Fully compatible three-phase intelligent electricity meter full-automatic verification system

A smart energy meter, compatible technology, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve the problems of no verification system, slow verification speed, high labor intensity, etc., and achieve fast verification speed, small verification error, and automation high degree of effect

Inactive Publication Date: 2012-10-10
SHENZHEN CLOU ELECTRONICS
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AI-Extracted Technical Summary

Problems solved by technology

[0002] At present, in the process of electric energy meter verification, there is no automatic verification system, which is mainly composed of multip...
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Abstract

The invention discloses a fully compatible three-phase intelligent electricity meter full-automatic verification system. The full-automatic verification system comprises a detections system platform, wherein the detection system platform is respectively connected with an intelligent storage interface unit, a feeding unit, an appearance detection unit, a dielectric strength test unit, a programmed switching unit, a preset card insertion unit, a function and error detection unit, a load switch/power consumption test unit, a reset/key unit, an automatic sealing unit, an automatic labeling unit and a discharging and separating unit. A conveying unit respectively conveys to-be-detected three-phase intelligent electricity meters to each detection device so as to test each functional parameter, and finally conveys the three-phase intelligent electricity meters to the discharging and separating unit to finish the whole automatic detection flow. The overall verification flow is highly automated, so that the labor intensity of workers is effectively reduced, the verification error is small, and the overall verification speed is fast.

Application Domain

Electrical measurements

Technology Topic

Verification systemAutomotive engineering +5

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  • Fully compatible three-phase intelligent electricity meter full-automatic verification system

Examples

  • Experimental program(1)

Example Embodiment

[0017] The present invention will be further described below in conjunction with the accompanying drawings of the specification.
[0018] Such as figure 1 As shown, a fully compatible three-phase intelligent electric energy meter full-automatic verification system includes a detection system platform, which is respectively connected with the intelligent storage interface unit, the feeding unit, the appearance detection unit, the withstand voltage test unit, and the programming Switch unit, pre-installed card unit, function and error detection unit, load switch/power consumption test unit, reset/key unit, automatic sealing unit, automatic labeling unit and unloading and distributing unit are connected.
[0019] Basic workflow of the system:
[0020] (1) The detection system platform accepts the tasks of the superior system;
[0021] (2) The detection system platform controls the intelligent storage interface unit to deliver the three-phase smart energy meter to be tested to the feeding unit;
[0022] (3) The feeding unit includes the identification unit of the electric meter, and the specification parameters of the electric meter can be obtained by scanning the bar code (one-dimensional code or two-dimensional code) of the electric meter or the radio frequency label of the electric energy meter;
[0023] (4) The loading unit puts the electric energy meter to be inspected on the tooling board of the conveying unit through mechanical devices such as robots or manipulators. The tooling board automatically adjusts the power meter of the three-phase intelligent electric energy meter to be inspected according to the meter specifications obtained by the feeding unit. Location to adapt to various smart meters of different lengths and meter connection signals;
[0024] (4) The conveying unit conveys the tooling board equipped with the three-phase intelligent electric energy meter to be inspected to: appearance inspection unit, withstand voltage test unit, programming switch unit, preset card unit, function and error detection unit, load switch/ Power consumption test unit, reset/key unit, automatic sealing unit, automatic labeling unit, complete the test of various functional indicators.
[0025] (5) Finally, go to the unloading and sorting unit, and sort the qualified electric energy meters and the unqualified electric energy meters to different locations and offline respectively.
[0026] The withstand voltage test unit includes: withstand voltage unit controller, withstand voltage tester, leakage current detection unit, signal connection unit (according to the connection type, it can be divided into direct connection meter and mutual inductor connection meter). Its working process: first check whether there is a tooling board of the three-phase smart electric energy meter to be checked into the withstand voltage test unit, if there is, select the appropriate signal connection unit according to the information of the three-phase smart electric meter to be checked issued by the detection system platform , Connect the test signal probe to the end terminal of the electric energy meter, the withstand voltage unit controller controls the withstand voltage tester to connect the test voltage signal to the three through the test signal probe according to the set test voltage and boost mode. On the phase intelligent electric energy meter, the leakage current detection unit performs abnormal detection during the test. When the leakage current exceeds the standard, the test voltage of the unqualified meter is automatically cut off. The leakage current detection unit also controls the test between the selected test pins. Voltage (execution of the test plan), after the test, the withstand voltage unit controller controls the withstand voltage tester to automatically turn off the test voltage. The tested tooling board is transported to the next verification station by the conveyor unit.
[0027] The appearance inspection unit includes: appearance inspection unit controller, camera, simple power source, signal connection unit (divided into direct connection meter and mutual inductor connection meter according to different connection types) and image processing unit. Its workflow: first check whether there is a tooling board of the three-phase smart energy meter to be tested and enter the appearance inspection unit. If there is, select the appropriate signal connection unit according to the information of the three-phase smart energy meter to be tested from the detection system platform. Connect the test signal probe to the end terminal of the electric energy meter, the appearance inspection unit controller controls the simple power source to output the required test voltage according to the specifications of the three-phase smart electric energy meter, and connect the test voltage signal to the test signal probe On the three-wire smart energy meter, the image processing unit is then notified to collect the operating image of the three-phase smart energy meter through the camera, and the collected images are processed and analyzed. The image processing unit can use the RS485 method and The electric energy meter communicates and calls up different display screens to complete a comprehensive inspection. After the inspection, the image processing unit reports the inspection results to the inspection system platform, and the appearance inspection unit controller controls to turn off the output of the simple power source. The tested tooling board is transported to the next verification station by the conveyor unit.
[0028] According to the compiled switch unit, including: according to the programmed switch unit controller, simple power source, signal connection unit (according to the connection type, it is divided into direct connection meter and mutual inductor connection meter), loose screw Unit, flip unit and press switch unit. The work flow of the programmed switch unit is as follows: First, check whether there is a tooling board for the three-phase smart meter to be checked and enter the programmed switch unit. If there is, select according to the information of the three-phase smart meter to be checked from the detection system platform Connect the test signal probe to the end terminal of the electric energy meter, and control the simple power source according to the switch unit controller to output the required test voltage according to the specifications of the three-phase smart electric energy meter. The test voltage signal is connected to the three-wire smart watt-hour meter through the test signal probe, and the screw unit is controlled by the switch unit controller to loosen the screw on the programming switch cover, and the switch unit controller is controlled to flip the three-phase cover by the switch unit controller. The programming switch cover of the smart electric energy meter, press the switch unit controller to control the switch module, extend the rod-shaped pressing piece, press the programming switch of the three-phase smart energy meter, press the switch unit controller through RS485 and three Phase smart meter communicates to verify the validity of the programming switch. If it fails, repeat the process of pressing the switch and verification 3 times, all of which fail to judge the meter failure, and finally the controller controls to turn off the output of the simple power source. The tested tooling board is transported to the next verification station by the conveyor unit.
[0029] The pre-installed card unit includes: pre-installed card unit controller, analog card unit, simple power source and signal connection unit (according to the connection type, it is divided into direct connection meter and mutual inductor connection meter) . Complete the preset power work of the local charge control meter for the three-phase smart energy meter. The working process of the switch unit is as follows: first check whether there is a tooling board for the three-phase smart meter to be checked and enter the pre-installed card unit, if there is, select according to the information of the three-phase smart meter to be checked from the detection system platform Connect the test signal probe to the end terminal of the electric energy meter, and control the simple power source according to the switch unit controller to output the required test voltage according to the specifications of the three-phase smart electric energy meter. The test voltage signal is connected to the three-wire smart energy meter through the test signal probe, and the preset card unit controller controls the analog card unit to insert the analog power preset card into the card slot of the energy meter. The card unit controller communicates with the three-phase smart electric energy meter through RS485 to verify the validity of the preset electric quantity. If it fails, repeat the process of inserting the card and verifying 3 times, all of which fail to judge the electric meter failure, and finally the controller turns off the simple power source Output. The tested tooling board is transported to the next verification station by the conveyor unit.
[0030] The function and error test list includes: function and error test unit controller, power source, standard meter, error calculation unit, meter protection unit, precision time base source, multiple communication controller, signal connection unit (according to connection type The difference is divided into direct access meter and transformer access meter) and precision current transformer. Complete the error and function detection of the three-phase smart energy meter. The working process of the function and error test unit is as follows: First, check whether there is a tooling board for the three-phase smart energy meter to be tested and enter the function and error test unit. If there is, select according to the information of the three-phase smart energy meter to be tested from the testing system platform A suitable signal connection unit, connect the test signal probe to the end terminal of the electric energy meter, and control the power source according to the switch unit controller to output the required test voltage and current signals according to the specifications of the three-phase smart electric energy meter Among them, the current signal, according to the meter is a direct-access meter (the current output by the power source is isolated by a precision current transformer, and the current signal is added to the current terminal of the meter) and a transformer-connected meter (the power source is output The current is directly added to the current terminal of the meter) through different current loops to the meter, the test voltage and current signals are connected to the three-wire smart meter through the test signal probe, and the function and error test unit controller is based on the detection The control command of the system platform completes the function and error verification of the three-phase intelligent electric energy meter. After the verification is completed, the function and error test unit controller automatically reports the detection result and turns off the power source output. The tested tooling board is transported to the next verification station by the conveyor unit.
[0031] Load switch/power consumption test unit includes: load switch/power consumption test unit controller, analog button unit, simple power source, and signal connection unit (divided into direct connection meter and Connected meter via transformer), power consumption test unit and analog card unit. Complete the test of the load switch and power consumption of the three-phase smart electric energy meter. The working process of the load switch/power consumption test unit is as follows: First, check whether there is a tooling board of the three-phase smart meter to be checked and enter the load switch/power consumption test unit. If there is, the three-phase smart electric energy to be checked issued by the detection system platform Select the appropriate signal connection unit for the information of the meter, connect the test signal probe to the end terminal of the electric energy meter, and control the simple power source according to the programmed switch unit controller according to the specifications and parameters of the three-phase smart electric energy meter. Test voltage and test current, connect the test voltage and current signals to the three-wire smart watt-hour meter through the test signal probe, the load switch/power consumption test unit controller controls the power consumption of the power test unit on the voltage loop and current loop of the watt-hour meter To perform the test, the power consumption test unit reports the test results to the load switch/power consumption test unit controller, and the load switch/power consumption test unit controller judges according to the specification information of the three-phase smart energy meter to be tested issued by the testing system platform: if The electric meter is a remote cost control meter. The load switch of the electric energy meter is first controlled by RS485 to disconnect. The load switch/power consumption test unit controller detects the state of the load switch (state 1), and then the load switch/power consumption test unit controller is controlled by RS485 The load switch of the electric energy meter is closed. After the command is issued, the load switch/power consumption test unit controller detects the state of the load switch (state 2), and then the load switch/power consumption test unit controller presses the patrol of the electric energy meter through the mechanical lever. Display the button, and then the power consumption test unit controller detects the state of the load switch (state 3), and judges whether the electric energy meter is qualified based on the state 1 load switch tripping, state 2 load switch tripping, and state 3 load switch closing. . If it is a local fee control meter, the load switch/power consumption test unit controller controls the analog card unit, and the analog card unit is automatically positioned above the card slot of the electric energy meter, after the analog card unit inserts the relay test card into the electric energy meter , The load switch/power consumption test unit controller detects the state of the load switch (state 4). After the analog card unit inserts the relay test card into the electric energy meter again, the load switch/power consumption test unit controller detects the state of the load switch ( State 5), and judge whether the electric energy meter is qualified based on the state 4 load switch tripping and state 5 load switch closing. The test current is not interrupted during the test of the load switch, and the work of the electric energy meter under load is detected. After the test is completed, the test result will be reported to the test system platform. . The tested tooling board is transported to the next verification station by the conveyor unit.
[0032] The clear/key unit includes: clear/key unit unit controller, analog card plug-in unit, simple power source and signal connection unit (divided into direct connection meter and via transformer according to the connection type Access meter). Complete the work of resetting the charge amount and downloading the key after the detection of the local charge control meter for the three-phase smart electric energy meter. The work flow of the reset/key unit is as follows: first check whether there is a tooling board for the three-phase smart meter to be checked and enter the reset/key unit, if there is, according to the test system platform issued by the three-phase smart meter to be checked Select the appropriate signal connection unit for the information, connect the test signal probe to the end terminal of the electric energy meter, and control the simple power source according to the programmed switch unit controller to output the required test voltage according to the specifications of the three-phase smart electric energy meter , Connect the test voltage signal to the three-wire smart energy meter through the test signal probe, and the reset/key unit controller controls the analog card unit to insert the analog power reset card into the card slot of the energy meter and wait for a while, The reset/key unit controller communicates with the three-phase smart energy meter through RS485 to verify the effectiveness of the power reset. If it fails, repeat the process of inserting the card and verifying 3 times, all of which fail to judge the meter failure, and then clear The parameter setting of the zero-qualified electric energy meter is carried out, and different parameter setting cards are inserted into the electric meter through the set process until all parameter settings are completed. During the parameter setting process, the reset/key unit controller passes RS485 and three The three-phase smart energy meter communicates to ensure that the parameters are successfully set. After all parameter settings are completed, the reset/key unit controller controls the analog card unit to insert the key setting card to convert the key of the three-phase smart meter from public to private. In the private state, the controller finally controls to turn off the output of the simple power source. The tested tooling board is transported to the next verification station by the conveyor unit.
[0033] The automatic sealing unit includes: automatic sealing unit controller, vibrating tray (seal base and upper seal cover respectively), automatic clamshell unit, upper seal base unit, automatic locking screw unit, upper seal upper cover unit and automatic verification unit. Finish the work of installing the programming switch cover for the three-phase smart electric meter and the sealing of the electric meter. The working process of the automatic sealing unit is as follows: First, check whether there is a tooling plate of the three-phase smart electric energy meter to be inspected and enter the automatic sealing unit. If so, the automatic sealing unit controller controls the automatic flip unit to automatically align to the programming switch cover of the electric energy meter. The automatic sealing unit controller controls the automatic clamshell unit to complete the alignment. Use the suction cup to suck up the programming switch cover, and the automatic sealing unit controller controls the upper seal base unit to move the seal base from the discharge port of the seal base vibration plate to the programming switch cover fixing screw , The automatic sealing unit controller controls the suction cup of the automatic flip unit to release the programming switch cover, the automatic sealing unit controller controls the automatic locking screw machine to tighten the screws on the programming switch cover, the automatic sealing unit controller controls the automatic sealing and the upper cover unit automatically Put the seal upper cover from the seal upper cover vibration plate discharge port on the base that has been placed on the programming switch cover and clamp it, and then the automatic sealing unit unit controller controls the verification unit to scan the barcode of the seal upper cover and report it to the inspection system platform . The tested tooling board is transported to the next verification station by the conveyor unit.
[0034] The automatic labeling unit includes: automatic labeling unit controller, labeling unit, printing label unit and label verification unit. Complete the automatic labeling work of the three-phase intelligent electric energy meter that has passed the verification of the verification line. The working process of the automatic labeling unit is as follows: First, check whether there is a tooling plate of the three-phase smart electric energy meter to be inspected and enter the automatic labeling unit. If there is, the automatic labeling unit controller controls the automatic labeling unit to capture the qualified electric energy meter. Automatic labeling when the labeling position is taken, the automatic labeling unit controller controls the printing label unit to automatically print the information on the label, and the information is set through the detection system platform, and the automatic labeling unit controller controls the label verification unit to automatically align the label And the printed label is verified, the information after verification is reported to the testing system platform by the mobile labeling unit controller, and the qualified table is finally determined as the qualified table after labeling and printing. The tested tooling board is transported to the next verification station by the conveyor unit.
[0035] The unloading and sorting unit (the last unit of the electric energy meter on the verification line) includes: unloading and sorting unit controller, non-conforming meter buffer unit, sampling meter buffer unit, packing unit, meter transfer unit and information binding Set unit. After the unloading and sorting unit is completed, the tested electric energy meters are placed in different positions according to the qualified, unqualified, and random inspections: non-conforming meter buffer unit, random inspection meter buffer unit, and packing unit (the packing unit can be checked according to The setting of the system platform is divided into qualified form packing and unqualified form packing). The working process is as follows: First, check whether there is a tooling plate of the three-phase smart energy meter to be checked into the blanking and sorting unit. If so, the blanking and sorting unit will be based on the packing task issued by the detection system platform (divided into qualified meter packing , Unqualified meter packing): Qualified meter packing task: the meter transfer unit transfers the qualified meters on the tooling board to the meter turnover box and puts them in order. At this time, the unqualified meters on the tooling board pass the meter transfer unit Cache unit of unqualified meter in transfer path; unqualified meter packing task: The meter transfer unit transfers the electric meter of the unqualified meter cache unit to the electric meter turnover box. If the verification system platform issues the task of sampling inspection table: electric meter transfer The unit transfers the meter on the tooling board to the meter sampling area, regardless of whether the meter is qualified or not. During all tasks, the full container of the meter turnover box is automatically moved from the packing position, and an empty box is automatically moved to the packing position. After removing the electric meter, the empty tooling plate is moved to the conveying unit. The feeding unit waits for feeding, and the system completes a cycle.

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