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A control device and its control method, a circuit breaker

A technology of a control device and a controller, which is applied in the low-voltage electrical field, can solve the problems such as the shortage of serial port resources for processor communication and the increase of circuit breaker functions, and achieve the effects of saving resources, reducing wiring difficulty, and reducing production costs.

Active Publication Date: 2017-01-04
CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the user needs multiple relays, the communication serial port is used for expansion. However, with the increase in circuit breaker functions, the communication serial port resources of the processor are getting tighter and tighter. How to expand the number of relays it controls is a technical problem.

Method used

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  • A control device and its control method, a circuit breaker
  • A control device and its control method, a circuit breaker
  • A control device and its control method, a circuit breaker

Examples

Experimental program
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Effect test

Embodiment 1

[0027] figure 1 It shows the circuit principle of Embodiment 1 of the control device of the present invention, such as figure 1 As shown, the operating voltages of the first and second controllers in the control device in this embodiment are the same, and the control signal detection unit includes two signal collectors: composed of resistors R1, R2 and transistor K1 connected in series, and a diode D1 A signal collector; a signal collector composed of resistors R3, R4 and transistor K2 in series, and a diode D2. One end of the resistors R1 and R3 and the positive input terminals of the first controller and the second controller are respectively connected to the positive pole VDD of the DC power supply, and the negative power input terminal GND1 of the first controller is connected to the common ground of the negative pole of the DC power supply. The bases of the triode K1 and the triode K2 are respectively connected to the two control ports G1 and G2 of the first controller, ...

Embodiment 2

[0036] The circuit principle of the control device in this embodiment is as follows: figure 2 shown, compared to figure 1 The device has an additional power conversion unit for converting the output voltage of the DC power supply into a voltage suitable for the second controller. Such as figure 2 As shown, the control signal detection unit includes two signal collectors: a signal collector composed of resistors R1, R2 connected in series with transistor K1, and diode D1; a signal collector composed of resistors R3, R4 connected in series with transistor K2, and diode D2 a signal collector. One end of the resistors R1 and R3 and the positive input end of the second controller are respectively connected to the positive output end VCC of the power conversion unit, and the negative input end of the first controller is connected to the negative pole of the DC power supply. The bases of the triode K1 and the triode K2 are respectively connected to the two control ports G1 and G...

Embodiment 3

[0044] This embodiment is composed of the control device described in Embodiment 2 and a relay unit controlled by it (including a group of relays), and the relay unit is powered by a power conversion unit. Its circuit principle is as image 3 As shown, the control terminals of the relays in the relay unit are respectively connected to the corresponding control ports of the second controller, the positive power input terminals of each relay are connected to the output positive pole of the power conversion unit, and the negative power input terminals of each relay are connected to the diode D1 , the anode of D2, and the negative input terminal of the power supply of the second controller are commonly connected. All the other parts are the same as in Example two.

[0045] In this embodiment, when both the triode K1 and the triode K2 are off, both the second controller and the relay unit are in the off state. As long as one of the triodes K1 and K2 is turned on, both the second ...

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Abstract

The invention discloses a control device, which belongs to the field of low-voltage electric technology. The control device includes a DC power supply, a first controller, a second controller, and a control signal detection unit; the control signal detection unit includes at least two signal collectors, and each signal collector includes a positive electrode that is sequentially connected to the DC power supply. The first resistor, the second resistor, and the controllable switch, the other end of the controllable switch is connected to the negative pole of the DC power supply and the negative input end of the power supply of the first controller, and the control end of the controllable switch is connected to the first controller. The node between the first resistor and the second resistor is connected to a signal input terminal of the second controller; the positive input terminal of the power supply of the first controller is connected to the positive pole of the DC power supply. The invention also discloses a control method of the control device and a circuit breaker. The invention realizes the extension of the control channel with a simple circuit structure, and can be widely used in situations similar to circuit breaker contact output devices.

Description

technical field [0001] The invention relates to a control device, in particular to a control device, a control method thereof and a circuit breaker, belonging to the technical field of low-voltage electrics. Background technique [0002] In the low-voltage power distribution system, many users need to provide additional fault alarm functions through the programmable output contacts provided by the circuit breaker, such as overload long-delay fault alarm, short-circuit short-delay fault alarm, short-circuit instantaneous fault alarm, ground fault call the police, etc. In recent years, circuit breakers are developing in the direction of diversification of functions, and the user's demand for the number of programmable output contacts is increasing. [0003] In the existing various circuit breaker products, the realization of the programmable output contacts is generally through the following methods. Using one pin of the microprocessor in the circuit breaker controller to co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
Inventor 殷建强叶文杰褚东王颂凯管瑞良
Owner CHANGSHU SWITCHGEAR MFG CO LTD (FORMER CHANGSHU SWITCHGEAR PLANT)
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