CN204964057U - A wireless sensor for warehouse temperature measurement - Google Patents
A wireless sensor for warehouse temperature measurement Download PDFInfo
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- CN204964057U CN204964057U CN201520749429.0U CN201520749429U CN204964057U CN 204964057 U CN204964057 U CN 204964057U CN 201520749429 U CN201520749429 U CN 201520749429U CN 204964057 U CN204964057 U CN 204964057U
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Abstract
The utility model discloses a wireless sensor for warehouse temperature measurement, comprising an one -chip microcomputer, wireless transmitting circuit, touch screen module, correction circuit and sensor circuit, wireless transmitting circuit is connected respectively to the singlechip, touch screen module and EMI wave filter, the EMI wave filter still connects gradually the correction circuit, amplifier circuit and sensor circuit, the correction circuit includes three terminal regulator U1, chip U2, chip U3 and resistance R1, 1 ground connection of three terminal regulator U1 pin, three terminal regulator U1 pin 3 VCC that connects, ground resistance R1 and chip U2 pin 3 are connected respectively to three terminal regulator U1 pin 2, grounded capacitance C1 and 12V power negative pole are connected respectively to chip U2 pin 4, 5 ground connection of chip U2 pin. The utility model discloses a wireless sensor for warehouse temperature measurement can show the temperature in the warehouse in real time to send away temperature signal through wireless mode, circuit structure is simple, and is with low costs, and stability is high, especially adapted using widely.
Description
Technical field
The utility model relates to a kind of wireless senser, specifically a kind of wireless senser measured for MW temperature.
Background technology
Warehouse is as a kind of store tools, and a lot of storage object is very high to temperature requirement, such as grain, vegetables, melon and fruit etc., and a lot of warehouse adopts personal monitoring's temperature, waste of manpower resource now, and effect is bad.
Utility model content
The purpose of this utility model is to provide a kind of wireless senser measured for MW temperature in real time, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of wireless senser measured for MW temperature, comprise single-chip microcomputer, wireless transmission circuit, touch screen module, correcting circuit and sensor circuit, described single-chip microcomputer connects wireless transmission circuit, touch screen module and electromagnetic interface filter respectively, and electromagnetic interface filter also connects correcting circuit, amplifying circuit and sensor circuit successively.
Correcting circuit comprises three terminal regulator U1, chip U2, chip U3 and resistance R1, three terminal regulator U1 pin 1 ground connection, three terminal regulator U1 pin 3 connects power supply VCC, three terminal regulator U1 pin 2 connects stake resistance R1 and chip U2 pin 3 respectively, chip U2 pin 4 connects direct earth capacitance C1 and 12V power cathode respectively, chip U2 pin 5 ground connection, chip U2 pin 7 connects direct earth capacitance C2 and 12V positive source respectively, chip U2 pin 2 contact resistance R6, the resistance R6 other end is contact resistance R3 and chip U2 pin 6 respectively, the resistance R3 other end is contact resistance R2 and chip U3 pin 3 respectively, the resistance R2 other end connects amplification circuit output end, described chip U3 pin 4 connects direct earth capacitance C3 and 12V power cathode respectively, chip U3 pin 2 connects stake resistance R4 and resistance R5 respectively, the resistance R5 other end connects chip U3 pin 6 and band pass filter circuit input end respectively, chip U3 pin 7 connects direct earth capacitance C4 and 12V power cathode respectively, chip U3 pin 5 ground connection.
As further program of the utility model: described three terminal regulator U1 model is 7805.
As further program of the utility model: described chip U2 and chip U3 model are OP07.
As the utility model further scheme: described sensor circuit adopts platinum resistance temperature sensor.
Compared with prior art, the beneficial effects of the utility model are: the utility model is used for the wireless senser that MW temperature is measured, the temperature in warehouse can be shown in real time, and temperature signal is wirelessly sent, circuit structure is simple, cost is low, and stability is high, is applicable to very much promoting the use of.
Accompanying drawing explanation
Fig. 1 is a kind of structured flowchart of the wireless senser for MW temperature measurement;
Fig. 2 is a kind of circuit diagram for correcting circuit in the wireless senser of MW temperature measurement.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 2, in the utility model embodiment, a kind of wireless senser measured for MW temperature, comprise single-chip microcomputer, wireless transmission circuit, touch screen module, correcting circuit and sensor circuit, single-chip microcomputer connects wireless transmission circuit, touch screen module and electromagnetic interface filter respectively, and electromagnetic interface filter also connects correcting circuit, amplifying circuit and sensor circuit successively.
Correcting circuit comprises three terminal regulator U1, chip U2, chip U3 and resistance R1, three terminal regulator U1 pin 1 ground connection, three terminal regulator U1 pin 3 connects power supply VCC, three terminal regulator U1 pin 2 connects stake resistance R1 and chip U2 pin 3 respectively, chip U2 pin 4 connects direct earth capacitance C1 and 12V power cathode respectively, chip U2 pin 5 ground connection, chip U2 pin 7 connects direct earth capacitance C2 and 12V positive source respectively, chip U2 pin 2 contact resistance R6, the resistance R6 other end is contact resistance R3 and chip U2 pin 6 respectively, the resistance R3 other end is contact resistance R2 and chip U3 pin 3 respectively, the resistance R2 other end connects amplification circuit output end, described chip U3 pin 4 connects direct earth capacitance C3 and 12V power cathode respectively, chip U3 pin 2 connects stake resistance R4 and resistance R5 respectively, the resistance R5 other end connects chip U3 pin 6 and band pass filter circuit input end respectively, chip U3 pin 7 connects direct earth capacitance C4 and 12V power cathode respectively, chip U3 pin 5 ground connection.
Three terminal regulator U1 model is 7805.
Chip U2 and chip U3 model are OP07.
Sensor circuit adopts platinum resistance temperature sensor.
Principle of work of the present utility model is: sensor circuit is placed in warehouse, and its can produce voltage signal according to the change of temperature, this voltage is carried out the amplification of about 10 times by amplifying circuit, make signal amplify more easily identify by other later circuit.In order to prevent from amplifying later series of voltage value likely can not identify by single-chip microcomputer, the voltage of amplification is carried out suitable adjustment through correcting circuit its zero point of reference is more suitably convenient for measuring.Because the original signal gathered by platinum sensor is not through any process, so there is a large amount of undesired signals, namely we will the voltage after correction again by a second-order bandpass filter circuit, unnecessary undesired signal is filtered out, then through electromagnetic interface filter, receives single-chip microcomputer by the signal after rectifying and wave-filtering, external interrupt is made to work in edging trigger, measure real time temperature, shown by touch-screen, and be sent to external reception module by wireless transmission circuit.
Claims (4)
1. the wireless senser measured for MW temperature, comprise single-chip microcomputer, wireless transmission circuit, touch screen module, correcting circuit and sensor circuit, it is characterized in that, described single-chip microcomputer connects wireless transmission circuit, touch screen module and electromagnetic interface filter respectively, and electromagnetic interface filter also connects correcting circuit, amplifying circuit and sensor circuit successively, described correcting circuit comprises three terminal regulator U1, chip U2, chip U3 and resistance R1, three terminal regulator U1 pin 1 ground connection, three terminal regulator U1 pin 3 connects power supply VCC, three terminal regulator U1 pin 2 connects stake resistance R1 and chip U2 pin 3 respectively, chip U2 pin 4 connects direct earth capacitance C1 and 12V power cathode respectively, chip U2 pin 5 ground connection, chip U2 pin 7 connects direct earth capacitance C2 and 12V positive source respectively, chip U2 pin 2 contact resistance R6, the resistance R6 other end is contact resistance R3 and chip U2 pin 6 respectively, the resistance R3 other end is contact resistance R2 and chip U3 pin 3 respectively, the resistance R2 other end connects amplification circuit output end, described chip U3 pin 4 connects direct earth capacitance C3 and 12V power cathode respectively, chip U3 pin 2 connects stake resistance R4 and resistance R5 respectively, the resistance R5 other end connects chip U3 pin 6 and band pass filter circuit input end respectively, chip U3 pin 7 connects direct earth capacitance C4 and 12V power cathode respectively, chip U3 pin 5 ground connection.
2. the wireless senser measured for MW temperature according to claim 1, it is characterized in that, described three terminal regulator U1 model is 7805.
3. the wireless senser measured for MW temperature according to claim 1, it is characterized in that, described chip U2 and chip U3 model are OP07.
4. the wireless senser measured for MW temperature according to claim 1, is characterized in that, described sensor circuit adopts platinum resistance temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520749429.0U CN204964057U (en) | 2015-09-25 | 2015-09-25 | A wireless sensor for warehouse temperature measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520749429.0U CN204964057U (en) | 2015-09-25 | 2015-09-25 | A wireless sensor for warehouse temperature measurement |
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| Publication Number | Publication Date |
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| CN204964057U true CN204964057U (en) | 2016-01-13 |
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| CN201520749429.0U Active CN204964057U (en) | 2015-09-25 | 2015-09-25 | A wireless sensor for warehouse temperature measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938025A (en) * | 2016-07-09 | 2016-09-14 | 孙祝兵 | Grain depot wireless temperature monitoring system |
| CN108061607A (en) * | 2017-11-30 | 2018-05-22 | 贵州航天电子科技有限公司 | A kind of small volume high precision temperature measurement module |
-
2015
- 2015-09-25 CN CN201520749429.0U patent/CN204964057U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938025A (en) * | 2016-07-09 | 2016-09-14 | 孙祝兵 | Grain depot wireless temperature monitoring system |
| CN108061607A (en) * | 2017-11-30 | 2018-05-22 | 贵州航天电子科技有限公司 | A kind of small volume high precision temperature measurement module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |