CN104485757A - Wireless sensing device adopting magnetic-resonance wireless power supply - Google Patents
Wireless sensing device adopting magnetic-resonance wireless power supply Download PDFInfo
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- CN104485757A CN104485757A CN201410798860.4A CN201410798860A CN104485757A CN 104485757 A CN104485757 A CN 104485757A CN 201410798860 A CN201410798860 A CN 201410798860A CN 104485757 A CN104485757 A CN 104485757A
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Abstract
The invention provides a wireless sensing device adopting magnetic-resonance wireless power supply, which is suitable for regular inspection and occasions where battery use is limited. The sensing device is composed of a magnetic-resonance wireless power supply appliance and a plurality of wireless sensors, wherein the magnetic-resonance wireless power supply appliance supplies power for the wireless sensors, and each wireless sensor obtains a power supply from the power supply appliance in a magnetic-resonance way. After the power supply appliance detects the electricity shortage of the wireless sensors or receives an instruction of an external concentrator, the power supply appliance starts up wireless power supply. The magnetic-resonance wireless power supply appliance can also be used as a portable inspection instrument.
Description
Technical field
The present invention relates to wireless senser field, particularly relate to the wireless senser of special power supply formula.
Background technology
Wireless senser has in the condition monitoring in the fields such as industry, medical treatment and traffic to be applied more and more widely.Major part wireless senser is all battery-powered, thus limits its application in some cases.Powered battery has the shortcoming of several aspect, and one is capacitance and the restricted lifetime of battery, and two is that battery can take suitable volume and weight, and three is that battery itself can bring potential safety hazard, to blast burning etc. as leakage burn into is subject to high temperature or collision.Because these shortcomings, under some application scenario, battery is restricted.Such as in power equipment thermometric, long-term charging operation wanted by power equipment, and the battery electric quantity because of wireless senser is used up and the replacing that has a power failure is unallowed.For the capsule transducer of medical treatment, require small in volume, also wish not charged pool.Tire pressure sensor with battery needs to regularly replace battery, also result in inconvenience.
Do not need the wireless senser of battery at present, mainly contain surface acoustic wave sensor, Current Mutual Inductance (CT) power taking transducer and solar powered transducer.These wireless sensers are mainly used in power equipment thermometric, and weakness also clearly.For surface acoustic wave sensor, one is its wireless transmission distance very short (generally within two meters); Two is signal poor anti jamming capability; Three is that signal monitoring analysis is very complicated; Four is have the weakness that cannot overcome in the identification of transducer multiaddress.Several wireless senser of battery that do not need requires very high to external condition of work in addition, and wherein Current Mutual Inductance power taking sensor requirements measured target has electric current and restricted to size of current; Solar energy power taking transducer then requires solar radiation.And the volume and weight of latter two transducer is also larger.
Occurred two kinds of wireless charging technology for mobile phone and electric automobile in recent years, one is electromagnetic induction wireless charging, and another kind is magnetic resonance wireless charging.Although wherein magnetic resonance wireless charging technology maturity is inadequate, owing to there is wireless charging distance, receive publicity to the advantage of multiple target charging simultaneously.The application of following wireless charging technology will be more and more extensive.
Summary of the invention
The present invention proposes a kind of wireless sensing device and the method for work thereof that adopt magnetic resonance wireless power, this device is applicable to regular visit or battery uses the occasion be restricted.
According to wireless sensing device of the present invention, it is characterized in that sensing device forms by magnetic resonance wireless power supplier with by multiple wireless sensers of its power supply; Described magnetic resonance wireless power supplier produces circuit by power supply, high frequency magnetic field and start-up circuit forms; Described wireless senser is made up of magnetic resonance circuit, rectification circuit, voltage stabilizing circuit, accumulator, power sense circuit, signal processing circuit, senser element, wireless signal transmission circuit and antenna; Described magnetic resonance wireless power supplier provides working power to wireless senser, and supply power mode is magnetic resonance wireless power.
Described wireless senser sends the wireless sensing signal containing Detection Information, and according to the difference of Detection Information, the senser element of its inside can be temperature sensor, pressure sensor, chemical composition sensor and image acquisition device etc.Except Detection Information, wireless sensing signal also comprises the information such as supply voltage instruction and the identity code of self.
In order to reduce the power consumption of device, just described charger only starts when needs are powered.The start-up circuit of charger comprises antenna, wireless signal transmission circuit and signal processing circuit.It can receive the signal of wireless senser, when detecting that the power voltage insufficient of wireless senser just starts wireless power.Or receive the signal that outside collector sends, just start wireless power when receiving the power supply instruction that outside collector sends.
If the power supply of above-mentioned magnetic resonance wireless power supplier is battery, and the signal processing circuit in power supply start-up circuit can gather, shows and store sensing data, thus makes wireless power supplier become a portable logging.When patrolling and examining certain region, alignment sensor opens logging, just can realize also gathering back heat transfer agent to the wireless power of transducer.
Hereafter by the present invention is further illustrated with embodiment by reference to the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the specific embodiment structural representation of apparatus of the present invention.
Reference numeral: 1, magnetic resonance wireless power supplier; 2, wireless senser; 3, magnetic resonance circuit; 4, rectification circuit; 5 voltage stabilizing circuits; 6, accumulator; 7, signal processing circuit; 8, senser element; 9, wireless signal transmission circuit; 10, antenna; 11, high frequency magnetic field produces circuit; 12, power supply; 13, start-up circuit.
Embodiment
Fig. 1 is the specific embodiment structural representation of apparatus of the present invention.Only depict the situation of magnetic resonance wireless power supplier (1) band wireless senser (2) in figure, in fact the quantity of wireless senser can be a lot.The high frequency magnetic field frequency that magnetic resonance wireless power supplier (1) produces is 10MHz, and the transducing signal frequency of wireless senser is 433MHz.Magnetic resonance circuit (3) is also tuned to 10MHz, can effectively receive the energy of high frequency magnetic field and produce high-frequency voltage signal, high-frequency voltage signal forms the working power of wireless senser after rectification circuit (4), voltage stabilizing circuit (5) and accumulator (6).When supply voltage reaches normally, signal processing circuit (7) is started working, the signal of senser element (8) is processed, when after the request signal receiving outside collector, just information is sent by wireless transceiver circuit (9) and antenna (10).The wireless sensing signal sent comprises heat transfer agent, supply voltage instruction and the identity code of self.
Magnetic resonance wireless power supplier (1) comprises high frequency magnetic field and produces circuit (11), power supply (12) and start-up circuit (13).In this specific embodiment, start-up circuit (13) includes antenna, wireless signal transmission circuit and signal processing circuit, the signal that wireless senser sends can be received, when judging the undertension of wireless senser, just starting high frequency magnetic field generation circuit (11) and powering to wireless senser.
Although in conjunction with above-mentioned example embodiment to invention has been explanation, obviously: those skilled in the art still can the parts used to it make replacement, amendment and distortion.Therefore exemplary enforcement of the present invention and distortion thereof and amendment still fall in the protection range that is defined by the appended claims.
Claims (4)
1. adopt the wireless sensing device of magnetic resonance wireless power, it is characterized in that sensing device forms by magnetic resonance wireless power supplier with by multiple wireless sensers of its power supply; Described magnetic resonance wireless power supplier produces circuit by power supply, high frequency magnetic field and start-up circuit forms; Described wireless senser is made up of magnetic resonance circuit, rectification circuit, voltage stabilizing circuit, accumulator, power sense circuit, signal processing circuit, senser element, wireless signal transmission circuit and antenna; Described magnetic resonance wireless power supplier provides working power to wireless senser, and supply power mode is magnetic resonance wireless power.
2. wireless sensing device according to claim 1, it is characterized in that the start-up circuit of described wireless power supplier comprises antenna, wireless transceiver circuit and signal processing circuit, the signal of wireless senser can be received, when detecting that the power voltage insufficient of wireless senser just starts wireless power.
3. wireless sensing device according to claim 1, it is characterized in that the start-up circuit of described wireless power supplier comprises antenna, wireless transceiver circuit and signal processing circuit, can receive the signal that outside collector sends, the power supply instruction sent when the outside collector of reception just starts wireless power.
4. wireless power supplier according to claim 2, is characterized in that power supply is battery, and the signal processing circuit in power supply start-up circuit can gather, shows and store sensing data, thus makes wireless power supplier become a portable logging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798860.4A CN104485757A (en) | 2014-12-22 | 2014-12-22 | Wireless sensing device adopting magnetic-resonance wireless power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798860.4A CN104485757A (en) | 2014-12-22 | 2014-12-22 | Wireless sensing device adopting magnetic-resonance wireless power supply |
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| Publication Number | Publication Date |
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| CN104485757A true CN104485757A (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410798860.4A Pending CN104485757A (en) | 2014-12-22 | 2014-12-22 | Wireless sensing device adopting magnetic-resonance wireless power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295736A (en) * | 2015-09-30 | 2017-01-04 | 杭州凯源电子有限公司 | A kind of flexible passive label, passive flexible temperature measuring equipment and wireless power networking temp measuring system |
| CN107167252A (en) * | 2017-05-22 | 2017-09-15 | 电子科技大学 | System for detecting temperature |
| CN112910107A (en) * | 2019-12-04 | 2021-06-04 | 太阳Hst株式会社 | Industrial wireless charging system using magnetic resonance mode |
-
2014
- 2014-12-22 CN CN201410798860.4A patent/CN104485757A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106295736A (en) * | 2015-09-30 | 2017-01-04 | 杭州凯源电子有限公司 | A kind of flexible passive label, passive flexible temperature measuring equipment and wireless power networking temp measuring system |
| CN106295736B (en) * | 2015-09-30 | 2018-12-04 | 杭州凯源电子有限公司 | A kind of flexible passive label, passive flexible temperature measuring equipment and wireless power networking temp measuring system |
| CN107167252A (en) * | 2017-05-22 | 2017-09-15 | 电子科技大学 | System for detecting temperature |
| CN112910107A (en) * | 2019-12-04 | 2021-06-04 | 太阳Hst株式会社 | Industrial wireless charging system using magnetic resonance mode |
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Application publication date: 20150401 |
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