CN2209355Y - Computer operation terminal module board testing table - Google Patents
Computer operation terminal module board testing table Download PDFInfo
- Publication number
- CN2209355Y CN2209355Y CN 94228528 CN94228528U CN2209355Y CN 2209355 Y CN2209355 Y CN 2209355Y CN 94228528 CN94228528 CN 94228528 CN 94228528 U CN94228528 U CN 94228528U CN 2209355 Y CN2209355 Y CN 2209355Y
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- test
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- microcomputer
- interface
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- Expired - Fee Related
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Abstract
The utility model relates to a testing table which belongs to a testing device for a computer template and has the structure that the testing table and a microcomputer form a testing system. Connection is that a bus interface plate is inserted into a microcomputer expansion groove and is connected with an I/O interface plate for completing the logical signal transformation of a bus. The I/O interface plate is connected with an RS-232 interface of the microcomputer for completing the communication of the testing table with a host computer. Simultaneously, the I/O interface plate is connected with a keyboard control template to be tested, a switch template and a keyboard template for completing the test of a template to be tested. The utility model has the advantage of simple structure, and is connected with the microcomputer. Special software is used for automatic test to a terminal.
Description
The utility model belongs to the computer mould board test device.
At present computing machine is widely used in national defence or various industry, scientific research, production division, even spreads to family, is a kind of indispensable aid in the life in modern times, and its production and debugging will be the key issues that computing machine puts into production.The computer organization complexity, the technical requirement height, there is certain theoretical foundation just can grasp, computing machine is by controller, memory and terminal device are formed, wherein operating terminal is by CRT monitor and interface model, keyboard template, the Keyboard Control template, compositions such as switch template, these templates can be brought various quality problems unavoidably in production process, defective as printed panel, solder failure, component aging, all kinds faults such as component wear, must be with special testing tool to the inspection of this fault, general testing tool costs an arm and a leg at present, and accuracy of fault diagnosis is not high, makes troubles to computing machine production debugging.
For solving above computing machine production terminal test problem, the purpose of this utility model provides a kind of computer operation terminal template test platform, utilizes computing machine and special software to realize the automatic test problem of fault of terminal template.
Structural design of the present utility model is achieved in that its structure of this device computer terminal template test platform is by a block I/O interface board, a bus interface board, two fixed power source are formed (as shown in Figure 2), test board needs and a microcomputer composition test macro during use, its connection is that bus interface board inserts in the microcomputer expansion slot, and link to each other with the I/O interface board, finish bus logic signal transformation, the RS-232 interface of I/O interface board and microcomputer is joined, finish communicating by letter of test board and main frame, while I/O interface board and tested Keyboard Control template, switch template, keyboard template joins, and finishes the signal controlling to tested template.
Wherein the circuit diagram of bus interface board is by shown in Figure 4, and the bus address that microcomputer sends connects with bus buffer U6, U7, and impact damper U6, U7 give decoding logic circuit U4, U5, U8, U9, U10, join through impact damper U2, U3 and I/O interface board again; I/O interface board circuit diagram as shown in Figure 5, the output of bus interface circuit inputs to the input of I/O interface board, be connected to transmitter U9, U10 through driver U17, U18 output, transmitter U9, U10 are made up of 74LS374 and 74LS245, the I/O interface board connects tri-state control circuit U19, U20 simultaneously, the output of U19, U20 is connected to data communication interface circuit RS-232, and transmitter U9, U10 are connected to tested test plate (panel) after signal transformation, and the I/O driving circuit of tested test plate (panel) has:
1.CRT interface circuit is made of U9, U10;
2. connect with the communication interface path of microcomputer, constitute (as shown in Figure 3) by U21～U25;
3. Keyboard Control plate path.
Test board is made up of casing and control panel, and test board control panel upper left side is equipped with LED and is shown, test board is equipped with two cover power supplys, and a cover uses for test board oneself, for test board provides+5V, and three kinds of operating voltage of ± 12V; Another set ofly be+5V for tested test plate (panel) provides power supply, ± 12V ,+four kinds of voltages of 24V, the various voltages of Board Under Test all can be on LED according to selecting the display voltage reading ,+5V is provided with regulator potentiometer and draws inclined to one side use for the power supply of Board Under Test.A reset button is arranged above the test board power switch, and initially powering on needs by this reset test platform system, and button and waver are equipped with in the test board right side, is used for functional test and adopts.
This machine is furnished with special testing software, supplies with microcomputer and uses with test and tracing trouble.
Structure of the present utility model is provided by following examples and accompanying drawing.
Fig. 1 is computer operation terminal template test platform construction profile figure;
Fig. 2 is a computer operation terminal template test platform controlling party block diagram;
Fig. 3 connects electrical schematic diagram for computer operation terminal template test platform with the microcomputer communication interface;
Fig. 4 is a computer operation terminal template test platform bus interface board electrical schematic diagram;
Fig. 5 is a computer operation terminal template test platform I/O interface board electrical schematic diagram.
The test philosophy of this test board: this test board is formed test macro with microcomputer, by programming, test board is the RS-232 signal that tested test plate (panel) needs with the RS-232 conversion of signals of microcomputer, simultaneously send various command signals to tested test plate (panel), after receiving orders, carries out Board Under Test function corresponding, answer current working state information and data in the back that disposes to microcomputer, whether test board is by coming the tested test plate (panel) each several part of analysis and judgement correct to the data that reclaim.This kind test is dynamic function test, has separately independently function by the each several part of operating terminal, each several part can be carried out functional block and divide, and adopts the function comparision testing, and with test data and as can be known correct data relatively, thereby fault can be located during test.This test board also provides a testing service software, and this software is to use the BASiC language compilation, adopts menu mode, and the user can finish corresponding test event according to menu prompt.
This test board controlling party block diagram as shown in Figure 2, middle I/O interface board, power supply 1,2 and bus interface board are the circuit structure of this test board, bus interface board connects with microcomputer, the I/O interface board connects with the microcomputer RS-232 interface, and the I/O interface board connects with the Keyboard Control plate simultaneously.
The advantage of the utility model: circuit structure is simple, directly connects test with microcomputer, and test speed is fast, and fault diagnosis is accurate, and is easy to install, is fit to the automatic production line follow-on test and uses.
Claims (5)
1, a kind of computer operation terminal template test platform, it is characterized in that this test board is made up of a block I/O interface board, a bus interface board, two fixed power source, test board needs and microcomputer is formed test macro, its connection is that bus interface board inserts in the microcomputer expansion slot, and link to each other with the I/O interface board, the RS-232 interface of I/O interface board and microcomputer is joined, and simultaneously I/O interface board and tested Keyboard Control template, switch template, keyboard template join.
2, by the described terminal template test platform of claim 1, the circuit that it is characterized in that bus interface board is connected with bus buffer U6, U7 by the bus address that microcomputer sends, impact damper U6, U7 give decoding logic circuit U4, U5, U8, U9, U10, join through the I/O of impact damper U2, U3 and microcomputer interface board again.
3, by the described template test platform of claim 1, it is characterized in that the output of bus interface circuit inputs to the input of I/O interface board, be connected to transmitter U9, U10 through driver U17, U18 output, transmitter U9, U10 are made up of 74LS374 and 74LS245, the I/O interface board connects tri-state control circuit U19, U20 simultaneously, the output of U19, U20 is connected to data communication interface circuit RS-232, and transmitter U9, U10 are connected to tested test plate (panel) after signal transformation.
4, by claim 1,3 described template test platforms, it is characterized in that tested drive circuit has:
1) the CRT interface circuit is made of U9, U10;
2) connect with the communication interface path of microcomputer, constitute by U21～U25;
3) Keyboard Control plate path.
5, by the described template test platform of claim 1, it is characterized in that test board is equipped with two cover power supplys, a cover uses for test board oneself, for test board provides+5V, three kinds of operating voltage of ± 12V; Another set ofly for tested test plate (panel) provides power supply be+5V, ± 12V ,+four kinds of voltages of 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228528 CN2209355Y (en) | 1994-05-10 | 1994-05-10 | Computer operation terminal module board testing table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94228528 CN2209355Y (en) | 1994-05-10 | 1994-05-10 | Computer operation terminal module board testing table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2209355Y true CN2209355Y (en) | 1995-10-04 |
Family
ID=33841052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94228528 Expired - Fee Related CN2209355Y (en) | 1994-05-10 | 1994-05-10 | Computer operation terminal module board testing table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2209355Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391231A (en) * | 2021-06-10 | 2021-09-14 | 西安微电子技术研究所 | Control circuit for improving module testing efficiency |
-
1994
- 1994-05-10 CN CN 94228528 patent/CN2209355Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391231A (en) * | 2021-06-10 | 2021-09-14 | 西安微电子技术研究所 | Control circuit for improving module testing efficiency |
| CN113391231B (en) * | 2021-06-10 | 2023-09-29 | 西安微电子技术研究所 | Control circuit for improving module test efficiency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |