CN105091941B - Amplify the temperature and humidity pressure real-time monitoring device of energy supply based on many piezoelectricity combined powers - Google Patents
Amplify the temperature and humidity pressure real-time monitoring device of energy supply based on many piezoelectricity combined powers Download PDFInfo
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- CN105091941B CN105091941B CN201510498216.XA CN201510498216A CN105091941B CN 105091941 B CN105091941 B CN 105091941B CN 201510498216 A CN201510498216 A CN 201510498216A CN 105091941 B CN105091941 B CN 105091941B
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Abstract
The invention discloses a kind of temperature and humidity pressure real-time monitoring device for amplifying energy supply based on many piezoelectricity combined powers, it includes piezoelectric cantilever array, power conditioning unit, energy storage units, measurement and wireless transmission unit and control unit, the energy output end connection power conditioning unit of the piezoelectric cantilever array, power conditioning unit connects energy storage units, energy storage units connection measurement and wireless transmission unit and control unit, control unit connect power conditioning unit, measurement and wireless transmission unit respectively；The energy that piezoelectric cantilever array is produced delivers to energy storage units storage after being converted via power conditioning unit, when the energy that energy storage units are stored reaches threshold value, be just power conditioning unit, measure and wireless transmission unit and control unit energy supply.The present invention is as a result of the energy acquisition module being made up of piezoelectric cantilever array, with self energizing ability, its application and is intended for single use the time and is significantly extended, and can mitigate the dependence to battery.
Description
Technical field
The present invention relates to a kind of temperature and humidity pressure monitoring device, more particularly to a kind of temperature and humidity pressure based on environmental energy acquisition technique
Real-time monitoring device.
Background technology
Temperature and humidity pressure monitoring in real time has important in terms of industrial stokehold, storage transport, vegetable cultivation, center monitoring
Applying value.Real-time and accurate temperature and humidity pressure data are to instructing industrial and agricultural production, and improving the quality of life of people has important meaning
Justice.In the instrument and equipments of numerous monitoring temperature and humidity pressure data, warm and humid pressure sensor is because its precision is high, response is fast, long lifespan, can
Reproducible the advantages of and the favor for enjoying people.Generally, warm and humid pressure sensor is originated using battery as energy.However,
During large-scale application, because its node is more, distribution wide, deployed environment is complicated, change battery becomes very difficult sometimes, from
And limit the use of warm and humid pressure sensor.There are various form of energy in nature, for example luminous energy, vibrational energy,
Electromagnetic energy etc..In outdoor opening, the power density that solar energy can be provided is about 15000μW/cm 3, and machinery shakes
The dynamic power density that can be provided is about 300μW/cm 3, if it is possible to they are collected, it is possible to reduce to battery
Rely on, it might even be possible to the use of substituting battery, this just considerably increases the application of sensor, enable the sensor to for a long time
Worked under more severe and complex environment.
The content of the invention
Present invention seek to address that merely using battery-powered temperature and humidity pressure monitoring device application it is partially narrow the problem of there is provided
A kind of temperature and humidity pressure real-time monitoring device for amplifying energy supply based on many piezoelectricity combined powers, employs what is be made up of piezoelectric cantilever array
Energy acquisition module so that its application and be intended for single use the time and can significantly be extended.
To reach above-mentioned purpose, the temperature and humidity pressure of the present invention for amplifying energy supply based on many piezoelectricity combined powers is monitored in real time
Device includes：Piezoelectric cantilever array, power conditioning unit, energy storage units, measurement and wireless transmission unit and control are single
Member, the energy output end connection power conditioning unit of the piezoelectric cantilever array, power conditioning unit connection energy storage units,
Energy storage units connection measurement and wireless transmission unit and control unit, control unit connect respectively power conditioning unit,
Measurement and wireless transmission unit；The energy that the piezoelectric cantilever array is produced is delivered to energy after being converted via power conditioning unit and deposited
Storage unit is stored, and when the energy that energy storage units are stored reaches threshold value, is just power conditioning unit, is measured and transmit wirelessly
Unit and control unit energy supply, described control unit control each several part co-ordination, and control to measure and transmit wirelessly unit
Measurement, transmission measurement data.
The piezoelectric cantilever array includes pedestal, multiple piezoelectric cantilevers, and the piezoelectric cantilever includes metallic plate, piezoelectricity
Piece, piezoelectric patches adheres to metallic plate both sides by conducting resinl, and is connected by wired in series, draws respectively from metallic plate and piezoelectric patches
Go out electrode；The pedestal includes an annular structural part or multiple annular structural parts are laminated, and passes through connection between annular structural part
Bar is fixed；Multiple detents are uniformly distributed on annular structural part, piezoelectric cantilever one end is fixed on inside detent, another
End is hanging；The piezoelectric cantilever of i.e. same layer is connected by wired in series on same annular structural part, then again will
Piezoelectric cantilever between layers is connected by conductor in parallel.
The power conditioning unit, energy storage units, measurement and wireless transmission unit and control unit where electricity
Road plate is fixed on pedestal by connecting rod.
Specifically, the circuit board is circle, it is laminated and places with annular structural part.
To enable cantilever array to respond broader frequency range, the length of the piezoelectric cantilever of the same layer is general
Difference is uniform up and down to float centered on the optimization length calculated.
The power conditioning unit includes nonlinear block and AC-DC rectification modules, and the nonlinear block includes series connection
Inductance and analog switch, analog switch is controlled to turn on and disconnected by single-chip microcomputer, so as to increase the damping action time of piezoelectric patches,
And then the output energy of piezoelectric patches is significantly increased.
The energy storage units include DC-DC modular converters and super capacitor, and DC-DC modular converters turn input voltage
It is changed to rated voltage and is conveyed to super capacitor storage.
The measurement and wireless transmission unit include the Temperature Humidity Sensor and pressure sensing being connected with wireless sending module
Device；The Temperature Humidity Sensor, pressure sensor and the controlled unit control of wireless sending module, according to user's request, interval
Time sends temperature and humidity pressure data.Described control unit can use single-chip microcomputer.
The present apparatus can also be equipped with solar panel simultaneously, and the energy that solar panel is produced is also fed to energy simultaneously
Memory cell.
It is of the invention compared with existing temperature and humidity pressure data monitoring device, the advantage is that：The present invention is as a result of by pressing
The energy acquisition module that electric cantilever array is constituted, with self energizing ability, its application and is intended for single use the time and can obtain
Significantly extend；Importantly, the harmful substance that the present invention can mitigate in the dependence to battery, reduction battery is discharged into ring
Probability in border, is typical environmentally friendly technology.
Brief description of the drawings
Fig. 1 is the circuit structure block diagram of the present invention.
Fig. 2 is the structure chart of piezoelectric cantilever.
Fig. 3 is pedestal and circuit board mounting structure figure.
Fig. 4 is power conditioning unit circuit theory diagrams.
Fig. 5 is voltage doubling rectifing circuit schematic diagram.
Fig. 6 is circuit structure block diagram of the present invention using piezoelectric cantilever array and solar energy duplicate supply.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the temperature and humidity pressure real-time monitoring device of the present invention includes piezoelectric cantilever array, power conditioning unit, energy
Measure memory cell, measurement（Collection）With wireless transmission unit and control unit composition.The energy output of the piezoelectric cantilever array
End connection power conditioning unit, power conditioning unit connection energy storage units, energy storage units connection measurement and wireless hair
Unit and control unit are sent, control unit connects power conditioning unit, measurement and wireless transmission unit respectively.The piezoelectricity hangs
The energy that arm array is produced delivers to energy storage units storage after being converted via power conditioning unit, device can be also equipped with too simultaneously
Positive energy cell panel（Depending on situations such as application environment, sensor power consumption）, as shown in fig. 6, the energy that solar panel is produced
It is also fed to energy storage units simultaneously；When the energy that energy storage units are stored reaches threshold value, be just power conditioning unit,
Measurement and wireless transmission unit and control unit energy supply, described control unit control each several part co-ordination, and control measurement
With the measurement of wireless transmission unit, transmission measurement data.
Piezoelectric cantilever array is made up of pedestal and some piezoelectric cantilevers.Pedestal is the non-conductive materials such as plastics, and structure is
Annulate lamella stacked configuration, is one layer or multilayer according to practical service environment, every layer is uniformly distributed multiple cantilever beam detents,
Groove size will match with piezoelectric cantilever size.
Fig. 2 show the structure chart of a piezoelectric cantilever in piezoelectric cantilever array, including：Piezoelectric patches 101, metallic plate 102,
Connecting wire 103.Piezoelectric patches 101 adheres to metallic plate by conducting resinl, and about 102 both sides, and are connected by connecting wire 103
Connection, respectively from extraction electrode on metallic plate 102 and piezoelectric patches 101.To ensure that piezoelectric cantilever can reach most in the environment
Big Oscillation Amplitude, metallic plate 102 is using the elasticity such as beryllium copper preferably material.It is reasonable according to the level of vibration of local environment
The length of adjustment metallic plate 102 is optimal so that collection efficiency is maximum.In order that piezoelectric cantilever array is in broader frequency bar
The length that the piezoelectric cantilever in higher energy output, one layer of loop configuration can be reached under part be usually it is different, can
So that the piezoelectric cantilever beam length positioned at pedestal same layer is fluctuated centered on optimization length, even variation.For example at certain
Plant under application scenario, the optimization length for testing and calculating piezoelectric cantilever is 2cm, if there are 7 cantilever beams in one layer, then this
What the length of a little cantilever beams may be arranged such that：1.4cm, 1.6cm, 1.8cm, 2cm, 2.2cm, 2.4cm, 2.6cm.
The piezoelectric cantilever array includes pedestal, multiple piezoelectric cantilevers.Fig. 3 show the pedestal of piezoelectric cantilever array,
Including：Annular structural part 104, detent 105 and connecting rod 106.Pedestal can include one or more annular structural parts 104
Stacking, it is illustrated that be to be connected between the situation of 2 annular structural parts 104, annular structural part 104 by connecting rod 106.Annular
Multiple detents 105 are uniformly distributed on structural member 104, piezoelectric cantilever one end is fixed on inside detent 105, the other end
Vacantly；Piezoelectric cantilever on same annular structural part 104 i.e. same layer is connected by wired in series, then again will
Piezoelectric cantilever between layers is connected by conductor in parallel.
According to needed for actual conditions, annular structural part 104 can be one or more.According to annular structural part 104
Detent 105 on the length of size and piezoelectric cantilever, annular structural part 104 can have multiple, and in annular structural part
It is uniformly distributed on 104.Fig. 3 also includes the power conditioning unit, energy storage units, measurement and wireless transmission unit and control
Circuit board 107 where unit processed, circuit board 107 is circular configuration, in the middle of pedestal annular structural part 104.Circuit board 107
It is fixed on by connecting rod 106 on pedestal.According to needed for actual conditions, circuit board 107 is also possible to be located at by one or more rings
The optional position for the pedestal that shape structural member 104 is constituted, and connected by connecting rod 106.When only one of which annular structural part 104,
Directly circuit board 107 and annular structural part 104 are connected with connecting rod 106.
Power conditioning unit is made up of nonlinear block and AC-DC rectification modules.Nonlinear block is vibrated using LC, increase
The piezoelectric patches damping action time, so as to increase the output level of piezoelectric cantilever array.AC-DC rectification modules utilize the list of diode
The AC signal produced by cantilever array is converted into the direct current signal that suitable electronic equipment is used on state characteristic.Fig. 4 institutes
Show, power conditioning unit includes nonlinear block 201 and AC-DC rectification modules 202.AC-DC rectification modules 202 are by four Xiao Te
Based diode constitutes bridge rectifier, and this has fully ensured that the voltage drop of the part can reach minimum.But in some feelings
Under condition, to ensure that there is sufficiently large voltage rear end, AC-DC rectification modules 202 can use two Schottky diodes and two electricity
Hold composition voltage doubling rectifing circuit, as shown in Figure 5.Nonlinear block 201 is SSHI structure types, by inductance and analog switch
TS5A3154 is composed in series.Single-chip microcomputer controls analog switch, can be appropriate for a period of time in the conducting of proper time point, so that
Increase the damping action time of piezoelectric patches 101, and then the output of piezoelectric patches 101 is significantly increased.
Energy storage units are made up of DC-DC modular converters and ultracapacitor.DC-DC modular converters are used for front end work(
High voltage that rate conditioning unit is produced, the form of energy of low current are converted to 3.3V voltages, and improve in transfer process electric current
So that rear end energy storage module quick storage.The specification of super capacitor is 1F, 3.3V, and sets outside it overvoltage protection electricity
Road, is punctured with preventing voltage excessive.The big voltage conversion that DC-DC modular converters input leading portion is 3.3V, for super electricity
Appearance is used.
Measurement and wireless transmission unit are made up of Temperature Humidity Sensor, pressure sensor and wireless sending module.Sensor
For monitoring the temperature and humidity pressure data of local environment of the present invention, and transmitting wirelessly unit is used for the above-mentioned Monitoring Data of remote transmission.Temperature
Humidity sensor is model AM2302, and pressure sensor model is BMP085, and they can receive instruction, then exports temperature
Humidity data and pressure data, and sent by wireless sending module.
Control module is mainly made up of super low power consuming single chip processor MSP430 and its peripheral circuit.Control unit can control work(
Rate conditioning unit, energy storage units, measurement and wireless transmission unit co-ordination.Control unit can control measurement and wireless
Transmitting element works with interval time or in " burst " mode.Single-chip microcomputer configure under low-power consumption mode, when not working at
In holding state.By the configuration to single-chip microcomputer, a temperature and humidity pressure data can be sent out with interval time, or make monolithic
Machine directly works in " burst " pattern, and so-called " burst " pattern just refers to set a threshold value, when the data that sensor is measured surpass
When crossing the threshold value, just data and warning message are sent to outside.
The work capacity of device can be collected from the application environment of the present invention, according to the vibration water of local environment
Flat, the length that can adjust piezoelectric cantilever is optimal so that piezoelectric cantilever array can reach maximum in local environment
Collection level.To enable cantilever array to respond broader frequency range, the length with each cantilever beam of layer is with above-mentioned optimal length
Based on degree, upward even variation downwards.
Claims (3)
1. amplify the temperature and humidity pressure real-time monitoring device of energy supply based on many piezoelectricity combined powers, it is characterized in that, including：Piezoelectric cantilever battle array
Row, power conditioning unit, energy storage units, measurement and wireless transmission unit and control unit, the piezoelectric cantilever array
Energy output end connection power conditioning unit, power conditioning unit connection energy storage units, energy storage units connection survey
Amount and wireless transmission unit and control unit, control unit connect power conditioning unit, measurement and wireless transmission unit respectively；
The energy that the piezoelectric cantilever array is produced delivers to energy storage units storage after being converted via power conditioning unit, when energy is deposited
The energy that storage unit is stored reaches threshold value, is just power conditioning unit, measures and wireless transmission unit and control unit confession
Can, described control unit control each several part co-ordination, and control to measure and transmit wirelessly unit measurement, send measurement data；
The piezoelectric cantilever array includes pedestal, multiple piezoelectric cantilevers, and the piezoelectric cantilever includes metallic plate（102）, pressure
Electric piece（101）, piezoelectric patches（101）Metallic plate is adhered to by conducting resinl（102）Both sides, and being connected by wired in series, respectively from
Metallic plate（102）And piezoelectric patches（101）Upper extraction electrode；The pedestal includes an annular structural part（104）Or multiple annulars
Structural member（104）Stacking, annular structural part（104）Between pass through connecting rod（106）It is fixed；Annular structural part（104）It is upper uniform
It is distributed multiple detents（105）, piezoelectric cantilever one end is fixed on detent（105）Inside, the other end is hanging；It is arranged on
Same annular structural part（104）The piezoelectric cantilever of upper i.e. same layer is connected by wired in series, then again by layer and layer it
Between piezoelectric cantilever connected by conductor in parallel；
The length of the piezoelectric cantilever of the same layer is different, centered on the optimization length calculated, uniform up and down to float；
The power conditioning unit, energy storage units, measurement and wireless transmission unit and control unit where circuit board
（107）Pass through connecting rod（106）It is fixed on pedestal；
The circuit board（107）For circle, with annular structural part（104）Stacking is placed；
The power conditioning unit includes nonlinear block（201）With AC-DC rectification modules（202）, the nonlinear block
（201）Inductance and analog switch including series connection, analog switch are controlled to turn on and disconnected by single-chip microcomputer, so as to increase piezoelectric patches
（101）The damping action time, and then piezoelectric patches is significantly increased（101）Output energy；
The energy storage units include DC-DC modular converters and super capacitor, and DC-DC modular converters are converted input voltage into
Rated voltage is conveyed to super capacitor storage；
The measurement and wireless transmission unit include the Temperature Humidity Sensor and pressure sensor being connected with wireless sending module；Institute
Temperature Humidity Sensor, pressure sensor and the controlled unit control of wireless sending module are stated, according to user's request, interval time hair
Temperature and humidity pressure data, or one threshold value of setting are sent, when the data that sensor is measured exceed the threshold value, just data are sent to outside
And warning message.
2. the temperature and humidity pressure real-time monitoring device as claimed in claim 1 for amplifying energy supply based on many piezoelectricity combined powers, its feature
It is that described control unit uses single-chip microcomputer.
3. the temperature and humidity pressure real-time monitoring device as claimed in claim 1 for amplifying energy supply based on many piezoelectricity combined powers, its feature
It is that the energy storage units are also associated with solar panel.
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| WO2009063610A1 (en) * | 2007-11-13 | 2009-05-22 | Kohei Hayamizu | Power generation unit |
| CN101319924A (en) * | 2008-06-30 | 2008-12-10 | 西安交通大学 | Imbedded wireless stress/strain/temperature sensor test platform |
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