Automatic wire connecting and disconnecting device and method for electric energy meter
By designing an automatic wiring and disconnection device, using radio frequency identification and multi-layer structure to achieve automatic wiring and disconnection of multiple power meter models, the problems of poor universality and low efficiency of traditional systems are solved, and the simultaneous verification of multiple power meters is realized. and efficient checks.
Patent Information
- Application Number
- CN202411083787.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2024-12-20
AI Technical Summary
Due to the different types of power meters, traditional power meter verification systems require different verification lines, which leads to poor versatility, high cost, low efficiency, and the inability to detect more than two types of power meters at the same time.
An automatic wiring disconnection device for the power meter is designed, including a frame, guide rail, lifting mechanism, pallet, multiple wiring heads, identification mechanism and docking mechanism. The power meter model is identified through radio frequency identification tags and distance sensors, and through multiple layers The structure and drive mechanism realize automatic wiring and disconnection of various types of power meters to ensure that the wiring heads are aligned with the power meter.
It improves the versatility and efficiency of the power meter verification system, and can verify multiple types of power meters at the same time, reducing equipment expenses and verification costs, and avoiding damage to the wiring pins.
Smart Images
Figure CN119165434A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of power grid detection, and in particular relates to an electric energy meter verification system. Background Art
[0002] In the scope of the power system, the municipal electric energy metering and calibration institutions have realized the management mode of centralized calibration of electric energy meters, which has increased the calibration volume of electric energy meters. At present, the traditional electric energy meter standard device has adopted the intelligent program-controlled calibration mode to realize the automation of project calibration, but the traditional electric energy meter calibration system is aimed at different types of electric energy meters. Due to the different shapes, sizes and wiring sockets of electric energy meters, different calibration lines need to be newly built, resulting in poor versatility of the calibration system, high calibration cost and low calibration efficiency.
[0003] In this case, the automatic wiring device in the prior art is equipped with a meter-pushing finger pushed by a cylinder to crimp the electric energy meter. Its disadvantages are that the device cannot detect the distance between the wiring head and the electric energy meter, which may easily cause the electric energy meter to be placed incorrectly or the machine to fail, causing the wiring head and the electric energy meter socket to be misaligned, resulting in damage to the wiring pins. In addition, it can only detect two types of electric energy meters at the same time, and cannot detect more than two types of electric energy meters at the same time. It has poor versatility and is not compatible with connecting and disconnecting various types of meters. Summary of the invention
[0004] In order to solve the deficiencies in the prior art, the present invention provides an automatic connection and disconnection device for electric energy meters. The device solves the problem of difficulty in calibrating different electric energy meters, can calibrate the model of electric energy meters according to needs, set the number of layers of the device, perform calibration of more than two types of electric energy meters, and improve the versatility and efficiency of electric energy meter calibration.
[0005] In order to achieve the above-mentioned object, the present invention provides an automatic connection and disconnection device for electric energy meters, the device comprising: a frame, a guide rail, a lifting mechanism, a tray, a plurality of connection heads, an identification mechanism and a docking mechanism, the guide rail is installed above the frame, the guide rail is connected to the tray, the lifting mechanism is connected to the tray, the lifting mechanism is used to drive the tray to carry the electric energy meter to be tested to move on the guide rail and lift the tray to transport the electric energy meter to the calibration position; a plurality of connection heads are arranged at the calibration position and connected to the docking mechanism, matching different types of electric energy meters for detection;
[0006] The identification mechanism is used to identify the model of the electric energy meter to be tested and transmit it to the designated calibration position. The docking mechanism drives the connection head to dock with the electric energy meter according to the identified electric energy meter model and separates the connection head from the electric energy meter after calibration.
[0007] Preferably, the automatic connection and disconnection device for the electric energy meter comprises a double-layer structure, which comprises: a support column and a support plate, wherein the support column is arranged on both sides of the frame, a support plate is arranged on the upper part of the support column, and a docking mechanism is arranged on the support plate.
[0008] Preferably, the docking mechanism is arranged on both sides of the guide rail, including: a driving mechanism, a distance sensor and a PLC controller, wherein the distance sensor is arranged on one side of the wiring head, the input end of the PLC controller is connected to the distance sensor, and the output end of the PLC controller is respectively connected to the driving mechanism and the lifting mechanism electrical signals, and the PLC controller is used to control the distance between the wiring head and the electric energy meter to avoid damage to the wiring head.
[0009] Preferably, the driving mechanism is connected to the terminal head, and the driving mechanism includes: a base plate, a side plate, a first cylinder, a push rod, a push plate, a slide rail, a slider and a support plate. The side plates are arranged on both sides of the base plate, and the slide rails are installed on the top of the side plates, the slider is installed on the upper part of the slide rails, the support plate is installed on the slider, and the terminal head is fixedly installed on the support plate. At the same time, the first cylinder is installed on the base plate, one end of the first cylinder is connected to the push rod, the push rod is connected to the push plate, and the push plate is connected to the support plate. At the same time, the bottom of the top plate is connected to the connecting rod frame, the connecting rod frame is connected to the guide rod and the second cylinder, and the second cylinder is used to lift the pallet.
[0010] Preferably, the lifting mechanism comprises: a top plate, a second cylinder, a connecting rod frame and a guide rod, wherein the top of the top plate is connected to the socket and a driving motor is installed to drive the tray to move along the guide rail.
[0011] Preferably, the identification mechanism includes: a radio frequency identification tag, an ultra-high frequency identification structure and a high frequency identification structure. The radio frequency identification tag is set on the pallet, and the radio frequency identification tag can transmit and read ultra-high frequency and high frequency data through the ultra-high frequency identification structure and the high frequency identification structure; the ultra-high frequency identification structure is set on the assembly line, the ultra-high frequency identification structure includes: an ultra-high frequency reader and a computer, the ultra-high frequency reader is connected to the computer, the ultra-high frequency reader has an external antenna, and the high frequency identification structure includes: a near-field communication device, and the near-field communication device is held by the staff.
[0012] Preferably, an ultra-HF device, an HF device and a driving device are arranged inside the RFID tag, and the driving device comprises: an MCU and a sensor, the sensor is connected to the MCU, the ultra-HF device and the HF device are both connected to the MCU, the ultra-HF device and the HF device are both capable of collecting RF signals and converting AC RF signals into DC voltages through a built-in AC-DC conversion circuit to power the MCU and the sensor; a distinguishing structure is arranged between the ultra-HF device and the HF device and the MCU, the distinguishing structure is used to distinguish the source of the voltage, the distinguishing structure connects the power terminals of the ultra-HF device and the HF device to the power interface of the MCU through a hot carrier diode, the ultra-HF device is connected to the input interface PA.1 of the MCU, and the HF device is connected to the input interface PA.2 of the MCU.
[0013] Preferably, the transmitting end of the ultra-HF device is connected to a voltage converter, which adjusts the DC voltage sent by the ultra-HF device to a power supply voltage to power the MCU and the sensor. At the same time, the voltage converter is connected to a supercapacitor, and the voltage converter can adjust the voltage sent by the ultra-HF device to an energy storage voltage to charge the supercapacitor. The voltage converter is connected to the output voltage stabilization device circuit; the ultra-HF device has a built-in reset circuit, a circuit switch is provided in the reset circuit, and the reset circuit is connected to the voltage converter for voltage monitoring and control.
[0014] Preferably, the MCU is provided with two interfaces, a serial peripheral interface and an integrated circuit interface, both interfaces are connected to the sensor, the MCU runs the sensor via the integrated circuit interface, the sensor detects the electric energy meter and identifies the voltage source, if the voltage comes from the voltage converter, the sensor information is transmitted to the ultra-HF device via the serial peripheral interface, if the voltage comes from the HF device, the sensor information is transmitted to the HF device via the integrated circuit interface, the ultra-HF device and the ultra-high frequency reader of the ultra-high frequency identification structure transmit information, and the HF device and the near-field communication device of the high frequency identification structure transmit information.
[0015] Preferably, the present invention provides a method for using an automatic connection and disconnection device for an electric energy meter, comprising the following steps:
[0016] Step 1: The electric energy meter to be tested is fixed on the tray, and the sensor on the radio frequency identification tag of the identification mechanism detects the electric energy meter to obtain the status and information of the electric energy meter;
[0017] Step 2: When the UHF identification structure is adopted, the driving motor on the lifting mechanism drives the tray to automatically transfer to the UHF identification structure position, and the UHF reader transmits information to the ultra-HF device on the RFID tag, determines the model and status of the electric energy meter and displays it on the computer;
[0018] Step 3: When the high-frequency identification structure is used, the staff turns on the contactless communication function of the near-field communication device and approaches the RFID tag, which will determine the meter model and sensor information and display them on the near-field communication device;
[0019] Step 4: After identification, the tray automatically moves to the matching terminal position, and the lifting mechanism starts to lift the tray to the verification position;
[0020] Step 5: Use the distance sensor to detect the distance position of the wiring head of the electric energy meter socket to determine whether the electric energy meter is in place. After it is in place, the distance sensor transmits a signal to the PLC controller, and the PLC controller controls the lifting mechanism to stop and start the driving mechanism. The driving mechanism drives the wiring head to move and dock with the electric energy meter for verification;
[0021] Step 6: After the verification is completed, the device automatically removes the wires and resets.
[0022] The beneficial effect of the present invention is that, compared with the prior art, the present invention arranges driving mechanisms and corresponding wiring heads on both sides of the calibration assembly line, and arranges the driving mechanisms and corresponding wiring heads in multiple layers. At the same time, the present invention pushes the tray and the electric energy meter on the top plate to move in the vertical direction through the guide rod and the connecting rod frame, and the lifting mechanism realizes the vertical displacement of the electric energy meter, which can drive the electric energy meter to dock with the wiring heads of multiple layers for calibration, can be compatible with the calibration of electric energy meters of more models, and realizes the simultaneous calibration of multiple models of electric energy meters, so that the versatility is stronger, the calibration efficiency is higher, and the calibration time is saved;
[0023] The tray of the present invention is provided with a radio frequency identification tag. When the electric energy meter is provided on the tray, the sensor on the radio frequency identification tag will automatically detect the electric energy meter and obtain the state information of the electric energy meter. Meanwhile, the radio frequency identification tag can transmit and read both high frequency and ultra-high frequency data. The ultra-high frequency identification structure transmits information to the ultra-HF device on the radio frequency identification tag, and the high frequency identification structure transmits information to the HF device on the radio frequency identification tag. The high frequency identification structure is mostly held by a staff, so that the staff can read data more conveniently and use more conveniently. The radio frequency identification tag can meet more situations and has stronger versatility. The transmitting end of the ultra-HF device is connected to the voltage converter, so that the radio frequency identification tag can have a wider reading range. Meanwhile, the built-in reset circuit of the ultra-HF device has a circuit switch in the reset circuit, and the reset circuit is connected to the voltage converter for voltage monitoring and control. The voltage emitted by the ultra-HF device can reach the operating conditions of the MCU and the sensor, and can also reach the operating conditions in the ultra-high frequency radio frequency chip, so that the voltage of the AC-DC conversion circuit in the ultra-high frequency radio frequency chip is reduced due to large energy loss when the switch of the reset circuit is continuously in the closed state. The reset circuit can also monitor and control the voltage in real time.
[0024] After the model is determined, the tray can be rotated 180 degrees or driven by the lifting mechanism to move to the vicinity of the terminal head of the matching model. The distance sensor confirms the distance position between the power meter socket and the terminal head. The start and stop of the driving mechanism and the lifting mechanism are controlled by the PLC controller. The distance sensor can avoid the damage of the terminal pin due to the misalignment of the terminal head and the power meter socket due to incorrect placement of the power meter or machine failure. After the power meter is in place, the first cylinder starts to drive the terminal head to move, thereby realizing the docking of the terminal head and the power meter and calibrating the power meter.
[0025] The device can realize the simultaneous calibration of multiple types of electric energy meters on one production line, which can save equipment expenses, improve the versatility and calibration efficiency of the electric energy meter calibration system, and reduce the calibration cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of a single layer of the automatic connection and disconnection device for an electric energy meter in the present invention;
[0027] Figure 2 It is a top view of the automatic connection and disconnection device of the electric energy meter in the present invention;
[0028] Figure 3 It is a schematic diagram of the double-layer structure of the automatic connection and disconnection device of the electric energy meter in the present invention;
[0029] Figure 4 It is a schematic diagram of the structure of the tray and the electric energy meter in the present invention;
[0030] Figure 5 It is a structural schematic diagram of the tray and the electric energy meter in the present invention from another perspective;
[0031] Figure 6 It is a structural schematic diagram of the driving mechanism in the present invention;
[0032] Figure 7 The present invention discloses a circuit diagram of a radio frequency identification tag.
[0033] In the figure: 1 frame, 2 guide rails, 3 driving mechanism, 3.1 bottom plate, 3.2 side plate, 3.3 first cylinder, 3.4 push rod, 3.5 push plate, 3.6 slide rail, 3.7 slider, 3.8 support plate, 4 tray, 4.1 meter slot, 5 first terminal, 5.1 shell, 5.2 terminal pin, 5.3 distance sensor, 6 second terminal, 7 first electric energy meter, 8 second electric energy meter, 9 third terminal, 10 fourth terminal, 11 lifting mechanism, 11.1 top plate, 11.2 second cylinder, 11.3 connecting rod frame, 11.4 guide rod, 12 socket, 13 support column, 14 support plate. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.
[0035] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the embodiment of the invention provides an automatic connection and disconnection device for electric energy meters. In a preferred but non-limiting embodiment, the automatic connection and disconnection device for electric energy meters is a single-layer structure, which includes: a frame 1, a guide rail 2, a lifting mechanism 11, a tray 4, a plurality of connection heads, an identification mechanism and a docking mechanism. The number of the guide rails 2 is two and they are installed above the frame 1. A tray 4 is arranged between the two guide rails 2. The top of the lifting mechanism 11 is connected to the bottom of the tray 4. The lifting mechanism 11 is used to drive the tray 4 to carry the electric energy meter to be tested to move on the guide rail 2 and lift the tray 4 to transport the electric energy meter to the calibration position; a plurality of connection heads are arranged at the calibration position, matching different types of electric energy meters for detection, and the connection heads are arranged on both sides of the guide rail 2. The identification mechanism is used to identify the model of the electric energy meter to be tested, and the docking mechanism is arranged on both sides of the guide rail 2. According to the identified electric energy meter model, the connection head is driven to dock with the electric energy meter and the connection head is separated from the electric energy meter after calibration.
[0036] The movement of the tray 4 on the guide rail 2 is the same as that of the existing assembly line, that is, it moves in a straight line driven by the lifting mechanism 11. Two electric meter slots 4.1 are arranged on the upper part of the tray 4. Two electric energy meters can be arranged in the electric meter slots 4.1. A socket 12 is arranged at the bottom of the tray 4. The socket 12 is connected to the top of the lifting mechanism 11.
[0037] The identification mechanism includes: a radio frequency identification tag, an ultra-high frequency identification structure and a high frequency identification structure. The radio frequency identification tag is set on the tray 4. The common frequencies of transmitting data of radio frequency identification tags are: low frequency, high frequency and ultra-high frequency. Generally, the higher the frequency, the larger the reading range and the faster the transmission rate. The radio frequency identification tag of the present invention can transmit and read ultra-high frequency and high frequency data through the ultra-high frequency identification structure and the high frequency identification structure, realizing two types of radio frequency identification reading, making it more convenient for staff to read data and more convenient to use.
[0038] The UHF identification structure is set on the assembly line. The UHF identification structure includes: an UHF reader and a computer. The UHF reader and the computer are connected. The UHF reader has an external antenna. The antenna is used to receive the UHF signal emitted by the radio frequency identification tag. The high frequency identification structure includes: a near field communication device, such as a mobile phone with a contactless communication function, etc. The near field communication device is held by the staff.
[0039] An ultra-HF device, an HF device and a driving device are arranged inside the RFID tag. The driving device includes: an MCU (single-chip microcomputer) and a sensor. The sensor is connected to the MCU. The sensor may be a temperature sensor, a humidity sensor, a distance sensor, etc., which are used to monitor the status of the electric energy meter on the monitoring tray 4 and to monitor and record it. The ultra-HF device and the HF device are both connected to the MCU. The ultra-HF device uses the ultra-high frequency RF chip of Powercast P2110, and the HF device uses the high frequency RF chip of AMSAS39513. Both Powercast P2110 and AMS AS39513 can collect RF signals and convert AC RF signals into DC voltages through built-in AC-DC conversion circuits to power the MCU and the sensor. The built-in AC-DC conversion circuits of the ultra-HF device and the HF device reduce the size of the RFID tag and also provide stable power for the MCU and the sensor.
[0040] A distinguishing structure is provided between the ultra-HF device and the HF device and the MCU to distinguish the source of the voltage received by the RF conversion. The distinguishing structure connects the power terminals of the ultra-HF device and the HF device to the power interface of the MCU through a hot carrier diode. At the same time, the ultra-HF device is connected to the input interface PA.1 of the MCU, and the HF device is connected to the input interface PA.2 of the MCU. The DC voltage source is distinguished by the unidirectional current flow of the hot carrier diode and the change of the potential on the input interfaces PA.1 and PA.2 of the MCU, and then the voltage is confirmed to come from the ultra-HF device or the HF device. The MCU and the sensor work at the corresponding frequency according to the DC voltage source. The hot carrier diode of the distinguishing structure can ensure that the ultra-HF device or the HF device that is not powered will not be back-injected with current, thereby improving the durability of the RFID tag.
[0041] At the same time, the output end of the ultra-HF device is connected to the voltage converter, and the DC voltage sent by the ultra-HF device is adjusted by the voltage converter. The voltage converter can adjust the DC voltage sent by the ultra-HF device to a power supply voltage to power the MCU and the sensor. At the same time, the voltage converter is connected to the supercapacitor circuit, and the voltage converter can also adjust the voltage sent by the ultra-HF device to an energy storage voltage to charge the supercapacitor. The voltage converter is also connected to the output voltage stabilization device circuit;
[0042] A specific embodiment is that when the ultra-HF device sends out a voltage of 0.3V or a volt value exceeding 0.3V, when the current reaches the voltage converter, the voltage converter operates to charge the supercapacitor; until the voltage value on both sides of the supercapacitor reaches 2.5V, the voltage converter will automatically release current to power the MCU, until the voltage value drops to 1.7V, the voltage converter will not release current and charge the supercapacitor again, and this is repeated. The output voltage stabilization device can ensure that the voltage value sent from the voltage converter is between 1.7V and 2.5V.
[0043] The sending end of the Powercast P2110 of the ultra-HF device is connected to the voltage converter. The Powercast P2110 has a built-in reset circuit. The reset circuit is provided with a circuit switch. The reset circuit is connected to the voltage converter for voltage monitoring and control. The voltage value of the circuit switch on the reset circuit is preset to be opened and closed. When the voltage value through the reset circuit reaches the preset value, the circuit switch automatically opens or closes, thereby monitoring and controlling the voltage value of the voltage sent by the Powercast P2110. The circuit switch on the reset circuit is repeatedly opened and closed, thereby releasing the excess voltage (more than 1.5V) of the AC-DC conversion circuit of the ultra-high frequency RF chip. The released excess voltage is regulated by the voltage converter and stored in the supercapacitor to power the MCU and the sensor; the voltage can reach the operating conditions of the MCU and the sensor, and can also reach the operating conditions inside the ultra-high frequency RF chip, avoiding the large energy loss when the reset circuit switch is continuously closed, causing the voltage of the AC-DC conversion circuit inside the ultra-high frequency RF chip to drop. The reset circuit can also monitor and control the voltage in real time.
[0044] The MCU is provided with two interfaces, a serial peripheral interface and an integrated circuit interface, both of which are connected to the sensor. In a specific embodiment, the MCU runs the sensor via the integrated circuit interface, the sensor detects the electric energy meter on the tray 4 and identifies the voltage source via the circuit. If the voltage comes from the voltage converter and the output voltage stabilization device, the information of the sensor is transmitted to the ultra-HF device via the serial peripheral interface. If the voltage comes from the HF device, the information of the sensor is transmitted to the HF device via the integrated circuit interface. Then the ultra-HF device automatically transmits information to the ultra-high frequency reader of the ultra-high frequency identification structure, and the HF device automatically transmits information to the near-field communication device of the high-frequency identification structure, so that the identification mechanism can transmit information to both the computer and the near-field communication device.
[0045] A specific embodiment is to place an electric energy meter on a tray 4, and the tray 4 is provided with an RFID tag. The sensor on the RFID tag detects the electric energy meter by itself. When the RFID tag is in an UHF state, the RFID tag transmits a RF signal to the UHF reader on the assembly line. The UHF reader collects the UHF RF signal through an antenna for reading. The UHF reader obtains the electric energy meter and sensor information and displays it on a computer. The UHF RF chip outputs a stable voltage through a voltage converter, so that the reading range of the UHF reader is larger. When the RFID tag is in a high frequency state, the high frequency signal of the RFID tag is collected through a near field communication device, such as a mobile phone with a contactless communication function. The contactless communication function of the mobile phone is turned on and the mobile phone is close to the RFID tag on the tray 4. The electric energy meter and sensor information will be displayed on the mobile phone, and the staff can obtain information more conveniently, so that the device can transmit information under both RF signals. Figure 3 The lifting mechanism 11 comprises: a top plate 11.1, a second cylinder 11.2, a connecting rod frame 11.3 and a guide rod 11.4. The top end of the connecting rod frame 11.3 is fixedly connected to the bottom of the top plate 11.1. The top plate 11.1 is equipped with a driving motor to drive the tray 4 to move along the guide rail 2. The output end of the driving motor is snap-connected with the socket 12 at the bottom of the tray 4. At the same time, the bottom end of the connecting rod frame 11.3 is movably connected to the guide rod 11.4 arranged on the frame 1. The second cylinder 11.2 is arranged between the two guide rods 11.4, and its top end is connected to the connecting rod frame 11.3, which is used to push the tray 4 and the electric energy meter on the top plate 11.1 to move in the vertical direction.
[0046] like Figure 6 As shown, the docking mechanism includes: a driving mechanism 3, a distance sensor 5.3 and a PLC controller, wherein a distance sensor 5.3 is provided on a side of the terminal head close to the electric energy meter, for detecting the distance position of the distance sensor 5.3 from the electric energy meter plug, the input end of the PLC controller is connected to the distance sensor 5.3, and the output end of the PLC controller is respectively connected to the driving mechanism 3 and the lifting mechanism 11 for electrical signals, the electric energy meter presets a distance in advance, when the distance position between the electric energy meter and the distance sensor 5.3 is within the preset distance, the distance sensor 5.3 will transmit a signal to the PLC controller, and the PLC controller will control the lifting mechanism 11 to stop and start the driving mechanism 3, so as to avoid the damage of the terminal pin 5.2 caused by the misalignment of the terminal head and the electric energy meter socket due to the wrong placement of the electric energy meter or the failure of the machine.
[0047] The driving mechanism 3 includes: a bottom plate 3.1, a side plate 3.2, a first cylinder 3.3, a push rod 3.4, a push plate 3.5, a slide rail 3.6, a slider 3.7 and a support plate 3.8. The two side plates 3.2 are arranged side by side on the bottom plate 3.1 and the slide rail 3.6 is installed on the top of the bottom plate 3.1. The slider 3.7 is installed on the upper part of the slide rail 3.6, and the support plate 3.8 is installed on the slider 3.7. The support plate 3.8 is fixedly installed with a terminal. The slider 3.7 can drive the terminal on the support plate 3.8 to move along the slide rail 3.6 and then dock with the electric energy meter. At the same time, the first cylinder 3.3 is fixedly installed on the bottom plate 3.1 between the two side plates 3.2. The input end of the first cylinder 3.3 is connected to the PLC controller electrical signal, and the output end of the first cylinder 3.3 is connected to the push rod 3.4. The end of the push rod 3.4 is detachably connected to the push plate 3.5 arranged at the bottom end of the support plate 3.8, and the terminal is fixedly installed on the support plate 3.8.
[0048] A specific implementation example is that when the distance sensor 5.3 sends a signal to the PLC controller, the PLC controller controls the driving motor of the lifting mechanism to stop and starts the first cylinder 3.3 on the driving mechanism 3, the first cylinder 3.3 drives the push rod 3.4 to move, and the push rod 3.4 drives the support plate 3.8 and the terminal on the support plate 3.8 to move toward the electric energy meter to complete the docking verification.
[0049] The terminal heads can be provided in plurality and installed on both sides of the guide rail 2. A single layer can be provided with a first terminal head 5 to connect with a first electric energy meter 7, and a second terminal head 6 to connect with a second electric energy meter 8, for calibration of different electric energy meters. The terminal heads include: a shell 5.1 and a terminal pin 5.2; wherein the shell 5.1 is provided on the upper part of the support plate 3.8 of the driving mechanism 3, and a terminal pin 5.2 is provided inside the shell 5.1, and the terminal pin 5.2 is used to connect with the socket on the electric energy meter to calibrate the electric energy meter.
[0050] like Figure 3 As shown, in a preferred but non-limiting embodiment, the automatic connection and disconnection device of the electric energy meter is a double-layer structure, and can also be set to multiple layers, not limited to two layers. The two-layer structure also includes: a support column 13 and a support plate 14, wherein the support column 13 is arranged on both sides of the frame 1, and a support plate 14 is arranged on the upper part of the support column 13, on which a driving mechanism 3 and a terminal block are arranged, and multiple support plates 14 can be arranged; the first layer is respectively provided with a first terminal block 5 and a second terminal block 6 on both sides of the guide rail 2, and the second layer is respectively provided with a third terminal block 9 and a fourth terminal block 10 on both sides of the guide rail, so the double-layer structure assembly line can meet the calibration requirements of four specifications of electric energy meters.
[0051] Furthermore, the present invention provides a method for automatically connecting and disconnecting an electric energy meter, comprising the following steps:
[0052] Step 1: The electric energy meter to be tested is fixed on the tray 4, and the sensor on the radio frequency identification tag of the identification mechanism detects the electric energy meter to obtain the state and information of the electric energy meter;
[0053] Step 2: When the UHF identification structure is adopted, the driving motor on the lifting mechanism 11 drives the tray 4 to automatically transfer to the UHF identification structure position, and the UHF reader transmits information to the ultra-HF device on the RFID tag, determines the model and status of the electric energy meter and displays it on the computer;
[0054] Step 3: When the high-frequency identification structure is used, the staff turns on the contactless communication function of the near-field communication device and approaches the RFID tag, which will determine the meter model and sensor information and display them on the near-field communication device;
[0055] Step 4: After identification, the tray 4 automatically moves to the matching terminal position, and the lifting mechanism 11 starts to lift the tray 4 to the verification position;
[0056] Step 5: The distance sensor 5.3 detects the distance position of the connection head of the electric energy meter socket to determine whether the electric energy meter is in place. After the electric energy meter is in place, the distance sensor 5.3 transmits a signal to the PLC controller, and the PLC controller controls the lifting mechanism 11 to stop and starts the driving mechanism 3. The driving mechanism 3 drives the connection head to move and dock with the electric energy meter for verification;
[0057] Step 6: After the verification is completed, the device automatically removes the wires and resets.
[0058] The beneficial effect of the present invention is that, compared with the prior art, the present invention arranges driving mechanisms and corresponding wiring heads on both sides of the calibration assembly line, and arranges the driving mechanisms and corresponding wiring heads in multiple layers. At the same time, the present invention pushes the tray and the electric energy meter on the top plate to move in the vertical direction through the guide rod and the connecting rod frame, and the lifting mechanism realizes the vertical displacement of the electric energy meter, which can drive the electric energy meter to dock with the wiring heads of multiple layers for calibration, can be compatible with the calibration of electric energy meters of more models, and realizes the simultaneous calibration of multiple models of electric energy meters, so that the versatility is stronger, the calibration efficiency is higher, and the calibration time is saved;
[0059] The tray of the present invention is provided with a radio frequency identification tag. When the electric energy meter is provided on the tray, the sensor on the radio frequency identification tag will automatically detect the electric energy meter and obtain the state information of the electric energy meter. Meanwhile, the radio frequency identification tag can transmit and read both high frequency and ultra-high frequency data. The ultra-high frequency identification structure transmits information to the ultra-HF device on the radio frequency identification tag, and the high frequency identification structure transmits information to the HF device on the radio frequency identification tag. The high frequency identification structure is mostly held by a staff, so that the staff can read data more conveniently and use more conveniently. The radio frequency identification tag can meet more situations and has stronger versatility. The transmitting end of the ultra-HF device is connected to the voltage converter, so that the radio frequency identification tag can have a wider reading range. Meanwhile, the built-in reset circuit of the ultra-HF device has a circuit switch in the reset circuit, and the reset circuit is connected to the voltage converter for voltage monitoring and control. The voltage emitted by the ultra-HF device can reach the operating conditions of the MCU and the sensor, and can also reach the operating conditions in the ultra-high frequency radio frequency chip, so that the voltage of the AC-DC conversion circuit in the ultra-high frequency radio frequency chip is reduced due to large energy loss when the switch of the reset circuit is continuously in the closed state. The reset circuit can also monitor and control the voltage in real time.
[0060] After the model is determined, the tray can be rotated 180 degrees or driven by the lifting mechanism to move to the vicinity of the terminal head of the matching model, and the distance sensor can be used to confirm the distance between the power meter socket and the terminal head to avoid misalignment between the terminal head and the power meter socket due to incorrect placement of the power meter or machine failure, resulting in damage to the terminal pin 5.2. After the power meter is in place, the first cylinder is started to drive the terminal head to move, thereby achieving the connection between the terminal head and the power meter and conducting the calibration of the power meter.
[0061] The device can realize the simultaneous calibration of multiple types of electric energy meters on one production line, which can save equipment expenses, improve the versatility and calibration efficiency of the electric energy meter calibration system, and reduce the calibration cost.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. An automatic connection and disconnection device for an electric energy meter, comprising: A frame (1), a guide rail (2), a lifting mechanism (11), a tray (4), a plurality of wiring heads, an identification mechanism and a docking mechanism, characterized in that: The guide rail (2) is installed above the frame (1), the guide rail (2) is connected to the tray (4), the lifting mechanism (11) is connected to the tray (4), and the lifting mechanism (11) is used to drive the tray (4) to carry the electric energy meter to be tested to move on the guide rail (2) and lift the tray (4) to transport the electric energy meter to the calibration position; multiple wiring heads are arranged at the calibration position and connected to the docking mechanism to match different models of electric energy meters for testing; The identification mechanism is used to identify the model and information of the electric energy meter to be tested and transmit them to the designated calibration position. The docking mechanism drives the wiring head to dock with the electric energy meter according to the identified electric energy meter model and separates the wiring head from the electric energy meter after calibration.
2. The automatic connection and disconnection device for an electric energy meter as claimed in claim 1, characterized in that: The automatic connection and disconnection device for an electric energy meter comprises a double-layer structure, which comprises: a support column (13) and a support plate (14), wherein the support column (13) is arranged on both sides of a frame (1), the support plate (14) is arranged on the upper part of the support column (13), and a docking mechanism is arranged on the support plate (14).
3. The automatic connection and disconnection device for electric energy meters according to claim 1, characterized in that: The docking mechanism is arranged on both sides of the guide rail (2), and comprises: a driving mechanism (3), a distance sensor (5.3) and a PLC controller, wherein the distance sensor (5.3) is arranged on one side of the wiring head, the input end of the PLC controller is connected to the distance sensor (5.3), and the output end of the PLC controller is respectively connected to the driving mechanism (3) and the lifting mechanism (11) by electrical signals, and the PLC controller is used to control the distance between the wiring head and the electric energy meter to avoid damage to the wiring head.
4. The automatic connection and disconnection device for an electric energy meter as claimed in claim 4, characterized in that: The driving mechanism (3) is connected to the terminal head, and comprises: a bottom plate (3.1), a side plate (3.2), a first cylinder (3.3), a push rod (3.4), a push plate (3.5), a slide rail (3.6), a slider (3.7) and a support plate (3.8). The side plates (3.2) are arranged on both sides of the bottom plate (3.1), and the slide rails (3.6) are installed on the top of the side plates (3.2). The sliders (3.7) are installed on the upper part of the slide rails (3.6), and the support plate (3.8) is installed on the slider (3.7). The terminal head is fixedly mounted. The first cylinder (3.3) is mounted on the support plate (3.8), and the first cylinder (3.3) is mounted on the bottom plate (3.1). One end of the first cylinder (3.3) is connected to the push rod (3.4), the push rod (3.4) is connected to the push plate (3.5), the push plate (3.5) is connected to the support plate (3.8), and the bottom of the top plate (11.1) is connected to the connecting rod frame (11.3), the connecting rod frame (11.3) is connected to the guide rod (11.4) and the second cylinder (11.2), and the second cylinder (11.2) is used to lift the tray (4).
5. The automatic connection and disconnection device for electric energy meters according to claim 1, characterized in that: The lifting mechanism (11) comprises: a top plate (11.1), a second cylinder (11.2), a connecting rod frame (11.3) and a guide rod (11.4), wherein the top of the top plate (11.1) is connected to the socket (12) and is equipped with a driving motor to drive the tray (4) to move along the guide rail.
6. The automatic connection and disconnection device for electric energy meters as claimed in claim 1, characterized in that: The identification mechanism comprises: a radio frequency identification tag, an ultra-high frequency identification structure and a high frequency identification structure. The radio frequency identification tag is arranged on a tray (4). The radio frequency identification tag can transmit and read ultra-high frequency and high frequency data through the ultra-high frequency identification structure and the high frequency identification structure. The ultra-high frequency identification structure is arranged on an assembly line. The ultra-high frequency identification structure comprises: an ultra-high frequency reader and a computer. The ultra-high frequency reader and the computer are connected. The ultra-high frequency reader has an external antenna. The high frequency identification structure comprises: a near field communication device. The near field communication device is held by a staff member.
7. An automatic connection and disconnection device for an electric energy meter as claimed in claim 6, characterized in that: An ultra-HF device, an HF device and a driving device are arranged inside the radio frequency identification tag, and the driving device comprises: an MCU and a sensor, wherein the sensor is connected to the MCU, and the ultra-HF device and the HF device are both connected to the MCU, and the ultra-HF device and the HF device are both capable of collecting radio frequency signals and converting AC radio frequency signals into DC voltages through built-in AC-DC conversion circuits to power the MCU and the sensor; a distinguishing structure is arranged between the ultra-HF device and the HF device and the MCU, and the distinguishing structure is used to distinguish the source of the voltage, and the distinguishing structure connects the power terminals of the ultra-HF device and the HF device to the power interface of the MCU through a hot carrier diode, and the ultra-HF device is connected to the input interface PA.1 of the MCU, and the HF device is connected to the input interface PA.2 of the MCU.
8. An automatic connection and disconnection device for an electric energy meter as claimed in claim 7, characterized in that: The transmitting end of the ultra-HF device is connected to a voltage converter, which adjusts the DC voltage sent by the ultra-HF device into a power supply voltage to power the MCU and the sensor. At the same time, the voltage converter is connected to a supercapacitor, and the voltage converter can adjust the voltage sent by the ultra-HF device into an energy storage voltage to charge the supercapacitor. The voltage converter is connected to the output voltage stabilization device circuit; the ultra-HF device has a built-in reset circuit, and a circuit switch is provided in the reset circuit. The reset circuit is connected to the voltage converter for voltage monitoring and control.
9. The automatic connection and disconnection device for electric energy meters as claimed in claim 7, characterized in that: The MCU is provided with two interfaces, a serial peripheral interface and an integrated circuit interface, both of which are connected to the sensor. The MCU runs the sensor via the integrated circuit interface, and the sensor detects the electric energy meter and identifies the voltage source. If the voltage comes from the voltage converter, the information of the sensor is transmitted to the ultra-HF device via the serial peripheral interface. If the voltage comes from the HF device, the information of the sensor is transmitted to the HF device via the integrated circuit interface. The ultra-HF device and the ultra-high frequency reader of the ultra-high frequency identification structure transmit information, and the HF device and the near-field communication device of the high frequency identification structure transmit information.
10. A method for using an automatic connection and disconnection device for an electric energy meter, based on an automatic connection and disconnection device for an electric energy meter according to any one of claims 1 to 9, comprising the following steps: Step 1: The electric energy meter to be tested is fixed on the tray (4), and the sensor on the radio frequency identification tag of the identification mechanism detects the electric energy meter to obtain the state and information of the electric energy meter; Step 2: When the UHF identification structure is used, the driving motor on the lifting mechanism (11) drives the tray (4) to automatically transfer to the UHF identification structure position, and the UHF reader transmits information to the ultra-HF device on the RFID tag, determines the model and status of the electric energy meter and displays them on the computer; Step 3: When the high-frequency identification structure is used, the staff turns on the contactless communication function of the near-field communication device and approaches the RFID tag, which will determine the meter model and sensor information and display them on the near-field communication device; Step 4: After identification, the tray (4) automatically moves to the matching terminal position, and the lifting mechanism (11) starts to lift the tray (4) to the verification position; Step 5: The distance sensor (5.3) detects the distance position of the connection head of the electric energy meter socket to determine whether the electric energy meter is in place. When the electric energy meter is in place, the distance sensor (5.3) transmits a signal to the PLC controller, and the PLC controller controls the lifting mechanism (11) to stop and starts the driving mechanism (3). The driving mechanism (3) drives the connection head to move and connect with the electric energy meter for verification; Step 6: After the verification is completed, the device automatically removes the wires and resets.