CN206135553U - A from draw -out power supply device for power equipment condition detects sensor - Google Patents
A from draw -out power supply device for power equipment condition detects sensor Download PDFInfo
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- CN206135553U CN206135553U CN201621153399.8U CN201621153399U CN206135553U CN 206135553 U CN206135553 U CN 206135553U CN 201621153399 U CN201621153399 U CN 201621153399U CN 206135553 U CN206135553 U CN 206135553U
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Abstract
The utility model discloses a from draw -out power supply device for power equipment condition detects sensor, include that the ability unit is got to energy storage control unit, voltage, ability unit, energy storage unit are got to the electric current, switch tube that the energy storage unit includes stabilivolt, filter capacitance, be connected with filter capacitance's a polar plate, the inductance of establishing ties with the switch tube other end, with electric capacity, energy -storage capacitor that the inductance other end is connected, another polar plate of electric capacity is connected with another polar plate of filter capacitance, the energy storage control unit includes low dropout regulator, voltage detection chip, first diode and second diode, a diode string allies oneself with between low dropout regulator's 1 pin and voltage detection chip's 1 pin, and low dropout regulator's 2 pins are connected with voltage detection chip's 2 pins, and the second diode is connected between low dropout regulator's 3 pins and voltage detection chip's 1 pin. The utility model discloses with low costs, working life is long, can provide reliable energy supply for the sensor.
Description
Technical field
This utility model is related to a kind of self-energizing supply unit for status of electric power detection sensor, belongs to electric power
Condition Detection technical field.
Background technology
State Grid Corporation of China proposes strong intelligent grid, i.e., with extra-high voltage grid as bulk transmission grid, electric network coordination at different levels sends out
Based on the strong rack of exhibition, with communication information platform to support, with informationization, automatization, interactive feature, comprising electric power
The generating of system, transmission of electricity, power transformation, distribution, six big links of electricity consumption and scheduling, cover all electric pressures, realize " flow of power, letter
The very high integrity fusion of breath stream, Business Stream ", it is mutual with strong reliable, economical and efficient, clean environment firendly, transparent opening and close friend
The modern power network of dynamic intension.
The core of intelligent grid is that Internet communication technology is interconnected with existing network system to realize the intelligence of electrical network
Change, cover the collection of data, data transfer, information integration, optimize, represent 5 aspects, therefore, sensing coupling, communication, control
It is, in the form and Operation of Electric Systems pattern for not changing existing electrical network, also to improve constantly and optimizing electrical network fortune Deng new technique
Row state and developing direction.
Sensor is the key element of intelligent grid.Needs install big quantity sensor so as to acquisition system state in electrical network
Parameter and equipment " health " situation, and the process integration such as collected real time information and resource management, simulation and emulation, will
Valid data are delivered to control room, to improve operation and the efficiency of electrical network.
Sensor type is varied, has following several using more in engineering：Traditional electric power mutual-inductor takes station
Electricity consumption by high pressure, high current conversion become low pressure, small current, extract voltage, electric current, power, frequency, power factor (PF), phase angle,
The physical parameters such as harmonic wave；Another sensor is directly powered by external cell and realizes the work of sensor, including equipment
RFID tag, GPS location sensor, temperature sensor, Leakage Current sensor, vibrating sensor etc.；Fibre Optical Sensor is utilized
The good characteristic of optical fiber insulation characterisitic converts electrical signals to optical signal, and being sent to low-pressure side by optical cable carries out data acquisition
's；Also have using the principle of laser irradiation photovoltaic cell generation electric energy to supply energy for sensor.
Stand with power supply power supply mode, needing to lay special current supply circuit, and generally single take voltage or electric current is made
For energy source, power supply reliability is low.
Battery power supply mode is affected larger by extraneous factor, according to China's standard, valve controlled sealed lead-acid accumulator electric discharge
When, if temperature is not standard temperature (25 DEG C), the actual electricity that actual measurement electricity is converted into standard is needed, i.e.,：
Ce=Cr/ [1+K (t-25)]
In formula：Ce --- actual electricity；
Cr --- battery discharge capacity under non-standard temperature；
The ambient temperature of t --- electric discharge；
K --- temperature coefficient；K=0.006/ DEG C during 10 hour rate capacity test, K=during 3 hour rate capacity test
0.008/ DEG C, K=0.0085/ DEG C during 2 hour rate capacity test, K=0.01/ DEG C during 1 hour rate capacity test.
Analysis can obtain valve controlled sealed lead-acid accumulator optimum working temperature for 25 DEG C.Temperature more than 25 DEG C after capacity open again
Beginning is drastically reduced.After 60 DEG C, the life-span of battery is greatly reduced.In addition device temperature is very high under high current operating mode, this for
Sensor using battery is also very fatal, and high temperature can cause battery gently then to reduce service life, heavy then cause battery leakage very
To blast.Liquid in battery is good conductor, and leakage, blast can all cause high voltage equipment insulation to damage and cause short trouble.
Fibre Optical Sensor key link is the conversion sensor that physical quantity is converted to optical signal, the photoelectricity of most of physical quantity
Sensor is not also succeeded in developing, and the acquisition system cost of light-electricity conversion sensor is higher, and general equipment is difficult big rule
Mould is used.Engineer applied it is more have temperature grating sensor and vibration optical sensor.There is a method in which using traditional biography
Signal is collected in sense, then converts electrical signals to optical signal by optical-electrical converter, and by optical fiber low-pressure side is sent to.But in height
Pressure side still needs power supply to support sensor and optical-electrical converter work.
Electric energy is converted laser light into, for working sensor, principle is to change electricity by the high power laser pipe of low-pressure side
For laser beam, high-pressure side is sent to by optical fiber.There are LASER Discharge Tube and photovoltaic cell in high-pressure side, and laser is radiated at photovoltaic cell
On, battery converts light to unidirectional current and uses for relevant device, and its power is less, can typically provide 5V, 100mA both 500mW
Power.Its exist subject matter be：One is that cost is high, and its purchase cost is often ten times even two of sensor purchase cost
Ten times, economic implications are had been out；Two is to install to be difficult, and optical fiber cloth is put into into low-pressure side from high-pressure side, and quantities is very huge
Greatly, due to being laid in equipment appearance, easily it is damaged；Three is that power is low, and maximum can only provide the power of 5V, 100mA, less than big
The power requirement of operative sensor, may be only available for fraction sensor.
Utility model content
In view of the shortcomings of the prior art, this utility model provide a kind of low cost, long working life for electric power
The self-energizing supply unit of Condition Detection sensor, for sensor reliable energy supply is provided.
To achieve these goals, this utility model is by the following technical solutions realizing：
A kind of self-energizing supply unit for status of electric power detection sensor of the present utility model, including energy storage control
Unit processed, voltage take energy unit, and (structure is one layer of aluminium foil film of insulation parcel, as coupled voltages pole plate, with conventional capacitance coupling
Close pole plate indifference, so as to voltage of the present utility model take can unit repeat no more), current energy-taking unit and voltage take can be single
The energy-storage units that unit and current energy-taking unit outfan are connected, the energy storage control unit is connected with energy-storage units；Energy storage
Unit includes stabilivolt, is connected in parallel on the filter capacitor at the stabilivolt two ends with opening that a pole plate of filter capacitor is connected
Electric capacity that the inductance that Guan Guan is in series with the switching tube other end is connected with the inductance other end, the energy storage for being connected in parallel on electric capacity two ends
Electric capacity, another pole plate of the electric capacity is connected with another pole plate of filter capacitor, and the inductance is electric with electric capacity composition LC
Road；Energy storage control unit includes low pressure difference linear voltage regulator, voltage checking chip, the first diode D1～D3 and the second diode
D4；The first diode D1～D3 is connected on No. 1 pin of low pressure difference linear voltage regulator and No. 1 pin of voltage checking chip
Between, No. 2 pins of the low pressure difference linear voltage regulator are connected with No. 2 pins of voltage checking chip, the two or two pole
Pipe D4 is connected between No. 3 pins of low pressure difference linear voltage regulator and No. 1 pin of voltage checking chip.
Above-mentioned switching tube is formed by the cascade of two-stage diac.
Above-mentioned current energy-taking unit includes iron core and the diversion belt being spirally wrapped on iron core.
The length of above-mentioned iron core is 20cm, width is 2cm, thickness is 2mm.
The width of above-mentioned diversion belt is 4mm, thickness is 3mm, is wound at intervals of 2mm.
Above-mentioned first diode D1～D3 specifically uses silicon diode, and the second diode D4 specifically uses germanium two
Pole pipe.
This utility model obtains energy using the electromagnetic field of high-tension electricity equipment itself, possesses voltage, the electricity of parallel running
The systems of two sets acquisition energy of stream, both can be under high-voltage case using isolating coupling electrode principle collection voltages energy, can be
Energy is obtained in the high current that high current situation foundation electromagnetic induction principle flows through from equipment, two take energy unit and work independently,
It does not interfere with each other, so as to provide regulated power for high pressure equipment sensor.Its core cell includes：
Voltage takes can unit, current energy-taking unit, energy-storage units and energy storage control unit
First, voltage takes energy unit
It is the isolated coupling of isolated coupling electrode that isolated coupling electrode obtains the nucleus equipment of electric field energy from high voltage electric field
Electrode, it gets and can be exchanged into after space charge electric energy, and what is now obtained is high voltage, low current signal.
Conductor in electric field obtains the geometric properties (size and shape) of unit potential institute subfam. Spiraeoideae, size and conductor
It is relevant.If isolated coupling electrode carried charge is q, potential is V, and experiment proves q ∝ V, i.e. q=CV.C is electric capacity, unit farad, it
Represent that conductor obtains unit potential institute subfam. Spiraeoideae, size is relevant with the geometric properties of conductor (size and shape).
Aluminum laminated films are laid in the flexible iron core surface of current energy-taking unit, and with insulation parcel, it is ensured that aluminium foil film with
Electric insulation is realized between iron core, power equipment.The thin film is the isolated coupling electrode that voltage takes energy unit, will by wire
The electric energy being coupled on thin film is transferred to subsequent treatment module.
2nd, electric current acquiring unit has following key link：
On using conventional current transformer basis, this utility model has two technological break-throughs：
1st, flexible iron core
Engineer applied result is proved, when the iron core thickness is 1mm, when the electric current in power equipment only needs 12A, and iron core
It is rapidly saturated, it is ensured that the unit can saturation rapidly in normal work, it is to avoid the abnormal heating under high current operating mode.
2nd, water conservancy diversion copper cash is encapsulated on iron core
Using printed circuit board process, the copper diversion belt for electromagnetic coupled is spirally wound on iron core, this is led
Stream bandwidth 4mm, thickness 3mm, are spaced 2mm, and are packaged.
Take above-mentioned measure so that the current energy-taking unit volume is little, perfect heat-dissipating, softness is similar with plastics,
Can easily be wrapped on equipment.
3rd, energy-storage units
1st, switching tube
Switching tube is one of this utility model technological core, realizes and for high-tension electricity, weak current to be converted to low-voltage, big electricity
Stream.This utility model completes the effect of switching tube using two-stage bidirectional high pressure diac.When the voltage reserve of electric capacity reaches
To after rated voltage, the conducting of high pressure diac.Circuit carries out energy storage, blood pressure lowering by lc circuit to storage capacitor.Realizing will
High voltage (220V～3000V), weak current is converted to the DC source of direct current 10V, 200mA, so as to reach Switching Power Supply
Effect.
2nd, energy-storage travelling wave tube
Electricity is transported to energy-storage units by electric current power taking and voltage electricity getting device, and general circuit can consider chargeable lithium electricity
Pond either super capacitor or other electric capacity.
If device needs to be operated in 10kV electric pressures, from paster solid tantalum electric capacity as storage capacitor.Because 10kV
The power limited that electric pressure is obtained, if from rechargeable battery or super capacitor, its Leakage Current is very big, when can cause energy storage
Between very long, the restricted lifetime of rechargeable battery in addition, if service life of equipment can be affected from rechargeable battery.
It is to reveal very little from tantalum electric capacity one, only 1uA；Two is because tantalum electric capacity does not have electrolyte, so fault rate
Very low, the life-span is permanent.
4th, energy storage control unit
Electric pressure control valve is served as using low pressure difference linear voltage regulator (LDO, voltage control chip), i.e., when voltage reserve to compared with
During high level, low pressure difference linear voltage regulator is opened, allow load to obtain power supply.Low pressure difference linearity is closed when storage element energy is not enough
Manostat, allows load to lose power supply, is charged energy-storage units.
It is more preferable energy storage from the purpose of voltage control chip, improves tank voltage threshold.Such as equipment normal work
When 3.3V, voltage chips may require that reach in energy storage and just open after 5.8V LDO (low pressure difference linear voltage regulator) chip.When voltage is less than
After 3.3V, control chip should turn off LDO chips.So increased voltage feedback circuit in circuit.
This utility model compares with traditional supply unit and possesses following advantage：
1. long working life.Most long-acting lithium battery only has 5 years or so service lifes.And this utility model can reach and
The identical service life of primary equipment, for related sensor reliable energy supply is provided, and power is high；
2. both energy can be obtained by voltage, also energy can be obtained by electric current.It is simple that energy is taken using current transformer
Method, it is impossible to tackle the operating mode without electric current in circuit, and this utility model can be with the effectively solving problem；
3. high pressure isoelectric level pattern is operated in, and do not insulate hidden danger.On high pressure equipment, insulation and electric field are not destroyed
Distribution.Whole device volume is very compact, can arbitrarily be arranged according to equipment profile.Without high-low pressure contact, it is operated in and waits electric
Bit pattern, therefore the hidden danger that do not insulate, and be easily installed.
4. cheap, it is easy to promote.The components and parts that this utility model is related to select ripe device, simply to device
Leakage Current, working life have strict demand.So apparatus cost is cheap, its cost only have laser energy taking device thousand/
One.
Description of the drawings
Fig. 1 is high pressure equipment sensor self-energizing supply unit schematic diagram；
Fig. 2 is energy-storage units schematic diagram；
Fig. 3 is energy storage control unit schematic diagram (LDO is low pressure difference linear voltage regulator).
Specific embodiment
Technological means, creation characteristic, reached purpose and effect to realize this utility model is easy to understand, below
With reference to specific embodiment, this utility model is expanded on further.
This utility model provides a kind of self-energizing supply unit for status of electric power detection sensor, the device profit
Energy is obtained with the electromagnetic field of high voltage electric equipment itself, possesses voltage, the system of two sets of acquisition electric energy of electric current of parallel running,
Both coupled capacitor principle can have been utilized under high-voltage case according to the voltage acquisition energy of equipment, can be in high current situation according to electricity
Magnetic induction principle obtains energy from the electric current that equipment flows through, so as to supply energy for status of electric power detection sensor.
Energy-storage units take with energy storage control unit for voltage can unit and current energy-taking units shared unit.Energy-storage units will
The energy reserve for taking energy unit acquisition to get up used for sensor.When energy storage control unit needs energy when sensor operation,
Control unit is opened in time, and energy-storage units will provide electric energy for sensor；When the not enough power supply of energy storage device, energy storage control is single
First closing control unit in time, energy storage control unit proceeds energy storage.
This utility model comprehensively utilizes two sets of energy capturing systems, extends the power work life-span so that the work of sensor
Make the life-span more than equipment interruption maintenance gap periods, improve power supply reliability；And without high-low pressure contact, it is operated in isoelectric level
Pattern, eliminates insulation hidden danger, cheap, realizes economic, the reliable supply of sensor electric energy, has well to practical application
Directive significance.
High pressure equipment asks for power supply schematic diagram as shown in figure 1, it will be seen from figure 1 that this utility model is by four
It is grouped into, i.e.,：Voltage takes can unit, current energy-taking unit, energy-storage units and energy storage control unit.Separately below from aforementioned four
Power supply of partly asking for high pressure equipment sensor is introduced, and although this device is for power system high pressure equipment prison
Survey sensor to propose, but have general.
Core of the present utility model is the voltage acquisition energy using coupled capacitor principle according to equipment, according to electromagnetic induction
Principle, the electric current flow through from equipment obtains energy.This device possesses voltage, the system parallel running of two sets of acquisition energy of electric current,
Segregated capacitive principle can be utilized under high-voltage case according to the voltage acquisition energy of equipment, can be in high current situation according to electricity
Magnetic induction principle obtains energy from the electric current that equipment flows through, referring to Fig. 1.
First, voltage takes energy unit
There is powerful high voltage electric field in high pressure equipment, the core that energy is this programme is obtained from high voltage electric field.Popular
Say to be exactly the means that energy is obtained by voltage.The nucleus equipment for obtaining electric field energy is isolated coupling electrode.If coupled capacitor
Body carried charge is q, and potential is V, and experiment proves q ∝ V, i.e. q=CV.C is electric capacity, and unit farad, its expression conductor obtains unit
Potential institute subfam. Spiraeoideae, size is relevant with the geometric properties of conductor (size and shape).
Hypothesis coupling capacitor plates are spherical conductor, and radius is R, and with electricity q, then potential is：
Then electric capacity：
Coupled capacitor body gets and can be exchanged into after electric charge electric energy, and now capacitance body obtains high voltage, weak current.Electricity
The residing electric pressure of volume itself is relevant with the volume of itself and radius, according to engineering experience, the orphan of a matchbox size
Under 10kV electric pressures, in 4kV or so, current value about 10uA or so, power is about 0.04W to voltage to vertical coupling electrode.If
It is 110kV, then about in 60kV or so, electric current is about 10uA to the voltage that capacitance body is obtained, and power is about 0.6W.
Traditional switching tube is pressure to only have 1000V, and most fatal is that power consumption is larger, and static leakage electric power is all in 1mA or so.
Side circuit but cannot be realized with common switching tube, it is necessary to adopt unique circuit design just can be with.
Energy-storage units are one of this utility model technological cores, realize and for high-tension electricity, weak current to be converted to low-voltage, big
Electric current.This utility model completes the effect of switching tube using bidirectional high-pressure diac.When the voltage reserve of electric capacity reaches
After rated voltage, the conducting of high pressure diac.Circuit carries out energy storage, blood pressure lowering by lc circuit to storage capacitor.Realize height
Voltage (220V～3000V), weak current is converted to the DC source of direct current 10V, 200mA or so, so as to reach Switching Power Supply
Effect.
As shown in Fig. 2 in figure：1st, stabilivolt；2nd, filter capacitor；3rd, switching tube；4 inductance, 5 electric capacity composition lc circuit；6、
Storage capacitor (tantalum electric capacity).Wherein, switching tube is formed by the cascade of two-stage high pressure diac, is led by both end voltage difference control
It is logical.
Take the voltage of energy unit, the acquisition of current energy-taking unit by the burning voltage of stabilivolt 1 first, and to filter capacitor 2
Charge.After the both end voltage of filter capacitor 2 reaches rated voltage, switching tube 3 is turned on, subsequently by lc circuit to storage capacitor 6
Carry out energy storage.High voltage (220V～3000V), weak current are converted to into the DC source of direct current 5V, 20mA or so.So as to reach
To the effect of Switching Power Supply.
Energy-storage units scheme of the present utility model possesses advantages below：
● power consumption is extremely low.Number of devices is few, and selects low power dissipation design.The oneself power consumption of device is extremely low.Static Electro
Stream almost 0, maximum is less than 1.4uA.
● reliability is high.Conventional electronics weakest link is Switching Power Supply, because the component number of Switching Power Supply
It is more, and be operated under high current, high voltage, altofrequency situation, it is easiest to break down.This utility model is using simple
Bidirectional high-pressure diac coordinate electric capacity, inductance both to constitute simple Switching Power Supply.Therefore reliability is high.Life-span is to pass
Tens times of system Switching Power Supply；
● extremely low cost.Constitute device less, and be all common components and parts, thus it is with low cost, possess good
Promotional value；
2nd, current energy-taking unit
Current energy-taking unit utilizes conventional current transformer principle, but has two prominent technological cores.Technological core
One be by traditional current transformer do it is very compact, technological core two be iron core should be able to saturation rapidly, and avoid high current
Generate heat under operating mode.
Processing technology unshakable in one's determination avoids that conventional current transformer is bulky, the problem of installation difficulty.This utility model profit
With the ferromagnetic material that composition is nickel-manganese-zinc-ferrum, make length for 20cm, width be 2cm, thickness for 2mm flexible iron core, its
Permeability is 1000 times of traditional silicon steel so that the unit volume is less, be same capacity conventional current transformer volume 1/
100.The material is flexible material, and softness is similar with plastics, in that context it may be convenient to be wrapped on equipment；It is provided simultaneously with good
Magnetic flux characteristic, is 1000 times of traditional silicon steel, it is also possible to be rapidly saturated.Engineering experience proves, the iron core thickness of the utility model
Only 2mm, electric current is rapidly saturated by only needing 12A.
After getting electric current, energy-storage units, the circuit and voltage induced partial common circuit are entered after rectification, all divided
Energy-storage units are not transmitted its energy to.
3rd, energy-storage units, energy storage control unit
Energy storage is that voltage is obtained and current conversion unit sharing unit with energy storage control.
1st, energy-storage units
Electric current obtains electric energy and voltage takes energy unit and electricity is transported to into energy-storage module, and general circuit can consider chargeable
Lithium battery either super capacitor or other electric capacity.If device needs to be operated in 10kV electric pressures, it is proposed that energy-storage module is selected
Tantalum electric capacity.Because the power limited that 10kV electric pressures are obtained, if from rechargeable battery or super capacitor, its Leakage Current is very
Greatly, energy storage time can be caused very long, in addition the restricted lifetime of rechargeable battery, if from rechargeable battery equipment can be affected to use the longevity
Life.It is to reveal very little from first reason of tantalum electric capacity, only 1uA；Second reason is the institute because tantalum electric capacity does not have electrolyte
Very low with fault rate, the life-span is permanent.
2nd, energy storage control unit
The voltage of energy-storage travelling wave tube slowly rises to loaded work piece voltage from " zero " needs a longer time course.Such as
Fruit does not carry out voltage control can cause the hunting of load to work.The voltage for causing energy-storage travelling wave tube fluctuates in standard value, loads nothing
Method normal work.Therefore a control circuit is needed to obtain enough energy to guarantee to load.
Energy storage control unit schematic diagram as shown in figure 3, control circuit control LDO chips (low pressure difference linear voltage regulator),
When voltage reserve is to high value, LDO is opened, allow load to obtain power supply.LDO is closed when storage element energy is not enough.
1) to the description of Fig. 3
● LDO is low-pressure linear manostat.1 pin is voltage input end.Allow 3.3～9V of input voltage range；3 pins
For voltage output end.Output voltage is 3.3V；2 pins are control foot.When input high level, LDO work, works as input low level
When LDO close.
● D1～D3 is silicon diode, and it is 0.3V that D4 is germanium diode pressure drop.
● HT2027 2.7V voltage checking chips.When 1 pin voltage is more than 2.7V, 2 pins output high level 2.7V,
When 1 pin voltage is less than 2.7V, 2 pins output low level.
2) the specific operation principle of the circuit.
VoutBelow loaded work piece voltage is 3.3V.The operating voltage range of Vin is 0～5.6V.If this control electricity
Road, VoutLoad below will be unable to work.The energy at Vin ends is very little, can only provide very faint electric energy.Faint electric energy
It is stored in electric capacity.The voltage that voltage lifting step by step can work to chip, chip is started working corresponding but without completing
Programmed logic, system voltage is collapsed by drawing, the state that as little as chip cannot work.But now voltage is simply slightly lower than cleaning door
Sill voltage, so quickly chip is started working again.But the limited energy of electric capacity storage, and collapsed by drawing.So repeatedly.In order to solve
Thus this problem this circuit produces.Its core purpose is exactly to allow lay in some electric energy electric capacity more.When capacitance voltage is less than one
Energy supply loop is closed when setting value.
Due to there is storage capacitor, input voltage is stepped up at Vin ends, when reaching 4.8V (tri- two poles of HT7027 2.7V+
Pipe PN saves 3*0.7=4.8V).Now the 2 pins output high level LDO start-up operations Vout of HT7027 exports 3.3V.Due to negative
Load causes capacitance voltage to gradually reduce.After less than 4.8V, the control foot high level of LDO cannot be maintained by D1～D3,
D4 diodes are needed to complete Voltage Feedback.Vout pressure drops after D4 are maintained to 3V.2 pins of HT7027 are exported always
High level.LDO continuous firings are less than after 3.3V up to Vin, LDO automatic cut-offs.Now electric capacity starts energy storage.
In this circuit the purpose from voltage control chip is more preferable energy storage, improves tank voltage threshold.For example
3.3V during equipment normal work, voltage chips may require that reach in energy storage and just open after 5.8V LDO chips.When voltage is less than 3.3V
Afterwards, control chip should turn off LDO chips.So increased voltage feedback circuit in circuit.
LDO has played the effect of electric pressure control valve, which obviates energy deficiency and causes equipment oscillatory work.Such as energy storage is firm
Equipment running voltage is just reached, equipment is started working, because energy reserve is not enough, running voltage is pulled low, less than equipment
Normal operational voltage value minimum, causes equipment to quit work.Device starts energy storage again, and energy storage has just reached running voltage, if
It is standby to start working again.Vibration is so caused repeatedly.
This utility model compares with traditional power technology and possesses following advantage：
1. long working life.Most long-acting lithium battery only has 5 years or so service lifes.And this utility model can reach and
The identical service life of primary equipment.Reliable energy supply is provided for related sensor；
2. both energy can be obtained by voltage, also energy can be obtained by electric current.Current transformer takes can cannot tackle electricity
Operating mode without electric current in road, and this utility model can be with the effectively solving problem；
3. high pressure isoelectric level pattern is operated in, and do not insulate hidden danger.On high pressure equipment, insulation and electric field are not destroyed
Distribution.Whole device volume is very compact, can arbitrarily be arranged according to equipment profile.Without high-low pressure contact, it is operated in and waits electric
Bit pattern, therefore the hidden danger that do not insulate.
4. cheap, it is easy to promote.The components and parts that this utility model is related to select ripe device, simply to device
Leakage Current, working life have strict demand.So apparatus cost is cheap, its cost only have laser energy taking device thousand/
One.
Ultimate principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Simply illustrate principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed this utility model.This utility model
Claimed scope is by appending claims and its equivalent thereof.
Claims (6)
1. a kind of self-energizing supply unit for status of electric power detection sensor, it is characterised in that including energy storage control
Unit, voltage take energy unit, current energy-taking unit and take the energy storage that energy unit and current energy-taking unit outfan are connected with voltage
Unit, the energy storage control unit is connected with energy-storage units；
A pole of the energy-storage units including stabilivolt, the filter capacitor for being connected in parallel on the stabilivolt two ends and filter capacitor
Electric capacity that the inductance that the switching tube that plate is connected is in series with the switching tube other end is connected with the inductance other end, it is connected in parallel on electricity
Hold the storage capacitor at two ends, another pole plate of the electric capacity is connected with another pole plate of filter capacitor, the inductance and
Electric capacity constitutes lc circuit；
The energy storage control unit includes low pressure difference linear voltage regulator, voltage checking chip, the first diode D1～D3 and second
Diode D4；The first diode D1～D3 is sequentially connected in series No. 1 pin and voltage detecting core in low pressure difference linear voltage regulator
Between No. 1 pin of piece, No. 2 pins of the low pressure difference linear voltage regulator are connected with No. 2 pins of voltage checking chip, institute
State the second diode D4 to be connected between No. 3 pins of low pressure difference linear voltage regulator and No. 1 pin of voltage checking chip.
2. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In the switching tube is formed by the cascade of two-stage diac.
3. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In the current energy-taking unit includes iron core and the diversion belt being spirally wrapped on iron core.
4. the self-energizing supply unit for status of electric power detection sensor according to claim 3, its feature exists
In the length of the iron core is 20cm, and width is 2cm, and thickness is 2mm.
5. the self-energizing supply unit for status of electric power detection sensor according to claim 3, its feature exists
In the width of the diversion belt is 4mm, and thickness is 3mm；Winding is at intervals of 2mm.
6. the self-energizing supply unit for status of electric power detection sensor according to claim 1, its feature exists
In the first diode D1～D3 specifically uses silicon diode, and the second diode D4 specifically uses germanium two
Pole pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153399.8U CN206135553U (en) | 2016-10-31 | 2016-10-31 | A from draw -out power supply device for power equipment condition detects sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153399.8U CN206135553U (en) | 2016-10-31 | 2016-10-31 | A from draw -out power supply device for power equipment condition detects sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135553U true CN206135553U (en) | 2017-04-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733063A (en) * | 2017-11-01 | 2018-02-23 | 吉林建筑大学 | A kind of miniature buck voltage-stabilizing power supply system |
| CN109494886A (en) * | 2018-12-28 | 2019-03-19 | 国网山西省电力公司晋中供电公司 | A kind of wireless energy supply system based on electric field induction flat plate array |
| CN110957790A (en) * | 2019-12-25 | 2020-04-03 | 四川瑞霆电力科技有限公司 | Weak light type energy management system, management method and weak light type passive wireless sensor |
| CN112816753A (en) * | 2020-08-07 | 2021-05-18 | 苏州市清易传感电力电子有限公司 | Novel self-energy-taking voltage sensor |
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2016
- 2016-10-31 CN CN201621153399.8U patent/CN206135553U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733063A (en) * | 2017-11-01 | 2018-02-23 | 吉林建筑大学 | A kind of miniature buck voltage-stabilizing power supply system |
| CN109494886A (en) * | 2018-12-28 | 2019-03-19 | 国网山西省电力公司晋中供电公司 | A kind of wireless energy supply system based on electric field induction flat plate array |
| CN110957790A (en) * | 2019-12-25 | 2020-04-03 | 四川瑞霆电力科技有限公司 | Weak light type energy management system, management method and weak light type passive wireless sensor |
| CN112816753A (en) * | 2020-08-07 | 2021-05-18 | 苏州市清易传感电力电子有限公司 | Novel self-energy-taking voltage sensor |
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