CN103219927A - Passive power supply for electrical device detection - Google Patents

Passive power supply for electrical device detection Download PDF

Info

Publication number
CN103219927A
CN103219927A CN2013100928947A CN201310092894A CN103219927A CN 103219927 A CN103219927 A CN 103219927A CN 2013100928947 A CN2013100928947 A CN 2013100928947A CN 201310092894 A CN201310092894 A CN 201310092894A CN 103219927 A CN103219927 A CN 103219927A
Authority
CN
China
Prior art keywords
module
pin
power supply
chip
described
Prior art date
Application number
CN2013100928947A
Other languages
Chinese (zh)
Other versions
CN103219927B (en
Inventor
喻红涛
张志丰
邱清泉
张国民
戴少涛
Original Assignee
中国科学院电工研究所
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 中国科学院电工研究所 filed Critical 中国科学院电工研究所
Priority to CN201310092894.7A priority Critical patent/CN103219927B/en
Publication of CN103219927A publication Critical patent/CN103219927A/en
Application granted granted Critical
Publication of CN103219927B publication Critical patent/CN103219927B/en

Links

Abstract

Disclosed is a passive power supply for electrical device detection. The passive power supply comprises a temperature differential power generation device, a power supply management module, a wireless sensor module and electromagnetic screens. A hot face of the temperature differential power generation device is directly attached to a portion of an electrical device, wherein the portion of the electrical device generates waste heat; and the waste heat released in operation of the electrical device is used for power generation. Electric energy generated by the temperature differential power generation device is transmitted to the power supply management module, and stable voltage and current are output for supplying power to the wireless sensor module after regulation by the power supply management module. The periphery of the power supply management module and the periphery of the wireless sensor module are wrapped by the electromagnetic screens. The power supply management module is composed of an energy storage module, a boosting module, a voltage reducing module and a constant flow source module. Output of the temperature differential power generation device is transmitted to the boosting module through the energy storage module and then supplies power to the voltage reducing module and the constant flow source module respectively. The voltage reducing module is in parallel connection with the constant flow source module. Both an input end of the voltage reducing module and an input end of the constant flow source module are connected to an output end of the boosting module.

Description

A kind of passive power supply that is used for the electric equipment detection

Technical field

The present invention relates to a kind of passive power supply that electric equipment detects that is used for.

Background technology

Electric equipment is carried out online detection, have and can detect defective in good time, the prevention apparatus accident takes place, and improves the security reliability of operation; Can strengthen the specific aim of maintenance, improve the quality and the efficient of maintenance, save lot of manpower and material resources; The inner latency defective that exists of discovering device, and the advantages such as development of grasp defective early.

The electric equipment detected object has multiple, wherein transformer ' s type be since transformer oil heat and the electricity effect under, decomposite hydrogen, carbon monoxide, carbon dioxide and multiple low molecular hydrocarbons class gas, the type of device interior fault and the order of severity are relevant with aerogenesis speed with the composition of these gases, so be necessary the composition and the content of these gases are detected, can adopt corresponding gas sensor to measure; Equipment range estimation difficulty day by day in the enclosed switchgear, the heating condition monitoring problem of device interior becomes increasingly conspicuous, so be necessary to adopt its temperature inside of monitoring in real time such as temperature sensor; The primary cut-out class need be monitored electric current, the voltage waveform of operating coil, so that effectively judge faults such as tripping, malfunction, monitoring its external vibration signal comes the state of high-voltage switch gear mechanical system is diagnosed, the Leakage Current of measuring the circuit breaker lifting arm is to detect its state of insulation, measure static loop resistance and dynamic loop resistance with detection contact scaling loss situation, utilize the overheated appearance thermal change situation that causes of infrared temperature measurement apparatus contact, monitoring SF6 gas pressure.

Because above-mentioned electric equipment usually has high voltage, if adopt the online detection of direct contact type mode, power supplys such as its general employing storage battery are powered, because storage battery needs often charging, and just need behind the operation certain hour to change, and have bigger voltage difference usually and between the high voltage electric equipment, this voltage difference can cause consequences such as electric equipment damage.Semiconductor temperature differential generating is a kind of novel generation mode, and it is little to have a volume, noiselessness and discharge of poisonous waste, and the life-span is long, reliability height, stable performance, series of advantages such as safety non-pollution.It is to utilize semi-conductive peculiar property, heat directly is transformed into a kind of generator of electricity.Therefore, if can utilize the thermo-electric generation principle, the used heat that produces during with electric equipment operation is as thermal source, produce electric energy and give the power supply of electric equipment checkout gear, with the purpose that realizes that passive power supply detects, then can avoid problem between storage battery and the high voltage electric equipment, the problem includes: excessive problem of voltage difference so that electric equipment damage, a large amount of savings detects cost and saves conventional energy resource, and has advantage such as long service life.

Thermoelectric effect is the general name of the electrical effect that causes of the thermal effect that caused by electric current and the temperature difference, and it comprises Seebeck (Seebeck) effect, Pa Er card (Peltier) effect and Thomson (Thomson) effect.Semiconductor temperature differential generating mainly is to utilize Seebeck effect, and Seebeck coefficient is also referred to as thermoelectric power usually, and its microphysics essence can be illustrated by charge carrier changes in distribution in the temperature gradient effect lower conductor.Do not set up the isolated conductor of the temperature difference as yet for two ends, its charge carrier is evenly to distribute in conductor.In case after temperature gradient was set up in conductor, the charge carrier that is in the hot junction just had bigger kinetic energy, be tending towards piling up to the cold junction diffusion and at cold junction, make cold junction charge carrier number more than the hot junction.This electric charge will make the electric neutrality in the conductor be destroyed in the accumulation of cold junction.On the other hand, the accumulation of electric charge causes setting up a built-in field in conductor, to stop the further diffusion of hot junction charge carrier to cold junction.When conductor reached balance, the orientation of no net charge moved in the conductor like this, and the electrical potential difference that form at the conductor two ends this moment is exactly the Seebeck electromotive force.

Mainly contain Bi at present 2Te 3/ Sb 2Te 3(being applicable to the low-temperature space that 400K is following) mainly is applied to refrigeration aspect and low temperature thermo-electric generation field; Because the temperature during electric equipment operation usually is lower than 400K, Bi in this warm area scope 2Te 3/ Sb 2Te 3Have bigger figure of merit, the electricity generation material that relatively is suitable as this warm area is used.

ZigBee is the wireless communication technology between radio mark and bluetooth, is mainly used between short distance, low in energy consumption and the various electronic equipments that transmission rate is not high to carry out transfer of data.Its work characteristics be have periodic data is typically arranged, the time ratio of intermittent data transmission and reaction is lower.The requirement of wireless sensor network development has just in time been catered in its appearance, based on the wireless sensor network of ZigBee technology possess power saving, reliable, cost is low, capacity is big, many advantages such as safe, and be that world development is the fastest, have one of ten big state-of-the-art technologies of wide market prospects.Its appearance will be the once change of radio sensing network development.

Chinese patent 200910092869.2 proposes the spuious energy of a kind of electric equipment power supply.Its principle is that the mechanical vibrational energy, heat energy or the leakage field that discharge during with electric equipment operation can be converted to electric energy output, and Chinese patent 200610114707.0 has designed photovoltaic effect and thermoelectric effect to be mixed to make and be used for Blast Furnace Top Gas Recovery Turbine Unit (TRT).They do not carry out the design of electromagnetic screen to the abominable electromagnetic environment that may occur in the electric equipment operation, and do not change access load size along with the variation of the temperature difference, can not guarantee that power supply works long hours by the working method of discontinuous.

Summary of the invention

The objective of the invention is to overcome the defective that existing electric equipment can not adopt the online detection of the direct way of contact, and propose a kind of passive power supply that electric equipment detects that is used for based on the angle of rationally utilizing the used heat equal energy source.The used heat that the present invention discharges in the time of can rationally utilizing electric equipment operation is used as the energy, have cleaning, long, stable and reliable operation feature of pollution-free and life-span, directly utilize its waste-heat power generation, come to checkout gear power supply, and adopt Wireless transmission mode that detected sensor parameters is transferred on the terminal to show in real time.The present invention has also designed the electromagnetic screen electromagnetic interference of dealing with in the electric equipment operation, and can insert corresponding size loads according to the variation of the temperature difference electricity generation device two ends temperature difference, and the assurance power supply still can be worked in wideer temperature range reliably.

The passive power supply that the present invention is used for the electric equipment detection comprises temperature difference electricity generation device, power management module, wireless sensor module and electromagnetic screen.The hot side of temperature difference electricity generation device directly is attached to the position that electric equipment produces used heat, the waste-heat power generation that discharges when utilizing electric equipment operation, electricity can be transferred to power management module, power management module is adjusted it back stable voltage and current of output again and is powered to wireless sensor module, and power management module and wireless sensor module periphery are surrounded by electromagnetic screen.Wireless sensor module changes the size that inserts load according to the size of described temperature difference electricity generation device output voltage, also can manually change the size of load by terminal control.

Described temperature difference electricity generation device is by thermo-electric generation sheet, compositions such as copper radiating rib and copper sheet.In order to obtain higher output voltage, described thermo-electric generation sheet is formed by many PN junction is connected in series, and described PN junction is made by the P type or the N type thermoelectric material of the cylinder bodily form or hexahedron.P knot and N knot are connected in series by flow deflector, are added with the insulation and thermal insulation filler in the space between P knot and N knot, to keep the bigger temperature difference in thermo-electric generation sheet two ends.The upper surface of described PN junction and lower surface all are coated with ceramic substrate, and the another side that ceramic substrate does not cover PN junction scribbles silica gel.The anode and the negative terminal of the PN junction that is connected in series are in the same side, and draw by two lead-in wires, and the upper side of leaded PN junction of drawing is a cold junction, and the downside that does not have the PN junction of drawing is the hot junction.Ceramic substrate covers the cold junction and the hot junction of PN junction respectively, forms huyashi-chuuka (cold chinese-style noodles) and hot side.Be coated with copper radiating rib on the ceramic substrate of huyashi-chuuka (cold chinese-style noodles), be coated with copper sheet on the ceramic substrate of hot side, copper radiating rib and copper sheet make screw by epoxy resin and nut couples together.Space between copper sheet and copper radiating rib also is filled with the insulation and thermal insulation filler, causes the two ends temperature difference too small to prevent cross-ventilation.

Described power management module comprises energy-storage module, boost module, step-down module and constant-current source module.The electric energy of temperature-difference power generation module output is transferred to boost module through accumulator, gives step-down module and constant-current source module for power supply, described step-down module and the parallel connection of constant-current source module more respectively.Described boost module is made up of LTC3105 chip and peripheral circuit thereof; Because temperature difference electricity generation device is exported the excessive or too small LTC3105 of the causing chip of electric energy cisco unity malfunction, between boost module and temperature difference electricity generation device, be connected with energy-storage module in order to prevent.Energy-storage module comprises a ultracapacitor and two Schottky diodes, be connected on the ultracapacitor behind the Schottky diode of the output of temperature difference electricity generation device by serial connection, by being connected to boost module behind another Schottky diode, form T type structure again.Described step-down module is made up of AMS1117-3.3 chip and peripheral circuit thereof, and the 5V electric energy of boost module output is input to the step-down module, obtains stable 3.3V output through the step-down of step-down module, powers to wireless sensor module.Described constant-current source module is made up of TL431 chip and peripheral circuit thereof, and there is reference voltage 2.5V its inside, by regulating corresponding outer meeting resistance, just can obtain different output currents, such as the resistance of selecting 2.49K Ω, just can obtain the electric current of 1mA.

Described wireless sensor module is made up of backstage and foreground two parts.Back partition comprises first single-chip microcomputer, a ZigBee module, switching tube, A/D, A/D module and transducer, organizes switching tube, a plurality of A/D module and a plurality of transducer more and forms many group load in parallel.The quantity of load is variable.In every group of load, an end of a switching tube links to each other with an A/D module, and the other end of this A/D module links to each other with a transducer, and the other end of this switching tube is connected to first single-chip microcomputer.The other end of many group switching tubes is received on the different I/O pin of first single-chip microcomputer.Described A/D connects between the temperature difference electricity generation device and first single-chip microcomputer, by the output voltage of A/D sampling temperature difference electricity generation device and be transferred in first single-chip microcomputer, first single-chip microcomputer is controlled opening or turn-offing of the switching tube that links to each other with transducer according to the size of temperature difference electricity generation device output voltage.The one ZigBee module is connected on the corresponding function pin of first single-chip microcomputer.Receive or send data by first Single-chip Controlling the one ZigBee module, with sensor to data send by wireless mode, and receive the control command that foreground partition sends over by wireless mode.Foreground partition is the control and the display part of wireless sensor module, and it is made up of the 2nd ZigBee module, second singlechip, USB serial ports, USB Serial Port Line and terminal.Wherein the 2nd ZigBee module and USB serial ports are connected on the function pin of second singlechip.Like this, control on the data storage area that stores into after the 2nd ZigBee module receives the wireless signal of back partition transmission and does corresponding processing in the second singlechip by second singlechip, by the USB Serial Port Line foreground partition and terminal are coupled together then, video data on terminal, control interface by terminal sends relevant instruction in second singlechip simultaneously, deals with the back again and send by the 2nd ZigBee module in second singlechip.First single-chip microcomputer receives corresponding instruction and processes back control disconnection or switching tube that access is connected with transducer, promptly changes the size that inserts load, is implemented in the purpose that foreground partition manually changes access load size.Meanwhile, can come timesharing to insert several groups of different transducers or adopt step mode to work according to the size of the output voltage of temperature difference electricity generation device, to realize controlling the purpose that power supply inserts the load size according to electric equipment temperature difference size by a transducer.

Described electromagnetic screen is divided into electrical barrier devices and magnetic shielding device two parts, electrical barrier devices and magnetic shielding device are enclosed in the outside of the circuit part of being made up of power management module and wireless sensor module, the screw of making by heat-barrier material between electrical barrier devices, magnetic shielding device and the circuit part three is connected with nut and fixes, electrical barrier devices adopts the material of high conductivity such as copper or aluminium, magnetic shielding device adopts ferromagnetic material to make, and can as required electrical barrier devices or magnetic shielding device be installed in outermost.Disturb strong and magnetic interference can ignore the time when electric field in the external environment in addition, electrical barrier devices can only be installed; When the strong and electric field of magnetic interference in the external environment disturbs can ignore the time, magnetic shielding device can only be installed.In electromagnetic screen, have aperture, power management module and temperature difference electricity generation device are coupled together by lead.

The present invention compares with prior art, has the following advantages:

1. still can stablize under the lower temperature difference, work reliably, and the operating time is long, power output is big;

2. by adding the very little insulation and thermal insulation filler of thermal conductivity and taking to add measure such as copper radiating rib at cold junction, can make the hot cold junction of thermoelectric sheet keep the bigger temperature difference and stable, its generated output and efficient are higher;

3. need not to increase extra power supply measure, the heat energy that discharges when directly adopting electric equipment operation generates electricity, the advantage that possesses energy-conserving and environment-protective, and control is powered to multiple sensor simultaneously when electric energy is superfluous, realize making full use of of electric energy, when electric energy is not enough, take the batch (-type) mode to power, also can manually change the size that inserts load simultaneously according to the control interface of terminal;

4. wireless sensor module is carried out wireless transmission and reception by utilizing Single-chip Controlling ZigBee module, adopts wireless transmission and control mode, possess the remote-operated advantage of energy, and cost is low, and working stability is reliable;

5. the present invention is applicable to the power demands of multiple different sensors, and wireless sensor module can send the data that the transducer device collects by intermittent operation mode by Wireless transmission mode.

6. the present invention designs electromagnetic screen, can prevent that the electromagnetic interference in the electric equipment operation from causing the power supply cisco unity malfunction.

Description of drawings

Fig. 1 is used for the general illustration of the passive power supply of electric equipment detection for the present invention;

Fig. 2 a is a temperature difference electricity generation device structural representation of the present invention, and Fig. 2 b is the structural representation of single PN kink of the present invention;

Fig. 3 is the circuit theory schematic diagram of electric power management circuit of the present invention;

Fig. 4 is a ZigBee wireless sensor module electrical block diagram of the present invention, and wherein Fig. 4 a is the back partition structural representation, and Fig. 4 b is the foreground partition structural representation;

Fig. 5 is the structural representation of electromagnetic screen of the present invention, and wherein Fig. 5 a is the vertical view of electromagnetic screen, and Fig. 5 b is the end view of electromagnetic screen.

Embodiment

Further specify the present invention below in conjunction with the drawings and specific embodiments.

The present invention comprises temperature difference electricity generation device, power management module, wireless sensor module and electromagnetic screen.As shown in Figure 1, the hot side of described temperature difference electricity generation device directly is attached to the position that electric equipment produces used heat, the waste-heat power generation that discharges when utilizing electric equipment operation.Temperature difference electricity generation device output handle through power management module after, exporting stable voltage and current powers to wireless sensor module, wireless sensor module with sensor acquisition to related data transmit by Wireless transmission mode, and on terminal, show, simultaneously can control whether cut-in operation of related sensor by the control interface of terminal.Periphery in power management module and wireless sensor module is surrounded by electromagnetic screen, causes the power supply cisco unity malfunction to prevent outside electromagnetic interference.

Shown in Fig. 2 a, described temperature difference electricity generation device is made up of several parts such as thermo-electric generation sheet, copper radiating rib and copper sheets.The thermo-electric generation sheet is served as reasons and many PN junction is formed by flow deflector series connection.Be added with the insulation and thermal insulation filler in the space between PN junction, have the incombustible of lower thermal conductivity such as aeroge etc.The upper surface of described PN junction and lower surface all are coated with ceramic substrate, and the another side that ceramic substrate does not cover PN junction scribbles silica gel.The anode and the negative terminal of the PN junction that is connected in series are in the same side, and draw by two lead-in wires, and the upper side of leaded PN junction of drawing is a cold junction, and the downside that does not have the PN junction of drawing is the hot junction.Ceramic substrate covers the cold junction and the hot junction of PN junction respectively, forms huyashi-chuuka (cold chinese-style noodles) and hot side.Be coated with copper radiating rib on the ceramic substrate of huyashi-chuuka (cold chinese-style noodles), the ceramic substrate of huyashi-chuuka (cold chinese-style noodles) is bonding by heat-conducting silicone grease and copper radiating rib; Be coated with copper sheet on the ceramic substrate of hot side, the hot silicone grease of ceramic substrate admittance and the copper sheet of hot side are bonding; Copper radiating rib is made screw with copper sheet by epoxy resin and is connected with nut.Space between copper sheet and the copper radiating rib is filled with the insulation and thermal insulation filler, causes the cold and hot two ends temperature difference to diminish to prevent outside air convection, and then strengthens the power generation performance of temperature difference electricity generation device.Fig. 2 b is the structural representation of single PN kink, and wherein P knot or N knot are cylinder or the hexahedrons of being made by thermoelectric material, and the P knot is connected by flow deflector with the N knot.

As shown in Figure 3, described power management module comprises energy-storage module, boost module, step-down module and constant-current source module.The output of temperature difference electricity generation device is transferred to boost module through energy-storage module, gives step-down module and constant-current source module for power supply more respectively.Described step-down module and the parallel connection of constant-current source module.The input of step-down module and constant-current source module all is connected to the output of boost module.Described energy-storage module is composed in series by ultracapacitor C1 and two Schottky diode D1, D2 of 0.2F/3.5V, and the effect of Schottky diode D1, D2 is in order to prevent current reflux.The end of the first Schottky diode D1 connects the output VCC of temperature difference electricity generation device, the end of the other end of the first Schottky diode D1 and ultracapacitor C1, and the end of the second Schottky diode D2 links to each other, another termination GND of ultracapacitor C1, the other end of the second Schottky diode D2 is connected with 8 pin of boost module LTC3105 chip.Described boost module is made up of LTC3105 chip and peripheral circuit thereof, has the ability that the 0.225-5V input is converted to 5V output.In the boost module, the two ends of inductance L 1 join 5 pin of a termination LTC3105 chip of first resistance R 1, another termination GND of first resistance R 1 with 8 pin and 9 pin of LTC3105 chip respectively; 12 pin of one termination LTC3105 chip of first capacitor C 2, another termination GND of first capacitor C 2.7 pin of LTC3105 chip meet GND, the 3rd capacitor C 3 connects 2 pin of LTC3105 chip, the two ends of second resistance R 2 connect 1 pin and 11 pin of LTC3105 chip respectively, and the two ends of the 3rd resistance R 3 meet 1 pin and the GND of LTC3105 chip respectively, and the resistance value ratio of second resistance R 2 and the 3rd resistance R 3 is 4:1.One end of the 4th capacitor C 4 and 11 pin of LTC3105 chip join, another termination GND of the 4th capacitor C 4.11 pin of LTC3105 chip are as output, receive an end of 3 pin of AMS1117-3.3 chip of step-down module and the resistance R in the constant-current source module 5, the 7th capacitor C 7 respectively, and the c utmost point of triode BG1.The step-down module adopts AMS1117-3.3 chip and peripheral circuit thereof to form.By the 5V output of boost module being connected to the input of step-down module, just can obtain exporting the voltage of 3.3V.Wherein, the 5th capacitor C 5 two ends connect 3 pin and 1 pin of AMS1117-3.3 chip respectively, and the two ends of the 6th capacitor C 6 connect 2 pin and 1 pin of AMS1117-3.3 chip respectively.The constant-current source module is made up of TL431 chip and peripheral circuit thereof, wherein, after joining, one end of the 5th resistance R 5 and the 7th capacitor C 7 joins with 1 pin of TL431 chip and the b utmost point of triode BG1,2 pin of one termination TL431 chip of the 6th resistance R 6 and the e utmost point of triode BG1,3 pin of another termination TL431 chip of the 6th resistance R 6,3 pin of TL431 chip join as the end of output with wireless sensor module, another termination of wireless sensor module GND, like this, just, can satisfy the demand of operative sensor with constant current source power supply.

Described wireless sensor module is divided into backstage and foreground two parts, wherein back partition is shown in Fig. 4 a: back partition comprises first single-chip microcomputer 1, a ZigBee module 2, switching tube, A/D module and transducer, organizes switching tube, a plurality of A/D module and a plurality of transducer more and forms the load of many groups.In every group of load, an end of a switching tube links to each other with an A/D module, and the other end of this A/D module links to each other with a transducer, and the other end of this switching tube is connected to first single-chip microcomputer 1.The other end of many group switching tubes is received on the different I/O pin of first single-chip microcomputer 1.The data of A/D module pick-up transducers are delivered to and by a ZigBee module 2 described data are sent after being converted to corresponding form in first single-chip microcomputer 1.Foreground partition receives the data that the backstage is transmitted by the 2nd ZigBee module 3 shown in Fig. 4 b, after handling through second singlechip 4, be written in the data storage area in the second singlechip 4; The foreground links to each other by the USB Serial Port Line with terminal, and be shown on the terminal send instructions to the data of reading of data memory block in the second singlechip 4 by the USB Serial Port Line after, meanwhile also can control the interface and send instructions to second singlechip 4 control the 2nd ZigBee module 3 and send relevant instruction, and opening or turn-offing of the switching tube that links to each other with transducer controlled in the back that is correspondingly processed in first single-chip microcomputer 1 of backstage to the backstage by terminal.The time of control reading of data just can be realized monitoring in real time or discontinuity monitoring respective sensor data, and judges the electric equipment operation state.Back partition receives the output voltage through the temperature difference electricity generation device of A/D sampling, and this output voltage is transferred in first single-chip microcomputer 1, by first single-chip microcomputer 1 output voltage of the temperature difference electricity generation device of A/D sampling is compared with the set point upper limit again, if surpass the set point upper limit, it is open-minded then to control a switching tube that is in off state by first single-chip microcomputer 1, this process repeatedly all is in opening state up to the output voltage of temperature difference electricity generation device less than the set point upper limit or all switching tubes; If the output voltage of temperature difference electricity generation device is less than the set point lower limit, then be in a switching tube shutoff of opening state by 1 control of first single-chip microcomputer, this process repeatedly all is in off state up to the output voltage of temperature difference electricity generation device greater than set point lower limit or all switching tubes; The output of temperature difference electricity generation device is still less than the set point lower limit if all switching tubes all turn-off, actuating switch pipe not then, up to the output voltage of temperature difference electricity generation device by after reaching the set point lower limit after to the ultracapacitor charging again switching tube of conducting insert transducer, when the output voltage of temperature difference electricity generation device less than set point under in limited time, on-off switching tube then, so repeatedly, to realize the mode of operation of intermittence.

Described electromagnetic screen as shown in Figure 5, Fig. 5 a is the vertical view of electromagnetic screen, Fig. 5 b is the end view of electromagnetic screen.Electrical barrier devices is to adopt the shielding case of the material one-tenth of high conductivity such as red copper or aluminium, magnetic shielding device is to adopt ferromagnetic material to make the shielding case that forms, the two couples together by screw and the nut of being made by insulating material, electrical barrier devices is enclosed in the circuit part outside of being made up of power management module and wireless sensor module, and described circuit part is isolated by copper post and electrical barrier devices again.Magnetic shielding device is enclosed in the electrical barrier devices skin.Also can as required the position of magnetic shielding device and the position of electrical barrier devices be exchanged.Have an aperture on the electromagnetic screen, be used for the output of temperature difference electricity generation device is connected with the input of power management module.

Claims (10)

1. one kind is used for the passive power supply that electric equipment detects, and it is characterized in that described power supply comprises temperature difference electricity generation device, power management module, wireless sensor module and electromagnetic screen; The hot side of described temperature difference electricity generation device directly is attached to the position that electric equipment produces used heat, the waste-heat power generation that discharges when utilizing electric equipment operation; The temperature difference electricity generation device electricity can be transferred to power management module, and the stable voltage and current of output is powered to wireless sensor module after the power management module adjustment; Power management module and wireless sensor module periphery are surrounded by electromagnetic screen.
2. the passive power supply that is used for the electric equipment detection according to claim 1 is characterized in that, described temperature difference electricity generation device is by the thermo-electric generation sheet, and copper radiating rib and copper sheet are formed; Described thermo-electric generation sheet is formed by many PN junction is connected in series; Described PN junction is made by the P type or the N type thermoelectric material of the cylinder bodily form or hexahedron; P knot and N knot are connected in series by flow deflector, are added with the insulation and thermal insulation filler in the space between P knot and N knot; The upper surface of described PN junction and lower surface all are coated with ceramic substrate, and the another side that ceramic substrate does not cover PN junction scribbles silica gel; The anode and the negative terminal of the PN junction that is connected in series are in the same side, and draw by two lead-in wires, and the upper side of leaded PN junction of drawing is a cold junction, and the downside that does not have the PN junction of drawing is the hot junction; Ceramic substrate covers the cold junction and the hot junction of PN junction respectively, forms huyashi-chuuka (cold chinese-style noodles) and hot side; Be coated with copper radiating rib on the ceramic substrate of huyashi-chuuka (cold chinese-style noodles), be coated with copper sheet on the ceramic substrate of hot side, copper radiating rib and copper sheet make screw by epoxy resin and nut couples together; Space between copper sheet and copper radiating rib also is filled with the insulation and thermal insulation filler.
3. the passive power supply that is used for the electric equipment detection according to claim 1 is characterized in that described power management module comprises energy-storage module, boost module, step-down module and constant-current source module; The output of temperature difference electricity generation device is transferred to boost module through energy-storage module, gives step-down module and constant-current source module for power supply more respectively; Described step-down module and the parallel connection of constant-current source module; The input of step-down module and constant-current source module all is connected to the output of boost module.
4. the passive power supply that is used for the electric equipment detection according to claim 3 is characterized in that described energy-storage module is composed in series by ultracapacitor (C1) and two Schottky diodes (D1, D2) of 0.2F/3.5V; One end of first Schottky diode (D1) connects the output (VCC) of temperature difference electricity generation device, the other end of first Schottky diode (D1) links to each other with an end of ultracapacitor (C1) and an end of second Schottky diode (D2), another termination GND of ultracapacitor (C1), the other end of second Schottky diode (D2) is connected with 8 pin of boost module LTC3105 chip.
5. the passive power supply that is used for the electric equipment detection according to claim 3 is characterized in that described boost module is made up of LTC3105 chip and peripheral circuit thereof; In the boost module, the two ends of inductance (L1) join 5 pin of a termination LTC3105 chip of first resistance (R1), another termination GND of first resistance (R1) with 8 pin and 9 pin of LTC3105 chip respectively; 12 pin of one termination LTC3105 chip of first electric capacity (C2), another termination GND of first electric capacity (C2).7 pin of LTC3105 chip meet GND, and the 3rd electric capacity (C3) connects 2 pin of LTC3105 chip, and the two ends of second resistance (R2) connect 1 pin and 11 pin of LTC3105 chip respectively, and the two ends of the 3rd resistance (R3) meet 1 pin and the GND of LTC3105 chip respectively; One end of the 4th electric capacity (C4) and 11 pin of LTC3105 chip join, another termination GND of the 4th electric capacity (C4); 11 pin of LTC3105 chip are as output, receive an end of 3 pin of AMS1117-3.3 chip of step-down module and the resistance (R5) in the constant-current source module, the 7th electric capacity (C7) respectively, and the c utmost point of triode BG1.
6. the passive power supply that is used for the electric equipment detection according to claim 3 is characterized in that, described step-down module adopts AMS1117-3.3 chip and peripheral circuit thereof to form; The two ends of the 5th electric capacity (C5) connect 3 pin and 1 pin of AMS1117-3.3 chip respectively, and the two ends of the 6th electric capacity (C6) connect 2 pin and 1 pin of AMS1117-3.3 chip respectively.
7. the passive power supply that is used for the electric equipment detection according to claim 3, it is characterized in that, described constant-current source module is made up of TL431 chip and peripheral circuit thereof, wherein, one end of the 5th resistance (R5) and the 7th electric capacity (C7) is connected the back and joins with 1 pin of TL431 chip and the b utmost point of triode BG1,2 pin of one termination TL431 chip of the 6th resistance (R6) and the e utmost point of triode BG1,3 pin of another termination TL431 chip of the 6th resistance (R6), 3 pin of TL431 chip join as the end of output with wireless sensor module, and wireless sensor module gets another termination GND.
8. the passive power supply that is used for the electric equipment detection according to claim 1, it is characterized in that, described wireless sensor module adopts the ZigBee module to carry out wireless receiving and dispatching, described wireless sensor module is divided into backstage and foreground two parts, and wherein back partition will send by a ZigBee module (2) after the data processing of the transducer that the A/D module collects by first single-chip microcomputer (1); Foreground partition receives the data that a ZigBee module (2) is sent by second singlechip (4) by the 2nd ZigBee module (3), and communicates by letter with computer or other-end by the USB Serial Port Line.
9. the passive power supply that is used for the electric equipment detection according to claim 8 is characterized in that, in the described back partition, organizes switching tube, a plurality of A/D module and a plurality of transducer more and forms many group load in parallel; In every group of load, an end of a switching tube links to each other with an A/D module, and the other end of this A/D module links to each other with a transducer, and the other end of this switching tube is connected to first single-chip microcomputer (1); The other end of many group switching tubes is received on the different I/O pin of first single-chip microcomputer (1); First single-chip microcomputer (1) is compared the output voltage of the temperature difference electricity generation device of A/D sampling with the set point upper limit, the many groups of control switching tube is opened and turn-offed.
10. the passive power supply that is used for the electric equipment detection according to claim 1 is characterized in that described electromagnetic screen comprises electrical barrier devices and magnetic shielding device; Described electrical barrier devices adopts red copper or aluminium to make, and magnetic shielding device adopts ferrimagnet to make; Electrical barrier devices and magnetic shielding device couple together by screw and the nut of being made by Insulation Material; Electrical barrier devices is enclosed in the circuit part outside of being made up of power management module and wireless sensor module, and described circuit part is isolated by copper post and electrical barrier devices again; Magnetic shielding device is enclosed in the electrical barrier devices skin; The position of magnetic shielding device and the position of electrical barrier devices can exchange; Have an aperture on the electromagnetic screen, be used to connect the input of the output and the power management module of temperature difference electricity generation device.
CN201310092894.7A 2013-03-21 2013-03-21 A kind of passive power supply detected for electric equipment CN103219927B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310092894.7A CN103219927B (en) 2013-03-21 2013-03-21 A kind of passive power supply detected for electric equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310092894.7A CN103219927B (en) 2013-03-21 2013-03-21 A kind of passive power supply detected for electric equipment

Publications (2)

Publication Number Publication Date
CN103219927A true CN103219927A (en) 2013-07-24
CN103219927B CN103219927B (en) 2015-08-26

Family

ID=48817484

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310092894.7A CN103219927B (en) 2013-03-21 2013-03-21 A kind of passive power supply detected for electric equipment

Country Status (1)

Country Link
CN (1) CN103219927B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104577988A (en) * 2015-01-16 2015-04-29 西南石油大学 Motor protection device based on thermoelectric conversion and power supply method of motor protection device
CN105606236A (en) * 2016-03-18 2016-05-25 西安交通大学 Passive wireless temperature measurement sensor, and temperature measurement method thereof
CN105758514A (en) * 2016-03-30 2016-07-13 国网江西省电力科学研究院 Transformer-monitoring apparatus based on thermoelectric conversion energy acquisition
CN105827153A (en) * 2016-05-16 2016-08-03 深圳前海华兆新能源有限公司 Energy storage system based on single thermal-electric tank
CN105846722A (en) * 2016-05-16 2016-08-10 深圳前海华兆新能源有限公司 Energy storage system based on multiple thermoelectric tanks
CN105978125A (en) * 2016-05-16 2016-09-28 张旻澍 Power supply system based on heat-electricity tank
CN106452113A (en) * 2016-09-30 2017-02-22 长安大学 Power collection device and power collection method of piezoelectric asphalt pavement
CN110086239A (en) * 2019-05-13 2019-08-02 北京洪泰智造信息技术有限公司 A kind of electronic equipment and its heat energy utilization system and method
CN110661451A (en) * 2019-10-08 2020-01-07 中国科学院兰州化学物理研究所 Electric energy generating and storing device
CN110676062A (en) * 2019-10-08 2020-01-10 中国科学院兰州化学物理研究所 Electric energy generating and storing device and manufacturing method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201584931U (en) * 2009-12-18 2010-09-15 上海超日太阳能科技股份有限公司 Low-temperature semiconductor power generating device recycling waste heat of medium and small-sized equipment in industry to generate power
US20100230594A1 (en) * 2009-03-13 2010-09-16 Kabushiki Kaisha Toshiba Infrared solid-state image sensor
CN102928105A (en) * 2012-10-18 2013-02-13 西安交通大学 Device and method for measuring temperature of circuit breaker contact

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100230594A1 (en) * 2009-03-13 2010-09-16 Kabushiki Kaisha Toshiba Infrared solid-state image sensor
CN201584931U (en) * 2009-12-18 2010-09-15 上海超日太阳能科技股份有限公司 Low-temperature semiconductor power generating device recycling waste heat of medium and small-sized equipment in industry to generate power
CN102928105A (en) * 2012-10-18 2013-02-13 西安交通大学 Device and method for measuring temperature of circuit breaker contact

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104577988A (en) * 2015-01-16 2015-04-29 西南石油大学 Motor protection device based on thermoelectric conversion and power supply method of motor protection device
CN105606236A (en) * 2016-03-18 2016-05-25 西安交通大学 Passive wireless temperature measurement sensor, and temperature measurement method thereof
CN105606236B (en) * 2016-03-18 2018-06-26 西安交通大学 A kind of passive and wireless temperature transducer and temp measuring method
CN105758514A (en) * 2016-03-30 2016-07-13 国网江西省电力科学研究院 Transformer-monitoring apparatus based on thermoelectric conversion energy acquisition
CN105827153A (en) * 2016-05-16 2016-08-03 深圳前海华兆新能源有限公司 Energy storage system based on single thermal-electric tank
CN105846722A (en) * 2016-05-16 2016-08-10 深圳前海华兆新能源有限公司 Energy storage system based on multiple thermoelectric tanks
CN105978125A (en) * 2016-05-16 2016-09-28 张旻澍 Power supply system based on heat-electricity tank
CN105846722B (en) * 2016-05-16 2018-10-30 深圳前海华兆新能源有限公司 Energy-storage system based on more thermo-electrically slots
CN105827153B (en) * 2016-05-16 2018-11-02 深圳前海华兆新能源有限公司 Energy-storage system based on single thermo-electrically slot
CN105978125B (en) * 2016-05-16 2018-11-09 厦门理工学院 Power supply system based on thermo-electrically slot
CN106452113A (en) * 2016-09-30 2017-02-22 长安大学 Power collection device and power collection method of piezoelectric asphalt pavement
CN110086239A (en) * 2019-05-13 2019-08-02 北京洪泰智造信息技术有限公司 A kind of electronic equipment and its heat energy utilization system and method
CN110661451A (en) * 2019-10-08 2020-01-07 中国科学院兰州化学物理研究所 Electric energy generating and storing device
CN110676062A (en) * 2019-10-08 2020-01-10 中国科学院兰州化学物理研究所 Electric energy generating and storing device and manufacturing method thereof

Also Published As

Publication number Publication date
CN103219927B (en) 2015-08-26

Similar Documents

Publication Publication Date Title
US10147922B2 (en) Power storage device, power storage system, electronic apparatus, electric vehicle, and electric power system
CN103329338B (en) Battery pack and power consumption apparatus
US9184631B2 (en) Photovoltaic power generation system
CN103746639B (en) A kind of wind photovoltaic hybrid movable base station intelligent power supply system
US8532833B2 (en) Grid connected power storage system and integration controller thereof
CN106532186B (en) A kind of charging method, charging circuit and mobile terminal
US10389142B2 (en) Electric storage system
CN202854569U (en) Solar photovoltaic assembly level monitoring system
CN201185355Y (en) High voltage line induction electricity-taking apparatus
CN204154825U (en) A kind of alternating-current charging pile failure detector
CN100520845C (en) Wireless on-line monitoring system and method with electric distribution network cable connector running state
KR20130124772A (en) System and method for converting electric power, and apparatus and method for controlling the system
CN103354963A (en) Secondary battery cell, battery pack and power consumption device
CN201260290Y (en) Heat radiating apparatus for handhold mobile device
CN103887834B (en) A kind of accumulator battery flexibility balance charge/discharge management rectification module, Apparatus and system
CN102680125B (en) Wireless temperature sensor
CN102636291A (en) IGBT (insulated gate bipolar transistor) conjunction temperature detection device and method thereof
CN201628762U (en) Overall characteristic test system of DC power supply
CN105260840B (en) A kind of internet+schedulable load synthesis scheduling system
CN103168406A (en) Battery pack, method for charging/discharging same, and power consumption device
Collin Advanced load modelling for power system studies
CN103207334B (en) A kind of test macro of electric automobile combined charging equipment and method of testing thereof
CN105164884B (en) The System and method for that single phase poaer supply is coupled with polyphase electrical system
CN202929124U (en) Substation high-voltage shunt capacitor intelligent online monitoring system
CN103344839A (en) Wireless detection method and device for contact resistance of busbar joint

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150826

Termination date: 20160321

CF01 Termination of patent right due to non-payment of annual fee