CN204203422U - A kind of accelerometer circuit board ATE (automatic test equipment) - Google Patents
A kind of accelerometer circuit board ATE (automatic test equipment) Download PDFInfo
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- CN204203422U CN204203422U CN201420703373.0U CN201420703373U CN204203422U CN 204203422 U CN204203422 U CN 204203422U CN 201420703373 U CN201420703373 U CN 201420703373U CN 204203422 U CN204203422 U CN 204203422U
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- matrix switch
- computer system
- industrial computer
- accelerometer
- data acquisition
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Abstract
The utility model discloses a kind of accelerometer circuit board ATE (automatic test equipment), comprise rack and be integrated in the accelerometer test macro in rack, described accelerometer test macro comprises data acquisition system (DAS), fixture, matrix switch and industrial computer system, described data acquisition system (DAS) is by matrix switch jockey, described industrial computer system is connection data acquisition system and matrix switch respectively, described matrix switch jockey; Needed for solution prior art, utilize the ATE (automatic test equipment) with automatic test function to carry out performance test to accelerometer circuit board, avoid and adopt motion rotating table to test, namely reduce testing cost, improve testing efficiency again, effectively ensure measuring accuracy and stability.
Description
Technical field
The utility model relates to field tests, specifically, is a kind of accelerometer circuit board ATE (automatic test equipment).
Background technology
Accelerometer, is the instrument measuring carrier linear acceleration, is made up of Detection job (also claiming sensitive-mass), supporting, potentiometer, spring, damper and housing.
The supported constraint of Detection job can only be moved along an axis, and this axle is often called input shaft or sensitive axes.When instrument housing does accelerated motion along with carrier along sensitive axes direction, according to Newton's law, the motion state that the Detection job with certain inertia tries hard to keep it original is constant.To relative motion be produced between it and housing, make camber of spring, so Detection job accelerated motion thereupon under spring force.When the inertial force produced when spring force and Detection job accelerated motion balances each other, just no longer include relative motion between Detection job and housing, at this moment the distortion reflection of spring is by the size of measuring acceleration.Potentiometer is converted to electric signal as displacement sensor acceleration signal, for output.Accelerometer is the oscillatory system of a single-degree-of-freedom in essence, and damper must be adopted to improve the dynamic quality of system.
Accelerometer, it is the sensor being widely used in various motion control and perception, accelerometer circuit board is critical component wherein, and the precision and stability of accelerometer is its important indicator, must carry out the test of precision and stability when producing accelerometer to each accelerometer circuit board.
Utility model content
The purpose of this utility model is to provide a kind of accelerometer circuit board ATE (automatic test equipment), needed for solution prior art, the ATE (automatic test equipment) with automatic test function is utilized to carry out performance test to accelerometer circuit board, avoid and adopt motion rotating table to test, namely testing cost is reduced, improve testing efficiency again, effectively ensure measuring accuracy and stability.
The utility model is achieved through the following technical solutions: a kind of accelerometer circuit board ATE (automatic test equipment), comprise rack and be integrated in the accelerometer test macro in rack, described accelerometer test macro comprises data acquisition system (DAS), fixture, matrix switch and industrial computer system, described data acquisition system (DAS) is by matrix switch jockey, described industrial computer system is connection data acquisition system and matrix switch respectively, described matrix switch jockey.
Further, for realizing the utility model better, described data acquisition system (DAS) comprises programmable power supply, counter, constant current source, oscillograph, multimeter, frequency marking, and described programmable power supply connects industrial computer system and matrix switch respectively; Described counter connects industrial computer system and matrix switch respectively; Described constant current source connects industrial computer system and matrix switch respectively; Described oscillograph connects industrial computer system and matrix switch respectively; Described multimeter connects industrial computer system and matrix switch respectively; Described frequency marking connects industrial control system and matrix switch respectively.
Further, for better realizing the utility model, industrial computer system can utilize network communication mode to manage data acquisition system (DAS), be arranged to following structure especially: also comprise the network switch and GPIB gateway, described industrial computer system interconnection network switch, the described network switch connects GPIB gateway, and described GPIB gateway connects linkage counter, constant current source, oscillograph, multimeter and frequency marking respectively.
Further, for realizing the utility model better, RS232 data protocol between described industrial computer system and programmable power supply, is adopted to communicate to connect.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model solves needed for prior art, the ATE (automatic test equipment) with automatic test function is utilized to carry out performance test to accelerometer circuit board, avoid and adopt motion rotating table to test, namely testing cost is reduced, improve testing efficiency again, effectively ensure measuring accuracy and stability.
(2) the utility model can make the communication between data acquisition system (DAS) and industrial computer system, fixture be independent of each other by the application of matrix switch, stability when effective guarantee the utility model is tested in use and degree of accuracy.
(3) the utility model is effectively in conjunction with manual test pattern and automatic test pattern, makes the utility model to test under conventional manual pattern and can test in automatic mode, meets needed for different test man.
(4) the utility model can complete such as accelerometer output circuit constant current source output current inspection, the inspection of accelerometer output circuit constant current source temperature coefficient, the test of accelerometer output circuit constant current source temperature coefficient stability test, the accelerometer output circuit linearity, the test of accelerometer output circuit 4 hours output pulse stabilities, the functional test of accelerometer output circuit, accelerometer output circuit high temperature test, accelerometer output circuit low-temperature test.
(5) network switch described in the utility model and GPIB gateway can utilize GPIB communication pattern to carry out data communication to the various testing apparatuss in data acquisition system (DAS) under the communication pattern of TCP/IP.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1:
A kind of accelerometer circuit board ATE (automatic test equipment), as shown in Figure 1, comprise rack and be integrated in the accelerometer test macro in rack, described accelerometer test macro comprises data acquisition system (DAS), fixture, matrix switch and industrial computer system, described data acquisition system (DAS) is by matrix switch jockey, described industrial computer system is connection data acquisition system and matrix switch respectively, described matrix switch jockey.
Testing apparatus is made up of rack and the accelerometer test macro be integrated in rack, wherein industrial computer system is as control core, the facility information of energy Synthesis Data Collection System Based inside, automatically test instruction is sent, during use, fixture degree of will speed up meter is utilized to connect, fixture is connected with data acquisition system (DAS) by matrix switch, data acquisition system (DAS) connects with industrial computer system, tester is by operation industrial computer system, after the data command to be collected that industrial computer system sends, data acquisition system (DAS) gathers out from accelerometer by needing the data gathered by matrix switch, feed back in industrial computer system and process, thus reach the object of test automatically, alleviate the labour intensity of tester greatly, moreover, each test can be consistent in time with in data.
Wherein, matrix switch can effectively by various data distribution to be collected, make it be independent of each other, ensure its validity and real-time, the communication between data acquisition system (DAS) and industrial computer system, fixture can be made to be independent of each other by the application of matrix switch, stability when effective guarantee the utility model is tested in use and degree of accuracy.
Industrial computer system is when carrying out data processing; inevitably use software systems; and the software systems will applied in the utility model are the current techique in this area and association area in fact, in this utility model, do not relate to change and the protection of software systems.
Effectively in conjunction with manual test pattern and automatic test pattern, the utility model is made to test under conventional manual pattern and can test in automatic mode, meet needed for different test man, complete such as accelerometer output circuit constant current source output current inspection, accelerometer output circuit constant current source temperature coefficient checks, accelerometer output circuit constant current source temperature coefficient stability test, the accelerometer output circuit linearity is tested, accelerometer output circuit exports pulse stability test for 4 hours, the functional test of accelerometer output circuit, accelerometer output circuit high temperature test, accelerometer output circuit low-temperature test, needed for solution prior art, the ATE (automatic test equipment) with automatic test function is utilized to carry out performance test to accelerometer circuit board, avoid and adopt motion rotating table to test, namely testing cost is reduced, improve testing efficiency again, effective guarantee measuring accuracy and stability.
Embodiment 2:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further, for better realizing the utility model, as shown in Figure 1, industrial computer system can utilize network communication mode to manage data acquisition system (DAS), is arranged to following structure especially: also comprise the network switch and GPIB gateway, described industrial computer system interconnection network switch, the described network switch connects GPIB gateway, described GPIB gateway connection data acquisition system.
In use, the data of collection are fed back to industrial computer system by GPIB gateway through the network switch by data acquisition system (DAS), and when needs image data, industrial computer system sends image data instruction and utilizes the instrument and equipment of the network switch in GPIB gateway control data acquisition system (DAS) to carry out data acquisition to accelerometer.
GPIB, general purpose interface bus, the data line interface for multiple instrument, testing apparatus is integrated and connected, and facilitates industrial computer system with the data communication of various instrument, testing apparatus.
Embodiment 3:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 1, further, for realizing the utility model better, as shown in Figure 1, described industrial computer system with adopt RS232 communication protocol to be connected between data acquisition system (DAS) to communicate.
Embodiment 4:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 1, further, for realizing the utility model better, as shown in Figure 1, described data acquisition system (DAS) comprises programmable power supply, counter, constant current source, oscillograph, multimeter, frequency marking, and described programmable power supply connects industrial computer system and matrix switch respectively; Described counter connects industrial computer system and matrix switch respectively; Described constant current source connects industrial computer system and matrix switch respectively; Described oscillograph connects industrial computer system and matrix switch respectively; Described multimeter connects industrial computer system and matrix switch respectively; Described frequency marking connects industrial control system and matrix switch respectively.
In use, accelerometer is connected with frequency marking through the same programmable power supply of fixture, counter, constant current source, oscillograph, multimeter, counter, constant current source, oscillograph, multimeter, frequency marking are connected with GPIB gateway by GPIB (general purpose interface bus), GPIB gateway is connected with industrial computer system by programme-controlled exchange, programmable power supply divides 3 passages to export, be respectively 0 ~+32v, 0 ~-32v, 3.3/5v, after industrial computer system sends acquisition instructions, oscillograph gathers accelerometer output waveform; The electric current of multimeter testing acceleration meter and voltage; Counter will carry out pulse test; Frequency marking exports 16KHz and 256KHz2 road frequency; Constant current source, exports 1 road electric current, ± 1mA ~ ± 30mA, and will complete the test of accelerometer output circuit constant current source temperature coefficient, accelerometer output circuit constant current source temperature coefficient stability test, accelerometer output circuit constant current source output current is tested.
Embodiment 5:
The present embodiment is at the enterprising one-step optimization in the basis of above-described embodiment, further, for realizing the utility model better, as shown in Figure 1, described industrial computer system interconnection network switch, the described network switch connects GPIB gateway, described GPIB gateway is linkage counter, constant current source, oscillograph, multimeter and frequency marking respectively, and the described network switch and GPIB gateway can utilize GPIB communication pattern to carry out data communication to the various testing apparatuss in data acquisition system (DAS) under the communication pattern of TCP/IP.
Embodiment 6:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 4, further, for realizing the utility model better, as shown in Figure 1, adopts RS232 data protocol to communicate to connect between described industrial computer system and programmable power supply.
Embodiment 7:
The present embodiment is at the enterprising one-step optimization in the basis of embodiment 4, further, for realizing the utility model better, as shown in Figure 1, adopt tcp/ip communication agreement to be connected between the described network switch with GPIB gateway to communicate, described GPIB gateway and counter, constant current source, oscillograph, adopt GPIB communication protocol to be connected between multimeter and frequency marking to communicate.
Embodiment 8:
The present embodiment is a kind of prioritization scheme, as shown in Figure 1, comprise rack and be integrated in the accelerometer test macro in rack, described accelerometer test macro comprises data acquisition system (DAS), fixture, matrix switch and industrial computer system, described data acquisition system (DAS) is by matrix switch jockey, described industrial computer system is connection data acquisition system and matrix switch respectively, described matrix switch jockey; Described data acquisition system (DAS) comprises programmable power supply, counter, constant current source, oscillograph, multimeter, frequency marking, and described programmable power supply connects industrial computer system and matrix switch respectively; Described counter connects industrial computer system and matrix switch respectively; Described constant current source connects industrial computer system and matrix switch respectively; Described oscillograph connects industrial computer system and matrix switch respectively; Described multimeter connects industrial computer system and matrix switch respectively; Described frequency marking connects industrial control system and matrix switch respectively; Also comprise the network switch and GPIB gateway, described industrial computer system interconnection network switch, the described network switch connects GPIB gateway, described GPIB gateway is linkage counter, constant current source, oscillograph, multimeter and frequency marking respectively, and the described network switch and GPIB gateway can utilize GPIB communication pattern to carry out data communication to the various testing apparatuss in data acquisition system (DAS) under the communication pattern of TCP/IP; Described industrial computer system with adopt RS232 communication protocol to be connected between data acquisition system (DAS) to communicate.
Matrix switch forms by organizing switch more, has following features:
8 (OK) × 32 (row) two-wire relay matrix switches;
Signal differential (two-wire 2FORM C type relay) input and output;
Integrated level is high, modular design, easily extensible passage;
Anti-interference is good;
Easy to use;
Control mode: RS-232 communicates;
Relay performance index:
Relay types: 2Form C;
Relay initial contact resistance: 100m Ω (maximum);
Specified contact capacity: 1A/30VDC or 0.3A/125VAC (ohmic load);
Maximum switching voltage: 110VDC, 125VAC;
Maximum switching current: 1A;
Maximum contact capacity: 30W, 37.5VA (ohmic load);
Relay power consumption: 140mW;
Relay mechanical life: 5 × 107;
Relay electrical endurance: 1 × 105,1 × 105 (ohmic load);
Insulation resistance: 1 × 109 (ohmic load);
Relay-operating time: 4mS (maximum), 2mS (typical case);
Relay release time: 4mS (maximum), 2mS (typical case).
When accelerometer output circuit constant current source temperature coefficient checks:
Normal temperature Tc is energized 45 minute hands, test two-way constant current source output valve;
High temperature 55 ± 2 DEG C, be energized 45 minute hands, test two-way constant current source output valve
Computing formula is as follows:
Temperature coefficient α=│ (IHG-IHC)/((IHC* (TH-Tc)) │
IHC---constant current source output current mA under normal temperature
IHG---high temperature 55 ± 2 DEG C, be energized 45 minute hand constant current source output current mA
Tc---normal temperature temperature, DEG C
TH---high-temperature temperature, DEG C
Accelerometer output circuit constant current source temperature coefficient stability test:
High temperature 55 ± 2 DEG C, be energized 45 minute hands, and test two-way constant current source output valve, once, test data is no less than 20 groups in test in every 10 minutes.
Stability test computing method
high temperature 55 ± 2 DEG C of constant current sources export mean value
σ: 20 groups export data mean square deviation.
The following test function of accelerometer can be used for but be not limited only to this:
Accelerometer output circuit constant current source output current checks;
Accelerometer output circuit constant current source temperature coefficient checks;
Accelerometer output circuit constant current source temperature coefficient stability test;
The accelerometer output circuit linearity is tested;
Accelerometer output circuit exports pulse stability test for 4 hours;
The functional test of accelerometer output circuit;
Accelerometer output circuit high temperature test;
Accelerometer output circuit low-temperature test.
The utility model solves needed for prior art, utilize the ATE (automatic test equipment) with automatic test function to carry out performance test to accelerometer circuit board, avoid and adopt motion rotating table to test, namely reduce testing cost, improve testing efficiency again, effectively ensure measuring accuracy and stability.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (4)
1. an accelerometer circuit board ATE (automatic test equipment), it is characterized in that: comprise rack and be integrated in the accelerometer test macro in rack, described accelerometer test macro comprises data acquisition system (DAS), fixture, matrix switch and industrial computer system, described data acquisition system (DAS) is by matrix switch jockey, described industrial computer system is connection data acquisition system and matrix switch respectively, described matrix switch jockey.
2. a kind of accelerometer circuit board ATE (automatic test equipment) according to claim 1, it is characterized in that: described data acquisition system (DAS) comprises programmable power supply, counter, constant current source, oscillograph, multimeter, frequency marking, described programmable power supply connects industrial computer system and matrix switch respectively; Described counter connects industrial computer system and matrix switch respectively; Described constant current source connects industrial computer system and matrix switch respectively; Described oscillograph connects industrial computer system and matrix switch respectively; Described multimeter connects industrial computer system and matrix switch respectively; Described frequency marking connects industrial control system and matrix switch respectively.
3. a kind of accelerometer circuit board ATE (automatic test equipment) according to claim 2, is characterized in that: adopt RS232 data protocol to communicate to connect between described industrial computer system and programmable power supply.
4. a kind of accelerometer circuit board ATE (automatic test equipment) according to any one of claim 1-3, it is characterized in that: also comprise the network switch and GPIB gateway, described industrial computer system interconnection network switch, the described network switch connects GPIB gateway, and described GPIB gateway connects linkage counter, constant current source, oscillograph, multimeter and frequency marking respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703373.0U CN204203422U (en) | 2014-11-20 | 2014-11-20 | A kind of accelerometer circuit board ATE (automatic test equipment) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703373.0U CN204203422U (en) | 2014-11-20 | 2014-11-20 | A kind of accelerometer circuit board ATE (automatic test equipment) |
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| CN204203422U true CN204203422U (en) | 2015-03-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137319A (en) * | 2015-08-11 | 2015-12-09 | 成都思邦力克科技有限公司 | Accelerometer circuit board testing terminal |
| CN105277824A (en) * | 2015-10-10 | 2016-01-27 | 陕西千山航空电子有限责任公司 | Online automatic testing circuit and method of multichannel collection interface |
| CN108120854A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | A kind of inertial platform electric signal method for automatic measurement |
-
2014
- 2014-11-20 CN CN201420703373.0U patent/CN204203422U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137319A (en) * | 2015-08-11 | 2015-12-09 | 成都思邦力克科技有限公司 | Accelerometer circuit board testing terminal |
| CN105277824A (en) * | 2015-10-10 | 2016-01-27 | 陕西千山航空电子有限责任公司 | Online automatic testing circuit and method of multichannel collection interface |
| CN108120854A (en) * | 2016-11-30 | 2018-06-05 | 北京航天计量测试技术研究所 | A kind of inertial platform electric signal method for automatic measurement |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610000 No. 2 Tianyu Road, hi tech Zone, Sichuan, Chengdu Patentee after: Rong Rong Technology Co., Ltd. Address before: 610000 No. 2 Tianyu Road, hi tech Zone, Sichuan, Chengdu Patentee before: CHENGDU GUORONG TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |