CN102183320A - Automatic test system for temperature-class instrument - Google Patents
Automatic test system for temperature-class instrument Download PDFInfo
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- CN102183320A CN102183320A CN 201110043025 CN201110043025A CN102183320A CN 102183320 A CN102183320 A CN 102183320A CN 201110043025 CN201110043025 CN 201110043025 CN 201110043025 A CN201110043025 A CN 201110043025A CN 102183320 A CN102183320 A CN 102183320A
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Abstract
The invention relates to an automatic test system for a temperature-class instrument. An upper computer sends a control command to a lower computer through a serial port; the lower computer receives the command and drives a control circuit to make a temperature-class signal pass through a signal conversion circuit and connect an intrinsic safety anti-explosion instrument; the upper computer sends a signal to a high-precision universal meter and acquires an output signal of the intrinsic safety anti-explosion instrument; the high-precision universal meter transmits data to the upper computer through the serial port; and the upper computer automatically finishes analyzing and storing functions, determines the performance of the instrument and uploads the data to a database for storage. By the automatic test system, the precision of a temperature-class signal control transmission process is enhanced; the automatic test system can automatically measure output parameters, power consumption, a load influence and an alternating-current component of the intrinsic safety anti-explosion instrument under different signal measuring ranges, analyze the performance parameters so as to judge whether the performance parameters meet a delivery requirement, and store the parameter data in real time, so that the working capacity of an operator is reduced, the working efficiency is improved and the personal factor influence can be avoided.
Description
Technical field
Patent of the present invention relates to a kind of Auto-Test System, particularly a kind of temperature classes instrument Auto-Test System.
Background technology
At present, most temperature classes instrument is because trueness error is difficult to accomplish automatic measurement, and the method for testing of intrinsic safe explosion-proof class instrument function is made a copy of for manual or semi-automatic test, record data adopt paper, in test and recording process, be subjected to artificial factor easily, the functional test of a small amount of instrument adopts manual method can finish test assignment, but after production scale enlarges, the manual method inefficiency, take ample resources, the shortcoming that increases cost is just more obvious.
Summary of the invention
Patent of the present invention is at present temperature classes input instrument function test system and test low precision and inefficient problem, a kind of temperature classes instrument Auto-Test System has been proposed, can guarantee temperature classes Meter Test precision, has good man-machine interface, and test data can be inquired about and review, and has improved work efficiency greatly.
The technical scheme of patent of the present invention is: a kind of temperature classes instrument Auto-Test System, comprise the intrinsic safe explosion-proof instrument, barcode scanner, barcode scanner reads intrinsic safe explosion-proof instrument product numbering data, also comprise host computer, slave computer, the high precision multimeter, control circuit, signaling conversion circuit, host computer by serial ports to the slave computer transmitting control commands, after slave computer receives orders, Drive and Control Circuit, accurate temperature class signal after will changing by the input signal change-over circuit is connected the intrinsic safe explosion-proof instrument, host computer issues instructions to the high precision multimeter parameter signal of intrinsic safe explosion-proof instrument is gathered, the high precision multimeter is uploaded to host computer with data by serial ports, host computer is finished automatically and is analyzed and memory function, simultaneously with data upload to database storing.
Every group of resistance such as signal source forme cabling in the described signaling conversion circuit, and use live width 4mm, the Copper Foil of forme copper cash thickness 70um.
The beneficial effect of patent of the present invention is: temperature classes instrument Auto-Test System of the present invention, solved the precision problem in the temperature classes signal controlling transmission course, can measure the output parameter of intrinsic safe explosion-proof instrument under the temperature classes input intrinsic safe explosion-proof instrument unlike signal range and power consumption, load effect, AC compounent automatically, and these performance parameters are analyzed, judge whether it satisfies dispatch from the factory requirement and real-time storage supplemental characteristic.Reduce operating personnel's workload, increase work efficiency, avoid artificial factor.
Description of drawings
Fig. 1 is a temperature classes instrument Auto-Test System structured flowchart of the present invention;
Fig. 2 is a temperature classes instrument Auto-Test System input signal change-over circuit of the present invention;
Fig. 3 is a temperature classes instrument Auto-Test System test loop hardware sketch of the present invention.
Fig. 4 is a temperature classes instrument Auto-Test System control circuit schematic diagram of the present invention.
Embodiment
Fig. 1 is the system architecture diagram of patent of the present invention, system is by host computer 9, slave computer 7, high precision multimeter 8, barcode scanner 4, intrinsic safe explosion-proof instrument 3, signaling conversion circuit 2, control circuit 5, test loop 6, database 11 is formed, operating personnel's 10 operational computations machines 9, host computer 9 sends various control commands by serial ports to slave computer 7, slave computer 7 Drive and Control Circuit 5, drive relay closes and disconnect corresponding signaling conversion circuit 2 of composition and test loop 6, after forming suitable test loop 6, temperature classes signal 1 is connected intrinsic safe explosion-proof instrument 3 test lines by signaling conversion circuit 2, the parameter signal of 8 pairs of intrinsic safe explosion-proof instrument 3 of host computer 9 control high precision multimeters is gathered, high precision multimeter 8 is uploaded to host computer 9 with these signal datas by serial ports, automatically finish analysis, memory function by host computer 9.Barcode scanner 4 reads intrinsic safe explosion-proof instrument 3 production code member data and sends into host computer 9, and host computer 9 can be sent into data and analysis result to preserve in the database and share.
Fig. 2 is a test macro input signal change-over circuit 2, K1 among the figure, K2 ... K49 is a relay, relay adopts the mode of dual redundant to reduce error resistance, R1, R2, R3 is a resistance signal source, 726 is the millivolt signal source, A1-A3, B1-B3, C1-C3 etc. are external 1 square millimeter of lead, and the forme cabling guarantees following regular RA1=RA2=RA3, RB1=RB2=RB3=43mm, RC1=RC2=RC3=58mm, RD1=RD2=RD3 RE1=RE2=RE3=55mm, live width 4mm, forme copper cash thickness 70um, thus guarantee that resistance signal source meets the demands through control circuit conversion back precision.
Fig. 3 is the hardware sketch of test loop 6, K1, K2 among the figure ... K50 is a relay, 24VDC is a direct supply, be slave computer and tested instrument power supply, Ro1, Ro2 be precision be ten thousand/ 100 ohm of high precision DC Standard Resistor, be used for the collection of output signal, 1R resistance is used for the collection of instrument power loss signal.Relay disconnects the closed suitable metering circuit of forming.S1-1, S1-2, S7-4 is a connection terminal, S7-3 wherein, S7-4 connect tested instrument power supply+end and-end is used for instrument power supply, S3-1, S3-2, S3-3 connects tested instrument passage one input port, S4-1, S4-2, S4-3 connects passage two input ports of tested instrument, provide the signal input by conversion control circuit for tested instrument, S5-1, S5-2 connects signalling channel one output port of tested instrument, S5-3, S5-4 connects signalling channel two output ports of tested instrument, S6-3, S6-4, Ro1-3, Ro1-4 connects four terminals of DC Standard Resistor Ro1, S6-1, S6-2, Ro2-3, Ro2-4 meets four terminals of DC Standard Resistor Ro2, S8-3, S8-4 connects high precision multimeter signals collecting end.
After the test macro energising, host computer 9 sends test command to slave computer 7, after single-chip microcomputer receives this order, according to 43 I/O mouth output of this order control high-low level, makes corresponding relay closes or disconnection, forms control loop.Because relay quantity is more, is divided into 22 class control function, combination control; As passage one load 100R, relay K 18, K24, K38, K31 closure, relay K 35, K28, K29, K30, K33, K34, K35 disconnect.As the input of passage one thermal resistance, relay K 4 K5 K12 K47 K49 closures, relay K 14, K6, K7 disconnect.As measuring passage thermal resistance input, the output during load 100R then needs two kinds of control function are used in combination.
Fig. 4 is control circuit 5 and necessary peripheral circuit, in patent of the present invention, need 50 relays to finish the combination of test loop 6 altogether, thereby need 43 control circuits, Fig. 4 only illustrates, the relay K of drawing X, the control circuit of all the other relays is similar, during PX output high level, flows through the current drives triode conducting of triode TX ground level, relay K X coil has electric current to flow through, and makes relay K X closure; When PX was low level, output voltage was about 0V, and triode Q1 is in cut-off state, relay K X coil no current, and relay K X disconnects, and coil is an energy-accumulating element, and DX plays the effect of afterflow.
Claims (2)
1. temperature classes instrument Auto-Test System, comprise the intrinsic safe explosion-proof instrument, barcode scanner, barcode scanner reads intrinsic safe explosion-proof instrument product numbering data, it is characterized in that, also comprise host computer, slave computer, the high precision multimeter, control circuit, signaling conversion circuit, host computer by serial ports to the slave computer transmitting control commands, after slave computer receives orders, Drive and Control Circuit, accurate temperature class signal after will changing by the input signal change-over circuit is connected the intrinsic safe explosion-proof instrument, host computer issues instructions to the high precision multimeter parameter signal of intrinsic safe explosion-proof instrument is gathered, the high precision multimeter is uploaded to host computer with data by serial ports, host computer is finished automatically and is analyzed and memory function, simultaneously with data upload to database storing.
2. according to the described temperature classes instrument of claim 1 Auto-Test System, it is characterized in that, every group of resistance such as signal source forme cabling in the described signaling conversion circuit, and use live width 4mm, the Copper Foil of forme copper cash thickness 70um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110043025 CN102183320A (en) | 2011-02-23 | 2011-02-23 | Automatic test system for temperature-class instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110043025 CN102183320A (en) | 2011-02-23 | 2011-02-23 | Automatic test system for temperature-class instrument |
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| Publication Number | Publication Date |
|---|---|
| CN102183320A true CN102183320A (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110043025 Pending CN102183320A (en) | 2011-02-23 | 2011-02-23 | Automatic test system for temperature-class instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565591A (en) * | 2012-01-16 | 2012-07-11 | 中冶南方（武汉）自动化有限公司 | Automatic testing device for frequency converter power board |
| CN104661238A (en) * | 2015-01-16 | 2015-05-27 | 杭州斯凯网络科技有限公司 | Mobile phone power consumption test system |
| CN112419850A (en) * | 2020-12-14 | 2021-02-26 | 海南电网有限责任公司三亚供电局 | Detection signal simulation teaching experiment device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689140U (en) * | 2010-04-29 | 2010-12-29 | 上海辰竹仪表有限公司 | Automatic performance test system of intrinsic safe explosion-proof instrument |
| CN202075064U (en) * | 2011-02-23 | 2011-12-14 | 上海辰竹仪表有限公司 | Automatic performance test system for intrinsic safe explosion-proof instrument |
-
2011
- 2011-02-23 CN CN 201110043025 patent/CN102183320A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689140U (en) * | 2010-04-29 | 2010-12-29 | 上海辰竹仪表有限公司 | Automatic performance test system of intrinsic safe explosion-proof instrument |
| CN202075064U (en) * | 2011-02-23 | 2011-12-14 | 上海辰竹仪表有限公司 | Automatic performance test system for intrinsic safe explosion-proof instrument |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565591A (en) * | 2012-01-16 | 2012-07-11 | 中冶南方（武汉）自动化有限公司 | Automatic testing device for frequency converter power board |
| CN102565591B (en) * | 2012-01-16 | 2014-06-11 | 中冶南方（武汉）自动化有限公司 | Automatic testing device for frequency converter power board |
| CN104661238A (en) * | 2015-01-16 | 2015-05-27 | 杭州斯凯网络科技有限公司 | Mobile phone power consumption test system |
| CN112419850A (en) * | 2020-12-14 | 2021-02-26 | 海南电网有限责任公司三亚供电局 | Detection signal simulation teaching experiment device |
| CN112419850B (en) * | 2020-12-14 | 2022-12-02 | 海南电网有限责任公司三亚供电局 | Detection signal simulation teaching experiment device |
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Application publication date: 20110914 |