CN104616465A - Wireless temperature measuring device - Google Patents
Wireless temperature measuring device Download PDFInfo
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- CN104616465A CN104616465A CN201310539155.8A CN201310539155A CN104616465A CN 104616465 A CN104616465 A CN 104616465A CN 201310539155 A CN201310539155 A CN 201310539155A CN 104616465 A CN104616465 A CN 104616465A
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Abstract
The invention discloses a wireless temperature measuring device, including a switch S1, a wireless transmission module U1, a wireless receiver module U2, a decoding chip U3, a control module U4 and a digital tube U5, wherein when the switch S1 is closed, the wireless transmission module U1 sends a temperature detecting instruction to the wireless receiver module U2, the wireless receiver module U2 sends the temperature detecting instruction to the decoding chip U3, the decoding chip U3 decodes the temperature detecting instruction, and then sends the temperature detecting instruction to the control module U4, at the moment, the data output end of the decoding chip U3 is at high electrical level, the control module U4 sends the detected temperature value to the U5 digital tube, and the digital tube U5 displays the temperature value detected by the control module U4. The wireless temperature measuring device can realize the wireless connection between temperature measurement instruction sending and the temperature measurement instruction receiving parts so as to facilitate remote temperature measurement to ensure the safety of the test personnel.
Description
Technical field
The present invention relates to electronic circuit technology field, be specifically related to a kind of wireless temperature measuring device.
Background technology
In the manufacture process of many products, the faint change of temperature will cause product manufacturing failure, therefore, extremely important to the control of temperature.But the manufacture temperature of the manufacturing process of many products is very high, and the device of probe temperature is all non-wireless means at present, and during use, tester is close to testee, and this will cause potential harm to the personal safety of tester.
Summary of the invention
The embodiment of the invention discloses a kind of wireless temperature measuring device, for realizing the wireless connections sending thermometric instruction and receive between thermometric instruction unit, being convenient to Distance Test temperature, to ensure the safety of tester.
A kind of wireless temperature measuring device, comprising:
Switch S 1, wireless sending module U1, wireless receiving module U2, decoding chip U3, control module U4, charactron U5, wherein:
One end of described switch S 1 is used for connecting earth terminal, the other end of described switch S 1 connects the input end 2 of described wireless sending module U1, the input end 1 of described wireless sending module U1 is for connecting power supply, the input end 6 of described wireless sending module U1 is for connecting earth terminal, the output terminal 1 of described wireless receiving module U2 is for connecting earth terminal, the output terminal 2 of described wireless receiving module U2 is connected the data input pin DIN of described decoding chip U3 with 3, the output terminal 4 of described wireless receiving module U2 is for connecting power supply, the data output end D2 of described decoding chip U3 connects the input end IN of described control module U4, the output terminal 1-8 of described control module U4 connects the sheet choosing end a of described charactron U5 respectively, b, c, d, e, f, g, DP, the output terminal 9 and 10 of described control module U4 is connected position choosing end A1 and A2 of described charactron U5 respectively, described switch S 1 is for controlling the duty of wireless temperature measuring device, described wireless sending module U1 is used for, after described switch S 1 is closed, sending thermometric instruction to described wireless receiving module U2, the described thermometric instruction that described wireless receiving module U2 sends for receiving described wireless transmitter module U1, and described thermometric instruction is sent to described decoding chip U3, the described thermometric instruction that described decoding chip U3 sends for receiving described wireless receiving module U2, and described thermometric instruction is decoded, and decoded thermometric instruction is sent to described control module U4, the described decoded thermometric instruction that described control module U4 sends for receiving described decoding chip U3, and according to described decoded thermometric instruction testing temperature, and the temperature value of test is sent to described charactron U5, the described temperature value that described charactron U5 sends for receiving described control module U4, and described temperature value is shown.
Wherein, described control module U4 comprises single-chip microcomputer U6, temperature sensor U7, filter capacitor C5, wherein:
The PB0 pin of the B I/O port of described single-chip microcomputer U6 connects the data output end D2 of described decoding chip U3, the PD0 pin of the D I/O port of described single-chip microcomputer U6 connects the data I/O end of described temperature sensor U7, the earth terminal GND of described temperature sensor U7 is used for connecting earth terminal, the power end VCC of described temperature sensor U7 is for connecting power supply, the GND pin of described single-chip microcomputer U6 is used for connecting earth terminal, the AREF pin of described single-chip microcomputer U6 is for connecting one end of described filter capacitor C5, the other end of described filter capacitor C5 is used for connecting earth terminal, AVCC with the VCC pin of described single-chip microcomputer U6 is for being connected power supply, the PC0-PC7 pin of the C I/O port of described single-chip microcomputer U6 connects the sheet choosing end a of described charactron U5 respectively, b, c, d, e, f, g, DP, PA0 with the PA1 pin of the A I/O port of described single-chip microcomputer U6 is connected position choosing end A1 and A2 of described charactron U5 respectively.
Wherein, described control module U4 also comprises:
Current-limiting resistance R1, switch S 2, filter capacitor C1 ~ C4, crystal oscillator pipe Y1, wherein:
One end of described current-limiting resistance R1 is for connecting power supply, the other end of described current-limiting resistance R1 connects one end of described switch S 2, the other end of described switch S 2 is used for connecting earth terminal, described filter capacitor C3 is connected in parallel described switch S 2, described filter capacitor C4 is connected in parallel described filter capacitor C3, the other end of described current-limiting resistance R1 connects the RESET pin of described single-chip microcomputer U6, one end of described filter capacitor C1 is used for connecting earth terminal, the other end of described filter capacitor C1 connects one end of described crystal oscillator pipe Y1, the other end of described crystal oscillator pipe Y1 connects one end of described filter capacitor C2, the other end of described filter capacitor C2 is used for connecting earth terminal, the other end of described filter capacitor C1 connects the XTAL1 pin of described single-chip microcomputer U6, one end of described filter capacitor C2 connects the XTAL2 pin of described single-chip microcomputer U6.
Alternatively, described power supply is the alternating current of 5V.
Alternatively, the model of described single-chip microcomputer U6 is ATMEGA16.
Alternatively, the model of described wireless sending module U1 is ZB-FSK-2A.
Alternatively, the model of described wireless receiving module U2 is XY-R03A.
Alternatively, the model of described decoding chip U3 is PT2272.
Alternatively, the model of described temperature sensor U7 is DS18B20.
Alternatively, the model of described charactron U8 is 7SEG.
In the embodiment of the present invention, switch S 1 controls wireless sending module U1 and sends thermometric instruction, when switch S 1 closes, thermometric instruction is had to send to decoding chip U3, the data output end of decoding chip U3 will export high level, after control module U4 detects this high level, the temperature value of test is sent to charactron U5, the temperature value that charactron U5 display control module U4 tests.In the embodiment of the present invention, for realizing the wireless connections sending thermometric instruction and receive between thermometric instruction unit, be convenient to Distance Test temperature, to ensure the safety of tester.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural drawing of a kind of wireless temperature measuring device disclosed by the invention;
Fig. 2 is the structural drawing of another kind of wireless temperature measuring device disclosed by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of wireless temperature measuring device, for realizing the wireless connections sending thermometric instruction and receive between thermometric instruction unit, being convenient to Distance Test temperature, to ensure the safety of tester.Below be described in detail respectively.
Refer to Fig. 1, Fig. 1 is a kind of wireless temperature measuring device disclosed in the embodiment of the present invention.As shown in Figure 1, this wireless temperature measuring device can comprise:
Switch S 1, wireless sending module U1, wireless receiving module U2, decoding chip U3, control module U4, charactron U5, wherein:
One end of switch S 1 is used for connecting earth terminal, the other end of switch S 1 connects the input end 2 of wireless sending module U1, the input end 1 of wireless sending module U1 is for connecting power supply, the input end 6 of wireless sending module U1 is for connecting earth terminal, the output terminal 1 of wireless receiving module U2 is for connecting earth terminal, the output terminal 2 of wireless receiving module U2 is connected the data input pin DIN of decoding chip U3 with 3, the output terminal 4 of wireless receiving module U2 is for connecting power supply, the input end IN of the data output end D2 link control module U4 of decoding chip U3, the output terminal 1-8 of control module U4 connects the sheet choosing end a of charactron U5 respectively, b, c, d, e, f, g, DP, the output terminal 9 and 10 of control module U4 is connected position choosing end A1 and A2 of charactron U5 respectively, switch S 1 is for controlling the duty of wireless temperature measuring device, wireless sending module U1 is used for after the switch Sl is closed, sends thermometric instruction to wireless receiving module U2, the thermometric instruction that wireless receiving module U2 sends for receiving wireless transmitter module U1, and thermometric instruction is sent to decoding chip U3, the thermometric instruction that decoding chip U3 sends for receiving wireless receiving module U2, and thermometric instruction is decoded, and decoded thermometric instruction is sent to control module U4, control module U4 is used for the decoded thermometric instruction that receipt decoding chip U3 sends, and according to decoded thermometric instruction testing temperature, and the temperature value of test is sent to charactron U5, the temperature value that charactron U5 sends for receiving control module U4, and temperature value is shown.
Wherein, the principle of work of the wireless temperature measuring device shown in Fig. 1 is: S1 is switch, U1 is wireless sending module, U2 is wireless receiving module, U3 is decoding chip, U4 is control module, U5 is charactron; When switch S 1 closes, thermometric instruction is sent to wireless receiving module U2 by wireless sending module U1, wireless receiving module U2 receives thermometric instruction and thermometric instruction is sent to decoding chip U3, after decoding chip U3 receives thermometric instruction, thermometric instruction decoding is sent to control module U4, now, the data output end of decoding chip U3 is high level, after control module U4 detects this high level, the temperature value of test is sent to charactron U5, and charactron U5 receives the temperature value of control module U4 transmission and shows its temperature value; When switch S 1 disconnects, wireless sending module U1 does not send thermometric instruction, and now, the data output end of decoding chip U3 is low level, and control module U4 does not send temperature value to charactron U5.
Above, be exactly scheme and the principles and methods of the embodiment of the present invention 1, summing up is exactly send thermometric instruction by switch control rule wireless sending module, and the temperature value of test is sent to charactron according to steering order by control module, the temperature value of numeral method control module test.
Wireless temperature measuring device disclosed in the embodiment of the present invention, for realizing the wireless connections sending thermometric instruction and receive between thermometric instruction unit, is convenient to Distance Test temperature, to ensure the safety of tester.
Refer to Fig. 2, Fig. 2 is another kind of wireless temperature measuring device disclosed in the embodiment of the present invention.Wherein, the wireless temperature measuring device shown in Fig. 2 is optimized the wireless temperature measuring device shown in Fig. 1 to obtain, and compared with the wireless temperature measuring device shown in Fig. 1, the control module U4 of the wireless temperature measuring device shown in Fig. 2 can comprise:
Single-chip microcomputer U6, temperature sensor U7, filter capacitor C5, wherein:
The PB0 pin of the B I/O port of single-chip microcomputer U6 connects the data output end D2 of decoding chip U3, the PD0 pin of the D I/O port of single-chip microcomputer U6 connects the data I/O end of temperature sensor U7, the earth terminal GND of temperature sensor U7 is used for connecting earth terminal, the power end VCC of temperature sensor U7 is for connecting power supply, the GND pin of single-chip microcomputer U6 is used for connecting earth terminal, the AREF pin of single-chip microcomputer U6 is for connecting one end of filter capacitor C5, the other end of filter capacitor C5 is used for connecting earth terminal, AVCC with the VCC pin of single-chip microcomputer U6 is for being connected power supply, the PC0-PC7 pin of the C I/O port of single-chip microcomputer U6 connects the sheet choosing end a of charactron U5 respectively, b, c, d, e, f, g, DP, PA0 with the PA1 pin of the A I/O port of single-chip microcomputer U6 is connected position choosing end A1 and A2 of charactron U5 respectively.
Wherein, control module U4 can also comprise:
Current-limiting resistance R1, switch S 2, filter capacitor C1 ~ C4, crystal oscillator pipe Y1, wherein:
One end of current-limiting resistance R1 is for connecting power supply, one end of the other end connecting valve S2 of current-limiting resistance R1, the other end of switch S 2 is used for connecting earth terminal, filter capacitor C3 is connected in parallel switch S 2, filter capacitor C4 is connected in parallel filter capacitor C3, the other end of current-limiting resistance R1 connects the RESET pin of single-chip microcomputer U6, one end of filter capacitor C1 is used for connecting earth terminal, the other end of filter capacitor C1 connects one end of crystal oscillator pipe Y1, the other end of crystal oscillator pipe Y1 connects one end of filter capacitor C2, the other end of filter capacitor C2 is used for connecting earth terminal, the other end of filter capacitor C1 connects the XTAL1 pin of single-chip microcomputer U6, one end of filter capacitor C2 connects the XTAL2 pin of single-chip microcomputer U6.
Alternatively, power supply is the alternating current of 5V.
Alternatively, the model of single-chip microcomputer U6 is ATMEGA16.
Alternatively, the model of wireless sending module U1 is ZB-FSK-2A.
Alternatively, the model of wireless receiving module U2 is XY-R03A.
Alternatively, the model of decoding chip U3 is PT2272.
Alternatively, the model of temperature sensor U7 is DS18B20.
Alternatively, the model of charactron U8 is 7SEG.
Wherein, the principle of work of the wireless temperature measuring device shown in Fig. 2 is: S1 is switch, U1 is wireless sending module, U2 is wireless receiving module, U3 is decoding chip, U4 is control module, U6 is single-chip microcomputer, U7 is temperature sensor, C5 is filter capacitor, R1 is current-limiting resistance, S2 is switch, C1 ~ C4 is filter capacitor, Y1 is crystal oscillator pipe, U5 is charactron; When switch S 1 closes, thermometric instruction is sent to wireless receiving module U2 by wireless sending module U1, wireless receiving module U2 receives thermometric instruction and thermometric instruction is sent to decoding chip U3, after decoding chip U3 receives thermometric instruction, thermometric instruction decoding is sent to single-chip microcomputer U6, now, the data output end of decoding chip U3 is high level, when single-chip microcomputer U6 detects this high level, the temperature value that temperature sensor U7 tests is sent to charactron U5 by single-chip microcomputer U6, and charactron U5 receives the temperature value of single-chip microcomputer U6 transmission and shows this temperature value; When switch S 1 disconnects, wireless sending module U1 does not send thermometric instruction, and now, the data output end of decoding chip U3 is low level, and single-chip microcomputer U6 does not detect high level, and single-chip microcomputer U6 does not send temperature value to charactron, and charactron is displays temperature value not; Wherein, filter capacitor C1 ~ C2 and crystal oscillator pipe Y1 forms crystal oscillating circuit, and this crystal oscillating circuit is for generation of clock signal; Current-limiting resistance R1, switch S 2, filter capacitor C3 ~ C4 form reset circuit, and this reset circuit is used for resetting when this device goes wrong.
Above, be exactly scheme and the principles and methods of the embodiment of the present invention 2, summing up is exactly send thermometric instruction by switch control rule wireless sending module, after microprocessor detect to this thermometric instruction, the temperature value that temperature sensor is tested is sent to charactron, the temperature value of numeral method test.
Wireless temperature measuring device disclosed in the embodiment of the present invention, for realizing the wireless connections sending thermometric instruction and receive between thermometric instruction unit, is convenient to Distance Test temperature, to ensure the safety of tester
Above the wireless temperature measuring device that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a wireless temperature measuring device, is characterized in that, comprising:
Switch S 1, wireless sending module U1, wireless receiving module U2, decoding chip U3, control module U4, charactron U5, wherein:
One end of described switch S 1 is used for connecting earth terminal, the other end of described switch S 1 connects the input end 2 of described wireless sending module U1, the input end 1 of described wireless sending module U1 is for connecting power supply, the input end 6 of described wireless sending module U1 is for connecting earth terminal, the output terminal 1 of described wireless receiving module U2 is for connecting earth terminal, the output terminal 2 of described wireless receiving module U2 is connected the data input pin DIN of described decoding chip U3 with 3, the output terminal 4 of described wireless receiving module U2 is for connecting power supply, the data output end D2 of described decoding chip U3 connects the input end IN of described control module U4, the output terminal 1-8 of described control module U4 connects the sheet choosing end a of described charactron U5 respectively, b, c, d, e, f, g, DP, the output terminal 9 and 10 of described control module U4 is connected position choosing end A1 and A2 of described charactron U5 respectively, described switch S 1 is for controlling the duty of wireless temperature measuring device, described wireless sending module U1 is used for, after described switch S 1 is closed, sending thermometric instruction to described wireless receiving module U2, the described thermometric instruction that described wireless receiving module U2 sends for receiving described wireless transmitter module U1, and described thermometric instruction is sent to described decoding chip U3, the described thermometric instruction that described decoding chip U3 sends for receiving described wireless receiving module U2, and described thermometric instruction is decoded, and decoded thermometric instruction is sent to described control module U4, the described decoded thermometric instruction that described control module U4 sends for receiving described decoding chip U3, and according to described decoded thermometric instruction testing temperature, and the temperature value of test is sent to described charactron U5, the described temperature value that described charactron U5 sends for receiving described control module U4, and described temperature value is shown.
2. device as claimed in claim 1, it is characterized in that, described control module U4 comprises single-chip microcomputer U6, temperature sensor U7, filter capacitor C5, wherein:
The PB0 pin of the B I/O port of described single-chip microcomputer U6 connects the data output end D2 of described decoding chip U3, the PD0 pin of the D I/O port of described single-chip microcomputer U6 connects the data I/O end of described temperature sensor U7, the earth terminal GND of described temperature sensor U7 is used for connecting earth terminal, the power end VCC of described temperature sensor U7 is for connecting power supply, the GND pin of described single-chip microcomputer U6 is used for connecting earth terminal, the AREF pin of described single-chip microcomputer U6 is for connecting one end of described filter capacitor C5, the other end of described filter capacitor C5 is used for connecting earth terminal, AVCC with the VCC pin of described single-chip microcomputer U6 is for being connected power supply, the PC0-PC7 pin of the C I/O port of described single-chip microcomputer U6 connects the sheet choosing end a of described charactron U5 respectively, b, c, d, e, f, g, DP, PA0 with the PA1 pin of the A I/O port of described single-chip microcomputer U6 is connected position choosing end A1 and A2 of described charactron U5 respectively.
3. device as claimed in claim 2, it is characterized in that, described control module U4 also comprises:
Current-limiting resistance R1, switch S 2, filter capacitor C1 ~ C4, crystal oscillator pipe Y1, wherein:
One end of described current-limiting resistance R1 is for connecting power supply, the other end of described current-limiting resistance R1 connects one end of described switch S 2, the other end of described switch S 2 is used for connecting earth terminal, described filter capacitor C3 is connected in parallel described switch S 2, described filter capacitor C4 is connected in parallel described filter capacitor C3, the other end of described current-limiting resistance R1 connects the RESET pin of described single-chip microcomputer U6, one end of described filter capacitor C1 is used for connecting earth terminal, the other end of described filter capacitor C1 connects one end of described crystal oscillator pipe Y1, the other end of described crystal oscillator pipe Y1 connects one end of described filter capacitor C2, the other end of described filter capacitor C2 is used for connecting earth terminal, the other end of described filter capacitor C1 connects the XTAL1 pin of described single-chip microcomputer U6, one end of described filter capacitor C2 connects the XTAL2 pin of described single-chip microcomputer U6.
4. the device as described in any one of claims 1 to 3, is characterized in that, described power supply is the alternating current of 5V.
5. device as claimed in claim 2 or claim 3, it is characterized in that, the model of described single-chip microcomputer U6 is ATMEGA16.
6. the device as described in any one of claims 1 to 3, is characterized in that, the model of described wireless sending module U1 is ZB-FSK-2A.
7. the device as described in any one of claims 1 to 3, is characterized in that, the model of described wireless receiving module U2 is XY-R03A.
8. the device as described in any one of claims 1 to 3, is characterized in that, the model of described decoding chip U3 is PT2272.
9. device as claimed in claim 2 or claim 3, it is characterized in that, the model of described temperature sensor U7 is DS18B20.
10. the device as described in any one of claims 1 to 3, is characterized in that, the model of described charactron U8 is 7SEG.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539155.8A CN104616465A (en) | 2013-11-04 | 2013-11-04 | Wireless temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310539155.8A CN104616465A (en) | 2013-11-04 | 2013-11-04 | Wireless temperature measuring device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064398A (en) * | 2007-03-15 | 2007-10-31 | 暨南大学 | Remote control socket system and its wireless remote control method |
| CN101419747A (en) * | 2007-10-25 | 2009-04-29 | 鸿富锦精密工业（深圳）有限公司 | Multimedia courseware remote controlling system, wireless transmitting device and wireless receiving device thereof |
| CN201583855U (en) * | 2010-01-05 | 2010-09-15 | 深圳市德泽能源科技有限公司 | Control circuit of novel oil-filled type heater |
| CN102222404A (en) * | 2010-04-14 | 2011-10-19 | 鸿富锦精密工业（深圳）有限公司 | Wireless remote control device |
| CN203151484U (en) * | 2012-10-31 | 2013-08-21 | 佛山市顺德区瑞德电子实业有限公司 | Wireless transmitting and receiving circuit |
-
2013
- 2013-11-04 CN CN201310539155.8A patent/CN104616465A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101064398A (en) * | 2007-03-15 | 2007-10-31 | 暨南大学 | Remote control socket system and its wireless remote control method |
| CN101419747A (en) * | 2007-10-25 | 2009-04-29 | 鸿富锦精密工业（深圳）有限公司 | Multimedia courseware remote controlling system, wireless transmitting device and wireless receiving device thereof |
| CN201583855U (en) * | 2010-01-05 | 2010-09-15 | 深圳市德泽能源科技有限公司 | Control circuit of novel oil-filled type heater |
| CN102222404A (en) * | 2010-04-14 | 2011-10-19 | 鸿富锦精密工业（深圳）有限公司 | Wireless remote control device |
| CN203151484U (en) * | 2012-10-31 | 2013-08-21 | 佛山市顺德区瑞德电子实业有限公司 | Wireless transmitting and receiving circuit |
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