CN105672095A - Piezoelectric film type pavement snow-melting and deicing device - Google Patents
Piezoelectric film type pavement snow-melting and deicing device Download PDFInfo
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- CN105672095A CN105672095A CN201610190677.5A CN201610190677A CN105672095A CN 105672095 A CN105672095 A CN 105672095A CN 201610190677 A CN201610190677 A CN 201610190677A CN 105672095 A CN105672095 A CN 105672095A
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- 238000002844 melting Methods 0.000 title claims abstract description 30
- 230000008018 melting Effects 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 18
- 239000004917 carbon fiber Substances 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 18
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- 239000010408 film Substances 0.000 claims description 57
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- VMWYVTOHEQQZHQ-UHFFFAOYSA-N methylidynenickel Chemical compound [Ni]#[C] VMWYVTOHEQQZHQ-UHFFFAOYSA-N 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000005413 snowmelt Substances 0.000 description 2
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- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
- E01C11/265—Embedded electrical heating elements ; Mounting thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/181—Circuits; Control arrangements or methods
Abstract
The invention relates to a piezoelectric film type pavement snow-melting and deicing device, comprising a piezoelectric film pile of which the output end is connected with an energy accumulator through a wire, and the output end of the energy accumulator is connected with a carbon fiber heating cloth through a wire. Electric power is generated by periodic mechanical compression and expansion generated by rolling of vehicles running on a pavement on the piezoelectric film pile, the electric power is supplied for the carbon fiber heating cloth through energy conversion, energy is radiated in a heat radiation mode onto the pavement for melting snow and deicing, therefore, the snow-melting and deicing functions can be achieved without an external power source, energy saving and environment protection are realized, and the piezoelectric film type pavement snow-melting and deicing device can be tiled in a section with easy ice formation or a section for turning and other accident prone special sections, or remote sections incomplete in power supply facilities without affecting normal running of vehicles.
Description
Technical field
The invention belongs to bridge floor deicing or snow melting technical field, particularly relate to a kind of piezoelectric film type snow-ice melting system device.
Background technology
Communications and transportation is the Aorta of national economy, but pavement of road snowfall ice formation issues, become one of difficult problem that road worker needs emphasis to solve, and the bridge overwhelming majority is erected between rivers and valley, even build between over strait, therefore solving such bridge floor snow melt and changing ice is then the most important thing, otherwise can cause the traffic accident of car crash, the safety of the also entail dangers to bridge self of working together.
At present, the method major mechanical of deicing is removed method and is melted method. Mechanical process is suitable for big area mechanize and removes operation, but often need to complete after snow, hinders traffic in operation; Difficulty is thoroughly removed after freezing in road surface; It is relatively big by seasonal effect that ice and snow roots out machinery, and utilization ratio is low. The method of melting comprises chemical ablation method and heating ablation method.
Chemical ablation method mainly relies on chemistry melting agent, although this method is generally applied, but chemical ablation needs the later stage to clear up, environmental pollution is serious, often cause serious water resource pollution, chemical reagent is to reinforcing bar, road surface, row fortune instrument seriously corroded simultaneously, it is necessary to enormous expenditure repairing road and bridge, financial loss is huge. At present, chemical ablation method has been forbidden in many countries and regions. Heating ablation method makes ice dissolution mainly through the mode of heating cables, but this needs powerful electric power resource to do backing. Conducting concrete heating ablation occur again now, this kind of method is the conductive component material by adding suitable kind and proper content in portland cement concrete, makes cement concrete become the electrical conductor with excellent conductive performance. Conducting concrete is divided into three classes substantially, mineral-type (such as electroconductive cement concrete and water glass conducting concrete), organic class (such as pitch conducting concrete and resin conductive concrete) and complex class (such as conducting polymer concrete and dipping conducting concrete). No matter which class all needs to mix with cement according to a certain percentage, once road surface needs maintenance, a large amount of conducting concretes is then destroyed, just need to again prepare this kind of concrete, cause cost increase. Need complicated pipeline is installed simultaneously, and provide conducting concrete heating to reach the object of deicing or snow melting by renewable energy sources such as such as energy, sun power, but these all face working conditions and the restriction in area, and complex process, less economical, constrain the development of conducting concrete.
Patent 2013201857408 discloses the method on the deicing or snow melting road surface of a kind of piezoelectric self electricity, it multiple piezoelectric ceramic piece is stacked into transverter hide in conducting concrete, and the method exists road surface equally and damages all technical problems such as piezoelectric ceramic piece because of maintenance. The problem such as technique, economy constrains the application of this technology equally.
Summary of the invention
In order to overcome the technical disadvantages that above-mentioned deicing or snow melting exists, the present invention provides a kind of effciency of energy transfer height, deicing or snow melting is effective and structure is light, the piezoelectric film type snow-ice melting system device of easy disassembly.
The technical solution adopted in the present invention comprises piezoelectricity film stack, the output terminal of piezoelectricity film stack is connected with stored energy device by wire, the output terminal of stored energy device is connected with carbon fiber heating cloth by wire, utilize the vehicle travelled on road surface to roll on piezoelectricity film stack produce period mechanical compression and uphold and generate electricity, through energy transformation, carbon fiber heating cloth is powered, in thermal radiation mode to pavement radiation energy, deicing or snow melting.
The outer setting of above-mentioned piezoelectricity film stack has rubber protective sleeve, and the thickness of rubber protective sleeve is 0.5～1.5mm.
Above-mentioned piezoelectricity film stack forms by least 6 layers of piezoelectric thin film layer are folded, and the thickness of every layer of piezoelectricity film is 0.07～0.09mm.
Above-mentioned piezoelectricity film stack forms by 6～8 layers of piezoelectric thin film layer are folded, and piezoelectricity film adopts monocrystalline PMN-PT/ ring oxygen 1-3 type matrix material to make, efficiency of conversion height, it may also be useful to the life-span is long.
Above-mentioned stored energy device connects and composes by voltage doubling rectifying circuit and LTC3588-1 piezoelectric energy collection power supply, pull-up resistor R, electric power storage electric capacity of voltage regulation C10, wherein:
The output terminal of above-mentioned voltage doubling rectifying circuit is connected with the input terminus of pin PZ2 and pull-up resistor R that LTC3588-1 piezoelectric energy collects power supply, the pin PZ1 that the output terminal of pull-up resistor collects power supply with LTC3588-1 piezoelectric energy is connected, and the output terminal that electric power storage electric capacity of voltage regulation and LTC3588-1 piezoelectric energy collect power supply is connected in parallel.
Above-mentioned voltage doubling rectifying circuit is 2～6 times of voltage doubling rectifying circuits amplified.
The resistance of above-mentioned pull-up resistor R is 100～130k Ω, and the electrical capacity of electric power storage electric capacity of voltage regulation C10 is 30～60 μ F.
The piezoelectric film type snow-ice melting system device of the present invention utilizes the vehicle travelled on road surface to roll on piezoelectricity film stack produce period mechanical compression and uphold and generate electricity, through energy transformation, carbon fiber heating cloth is powered, in thermal radiation mode to pavement radiation energy, deicing or snow melting. Compared with prior art, the invention has the beneficial effects as follows:
(1) utilize the period mechanical compression of piezoelectricity film stack and uphold and generate electricity, carbon fiber heating cloth is powered, in thermal radiation mode to pavement radiation energy, deicing or snow melting, mechanical energy is converted to electric energy, it is not necessary to external source can complete the function of deicing or snow melting, energy-conserving and environment-protective.
(2) the piezoelectricity film thickness of the present invention is little, weight light, long service life, adopts monocrystalline PMN-PT/ ring oxygen 1-3 type matrix material to make, and its energy density reclaimed is up to 22.1mW/cm2The multiple special road section of the accident such as easily freeze or turn round or the incomplete remote section of power supply facilities can be laid in, not affecting normal vehicle operation, in addition, the snappiness of the carbon fiber heating cloth of the present invention is good, intensity is four times of ordinary steel and proportion only about equals the 1/4 of steel, not easily damage, convenient disassembly, for not freezing or can accept snowy season, lay according to actual user demand, it may also be useful to flexible, easy accessibility.
(3) low frequency that piezoelectricity film is first produced by the present invention by the voltage doubling rectifying circuit of n times, weak ac signal utilizes the piezoelectric type energy scavenging source chip of LTC3588-1 after amplifying, it is integrated with low loss full wave bridge rectifier and efficient voltage reducing type transmodulator, thus realize high-level efficiency conversion, ensure that output voltage is stablized, in addition it adopts high-energy nickel carbon supercapacitor C11, use temperature scope is from subzero 40 degrees Celsius to zero 70 degrees Celsius, very low temperature characteristic is good, and this super capacitor specific surface area strengthens, can discharge and recharge many times, and do not generate heat, structurally achieve the also interior of battery and traditional capacitance, the advantage achieving battery and electric capacity has both, compared with storage battery, cost is low, discharge and recharge number of times is many, it is affected by the external environment little, be suitable for outdoor electric power storage to use.
(4) the carbon fiber heating cloth of the present invention outside quantity of radiant energy in the way of thermal radiation, carbon fiber heating cloth amount of electromagnetic radiation is minimum, after carrying out electromagnetic wave shielding than metal resistive heater also little, harmless, thermal conversion efficiency height, in heat transfer process, calorific loss is few, and snow melt is effective, the carbon fiber heating cloth life-span is long, is suitable for applying on a large scale.
Accompanying drawing explanation
Fig. 1 is the apparatus structure block diagram of embodiment 1.
Fig. 2 is the schematic circuit of stored energy device 2 in Fig. 1.
Embodiment
Now in conjunction with the accompanying drawings and embodiments the technical scheme of the present invention is further described, but does not invent and be not limited only to following enforcement situation.
Embodiment 1
As shown in Figure 1, the piezoelectric film type snow-ice melting system device of the present embodiment is made up of piezoelectricity film stack 1, stored energy device 2, carbon fiber heating cloth 3 and rubber protective sleeve.
The present embodiment designs two pieces of piezoelectricity film stack 1 arranged side by side and combines external power supply, every block piezoelectricity film stack 1 is 1.8m by 6 layers of length, width is 40cm, thickness is the folded formation of piezoelectric thin film layer of 0.09mm, the piezoelectricity film of the present embodiment adopts monocrystalline PMN-PT/ ring oxygen 1-3 type matrix material to make, change can act on to reach, outer setting at piezoelectricity film stack 1 has insulation rubber protective sleeve, piezoelectricity film is played a protective role, the thickness of this rubber protective sleeve is 1.0mm, piezoelectricity film stack 1 is just, negative potential extends to outside rubber protective sleeve, and be connected with stored energy device 2.
The stored energy device 2 of the present embodiment connects and composes by voltage doubling rectifying circuit 2-1 and LTC3588-1 piezoelectric energy collection power supply 2-2, pull-up resistor R, electric power storage electric capacity of voltage regulation C10, see Fig. 2, the voltage doubling rectifying circuit 2-1 of the present embodiment is connected in series according to the principle that polarity is added by electric capacity C1～C6 and rectification diode D1～D6 to be formed, and the high-voltage, the alternating-current of low current that are produced by piezoelectricity film stack 1 amplify 6 times after voltage doubling rectifying circuit 2-1. The voltage output end of this voltage doubling rectifying circuit 2-1 is collected power supply 2-2 with LTC3588-1 piezoelectric energy and is connected.
The LTC3588-1 piezoelectric energy of the present embodiment is collected power supply 2-2 and is adopted Linear company product, belong to common circuit, its PZ2 pin is directly connected with the voltage output end of voltage doubling rectifying circuit 2-1, PZ1 pin is connected with the voltage output end of voltage doubling rectifying circuit 2-1 by pull-up resistor R, namely the two ends of PZ1 pin and PZ2 pin pull-up resistor R in parallel plays shunting action, prevent the excessive defective chip of electric current, the electric capacity C11 that LTC3588-1 piezoelectric energy collects power supply 2-2 adopts high-energy nickel carbon supercapacitor, achieve common ultracapacitor and battery is combined as a whole, thus have the excellent properties of general ultracapacitor and store battery concurrently. use temperature scope is from subzero 40 degrees Celsius to zero 70 degrees Celsius, and very low temperature characteristic is good, extends the work-ing life of power supply. the output collecting power supply 2-2 at LTC3588-1 piezoelectric energy stores on end and is connected in parallel to an electric power storage electric capacity of voltage regulation C10, for maintaining stable voltage output effect, prevents that load is excessive causes damage to circuit.
It is 16V that electric capacity C1, C2, C3, C4, C5, C6 of the present embodiment all adopts, 470 μFElectrical condenser, D1, D2, D3, D4, D5, D6 all select the diode of 1N4004, and pull-up resistor R is 120k Ω, and electric power storage electric capacity of voltage regulation C10 selects 60 μF。
The output storage end that above-mentioned LTC3588-1 piezoelectric energy collects power supply 2-2 is connected with carbon fiber heating cloth 3, is powered by carbon fiber heating cloth 3.The length of the carbon fiber heating cloth 3 of the present embodiment be 2m, wide be 0.8m, its heating produces infrared radiation so that it is outside quantity of radiant energy in the way of thermal radiation.
Piezoelectric film type its principle of work of snow-ice melting system device of the present invention is: when wheel rolls rubber protective sleeve, the piezoelectricity film stack 1 being encapsulated in rubber protective sleeve is produced vibration, mechanically compress and extension is there is in piezoelectricity film stack 1 when being subject to applied external force, its mechanical energy is converted to electric energy, the form of electric energy is high-voltage, the alternating-current of low current, voltage amplification n is doubly after voltage doubling rectifying circuit 2-1 for piezoelectricity film stack 1, voltage output end after amplification and pin PZ1, PZ2 is connected, the full wave bridge rectifier commutating DC voltage of the alternating-current produced through LTC3588-1 inside exports, and the electric capacity C7 storing end to its input charges, in order to prevent the excessive defective chip of electric current, at pin PZ1, a PZ2 two ends resistance R in parallel, play shunting action, charging initial period, the voltage at the electric capacity C7 two ends that the input of LTC3588-1 stores end is less, UVLO in LTC3588-1 chip is in closing condition, therefore the electric energy in electric capacity C7 can not send rear class to and keep charging state, C8, C9 two electric capacity are when DC/DC transmodulator carries out opening with off condition conversion, play the effect keeping common rail voltage stable, when the magnitude of voltage at C7 the two poles of the earth reaches the upper limit of UVLO, UVLO opens, C7 is as the input terminus of DC/DC rectifier, inner integrated DC/DC rectifier starts, and after the hypotensive effect of the integrated sluggish voltage-dropping type DC/DC transmodulator of high-level efficiency, export volts DS, and charge to the electric capacity C11 exporting storage end, when the voltage in C7 electric capacity drops to the lower limit of UVLO, UVLO enters locking state again, the connected loop of DC/DC transmodulator and front stage circuits is disconnected, input stores end electric capacity C7 and starts to enter again independent charging state so that reach the upper limit threshold of UVLO, this process iterative cycles is until the electric capacity C11 exporting storage end is full of, for carbon fiber heating cloth 3 is powered, make carbon fiber heating cloth 3 with thermal radiation mode outwards heat penetrate energy, it is scattered on it when there being snowflake can melt at once, the water melted can volatilize and turn into steam and can also flow away, the car crash traffic accident that road surface causes vehicle movement to occur because freezing can not be caused, also ensure the safety of bridge simultaneously.
Embodiment 2
The piezoelectricity film stack 1 of the present embodiment is, and to be that the piezoelectric thin film layer of 0.08mm is folded by 7 layer thicknesses formed; reach and change and can act on; the piezoelectricity film of the present embodiment adopts monocrystalline PMN-PT/ ring oxygen 1-3 type matrix material to make; outer setting at piezoelectricity film stack 1 has insulation rubber protective sleeve; piezoelectricity film is played a protective role; the thickness of this rubber protective sleeve is 1.5mm, and the positive and negative electrode of piezoelectricity film stack 1 extends to outside rubber protective sleeve, and is connected with stored energy device 2.
The stored energy device 2 of the present embodiment connects and composes by voltage doubling rectifying circuit 2-1 and LTC3588-1 piezoelectric energy collection power supply 2-2, pull-up resistor R, electric power storage electric capacity of voltage regulation C10, the voltage doubling rectifying circuit 2-1 of the present embodiment is connected in series according to the principle that polarity is added by electric capacity C1～C3 and rectification diode D1～D3 to be formed, and the high-voltage, the alternating-current of low current that are produced by piezoelectricity film stack 1 amplify 3 times after voltage doubling rectifying circuit 2-1. The voltage output end of this voltage doubling rectifying circuit 2-1 is collected power supply 2-2 with LTC3588-1 piezoelectric energy and is connected.
The LTC3588-1 piezoelectric energy of the present embodiment is collected power supply 2-2 and is adopted Linear company product, belong to common circuit, its PZ2 pin is directly connected with the voltage output end of voltage doubling rectifying circuit 2-1, PZ1 pin is connected with the voltage output end of voltage doubling rectifying circuit 2-1 by pull-up resistor R, namely the two ends of PZ1 pin and PZ2 pin pull-up resistor R in parallel plays shunting action, prevents the excessive defective chip of electric current. The output collecting power supply 2-2 at LTC3588-1 piezoelectric energy stores on end and is connected in parallel to an electric power storage electric capacity of voltage regulation C10, for maintaining stable voltage output effect, prevents that load is excessive causes damage to circuit. It is 16V that electric capacity C1, C2, C3 of the present embodiment all adopts, 470 μFElectrical condenser, D1, D2, D3 all select the diode of 1N4004, and pull-up resistor R is 100k Ω, and the electrical capacity of electric power storage electric capacity of voltage regulation is 30 μ F.
Other parts are all identical with embodiment 1.
Embodiment 3
The piezoelectricity film stack 1 of the present embodiment is, and to be that the piezoelectric thin film layer of 0.07mm is folded by 8 layer thicknesses formed, and reaches and changes and can act on, and the piezoelectricity film employing monocrystalline PMN-PT/ ring oxygen 1-3 type matrix material of the present embodiment is made. Outer setting at piezoelectricity film stack 1 has insulation rubber protective sleeve, is played a protective role by piezoelectricity film, and the thickness of this rubber protective sleeve is 0.5mm, and the positive and negative electrode of piezoelectricity film stack 1 extends to outside rubber protective sleeve, and is connected with stored energy device 2.
The stored energy device 2 of the present embodiment collects power supply 2-2, pull-up resistor R by voltage doubling rectifying circuit 2-1 and LTC3588-1 piezoelectric energy to connect and compose, the voltage doubling rectifying circuit 2-1 of the present embodiment is connected in series according to the principle that polarity is added by electric capacity C1～C4 and rectification diode D1～D4 to be formed, and the high-voltage, the alternating-current of low current that are produced by piezoelectricity film stack 1 amplify 4 times after voltage doubling rectifying circuit 2-1. The voltage output end of this voltage doubling rectifying circuit 2-1 is collected power supply 2-2 with LTC3588-1 piezoelectric energy and is connected.
The LTC3588-1 piezoelectric energy of the present embodiment is collected power supply 2-2 and is adopted Linear company product, belong to common circuit, its PZ2 pin is directly connected with the voltage output end of voltage doubling rectifying circuit 2-1, PZ1 pin is connected with the voltage output end of voltage doubling rectifying circuit 2-1 by pull-up resistor R, namely the two ends of PZ1 pin and PZ2 pin pull-up resistor R in parallel plays shunting action, prevents the excessive defective chip of electric current.
It is 16V that electric capacity C1, C2, C3, C4 of the present embodiment all adopts, 470 μFElectrical condenser, D1, D2, D3, D4 all select the diode of 1N4004, and pull-up resistor R is 130k Ω.
Other parts are all identical with embodiment 1.
In above-described embodiment, the electrical capacity of electric power storage electric capacity of voltage regulation C10 can according to practical application adjustment between 30～60 μ F, and the output voltage size that electric capacity used, resistance and LTC3588-1 piezoelectric energy collect power supply 2-2 all can adjust according to the size of actual piezoelectricity film.
Claims (7)
1. a piezoelectric film type snow-ice melting system device, it is characterized in that comprising piezoelectricity film stack (1), the output terminal of piezoelectricity film stack (1) is connected with stored energy device (2) by wire, the output terminal of stored energy device (2) is connected with carbon fiber heating cloth (3) by wire, utilize the vehicle travelled on road surface to roll on piezoelectricity film stack (1) produce period mechanical compression and uphold and generate electricity, through energy transformation, carbon fiber heating cloth (3) is powered, in thermal radiation mode to pavement radiation energy, deicing or snow melting.
2. piezoelectric film type snow-ice melting system device according to claim 1, it is characterised in that the outer setting of described piezoelectricity film stack (1) has rubber protective sleeve, and the thickness of rubber protective sleeve is 0.5～1.5mm.
3. piezoelectric film type snow-ice melting system device according to claim 1, it is characterised in that described piezoelectricity film stack (1) forms by least 6 layers of piezoelectric thin film layer are folded, and the thickness of every layer of piezoelectricity film is 0.07～0.09mm.
4. piezoelectric film type snow-ice melting system device according to claim 3, it is characterised in that described piezoelectricity film stack (1) forms by 6～8 layers of piezoelectric thin film layer are folded, and piezoelectricity film adopts monocrystalline PMN-PT/ ring oxygen 1-3 type matrix material to make.
5. piezoelectric film type snow-ice melting system device according to the arbitrary item of Claims 1 to 4, it is characterized in that described stored energy device (2) connects and composes by voltage doubling rectifying circuit (2-1) and LTC3588-1 piezoelectric energy collection power supply (2-2), pull-up resistor R, electric power storage electric capacity of voltage regulation C10, wherein:
The input terminus of pin PZ2 and pull-up resistor that the output terminal of described voltage doubling rectifying circuit (2-1) collects power supply (2-2) with LTC3588-1 piezoelectric energy is connected, the pin PZ1 that the output terminal of pull-up resistor collects power supply (2-2) with LTC3588-1 piezoelectric energy is connected, and the output terminal that electric power storage electric capacity of voltage regulation and LTC3588-1 piezoelectric energy collect power supply (2-2) is connected in parallel.
6. piezoelectric film type snow-ice melting system device according to claim 5, it is characterised in that described voltage doubling rectifying circuit (2-1) is 2～6 times of voltage doubling rectifying circuit 2-1 amplified.
7. piezoelectric film type snow-ice melting system device according to claim 5, it is characterised in that the resistance of described pull-up resistor R is 100～130k Ω, the electrical capacity of electric power storage electric capacity of voltage regulation C10 is 30～60 μ F.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610190677.5A CN105672095A (en) | 2016-03-30 | 2016-03-30 | Piezoelectric film type pavement snow-melting and deicing device |
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| CN201610190677.5A CN105672095A (en) | 2016-03-30 | 2016-03-30 | Piezoelectric film type pavement snow-melting and deicing device |
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| CN105672095A true CN105672095A (en) | 2016-06-15 |
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| CN201610190677.5A Pending CN105672095A (en) | 2016-03-30 | 2016-03-30 | Piezoelectric film type pavement snow-melting and deicing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113916364A (en) * | 2021-10-11 | 2022-01-11 | 陕西师范大学 | Experimental device for mechanical vibration test that precision is high |
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