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Detection circuit with divider resistor and with socket in good plug-in connection

A technology for detecting circuits and voltage dividing resistors, which can be used in electrical connection testing and other directions, and can solve the problem of high cost

Active Publication Date: 2020-10-23
深圳领跑者新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It can be seen from the above that the realization of this function requires expensive isolated operational amplifier devices, which are very expensive

Method used

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  • Detection circuit with divider resistor and with socket in good plug-in connection

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Embodiment Construction

[0016] Such as figure 1 As shown, the detection circuit provided by the present invention is a detection circuit in which the socket with a voltage dividing resistor is plugged in intact, and the detection circuit in which the socket with a voltage dividing resistor is plugged in intact includes a voltage division input unit, a hardware upper limit detection unit, a hardware lower limit detection unit and An isolated drive unit, the output end of the voltage division input unit is connected to the input end of the hardware upper limit detection unit, the output end of the hardware upper limit detection unit is connected to the input end of the hardware lower limit detection unit, and the hardware lower limit detection unit The output terminal of is connected to the input terminal of the isolated driving unit.

[0017] The voltage division input unit makes the input voltage float between 3.5-4.5 after voltage division according to the internal voltage division detection resista...

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Abstract

The invention is applicable to the field of circuit detection technology improvement, and provides a detection circuit with a divider resistor and with a socket in good plug-in connection. The circuitcomprises a voltage division input unit, a hardware upper limit detection unit, a hardware lower limit detection unit and an isolation driving unit. The output end of the voltage division input unitis connected with the input end of the hardware upper limit detection unit, the output end of the hardware upper limit detection unit is connected with the input end of the hardware lower limit detection unit, and the output end of the hardware lower limit detection unit is connected with the input end of the isolation driving unit. The detection circuit is simple in structure, the cost is reducedthrough an optocoupler, a voltage division network is established, voltage output after voltage division required by the technical standard is achieved through the voltage division network and a resistor on a socket, low-voltage output is divided, and it is required that the voltage output falls into a given fault tolerance range.

Description

technical field [0001] The invention belongs to the technical improvement field of circuit detection, and in particular relates to a detection circuit in which a socket with a voltage dividing resistor is well inserted. Background technique [0002] In order to meet the requirements of reliable connection, many devices need to detect the connection status of professional cable sockets; these cable sockets are only equipped with a detection circuit of about 500 ohms, and the main device needs to provide a reliable circuit to divide the voltage with it. According to the requirements of the regulations, the voltage needs to be amplified by an isolated op amp with a withstand voltage of about 4000VAC, and then sent to the MCU processor for sampling calculation. By judging the difference between the divided voltage before and after the socket is connected, at the same time, it is determined whether the voltage dividing network is in It is within the required fault-tolerant voltag...

Claims

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Application Information

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IPC IPC(8): G01R31/69
CPCG01R31/69
Inventor 曾君
Owner 深圳领跑者新能源有限公司