CN203933169U - A kind of electromagnetic induction power taking radio frequency temperature measuring equipment - Google Patents

A kind of electromagnetic induction power taking radio frequency temperature measuring equipment Download PDF

Info

Publication number
CN203933169U
CN203933169U CN201420330701.7U CN201420330701U CN203933169U CN 203933169 U CN203933169 U CN 203933169U CN 201420330701 U CN201420330701 U CN 201420330701U CN 203933169 U CN203933169 U CN 203933169U
Authority
CN
China
Prior art keywords
power
circuit
radio frequency
temperature measuring
diode
Prior art date
Application number
CN201420330701.7U
Other languages
Chinese (zh)
Inventor
杨石林
Original Assignee
杭州凯源电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 杭州凯源电子有限公司 filed Critical 杭州凯源电子有限公司
Priority to CN201420330701.7U priority Critical patent/CN203933169U/en
Application granted granted Critical
Publication of CN203933169U publication Critical patent/CN203933169U/en

Links

Abstract

The electromagnetic induction power taking radio frequency temperature measuring equipment that the utility model provides, comprise Power Management Unit, described Power Management Unit input connects induction coil, described Power Management Unit output connects radio frequency temperature measuring unit, described Power Management Unit comprises the power-supply circuit that boosts, energy storage circuit and low-voltage detection circuit, described boosting connects induction coil after pressure limiting circuit in parallel between power-supply circuit input, the described power-supply circuit output that boosts connects energy storage circuit, and the current-limiting circuit of connecting between boost power-supply circuit and energy storage circuit, described energy storage circuit output connects cell input terminal, described battery output connects low-voltage detection circuit.

Description

A kind of electromagnetic induction power taking radio frequency temperature measuring equipment
Technical field
The utility model relates to a kind of radio frequency temperature measuring equipment, a kind of radio frequency temperature measuring equipment that carries out electromagnetic induction power taking by induction coil particularly, and this radio frequency temperature measuring equipment is applied to the temperature monitoring of high voltage isolation switch contact.
Background technology
18 the great anti-accident measures > of electrical network > revised editions of < < State Grid Corporation of China, in raw (2012) No. 352 files of national grid, explicitly point out: strengthen carrying out switch cabinet temperature and detect, switch cubicle intensively monitoring, analysis and processing to temperature anomaly, prevent the cabinet internal short-circuit fault that overheat of conducting circuit causes.The overheated regular connector portions with temperature measuring equipment monitoring switch equipment of prevention switchgear current loop, the current-carrying part (keypoint part: contact, wire outlet seat etc.) of isolating switch particularly in heavy load or between the megathermal period, the setting of reinforcement to operational outfit temperature rise, pinpoints the problems and should take measures in time.
The temperature measuring equipment using under hyperbaric environment, conventional supply power mode has powered battery, CT power taking, noncontact induction power taking, hybrid power supply etc. in the market, has shortcoming separately in these supply power modes.While adopting powered battery, due to operational environment more complicated, running down of battery is changed inconvenient.In the time of CT power taking, CT volume ratio is larger, install relatively inconvenient, because the switch cabinet contact arm of each producer is in different size, therefore CT will make a lot of model coils varying in size, therefore CT starting current will be up to more than 50A,, invent a kind of easy for installation, cost of manufacture is cheap, the efficient way to take power that starting current is little is very necessary.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of electromagnetic induction power taking radio frequency temperature measuring equipment, and easy for installation, cost of manufacture is cheap, and starting current is little.
For solving the problems of the technologies described above, the electromagnetic induction power taking radio frequency temperature measuring equipment that the utility model provides, comprise Power Management Unit, described Power Management Unit input connects induction coil, described Power Management Unit output connects radio frequency temperature measuring unit, described Power Management Unit comprises the power-supply circuit that boosts, energy storage circuit and low-voltage detection circuit, described boosting connects induction coil after pressure limiting circuit in parallel between power-supply circuit input, the described power-supply circuit output that boosts connects energy storage circuit, and the current-limiting circuit of connecting between boost power-supply circuit and energy storage circuit, described energy storage circuit output connects cell input terminal, described battery output connects low-voltage detection circuit.From power taking within the scope of distance high-voltage bus 0~50mm, easy for installation by induction coil.
Wherein, described low-voltage detection circuit comprises low-voltage detection chip and switch element, the input of described low-voltage detection chip connects respectively switch element described in the output of battery and is connected between battery and radio frequency temperature measuring unit, described low-voltage detection chip output connecting valve element control end.If the output end voltage of Power Management Unit (being battery both end voltage) is lower than 2.2V, switch element disconnects, battery stops discharging to radio frequency temperature measuring unit, energy storage circuit continues to charge the battery, until more than battery output end voltage reaches 3.3v, switch element is closed, and battery is the power supply of radio frequency temperature measuring unit again.
Wherein, described switch element is metal-oxide-semiconductor, and full-controlled switch is convenient to break-make and is controlled.
Wherein, described induction coil 30 is comprised of magnetic core, bobbin and coil, and described magnetic core is " work " shape, and described magnetic core is placed in bobbin, and described coil winding is in the bobbin middle part over against magnetic core middle part, the even action of magnetic core to coil.
Wherein, the described power-supply circuit 13 that boosts is by diode D1, D2, D3, D4 and storage capacitor C1, C2, C3, C4 forms, described diode D1, D2, D3, D4 is connected in reverse parallel in induction coil 30 two ends successively, described storage capacitor C1 is connected between diode D1 negative electrode and induction coil 30, described storage capacitor C2 is connected between diode D1 anode and diode D2 negative electrode, described storage capacitor C3 is connected between diode D2 anode and diode D3 negative electrode, described storage capacitor C4 is connected between diode D3 anode and diode D4 negative electrode, described diode D4 two ends are output, the induction alternating voltage that induction coil produces is multiplication of voltage output after the power-supply circuit that boosts boosts, the power-supply circuit that boosts is simple in structure, volume is little, the components and parts that use are to only have diode and electric capacity, with low cost.
Wherein, the conduction voltage drop of described diode D1, D2, D3, D4 is 0.3v, and the capacity of described storage capacitor C1, C2, C3, C4 is 10uF, is common component, and buying is convenient, low price.
Wherein, described radio frequency temperature measuring unit 20 is provided with metallic shield, has strengthened anti-electric field interference performance.
The utility model compared with the existing technology has the following advantages and effect: from power taking within the scope of distance high-voltage bus 0~50mm, easy for installation by induction coil; The power-supply circuit that boosts in Power Management Unit is simple in structure, and volume is little, and the components and parts of use are to only have diode and electric capacity, with low cost; Energy storage circuit in Power Management Unit is charged to battery, thereby without often changing battery, easy to use.By the power-supply circuit that boosts, carry out multiplication of voltage output, reduced starting current.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of electromagnetic induction power taking of the utility model radio frequency temperature measuring equipment.
Fig. 2 is the circuit diagram of power-supply circuit of boosting in Fig. 1.
Fig. 3 is the structural representation of radio frequency temperature measuring unit in Fig. 1.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, following examples are to explanation of the present utility model and the utility model is not limited to following examples.
As shown in Figure 1, the electromagnetic induction power taking radio frequency temperature measuring equipment that the utility model provides, comprise Power Management Unit 10, radio frequency temperature measuring unit 20 and induction coil 30, Power Management Unit 10 inputs connect the induction coil 30 from high voltage bus power taking, the induced voltage at induction coil 30 two ends is after Power Management Unit 10 conversion process, by Power Management Unit 10 outputs, connecting radio frequency temperature measuring unit 20, is 20 power supplies of radio frequency temperature measuring unit.By induction coil, from power taking within the scope of distance high-voltage bus 0~50mm, fitting operation is convenient.
Power Management Unit 10 comprises the power-supply circuit 13 that boosts, energy storage circuit 15 and low-voltage detection circuit 17, power-supply circuit 13 inputs that boost connect induction coil 30 outputs, and the induced voltage of induction coil 30 outputs is exported with twice induced voltage after the power-supply circuit 13 that boosts boosts.The power-supply circuit 13 that boosts uses multiplication of voltage principle, thereby can be little with operating current, but the higher mode of operating voltage be load supplying, has reduced starting current, to electromagnetic induction power taking radio frequency temperature measuring equipment of the present utility model, in the situation that general starting current is 10A, just can work.
For preventing overtension, the pressure limiting circuit 12 in parallel between power-supply circuit 13 inputs that boosts, the boost amplitude of input voltage (being induced voltage) of power-supply circuit 13 of 12 pairs of pressure limiting circuits limits, and whole device is played a protective role.Power-supply circuit 13 outputs that boost connect energy storage circuit 15 inputs; and the current-limiting circuit 14 of connecting between boost power-supply circuit 13 and energy storage circuit 15; by series connection current-limiting circuit 14, limit the current amplitude that the power-supply circuit 13 that boosts is exported to energy storage circuit 15, play current-limiting protection effect.Energy storage circuit 15 outputs connect battery 16 inputs (charging end), for battery 16 charges.Battery 16 outputs (discharge end) connect radio frequency temperature measuring unit 20, are 20 power supplies of radio frequency temperature measuring unit.
Battery 16 outputs also connect the low-voltage detection circuit 17 that detects output voltage.Two inputs of the low-voltage detection chip 171 in low-voltage detection circuit 17 connect battery 16 outputs, switch element S is connected on switch element S and is connected between battery 16 and radio frequency temperature measuring unit 20, low-voltage detection chip 171 output connecting valve element S control ends, low-voltage detection chip 171 detects battery 16 output end voltages, if battery 16 output both end voltage (being the output end voltage of Power Management Unit 10) are lower than 2.2V, switch element S disconnects and stopping to 10 electric discharges of radio frequency temperature measuring unit, energy storage circuit 15 continues to battery 16 chargings, until more than battery 16 output end voltages reach 3.3v, switch element S is closed, battery S is 10 power supplies of radio frequency temperature measuring unit again.Add low-voltage detection circuit 17 to improve for electrical stability, prevent that because power-supply circuit 13 energy that boost are too low be to cause whole temperature measuring equipment unstable.
As shown in Figure 2, boost power-supply circuit 13 by diode D1, D2, D3, D4 and storage capacitor C1, C2, C3, C4 forms, described diode D1, D2, D3, D4 is connected in reverse parallel in induction coil 30 two ends successively, described storage capacitor C1 is connected between diode D1 negative electrode and induction coil 30, described storage capacitor C2 is connected between diode D1 anode and diode D2 negative electrode, described storage capacitor C3 is connected between diode D2 anode and diode D3 negative electrode, described storage capacitor C4 is connected between diode D3 anode and diode D4 negative electrode, described diode D4 two ends are output.The power-supply circuit 13 that boosts is only comprised of diode and electric capacity, and simple in structure, volume is little, with low cost.Conventionally the conduction voltage drop of diode D1, D2, D3, D4 is 0.3v, and the capacity of storage capacitor C1, C2, C3, C4 is 10uF, is common component, and buying is convenient, low price.
As shown in Figure 3, radio circuit 21, signal processing circuit 22 and temperature sensor circuit 23 that the output of Power Management Unit 10 is respectively in radio frequency temperature measuring unit 20 provide power supply, temperature sensor circuit 23 receives the detection signal of temperature sensor 24, signal processing circuit 22 inputs connect temperature sensor circuit 23, output connects radio circuit 21, through radio circuit 21, outwards transmit, realize radio frequency thermometric.Conventionally radio frequency temperature measuring unit 20 is provided with metallic shield, or only at radio circuit 21 and signal processing circuit 22, metallic shield is set, and has strengthened anti-electric field interference performance.
During practical application, switch element S often elects metal-oxide-semiconductor as, and buying is convenient, and full-controlled switch, is convenient to control break-make; Induction coil 30 is generally comprised of magnetic core, bobbin and coil, and magnetic core is " work " shape, and magnetic core is placed in bobbin, and coil winding is in the bobbin middle part over against magnetic core middle part, the even action of magnetic core to coil.
In addition, it should be noted that, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different.All equivalence or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection range of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection range of the present utility model.

Claims (7)

1. an electromagnetic induction power taking radio frequency temperature measuring equipment, comprise Power Management Unit (10), described Power Management Unit (10) input connects induction coil (30), described Power Management Unit (10) output connects radio frequency temperature measuring unit (20), it is characterized in that, described Power Management Unit (10) comprises the power-supply circuit that boosts (13), energy storage circuit (15) and low-voltage detection circuit (17), between the described power-supply circuit that boosts (13) input, after pressure limiting circuit in parallel (12), connect induction coil (30), the described power-supply circuit that boosts (13) output connects energy storage circuit (15), and the current-limiting circuit (14) of connecting between the power-supply circuit that boosts (13) and energy storage circuit (15), described energy storage circuit (15) output connects battery (16) input, described battery (16) output connects low-voltage detection circuit (17).
2. electromagnetic induction power taking radio frequency temperature measuring equipment according to claim 1, it is characterized in that, described low-voltage detection circuit (17) comprises low-voltage detection chip (171) and switch element (S), the input of described low-voltage detection chip (171) connects respectively the output of battery (16), described switch element (S) is connected between battery (16) and radio frequency temperature measuring unit (20), described low-voltage detection chip (171) output connecting valve element (S) control end.
3. electromagnetic induction power taking radio frequency temperature measuring equipment according to claim 2, is characterized in that, described switch element (S) is metal-oxide-semiconductor.
4. electromagnetic induction power taking radio frequency temperature measuring equipment according to claim 1, it is characterized in that, described induction coil (30) is comprised of magnetic core, bobbin and coil, described magnetic core is " work " shape, and described magnetic core is placed in bobbin, described coil winding is at the bobbin middle part over against magnetic core middle part.
5. electromagnetic induction power taking radio frequency temperature measuring equipment according to claim 1, it is characterized in that, the described power-supply circuit that boosts (13) is by diode (D1, D2, D3, D4) and storage capacitor (C1, C2, C3, C4) form, described diode (D1, D2, D3, D4) be connected in reverse parallel in successively induction coil (30) two ends, described storage capacitor (C1) is connected between diode (D1) negative electrode and induction coil (30), described storage capacitor (C2) is connected between diode (D1) anode and diode (D2) negative electrode, described storage capacitor (C3) is connected between diode (D2) anode and diode (D3) negative electrode, described storage capacitor (C4) is connected between diode (D3) anode and diode (D4) negative electrode, described diode (D4) two ends are output.
6. electromagnetic induction power taking radio frequency temperature measuring equipment according to claim 5, is characterized in that, the conduction voltage drop of described diode (D1, D2, D3, D4) is 0.3v, and the capacity of described storage capacitor (C1, C2, C3, C4) is 10uF.
7. electromagnetic induction power taking radio frequency temperature measuring equipment according to claim 1, is characterized in that, described radio frequency temperature measuring unit (20) is provided with metallic shield.
CN201420330701.7U 2014-06-20 2014-06-20 A kind of electromagnetic induction power taking radio frequency temperature measuring equipment CN203933169U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420330701.7U CN203933169U (en) 2014-06-20 2014-06-20 A kind of electromagnetic induction power taking radio frequency temperature measuring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420330701.7U CN203933169U (en) 2014-06-20 2014-06-20 A kind of electromagnetic induction power taking radio frequency temperature measuring equipment

Publications (1)

Publication Number Publication Date
CN203933169U true CN203933169U (en) 2014-11-05

Family

ID=51828924

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420330701.7U CN203933169U (en) 2014-06-20 2014-06-20 A kind of electromagnetic induction power taking radio frequency temperature measuring equipment

Country Status (1)

Country Link
CN (1) CN203933169U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104065189A (en) * 2014-06-06 2014-09-24 杭州微光电子股份有限公司 Tile-shaped magnetic steel magnetism division fixing frame used for permanent magnet motor
CN104392590A (en) * 2014-11-07 2015-03-04 国网上海市电力公司 Wireless power internet-of-things sensor without need of connecting with power supply
CN104901393A (en) * 2015-06-22 2015-09-09 罗民雄 Method and circuit for controlling charging voltage of batteries in battery series connection charging circuit
CN105136328A (en) * 2015-09-30 2015-12-09 杭州凯源电子有限公司 Flexible temperature measurement apparatus
CN105303205A (en) * 2015-09-30 2016-02-03 杭州凯源电子有限公司 Passive flexible label, passive flexible temperature measurement device and wireless power networking temperature measurement system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104065189A (en) * 2014-06-06 2014-09-24 杭州微光电子股份有限公司 Tile-shaped magnetic steel magnetism division fixing frame used for permanent magnet motor
CN104065189B (en) * 2014-06-06 2016-07-06 杭州微光电子股份有限公司 A kind of tile-shaped magnet steel for magneto divides magnetically fixed frame
CN104392590A (en) * 2014-11-07 2015-03-04 国网上海市电力公司 Wireless power internet-of-things sensor without need of connecting with power supply
CN104901393A (en) * 2015-06-22 2015-09-09 罗民雄 Method and circuit for controlling charging voltage of batteries in battery series connection charging circuit
CN105136328A (en) * 2015-09-30 2015-12-09 杭州凯源电子有限公司 Flexible temperature measurement apparatus
CN105303205A (en) * 2015-09-30 2016-02-03 杭州凯源电子有限公司 Passive flexible label, passive flexible temperature measurement device and wireless power networking temperature measurement system
CN105303205B (en) * 2015-09-30 2016-08-17 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
CN105136328B (en) * 2015-09-30 2019-03-01 杭州凯源电子有限公司 A kind of flexibility temperature measuring equipment

Similar Documents

Publication Publication Date Title
CN201185355Y (en) High voltage line induction electricity-taking apparatus
TWI514734B (en) Adapter, controlling method of adapter and notebook
CN103023369B (en) Capacitance discharge circuit and power converter
CN202206196U (en) High-voltage induction electricity-taking device
CN101873073A (en) AC to DC converter
CN100544158C (en) The uninterruptible power system of low-power consumption
CN103647318B (en) Communicating terminal, charge control method, device and circuit
CN204103532U (en) A kind of two-way charger
CN101316047B (en) Emergency power supply with charger
CN204794705U (en) Multiplexed output flyback converter of uninterrupted power supply
CN102368637A (en) Power acquisition device of high-voltage power transmission line
EP2502330A2 (en) Systems and methods for delivering power in response to a connection event
CN201975754U (en) Electric leakage overcurrent protection circuit
CN103683455A (en) Supercapacitor based inductive energy-extracting power supply device of high-voltage measurement system
CN202513610U (en) Charging device
CN208386212U (en) A kind of uninterruptible power supply
CN203288400U (en) Transformer used for flyback switch power supply
CN201629677U (en) Pre-charging circuit for high-voltage frequency converter using high-voltage technology
CN204068405U (en) The earth leakage protective DC power-supply system of a kind of band
CN104578346A (en) Safe double-oblong-core electric energy coupling middle end
CN202142994U (en) Power supply device
CN105119388B (en) The Current Mutual Inductance draw-out power supply of wide-range current work
CN101667747A (en) Conversion module for extracting working power from high-voltage power
CN103580272A (en) Time-delay circuit for outage of power source
CN203278327U (en) Backup power supply charging and discharging control circuit

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant