CN206807145U - A kind of automatic test device of distribution terminal - Google Patents

Abstract

The utility model discloses an automatic test device for a power distribution terminal. The terminal box is provided with a test work panel, and the test work panel is respectively provided with a liquid crystal touch screen, an input keyboard and a wiring port to control the power supply of the detection unit. terminal is electrically connected with the power management unit, the control detection unit mainly includes an ARM controller, a network controller and a data acquisition card, the communication port of the ARM controller is electrically connected with the network controller, and the input terminal of the ARM controller is connected with the The data acquisition card is electrically connected, and the ARM controller is also electrically connected with the LCD touch screen and the input keyboard respectively. The analog signal output unit mainly includes a power amplifier circuit, a gear switching circuit and a precision sampling circuit. The utility model has the advantages of : Remote monitoring is realized. This device has a complete system structure, is easy to carry, is not restricted by the environment, and can conveniently realize the monitoring of power distribution terminals.

Description

An automatic test device for a power distribution terminal

technical field

The utility model relates to the technical field of power distribution monitoring devices, in particular to the technical field of power distribution terminal testing devices.

Background technique

In recent years, along with the take-off of my country's economy, the construction of the power industry and smart distribution network is also in a new stage of vigorous development. As the last link of the power transmission and distribution system, the degree of automation of the distribution network is closely related to the quality and reliability of power supply. Distribution network automation is an important means to improve power supply quality, improve power supply reliability, expand power supply capacity, and realize efficient and economical operation of distribution network. However, with the expansion of the scope of distribution automation construction, the terminal function configuration is not complete, and phenomena such as refusal to operate, malfunction, low accuracy level, and abnormal communication are gradually exposed. In order to ensure that the terminal has good interconnectivity and can run reliably and stably after it is put into operation, comprehensive and efficient simulation and analysis of various functions, performance parameters, and consistency of communication protocols of the terminal should be carried out before the product is put into operation. test. However, the current common power distribution terminal test devices have a complex structure, large volume, inconvenient portability, and are easily limited by environmental factors.

Utility model content

The purpose of this utility model is to provide an automatic test device for power distribution terminals that is simple in structure, easy to carry and use, not restricted by the environment, and can conveniently monitor power distribution terminals in order to solve the above-mentioned deficiencies.

The technical solution that the utility model adopts in order to solve the above technical problems is as follows:

An automatic test device for a power distribution terminal, which mainly includes a terminal box, and a control detection unit, a power management unit, an analog signal output unit, and a communication unit installed in the terminal box. There is a test work panel, and the test work panel is respectively provided with a liquid crystal touch screen, an input keyboard and a wiring port, and the power supply terminal of the control detection unit is electrically connected with the power management unit. The control detection unit mainly includes an ARM controller, a network control device and data acquisition card, the communication port of the ARM controller is electrically connected to the network controller, the input end of the ARM controller is electrically connected to the data acquisition card, and the ARM controller is also electrically connected to the LCD touch screen and the input keyboard respectively, The analog signal output unit mainly includes a power amplifier circuit, a gear switching circuit and a precision sampling circuit. Electrically connected, the gear switching circuit is electrically connected with the precision sampling circuit, the precision sampling circuit is electrically connected with the data acquisition card, the communication unit mainly includes a wireless transmission module and a wired transmission module, and the network controller is connected with the wireless transmission module respectively. The transmission module is electrically connected to the wired transmission module.

The control detection unit also includes a data memory, the ARM controller adopts a Cortex-M3 processor, and the data memory is electrically connected to the ARM controller.

The power management unit mainly includes a rechargeable lithium battery and a voltage converter, the output terminal of the rechargeable lithium battery is electrically connected to the voltage converter, and the voltage converter is electrically connected to the power terminal of the ARM controller.

The wireless transmission module adopts SST39VF of Silicon Storage Technology Company, and the wireless transmission module is internally integrated with a UART/WIFI converter and a GPRS transceiver.

The wired transmission module includes an Ethernet interface, an RS232 interface and an RS485 interface, and the interface ends of the Ethernet interface, the RS232 interface and the RS485 interface are respectively electrically connected to the network controller.

The beneficial effects that the utility model can achieve by adopting the above technical solutions are: by setting the analog signal output unit, using the gear switching circuit and the precision sampling circuit, combined with the power amplifier circuit to realize the collection of relevant parameters of the power distribution terminal, and it can be adjusted The input value range protects the internal safety of the test terminal; by setting the control detection unit, the ARM controller is combined with the LCD touch screen to realize the result display and parameter setting; by setting the communication unit and network controller, the wireless transmission module and the wired transmission module can be used. The data transmission operation is conveniently realized, thereby realizing remote monitoring; the device has a complete system structure, is easy to carry, is not restricted by the environment, and can conveniently realize the monitoring of power distribution terminals.

Description of drawings

Fig. 1 is the circuit diagram of the utility model;

Fig. 2 is a structural schematic diagram of the utility model.

detailed description

As shown in Figures 1 and 2, an automatic test device for a power distribution terminal mainly includes a terminal box 1, and a control detection unit, a power management unit, and an analog signal output unit installed in the terminal box 1 and a communication unit, the terminal box 1 is provided with a test work panel 2, the power supply end of the control detection unit is electrically connected to the power management unit, the input end of the control detection unit is electrically connected to the analog signal output unit, and the control detection unit The communication end is electrically connected with the communication unit. The test working panel 2 is used to electrically connect the power distribution terminal, the control detection unit is used to detect the power distribution terminal, the analog signal output unit is used for parameter acquisition and conversion, and the communication unit is used for wired and wireless data collection.

The test work panel 2 is respectively provided with a liquid crystal touch screen 3, an input keyboard 4 and a connection port 5, and an indicator light 6 is respectively provided below the connection port 5, and the liquid crystal touch screen 3 is used for interface display, and can carry out parameter It is set that the connection port 5 is used to connect the device to be tested, and the indicator light 6 is lit after the circuit is connected.

The control detection unit mainly includes an ARM controller, a network controller, a data acquisition card and a data memory, the communication port of the ARM controller is electrically connected to the network controller, and the input terminal of the ARM controller is electrically connected to the data acquisition card , the ARM controller is also electrically connected with the liquid crystal touch screen 3 and the input keyboard 4 on the test work panel 2 respectively, the data acquisition card is electrically connected with the analog signal output unit, and the ARM controller adopts a Cortex-M3 processor , the data memory is electrically connected to the ARM controller. The ARM controller is used for data analysis and instruction control, the network controller is used for network parameter setting and transmission control, and the data acquisition card is used for converting the analog output from the analog signal output unit into a digital signal and then sending it The ARM controller analyzes and controls the collected data, stores the analysis and detection results in the data memory, and displays them on the LCD touch screen 3 .

The power management unit mainly includes a rechargeable lithium battery and a voltage converter, the output terminal of the rechargeable lithium battery is electrically connected to the voltage converter, and the voltage converter is electrically connected to the power terminal of the ARM controller. The rechargeable lithium battery provides electric energy for the device, and the voltage converter converts the voltage into a stable low-voltage direct current and provides it to the control and detection unit.

The analog signal output unit mainly includes a gear switching circuit, a precision sampling circuit and a power amplifier circuit, the gear switching circuit is electrically connected to the precision sampling circuit, the precision sampling circuit is electrically connected to the data acquisition card, and the gear The input end of the bit switching circuit is electrically connected to the power amplifier circuit, and the input end of the power amplifier circuit is connected to the power distribution terminal, that is, the power amplifier circuit is connected to the device under test through the connection port 5, and the input signal is amplified, and the amplified signal passes through The gear switching circuit performs the gear switching rotation, and the converted signal is sampled by the precision sampling circuit, and finally sent to the control detection unit.

The communication unit mainly includes a wireless transmission module and a wired transmission module, and the network controller is electrically connected to the wireless transmission module and the wired transmission module respectively. Described wireless transmission module adopts the SST39VF of Silicon Storage Technology Company (SST), and this wireless transmission module is internally integrated with UART/WIFI converter and GPRS transceiver, and described wireless transmission module converts data into WIFI signal by UART/WIFI converter , and then transmit it through the GPRS transceiver. The wired transmission module includes an Ethernet interface, an RS232 interface and an RS485 interface, and the interface ends of the Ethernet interface, the RS232 interface and the RS485 interface are respectively electrically connected to the network controller, and can be connected to different devices through network cables of different interfaces connected to realize wired data transmission.

This description only introduces the core technical content of the technical solution that has made creative contributions, and the rest of the content that is not fully introduced in detail is the content that can be realized by those skilled in the art, and no detailed description is needed here.

Claims (5)

1. A kind of 1. automatic test device of distribution terminal, it is characterised in that：It mainly includes terminating machine box, and is arranged on Control detection unit, PMU, analog signalses output unit and communication unit in terminating machine box, the terminating machine Test job panel is provided with box, liquid crystal touch screen, input keyboard and wiring are respectively arranged with the test job panel Port, the power end of detection unit is controlled to be electrically connected with PMU, the control detection unit mainly includes ARM controls Device, network controller and data collecting card processed, the COM1 of the ARM controller electrically connect with network controller, ARM controls The input of device electrically connects with data collecting card, and the ARM controller also electrically connects with liquid crystal touch screen and input keyboard respectively, The analog signalses output unit mainly includes power amplifier, gear switch circuit and accurate sample circuit, the power amplifier The input of circuit electrically connects with the Wiring port on test job panel, output end and the gear switch circuit electricity of power amplifier Connection, gear switch circuit electrically connect with accurate sample circuit again, and the accurate sample circuit electrically connects with data collecting card, institute State communication unit and mainly include wireless transport module and wire transmission module, the network controller is respectively with being wirelessly transferred mould Block and the electrical connection of wire transmission module.
2. A kind of 2. automatic test device of distribution terminal according to claim 1, it is characterised in that：The control detection Unit also includes data storage, and the ARM controller uses Cortex-M3 processors, and the data storage is controlled with ARM Device electrical connection processed.
3. A kind of 3. automatic test device of distribution terminal according to claim 1 or 2, it is characterised in that：The power supply Administrative unit mainly includes charged lithium cells and voltage changer, output end and the voltage changer electricity of the charged lithium cells Connection, the voltage changer electrically connect with the power end of ARM controller.
4. A kind of 4. automatic test device of distribution terminal according to claim 1 or 2, it is characterised in that：It is described wireless Transport module stores the SST39VF of scientific ＆ technical corporation using Silicon, and the wireless transport module has been internally integrated UART/WIFI and turned Parallel operation and GPRS transceivers.
5. A kind of 5. automatic test device of distribution terminal according to claim 1 or 2, it is characterised in that：It is described wired Transport module includes Ethernet interface, RS232 interface and RS485 interfaces, the Ethernet interface, RS232 interface and RS485 The interface end of interface electrically connects with network controller respectively.