CN204495940U

CN204495940U - Dynamic hit detection instrument

Info

Publication number: CN204495940U
Application number: CN201520224739.0U
Authority: CN
Inventors: 赵楠林; 安刚虎
Original assignee: QINGDAO HAINENG ALPINE RAIL POWER EQUIPMENT ENGINEERING TECHNOLOGY Co Ltd; Qingdao Hai Neng Electric Applicance Co Ltd
Current assignee: QINGDAO HAINENG ALPINE RAIL POWER EQUIPMENT ENGINEERING TECHNOLOGY Co Ltd; Qingdao Hai Neng Electric Applicance Co Ltd
Priority date: 2015-04-15
Filing date: 2015-04-15
Publication date: 2015-07-22
Anticipated expiration: 2025-04-15

Abstract

Dynamic hit detection instrument, comprise: tested connector, hit testing circuit, hit trigger circuit, flush bonding processor, LCDs, reset key and page turning key, it is characterized in that, hit testing circuit is connected with tested connector, hit trigger circuit respectively with hit testing circuit, flush bonding processor connects, flush bonding processor respectively with hit testing circuit, LCDs, reset key is connected with page turning key, this dynamic hit detection instrument limit for the single-chip microcomputer response time, be difficult to realize the problem that multichannel hit fault-signal effectively catches, adopt high-precision STC12C5A60S2 flush bonding processor, effective seizure of hit signal can be realized by increasing by hit trigger circuit, process, ensure that accuracy and the reliability of testing result.

Description

Dynamic hit detection instrument

Technical field

The utility model relates to a kind of interconnect devices hit pick-up unit, is specifically related to a kind of dynamically hit detection instrument.

Background technology

Dynamic hit detection instrument is used to monitor the instrument whether interconnect devices instant cut-off phenomenon can occur under the dynamic environments for use such as vibration, in order to the interconnect devices contact reliability in monitoring vibration situation, a lot of hit detection system is had in prior art, the such as patent No. is 200920031926.1 " Multi-cable connector intermittent disconnection testing systems " and the patent No. is 200720126435.6 " intermittent disconnection testing system for electric contact piece " etc., the hit that all can realize static connector detects, existing intermittent disconnection testing system, mainly through detecting tested connector contact resistance, wink break time length and by voltage comparator the voltage that tested connector resistance is changed compared and detect the contact reliability of connector under dynamic environment, existing detection system complex structure, volume is large, line cost is high, its kernel processor chip many employings 51 series monolithic is as processing unit, because the single-chip microcomputer response time limit, in test process, the double hit that system can capture has a minimum interval, especially when multichannel hit detects simultaneously, if there is second time hit in this minimum interval, be difficult to tested system acquires arrive, very easily there is detection leakage phenomenon, therefore the Real-Time Monitoring of tested connector in testing process how is ensured, it is current urgent problem.

Summary of the invention

In order to solve the problem of above-mentioned proposition, the utility model provides a kind of dynamically hit detection instrument, this dynamic hit detection instrument limit for the single-chip microcomputer response time, be difficult to realize the problem that multichannel hit fault-signal effectively catches, adopt STC12C5A60S2 flush bonding processor, effective seizure of hit signal, process can be realized by increasing by hit trigger circuit, ensure that accuracy and the reliability of testing result.

Above-mentioned hit trigger circuit adopt 3 74HC21 chips to realize 14 road hit signals and trigger, its course of work as shown in Figure 2, 14 road hit signals are inputted with door by 44 inputs, rear class adds road 4 input and realizes 14 road signal phase and logics with door, when tested connector generation instant cut-off, hit trigger circuit level is by high step-down, produce a negative edge signal, informed embed formula processor starts hit and detects, effective pull-in time of these hit trigger circuit can control within 100ns, exceed the accuracy requirement of former 1us, circuit structure is simple, stable performance, even if under extreme conditions (125 degrees Celsius), its reaction velocity also can reach 82ns.

Above-mentioned flush bonding processor adopts STC12C5A60S2 processor.

The dynamic hit detection instrument that the utility model provides, its agent structure comprises: tested connector, hit testing circuit, hit trigger circuit, flush bonding processor, LCDs, reset key and page turning key.It is characterized in that, hit testing circuit is connected with tested connector, for detecting the change of tested voltage connector, hit trigger circuit respectively with hit testing circuit, flush bonding processor connects, for receiving the hit control signal that hit testing circuit sends, and send to flush bonding processor, flush bonding processor respectively with hit testing circuit, hit trigger circuit, LCDs connects, for analyzing and processing hit steering order and storage input signal, reset key is connected with flush bonding processor, for removing the signal that flush bonding processor stores, page turning key is connected with flush bonding processor, for controlling the Circulating fibrocytes of liquid crystal display display data.

Feature of the present utility model: apply high-precision STC12C5A60S2 flush bonding processor, accurate acquisition to tested connector hit fault-signal, process is completed with reliable, stable testing circuit and trigger circuit, testing circuit reasonable in design, compact conformation, stable performance, cost performance is high.

Accompanying drawing explanation

Fig. 1 is structural principle block diagram of the present utility model;

Fig. 2 is hit trigger circuit schematic diagram.

In figure: 1, tested connector; 2, hit testing circuit; 3, hit trigger circuit; 4, flush bonding processor; 5, LCDs; 6, reset key; 7, page turning key.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

In view 1, dynamic hit tester, its agent structure comprises: tested connector 1, hit testing circuit 2, hit trigger circuit 3, flush bonding processor 4, LCDs 5, reset key 6 and page turning key 7, it is characterized in that, hit testing circuit 2 is connected with tested connector 1, for detecting tested connector 1 change in voltage, hit trigger circuit 3 respectively with hit testing circuit 2, flush bonding processor 4 connects, for receiving the hit control signal that hit testing circuit 2 sends, and send to flush bonding processor 4, flush bonding processor 4 respectively with hit testing circuit 2, hit trigger circuit 3, LCDs 5 connects, for analyzing and processing hit steering order and storage input signal, reset key 6 is connected with flush bonding processor 4, for removing the signal that flush bonding processor 4 stores, page turning key 7 is connected with flush bonding processor 4, the Circulating fibrocytes of data is shown for controlling liquid crystal display 5, the principle of work of this dynamic hit detection instrument is: hit testing circuit 2 is by detecting whether the instantaneous voltage of connector 1 is zero, judge whether tested connector 1 instant cut-off occurs, when hit testing circuit 2 detects that the instantaneous voltage of tested connector 1 equals zero, hit testing circuit 2 sends a hit detection signal to hit trigger circuit 3, produce a negative edge signal after hit trigger circuit 3 detect this signal and send to flush bonding processor 4, flush bonding processor 4 produces an interruption after capturing negative edge signal, hit testing circuit 2 starts to detect 14 road applied signal voltage sizes, flush bonding processor 4 starts timing, and store 14 road status input signals, when hit testing circuit 2 detects that the instantaneous voltage of connector 1 is non-vanishing, hit testing circuit 2 sends a hit end signal to flush bonding processor 4, informed embed formula processor 4 hit terminates, now flush bonding processor 4 stops timing, and Data Analysis Services is carried out to the input signal stored, the wink break time on testing result Ji Mei road is shown in LCDs 5, described LCDs 5 adopts LCD12864 LCD MODULE, every page of display 4 circuit-switched data, totally four pages, by page turning key 7, Circulating fibrocytes four page data, after once test terminates, the signal of flush bonding processor 4 storage is removed by reset key 6.

Above-mentioned hit trigger circuit 3 adopt 3 74HC21 chips to realize 14 road hit signals and trigger, its course of work as shown in Figure 2, 14 road hit signals are inputted with door by 44 inputs, rear class adds road 4 input and realizes 14 road signal phase and logics with door, when there is instant cut-off in tested connector 1, hit trigger circuit 3 level is by high step-down, produce a negative edge signal, informed embed formula processor 4 starts hit and detects, these hit trigger circuit, circuit structure is simple, stable performance, even if under extreme conditions (125 degrees Celsius), its reaction velocity also can reach 82ns.

Above-mentioned flush bonding processor 4 adopts STC12C5A60S2 processor.

Claims

1. dynamic hit detection instrument, it is characterized in that: hit testing circuit is connected with tested connector, hit trigger circuit are connected with hit testing circuit, flush bonding processor respectively, and flush bonding processor is connected with hit testing circuit, LCDs, reset key and page turning key respectively.

2. dynamic hit detection instrument according to claim 1, is characterized in that: hit trigger circuit are connected with hit testing circuit, flush bonding processor respectively, for receiving the hit control signal that hit testing circuit sends, and sends to flush bonding processor.

3. dynamic hit detection instrument according to claim 1, is characterized in that: flush bonding processor is connected with hit testing circuit, hit trigger circuit, LCDs respectively, for analyzing and processing hit steering order and storage input signal.

4. dynamic hit detection instrument according to claim 1, is characterized in that: hit trigger circuit adopt 3 74HC21 chips to realize 14 road hit signals and trigger.

5. dynamic hit detection instrument according to claim 1, is characterized in that: flush bonding processor adopts STC12C5A60S2 processor.