CN109004640A - A kind of self-power supply system and working method - Google Patents
A kind of self-power supply system and working method Download PDFInfo
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- CN109004640A CN109004640A CN201810791945.8A CN201810791945A CN109004640A CN 109004640 A CN109004640 A CN 109004640A CN 201810791945 A CN201810791945 A CN 201810791945A CN 109004640 A CN109004640 A CN 109004640A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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Abstract
The invention discloses a kind of self-power supply systems and system working method, are related to field of energy management.The self-power supply system includes energy collection module and energy management module, and energy collection module is connected by energy management module with load equipment, to provide work capacity to load equipment；The energy collection module is for collecting environmental energy and exporting after environmental energy is converted to electric energy；The energy management module is used to receive the electric energy of energy collection module output, and according to the configuration of system and the demand of energy consumptions at different levels, exports regulated power to power consuming circuits at different levels；The load equipment includes the dissipative cell that at least one of sensor, processor, communication module or communication equipment are used to complete respective circuit function.Scheme provided by the invention is able to achieve energy and automatically supplies completely, does not need external reserve battery；The judgement that can be intelligently switched, and the duty cycle of adaptive adjusting load, while having the characteristics that super low-power consumption.
Description
Technical field
The present invention relates to field of energy management, the electric system and system working method of especially a kind of complete self energizing.
Background technique
Self energizing technology is quickly grown in recent years, and a variety of different self energizing technologies exist in the prior art can be by environment
Energy, such as kinetic energy, luminous energy, electromagnetic radiation, temperature change (temperature difference), human motion energy, vibration source etc., are converted to electric energy.
Self energizing technology is widely used in energy constraint and requires in the design of circuit system of long-life, such as the confession of microsensor
Electricity.There can be the characteristic of low energy densities for most of environment, it is also necessary to cooperate the dedicated energy pipe for collection of energy
Reason method provides stable power-supplying for Rapid Accumulation electricity.In document [1], a kind of DC-DC liter for having positive and negative feedback is designed
Voltage conversion circuit, to generate periodic voltage control system periodicity charge and discharge；[2-3] utilizes AC-DC boost converter or lifting
Pressure converter, the low-voltage of amplified energy collecting device；[4] cycle switch movement is generated using mechanical switch, is realized
Periodical charge and discharge；[5-6] designs the piezoelectric energy management circuit of the complete self energizing based on transformer, which utilizes change
The energy that depressor amplification is collected.Above in the prior art, boosting or buck converter [1-3] require the additional source DC, because
This needs to be embedded in backup battery power supply, all difficult although mechanical switch [4] and transformer [5] do not need additional power supply power supply
To control volume.And method in the prior art does not consider the work requirements of load, loads the power consumption being always kept in a fixed state
State, this is also very important waste for the self-power supply system strictly by energy limit.
[1]X.Cao,W.-J.Chiang,Y.-C.King,and Y.-K.Lee,“Electromagnetic energy
harvesting circuit with feedforward and feedback DC–DC PWM boost converter
for vibration power generator system,”IEEE Trans.Power Electron.,vol.22,no.2,
pp.679–685,Mar.2007.pp.158–166,Dec.2012.
[2]R.Dayal and L.Persa,“Low-power low-voltage AC-DC converters for
electromagnetic energy harvesting with efficient indirect feedback scheme,”
IET Power Electron.,vol.5,no.9,pp.1923–1933,Nov.2012.
[3]T.Guo,R.Kerley,and D.S.Ha,“Development of a power conditioning
circuit for railcar energy harvesting,”in Proc.IEEE Int.Midwest Symp.Circuits
Syst.,Aug.2013,pp.513–516.
[4]US20060021261A1
[5]R.Amirtharajah and A.P.Chandrakasan,“Self-powered signal
processing using vibration-based power generation,”IEEE J.Solid-State
Circuits,vol.33,no.5,pp.687–695,May 1998.
[6]A.Rahimi,Zorlu,A.glu,and H.Külah,“An electromagnetic
energy harvesting system for low frequency applications with a passive
interface ASIC in standard CMOS,”Sens.Actuators A,Phys.,vol.188,
Summary of the invention
Goal of the invention of the invention is: being directed to above-mentioned problems of the prior art, provides a kind of self energizing
System and working method complete switch off the power supply of load during loading no task quickly to collect storage environment energy；When
When thering is task to need to be implemented (timed task or sensed environmental change), quickly powers to the load and complete task, complete
It powers at switching off load is continued after task.It is directed to the adaptive energy management method of collection of energy and energy consumption in this way, it can be with
Realization quicklys increase the requirement of fuel deposition rate in the case where system smaller size smaller and very low cost, and as far as possible will
Amount, which is used in, to be realized in loading functional task, and the efficiency of energy utilization is improved.
The technical solution adopted by the invention is as follows:
A kind of self-power supply system, which is characterized in that the self-power supply system includes energy collection module and energy management mould
Block, energy collection module are connected by energy management module with load equipment, to provide work capacity to load equipment；
The energy collection module is for collecting environmental energy and exporting after environmental energy is converted to electric energy；The energy
Management module is used to receive the electric energy of energy collection module output, and according to the configuration of system and the demand of energy consumptions at different levels, to each
Grade power consuming circuit exports regulated power；The load equipment include in sensor, processor, communication module or communication equipment extremely
Few one for completing the dissipative cell of respective circuit function.
Further, the environmental energy includes but is not limited to human motion energy, temperature difference, solar energy, wind energy, radiation
Deng.
Further, energy management module is made of energy supply unit and power control unit；
The energy supply unit is used for other grade of circuit with stable electric energy, and maximizes the effect for improving collection of energy
Rate；
The power control unit is used for event and system program process according to the energy, triggering that are collected into, controls energy
The output voltage level for measuring the connection and dynamic regulation energy supply unit between supply unit and load equipment, maximizes and improves
Energy utilization efficiency.
Further, the energy supply unit includes rectification circuit, booster circuit, storage circuit, voltage regulator circuit, described
Rectification circuit is used to the alternating voltage of electricity energy harvester acquisition conversion being converted to direct current energy, and the booster circuit will rectify
Electric energy afterwards is boosted or is converted to the processing of specific voltage, and the storage circuit is used to store the electric energy of acquisition,
When the electric energy of storage reaches a certain level, it can be used to the power supply of load equipment or do not need consumption electricity in load equipment
The electric energy of continuous collecting is subjected to storage in case subsequent use, the voltage regulator circuit connect the defeated of energy-storage travelling wave tube in the state of energy
Out, to produce and export continual and steady operating voltage；
Further, the power control unit includes control circuit and energy detection circuit, event detection circuit, program
Process detection circuit, the energy detection circuit are described for detecting the stored energy size of energy-storage travelling wave tube in storage circuit
Generation of the event detection circuit for a certain trigger event in detection circuit, described program process detection circuit are used for detection circuit
In each program process beginning and end, each program process power consumption level, the control circuit according to be collected into energy, touch
Hair event and system program process control connecting or disconnecting between energy supply unit and load equipment and energy supply list
The output voltage values of member.
A kind of working method of self-power supply system, the working method of the self-power supply system the following steps are included:
S1, system initialization, self-power supply system is in electricity spent condition under init state, at power control unit
The connection between load equipment and energy management module is disconnected in power-down state and by control circuit；
S2, energy collection module are started to work, and extraneous environmental energy are acquired, the environmental energy non-electrical after acquisition
Signal is after conversion as power output to energy management module；
S3, after energy management module receives the electric energy of energy collecting device transmission, energy supply unit is by received electricity
It can be handled through the one or more in over commutation, boosting, storage, pressure stabilizing, to generate stable, lasting power output；
S4, the power control unit receive the electric energy of energy supply unit output, which is energy hole list
The circuits at different levels power supply of member, power control unit then according to the energy size, the event of triggering and the system program that are collected into
Journey controls the connection between energy supply unit and load equipment or the output voltage level of on-off and energy supply unit, from
And it maximizes and improves energy utilization efficiency.
Further, the processing step in the step 3 specifically:
S3.1 need to be converted to direct current energy for the alternating voltage of the outputs such as piezoelectricity energy by rectification circuit；For solar energy
Or the DC voltage of thermal gradient energy output, then it directly inputs；
DC voltage is transformed into specific voltage by DC-DC circuit, and charged to energy-storage travelling wave tube by S3.2, energy-storage travelling wave tube
Electric energy is stored；
Energy-storage travelling wave tube is connected voltage regulator circuit by S3.3, to produce and export continual and steady voltage.
8, a kind of working method of self-power supply system as claimed in claim 6, which is characterized in that the step S4 is specific
Include:
S4.1, the energy detection circuit in energy supply unit into power control unit start to power and provide input letter
Number, energy detection circuit starts power up work；When energy detection circuit detects that the voltage on energy-storage travelling wave tube is greater than certain threshold value
When VH, control first order switch connection, event/program process detection circuit of power control unit receives energy supply unit
The electric energy of offer and start-up operation；When energy detection circuit detects that tank voltage is less than certain threshold value VL, first order switch
It disconnects, event/program process detection circuit of power control unit enters power down dormant state；
S4.2 detects a certain event hair when the event detection circuit of power control unit is during powering on normal work
When raw, control second level switch is connected, and power control unit is defeated to load equipment by control circuit control energy supply unit
Voltage needed for pressure stabilizing works out, each load equipment start power up work, and the electric energy in corresponding energy-storage travelling wave tube, which starts consumption, to be reduced；
S4.3, during load equipment works on power, when load equipment detects electricity to the program process of power control unit
When the input voltage regulation signal of road, power control unit controls the pressure stabilizing output valve of energy supply unit by control circuit, and
According to program process come dynamic regulation output voltage, load power consumption is reduced；
The threshold value VH is more than or equal to VL, and the value of VH and VL is determined by the workload loaded.
Described program process detection circuit is for the beginning and end of each program process in detection circuit, each program process
Power consumption level, when the work event of load equipment increases and/or program process quantity increases, then power control unit receives program
The increase regulated voltage signal of process detection circuit input, and exported by the pressure stabilizing of control circuit energization supply unit
Value；Conversely, then power control unit receives program when the work event reduction of load equipment and/or program process quantity are reduced
The reduction regulated voltage signal of process detection circuit input, and exported by the pressure stabilizing that control circuit reduces energy supply unit
Value.
It further include step S4.4, generation of the event detection circuit for a certain trigger event in detection circuit, when negative
At the end of the work event for carrying equipment, power control unit receives the end trigger signal of event detection circuit input, and passes through
Control circuit disconnects the connection between the pressure stabilizing output of energy supply unit and load, and energy-storage travelling wave tube continues to charge, energy hole
Unit waits trigger event next time.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, self energizing scheme provided by the invention includes the operation method of self-power supply system and control management self-power supply system,
Energy is able to achieve to automatically supply completely, the energy in scheme is obtained by energy gathering devices completely, external reserve battery is not needed yet,
It is applicable in all kinds of self energizing circuit systems and suitable for self energizing or is inconvenient to replace the environment for obtaining the external energy；
In the case that 2, even self energizing scheme energy gathering devices provided by the invention collect finite energy every time, energy
Amount management module can to greatest extent save energy, improve the efficiency of collection of energy and conversion；
3, the judgement that self energizing scheme provided by the invention can be switched intelligently, according to event, energy, program intelligence
The power or power-down of the control load of energy, and the duty cycle that adaptive adjusting loads, extend system duty cycle；
4, self energizing scheme provided by the invention has the characteristics that super low-power consumption, can control its duty cycle based on this system
Property power on and off, and power down period load power consumption be preferably minimized, improve the utilization efficiency of system capacity.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is self-power supply system schematic diagram.
Fig. 2 is the operation method flow chart of self-power supply system.
Fig. 3 is another operation method embodiment of self-power supply system.
Specific embodiment
It is right below with reference to attached drawing of the invention in order to make those skilled in the art more fully understand technical solution of the present invention
Technical solution of the present invention carries out clear, complete description, and based on the embodiment in the application, those of ordinary skill in the art exist
Other similar embodiments obtained under the premise of creative work are not made, shall fall within the protection scope of the present application.
Embodiment 1
As shown in Figure 1, embodiment 1 is a kind of self-power supply system, which includes energy collection module
(EnergyHarvestingModule, EHD) and energy management module (PowerManagementModule, PMM), and energy
Amount collection module is connected by energy management module with load equipment, to provide work capacity to load equipment.
The energy collection module (EnergyHarvestingModule, EHD) is for collecting environmental energy and by environment
Energy exports after being converted to electric energy, the environmental energy include but is not limited to human motion energy, temperature difference, solar energy, wind energy,
Radiation etc..In one embodiment, after the pressure that energy collecting device generates all kinds of mechanical actions is collected as non-electrical signal
It is exported after being converted to electric energy, corresponding energy collection module is piezoelectric energy collecting device.
Since the environmental energy has the characteristics that energy value is smaller, energy density is low, endless Total continuity and may stablize,
Therefore corresponding energy collection module needs to consider to improve the efficiency of collection of energy as far as possible and environmental energy turns to electric energy
Change efficiency.
The energy management module (PowerManagementModule, PMM) is used to receive energy collection module output
Electric energy, and according to the configuration of system and the demand of energy consumptions at different levels, regulated power is exported to power consuming circuits at different levels.Further, energy
Measure management module by energy supply unit (PowerSupplyUnit, PSU) and power control unit (PowerControlUnit,
PCU it) forms.
The energy supply unit PSU for realizing functions such as rectification, boosting, storage, pressure stabilizings, with minimum cost to its
His grade circuit with stable electric energy, and maximize the efficiency for improving collection of energy.
The power control unit PCU is used for event and system program process according to the energy, triggering that are collected into, control
The output voltage level of connection and energy supply unit PSU between energy supply unit PSU and load equipment, thus maximum
Change and improves energy utilization efficiency.
Described load (Load) equipment includes that sensor, processor, communication module or communication equipment etc. are corresponding for completing
The dissipative cell of circuit function.
In one embodiment, energy supply unit PSU includes rectification circuit, booster circuit, storage circuit, pressure stabilizing electricity
Road.The rectification circuit is used to being converted to the alternating voltage of electricity energy harvester acquisition conversion into direct current energy, the boosting electricity
Electric energy after rectification is boosted or is converted on road the processing of specific voltage；The storage circuit be used for the electric energy that will acquire into
Row storage, when the electric energy of storage reaches a certain level, can be used to the power supply of load equipment, or do not need in load equipment
The electric energy of continuous collecting is subjected to storage in case subsequent use in the state of consumption electric energy；The storage electricity in one embodiment
The energy-storage travelling wave tube on road is capacitive storage circuit or rechargeable battery storage circuit.The voltage regulator circuit connects the defeated of energy-storage travelling wave tube
Out, to produce and export continual and steady operating voltage, such as the voltage of voltage regulation of 3.3V.
In one embodiment, power control unit PCU includes control circuit and energy detection circuit, event detection electricity
Road, program process detection circuit.The energy detection circuit is big for detecting the stored energy of energy-storage travelling wave tube in storage circuit
It is small；Outside generation of the event detection circuit for a certain trigger event in detection circuit, such as level or pulse signal, representative
The interrupt signal of portion's event or timing signal etc.；Described program process detection circuit is for each program process in detection circuit
Start the power consumption level with end, each program process.The control circuit is according to energy, trigger event and the system journey being collected into
Sequence process controls connecting or disconnecting between energy supply unit PSU and load equipment and the output of energy supply unit PSU
Voltage value.
By control circuit and energy detection circuit, event detection circuit, program process detection circuit cooperating, energy
Amount control unit PCU can dynamically control the company of the operating voltage or load equipment and energy supply circuit that are supplied to each load equipment
It connects and on-off, to improve the use duration and utilization efficiency of acquisition electric energy.
Embodiment 2
Such as Fig. 2, the present embodiment is a kind of working method of self-power supply system, and the self-power supply system is but not limited to aforementioned
Any self-power supply system, the working method of the self-power supply system the following steps are included:
S1, system initialization, entire self-power supply system is in electricity spent condition under init state, and system is without outer
What, which is taken over, can directly provide the element of electricity, and power control unit PCU is in power-down state and is set load by control circuit
The standby connection between energy management module disconnects；
S2, energy collection module are started to work, and extraneous environmental energy are acquired, the environmental energy non-electrical after acquisition
Signal is after conversion as power output to energy management module；
S3, after energy management module receives the electric energy of energy collecting device transmission, energy supply unit PSU will be received
Electric energy is handled through the one or more in over commutation, boosting, storage, pressure stabilizing, to generate stable, lasting power output；
Electric energy in the step 3 does one or more processing steps specifically:
S3.1 need to be converted to direct current energy for the alternating voltage of the outputs such as piezoelectricity energy by rectification circuit；For solar energy
Or the DC voltage of thermal gradient energy output, then it directly inputs；
DC voltage is transformed into specific voltage by DC-DC circuit, and charged to energy-storage travelling wave tube by S3.2, energy-storage travelling wave tube
Electric energy is stored；Energy-storage travelling wave tube is including but not limited to capacitor, rechargeable battery etc.；
Energy-storage travelling wave tube is connected voltage regulator circuit by S3.3, to produce and export continual and steady voltage, such as 3.3V's is steady
Piezoelectricity pressure.
S4, the power control unit PCU receive the electric energy of energy supply unit PSU output, which is energy
The circuits at different levels of control unit PCU are powered, and power control unit PCU is then according to energy size, the event of triggering being collected into
With system program process, connection or on-off and energy supply unit between control energy supply unit PSU and load equipment
The output voltage level of PSU, to maximize raising energy utilization efficiency.
It should be noted that powered first from energy-storage travelling wave tube to energy detection circuit in one embodiment, energy at this time
Control unit PCU starts to work, and then voltage regulator circuit is powered to trigger event detection circuit and system program process detection circuit；
In another embodiment, the electric energy in energy-storage travelling wave tube is powered to energy detection circuit again after first passing through voltage regulator circuit, at this time can
It measures control unit PCU to start to work, then voltage regulator circuit continues to trigger event detection circuit and system program process detection electricity
Road power supply.The selection of power supply module and the sequence of powered operation are having no effect on the functions such as the control of power control unit PCU just
Often operation and work.
Further, in one embodiment as shown in figure 3, the step S4 is specifically included:
Energy detection circuit power supply of the energy-storage travelling wave tube into power control unit PCU in S4.1, energy supply unit PSU
And input signal is provided, energy detection circuit starts power up work；When energy detection circuit detects the voltage on energy-storage travelling wave tube
When greater than certain threshold value VH (i.e. collecting energy reaching a certain level), control first order switch is connected, in power control unit PCU
The event in portion/program process detection circuit receives the electric energy of energy supply unit PSU offer and start-up operation；Work as energy measuring
When circuit detects that tank voltage is less than certain threshold value VL (i.e. collecting energy consumption reaches a certain level), first order switch is disconnected
It opens, the event inside power control unit PCU/program process detection circuit enters power down dormant state.
Wherein threshold value VH is more than or equal to VL, and its occurrence is determined by the workload loaded.
S4.2, event/program process detection circuit inside power control unit PCU during powering on normal work,
Event detection circuit detect a certain event occur when issue beginning trigger signal (level or pulse signal, represents outside thing
The interrupt signal or timing signal of part), control second level switch connection, power control unit PCU is controlled by control circuit
Voltage needed for energy supply unit PSU works to load equipment output pressure stabilizing, each load equipment starts power up work, corresponding to store up
Electric energy in energy element, which starts consumption, to be reduced；
It includes but is not limited to that each element starts the works such as to be sensed, detect, communicate that the load equipment, which starts power up work,
Make；
It should be noted that energy detection circuit is constantly in working condition at this time, as the power control unit PCU of system
Multiple energy detection circuits are in parallel state, and storage energy in any time system when comprising multiple energy detection circuits
Deficiency can all cause first order switch to disconnect.
S4.3, during working on power when load equipment, when load equipment is to the program process inside power control unit PCU
When detection circuit input voltage regulation signal, power control unit PCU controls the steady of energy supply unit PSU by control circuit
Output valve is pressed, and load power consumption is reduced come dynamic regulation output voltage according to program process；
S4.4, at the end of the progress of work of load equipment, power control unit PCU is received according to event detection circuit
End trigger signal exports the connection between load by the pressure stabilizing that control circuit disconnects energy supply unit PSU, stores up at this time
Energy element continues to charge, and power control unit waits trigger event next time.
Described program process detection circuit is for the beginning and end of each program process in detection circuit, each program process
Power consumption level, when the program process quantity of load equipment increases, then power control unit receives the input of program process detection circuit
Increase regulated voltage signal, and pass through the pressure stabilizing output valve of control circuit energization supply unit；Conversely, working as load equipment
Program process quantity reduce, then power control unit receive program process detection circuit input reduction regulated voltage signal,
And the pressure stabilizing output valve of energy supply unit is reduced by control circuit.
Such as when sensor is worked, including acquisition senses data, sensing data is sent to processor, processor
Processing sensing data and etc., when processor receives and read sensing data, due to the limitation of the transmission speed of sensor
Cause processor reading speed slow, the frequency and voltage of processor can be reduced at this time, and issues reduction regulated voltage signal, phase
The power control unit PCU answered reduces the pressure stabilizing output valve that energy supply unit PSU is supplied to processor by control element, from
And save energy electric energy；And when processor handles sensing data, it needs quickly to handle, therefore promote processor operating voltage,
Corresponding power control unit PCU improves the pressure stabilizing output valve that energy supply unit PSU is supplied to processor by control element,
With the working efficiency of lifting system.
On the other hand, when load equipment is believed to the event detection circuit input EP (end of program) inside power control unit PCU
Number when, corresponding second level switch disconnects, and power control unit PCU is steady by control element disconnection energy supply unit PSU's
Pressure output and the connection between load, energy-storage travelling wave tube continues to charge at this time, and power control unit PCU waiting triggers thing next time
Part.
It should be noted that would generally include multiple load equipments or load circuit in a circuit system, therefore right
That answers has at least one second level to switch, corresponding for the progress of work state according to each load equipment or load circuit
Load equipment is attached or is disconnected with energy supply unit PSU.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.This specification (including any accessory claim, abstract)
Disclosed in any feature can be replaced by other alternative features that are equivalent or have similar purpose unless specifically stated.
That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (10)
1. a kind of self-power supply system, which is characterized in that the self-power supply system includes energy collection module and energy management module,
Energy collection module is connected by energy management module with load equipment, to provide work capacity to load equipment；
The energy collection module is for collecting environmental energy and exporting after environmental energy is converted to electric energy；The energy management
Module is used to receive the electric energy of energy collection module output, and according to the configuration of system and the demand of energy consumptions at different levels, to consumptions at different levels
Electric circuit output regulated power；The load equipment includes at least one in sensor, processor, communication module or communication equipment
A dissipative cell for being used to complete respective circuit function.
2. a kind of self-power supply system as described in claim 1, which is characterized in that the environmental energy includes but is not limited to human body
Kinergety, temperature difference, solar energy, wind energy, radiation etc..
3. a kind of self-power supply system as described in claim 1, which is characterized in that energy management module by energy supply unit and
Power control unit composition；
The energy supply unit is used for other grade of circuit with stable electric energy, and maximizes the efficiency for improving collection of energy；
The power control unit is used for event and system program process according to the energy, triggering that are collected into, and control energy supplies
The output voltage level for answering the connection and dynamic regulation energy supply unit between unit and load equipment, maximizes and improves energy
Utilization efficiency.
4. a kind of self-power supply system as described in claim 1, which is characterized in that the energy supply unit includes rectified current
Road, booster circuit, storage circuit, voltage regulator circuit, the rectification circuit are used for the alternating current of electricity energy harvester acquisition conversion
Pressure is converted to direct current energy, and the electric energy after rectification is boosted or be converted to the processing of specific voltage, institute by the booster circuit
Storage circuit is stated for storing the electric energy of acquisition, when the electric energy of storage reaches a certain level, load is can be used to and sets
Standby power supply or the electric energy of continuous collecting is subjected to storage in case subsequent in the state that load equipment does not need consumption electric energy
It uses, the output of the voltage regulator circuit connection energy-storage travelling wave tube, to produce and export continual and steady operating voltage.
5. a kind of self-power supply system as described in claim 1, which is characterized in that the power control unit includes control circuit
With energy detection circuit, event detection circuit, program process detection circuit, the energy detection circuit is for detecting storage circuit
The middle stored energy size of energy-storage travelling wave tube, generation of the event detection circuit for a certain trigger event in detection circuit,
Described program process detection circuit is for the beginning and end of each program process in detection circuit, the power consumption water of each program process
Flat, the control circuit controls energy supply unit and load according to energy, trigger event and the system program process being collected into
Equipment room connect or disconnect and the output voltage values of energy supply unit.
6. a kind of working method of self-power supply system, which is characterized in that the working method of the self-power supply system the following steps are included:
S1, system initialization, self-power supply system is in electricity spent condition under init state, and power control unit is in
Electricity condition is simultaneously disconnected the connection between load equipment and energy management module by control circuit；
S2, energy collection module are started to work, and extraneous environmental energy are acquired, the environmental energy non-electrical signal after acquisition
As power output to energy management module after conversion；
S3, after energy management module receives the electric energy of energy collecting device transmission, energy supply unit passes through received electric energy
Over commutation, boosting, storage, one or more processing in pressure stabilizing, to generate stable, lasting power output；
S4, the power control unit receive the electric energy of energy supply unit output, which is power control unit
Circuit power supplies at different levels, power control unit is then according to energy size, the event of triggering and the system program process being collected into, control
The output voltage level of connection or on-off and energy supply unit between energy supply unit and load equipment processed, thus most
Bigization improves energy utilization efficiency.
7. a kind of working method of self-power supply system as claimed in claim 6, which is characterized in that the processing in the step 3
Step specifically:
S3.1 need to be converted to direct current energy for the alternating voltage of the outputs such as piezoelectricity energy by rectification circuit；For solar energy or temperature
The DC voltage that difference can export, then directly input；
DC voltage is transformed into specific voltage by DC-DC circuit, and charged to energy-storage travelling wave tube by S3.2, and energy-storage travelling wave tube will be electric
It can be carried out storage；
Energy-storage travelling wave tube is connected voltage regulator circuit by S3.3, to produce and export continual and steady voltage.
8. a kind of working method of self-power supply system as claimed in claim 6, which is characterized in that the step S4 is specifically wrapped
It includes:
S4.1, the energy detection circuit in energy supply unit into power control unit start input signal of powering and provide,
Energy detection circuit starts power up work；When energy detection circuit detects that the voltage on energy-storage travelling wave tube is greater than certain threshold value VH
When, control first order switch connection, event/program process detection circuit of power control unit receives energy supply unit and mentions
The electric energy of confession and start-up operation；When energy detection circuit detects that tank voltage is less than certain threshold value VL, first order switch is disconnected
It opens, event/program process detection circuit of power control unit enters power down dormant state；
S4.2, when the event detection circuit of power control unit is during powering on normal work, detects that a certain event occurs,
Second level switch connection is controlled, power control unit controls energy supply unit by control circuit and exports pressure stabilizing to load equipment
Voltage needed for working, each load equipment start power up work, and the electric energy in corresponding energy-storage travelling wave tube, which starts consumption, to be reduced；
S4.3, during load equipment works on power, when the program process detection circuit of load equipment to power control unit is defeated
When entering regulated voltage signal, power control unit by control circuit control energy supply unit pressure stabilizing output valve, and according to
Program process carrys out dynamic regulation output voltage, reduces load power consumption；
The threshold value VH is more than or equal to VL, and the value of VH and VL is determined by the workload loaded.
9. a kind of working method of self-power supply system as claimed in claim 8, which is characterized in that described program process detection electricity
Road is for the beginning and end of each program process in detection circuit, the power consumption level of each program process, when the program of load equipment
Number of processes increases, then power control unit receives the increase regulated voltage signal of program process detection circuit input, and passes through
The pressure stabilizing output valve of control circuit energization supply unit；Conversely, the program process quantity when load equipment is reduced, then energy
Control unit receives the reduction regulated voltage signal of program process detection circuit input, and reduces energy supply by control circuit
The pressure stabilizing output valve of unit.
10. a kind of working method of self-power supply system as claimed in claim 8, which is characterized in that further include step S4.4, institute
State generation of the event detection circuit for a certain trigger event in detection circuit, at the end of the program process of load equipment, energy
The end trigger signal that amount control unit is inputted according to event detection circuit, and energy supply unit is disconnected by control circuit
Connection between pressure stabilizing output and load, energy-storage travelling wave tube continue to charge, and power control unit waits trigger event next time.
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