Energy meter battery undervoltage detection device

Abstract

The present invention relates to an electric energy meter battery undervoltage detection device, comprising a battery undervoltage detector and a power supply device, wherein the battery undervoltage detector comprises a processor, a communication device, a status indication circuit and a key device, wherein the communication device, the status indication circuit and the key device are all connected to the processor, and the communication device is used to connect the power supply device through the electric energy meter to be tested, and the power supply device comprises a switching component, a control processor, a voltage and current switch component and a power supply interface component, wherein the switching component is connected to the control processor, and the voltage and current switch component is connected to the control processor and the power supply interface component. The power supply device provides different safe and reliable power supplies for the electric energy meter to be tested, and is free of wiring. The user can clearly know whether the battery of the electric energy meter is undervoltage and whether the electric energy meter to be tested has a fault through the status indication of the status indication circuit of the electric energy meter battery undervoltage detection device, thereby avoiding the phenomenon of missed detection and wrong detection caused by manual identification of abnormal code indications on the display screen of the electric energy meter, and the detection efficiency is high.

Description

Technical Field

[0001] The invention relates to the field of power device detection, and in particular to an electric energy meter battery undervoltage detection device. Background Art

[0002] In recent years, with the in-depth promotion of the integrated development of power grid companies, the construction of metering automation systems has begun to take shape, especially smart energy meters have been widely promoted. The application of metering equipment presents the characteristics of large quantity, multiple types, intelligence and complex operating environment.

[0003] There are many problems in the field installation and maintenance of electric energy meters. Among them, the problem of battery undervoltage is particularly prominent, especially for electric energy meters that have been stored in the warehouse for a long time. The clock battery undervoltage alarm will appear during the on-site installation, which may cause the meter clock to be wrong. The wrong time of the meter will cause the rate switching error, the frozen power transfer time error and other problems that affect the normal metering of the meter, thus seriously affecting the user's satisfaction with the power company's service.

[0004] The traditional method of detecting battery undervoltage mainly relies on manual identification of abnormal code indications on the electricity meter display screen after the electricity meter is installed on site. Due to the uneven level of personnel, missed detections and false detections often occur, resulting in low detection efficiency. Summary of the invention

[0005] Based on this, it is necessary to provide an electric energy meter battery undervoltage detection device with high detection efficiency to address the problem of low efficiency of traditional battery undervoltage detection methods.

[0006] A battery undervoltage detection device for an electric energy meter comprises a battery undervoltage detector and a power supply device, wherein the battery undervoltage detector comprises a processor, a communication device, a status indication circuit and a key device, wherein the communication device, the status indication circuit and the key device are all connected to the processor, and the communication device is used to connect the power supply device through the electric energy meter to be tested, and the power supply device comprises a switching component, a control processor, a voltage and current switch component and a power supply interface component, wherein the switching component is connected to the control processor, and the voltage and current switch component is connected to the control processor and the power supply interface component.

[0007] In the above-mentioned electric energy meter battery undervoltage detection device, the power supply interface component of the power supply device is used to place the electric energy meter to be tested, and different safe and reliable power supplies can be provided for the electric energy meter to be tested through the switching component and the voltage and current switch component, and the wiring setting is unnecessary. The button device sends a trigger instruction to the processor to trigger the processor to start. The processor is used to send a battery undervoltage information collection instruction to the electric energy meter to be tested through the communication device, and receive the battery undervoltage information returned through the communication device. The processor detects the received battery undervoltage information and outputs the corresponding control instruction to the status indication circuit for result indication according to the detection result. The user can clearly know whether the battery of the electric energy meter is undervoltage and whether the electric energy meter to be tested is faulty through the status indication of the electric energy meter battery undervoltage detection device, avoiding the phenomenon of missed detection and false detection caused by manual identification of abnormal code indication on the electric energy meter display screen, and the detection efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of a battery undervoltage detection device for an electric energy meter in one embodiment;

[0009] Figure 2 A structural diagram of a battery undervoltage detector in one embodiment;

[0010] Figure 3 This is a structural diagram of a power supply device in an embodiment;

[0011] Figure 4 A schematic diagram of an electric meter operation status word 1 in an embodiment;

[0012] Figure 5 A structural diagram of a battery undervoltage detector in another embodiment;

[0013] Figure 6 Schematic diagram of the structure of a battery undervoltage detection device for an electric energy meter in one embodiment. DETAILED DESCRIPTION

[0014] In one embodiment, Figure 1 , 2 As shown in 3, a battery undervoltage detection device for an electric energy meter includes a battery undervoltage detector 100 and a power supply device 300. The battery undervoltage detector 100 includes a processor 110, a communication device 120, a status indication circuit 130 and a button device 140. The communication device 120, the status indication circuit 130 and the button device 140 are all connected to the processor 110. The communication device 120 is used to connect the power supply device 300 through the electric energy meter to be tested. The power supply device 300 includes a switching component 310, a control processor, a voltage and current switch component 330 and a power supply interface component 340. The switching component 310 is connected to the control processor 320, and the voltage and current switch component 330 is connected to the control processor 320 and the power supply interface component 340.

[0015] Specifically, the power supply interface component 340 of the power supply device 300 is used to place the electric energy meter to be tested, and can provide different safe and reliable power supplies for the electric energy meter to be tested through the switching component 310 and the voltage and current switch component 330, and no wiring is required. The button device 140 sends a trigger instruction to the processor 110 to trigger the processor 110 to start. The processor 110 is used to send a battery undervoltage information collection instruction to the electric energy meter to be tested through the communication device 120, and receive the battery undervoltage information returned through the communication device 120. The processor 110 detects the received battery undervoltage information, and outputs the corresponding control instruction to the status indication circuit 130 for result indication according to the detection result.

[0016] With the above-mentioned electric energy meter battery undervoltage detection device, the user can clearly know whether the electric energy meter battery is undervoltage and whether the electric energy meter to be tested has a fault through the status indication of the electric energy meter battery undervoltage detection device, thereby avoiding the phenomenon of missed detection and wrong detection caused by manual identification of abnormal code indications on the electric energy meter display screen, and the detection efficiency is high.

[0017] In one embodiment, the communication device 120 is a wireless communication device. In this embodiment, the communication device 120 is an infrared transceiver.

[0018] Specifically, the infrared transceiver is used to send the battery undervoltage information collection instruction sent by the processor 110 to the electric energy meter to be tested, collect the internal battery undervoltage information of the electric energy meter to be tested, and receive the internal battery undervoltage information of the electric energy meter to be tested and send it to the processor 110, thereby performing the function of interacting with the communication port information of the electric energy meter to be tested, specifically including single-phase smart electric energy meters and three-phase smart electric energy meters.

[0019] In one embodiment, the infrared transceiver device includes an infrared transmitting circuit 126, an infrared transmitting tube 128, an infrared receiving circuit 122 and an infrared receiving tube 124, the infrared transmitting circuit 126 is connected to the infrared transmitting tube 128, the infrared receiving circuit 122 is connected to the infrared receiving tube 124, the infrared transmitting tube 128 is connected to the processor 110 through the infrared transmitting circuit 126, and the infrared receiving tube 124 is connected to the processor 110 through the infrared receiving circuit 122.

[0020] Specifically, the infrared sending circuit 126 is used to send the battery undervoltage information collection instruction sent by the processor 110 to the electric energy meter to be tested through the infrared transmitting tube 128, collect the internal battery undervoltage information of the electric energy meter to be tested, and receive the internal battery undervoltage information of the electric energy meter to be tested through the infrared receiving tube 124 and send it to the processor 110 through the infrared sending circuit 126, thereby performing the function of interacting with the infrared port information of the electric energy meter to be tested. Furthermore, the infrared in the infrared sending circuit 126 and the infrared receiving circuit 122 can be far infrared or near infrared.

[0021] In this embodiment, if Figure 4As shown, collecting battery undervoltage information is to read the information in the meter operation status 1. The battery undervoltage information is determined by the internal judgment of the meter, and the corresponding undervoltage information will be written in the meter operation status word data frame. As long as the meter status word information is read, it can be known whether it is undervoltage. For example, if the Bit2 clock battery undervoltage bit is 1, it means that the meter clock battery is undervoltage, and so on.

[0022] In one embodiment, the button device 140 includes a button circuit 142 and a button 144 . The button circuit 142 is connected to the button 144 , and the button 144 is connected to the processor 110 via the button circuit 142 .

[0023] Specifically, when the user needs to detect whether the battery of the electric energy meter to be tested is under-voltage, the user can control the button circuit 142 through the button 144 to send a trigger instruction to the processor 110, thereby triggering the processor 110 to start collecting information.

[0024] Furthermore, the detection results include a battery undervoltage indication, a detection success indication and a detection failure indication. The battery undervoltage indication means that when the processor 110 determines that a battery undervoltage fault occurs inside the electric energy meter, the processor 110 sends a first control instruction to the status indication circuit 130 to generate a battery undervoltage indication signal. The detection success indication means that when the processor 110 determines that no battery undervoltage fault occurs inside the electric energy meter, the processor 110 sends a second control instruction to the status indication circuit 130 to generate a detection success indication signal. The detection failure indication means that when the processor 110 cannot read the battery undervoltage information inside the electric energy meter, it indicates that a communication fault has been detected in the electric energy meter, and the processor 110 sends a third control instruction to the status indication circuit 130 to generate a detection failure indication signal. There are multiple forms of expression for the output of the indication signal, as long as it is convenient for the user to identify the detection result according to the form of expression for the output of the indication signal.

[0025] In one embodiment, Figure 5 As shown, the status indication circuit 130 includes a control circuit 132 and an indication device 134 , the control circuit 132 is connected to the indication device 134 , and the control circuit 132 is connected to the processor 110 .

[0026] Specifically, the processor 110 sends the first control instruction, the second control instruction or the third control instruction to the control circuit 132 according to the detection result, and the control circuit 132 generates a corresponding indication signal according to the received first control instruction, the second control instruction or the third control instruction and sends it to the indication device for output.

[0027] In one embodiment, the indicator device 134 includes a status indicator light and / or a buzzer connected to the control circuit 132 .

[0028] Specifically, the composition of the indicating device is not unique and is not limited to the above embodiments. For example, it can be a voice prompt or a text prompt. In the present embodiment, it is a status indicator light and / or a buzzer. The status indicator light is specifically a light emitting diode. The number of the status indicator lights can be one or more. Further, the detection result includes a battery undervoltage indication, a detection success indication, and a detection failure indication. The battery undervoltage indication means that when the processor 110 determines that a battery undervoltage fault occurs inside the electric energy meter, the processor 110 sends a first control instruction to the control circuit 132 in the status indication circuit 130, and the control circuit 132 controls the status indicator light to turn red and stay on, or the buzzer sounds for 2 seconds, or the status indicator light turns red and stays on and the buzzer sounds for 2 seconds. The detection success indication means that when the processor 110 communicates with the electric energy meter through the communication device 120, it is determined that no battery undervoltage fault occurs inside the electric energy meter, and the processor 1 10 sends a second control instruction to the control circuit 132 in the status indication circuit 130, and the control circuit 132 further controls the control indicator light to turn green and always on, or the buzzer sounds for 0.5s, or the status indicator light turns green and always on and the buzzer sounds for 0.5s. The detection failure indication means that when the processor 110 communicates with the electric energy meter through the communication device 120, a communication failure occurs in the electric energy meter and the battery undervoltage information inside the electric energy meter cannot be read. The processor 110 sends a third control instruction to the control circuit 132 in the status indication circuit 130, and the control circuit 132 further controls the control indicator light to turn yellow and always on, or the buzzer sounds 3 times at a frequency of 2Hz, or the status indicator light turns yellow and always on and the buzzer sounds 3 times at a frequency of 2Hz. The user can clearly know whether the battery of the electric energy meter to be tested is undervoltage and whether the electric energy meter to be tested has a fault through the frequency and length of the sound of the status indicator light and / or the buzzer.

[0029] Furthermore, the user can be reminded by a buzzer alone or in combination with a status indicator light. After the processor 110 reads the battery undervoltage information of the energy meter through the infrared receiving circuit 122 and the infrared sending circuit 126, the corresponding instruction is transmitted to the buzzer through the control circuit 132 in the status indication circuit 130, and the buzzer emits a response prompt sound according to the corresponding instruction. This avoids the phenomenon of missed detection or wrong detection caused by manual identification of abnormal code indications on the display screen of the energy meter, and the detection efficiency is high.

[0030] In one embodiment, the battery undervoltage detector 100 further includes a power supply device, which includes a power supply circuit 152 and a power supply 154 . The power supply 154 is connected to the processor 110 via the power supply circuit 152 .

[0031] Specifically, the power circuit 152 can ensure that the power supply 154 is safe and reliable, and has a battery reverse connection protection function. The battery is powered by 2 lithium batteries and has a power switch. The power switch can be turned off when not in use to save energy.

[0032] In one embodiment, the power supply device further includes a first power switch connected to the power supply circuit 152 .

[0033] In one embodiment, the battery undervoltage detector 100 further includes a display screen connected to the processor 110 .

[0034] Specifically, the display screen is used to display the test results, so that the user can more directly determine whether the battery is under-voltage, thereby improving the detection efficiency.

[0035] In one embodiment, processor 110 is a 16-bit ARM processor.

[0036] In one embodiment, the power supply device 300 also includes a power supply and an isolated power supply. The power supply is connected to the isolated power supply. The power supply is used to power the power supply device 300 and can be powered by the mains. The isolated power supply is connected to the switching component 310 for isolation, including converting the 220V power supply into 57.7V / 220V / 380V to ensure the safety of the user.

[0037] In one embodiment, Figure 6 As shown, the switching component 310 includes a voltage switching switch and a three-phase three-wire-three-phase four-wire switching switch, and the three-phase three-wire-three-phase four-wire switching switch connects the voltage switching switch and the control processor 320.

[0038] Specifically, the voltage switch and the three-phase three-wire-three-phase four-wire switch need to be switched according to the specific requirements of the electric energy meter to be tested. The voltage switch can switch between 220V, 100V and 57.7V, and the three-phase three-wire-three-phase four-wire switch can switch between three-phase three-wire transmission lines and three-phase four-wire transmission lines, which is suitable for various types of electric energy meters to be tested.

[0039] In one embodiment, the power supply interface component 340 includes a single-phase or three-phase interface component, and the control processor 320 is connected to the single-phase or three-phase interface component through the voltage and current switch component 330 .

[0040] In one embodiment, the power supply device 300 further includes a communication circuit and a touch display screen, and the touch display screen is connected to the electric energy meter to be tested via the communication circuit.

[0041] Specifically, the touch display screen of the power supply device 300 communicates with the electric energy meter to be tested through the powered circuit, displays the communication fault, or reads the internal fault information of the electric energy meter, such as communication fault, etc., and further detects other fault information of the electric energy meter. Furthermore, the powered circuit is an RS485 bus.

[0042] In one embodiment, the power supply device 300 further includes a status light indicating device, which is connected to the switching component 310 and the control processor 320 .

[0043] Specifically, when the voltage switching switch and the three-phase three-wire-three-phase four-wire switching switch in the switching component 310 switch the voltage value and the three-phase three-wire-three-phase four-wire, the status light indicator will display the corresponding color accordingly. For example, when the voltage switching switch is switched to 220V, the three-phase three-wire-three-phase four-wire switching switch is switched to three-phase four-wire, the status light indicator will be displayed in red; when the voltage switching switch is switched to 100V, the three-phase three-wire-three-phase four-wire switching switch is switched to three-phase three-wire, the status light indicator will be displayed in blue. In this way, the staff can know the voltage output to the electric energy meter to be tested and the type of transmission line by visually checking the color of the status light indicator, which is simple and intuitive.

[0044] In one embodiment, the voltage and current switch component 330 includes a voltage switch component and a current regulation component, and both the voltage switch component and the current regulation component are connected to the control processor 320 and the power supply interface component 340 .

[0045] Specifically, the voltage switch component is used to control the on and off of the voltage of the power supply interface component 340, and can control the on and off of the voltage of any one phase of a single phase or a three-phase. The current regulating component is used to adjust the current gear of the power supply interface component 340 to 5A or 1A, and can adjust the current gear of a single phase or a three-phase. The voltage and current of the electric energy meter to be tested are directly adjusted through the modular wiring terminals, thereby improving the convenience, safety and effectiveness of detection.

[0046] In one embodiment, the power supply device 300 further includes a second power switch, through which the power supply is connected to the isolated power supply, and the second power switch is used to control the opening and closing of the power supply device 300.

[0047] In one embodiment, the electric energy meter battery undervoltage detection device also includes a shell, the battery undervoltage detector 100 and the power supply device 300 are arranged in the shell, the processor 110 is arranged in the shell, the communication device 120, the status indication circuit 130 and the button device 140 are arranged in the shell, the switching component 310 and the voltage and current switch component 330 are both arranged in the shell, the control processor 320 is located in the shell, the outer surface of the shell is provided with an electric energy meter to be tested installation area, and the power supply interface component 340 is arranged in the installation area of ​​the electric energy meter to be tested.

[0048] Specifically, the status light indicator device is arranged on the shell, and the battery undervoltage detector 100 and the power supply device 300 are arranged on the shell. On the one hand, the battery undervoltage detector 100 and the power supply device 300 can be protected, and on the other hand, the portability can be increased and the detection convenience of the user can be improved.

[0049] In one embodiment, the electric energy meter battery undervoltage detection device further includes a fixing device, which is disposed in an installation area of ​​the electric energy meter to be tested on the outer surface of the shell and is used to fix the electric energy meter to be tested.

[0050] In a specific application scenario, the user installs the electric energy meter to be tested on the power supply interface component 340 of the power supply device 300, installs the power plug of the power supply device 300 on the mains socket, turns on the second power switch of the power supply device 300, and the touch display screen of the power supply device 300 communicates with the electric energy meter through RS485 to read the internal fault information of the electric energy meter, turns on the first power switch of the battery undervoltage detector 100, triggers the processor through the button device 140 to communicate with the electric energy meter through far infrared or near infrared, and the electric energy meter battery undervoltage detector 100 reads the electric energy meter battery undervoltage status information through far infrared or near infrared, performs diagnostic analysis of the battery undervoltage fault, and performs fault indication and sound prompt according to the diagnostic analysis results, turns off the first power switch of the battery undervoltage quick detector and the second power switch of the power supply device 300, separates the power plug of the power supply device 300 from the mains socket, removes the electric energy meter from the power supply device 300, and completes the detection.

[0051] The above-mentioned electric energy meter battery undervoltage detection device installs the electric energy meter to be tested in the electric energy meter installation area on the outer surface of the shell, the switching component 310 can switch the voltage value and three-phase three-wire / three-phase four-wire, the voltage and current adjustment component 330 can control the voltage of the three-phase transmission line and adjust the current gear of the three-phase transmission line to 5A or 1A, the power supply interface component 340 receives the switching control signal and outputs it to the electric energy meter to be tested, the control processor 320 can perform parameter detection on the electric energy meter to be tested in real time, communicate with the electric energy meter to be tested, and can detect internal faults of the electric energy meter to be tested, such as communication faults, etc., which can be targeted Parameters can be adjusted for different electricity meters to suit the working environment of the electricity meter. It does not require wiring settings, is plug-and-play, easy to operate, simple and intuitive, saves a lot of manpower and material resources, and effectively prevents parameter configuration errors, effectively improving work efficiency and reliability. Before the electricity meter is shipped out for installation, a rapid battery undervoltage detection can be performed on the meter, effectively preventing the installation of electricity meters with battery failures due to long-term storage at the electricity metering site. At the same time, during on-site operation and maintenance, a rapid battery undervoltage detection can be performed on the on-site operating electricity meter, realizing early warning of battery failure electricity meters, with high detection efficiency, thereby improving the company's electricity service level.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An electric energy meter battery undervoltage detection device, characterized in that: It includes a battery undervoltage detector and a power supply device, the battery undervoltage detector includes a processor, a communication device, a state indication circuit and a key device, the communication device, the state indication circuit and the key device are all connected to the processor, the communication device is used to connect the power supply device through the electric energy meter to be tested, the power supply device includes a switching component, a control processor, a voltage and current switch component and a power supply interface component, the switching component is connected to the control processor, and the voltage and current switch component is connected to the control processor and the power supply interface component; The power supply interface component of the power supply device is used to place the electric energy meter to be tested, and provides different safe and reliable power supplies for the electric energy meter to be tested through the switching component and the voltage and current switch component; The processor is used to send a command for collecting battery undervoltage information to the electric energy meter to be tested through the communication device, and receive the battery undervoltage information returned by the communication device; wherein collecting the battery undervoltage information is to read the information in the running state of the electric energy meter, the battery undervoltage information is determined by the internal judgment of the electric energy meter to be tested, and the corresponding undervoltage information is written in the electric energy meter running state word data frame, and by reading the electric energy meter running state word data frame, it is determined whether the electric energy meter to be tested is undervoltage; The voltage and current switch component includes a voltage switch component and a current regulating component, both of which are connected to the control processor and the power supply interface component. The voltage switch component is used to control the on and off of the voltage of the power supply interface component, and the current regulating component is used to adjust the current gear of the power supply interface component to 5A or 1A.

2. The electric energy meter battery undervoltage detection device according to claim 1, characterized in that: The communication device is an infrared transceiver.

3. The electric energy meter battery undervoltage detection device according to claim 2, characterized in that: The infrared transceiver device includes an infrared sending circuit, an infrared transmitting tube, an infrared receiving circuit and an infrared receiving tube. The infrared sending circuit is connected to the infrared transmitting tube, the infrared receiving circuit is connected to the infrared receiving tube, the infrared transmitting tube is connected to the processor through the infrared sending circuit, and the infrared receiving tube is connected to the processor through the infrared receiving circuit.

4. The electric energy meter battery undervoltage detection device according to claim 1, characterized in that: The key device comprises a key circuit and a key, wherein the key circuit is connected to the key, and the key is connected to the processor via the key circuit.

5. The electric energy meter battery undervoltage detection device according to claim 1, characterized in that: The state indicating circuit comprises a control circuit and an indicating device, wherein the control circuit is connected to the indicating device, and the control circuit is connected to the processor.

6. The electric energy meter battery undervoltage detection device according to claim 5, characterized in that: The indicating device comprises a status indicator light and / or a buzzer connected to the control circuit.

7. The electric energy meter battery undervoltage detection device according to claim 1, characterized in that: It also includes a power supply device, which includes a power supply circuit and a power supply, and the power supply is connected to the processor through the power supply circuit.

8. The electric energy meter battery undervoltage detection device according to claim 1, characterized in that: The power supply device also includes a status light indicating device, which is connected to the switching component and the control processor.

9. The electric energy meter battery undervoltage detection device according to claim 1, characterized in that: The switching component includes a voltage switching switch and a three-phase three-wire-three-phase four-wire switching switch, and the three-phase three-wire-three-phase four-wire switching switch connects the voltage switching switch and the control processor.

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