CN202471190U - System for automatically detecting product performance of water level sensor - Google Patents
System for automatically detecting product performance of water level sensor Download PDFInfo
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- CN202471190U CN202471190U CN2011205349951U CN201120534995U CN202471190U CN 202471190 U CN202471190 U CN 202471190U CN 2011205349951 U CN2011205349951 U CN 2011205349951U CN 201120534995 U CN201120534995 U CN 201120534995U CN 202471190 U CN202471190 U CN 202471190U
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Abstract
The utility model discloses a system for automatically detecting product performance of water level sensors. The system comprises a water level sensor group, a power circuit and a main control circuit. The water level sensor group is connected with a power switching circuit and an output signal switching circuit. The power circuit is connected with a system main circuit. The output signal switching circuit is connected with a load testing circuit. The system main circuit is connected with the power switching circuit and a quiescent current detection circuit. The main control circuit comprises a single-chip microcomputer. The load testing circuit and the quiescent current detection circuit are connected with two input channels of an analog-to-digital (A/D) converter integrated in the single-chip microcomputer. The single-chip microcomputer is connected with the power switching circuit and the output signal switching circuit. The single-chip microcomputer communicates with a display screen through an SCI (serial communication interface). The single-chip microcomputer is connected with an external independent keyboard. The system for automatically detecting product performance of water level sensors has the advantages that the structure is simple, the system is convenient to use, the water level sensors can be detected in batches and the working efficiency is improved.
Description
Technical field
The utility model relates generally to properties of product detection technique field, relates in particular to the system that a kind of level sensor properties of product detect automatically.
Background technology
Use a kind of level sensor in the auto industry, high to its performance demands.Need a kind of detection system, the level sensor of producing is carried out Performance Detection.Usually, used detection system can only detect a product, like this, and inefficiency.Need a kind of detection system of level sensor being carried out batch detection.
The utility model content
In order to remedy the deficiency of prior art, the utility model provides a kind of automatic system that detects of level sensor properties of product that can carry out batch detection to level sensor.
The technical scheme that the utility model adopted is:
The system that the level sensor properties of product detect automatically; Include level sensor group, power circuit, main control circuit; It is characterized in that: said level sensor group and power supply switch circuit, output signal switching circuit are connected, and said power circuit is connected with the system main circuit, and said output signal switching circuit is connected with the load testing circuit; Said system main circuit is connected with power supply switch circuit, quiescent current testing circuit; Said main control circuit includes single-chip microcomputer, and said load testing circuit, quiescent current testing circuit insert two input channels of the inner integrated A/D converter of single-chip microcomputer, said single-chip microcomputer and power supply switch circuit, output signal switching circuit control linkage; Said single-chip microcomputer is communicated by letter with display screen through the SCI interface, the external free-standing keyboard of said single-chip microcomputer.
The system that described level sensor properties of product detect automatically, it is characterized in that: said level sensor group is 30 road level sensors.
The system that described level sensor properties of product detect automatically; It is characterized in that: the input voltage of said power circuit is the 16V DC voltage; Be connected with power switch, after LM2940-5V, the conversion of LM317 power supply chip, export 5V, 8V, three kinds of supply voltages of 12V respectively.
The system that described level sensor properties of product detect automatically is characterized in that: said system main circuit carries out voltage through relay and switches, for level sensor provides 8V, 16V voltage, for relay provides 12V voltage.
The system that described level sensor properties of product detect automatically is characterized in that: said quiescent current testing circuit carries out the signal that obtains to send into after difference is amplified through the OPA2335 amplifier AD0 pin sampling of single-chip microcomputer.
The system that described level sensor properties of product detect automatically; It is characterized in that: said power supply switch circuit includes four 74HC595 chips, and the switch unit that described four 74HC595 chip controls ULN2803 chips and transfer relay constitute is one by one given each road level sensor power supply.
The system that described level sensor properties of product detect automatically; It is characterized in that: said output signal switching circuit includes four 74HC595 chips, and the switch unit that described four 74HC595 chip controls ULN2803 chips and transfer relay constitute is one by one received output terminal load testing circuit to the output signal of each level sensor.
The system that described level sensor properties of product detect automatically, it is characterized in that: said load testing circuit includes MOSFET power tube RF7341 chip and load testing resistance, and output terminal send the AD1 pin sampling of single-chip microcomputer.
The system that described level sensor properties of product detect automatically is characterized in that: said display screen adopts 10.4 inches TFT screen, and model is DMT80600S104.
The principle of work of the utility model is: power supply switch circuit is automaticallyed switch by Single-chip Controlling; Be followed successively by each level sensor power supply; The output signal switching circuit is automaticallyed switch by Single-chip Controlling; Be input to the load testing circuit to the voltage signal of level sensor successively, by the single-chip microcomputer sampling, display screen shows again.
The utility model has the advantages that: the utility model is simple in structure, and is easy to use, can carry out batch detection to level sensor, improved work efficiency.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
As shown in Figure 1; The system that the level sensor properties of product detect automatically includes level sensor group 1, power circuit 2, main control circuit, and said level sensor group 1 is connected with power supply switch circuit 4, output signal switching circuit 5; Said power circuit 2 is connected with system main circuit 6; Said output signal switching circuit 5 is connected with load testing circuit 7, and said system main circuit 6 is connected with power supply switch circuit 4, quiescent current testing circuit 8, and said main control circuit includes single-chip microcomputer 3; Said load testing circuit 7, quiescent current testing circuit 8 insert two input channels of the inner integrated A/D converter of single-chip microcomputers 3; Said single-chip microcomputer 3 and power supply switch circuit 4, output signal switching circuit 5 control linkages, said single-chip microcomputer 3 is communicated by letter said single-chip microcomputer 3 external free-standing keyboards 10 through the SCI interface with display screen 9.
Said level sensor group is 30 road level sensors 1.
The input voltage of said power circuit 2 is the 16V DC voltage, is connected with power switch, after LM2940-5V, the conversion of LM317 power supply chip, exports 5V, 8V, three kinds of supply voltages of 12V respectively.
Said system main circuit 6 carries out voltage through relay and switches, for level sensor provides 8V, 16V voltage, for relay provides 12V voltage.
Said quiescent current testing circuit 8 carries out the signal that obtains to send into after difference is amplified through the OPA2335 amplifier AD0 pin sampling of single-chip microcomputer.
Said power supply switch circuit 4 includes four 74HC595 chips, and the switch unit that described four 74HC595 chip controls ULN2803 chips and transfer relay constitute is one by one given each road level sensor power supply.
Said output signal switching circuit 5 includes four 74HC595 chips, and the switch unit that described four 74HC595 chip controls ULN2803 chips and transfer relay constitute is one by one received output terminal load testing circuit to the output signal of each level sensor.
Said load testing circuit 8 includes MOSFET power tube RF7341 chip and load testing resistance, and output terminal send the AD1 pin sampling of single-chip microcomputer.
Said display screen 9 adopts 10.4 inches TFT screen, and model is DMT80600S104.
Claims (9)
1. the system that detects automatically of level sensor properties of product; Include level sensor group, power circuit, main control circuit; It is characterized in that: said level sensor group and power supply switch circuit, output signal switching circuit are connected, and said power circuit is connected with the system main circuit, and said output signal switching circuit is connected with the load testing circuit; Said system main circuit is connected with power supply switch circuit, quiescent current testing circuit; Said main control circuit includes single-chip microcomputer, and said load testing circuit, quiescent current testing circuit insert two input channels of the inner integrated A/D converter of single-chip microcomputer, said single-chip microcomputer and power supply switch circuit, output signal switching circuit control linkage; Said single-chip microcomputer is communicated by letter with display screen through the SCI interface, the external free-standing keyboard of said single-chip microcomputer.
2. the system that level sensor properties of product according to claim 1 detect automatically, it is characterized in that: said level sensor group is 30 road level sensors.
3. the system that level sensor properties of product according to claim 1 detect automatically; It is characterized in that: the input voltage of said power circuit is the 16V DC voltage; Be connected with power switch, after LM2940-5V, the conversion of LM317 power supply chip, export 5V, 8V, three kinds of supply voltages of 12V respectively.
4. the system that level sensor properties of product according to claim 1 detect automatically is characterized in that: said system main circuit carries out voltage through relay and switches, for level sensor provides 8V, 16V voltage, for relay provides 12V voltage.
5. the system that level sensor properties of product according to claim 1 detect automatically is characterized in that: said quiescent current testing circuit carries out the signal that obtains to send into after difference is amplified through the OPA2335 amplifier AD0 pin sampling of single-chip microcomputer.
6. the system that level sensor properties of product according to claim 1 detect automatically; It is characterized in that: said power supply switch circuit includes four 74HC595 chips, and the switch unit that described four 74HC595 chip controls ULN2803 chips and transfer relay constitute is one by one given each road level sensor power supply.
7. the system that level sensor properties of product according to claim 1 detect automatically; It is characterized in that: said output signal switching circuit includes four 74HC595 chips, and the switch unit that described four 74HC595 chip controls ULN2803 chips and transfer relay constitute is one by one received output terminal load testing circuit to the output signal of each level sensor.
8. the system that level sensor properties of product according to claim 1 detect automatically, it is characterized in that: said load testing circuit includes MOSFET power tube RF7341 chip and load testing resistance, and output terminal send the AD1 pin sampling of single-chip microcomputer.
9. the system that level sensor properties of product according to claim 1 detect automatically is characterized in that: said display screen adopts 10.4 inches TFT screen, and model is DMT80600S104.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205349951U CN202471190U (en) | 2011-12-20 | 2011-12-20 | System for automatically detecting product performance of water level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205349951U CN202471190U (en) | 2011-12-20 | 2011-12-20 | System for automatically detecting product performance of water level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202471190U true CN202471190U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205349951U Expired - Fee Related CN202471190U (en) | 2011-12-20 | 2011-12-20 | System for automatically detecting product performance of water level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202471190U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677469A (en) * | 2013-12-03 | 2015-06-03 | 上海航天设备制造总厂 | Liquid level sensor automatic detecting device |
| CN106375038A (en) * | 2016-08-31 | 2017-02-01 | 成都前锋电子仪器有限责任公司 | Automatic detection tool of micro-power wireless module |
-
2011
- 2011-12-20 CN CN2011205349951U patent/CN202471190U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677469A (en) * | 2013-12-03 | 2015-06-03 | 上海航天设备制造总厂 | Liquid level sensor automatic detecting device |
| CN106375038A (en) * | 2016-08-31 | 2017-02-01 | 成都前锋电子仪器有限责任公司 | Automatic detection tool of micro-power wireless module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20121220 |