CN201163264Y

CN201163264Y - Circuit controller of salt spray corrosion test box

Info

Publication number: CN201163264Y
Application number: CNU2007200592851U
Authority: CN
Inventors: 揭敢新; 江鲁; 王帅
Original assignee: GUANGZHOU ELECTRICAL EQUIPMENT SCIENTIFIC RESEARCH INST
Current assignee: Vkan Certification and Testing Co., Ltd.
Priority date: 2007-11-07
Filing date: 2007-11-07
Publication date: 2008-12-10
Anticipated expiration: 2017-11-07

Abstract

The utility model discloses a novel circuit controller for a salt-mist corrosion tester, comprising a singlechip module, a relay module, a temperature measurer module, a nixie tube display module, a keyboard module, an alarm module and a singlechip applique circuit module, wherein, the temperature measurer module transmits data information to the singlechip module for processing through a corresponding data transmission port; and after processed by the singlechip module, the data information is displayed on the nixie tube display module and then outputted to the relay module through a corresponding data transmission port. Because the novel circuit controller for the salt-mist corrosion tester adopts a solid state relay, the precision and the accuracy of a test are improved; and the corrosion degree of a control circuit can be reduced, and the long-term stable operation of the circuit is guaranteed. Moreover, the novel circuit controller for the salt-mist corrosion tester is provided with a punctual and precise alarm circuit which can guarantee the safe operation of a system.

Description

A kind of salt-mist corrosion tester circuit controller

Technical field

The utility model relates to a kind of novel salt-mist corrosion tester circuit controller.

Background technology

At present, most of salt-mist corrosion tester circuit controllers mainly adopt a large amount of instrument and meters and traditional circuit controller, cause water temperature not reach design temperature on control flow easily and just test, and this causes the precision of test and accuracy not high; Binding post exposes in the environment of salt air corrosion is arranged in addition, has increased the extent of corrosion of controller, thereby influences the long-play of circuit.In addition,, run into when parameter changes and to handle it immediately, affect the governing speed of device to a certain extent, also make the test findings degree of accuracy not high owing to exist certain hysteresis quality based on the instrument of P.I.D control.

The utility model content

The purpose of this utility model provides a kind of novel salt-mist corrosion tester circuit controller with solid-state relay control and accurate warning circuit.

The purpose of this utility model can be achieved by the following technical programs: a kind of novel salt-mist corrosion tester circuit controller comprises one-chip computer module, relay module, the temperature element module, the charactron display module, key-press module, alarm module and single-chip microcomputer adjunct circuit module; Described temperature element module transmits one-chip computer module with data message through corresponding data transmission port and handles, and is presented on the charactron display module and with information after one-chip computer module is handled and outputs to relay module through corresponding data transmission port.

One-chip computer module described in the utility model comprises single-chip microcomputer M1 and single-chip microcomputer M2, and both connect by corresponding data transmission port.

Relay module described in the utility model comprises triode Q1, Q2, Q3, Q4, relay W1, W2, W3, W4 and resistance R 2, R3, R4, R5, R11, R12, R13, R14; The base stage of described triode Q1, Q2, Q3, Q4 is connected to P1.0, P1.1, P1.2, the P1.3 port of single-chip microcomputer M2 respectively by resistance R 2, R3, R4, R5, its collector connects relay W1, W2, W3, W4 respectively, and link together its grounded emitter respectively by resistance R 11, R12, R13, R14.

Compared with prior art, the utlity model has following advantage: one, because the utility model has adopted solid-state relay, the precision and the accuracy of test are increased, and have reduced the extent of corrosion of control circuit, guarantee the circuit long-time steady operation; Two because the utility model is provided with punctual accurate warning circuit, can guarantee the safe operation of system.

Description of drawings

Fig. 1 is a basic structure schematic diagram of the present utility model;

Fig. 2 is the circuit theory diagrams of single-chip microcomputer M1;

Fig. 3 is the circuit theory diagrams of single-chip microcomputer M2.

Embodiment

As accompanying drawing 2, the function that B1, B2, four buttons of B3, B4 are corresponding respectively is: start shooting, heat, dehumidify, stop.P1.0, P1.1, P1.2, P1.3 link to each other with P1.4, P1.5, P1.6, P1.7 in the accompanying drawing 3 and signal are passed to the single-chip microcomputer M2 of accompanying drawing 3.P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 and P2.0, P2.1, P2.2, the digital display tubes of four LED of P2.3 control, display tube are used for the display setting timing, and this time is hour being unit.B5, B6 key are used for setting timing.Two buttons are pressed together and are started regularly, and the B5 key will increase numeral regularly one by one, and the B6 key realizes that four display tubes show moving to left of position.D6 is the off-test identification light, and when timing finished, P3.2 mouth output high level was lighted D6.D5 is the timing working pilot lamp, and P3.3 output high level is lighted D5 when regularly starting.

P2.7 among Fig. 2 links to each other with P2.7 among Fig. 3, transmits the signal transmission between two single-chip microcomputer M1-M2.

As accompanying drawing 3, W1, W2, W3, W4 are solid-state relay, control the heating of saturated bucket, heating, spray solenoid valve and the dehumidifying solenoid valve of chamber respectively.Four solid-state relays drive by Q1, Q2, four transistor amplifiers of Q3, Q4.The base stage of triode Q1, Q2, Q3, Q4 is connected to P1.0, P1.1, P1.2, the P1.3 port of single-chip microcomputer M2 respectively by resistance R 2, R3, R4, R5, its collector connects relay W1, W2, W3, W4 respectively, and link together by resistance R 11, R12, R13, R14 respectively, its grounded emitter is so P1.0, P1.1, P1.2, P1.3 have controlled the action of W1, W2, these four relays of W3, W4.P1.4, P1.5, P1.6, P1.7 are connected on the single-chip microcomputer M1 of Fig. 2, detect B1, the B2 on Fig. 2, the respective change of B3, B4.U1, U2, U3, U4 are four temperature elements, are connected on the same line, hang on the P2.6 pin.U1 detects the temperature in the chamber, and U2 is a chamber temperature subtest, and when both temperature differ 5 degree when above, the overtemperature warning lamp of chamber is bright with stopping pilot lamp; The temperature of the saturated bucket of monitoring when U3 and U4, principle of work is the same with U1 and U2.Fig. 3 upper right corner is the digital display tubes of two three LED, is first charactron and second charactron, shows saturated barrel temperature and chamber temperature respectively.Button B7, B8 set chamber temperature and saturated barrel temperature by the mode that increases one by one.D4, D3 are respectively the thermal light of chamber and saturated bucket, when U1 when U4 has a temperature to be higher than the respective settings temperature, lamp is bright.B9, B10 are two external float switches, and when water level is low excessively, switch closure influences P3.4 or P3.5 position, and then lights D2 or D1 low water alarm lamp.

Workflow: the start button is pressed, and two temperature show that first charactron, second charactron start working.Single-chip microcomputer M2 reads the temperature that P2.6 goes up U1, U2, U3, U4, is presented on first charactron, second charactron.Press and add hot key and enter temperature set status, can set test temperature by B7 and B8.Temperature and setting value that single-chip microcomputer M2 constantly gathers U1, U2, U3, U4 compare, when actual temperature greater than design temperature twice the time, correspondingly add electrothermal relay control end P1.0 or P1.1 zero clearing, reach the purpose that stops to heat, relatively U1 and U2 or U3 and U4 respectively surpass five when spending when two groups of any one group of temperature differ, and have illustrated that one group of thermometric device breaks down, corresponding P3.2 or P3.3 output high level are lighted D4 or D3.P1.0 or P1.1 end output high level start heating arrangement when waiting for when actual temperature is less than design temperature twice.When temperature reached the test design temperature, P1.2 exported high level, and the spraying relay is started working, and chamber enters the spray testing stage automatically.The process of the test middle water level is changing constantly, when the water level of chamber or saturated bucket is crossed when low, a closure in corresponding B9 or two external float switches of B10 makes P3.4 or P3.5 position output high level, and then light D2 or D1 low water alarm lamp, and stop the work of whole device.

On accompanying drawing 2, the function of realization is a timing function.When B5, B6 were pressed together, promptly P3.0 and P3.1 were 0 o'clock simultaneously, and timing function starts, and P3.3 exports high level, and the D5 pilot lamp is bright.Carry out timing setting by B5, B6.

Regularly finish or press stop key after, each device all quits work, it is bright only to stop pilot lamp.

On type of heating, water is heated test automatically again after reaching design temperature earlier, improve test accuracy and accuracy, and reduced the extent of corrosion of control circuit, guarantee the circuit long-time steady operation.

What this programme adopted on digital display tube and interface microcontroller is directly to be connected, and alternative plan also has 8255 pairs of single-chip microcomputer pins of application chip to expand herein, reaches the purpose that connects charactron at last.Because application chip 8255 also needs to carry out corresponding program design, institute thinks and simplifies procedures, and adopts.

In the button part, can use technology such as touch-screen, but because this invention is mainly paid attention to practical application effect, the working condition of hardware and software is paid the utmost attention to, so do not adopt touch-screen temporarily.

Claims

1, a kind of salt-mist corrosion tester circuit controller is characterized in that: comprise one-chip computer module, relay module, temperature element module, charactron display module, key-press module, alarm module and single-chip microcomputer adjunct circuit module; Described temperature element module transmits one-chip computer module with data message through corresponding data transmission port and handles, and is presented on the charactron display module and with information after one-chip computer module is handled and outputs to relay module through corresponding data transmission port.

2, a kind of salt-mist corrosion tester circuit controller according to claim 1, it is characterized in that: described one-chip computer module comprises single-chip microcomputer M1 and single-chip microcomputer M2, and both connect by corresponding data transmission port.

3, a kind of salt-mist corrosion tester circuit controller according to claim 1, it is characterized in that: described relay module comprises triode Q1, Q2, Q3, Q4, relay W1, W2, W3, W4 and resistance R 2, R3, R4, R5, R11, R12, R13, R14; The base stage of described triode Q1, Q2, Q3, Q4 is connected to P1.0, P1.1, P1.2, the P1.3 port of single-chip microcomputer M2 respectively by resistance R 2, R3, R4, R5, its collector connects relay W1, W2, W3, W4 respectively, and link together its grounded emitter respectively by resistance R 11, R12, R13, R14.