CN211318677U - High-voltage high-speed circuit breaker testing device - Google Patents
High-voltage high-speed circuit breaker testing device Download PDFInfo
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- CN211318677U CN211318677U CN201922049109.5U CN201922049109U CN211318677U CN 211318677 U CN211318677 U CN 211318677U CN 201922049109 U CN201922049109 U CN 201922049109U CN 211318677 U CN211318677 U CN 211318677U
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Abstract
The utility model discloses a high-voltage high-speed circuit breaker testing arrangement, include: the system comprises a signal acquisition sensor, an A/D (analog/digital) conversion module, a main controller, a data transmission module and an upper computer; the input end of the signal acquisition sensor is connected with the high-voltage high-speed circuit breaker, the output end of the signal acquisition sensor is connected with the input end of the A/D analog-to-digital conversion module, the output end of the A/D analog-to-digital conversion module is connected with the input end of the main controller, and the output end of the main controller is connected with the upper computer through the data transmission module. The utility model discloses a system integration level is high, and data processing is fast, has realized the high efficiency and the promptness of system, has really accomplished low-cost high-effect.
Description
Technical Field
The utility model belongs to the technical field of rail transit traction system tests, specifically indicate a high-pressure high-speed circuit breaker testing arrangement.
Background
The high-voltage high-speed circuit breaker is one of key components on a subway vehicle, the number of the high-voltage high-speed circuit breaker is large, the maintenance and replacement cost is high, and once the high-voltage high-speed circuit breaker breaks down, very serious consequences are often brought. Regular maintenance can be carried out on the high-voltage high-speed circuit breaker on the metro vehicle, the problem is usually solved by replacing the high-voltage high-speed circuit breaker, much time and cost are consumed, certain pertinence is lacked, and the defects of 'over-maintenance' and 'under-maintenance' of equipment are often brought, so that the method has important significance for the research on the high-voltage high-speed circuit breaker testing device.
Disclosure of Invention
An object of the utility model is to the not enough of above-mentioned prior art, the utility model is to provide a high-pressure high-speed circuit breaker testing arrangement to solve among the prior art traditional high-pressure high-speed circuit breaker overhaul plan brought "overhauls" and the problem of the equipment "owing to repair".
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a high-speed circuit breaker testing arrangement of high pressure, include: the system comprises a signal acquisition sensor, an A/D (analog/digital) conversion module, a main controller, a data transmission module and an upper computer; the input end of the signal acquisition sensor is connected with the high-voltage high-speed circuit breaker, the output end of the signal acquisition sensor is connected with the input end of the A/D analog-to-digital conversion module, the output end of the A/D analog-to-digital conversion module is connected with the input end of the main controller, and the output end of the main controller is connected with the upper computer through the data transmission module.
Further, the signal acquisition sensor comprises: displacement sensor, current sensor and voltage sensor.
Further, the physical quantities of the operating state of the high-voltage high-speed circuit breaker include: a current signal, a voltage signal, and a displacement signal.
Furthermore, the signal acquisition sensor is connected with the A/D conversion module through a gain amplification module.
Further, the main controller is an STM32 series chip.
Further, the data transmission module comprises a FIFO buffer circuit and a USB transmission circuit.
The utility model has the advantages that:
the utility model discloses a system integration level is high, and data processing is fast, has realized the high efficiency and the promptness of system, has really accomplished low-cost high-effect.
Drawings
Fig. 1 is a schematic block diagram of the structure of the device of the present invention.
FIG. 2 is a circuit diagram of an STM32103ZET microprocessor.
Fig. 3 is a circuit diagram of a FIFO buffer circuit.
FIG. 4 is a circuit diagram of a USB transmission circuit.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Referring to fig. 1, the utility model discloses a high-voltage high-speed circuit breaker testing arrangement, include: the system comprises a signal acquisition sensor, an A/D (analog/digital) conversion module, a main controller, a data transmission module and an upper computer; wherein the content of the first and second substances,
the signal acquisition sensor is respectively composed of a displacement sensor, a current sensor, a voltage sensor and the like; the sensor measures physical quantities of the operation state of the high-voltage high-speed circuit breaker in the operation process of the high-voltage high-speed circuit breaker, such as signals of current, voltage, displacement and the like, and transmits the signals to the A/D conversion module.
In a preferred example, a gain amplification module is connected between the signal acquisition sensor and the a/D analog-to-digital conversion module, and the acquired signal is subjected to gain amplification processing by the gain amplification module;
the A/D conversion module carries out A/D conversion on the collected signals of current, voltage, displacement and the like to digital signals, and then transmits the digital signals to the main controller; the A/D conversion module mainly comprises an A/D conversion chip AD9225 and a driving circuit thereof, and realizes the analog-to-digital conversion of signal data. The AD9225 is a high-speed analog-to-digital conversion chip with 12-bit precision, has the advantages of low power consumption, high performance, no missing code in conversion, single power supply and the like, and the output data format is binary. The module adopts an AD8138 differential amplifier to realize differential drive on the AD 9225. The most important advantages of the AD8138 are that harmonics can be suppressed, the use is easy, and the like, and at the same time, the conversion driving process of signals is greatly simplified. And has high-performance ADC, can keep the direct current information. During the acquisition process, the SCLK of AD9225 is set to 1MHz, and the tracking is started when the SCLK enters the 16 th period, which requires the ADC driver to establish contact within 39 ns. Through parameter query, the AD8138 can be established only in 16ns, and the acquisition requirement is met.
The main controller controls the gain amplitude, the conversion cache clock, data transmission and the like of the converted digital signals, and transmits the processed data to the upper computer through the data transmission module. Referring to fig. 2, the main controller selects an STM32103ZET microprocessor of an STM32 series, pins PB 10-PB 15 are used for controlling gains of the acquisition channels, CS 1-3 correspond to three channels respectively, and pins SCK, MOSI and MISO are shared by three channels; the 42 pin USB-EN is responsible for data transmission; and the 43-pin PWM is responsible for providing the clock of the A/D conversion chip and the FIFO buffer chip.
The data transmission module comprises two parts, namely a FIFO buffer circuit and a USB transmission circuit. Due to the high data transmission speed, the large amount of information and the insufficient processing capacity of the control chip, a cache unit needs to be designed to realize real-time acquisition. Referring to fig. 3, IDT7208 is selected as the FIFO buffer circuit, the storage capacity is large, and the access time is only 15 ns. The design of the cache circuit is simplified, data loss during storage can be prevented, frequent operation of the bus is avoided, and the burden of the microprocessor of the control module is reduced.
Referring to fig. 4, in RS485 communication, the maximum transmission rate of the USB interface is about 4 times that of the serial interface. In order to ensure high-speed transmission of data, a USB interface is selected for system transmission.
The upper computer analyzes the acquired digital signals so as to judge whether the technical state of the high-voltage high-speed circuit breaker is normal or not; the technical state of the high-voltage high-speed circuit breaker is judged and displayed mainly through Matlab software on a PC.
The utility model discloses the concrete application way is many, and the above-mentioned only is the preferred embodiment of the utility model, should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements, and these improvements also should be regarded as the utility model discloses a scope of protection.
Claims (6)
1. A high-voltage high-speed circuit breaker testing device is characterized by comprising: the system comprises a signal acquisition sensor, an A/D (analog/digital) conversion module, a main controller, a data transmission module and an upper computer; the input end of the signal acquisition sensor is connected with the high-voltage high-speed circuit breaker, the output end of the signal acquisition sensor is connected with the input end of the A/D analog-to-digital conversion module, the output end of the A/D analog-to-digital conversion module is connected with the input end of the main controller, and the output end of the main controller is connected with the upper computer through the data transmission module.
2. The high voltage high speed circuit breaker testing apparatus of claim 1, wherein the signal acquisition sensor comprises: displacement sensor, current sensor and voltage sensor.
3. The high-voltage high-speed circuit breaker testing device according to claim 1, wherein the physical quantities of the operating state of the high-voltage high-speed circuit breaker include: a current signal, a voltage signal, and a displacement signal.
4. The high-voltage high-speed circuit breaker testing device according to claim 1, wherein the signal acquisition sensor is connected with the A/D conversion module through a gain amplification module.
5. The high voltage high speed circuit breaker testing apparatus of claim 1, wherein the main controller is an STM32 series chip.
6. The high voltage high speed circuit breaker testing apparatus according to claim 1, wherein the data transmission module comprises a FIFO buffer circuit and a USB transmission circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922049109.5U CN211318677U (en) | 2019-11-25 | 2019-11-25 | High-voltage high-speed circuit breaker testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922049109.5U CN211318677U (en) | 2019-11-25 | 2019-11-25 | High-voltage high-speed circuit breaker testing device |
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| CN211318677U true CN211318677U (en) | 2020-08-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731132A (en) * | 2020-12-24 | 2021-04-30 | 申通庞巴迪(上海)轨道交通车辆维修有限公司 | High-speed circuit breaker closing test system |
-
2019
- 2019-11-25 CN CN201922049109.5U patent/CN211318677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731132A (en) * | 2020-12-24 | 2021-04-30 | 申通庞巴迪(上海)轨道交通车辆维修有限公司 | High-speed circuit breaker closing test system |
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