CN203643575U

CN203643575U - Relay tester

Info

Publication number: CN203643575U
Application number: CN201320779558.5U
Authority: CN
Inventors: 陈中建
Original assignee: Suzhou Wei Tekes Electronic Science And Technology Co Ltd
Current assignee: Suzhou Wei Tekes Electronic Science And Technology Co Ltd
Priority date: 2013-12-02
Filing date: 2013-12-02
Publication date: 2014-06-11
Anticipated expiration: 2023-12-02

Abstract

The utility model provides a relay tester. The relay tester comprises a current on-off circuit, and the current on-off circuit comprises a transformer, a current transformer and a signal amplification circuit. One end of a capacitor is electrically connected with an adjustable DC power supply, and the other end is in series connection with the current transformer and the transformer. The transformer outputs a low voltage, and the low voltage is rectified and filtered into a DC voltage to be transmitted to the signal amplification circuit composed of triodes. The current on-off circuit is electrically connected with an on-off controller composed of an on-off time setter and a pulse drive circuit, and the pulse drive circuit sends control signals to the current on-off circuit according to a time setting cycle to control the on-off of the current of a relay. During the process that the relay is turned on and turned off continuously, a copper sheet and an electrode impact continuously until the copper sheet and the electrode go wrong. The tester of the utility model can test the service life of the relay, and enables the quality of the relay to be controlled based on the sample test during the batch production process.

Description

Relay tester

Technical field

The utility model relates to a kind of electric test equipment, is specifically related to the relay tester of the relay quality that a kind of test produces.

Background technology

Relay (English name: relay) is a kind of electric control device, is in the time that the variation of input quantity (energizing quantity) reaches regulation requirement, makes controlled volume that a kind of electrical equipment that predetermined step changes occurs in electric output circuit.It has control system (claim not only input circuit) and by the interactive relationship between control system (but also claiming output loop).Conventionally be applied in the control circuit of robotization, it is actually the one " automatic switch " of going to control large electric current running with little electric current.Therefore play the effects such as automatic adjusting, safeguard protection, change-over circuit in circuit.

Relay principle of work is to produce magnetic force by magnetic field, makes the connection of relay by the copper sheet in magnetic attraction relay and electrode adhesive.After magnetic force disappears, copper sheet and electrode divide open relay to disconnect.Relay is by controlling the break-make of current switching with electric current in control circuit.

Due between copper sheet and electrode constantly adhesive collision make easily damage of relay itself, after the collision of certain number of times, will to produce fault ineffective for relay itself.Therefore must guarantee in certain number of times that copper sheet and electrode damage can not occur relay cannot adhesive or separate the relay causing and lost efficacy.So after relay is produced in batches, in sample drawn busy relay, copper sheet and electrode adhesive number of times carry out the quality of verification relay.

Utility model content

For solving the problems of the technologies described above, the utility model provides a kind of relay tester, its objective is a kind of proving installation that can busy relay quality is provided.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of relay tester, comprise current switching circuit, described current switching circuit comprises transformer, current transformer, and signal amplification circuit, capacitor one end and adjustable DC power supply electrically connect, other end serial connection current transformer and the transformer of capacitor, transformer output LOW voltage, through rectification, be filtered into DC voltage and supply with the signal amplification circuit of triode composition;

Described current switching circuit electrically connects with the break-make controller being made up of make-and-break time setting apparatus and pulse driving circuit.

Wherein, described make-and-break time setting apparatus comprises control chip, solid-state relay and power circuit, the load end positive pole of described solid-state relay is connected with direct supply, the load end negative pole of solid-state relay is connected with the power end door of DC equipment, and the control end positive pole of solid-state relay is connected with the output port of power source of power circuit.

Wherein, described pulse driving circuit

Include pressure transducer, amplification and second-order low-pass filter, integration and comparator circuit, timing and pulse shaping circuit, driving circuit; The output termination amplification of pressure transducer and the input end of second-order low-pass filter circuit, the output of amplification and second-order low-pass filter circuit connects the input end of timing and pulse shaping circuit, the input end of the output termination driving circuit of timing and pulse shaping circuit through integration and comparator circuit.

By technique scheme, a kind of relay tester that the utility model provides, its beneficial effect is: it connects in outside adjustable DC power supply, opens direct supply, and is adjusted to relay required voltage value; Arrange and complete make-and-break time setting apparatus setting relay-operating time and release time setup times.Pulse driving circuit transmitted control signal to current switching circuit according to the setting-up time cycle, the break-make of pilot relay electric current; Relay, constantly connecting in the process disconnecting, constantly collides between copper sheet and electrode, until copper sheet and electrode break down.In serviceable life that can busy relay by this tester, guarantee the control to relay quality to test sample in batch production process.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below.

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.

The present embodiment as shown in Figure 1, a kind of relay tester, comprise current switching circuit 2, described current switching circuit 2 comprises transformer, current transformer, and signal amplification circuit, capacitor one end and adjustable DC power supply electrically connect, other end serial connection current transformer and the transformer of capacitor, transformer output LOW voltage, through rectification, be filtered into DC voltage and supply with the signal amplification circuit of triode composition;

Described current switching circuit 2 electrically connects with the break-make controller being made up of make-and-break time setting apparatus 3 and pulse driving circuit 4.

Wherein, described make-and-break time setting apparatus 3 comprises control chip, solid-state relay and power circuit, the load end positive pole of described solid-state relay is connected with direct supply, the load end negative pole of solid-state relay is connected with the power end door of DC equipment, and the control end positive pole of solid-state relay is connected with the output port of power source of power circuit.

Wherein, described pulse driving circuit 4 includes pressure transducer, amplification and second-order low-pass filter, integration and comparator circuit, timing and pulse shaping circuit, driving circuit; The output termination amplification of pressure transducer and the input end of second-order low-pass filter circuit, the output of amplification and second-order low-pass filter circuit connects the input end of timing and pulse shaping circuit, the input end of the output termination driving circuit of timing and pulse shaping circuit through integration and comparator circuit.

The principle of work of the present embodiment is as follows:

This tester is connected with outside adjustable DC power supply 1, opens adjustable DC power supply, and is adjusted to relay 5 required voltage values; Make-and-break time setting apparatus 3 is set to be set and completes 5 pickup times of relay and release time setup times.Pulse driving circuit 4 transmitted control signal to current switching circuit 2 according to the setting-up time cycle, the break-make of pilot relay 5 electric currents; Relay 5, constantly connecting in the process disconnecting, constantly collides between copper sheet and electrode, until copper sheet and electrode break down.In serviceable life that can busy relay by this tester, guarantee the control to relay quality to test sample in batch production process.

The above-mentioned explanation of embodiment disclosed in the utility model, makes professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. a relay tester, it is characterized in that, comprise current switching circuit, described current switching circuit comprises transformer, current transformer, and signal amplification circuit, capacitor one end and adjustable DC power supply electrically connect, other end serial connection current transformer and the transformer of capacitor, transformer output LOW voltage, through rectification, be filtered into DC voltage and supply with the signal amplification circuit of triode composition;

2. a kind of relay tester according to claim 1, it is characterized in that, described make-and-break time setting apparatus comprises control chip, solid-state relay and power circuit, the load end positive pole of described solid-state relay is connected with direct supply, the load end negative pole of solid-state relay is connected with the power end door of DC equipment, and the control end positive pole of solid-state relay is connected with the output port of power source of power circuit.

3. a kind of relay tester according to claim 1, is characterized in that, described pulse driving circuit includes pressure transducer, amplification and second-order low-pass filter, integration and comparator circuit, timing and pulse shaping circuit, driving circuit; The output termination amplification of pressure transducer and the input end of second-order low-pass filter circuit, the output of amplification and second-order low-pass filter circuit connects the input end of timing and pulse shaping circuit, the input end of the output termination driving circuit of timing and pulse shaping circuit through integration and comparator circuit.