CN2378737Y - Electric circuit board automatic testing and signal waveform contrast equipment - Google Patents
Electric circuit board automatic testing and signal waveform contrast equipment Download PDFInfo
- Publication number
- CN2378737Y CN2378737Y CN 99207666 CN99207666U CN2378737Y CN 2378737 Y CN2378737 Y CN 2378737Y CN 99207666 CN99207666 CN 99207666 CN 99207666 U CN99207666 U CN 99207666U CN 2378737 Y CN2378737 Y CN 2378737Y
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- circuit board
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- test
- signal waveform
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Abstract
The utility model relates to an electric circuit board automatic testing and signal waveform contrast device. The inner part of a machine body is provided with a central processing unit, the facade of the machine body is provided with a setting zone which is provided with a plurality of key switches. The setting zone can be provided with various testing procedures and contents which are controlled by the central processing unit to drive an externally connected simulation device to change and adjust a signal, the signal is transferred and guided to an output terminal board through a relay switch at an exchange zone and then is externally connected with a test desk of a circuit board to carry out the testing work of the circuit board, and the tested result is displayed on an oscilloscope in waveform for contrast. A computer can be used for signal analysis and interpretation to determine whether the circuit board is normal or abnormal.
Description
The utility model relates to a kind of testing apparatus, relates in particular to a kind of circuit board test and signal waveform comparative apparatus automatically.
The variation that becomes of healing of growing along with semiconductor technology, the function of electronic product, its employed circuit board is also accurate further.Therefore, circuit board is finished after the welding job at the assembling electronic component, and it is more and more heavy that the test job of circuit board also seems, also seems more and more important simultaneously, and, more find the bad problem points of circuit board morning, just more can cost-effective expenditure.
The test mode of the circuit board of commonly using, be with various test conditions, utilize instrument or signal generator, export the test point of predefined signal source,, carry out test job again and again by site work person or tester to circuit board, and, after each test event is finished, must relend the power of helping others, switch to next test event.So, carry out every test job again and again, not only need to expend great amount of manpower and time, various numerous and diverse content measurements of while, operation by personnel, occur various operational mistakes again easily, not only be difficult to reach the requirement of test job, also may cause the delay of work flow on the contrary.
The purpose of this utility model is, a kind of circuit board test and signal waveform comparative apparatus automatically are provided, and it is more convenient for the test job that makes circuit board, practicable and accurate, and can shorten the time of test job, and reduces the error rate of test process.
The purpose of this utility model is realized by following technical scheme.
A kind of circuit board is test and signal waveform comparative apparatus automatically, it is characterized in that, it is to be provided with CPU (central processing unit) as the major control maincenter at an internal body, the body front is provided with the setting district, the setting district is provided with several keyswitches, these several keyswitches are connected with the working storage and the cassette EEPROM of CPU (central processing unit), CPU (central processing unit) is connected with the relay cohort of the set exchange area of internal body again, various testing procedures and content that the setting district will set, be stored in the working storage and cassette EEPROM of CPU (central processing unit), relend operational order by action button, by CPU (central processing unit) output control signal, the relay cohort that drives the set exchange area of internal body is carried out action, to introduce the test signal of external testing tool or analog machine, the terminal box terminal strip set via the body side connects, with the circuit board of signal converting to the test board, to carry out the test job of circuit board, again that each test point is measured signal waveform, be sent to oscillograph and carry out the comparison of wave shape detection, or transfer to computer.Carry out the analysis interpretation of signal waveform, to reach the purpose of automatic testing circuit plate.
The purpose of this utility model can also further realize by following technical measures.
Aforesaid circuit board is test and signal waveform comparative apparatus automatically, the setting value keyswitch of its setting district, can be used to set the required Measuring Time setting of each testing procedure, and outer periphery equipment can be set according to the amount at quarter of required analog drive signal.
Aforesaid circuit board is test and signal waveform comparative apparatus automatically, and its setting district is provided with the keyswitch that can be used to set various testing procedures in addition, makes the relay cohort of exchange area carry out the on-off action of setting.
Aforesaid circuit board is test and signal waveform comparative apparatus automatically, and the keyswitch of its setting district can serve as and jump the slightly setting of function, so as to the some testing procedures of temporary transient omission.
Aforesaid circuit board is test and signal waveform comparative apparatus automatically, and its body back side is provided with external computer and uses the communication port, and this communication port can connect outside hand held Write, PC.To be engaged in planning setting work.
Aforesaid circuit board is test and signal waveform comparative apparatus automatically, its internal body is provided with match circuit, this match circuit includes decay match circuit and auto-gain circuit, can be with the signal of testing circuit board gained, via decay match circuit or auto-gain circuit, adjusted the signal waveform that becomes suitable size, and with automatic gain attenuator circuit gained multiplying power, be sent in computer instrument or the oscillograph display waveform and carry out comparison of wave shape.
Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is a rear view of the present utility model.
Fig. 4 is the utility model and the calcspar that is connected of external equipment.
Fig. 5 is the circuit diagram of the utility model and external equipment.
Fig. 6 is a main program flow chart of the present utility model.
Fig. 7 is the secondary program flow diagram of interruption of the present utility model ().
Fig. 8 is the secondary program flow diagram of interruption of the present utility model (two).
Now see also each accompanying drawing, preferred embodiment of the present utility model be described in detail as follows:
At first please read shown in Fig. 1,2,3, the utility model is provided with CPU (central processing unit) (1), exchange area (2), match circuit (3) at an internal body.
The front of body is provided with power switch (4), testing procedure display (5), setting district (6), action button (7), ammeter indicator (8), liquid crystal oscillograph (9), power monitoring lamp members such as (10).
The back side of body be provided with power lead and plug (11), no fuse involution switch (12), fuse (13), external fictitious load with terminal row (14), external function signal generator with BNC connector connector (15), external oscillograph with connector (16), external computer with communication port (17), peripheral equipment with supply socket (18), line traffic control switch with socket members such as (19).
The side of body is provided with terminal box terminal strip (20).
CPU (central processing unit) (1) is administered all control programs, and its program includes a master routine and two secondary programs of interruption, sees also each program flow diagram shown in Fig. 6,7,8.After the start, CPU (central processing unit) (1) is removed the data of its inner all working storages immediately and is made zero, and original data that stores of setting among again that it is the outside cassette EEPROM is read in CPU (central processing unit) (1) temporary; Simultaneously, set these two of declarations and interrupt secondary program, one interrupts the data state (as shown in Figure 7) that secondary program is responsible for the rule timer and is regularly upgraded the I/O port, and another interrupts secondary program is responsible for tandem communication pattern and communication protocol (as shown in Figure 8).
CPU (central processing unit) (1) can receive the input setting command of setting district (6) in addition, and is stored; The setting value keyswitch of setting district (6), can be used to set the required Measuring Time setting of each testing procedure, the swap status of relay, and the amount at quarter of the required analog drive signal of outer periphery equipment sets, for example: frequency converter, the function generator of more vairable, the linear adjustment equipment of alternating voltage, the linear adjustment equipment of fictitious load etc.; In addition, setting district (6) be provided with in addition several 8bit on the off keyswitch, can be used to set various testing procedures, make the relay cohort of exchange area (2) carry out on the setting of off state, maybe can serve as and jump the slightly setting of function, with the some testing procedures of temporary transient omission, can reach elasticity and adjust various testing procedures.
In addition, the set-up function of setting district (6) also can connect outside hand held Write or PC and be engaged in planning setting work by external computer with communication port (17).
Finish after planning sets according to step with the computer that connected of communication port (17) according to setting district (6) or via external computer, all testing procedures, testing process, data such as test condition, all be stored in simultaneously in the working storage and cassette EEPROM of CPU (central processing unit) (1), again according to the next action button of action button (7), CPU (central processing unit) (1) can be exported corresponding control signal according to step, the relay cohort that drives exchange area (2) is carried out action, introduce the test signal of external testing tool or analog machine again, be forwarded to test board (21) via terminal box terminal strip (20) again, and the circuit board (22) on the test board (21) is carried out test job.
Match circuit (3) includes decay match circuit and auto-gain circuit; it is with the obtained back-signalling of testing circuit board (22); look the intensity size of back-signalling; become the waveform signal of suitable size via decay match circuit or auto-gain circuit adjust; transfer to again in the oscillograph (9); by oscillograph (9) display waveform, whether serve as normal or unusual with testing circuit plate (22).
See also shown in Figure 7ly, the power switch (4) in body of the present utility model front is responsible for the power connection or the cut-out of control body and peripheral equipment.
Testing procedure display (5) can show the sequence number of each testing procedure in order, and the utility model can be set the testing procedure more than 16 altogether.
Setting district (6) is respectively arranged with some various keyswitches, can be used to set the amount setting at quarter of the required analog drive signal of testing procedure, Measuring Time and various outer periphery equipment or serves as the slightly setting of function of temporary transient jumping.
Action button (7) is to be provided with some pushbutton switches, stops (Stop), next step (Next), replacement functions such as (Reset) to control respectively.
Ammeter district (8) can be provided with on demand, in respect of the digital electric meter of various liquid crystal displays, for example: voltage table, reometer, ohmmeter, frequency meter, watt meter ... Deng, be used for showing the numerical value of various signals.
Oscillograph (9) is to be used for display circuit board (22) through after the test, and whether the signal waveform of each test point gained serves as normal or unusual with testing circuit plate (22).The utility model can be on demand, with the signal waveform of test gained, moves to be connected to and make waveform on the stronger oscillograph of external function and contrast testing circuit plate (22) functional characteristic automatically.
Power monitoring lamp (10) is the pilot lamp cohort that is used for showing various testing power supplies, and when pilot lamp extinguished, the corresponding fuse (13) that expression is arranged on back side of shell was fused, in advance powered-down switch (4), row replacing fuse (13) again.
See also shown in Figure 3, the power lead at the body of the present utility model back side and plug (11), be responsible for drawing connect the conduction power supply enter body.
No fuse involution switch (12) is as the protective effect of line short, when tested circuit board (22) when short circuit phenomenon is arranged, no fuse involution switch (12) but escape avoid being subjected to the attack of short-circuit current and damage with protection circuit.
Fuse (13) is as the protective effect of circuit abnormal current, and when unusual big electric current took place circuit, fuse (13) can be fused, and avoids being subjected to the attack of unusual big electric current and damages with protection circuit.In addition, by the meltdown of the fuse (13) of corresponding circuit, also can be used as the bad problem points place of judging tested circuit board (22).
External fictitious load can make this external resistance box or fictitious load for connecting outside resistance box or fictitious load with terminal row (14), can be subjected to the control of CPU (central processing unit) (1), and carry out the function of fictitious load test.
External function signal generator can be for connecting outside function signal generator with BNC connector connector (15), by CPU (central processing unit) (1) output signal, may command function signal generator is exported various function signal waveforms, draw via the relay of exchange area (2) exchange and to be connected to test board (21), so that circuit board (22) is carried out test job.
External oscillograph can be used for being connected to other peripheral equipments, to inspect signal waveform for connecting the stronger oscillograph of external function with connector (16).
External computer can be for connecting outside hand held Write or PC with communication port (17), by hand held Write or the planning of PC may command and set the function of each step.
The line traffic control switch can by the operation of line traffic control switch, be used for extending to other places, so that control flexibly for connecting outside line traffic control switch grafting usefulness with socket (19).
Terminal box terminal strip (20) is to be used for connecting body of the present utility model and test board (21), with with the utility model body and various external instrument and equipment, the test signal contact that sets transfers to test board (21), so that the circuit board (22) on the test board (21) is carried out test job.
Test board (21) can be placed on it for circuit board (22) to be tested, and the p-wire pass is connected to circuit board (22), in order to circuit board (22) is carried out test job.
See also shown in Fig. 4,5,6,7, below be described as follows with regard to testing process of the present utility model and method of operating:
One, after turning on the power switch (4) start, testing procedure display (5) shows that immediately the testing procedure sequence number is 00, also is readiness.
Two, next step (Next) function key of push button (7), the utility model is promptly carried out each testing procedure automatically in order, and testing procedure display (5) can automatically be shown the sequence number of each testing procedure by 01-16; In the middle of some some testing procedures be set to when jumping slightly function, the testing procedure of this jumpings summary promptly was omitted and did not carry out test.
Three, each testing procedure is according to the test duration that sets, and carry out the stop test action of this step, and the alternately period between each testing procedure, all test actions of the present utility model and simulating signal, all relay cohorts that comprise exchange area (2), all remove action 0.5 second,, make the test signal between each testing procedure confusion phenomena can not take place in order to separating and each testing procedure of involution.
Four, the utility model automatically performs each testing procedure in order, show that to testing procedure display (5) sequence number is 16, that is after complete last testing procedure, the utility model stops automatically promptly.
Five, carry out in the middle of the test, if detect the circuit board (22) of test when bad phenomenon is arranged, but replacement (Reset) function key of push button (7), the utility model can stop all test actions immediately, all relay cohorts of exchange area (2) also stop everything with involution, are 00 readiness and testing procedure display (5) also is returned to sequence number.Taking off bad circuit board (22) afterwards, changing the new circuit board to be tested (22) of another piece, next step (Next) function key of push button (7) can automatically perform test action more again again.
Six, carry out in the middle of the test, if push button (7) stop (Stop) function key, this testing procedure of then carrying out, its test duration and testing procedure can suspend, stop (Stop) function key up to relieving, test duration and testing procedure just can continue progression again, and carry out test action automatically in order.
In sum, the utility model is the major control maincenter by CPU (central processing unit) (1), and be engaged in planning setting work by setting district (6) or via external computer, to set various testing procedures and content, produce the simulation modulating signal, drive external analog equipment, relend by the relay switch of exchange area (2) and carry out exercises, signal converting is guided to circuit board (22) on the test board (21), so that circuit board (22) is carried out test job.With measured result, utilize oscillograph (9) to carry out comparison of wave shape again, or utilize computer to carry out the analysis interpretation of signal waveform,, have the effect of carrying out the robotization quality control to find the bad problem points of circuit board ahead of time.It can have novelty, creativeness and practicality for the usability of industry really, meets novel patent requirement, files an application in accordance with the law.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1, a kind of circuit board is test and signal waveform comparative apparatus automatically, it is characterized in that, it is to be provided with CPU (central processing unit) as the major control maincenter at an internal body, the body front is provided with the setting district, the setting district is provided with several keyswitches, these several keyswitches are connected with the working storage and the cassette EEPROM of CPU (central processing unit), CPU (central processing unit) is connected with the relay cohort of the set exchange area of internal body again, various testing procedures and content that the setting district will set, be stored in the working storage and cassette EEPROM of CPU (central processing unit), by CPU (central processing unit) output control signal, the relay cohort that drives the set exchange area of internal body is carried out action, to introduce the test signal of external testing tool or analog machine, connect via the set terminal box terminal strip in body side, with the circuit board of signal converting to the test board.
2, circuit board according to claim 1 is tested and the signal waveform comparative apparatus automatically, it is characterized in that, the setting value keyswitch of its setting district, can be used to set the required Measuring Time setting of each testing procedure, and outer periphery equipment can be set according to the amount at quarter of required analog drive signal.
3, circuit board according to claim 1 is tested and the signal waveform comparative apparatus automatically, it is characterized in that its setting district is provided with the keyswitch that can be used to set various testing procedures in addition.
4, circuit board according to claim 1 is tested and the signal waveform comparative apparatus automatically, it is characterized in that, its body back side is provided with external computer and uses the communication port, and this communication port can connect outside hand held Write, PC.
5, circuit board according to claim 1 is tested and the signal waveform comparative apparatus automatically, it is characterized in that, its internal body is provided with match circuit, this match circuit includes decay match circuit and auto-gain circuit, the signal of testing circuit board gained via decay match circuit or auto-gain circuit, can be adjusted the signal waveform that becomes suitable size, and, be sent in computer instrument or the oscillograph with automatic gain attenuator circuit gained multiplying power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99207666 CN2378737Y (en) | 1999-04-05 | 1999-04-05 | Electric circuit board automatic testing and signal waveform contrast equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99207666 CN2378737Y (en) | 1999-04-05 | 1999-04-05 | Electric circuit board automatic testing and signal waveform contrast equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2378737Y true CN2378737Y (en) | 2000-05-17 |
Family
ID=34001592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99207666 Expired - Fee Related CN2378737Y (en) | 1999-04-05 | 1999-04-05 | Electric circuit board automatic testing and signal waveform contrast equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2378737Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297044C (en) * | 2001-06-15 | 2007-01-24 | 矢崎总业株式会社 | Detection method for terminal crimping state |
| CN101923347A (en) * | 2009-06-16 | 2010-12-22 | 樱花卫厨（中国）股份有限公司 | Electrical control system program intelligent detection equipment and control method thereof |
| CN101413967B (en) * | 2007-10-15 | 2011-06-15 | 英业达股份有限公司 | Method for controlling automatic measurement of oscilloscope |
-
1999
- 1999-04-05 CN CN 99207666 patent/CN2378737Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297044C (en) * | 2001-06-15 | 2007-01-24 | 矢崎总业株式会社 | Detection method for terminal crimping state |
| CN101413967B (en) * | 2007-10-15 | 2011-06-15 | 英业达股份有限公司 | Method for controlling automatic measurement of oscilloscope |
| CN101923347A (en) * | 2009-06-16 | 2010-12-22 | 樱花卫厨（中国）股份有限公司 | Electrical control system program intelligent detection equipment and control method thereof |
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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 |