CN205002895U - Passive temperature measuring device - Google Patents
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- CN205002895U CN205002895U CN201520769477.6U CN201520769477U CN205002895U CN 205002895 U CN205002895 U CN 205002895U CN 201520769477 U CN201520769477 U CN 201520769477U CN 205002895 U CN205002895 U CN 205002895U
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a passive temperature measuring device, collect circuit, microprocessor, radio frequency emission circuit and sensor circuit including the energy. The energy is collected the circuit and is linked to each other with microprocessor, radio frequency emission circuit and sensor circuit respectively, and for above -mentioned circuit output power supply, microprocessor connects radio frequency emission circuit and sensor circuit, and sensor circuit connect temperature sensor, radio frequency emission circuit pass through radio -frequency antenna transmission, radio frequency emission 0 signal. The utility model discloses an energy is collected the circuit and is used passive electromagnetic induction to get the circuit be secondary source as main power source, vibrations induction electricity -taking circuit, and flexible battery is stand -by power supply, has increased power supply redundancy and has backed up, has improved the power supply stability who installs.
Description
Technical field
The utility model relates to switch cubicle temperature measuring equipment, particularly relates to a kind of passive temperature measuring equipment adopting passive power taking.
Background technology
High-tension switch cabinet is the important electrical of generating plant, transformer station.At present, high-tension switch cabinet generally all adopts plug-type to connect, in During Process of Long-term Operation, be easy to because the position such as contact or bus bar junction is transshipped for a long time, joint looseness and the aging contact resistance that causes of contact become large and generate heat, contact or bus bar junction temperature is caused to raise, and then cause its contact resistance to become large further, form vicious cycle, final proximity switch cabinet fault.In recent years, there is the major accidents such as a lot of fire of causing because switch cubicle is overheated and large-area power failure in power plant, transformer station, Real-Time Monitoring switch cabinet temperature, confirms switch cabinet temperature in allowed limits, is to stop the key that this type of accident occurs.
But the contact running temperature in high-tension switch cabinet is difficult to detect, this is mainly because have high pressure, narrow space mostly to be again closed in cabinet, existing temperature measuring equipment volume is excessive, cannot be arranged on moving contact, is generally fixed on and limits on less static contact box the volume of temperature measuring equipment.But need the whole transmission lines of electricity relevant to switch cubicle institute connection bus row to have a power failure when installation operates, cause large area to affect on normal production, especially for indivedual busy circuit, even causing temperature probe to be installed cannot implement smoothly owing to having a power failure.
In prior art, in order to reduce the volume of switch cubicle temperature measuring equipment, the power supply of temperature measuring equipment generally adopts single power supply to power.But do not having in big current situation, power supply exports the working power requirement that can not reach temperature measuring equipment, and device cannot work, Workshop Production debugging is extremely inconvenient, also stable not when engineering site uses.
Utility model content
The purpose of this utility model is to provide a kind of passive temperature measuring equipment, solves the problem that existing high-tension switch cabinet temperature measuring equipment adopts single power supply to power.
For solving the problem, the utility model provides a kind of passive temperature measuring equipment, comprises energy collection circuit, microprocessor, radio frequency transmitter circuitry and sensor circuit; Energy collection circuit is connected with sensor circuit with microprocessor, radio frequency transmitter circuitry respectively, for foregoing circuit exports power supply, microprocessor connects radio frequency transmitter circuitry and sensor circuit, sensor circuit connects temperature sensor, and radio frequency transmitter circuitry is launched by radio-frequency antenna, received RF signal; Energy collection circuit comprises passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit and battery, and described energy collection circuit is with passive electromagnetic induction power-supply circuit for primary power, and Vibration induction power-supply circuit is secondary source, and battery is standby power supply.
Optionally, described passive electromagnetic induction power-supply circuit connects induction electricity taking coil and receives electromagnetic wave, and electromagnetic wave is converted to electric energy.
Optionally, described energy collection circuit comprises power supply switch circuit, power protecting circuit and power state detection circuit; Passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit are connected the input end of power supply switch circuit with the output terminal of battery; the output terminal of power supply switch circuit connects the input end of power protecting circuit; the output terminal of power protecting circuit connects the power end of microprocessor, sensor circuit and radio frequency transmitter circuitry; passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit are connected the input end of power state detection circuit with the output terminal of battery, the output terminal of power state detection circuit connects microprocessor.
Optionally, described power supply switch circuit connects microprocessor, switches power supply under control of the microprocessor.
Optionally, described power state detection circuit comprises the first resistance, the first diode, the second diode and the first field effect transistor, resistance one end connects the power end of microprocessor, sensor circuit and radio frequency transmitter circuitry, the other end connects the first diode anode and the second diode anode respectively, first diode cathode connects the I/O port of microprocessor, second diode cathode connects the source electrode of the first field effect transistor, the output of the grounded drain of the first field effect transistor, grid connected with passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit and battery.
Optionally; described power protecting circuit comprises the low pressure detection chip of band watchdog function; the output terminal of the input end connection power supply switch circuit of low pressure detection chip, output terminal connect the grid of the second field effect transistor; the source electrode of the second field effect transistor is through the second resistance eutral grounding, the grid that drains through connecting the 3rd field effect transistor; the output terminal that drain electrode connects power end, source electrode connects power supply switch circuit of the 3rd field effect transistor, the output of low pressure detection chip also connects the reset pin of microprocessor through the 3rd resistance.
Optionally, described power protecting circuit comprises storage capacitor, and described storage capacitor connects power end.
Compared with prior art, the technical program has the following advantages:
1. energy collection circuit of the present utility model comprises passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit and battery, described energy collection circuit responds to power-supply circuit for primary power with passive electromagnetic, Vibration induction power-supply circuit is secondary source, battery is standby power supply, make the utility model have power redundancy backup, thus the Power supply of the existing switch cubicle temperature measuring equipment of final result is not enough, for the not high problem of electrical stability.
2. power protecting circuit of the present utility model comprises two storage capacitors; connect power end after two storage capacitor parallel connections, after making power outage of the present utility model, storage capacitor can also continue power supply; maintain microprocessor work a period of time, thus further increase the stability of system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flexible passive label of the utility model embodiment.
Fig. 2 is the structured flowchart of the flexible printed circuit board of the utility model embodiment.
Fig. 3 is the circuit theory diagrams of the power sense circuit of the utility model embodiment.
Fig. 4 is the circuit theory diagrams of the power protecting circuit of the utility model embodiment.
Fig. 5 is the structural representation of the passive flexible temperature measuring equipment of the utility model embodiment.
Fig. 6 is the scheme of installation of the passive flexible temperature measuring equipment of the utility model embodiment.
Fig. 7 is the structural representation of the MANET temp measuring system of the wireless power of the utility model embodiment.
Fig. 8 is another structural representation of the MANET temp measuring system of the wireless power of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, by specific embodiment, clear, complete description is carried out to the technical solution of the utility model.
The utility model discloses a kind of passive flexible temperature measuring equipment, comprise flexible passive label 100 and body 200.Flexible passive label 100 comprises soft shell 7, flexible printed circuit board and induction electricity taking coil 24.Soft shell 7 is silica gel shell, and flexible printed circuit board is encapsulated in soft shell 7, makes flexible printed circuit board not by external interference.
Please refer to Fig. 1, in the present embodiment, flexible printed circuit board comprises energy collection circuit 1, microprocessor 2, radio frequency transmitter circuitry 3, sensor circuit 4, temperature sensor 5 and ID storer 6.Energy collection circuit 1 is connected with ID storer 6 with microprocessor 2, radio frequency transmitter circuitry 3, sensor circuit 4 respectively, and as the power supply of microprocessor 2, radio frequency transmitter circuitry 3, sensor circuit 4 and ID storer 6; Sensor circuit 4 connects temperature sensor 5 and microprocessor 2 respectively, is processed by the detection signal of temperature sensor 5, transfers to microprocessor 2; ID storer 6 is connected with microprocessor 2, by the ID coding transmission of the flexible passive label 100 of storage to microprocessor 2; Radio frequency transmitter circuitry 3 is connected with microprocessor 2, receives or emitting radio frequency signal, after microprocessor obtains ID coding and temperature detection signal, by radio frequency transmitter circuitry emitting radio frequency signal.
Please refer to Fig. 2, in the present embodiment, energy collection circuit 1 comprises passive electromagnetic induction power-supply circuit 8, Vibration induction power-supply circuit 9, flexible battery 10, power supply switch circuit 11, power protecting circuit 12 and power state detection circuit 13.Passive electromagnetic induction power-supply circuit 8, Vibration induction power-supply circuit 9, flexible battery 10 are three separate power supplys, namely by arranging multiple power supply, add power supply redundancy backup.Passive electromagnetic induction power-supply circuit 8 receives electromagnetic wave by induction electricity taking coil 24, and electromagnetic wave is converted to electric energy; Vibration energy in environment residing for circuit is converted to electric energy by Vibration induction power-supply circuit 9; Flexible battery comprises flexible circuit board and solid electrolyte, and supply voltage is stablized, and volume is little, and can stretch cutting.
Passive electromagnetic induction power-supply circuit 8, Vibration induction power-supply circuit 9 and the output terminal of flexible battery 10 are connected the input end of power supply switch circuit 11 respectively, the output terminal of power supply switch circuit 11 connects the input end of power protecting circuit 12, and the output terminal of power protecting circuit 12 connects the power end of microprocessor 2, radio frequency transmitter circuitry 3, sensor circuit 4 and ID storer 6; Passive electromagnetic induction power-supply circuit 8, Vibration induction power-supply circuit 9 and the output terminal of flexible battery 10 are connected the input end of power state detection circuit 13 simultaneously, and power state detection circuit 13 pairs of passive electromagnetic inductions power-supply circuit 8, Vibration induction power-supply circuit 9 and flexible batteries 10 detect and export detection signal to microprocessor 2; Microprocessor 2 connects power supply switch circuit 11, selects by power supply switch circuit 11 power supply as reality meeting one of them of power requirement, and that improves device supplies electrical stability, facilitates Workshop Production to debug.
Usually, passive electromagnetic induction power-supply circuit 8 is primary power, Vibration induction power-supply circuit 9 is secondary source, flexible battery 10 is standby power supply, when passive electromagnetic induction power-supply circuit 8, when the output of Vibration induction power-supply circuit 9 and flexible battery 10 all meets power requirement, preferentially passive electromagnetic is responded to the output of power-supply circuit 8 as power supply, its second priority with the output of Vibration induction power-supply circuit 9 as power supply, only have when the output that passive electromagnetic responds to power-supply circuit 8 and Vibration induction power-supply circuit 9 does not meet the demands, just using flexible battery 10 as power supply.
Please refer to Fig. 3, in the present embodiment, power state detection circuit 13 comprises resistance R10, diode D9 and diode D10 and field effect transistor Q6.Resistance R10 one end connects the power end Vcc of microprocessor 2, sensor circuit 3 and radio frequency transmitter circuitry 1, and the other end connects diode D9 anode and diode D10 anode respectively; Diode D9 negative electrode VE connects the I/O pin of microprocessor; Diode D10 negative electrode connects the source electrode of field effect transistor Q6, the output terminal of the grounded drain of field effect transistor Q6, grid connected with passive electromagnetic induction power-supply circuit 10, Vibration induction power-supply circuit 11 and flexible battery 12.The normal output of passive electromagnetic induction power-supply circuit 8, Vibration induction power-supply circuit 9 and flexible battery 10 is 6.2V.Microprocessor utilizes the value at the diode D9 negative electrode VE place collected to judge the state of supply of current power, if the voltage of diode D9 negative electrode VE is by high step-down, then power supply is changed to Vibration induction power-supply circuit 9 or flexible battery 10 by passive electromagnetic induction power-supply circuit 8 powering mode.
Please refer to Fig. 4; in the present embodiment, power protecting circuit 12 comprises two storage capacitors C6, C8, and two storage capacitors C6, C8 are in parallel with power end Vcc; after power end Vcc power down, storage capacitor C6, C8 provide for microprocessor 2 storage power storing data, improve system stability.The time writing double copies 8 bytes due to microprocessor 2 is approximately 50ms, and electric current during write is about 2mA, and when the voltage of microprocessor 2 is 5V, the running current of microprocessor 2 is about 8mA.Suppose that storage capacitor discharges into 3.8V from 5V, can learn 0.05s × 0.01A/ (5V-3.8V)=417uF by calculating, therefore 1 capacitance in parallel is the storage power supply after the storage capacitor of 470uF can meet primary power power down completely on the power end Vcc of system.Be the electric capacity of 470uF to power end Vcc two capacitances in parallel, strengthen total capacitance of storage capacitor, improve memory capacity, ensure the storage power supply after meeting primary power power down completely.
Power protecting circuit 12 includes the low pressure detection chip U2 of band watchdog function, the input end of low pressure detection chip U2 connects the output terminal V of power supply switch circuit, the output terminal of low pressure detection chip U2 connects the grid of field effect transistor Q4, connects the RST reset pin of microprocessor 2 through resistance R9 simultaneously; The source electrode of field effect transistor Q4 connects the grid of field effect transistor Q2 through resistance R8 ground connection, drain electrode; The output terminal V that drain electrode connects power end Vcc, source electrode connects power supply switch circuit of field effect transistor Q2.When the output terminal V place voltage of power supply switch circuit is greater than the threshold value of low pressure detection chip U2, low pressure detection chip U2 exports as high, and field effect transistor Q2 switch disconnects, power end Vcc normal power supply; When the output terminal V place voltage of power supply switch circuit is less than the threshold value of low pressure detection chip U2, field effect transistor Q2 switch closes, power supply is dragged down and is stopped power supply, the RST reset pin of microprocessor 2 receives reset signal, microprocessor 2 resets, after resetting, power supply is stopped power supply, and storage capacitor C6, C8 continue as microprocessor 2 and power, and maintains microprocessor 2 and works a period of time.The threshold value of usual low pressure detection chip U2 is that 2.4V is comparatively suitable, both ensures stability, and does not disturb again the normal operation of temperature measuring equipment.
Described radio frequency transmitter circuitry 3 comprises radio-frequency antenna, radio-frequency antenna be arranged on flexible printed circuit board snakelike walk Wire antennas, reduce the area that takies of antenna, thus reduce the thickness of flexible passive label 100.In the present embodiment, the radiofrequency signal that radio frequency transmitter circuitry 3 is launched is the 433MHz radiofrequency signal that penetration power is strong, adapts to switch cubicle complex communication environment.In other embodiments, described radiofrequency signal is also can be the radio magnetic wave signal of other frequency range.
In the present embodiment, temperature sensor 5 is had inside described soft shell.In other embodiments, temperature sensor can be external outside soft shell, or respectively arrange a temperature sensor inside soft shell He outside soft shell.If be respectively provided with a temperature sensor inside soft shell He outside soft shell, sensor circuit 4 front end is also provided with sensor signal commutation circuit, the input end of the temperature sensor 5 inside soft shell and the temperature sensor difference connecting sensor signal switching circuit outside soft shell, the input end of the output terminal connecting sensor circuit 4 of sensor signal commutation circuit, guarantee that the signal of two temperature sensors is after sensor signal switches, and can transfer to microprocessor 2.In this case, if one of them temperature sensor damages, another proceeds temperature monitoring, improves reliability; And detect the inside and outside temperature of flexible passive label 100 simultaneously, improve temperature monitoring accuracy.
Please refer to Fig. 5, in the present embodiment, body 200 is flexible bar type bands, and flexible passive label 100 is encapsulated in body 200, simple installation, and makes flexible passive label 100 not by external interference, and reliability is high.Body 200 comprises the latch mechanism fixed position of a pilot hole 21 and several lugs 22.Pilot hole 21 is arranged on body 200 one end, and lug 22 is arranged at body 200 other end, and flexible passive label 100 is between pilot hole 21 and lug 22.Several lugs 22 are equidistantly distributed to body 200 end, and spacing is 2cm ~ 3cm, and the distance between flexible passive label 100 and pilot hole 21, distance between flexible passive label 100 and nearest lug 22 are all less than or equal to 1.5cm.
In the present embodiment, the tinfoil paper shape flexible metal alloy bar of the induction electricity taking coil 24 of passive flexible label 100 to be two thickness be 2mm, alloy bar is encapsulated in body 200, lay respectively at the both sides of flexible passive label 100, one end of the close flexible passive label 100 of two alloy bars connects the passive electromagnetic induction power-supply circuit 8 of flexible passive label 100, and the other end is fixed by the metal combination fixed sturcture 25,26 of similar button.
Please refer to Fig. 6, in the present embodiment, moving contact comprises dynamic plum blossom pawl 31, contact 32 and moving contact arm 30, and contact 32 is in cylindric, the junction 33 of plum blossom pawl 31 and contact 32 is also in cylindric, and the cross-sectional diameter of junction 33 is less than the cross-sectional diameter of contact 32.Because flexible passive label 100 volume is little, thickness is thin, therefore this passive flexible temperature measuring equipment is suitable for being arranged on herein.Concrete installation method is that this position is fixed around a circle along the surface of the junction 33 of plum blossom pawl 31 and contact 32 by body 200.During installation, body 200 end is through pilot hole 21, and when flexible passive label 100 is adjacent to moving contact, lug 22 inserts pilot hole 21, and its position is fixed.Because the spacing of lug 22 is little, in fixation procedure, compared with the degree of tightness of accurate adjustment body 200, can guarantee that moving contact is close to by flexible passive label 100.Body 200 is also provided with clasp 23, and body 200 tightens up through clasp 23 around the remaining part behind the surface of the junction 33 of plum blossom pawl 31 and contact 32, reduces the space taken on moving contact, prevents the work of the remaining part interference moving contact of body 200.
During installation, the metal combination fixed sturcture 25,26 of similar button is connected, the induction electricity taking coil 24 be encapsulated in body 200 becomes toroid winding with body 200, respond to power-supply circuit 8 with the passive electromagnetic in passive flexible label 100 and be connected to form a closed-loop path, electromagnetic wave is converted to electric signal.
Passive flexible temperature measuring equipment has passive power taking and Wireless transceiver characteristic.Sourceless characteristic makes temperature measuring equipment can carry out charged debugging when mounted, and after installing, maintenance cost is low; Radio characteristics has ensured enough electrical separation distances, and reliability is high.
In the present embodiment, flexible passive label 100 is encapsulated in body 200.In other embodiments, body 200 also can through the shell of flexible passive label 100, and now body 200 and flexible passive label 100 split designs, and is convenient to maintenance flexible passive label 100.In this case, flexible passive label 100 is adopted and to be screwed or the various ways such as bonding is fixed on body 200.
Please refer to Fig. 7, the utility model embodiment also discloses a kind of wireless power networking temp measuring system.Wireless power MANET temp measuring system in the present embodiment comprises the passive flexible temperature measuring equipment that a wireless power supplier 400 and are arranged on temperature monitoring point.Wireless power supplier 400 comprises wireless power supplier antenna, temperature probe, networking module, information acquisition module and communication interface.Carried out the transmission of radiofrequency signal by wireless power supplier antenna, radio-frequency antenna between wireless power supplier and temperature measuring equipment.
Wireless power supplier 400 is by wireless power supplier antenna transmission electromagnetic wave, in temperature measuring equipment, electromagnetic wave is converted to electric energy by induction electricity taking coil 24 by flexible passive label 100, and pass through the power supply that energy collection circuit 1 is microprocessor 2, radio frequency transmitter circuitry 3 and sensor circuit 4, electromagnetic effective power supply distance about 20m.Now flexible passive label 100 enters normal operating conditions, microprocessor 2 input end gathers the data of temperature sensors of high precision 5, and the data collected are sent to wireless power supplier 1 by the radio-frequency antenna of radio frequency transmitter circuitry 3, wireless power supplier 1 gets current temperature value by wireless power supplier antenna, thus realizes temperature monitoring.
Usually, the electromagnetic frequency that radio frequency transmitter circuitry 3 is launched is 433MHz, and the electromagnetic frequency that wireless power supplier 400 is launched is 850MHz to 900MHz, and particularly during 900MHz, electromagnetic wave signal penetration capacity is strong, adapts to communicate in switch cubicle complex environment.
Wireless power supplier 400 can also send monitor supervision platform by after the temperature detection signal process received to by communication interface, is convenient to staff and monitors at monitor supervision platform.
Please refer to Fig. 8, the utility model embodiment also discloses another kind of wireless power networking temp measuring system.Wireless power MANET temp measuring system in the present embodiment comprises a wireless power supplier 400 and several flexible passive temperature measuring equipments, and temperature measuring equipment is fixed on different temperature monitoring points.The ID storer 10 of the flexible passive label 100 all built-in storage ID coding of each temperature measuring equipment, ID coding is for distinguishing each flexible passive label 100, make this wireless power supplier 400 can distinguish the temperature detection signal read and be derived from which temperature monitoring point, thus coordinated by a wireless power supplier 400 and multiple temperature measuring equipment, realize the temperature detection of multiple monitoring point.
The utility model embodiment also discloses the third wireless power networking temp measuring system.Wireless power MANET temp measuring system in the present embodiment comprises several wireless power supplier 400 and several flexible passive temperature measuring equipments, and temperature measuring equipment is fixed on different temperature monitoring points, each wireless power supplier 400 several temperature measuring equipments corresponding.
In the present embodiment, wireless power supplier 400 realizes the function of relay forwarding data by information acquisition module, Data Collection on the wireless power supplier 400 in a termination set, then can upload the data to computing machine by communication interface.The flexible passive label 100 of temperature measuring equipment comprises the networking module realizing wireless self-networking function, can communicate between any two flexible passive labels 100.After networking, the ID code of each flexible passive label 100 can freely distribute, and without the need to manually going setting, after distributing, just constitutes communication network.Flexible passive label 100 can also select optimal path, composition intelligent sensing net truly.
During application, because wireless power supplier 400 comprises networking module, also can networking between wireless power supplier 400, thus realize data routing function, greatly strengthen wireless transmission distance.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solutions of the utility model; therefore; every content not departing from technical solutions of the utility model; the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.
Claims (7)
1. a passive temperature measuring equipment, is characterized in that, comprises energy collection circuit, microprocessor, radio frequency transmitter circuitry and sensor circuit;
Energy collection circuit is connected with sensor circuit with microprocessor, radio frequency transmitter circuitry respectively, for foregoing circuit exports power supply, microprocessor connects radio frequency transmitter circuitry and sensor circuit, sensor circuit connects temperature sensor, and radio frequency transmitter circuitry is launched by radio-frequency antenna, received RF signal;
Energy collection circuit comprises passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit and battery, and described energy collection circuit is with passive electromagnetic induction power-supply circuit for primary power, and Vibration induction power-supply circuit is secondary source, and battery is standby power supply.
2. passive temperature measuring equipment as claimed in claim 1, is characterized in that, described passive electromagnetic induction power-supply circuit connects induction electricity taking coil, receives electromagnetic wave, and electromagnetic wave is converted to electric energy.
3. passive temperature measuring equipment as claimed in claim 1, is characterized in that, described energy collection circuit comprises power supply switch circuit, power protecting circuit and power state detection circuit; Passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit are connected the input end of power supply switch circuit with the output terminal of battery; the output terminal of power supply switch circuit connects the input end of power protecting circuit; the output terminal of power protecting circuit connects the power end of microprocessor, sensor circuit and radio frequency transmitter circuitry; passive electromagnetic induction power-supply circuit, Vibration induction power-supply circuit are connected the input end of power state detection circuit with the output terminal of battery, the output terminal of power state detection circuit connects microprocessor.
4. passive temperature measuring equipment as claimed in claim 3, is characterized in that, described power supply switch circuit connects microprocessor, switches power supply under control of the microprocessor.
5. passive temperature measuring equipment as claimed in claim 3, it is characterized in that, described power state detection circuit comprises the first resistance, first diode, second diode and the first field effect transistor, resistance one end connects microprocessor, the power end of sensor circuit and radio frequency transmitter circuitry, the other end connects the first diode anode and the second diode anode respectively, first diode cathode connects the I/O port of microprocessor, second diode cathode connects the source electrode of the first field effect transistor, the grounded drain of the first field effect transistor, grid connected with passive electromagnetic induction power-supply circuit, the output of Vibration induction power-supply circuit and battery.
6. passive temperature measuring equipment as claimed in claim 3; it is characterized in that; described power protecting circuit comprises the low pressure detection chip of band watchdog function; the output terminal of the input end connection power supply switch circuit of low pressure detection chip, output terminal connect the grid of the second field effect transistor; the source electrode of the second field effect transistor is through the second resistance eutral grounding, the grid that drains through connecting the 3rd field effect transistor; the output terminal that drain electrode connects power end, source electrode connects power supply switch circuit of the 3rd field effect transistor, the output of low pressure detection chip also connects the reset pin of microprocessor through the 3rd resistance.
7. passive temperature measuring equipment according to claim 6, is characterized in that, described power protecting circuit comprises storage capacitor, and described storage capacitor connects power end.
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| CN201520769477.6U CN205002895U (en) | 2015-09-30 | 2015-09-30 | Passive temperature measuring device |
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| CN201520769477.6U CN205002895U (en) | 2015-09-30 | 2015-09-30 | Passive temperature measuring device |
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| CN205002895U true CN205002895U (en) | 2016-01-27 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106918408A (en) * | 2017-03-02 | 2017-07-04 | 顺丰科技有限公司 | A kind of passive temperature measuring equipment and its application method |
| CN107546822A (en) * | 2017-09-21 | 2018-01-05 | 南方科技大学 | Robot battery pack charging device and method and computer readable storage medium |
| CN107941375A (en) * | 2017-11-07 | 2018-04-20 | 郑州华力信息技术有限公司 | Temperature of high-tension switch cabinet exception intelligent monitoring method and system |
| CN108168725A (en) * | 2018-01-16 | 2018-06-15 | 山东乾立光电科技有限公司 | A kind of passive and wireless temp measuring method and device |
| CN108181017A (en) * | 2018-01-08 | 2018-06-19 | 北京理工大学 | The embedded electric thermo-couple temperature test system and method for self-powered based on Mechatronic Systems |
| CN108548615A (en) * | 2018-04-17 | 2018-09-18 | 安徽合电正泰电气成套设备有限公司 | Watchband type passive wireless temperature measuring device |
| CN110995323A (en) * | 2019-11-28 | 2020-04-10 | 北京优炫智能科技有限公司 | Passive device |
| CN111010216A (en) * | 2019-11-28 | 2020-04-14 | 北京优炫智能科技有限公司 | Signal management method for passive equipment |
| CN111337139A (en) * | 2020-03-24 | 2020-06-26 | 深圳市云之上科技有限公司 | Temperature measuring device and method for measuring temperature |
| CN111412998A (en) * | 2019-12-30 | 2020-07-14 | 上海贤业电气科技有限公司 | Wireless temperature measurement active and passive integrated temperature sensor circuit |
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2015
- 2015-09-30 CN CN201520769477.6U patent/CN205002895U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918408A (en) * | 2017-03-02 | 2017-07-04 | 顺丰科技有限公司 | A kind of passive temperature measuring equipment and its application method |
| CN107546822A (en) * | 2017-09-21 | 2018-01-05 | 南方科技大学 | Robot battery pack charging device and method and computer readable storage medium |
| CN107941375A (en) * | 2017-11-07 | 2018-04-20 | 郑州华力信息技术有限公司 | Temperature of high-tension switch cabinet exception intelligent monitoring method and system |
| CN108181017A (en) * | 2018-01-08 | 2018-06-19 | 北京理工大学 | The embedded electric thermo-couple temperature test system and method for self-powered based on Mechatronic Systems |
| CN108168725A (en) * | 2018-01-16 | 2018-06-15 | 山东乾立光电科技有限公司 | A kind of passive and wireless temp measuring method and device |
| CN108548615A (en) * | 2018-04-17 | 2018-09-18 | 安徽合电正泰电气成套设备有限公司 | Watchband type passive wireless temperature measuring device |
| CN110995323A (en) * | 2019-11-28 | 2020-04-10 | 北京优炫智能科技有限公司 | Passive device |
| CN111010216A (en) * | 2019-11-28 | 2020-04-14 | 北京优炫智能科技有限公司 | Signal management method for passive equipment |
| CN110995323B (en) * | 2019-11-28 | 2021-05-25 | 北京优炫智能科技有限公司 | Passive device |
| CN111010216B (en) * | 2019-11-28 | 2021-06-11 | 北京优炫智能科技有限公司 | Signal management method for passive equipment |
| CN111412998A (en) * | 2019-12-30 | 2020-07-14 | 上海贤业电气科技有限公司 | Wireless temperature measurement active and passive integrated temperature sensor circuit |
| CN111337139A (en) * | 2020-03-24 | 2020-06-26 | 深圳市云之上科技有限公司 | Temperature measuring device and method for measuring temperature |
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