CN104075816B - Electric field induction power taking type wireless temperature measurement system and frequency communication method thereof - Google Patents
Electric field induction power taking type wireless temperature measurement system and frequency communication method thereof Download PDFInfo
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- CN104075816B CN104075816B CN201310229509.9A CN201310229509A CN104075816B CN 104075816 B CN104075816 B CN 104075816B CN 201310229509 A CN201310229509 A CN 201310229509A CN 104075816 B CN104075816 B CN 104075816B
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 53
- 238000004891 communication Methods 0.000 title claims abstract description 42
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 28
- 230000005684 electric field Effects 0.000 title claims abstract description 24
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 9
- 230000000087 stabilizing Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003365 glass fiber Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000003287 optical Effects 0.000 description 3
- 238000010897 surface acoustic wave method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000001627 detrimental Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a kind of electric field induction power taking type wireless temperature measurement system, including multiple wireless temperature-measuring terminals, multiple data sink and management terminal, described wireless temperature-measuring terminal includes single-chip microcomputer, electrostatic induction power source, hygrosensor and radio frequency communication module.Electric field induction power taking type wireless temperature measurement system of the present invention, electrostatic induction power source in its wireless temperature-measuring terminal uses the least sensing pole plate to obtain faradic current, and faradic current is converted into is available for the electric current that wireless temperature-measuring terminal normally works, solve and be traditionally used for the problem that the temperature measuring equipment of high pressure equipment needs the duty being additionally provided power supply or power supply to be not sufficiently stable, and the frequency communication method that its wireless temperature-measuring terminal uses can be applicable to this electrostatic induction power source, the present invention the most also has easy for installation, volume is little, low cost, and the inconspicuous former Electric Field Distribution of change equipment and the advantage of original security parameter.
Description
Technical field
The present invention relates to a kind of temp measuring system for high pressure equipment, particularly relate to a kind of electric field induction power taking type
Wireless temperature measurement system and frequency communication method thereof.
Background technology
Analyzing according to statistics, the etesian electric power accident of China, it is overheated caused by high voltage electric equipment for having 40%；
Switch, disconnecting link, cable connecting part position contact resistance become big, overload etc. and easily cause connector temperature too high,
Cause equipment operation failure.Therefore, the variations in temperature of power equipment, particularly electric connecting point is carried out reality
Time monitoring and early warning be very important.But high pressure equipment has strict demand, traditional galvanic couple thermometric to insulation
Cannot use on power equipment.
Current domestic commonly used infrared measurement of temperature, active radio thermometric, optical fiber temperature-measurement, SAW surface acoustic wave sense
Device thermometric, five kinds of modes of current transformer power taking wireless temperature measurement.Infrared measurement of temperature is i.e. by manually holding infrared one-tenth
As instrument alignment body surface is directly measured, it can only measure the surface temperature of object, is also easy to by ambient temperature
Impact, the shortcoming of its maximum is must be by manual operation, it is impossible to realize on-line monitoring；Active radio thermometric
Being the less radio-frequency pattern using Micro Energy Lose design, device uses lithium Fe battery to power, and the most domestic generally adopts
Carrying out thermometric by this pattern, but the at high temperature situation such as explosive and leakage deposited by battery, battery is at high temperature
For Electric Power Equipment Insulation oil detrimental effects, there is problem in service life in the gas of discharge conduction and liquid simultaneously,
Need after commonly using 3-5 to change battery；Optical fiber temperature-measurement uses grating temperature probe to be arranged on point for measuring temperature,
Using optical cable transmission optical signal, the Fiber isolation high pressure that optical fiber temperature-measurement passes through also exists creeping discharge problem, at electricity
On power equipment, layout and the cabling of optical cable are the most extremely difficult, and the high general user of cost is difficult to use on a large scale,
There is temperature drift phenomenon additionally, due to grating temperature transducer, need to take off after using 2-3 and again check temperature
The situation of scale；SAW surface acoustic wave sensor thermometric uses SAW SAW Temperature Sensors, uses
American technology, is also passive operation modes, and SAW surface acoustic wave sensor thermometric mode needs near measured point
Cabinet in install induction antenna, reduce the arcing distance of equipment, reduce high voltage protection grade, and
Signal is highly unstable, and acoustic current surface wave sensor information receives qualification rate and is not higher than 70%；Current transformer
Power taking wireless temperature measurement, needs to install current transformer at positions such as busbars, replaces active radio temp measuring system
Battery power pack, but the current transformer volume installed is relatively big, will reduce busbar phase spacing, and destruction sets
Standby insulation and electromagnetic field, the most fatal be weak current in the case of, device is difficult to reliable and stable work.Tradition nothing
The energy that electrostatic induction electrode in the temperature measuring equipment of source obtains is high voltage, weak current rank, commutator
Input current only has 0.8uA, and the electric current that electronic device is revealed, more than 2uA, according to conventional switching power supply, is let out
Dew electric current is more than input current, and temperature measuring equipment cannot be stablized and normally works.
Summary of the invention
The purpose of the present invention is that provides one can need not in high voltage electric field to solve the problems referred to above
In the case of external power source, obtain electric flux by electrostatic induction power source, ensure the wireless temperature measurement self worked
System.
In order to achieve the above object, present invention employs techniques below scheme:
A kind of electric field induction power taking type wireless temperature measurement system, connects including multiple wireless temperature-measuring terminals, multiple data
Receiving device and management terminal, the signal output part of multiple described wireless temperature-measuring terminals connects with multiple described data respectively
Receive device signal input part connect, the signal input part of described management terminal respectively with multiple described data receivers
The signal output part of device connects, and described wireless temperature-measuring terminal includes that single-chip microcomputer, electrostatic induction power source, temperature are visited
Survey the electricity of device and radio frequency communication module, the voltage output end of described electrostatic induction power source and described single-chip microcomputer
Pressure input connects, and the signal output part of described hygrosensor is connected with the signal input part of described single-chip microcomputer,
The FPDP of described single-chip microcomputer is connected with the FPDP of described radio frequency communication module, described electrostatic sense
Answer power supply include induction electrode, bridge rectifier, switch, inductance, the first diode, the first electric capacity,
Second electric capacity, the 3rd electric capacity and mu balanced circuit, the first ac input end of described bridge rectifier is with described
Induction electrode connects, and the second ac input end of described bridge rectifier is connected with electrical body, described bridge-type
The cathode output end of rectification circuit connects with the first end of described first electric capacity and the first end of described switch respectively
Connect, the cathode output end of described bridge rectifier respectively with the second end of described first electric capacity, described second
First end of electric capacity, the positive pole of described first diode, the first end of described 3rd electric capacity and described voltage stabilizing electricity
The first input end on road connects, the second end of described switch respectively with the second end of described second electric capacity, described
First end of the negative pole of the first diode and described inductance connects, and the second end of described inductance is respectively with described the
Second end of three electric capacity and the second input of described mu balanced circuit connect, and the outfan of described mu balanced circuit is
The voltage output end of described electrostatic induction power source.
The electric current of uA rank can be converted to mA level currents by described electrostatic induction power source.
Specifically, described rectification circuit include linear voltage regulator, voltage detector, Zener diode, first
Resistance, the second resistance, the 3rd resistance, the second diode, the 3rd diode, described Zener diode is just
Pole and negative pole are respectively first input end and second input of described mu balanced circuit, described Zener diode
Negative pole respectively with the first end of described first resistance, the positive pole of described 3rd diode and described linear voltage regulator
Input connect, the positive pole of described Zener diode be connected with the outfan of described voltage detector after ground connection,
The outfan of described voltage detector is the first outfan of described mu balanced circuit, the second of described first resistance
End negative pole with the first input end of described voltage detector and described second diode respectively is connected, and described the
The negative pole of three diodes is connected with the first end of described second resistance, the second end of described second resistance respectively with
First outfan of the second input of described voltage detector and described linear voltage regulator connects, described linearly
Second outfan of manostat is connected with the first end of described 3rd resistance, and the second of described linear voltage regulator is defeated
Go out the end the second outfan for described mu balanced circuit, the second end of described 3rd resistance and described second diode
Positive pole connect.
A kind of frequency communication method of electric field induction power taking type wireless temperature measurement system, described electric field induction power taking type
Radio-frequency communication is carried out, including following between radio frequency communication module and the data sink of wireless temperature measurement system
Step:
(1) the temperature detection chip of single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
Carry out self-inspection respectively, enter next step；
(2) the temperature detection chip of single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
Time delay 10ms respectively, waits power source charges, enters next step；
(3) judge whether the channel between data sink and hygrosensor is empty, enter next step；
(4) if the channel between data sink and hygrosensor is empty, then step (5) is entered, if number
It is not empty according to the channel between receptor and hygrosensor, then enters step (2)；
(5) data message is sent to data sink by radio frequency communication module, and waits data sink
Reply, enter next step；
(6) if receiving the reply of data sink, then step (7) is entered, if not receiving data sink
Reply, then enter step (2)；
(7) voltage of electrostatic induction power source is detected, and judge whether voltage is to support single-chip microcomputer, nothing
The voltage that the radio frequency chip of line radio-frequency communication module and the temperature detection chip of hygrosensor normally work, enters
Enter next step；
(8) if voltage is to support single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
The voltage that normally works of temperature detection chip, then enter step (9), if voltage for can not support single-chip microcomputer,
The voltage that the radio frequency chip of radio frequency communication module and the temperature detection chip of hygrosensor normally work,
Then enter step (10)；
(9) obtain length time delay of depositor in single-chip microcomputer, and enter next step；
(10) single-chip microcomputer postpones according to clock timing, enters step (3)；
(11) wait power source charges, when voltage arrives normal working voltage, enter step (1).
The beneficial effects of the present invention is:
Electric field induction power taking type wireless temperature measurement system of the present invention and frequency communication method, its wireless temperature-measuring terminal
In electrostatic induction power source use the least sensing pole plate to obtain faradic current, and be converted into by faradic current can
The electric current normally worked for wireless temperature-measuring terminal, solves the temperature measuring equipment needs being traditionally used for high pressure equipment
It is additionally provided power supply or the problem that the duty of power supply is not sufficiently stable, and its wireless temperature-measuring terminal uses
Frequency communication method can be applicable to this electrostatic induction power source, the present invention the most also has easy for installation, body
Amass little, low cost and the inconspicuous former Electric Field Distribution of change equipment and the advantage of original security parameter.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of electric field induction power taking type wireless temperature measurement system of the present invention；
Fig. 2 is the structural frames of the wireless temperature-measuring terminal of electric field induction power taking type wireless temperature measurement system of the present invention
Figure；
Fig. 3 is the circuit diagram of the electrostatic induction power source of electric field induction power taking type wireless temperature measurement system of the present invention；
Fig. 4 is the circuit diagram of the rectification circuit of electric field induction power taking type wireless temperature measurement system of the present invention；
Fig. 5 is the radio-frequency communication flow chart of electric field induction power taking type wireless temperature measurement system of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Figure 1, Figure 2 and Figure 3, electric field induction power taking type wireless temperature measurement system of the present invention, including multiple
Wireless temperature-measuring terminal, multiple data sink and management terminal, the signal of multiple described wireless temperature-measuring terminals is defeated
Go out the end signal input part respectively with multiple described data sinks to be connected, the signal input of described management terminal
End signal output part with multiple described data sinks respectively is connected, and described wireless temperature-measuring terminal includes monolithic
Machine, electrostatic induction power source, hygrosensor and radio frequency communication module, the electricity of described electrostatic induction power source
Pressure outfan is connected with the voltage input end of described single-chip microcomputer, the signal output part of described hygrosensor and institute
The signal input part stating single-chip microcomputer connects, the FPDP of described single-chip microcomputer and described radio frequency communication module
FPDP connect, electrostatic induction power source include induction electrode, bridge rectifier BR, switch K, electricity
Sense L, the first diode D1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3 and mu balanced circuit IC1,
First ac input end of bridge rectifier BR is connected with induction electrode, the second of bridge rectifier BR
Ac input end is connected with electrical body, the cathode output end of bridge rectifier BR respectively with the first electric capacity C1
The first end and switch K first end connect, the cathode output end of bridge rectifier BR respectively with first electricity
Hold second end of C1, first end of the second electric capacity C2, the positive pole of the first diode D1, the 3rd electric capacity C3
The first end and mu balanced circuit IC1 first input end connect, switch K the second end respectively with the second electric capacity
First end of second end of C2, the negative pole of the first diode D1 and inductance connects, and second end of inductance L is respectively
Being connected with second end of the 3rd electric capacity C3 and second input of mu balanced circuit IC1, mu balanced circuit IC1's is defeated
Go out the end voltage output end for electrostatic induction power source.
The electric current of uA rank can be converted to mA level currents by electrostatic induction power source.
As shown in Figure 4, mu balanced circuit IC1 includes linear voltage regulator LD, voltage detector IC2, voltage stabilizing two
Pole pipe ZD, the first resistance R1, the second resistance R2, the 3rd resistance R3, the second diode D2, the three or two pole
Pipe D3, the positive pole of Zener diode ZD and negative pole are respectively the first input end of mu balanced circuit IC1 and second defeated
Entering end, the negative pole of Zener diode ZD is respectively with first end of the first resistance R1, the 3rd diode D3 just
The input of pole and linear voltage regulator LD connects, and the positive pole of Zener diode ZD is with voltage detector IC2's
Ground connection after outfan connection, the outfan of voltage detector IC2 is first outfan of mu balanced circuit IC1,
Second end of the first resistance R1 respectively with the first input end of voltage detector IC2 and the second diode D2
Negative pole connects, and the negative pole of the 3rd diode D3 and first end of the second resistance R2 connect, the second resistance R2's
Second end connects with second input of voltage detector IC2 and first outfan of linear voltage regulator LD respectively
Connecing, second outfan of linear voltage regulator LD and first end of the 3rd resistance R3 connect, linear voltage regulator LD
The second outfan that the second outfan is mu balanced circuit IC1, second end of the 3rd resistance R3 and the two or two pole
The positive pole of pipe D2 connects.
As it is shown in figure 5, the frequency communication method of a kind of electric field induction power taking type wireless temperature measurement system, described electricity
Carry out radio frequency between radio frequency communication module and the data sink of field sensing power taking type wireless temperature measurement system to lead to
News, comprise the following steps:
(1) the temperature detection chip of single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
Carry out self-inspection respectively, enter next step；
(2) the temperature detection chip of single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
Time delay 10ms respectively, waits power source charges, enters next step；
(3) judge whether the channel between data sink and hygrosensor is empty, enter next step；
(4) if the channel between data sink and hygrosensor is empty, then step (5) is entered, if number
It is not empty according to the channel between receptor and hygrosensor, then enters step (2)；
(5) data message is sent to data sink by radio frequency communication module, and waits data sink
Reply, enter next step；
(6) if receiving the reply of data sink, then step (7) is entered, if not receiving data sink
Reply, then enter step (2)；
(7) voltage of electrostatic induction power source is detected, and judge whether voltage is to support single-chip microcomputer, nothing
The voltage that the radio frequency chip of line radio-frequency communication module and the temperature detection chip of hygrosensor normally work, enters
Enter next step；
(8) if voltage is to support single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
The voltage that normally works of temperature detection chip, then enter step (9), if voltage for can not support single-chip microcomputer,
The voltage that the radio frequency chip of radio frequency communication module and the temperature detection chip of hygrosensor normally work,
Then enter step (10)；
(9) obtain length time delay of depositor in single-chip microcomputer, and enter next step；
(10) single-chip microcomputer postpones according to clock timing, enters step (3)；
(11) wait power source charges, when voltage arrives normal working voltage, enter step (1).
The operation principle using electric field induction power taking type wireless temperature measurement system of the present invention is as follows:
By forming sensing between the induction electrode being connected with electrical body and adjacent different phase conductor, equipment live casing
Electric capacity, forms faradic current under alternating voltage, and faradic current is through bridge rectifier BR rectification, to first
Electric capacity C1 charges, when being charged to maximum, and switch K conducting, inductance L produces faradic current；With
One electric capacity C1 electric discharge, when its voltage drops to minimum, switch K closes, by the first diode D1 afterflow,
Until inductance L magnetic energy exhausts, when the first electric capacity C1 again charges up to maximum, start next work week
Phase.3rd electric capacity C3 is charged by the faradic current of inductance L in the course of the work, the 3rd electric capacity C3 voltage warp
Mu balanced circuit IC1 controls to export with 3.3V.
In order to expand the voltage utilization on the 3rd electric capacity C3, it is desirable to the operating voltage range of the 3rd electric capacity C3
Relatively big, and voltage checking chip only has 5% return difference the most on the market, it is impossible to meet and it is controlled needs.This
Bright employing linear voltage regulator LD seals in voltage detector IC2 current supply circuit and introduces Voltage Feedback, thus obtains
The return difference of 5.4V～3.3V controls, and the voltage of the i.e. the 3rd electric capacity C3 opens linear voltage regulator LD after rising to 5.4V
Output, this linear voltage regulator LD is low pressure difference linear voltage regulator, and the 3rd electric capacity C3 voltage closes less than during 3.3V
The output of closed linear manostat LD, makes load obtain normal voltage, it is to avoid because power supply output is slowly set up
Single-chip microcomputer in electrical equipment is caused to produce fault because of electricity shortage.
Power supply provides pattern of short duration, low-energy, and corresponding wireless communication mode is efficient, Micro Energy Lose
Communication.Wireless radio frequency modules after the power-up, is rapidly completed process of self-test, then listens for channel the most idle,
If free time, instantaneous transmission data, and verify whether to send successfully, if channel is the most idle, after random delay
Again send.
The present invention uses high pressure diac to make the circuit can be at input current as the switching device of buck topology
Working less than under the electric current of microampere, and be followed by the second electric capacity C2 at the switching device that buck is topological, traditional opens
Closing in power supply buck topological structure, switching device output does not meet the second electric capacity C2, is provided with the second electric capacity
C2 could ensure the conversion efficiency of switching device.The more conventional power circuit of value of the first electric capacity C1 in the present invention
In much smaller, the first electric capacity C1 uses the electric capacity of pico farad level, reduces the electric leakage of electric capacity, also carries simultaneously
The operating frequency of high switch.
Claims (3)
1. an electric field induction power taking type wireless temperature measurement system, including multiple wireless temperature-measuring terminals, multiple data
Receptor and management terminal, the signal output part of multiple described wireless temperature-measuring terminals respectively with multiple described data
The signal input part of receptor connects, and the signal input part of described management terminal connects with multiple described data respectively
The signal output part receiving device connects, and described wireless temperature-measuring terminal includes single-chip microcomputer, electrostatic induction power source, temperature
Detector and radio frequency communication module, the voltage output end of described electrostatic induction power source and described single-chip microcomputer
Voltage input end connects, and the signal output part of described hygrosensor connects with the signal input part of described single-chip microcomputer
Connecing, the FPDP of described single-chip microcomputer is connected with the FPDP of described radio frequency communication module, its feature
Be: described electrostatic induction power source include induction electrode, bridge rectifier, switch, inductance, the one or two
Pole pipe, the first electric capacity, the second electric capacity, the 3rd electric capacity and mu balanced circuit, the first of described bridge rectifier
Ac input end is connected with described induction electrode, and the second ac input end of described bridge rectifier is with charged
Body connects, the cathode output end of described bridge rectifier respectively with the first end of described first electric capacity and described
First end of switch connects, the cathode output end of described bridge rectifier respectively with the of described first electric capacity
Two ends, the first end of described second electric capacity, the positive pole of described first diode, the first of described 3rd electric capacity
End and described mu balanced circuit first input end connect, the second end of described switch respectively with described second electric capacity
The second end, the negative pole of described first diode and described inductance first end connect, the second of described inductance
End is connected with described second end of the 3rd electric capacity and the second input of described mu balanced circuit respectively, described voltage stabilizing
The outfan of circuit is the voltage output end of described electrostatic induction power source.
Electric field induction power taking type wireless temperature measurement system the most according to claim 1, it is characterised in that: institute
State mu balanced circuit include linear voltage regulator, voltage detector, Zener diode, the first resistance, the second resistance,
3rd resistance, the second diode, the 3rd diode, the positive pole of described Zener diode and negative pole are respectively institute
Stating first input end and second input of mu balanced circuit, the negative pole of described Zener diode is respectively with described
The input of the first end of one resistance, the positive pole of described 3rd diode and described linear voltage regulator connects, institute
The outfan of the positive pole and described voltage detector of stating Zener diode be connected after ground connection, described voltage detector
The first outfan that outfan is described mu balanced circuit, the second end of described first resistance respectively with described electricity
The first input end of pressure detector and the negative pole of described second diode connect, the negative pole of described 3rd diode
Be connected with the first end of described second resistance, the second end of described second resistance respectively with described voltage detector
The second input and described linear voltage regulator first outfan connect, the second of described linear voltage regulator is defeated
Going out end to be connected with the first end of described 3rd resistance, the second outfan of described linear voltage regulator is described voltage stabilizing
Second outfan of circuit, the second end of described 3rd resistance is connected with the positive pole of described second diode.
3. the radio-frequency communication side of an electric field induction power taking type wireless temperature measurement system as claimed in claim 1
Method, is carried out between radio frequency communication module and the host computer of described electric field induction power taking type wireless temperature measurement system
Radio-frequency communication, it is characterised in that comprise the following steps:
(1) the temperature detection chip of single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
Carry out self-inspection respectively, enter next step；
(2) the temperature detection chip of single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
Time delay 10ms respectively, waits power source charges, enters next step；
(3) judge whether the channel between data sink and hygrosensor is empty, enter next step；
(4) if the channel between data sink and hygrosensor is empty, then step (5) is entered, if number
It is not empty according to the channel between receptor and hygrosensor, then enters step (2)；
(5) data message is sent to data sink by radio frequency communication module, and waits data sink
Reply, enter next step；
(6) if receiving the reply of data sink, then step (7) is entered, if not receiving data sink
Reply, then enter step (2)；
(7) voltage of electrostatic induction power source is detected, and judge whether voltage is to support single-chip microcomputer, nothing
The voltage that the radio frequency chip of line radio-frequency communication module and the temperature detection chip of hygrosensor normally work, enters
Enter next step；
(8) if voltage is to support single-chip microcomputer, the radio frequency chip of radio frequency communication module and hygrosensor
The voltage that normally works of temperature detection chip, then enter step (9), if voltage for can not support single-chip microcomputer,
The voltage that the radio frequency chip of radio frequency communication module and the temperature detection chip of hygrosensor normally work,
Then enter step (10)；
(9) obtain length time delay of depositor in single-chip microcomputer, and enter next step；
(10) single-chip microcomputer postpones according to clock timing, enters step (3)；
(11) wait power source charges, when voltage arrives normal working voltage, enter step (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310229509.9A CN104075816B (en) | 2013-06-09 | Electric field induction power taking type wireless temperature measurement system and frequency communication method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310229509.9A CN104075816B (en) | 2013-06-09 | Electric field induction power taking type wireless temperature measurement system and frequency communication method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104075816A CN104075816A (en) | 2014-10-01 |
| CN104075816B true CN104075816B (en) | 2016-11-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532262U (en) * | 2009-11-09 | 2010-07-21 | 厦门立林高压电气有限公司 | High-voltage switch contact and bus on-line temperature measuring device |
| CN201673587U (en) * | 2010-04-19 | 2010-12-15 | 北京国电力成科技有限公司 | Operating temperature monitor for high-voltage equipment |
| CN201680923U (en) * | 2009-12-18 | 2010-12-22 | 杭州休普电子技术有限公司 | Wireless temperature sensing device |
| CN202869683U (en) * | 2012-10-25 | 2013-04-10 | 宁夏电力公司银川供电局 | Self-powered high-voltage insulating switch contact temperature on-line measuring device with cylindrical electric field sensor board |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532262U (en) * | 2009-11-09 | 2010-07-21 | 厦门立林高压电气有限公司 | High-voltage switch contact and bus on-line temperature measuring device |
| CN201680923U (en) * | 2009-12-18 | 2010-12-22 | 杭州休普电子技术有限公司 | Wireless temperature sensing device |
| CN201673587U (en) * | 2010-04-19 | 2010-12-15 | 北京国电力成科技有限公司 | Operating temperature monitor for high-voltage equipment |
| CN202869683U (en) * | 2012-10-25 | 2013-04-10 | 宁夏电力公司银川供电局 | Self-powered high-voltage insulating switch contact temperature on-line measuring device with cylindrical electric field sensor board |
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