main circuit current or power increases, the electric energy meter is an electric energy meter to be paired.

[0065] Multiple electric energy meters monitor their respective main circuit currents or powers in real time; when an electric energy meter detects that its own main circuit current or power suddenly increases, the electric energy meter whose main circuit current or power increases is determined as the electric energy meter to be paired.

[0066] Step S105, the electric energy meter to be paired and the circuit breaker whose broadcast signal is in the pairing state are automatically paired and connected.

[0067] The electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module, and the electric energy meter to be paired obtains the circuit breaker in the pairing state in the broadcast signal, and the electric energy meter to be paired is automatically paired and connected with the circuit breaker in the pairing state. The serial number of the paired electric energy meter, the MAC address of the circuit breaker to be paired, and the pairing result information are the pairing information.

[0068] Repeat steps S101-S105 to pair the plurality of electric energy meters with their corresponding circuit breakers through communication module pairing.

[0069] After the paired electric energy meter completes the pairing connection of the communication module, it sends a start internal load command to the circuit breaker with which it has completed the pairing connection of the communication module. After receiving the start internal load command, the circuit breaker starts the internal load. If the paired electric energy meter detects that its main circuit current or power suddenly increases again, the MAC address of the paired circuit breaker is saved and the pairing information including the pairing result information is uploaded to the management background.

[0070] If the electric energy meter to be paired does not detect a sudden increase in its own main circuit current or power again, it means that the pairing has failed. The electric energy meter to be paired will report the pairing information including the pairing result information to the management background. After the pairing fails, the electric energy meter to be paired sends a pairing failure command to the circuit breaker to be paired, and disconnects from the circuit breaker after receiving the response from the circuit breaker.

[0071] If the management background still does not receive the pairing information uploaded by the electric energy meter after the waiting time t2, t2>0s, it means that the pairing fails, and the management background starts to pair the communication module of the next circuit breaker through the automatic pairing control body.

[0072] Next, we will combine Figure 2-4 , further illustrating a specific implementation of the method for automatically pairing the communication module of the electric energy meter and the circuit breaker of the present invention. The method for automatically pairing the communication module of the electric energy meter and the circuit breaker of the present invention is not limited to the description of the following embodiments.

[0073] The method for automatically pairing the communication modules of an electric energy meter and a circuit breaker of the present invention comprises: a plurality of electric energy meters are connected to a management background for communication; the plurality of electric energy meters are respectively physically connected to a plurality of circuit breaker power lines; each electric energy meter comprises a processing unit and a first wireless communication module; each circuit breaker comprises a control unit, a second wireless communication module and an internal load; the electric energy meter is connected in series with the user load through the circuit breaker; the internal load of the circuit breaker draws power from the power line of the circuit where it is located; the method for automatically pairing the communication modules of the electric energy meter and the circuit breaker comprises the following steps:

[0074] Step 1, the management background designates an electric energy meter as the automatic pairing control subject;

[0075] Step 2, the automatic pairing control body scans the circuit breakers, determines the circuit breaker that first performs communication module pairing and connection, and the circuit breaker is the circuit breaker to be paired. The automatic pairing control body connects to the second wireless communication module of the circuit breaker to be paired through the first wireless communication module according to the MAC address of the circuit breaker to be paired;

[0076] Step 3, the automatic pairing control body sends a start internal load command to the circuit breaker to be paired, and the automatic pairing control body disconnects the communication connection with the circuit breaker to be paired;

[0077] Step 4: the circuit breaker to be paired starts its internal load and sends a broadcast signal through the second wireless communication module. The broadcast signal should include the MAC address of the circuit breaker to be paired and the status information of pairing in progress; the status information in the broadcast signal of the remaining circuit breakers is unpaired.

[0078] Step 5, including step 5a;

[0079] Step 5a, multiple electric energy meters monitor their respective main circuit currents or powers in real time, and the electric energy meter that monitors a sudden increase in its own main circuit current or power is the electric energy meter to be paired. The electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module, and completes the pairing connection with the circuit breaker whose status information in the broadcast signal is that it is being paired;

[0080] Step 6, repeat steps 1-5 to pair the multiple electric energy meters with their corresponding circuit breakers to complete the communication module pairing connection.

[0081] According to the automatic pairing method of the communication modules of the electric energy meter and the circuit breaker of the present invention, the circuit breaker can complete the pairing connection with the communication module of the electric energy meter corresponding to it only needs to start the internal load once, which significantly improves the efficiency of the pairing of the communication modules of the electric energy meter and the circuit breaker, and the internal load generates little heat and will not be damaged due to overheating during the pairing process; further, the electric energy meter determines whether the circuit breaker to be paired is connected to its main circuit by monitoring its main circuit current or power mutation signal, which improves the efficiency and accuracy of monitoring, avoids the internal load of the circuit breaker from working for a long time and being damaged by overheating, and effectively improves the probability of successful first pairing of the circuit breaker.

[0082] Preferably, the first wireless communication module and the second wireless communication module are both Bluetooth communication modules, and the MAC address of the circuit breaker is a Bluetooth MAC address. Preferably, the management background can be a host computer, which can issue action instructions such as circuit breaker opening, closing, closing permission, and data reading instructions such as query status to the electric energy meter through the communication network. The electric energy meter is provided with a communication module connected to the host computer, and the communication module can be wired or wireless, and can be 4G / 5G or power line carrier, etc.

[0083] The following is another implementation of the method for automatically pairing the communication module of the electric energy meter and the circuit breaker of the present invention.

[0084] like Figure 2As shown, multiple electric energy meters and multiple circuit breakers of the present invention have been installed and connected. Multiple electric energy meters are respectively connected to the management background through communication modules, and the communication modules are power line carrier modules; multiple electric energy meters are respectively connected in series with user loads through multiple circuit breakers, and the internal loads of each circuit breaker draw power from the main circuit connected to the circuit breaker. The circuit breaker must be in an open state before pairing. Each electric energy meter also includes a processing unit and a first wireless communication module. Each circuit breaker includes a control unit and a second wireless communication module and an internal load. The first wireless communication module and the second wireless communication module are both Bluetooth communication modules. The first wireless communication module of each electric energy meter and the second wireless communication module of the corresponding circuit breaker have not been paired and connected. At this time, the circuit breaker is usually in an open state. The second wireless communication module of each circuit breaker sends a broadcast signal, and the broadcast signal includes the MAC address of the circuit breaker and the pairing status information. Further, the pairing status information of the communication modules of all circuit breakers is in an unpaired state. The automatic pairing method of the communication modules of the electric energy meter and the circuit breaker includes the following steps:

[0085] Step 1: The management background designates an electric energy meter as the automatic pairing control subject.

[0086] Preferably, in step 1, the background obtains a list of electric energy meters that have not yet completed the pairing and connection of the communication module, and the management background can randomly designate an electric energy meter from the electric energy meter list as the automatic pairing control subject; or sort all the electric energy meters according to the serial number of the electric energy meter or the built-in configuration parameters of the electric energy meter, and then designate the electric energy meter with the highest order as the automatic pairing control subject.

[0087] Preferably, in step 1, after the management background designates an electric energy meter as the automatic pairing control subject, the electric energy meter always serves as the automatic pairing control subject until all the electric energy meters complete the communication module pairing connection with their corresponding circuit breakers; or, after the management background designates an electric energy meter as the automatic pairing control subject, until the electric energy meter completes the communication module pairing connection with its corresponding circuit breaker, the management background re-designates the automatic pairing control subject from the electric energy meter that has not completed the communication module pairing connection, or, the management background re-designates the automatic pairing control subject after completing the communication module pairing connection of each circuit breaker. The above schemes all belong to the protection scope of the present invention.

[0088] In the case where a certain electric energy meter always serves as the automatic pairing control subject, preferably, the first wireless communication module of each electric energy meter can simultaneously maintain communication connection with the second wireless communication modules of at least two circuit breakers at the same time, even if the electric energy meter serving as the automatic pairing control subject and its corresponding circuit breaker have completed the automatic pairing connection of the communication module, in step 2, the first wireless communication module of the automatic pairing control subject can still connect with other circuit breakers, determine a new circuit breaker to be paired, and send a command to start the internal load of the circuit breaker to be paired in step 3. Of course, the first wireless communication module of the automatic pairing control subject can also be a second wireless communication module that can only maintain communication connection with one circuit breaker at the same time, then after the electric energy meter serving as the automatic pairing control subject completes the communication module pairing connection, the MAC address of the circuit breaker electrically connected to its main circuit is saved as the last paired MAC address, and then the network pairing of the circuit breaker electrically connected to its main circuit is disconnected, and the unpaired circuit breakers are continuously scanned in step 2, and the circuit breaker with a MAC address different from the last paired MAC address is first selected as the new circuit breaker to be paired, until only the circuit breaker with the last paired MAC address can be scanned. The second wireless communication module of the circuit breaker only needs to support communication connection with only one electric energy meter at the same time.

[0089] Step 2, the automatic pairing control body scans the circuit breakers to determine the circuit breaker that first performs communication module pairing and connection, which is the circuit breaker to be paired, and the automatic pairing control body connects to the second wireless communication module of the circuit breaker to be paired through the first wireless communication module according to the MAC address of the circuit breaker to be paired.

[0090] The second wireless communication modules of each circuit breaker that has not completed the communication module pairing connection are sending a broadcast signal, and the broadcast signal includes the MAC address of the circuit breaker and its pairing status information. Preferably, in step 2, there are also multiple methods for determining the circuit breaker to be paired for the first communication module pairing, such as one method is to use the circuit breaker first scanned by the first wireless communication module of the automatic pairing control body as the circuit breaker to be paired for the first communication module pairing; or, the circuit breaker with the strongest signal scanned by the first wireless communication module of the automatic pairing control body is used as the circuit breaker to be paired for the first communication module pairing; or, the MAC addresses of the circuit breakers scanned by the first wireless communication module of the automatic pairing control body are sorted, and the circuit breaker to be paired for the first communication module pairing connection is determined according to the sorting. The automatic pairing control body is connected to the second wireless communication module of the circuit breaker to be paired through the first wireless communication module according to the MAC address of the circuit breaker to be paired.

[0091] Further preferably, after determining the circuit breaker to be paired with the communication module first, the automatic pairing control body sends the circuit breaker information of the circuit breaker to be paired to the management background, and the circuit breaker information includes the circuit breaker serial number and / or MAC address and / or other information.

[0092] Step 3: the automatic pairing control body sends a start internal load command to the circuit breaker to be paired, and the automatic pairing control body disconnects the communication connection with the circuit breaker to be paired.

[0093] Preferably, in step 3, after the circuit breaker to be paired receives the command to start the internal load, it returns confirmation information to the automatic pairing control body. After the automatic pairing control body receives the confirmation information returned by the circuit breaker to be paired, it disconnects the communication connection with the circuit breaker to be paired; by the circuit breaker to be paired returning the confirmation information to the automatic pairing control body, it is ensured that the command to start the internal load is indeed delivered to the circuit breaker to be paired, thereby avoiding the situation where the circuit breaker to be paired cannot successfully start its internal load due to failure to receive the load start command.

[0094] Step 4: the circuit breaker to be paired starts its internal load and sends a broadcast signal through the second wireless communication module. The broadcast signal includes the MAC address of the circuit breaker to be paired and its pairing status information.

[0095] Preferably, in step 4, after the circuit breaker to be paired detects that its communication connection with the automatic pairing control body is disconnected, the circuit breaker to be paired automatically changes its pairing status information to the pairing state and re-sends a broadcast signal to the outside, wherein the broadcast signal includes the MAC address of the circuit breaker to be paired and its pairing status information, and the circuit breaker to be paired starts its internal load.

[0096] Preferably, in step 4, after the circuit breaker to be paired starts the internal load and waits for time t0, the paired circuit breaker unloads the internal load and maintains the broadcasting status information as continuous broadcasting during pairing, t0>0s, t0 is the minimum time that the main circuit current / power mutation signal can be detected by the electric energy meter, usually only 2 to 3 sampling cycles of the electric energy meter are required. The circuit breaker to be paired maintains the pairing state and waits for the electric energy meter to connect and pair. When the waiting time exceeds t1, the circuit breaker to be paired exits the pairing state and changes the pairing state information to unpaired, and returns to step 1. t1>0s, t1 is the maximum time required for normal pairing, and a small margin is left. After the circuit breaker to be paired starts the internal load and waits for time t0, it actively unloads the internal load to avoid damage to the internal load due to overheating due to long-term work.

[0097] Step 5, including step 5a.

[0098] Step 5a, multiple electric energy meters monitor their respective main circuit currents or powers in real time. The electric energy meter that detects a sudden increase in its own main circuit current or power is the electric energy meter to be paired. The electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module, connects with the circuit breaker in the pairing state information in the broadcast signal, and completes the communication module pairing.

[0099] The electric energy meter that detects a sudden increase in its own main circuit current or power scans the broadcast signals of each circuit breaker through the first wireless communication module. If the scanned circuit breaker has the pairing status information of being paired, it is determined that this circuit breaker is the circuit breaker to be paired, and the communication connection with the circuit breaker to be paired is completed according to the MAC address of the circuit breaker to be paired in the broadcast signal to complete the communication module pairing. In this embodiment, the electric energy meter to be paired identifies the circuit breaker to be paired based on the pairing status information broadcast by the circuit breaker to be paired. The pairing status information of the circuit breaker to be paired is pairing, and the pairing status information of the remaining circuit breakers is unpaired. After the communication module connection is completed, the circuit breaker stops sending the broadcast signal, the electric energy meter to be paired saves the MAC address of the circuit breaker to be paired and uploads the pairing completion information to the management background, and the pairing completion information includes the serial number of the electric energy meter to be paired and / or the serial number and / or MAC of the circuit breaker and other information.

[0100] Preferably, the step 5 further comprises step 5b;

[0101] Step 5b, after the paired electric energy meter completes the pairing connection of the communication module, it sends a start internal load command to the circuit breaker with which it has completed the pairing connection of the communication module. After receiving the start internal load command, the circuit breaker starts the internal load. If the paired electric energy meter detects that its main circuit current or power suddenly increases again, the MAC address of the circuit breaker to be paired is saved and the pairing information is uploaded to the management background. The pairing information includes the serial number of the paired electric energy meter, the serial number and MAC address of the circuit breaker to be paired, and the pairing result information of the successful pairing. The paired electric energy meter sends the start internal load command to the circuit breaker with which it has completed the pairing connection of the communication module and monitors that its main circuit current or power suddenly increases, thereby ensuring the accuracy of the pairing of the electric energy meter and the circuit breaker. If the energy meter to be paired does not detect a sudden increase in its own main circuit current or power again, it indicates a pairing error and the pairing fails. A pairing failure command is sent to the circuit breaker to be paired. After receiving the confirmation command from the circuit breaker to be paired, the pairing connection with the communication module of the circuit breaker to be paired is disconnected. The energy meter to be paired reports the pairing information to the management background. The pairing information includes the serial number of the energy meter to be paired, the serial number and / or MAC address of the circuit breaker to be paired, and the pairing result information of the failed pairing. After receiving the pairing failure command of the energy meter to be paired, the circuit breaker to be paired returns a confirmation message, and after detecting that the energy meter to be paired has disconnected the communication module, the pairing status information is changed to unpaired and the broadcast information is sent again.

[0102] Furthermore, in step 1, after the management background designates an electric energy meter as the automatic pairing control subject, it starts waiting for pairing information, or in step 2, after the management background receives the circuit breaker information to be paired sent by the electric energy meter, it starts waiting for pairing information. If the management background has not received any pairing information uploaded by the electric energy meter after waiting time t2, t2>0s, t2 is the maximum time required to complete a normal pairing with a small margin, it indicates that the pairing fails, and the management background starts to start pairing the communication module of the next circuit breaker through the automatic pairing control subject; if the management background receives the pairing information, it indicates that the pairing is successful, and the management background starts pairing the communication module of the next circuit breaker through the automatic pairing control subject.

[0103] If the management background has not received any pairing information uploaded by the electric energy meter after the waiting time t2, it is considered that the pairing has failed. The management background re-designates an electric energy meter as the automatic pairing control subject, or still uses the previous electric energy meter as the automatic pairing control subject. The management background sends a pairing failure message to the automatic pairing control subject, and the automatic pairing control subject starts to repeat steps 2-5 to re-determine the circuit breaker to be paired that is the first to perform communication module pairing connection.

[0104] Preferably, in order to avoid selecting the circuit breaker that failed to pair last time as the circuit breaker to be paired again, the automatic pairing control body remains unchanged throughout the entire pairing process. After receiving the pairing failure information, the automatic pairing control body saves the MAC address of the circuit breaker to be paired to the pairing failure circuit breaker list, scans the circuit breakers in step 2, selects the circuit breaker whose MAC address is different from the MAC address in the failed circuit breaker list as the new circuit breaker to be paired, and sends the circuit breaker information of the new circuit breaker to be paired to the management background, and performs subsequent steps. After completing the pairing of other circuit breakers, retry the pairing of the circuit breaker in the pairing failure circuit breaker list. In addition, in step 2, after the automatic pairing control body determines the circuit breaker to be paired, it sends the circuit breaker information of the circuit breaker to be paired to the management background. If the management background has not received any pairing information uploaded by the electric energy meter after waiting time t2, it can be determined that the pairing of the circuit breaker has failed. The pairing failure information sent by the management background to the automatic pairing control body can include the circuit breaker information of the circuit breaker. At this time, even if the management background re-designates an electric energy meter as the automatic pairing control body, it can still avoid selecting the circuit breaker that failed to pair last time as the circuit breaker to be paired again.

[0105] It should be noted that if a circuit breaker cannot complete the communication module pairing connection with its corresponding electric energy meter after n communication module pairing, n>1 and is an integer, the management background will mark the circuit breaker and / or the circuit breaker will send a fault alarm signal to enable the staff to eliminate the fault as soon as possible.

[0106] Step 6, repeating steps 1-5, so that multiple energy meters are paired with their corresponding circuit breakers respectively to complete the communication module pairing connection, until all energy meters are paired with their corresponding circuit breakers or the pairing time times out.

[0107] Preferably, the management background controls the repetition of steps 1-5. After completing the pairing of a circuit breaker, the management background sends a pairing command to the selected automatic pairing control subject, and starts to repeat steps 1-5 until all the electric energy meters connected to the management background are paired with the communication modules of the corresponding circuit breakers. After receiving the pairing information (including the pairing information of successful or failed pairing) or waiting for timeout, the management background sends a pairing command to the selected automatic pairing control subject (it can also be understood as sending a distribution command to the corresponding electric energy meter, that is, selecting it as the automatic pairing control subject) to start the next pairing.

[0108] Combination Figure 2-4 As shown, the automatic pairing method of the communication module between the electric energy meter and the circuit breaker of the present invention will be further described below.

[0109] like Figure 4As shown, each electric energy meter includes a processing unit and a first wireless communication module. The processing unit is a microprocessor, which is used to execute the automatic pairing method of the communication module of the electric energy meter part of the present invention; the processing unit is a microprocessor, and can also be a combination of multiple microprocessors. Figure 4 In the embodiment shown in the figure, the processing unit of the electric energy meter includes a metering core and a management core, the management core is connected to the metering core and the first line communication module respectively, and the management core is also connected to the management background through a communication module (not shown in the figure), and the first wireless communication module is a Bluetooth communication module. Specifically, the metering core is connected to the lower end of the electric energy meter (i.e. Figure 2 As shown, the electric energy meter and the power line of the circuit breaker can measure electrical related physical quantities (including voltage, current, power, power factor, electric energy, harmonics, frequency, etc.), and can also exchange data with the management core; the management core realizes data exchange between the metering core and the first wireless communication module, and can also communicate with the management background through the communication module; the first wireless communication module can be connected by Bluetooth pairing with the second wireless communication module of the circuit breaker to realize communication and data exchange between the electric energy meter and the circuit breaker.

[0110] like Figure 3 As shown, each circuit breaker includes a control unit, a second wireless communication module and an internal load.

[0111] like Figure 3 As shown, an embodiment of a circuit breaker of the present invention. The circuit breaker of the present invention comprises a circuit breaker body and a driving module, the driving module comprises a driving pole power supply and a control unit, an execution unit, an internal load, and a second wireless communication module electrically connected to the driving pole power supply respectively, the control unit is connected to the internal load, the execution unit, and the second wireless communication module respectively, the execution unit is connected to the circuit breaker body driving, and drives the circuit breaker body to open and close the switch; when in use, the electric energy meter, the circuit breaker body and the user load are connected in series in sequence through the power line, the driving pole power supply is electrically connected to the main circuit of the electric energy meter to obtain power, and provide working power for the driving module, the second wireless communication module is a Bluetooth communication module, the second wireless communication module is used to pair with the first wireless communication module of the electric energy meter via Bluetooth to realize communication and data exchange between the circuit breaker and the electric energy meter, the control unit is a single chip microcomputer or a microprocessor, and is used to execute the automatic pairing method of the communication module of the circuit breaker part of the present invention;.

[0112] Specifically, the circuit breaker body has the functions of isolating, disconnecting and connecting the main circuit current, and is used for fault protection of the main circuit; the execution unit has the function of realizing actions such as automatic closing and tripping of the circuit breaker; the control unit has the functions of driving the execution unit to act, detecting various status signals, controlling the start / unload of the internal load, exchanging data with the second wireless communication module, and processing data; the internal load has the function of consuming relatively large power. When the internal load is started, the power consumption of the driving pole power supply increases, and the main circuit current / power rises. When the internal load is unloaded, the power consumption of the driving pole power supply decreases, and the main circuit current / power drops; the driving pole power supply draws power from the main circuit and provides working power for the driving module; the second wireless communication module is connected to the first wireless communication module of the electric energy meter through Bluetooth pairing to realize communication and data exchange between the circuit breaker and the electric energy meter.

[0113] Preferably, the execution unit includes a driving device and a tripping device; the driving device includes a motor, a gear and a driving member, the tripping device includes a tripping rod, and the motor drives the driving member and the tripping rod to move through the gear. Usually, the driving module is an independent module that can be inserted into one side of the circuit breaker body, so that the driving member can cooperate with the handle of the circuit breaker body to close the circuit breaker body, and the tripping rod cooperates with the lock of the circuit breaker body to open the circuit breaker body. The control unit can control the motor to rotate so that the driving member moves to drive the circuit breaker body to close, and control the motor to rotate to drive the tripping rod to move the lock of the circuit breaker body, so that the circuit breaker trips to achieve opening.

[0114] Preferably, the circuit breaker body includes an operating mechanism, a bimetallic element, an electromagnetic system and a conductive system, and the conductive system includes a moving contact and a static contact used in conjunction with each other; the operating mechanism is connected to the moving contact drive, driving the moving contact to close / disconnect with the static contact; the bimetallic element and the electromagnetic system are respectively matched with the lock of the operating mechanism, and when an overload or short circuit fault occurs, the bimetallic element and the electromagnetic system respectively act to release the lock and tripping of the operating mechanism, so that the circuit breaker body trips. Further, the circuit breaker body also includes a state detection device connected to the control unit, and when the moving contact and the static contact of the conductive system are closed or disconnected, the state monitoring device sends a closing or opening signal to the control unit. The state monitoring device is a micro switch arranged on the moving contact or the moving track of the operating mechanism, or a detection circuit connected to the static contact, which outputs a high level when the moving and static contacts are closed, and outputs a low level when they are disconnected.

[0115] Combination Figure 2-4As shown, the automatic pairing method of the communication module between the electric energy meter and the circuit breaker of the present invention is further illustrated. The electric energy meter 1, the electric energy meter 2 to the electric energy meter n are respectively connected to the management background for communication. The electric energy meter 1, the circuit breaker body of the circuit breaker 1, and the user load 1 are sequentially connected in series through the power line. The electric energy meter 2, the circuit breaker body of the circuit breaker 2, and the user load 2 are sequentially connected in series through the power line. By analogy, the electric energy meter n, the circuit breaker body of the circuit breaker n, and the user load n are sequentially connected in series through the power line. The main circuit of the electric energy meter 1 is grounded through the internal load of the circuit breaker 1, the main circuit of the electric energy meter 2 is grounded through the internal load of the circuit breaker 2, and by analogy, the main circuit of the electric energy meter n is grounded through the internal load of the circuit breaker n.

[0116] In the initial state, all electric energy meters and circuit breakers have not completed the communication module pairing connection, the pairing status information of the circuit breakers are all in the unpaired state, the circuit breaker bodies of the circuit breakers are all in the open state, the internal load of the circuit breaker is in the unloaded state, and the circuit breaker sends a broadcast signal through the second wireless communication module, and the broadcast signal includes its MAC address information and pairing status information. Preferably, at the same time, each circuit breaker can only maintain a communication connection with one electric energy meter, and at the same time, each electric energy meter can maintain a communication connection with at least two circuit breakers.

[0117] The method for automatically pairing the communication modules of an electric energy meter and a circuit breaker of the present invention comprises the following steps:

[0118] Step 1, the management background obtains the list of electric energy meters that have not completed the pairing connection of the communication module, and the management background randomly designates electric energy meter 1 as the automatic pairing control subject. During the entire pairing process, electric energy meter 1 is always the automatic pairing control subject. The management background monitors the information sent by each electric energy meter. If the management background still does not receive any pairing information uploaded by the electric energy meter or the circuit breaker information of the circuit breaker to be paired uploaded by the automatic pairing control subject after waiting time t2, a command is sent to notify the automatic pairing control subject that the pairing fails, so that the automatic pairing control subject can pair the next circuit breaker;

[0119] In step 2, the electric energy meter 1 scans the circuit breaker and selects the circuit breaker 2 whose Bluetooth pairing status is unpaired, which is scanned first, as the circuit breaker to be paired. The electric energy meter 1 communicates with the circuit breaker 2 according to the Bluetooth MAC address broadcast by the circuit breaker 2, and sends the circuit breaker information of the circuit breaker 2 to the management background, wherein the circuit breaker information includes the MAC address of the circuit breaker 2.

[0120] Step 3, the energy meter 1 sends a command to start the internal load to the circuit breaker 2. After receiving the command to start the internal load, the circuit breaker 2 returns a confirmation message to the energy meter 1. After receiving the confirmation message, the energy meter 1 disconnects the communication connection with the circuit breaker 2.

[0121] Step 4: After the circuit breaker 2 detects that the communication connection with the electric energy meter 1 is disconnected, the circuit breaker 2 starts its internal load, automatically changes its pairing status information to the pairing status, and sends a broadcast signal to the outside, the broadcast signal includes its MAC address information, and the information that the pairing status is the pairing status. The circuit breaker 2 starts timing, and after the circuit breaker starts the internal load for more than time t0, the circuit breaker to be paired unloads the internal load.

[0122] Step 5a, all electric energy meters (electric energy meter 1 to electric energy meter n) monitor their respective main circuit current or power in real time. Electric energy meter 2 will detect that its main circuit current or power suddenly increases. Electric energy meter 2 is the electric energy meter to be paired. Electric energy meter 2 scans the broadcast signals of each circuit breaker and communicates with the circuit breaker whose pairing status information in the broadcast signal is pairing. (At this time, only the pairing status information of circuit breaker 2 is pairing, and the pairing information of all other circuit breakers is not paired.) The electric energy meter to be paired identifies circuit breaker 2 through the pairing status information in the broadcast information, and electric energy meter 2 completes the Bluetooth pairing connection with circuit breaker 2 based on the Bluetooth MAC address of circuit breaker 2.

[0123] Step 5b, the energy meter 2 sends a command to start the internal load to the circuit breaker 2 again. After receiving the command to start the internal load, the circuit breaker 2 starts its internal load. The energy meter 2 will detect a sudden increase in its main circuit current or power again. The energy meter 2 saves the MAC address of the circuit breaker 2 and reports the pairing information to the management background. The pairing information includes the serial number of the energy meter 2, the serial number and Bluetooth MAC address of the circuit breaker 2, and the pairing success information. If the energy meter 2 does not detect a sudden increase in its main circuit current or power again, it indicates a pairing error, and the pairing fails this time. The energy meter 2 reports the pairing information to the management background. The pairing information includes the serial number of the energy meter 2, the serial number and Bluetooth MAC address of the circuit breaker 2, and the pairing failure information.

[0124] Based on the same inventive concept, the present application also provides a communication module automatic pairing device 500 for an electric energy meter and a circuit breaker, such as Figure 5 As shown, including:

[0125] The circuit breaker determination unit 510 to be paired specifies any electric energy meter as an automatic pairing control subject; the automatic pairing control subject scans each circuit breaker and determines the circuit breaker that is paired and connected first as the circuit breaker to be paired;

[0126] An internal load command sending unit 520, wherein the automatic pairing control body sends a start internal load command to the circuit breaker to be paired, and then disconnects the communication connection with the circuit breaker to be paired;

[0127] The internal load starting unit 530 starts the internal load according to the received command to start the internal load by the circuit breaker to be paired;

[0128] The electric energy meter to be paired determining unit 540, when the electric energy meter detects that its main circuit current or power increases, the electric energy meter is the electric energy meter to be paired;

[0129] The automatic pairing unit 550 performs automatic pairing connection with the electric energy meter to be paired and the circuit breaker whose broadcast signal is in the pairing state.

[0130] Preferably, the circuit breaker determination unit to be paired includes:

[0131] Scan subunit, automatically pair with the communication module of the control body, and scan each circuit breaker;

[0132] The circuit breaker to be paired determining subunit determines the circuit breaker that is first paired and connected with the communication module as the circuit breaker to be paired.

[0133] Preferably, the automatic pairing unit comprises:

[0134] The scanning subunit, the electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module;

[0135] The circuit breaker status acquisition subunit acquires the circuit breaker whose pairing status is the pairing status in the broadcast signal obtained by the paired electric energy meter;

[0136] Automatic pairing subunit, the electric energy meter to be paired is automatically paired and connected with the circuit breaker in the pairing state.

[0137] According to the automatic pairing method of the communication modules of the electric energy meter and the circuit breaker of the present invention, the circuit breaker can complete the pairing connection with the communication module of the electric energy meter corresponding to it only needs to start the internal load once, which significantly improves the efficiency of the pairing of the communication modules of the electric energy meter and the circuit breaker, and the internal load generates little heat and will not be damaged due to overheating during the pairing process; further, the electric energy meter determines whether the circuit breaker to be paired is connected to its main circuit by monitoring its main circuit current or power mutation signal, which improves the efficiency and accuracy of monitoring, avoids the internal load of the circuit breaker from working for a long time and being damaged by overheating, and effectively improves the probability of successful first pairing of the circuit breaker.

[0138] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A method for automatically pairing a communication module between an electric energy meter and a circuit breaker, characterized in that: include: Designate any electric energy meter as the automatic pairing control subject; The automatic pairing control body scans each circuit breaker and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired, including: Automatically pairing the first wireless communication module of the control body and scanning each circuit breaker; The circuit breaker that is first paired and connected with the first wireless communication module is determined as the circuit breaker to be paired; the first wireless communication module of the automatic pairing control body is connected to the second wireless communication module of the circuit breaker to be paired through the MAC address of the circuit breaker; After the automatic pairing control body sends a command to start the internal load to the circuit breaker to be paired, the communication connection with the circuit breaker to be paired is disconnected; The circuit breaker to be paired starts the internal load according to the received command to start the internal load; When the electric energy meter detects that its main circuit current or power increases, the electric energy meter is an electric energy meter to be paired, including: Multiple electric energy meters monitor their respective main circuit current or power in real time; The electric energy meter with the increased main circuit current or power is determined as the electric energy meter to be paired; The broadcast signal of the electric energy meter to be paired with the circuit breaker is the circuit breaker in the pairing state, and automatic pairing connection is performed, including: The electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module; The electric energy meter to be paired obtains a broadcast signal, and the circuit breaker in the pairing state is in the pairing state; The electric energy meter to be paired is automatically paired and connected with the circuit breaker in the pairing state; After the paired electric energy meter completes the pairing connection of the communication module, it sends a start internal load command to the circuit breaker with which it has completed the pairing connection of the communication module. After receiving the start internal load command, the circuit breaker starts the internal load. If the paired electric energy meter detects that its main circuit current or power suddenly increases again, the MAC address of the paired circuit breaker is saved and the pairing information is uploaded to the management background. The pairing information includes the serial number of the paired electric energy meter, the serial number and MAC address of the paired circuit breaker, and the pairing result information of the successful pairing.

2. The method according to claim 1, characterized in that Designate any electric energy meter as the automatic pairing control subject, including: Through the management background, any one of the multiple electricity meters can be designated as the automatic pairing control subject.

3. The method according to claim 1, characterized in that The first wireless communication module and the second wireless communication module are both Bluetooth communication modules.

4. An automatic pairing device for communication modules of an electric energy meter and a circuit breaker, characterized in that: include: The circuit breaker determination unit to be paired designates any electric energy meter as an automatic pairing control subject; The automatic pairing control body scans each circuit breaker and determines the circuit breaker that is first paired and connected as the circuit breaker to be paired, including: Automatically pairing the first wireless communication module of the control body and scanning each circuit breaker; The circuit breaker that is first paired and connected with the first wireless communication module is determined as the circuit breaker to be paired; the first wireless communication module of the automatic pairing control body is connected to the second wireless communication module of the circuit breaker to be paired through the MAC address of the circuit breaker; An internal load command sending unit, wherein the automatic pairing control body sends a start internal load command to the circuit breaker to be paired, and then disconnects the communication connection with the circuit breaker to be paired; An internal load starting unit, wherein the circuit breaker to be paired starts the internal load according to the received command to start the internal load; The unit for determining the electric energy meter to be paired, when the electric energy meter detects that its main circuit current or power increases, the electric energy meter is the electric energy meter to be paired, including: Multiple electric energy meters monitor their respective main circuit current or power in real time; The electric energy meter with the increased main circuit current or power is determined as the electric energy meter to be paired; The automatic pairing unit performs automatic pairing connection when the broadcast signal of the electric energy meter to be paired and the circuit breaker is in the pairing state, including: The electric energy meter to be paired scans the broadcast signals of each circuit breaker through the first wireless communication module; The electric energy meter to be paired obtains a broadcast signal, and the circuit breaker in the pairing state is in the pairing state; The electric energy meter to be paired is automatically paired and connected with the circuit breaker in the pairing state; After the paired electric energy meter completes the pairing connection of the communication module, it sends a start internal load command to the circuit breaker with which it has completed the pairing connection of the communication module. After receiving the start internal load command, the circuit breaker starts the internal load. If the paired electric energy meter detects that its main circuit current or power suddenly increases again, the MAC address of the paired circuit breaker is saved and the pairing information is uploaded to the management background. The pairing information includes the serial number of the paired electric energy meter, the serial number and MAC address of the paired circuit breaker, and the pairing result information of the successful pairing.

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