CN103134553B - A kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method - Google Patents
A kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method Download PDFInfo
- Publication number
- CN103134553B CN103134553B CN201310038961.7A CN201310038961A CN103134553B CN 103134553 B CN103134553 B CN 103134553B CN 201310038961 A CN201310038961 A CN 201310038961A CN 103134553 B CN103134553 B CN 103134553B
- Authority
- CN
- China
- Prior art keywords
- spacing
- piezo strip
- speed
- automobile
- piezoelectric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000005611 electricity Effects 0.000 title claims abstract description 35
- 230000008569 process Effects 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 238000012544 monitoring process Methods 0.000 claims abstract description 22
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 19
- 230000003321 amplification Effects 0.000 claims abstract description 18
- 230000010365 information processing Effects 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000000919 ceramic Substances 0.000 claims description 14
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method, its system comprises the speed of a motor vehicle and spacing intellectual monitoring unit and piezoelectric self electric unit, the speed of a motor vehicle and spacing intellectual monitoring unit comprise lateral separation and arrange and be laid on front piezo strip under pavement of road and rear piezo strip, and intelligent controller, intelligent controller is made up of the amplification circuit module connected successively, filter circuit module, hysteresis comparator circuit module and microprocessor module, and the output terminal of microprocessor module is connected to digital display warning sign; Piezoelectric self electric unit comprises multiple piezoelectric transducer, current rectifying and wave filtering circuit and accumulator; Its method comprises step: one, piezoelectric self electricity and the storage of electric energy and supply, and two, signal Real-time Collection and process, three, speed information process and display, four, spacing information processing and display.The present invention is novel in design rationally, not only environmental protection but also economic, can guarantee vehicle safety, travel rapidly, reduce the generation of traffic hazard, be convenient to promote the use of.
Description
Technical field
The invention belongs to technical field of intelligent traffic, especially relate to a kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method.
Background technology
At present, the spacing pick-up unit that road traffic uses mostly is detector, by forward, rear car emitting electromagnetic wave or ultrasonic signal analyze the spacing identifying fore-aft vehicle, because detector mostly is car-mounted device, somewhat expensive, and the electromagnetic wave launched or ultrasound wave are vulnerable to interference and normally cannot calculate spacing.
Moreover vehicle mostly is drives over the speed limit and generation rear-end collision out of control, present Speed Limitation on Freeway many employings warning sign, to be easy to ignore by driver, alarming effect is poor, and strengthening speed limit control is further still one of Important Action of transport solution accident.
Most spacing and vehicle speed detector are all adopt external power supply now, require higher to service condition, promote the use more difficult in remote districts, the employing solar panel also had is as energy source, but comparatively strong to weather dependence, overcast and rainy equipment just cannot normally work.Can traffic load is used for vehicle own services, this be a public focus of energy-conserving and environment-protective and Portable safety, particularly has the traffic control intelligent system of automatic prompting function, is also the topic that we will need to pay close attention to from now on.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of rationally novel in design, it is convenient to realize, intelligence degree is high, not only environmental protection but also economic, vehicle safety can be guaranteed, travel rapidly, reduce the speed of a motor vehicle and the spacing intelligent monitor system of the piezoelectric self electricity of the generation of traffic hazard.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system, it is characterized in that: the piezoelectric self electric unit comprising the speed of a motor vehicle and spacing intellectual monitoring unit and power for the speed of a motor vehicle and spacing intellectual monitoring unit, the described speed of a motor vehicle and spacing intellectual monitoring unit comprise lateral separation arrange be laid on pavement of road under and for the front piezo strip that traffic load is converted into electric signal and rear piezo strip, and carry out for the electric signal exported front piezo strip and rear piezo strip the intelligent controller that analyzing and processing draws the spacing between front car and rear car, described front piezo strip by multiple be arranged in band shape before pressure transducer form, described rear piezo strip is made up of multiple rear pressure transducer being arranged in band shape, described intelligent controller is by the amplification circuit module connected successively, filter circuit module, hysteresis comparator circuit module and microprocessor module are formed, the output terminal of described microprocessor module is connected to and is arranged on road side and digital display warning sign for showing the speed of a motor vehicle and spacing, multiple described front pressure transducer and multiple described rear pressure transducer all connect with described amplification circuit module, multiple piezoelectric transducers under described piezoelectric self electric unit comprises the pavement of road being laid on wheel trajectories band place, road both sides and for the mechanical vibration produced in vehicle traveling process being converted to ac signal, ac signal for being exported by piezoelectric transducer converts the current rectifying and wave filtering circuit of level and smooth DC signal to and connects with current rectifying and wave filtering circuit and be used for storage of electrical energy and be the accumulator of each electricity consumption module for power supply in the speed of a motor vehicle and spacing intellectual monitoring unit, and multiple described piezoelectric transducer is parallel with one another to connect with current rectifying and wave filtering circuit afterwards.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, is characterized in that: described front pressure transducer and rear pressure transducer are piezoelectric pressure indicator.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, is characterized in that: the spacing between described front piezo strip and rear piezo strip is 8m ~ 12m.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, is characterized in that: described microprocessor module is single-chip microcomputer.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, is characterized in that: described digital display warning sign is LED display or LCD display.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, is characterized in that: it is the position of 40m ~ 60m that described digital display warning sign suspension is arranged on the distance of described rear piezo strip.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, it is characterized in that: described piezoelectric transducer comprises spaced upper steel disc and lower steel disc, and by the multi-disc piezoelectric ceramic piece of conducting resinl even adhesion between upper steel disc and lower steel disc, leave a fixed gap between piezoelectric ceramic piece described in multi-disc and be filled with epoxy resin in described space, described upper steel disc is connected with the first wire, described lower steel disc is connected with the second wire.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, is characterized in that: the shape of described piezoelectric ceramic piece is round pie.
The speed of a motor vehicle of above-mentioned a kind of piezoelectric self electricity and spacing intelligent monitor system, it is characterized in that: described current rectifying and wave filtering circuit is by power supply voltage stabilizing chip 7805, first bipod connector J1, second bipod connector J2, commutation diode D1, D2, D3 and D4, light emitting diode D5, resistance R1, polar capacitor C1 and C2, and polarity free capacitor C3 forms, the pin 1 of described power supply voltage stabilizing chip 7805 and the positive pole of commutation diode D1, the positive pole of commutation diode D2 and the positive pole of polar capacitor C1 connect, the negative pole of described commutation diode D1 connects with the pin 1 of the first bipod connector J1 and the positive pole of commutation diode D3, the negative pole of described commutation diode D2 connects with the pin 2 of the first bipod connector J1 and the positive pole of commutation diode D4, the pin 3 of described power supply voltage stabilizing chip 7805 and the positive pole of polar capacitor C2, one end of polarity free capacitor C3, the positive pole of light emitting diode D5 and the pin 2 of the second bipod connector J2 connect, the negative pole of described light emitting diode D5 connects with one end of resistance R1, the negative pole of described commutation diode D3, the negative pole of commutation diode D4, the negative pole of polar capacitor C1, the pin 2 of power supply voltage stabilizing chip 7805, the negative pole of polar capacitor C2, the other end of polarity free capacitor C3, the other end of resistance R1 and the pin 1 of the second bipod connector J2 all ground connection, the pin 1 of described first bipod connector J1 and pin 2 respectively with multiple parallel with one another after two signal output parts of piezoelectric transducer connect, the pin 1 of described second bipod connector J2 and pin 2 connect with the negative pole of accumulator and positive pole respectively.
Present invention also offers the speed of a motor vehicle and the spacing intelligent monitoring method of the piezoelectric self electricity that a kind of data processing speed is fast, real-time performance is good, it is characterized in that the method comprises the following steps:
The storage of step one, piezoelectric self electricity and electric energy and supply: when the road being equipped with piezoelectric transducer is crossed in garage, described piezoelectric transducer converts the mechanical vibration produced in vehicle traveling process to ac signal and exports to current rectifying and wave filtering circuit, described current rectifying and wave filtering circuit carries out rectifying and wave-filtering process to the ac signal that piezoelectric transducer exports, and converts ac signal to level and smooth DC signal and export to accumulator to store; Accumulator starts to power to pressure transducer, amplification circuit module, filter circuit module, hysteresis comparator circuit module, microprocessor module and digital display warning sign after each in the front pressure transducer of each in front piezo strip, rear piezo strip, and the speed of a motor vehicle and spacing intellectual monitoring unit start to enter duty;
Step 2, signal Real-time Collection and process: multiple described front pressure transducer detects automobile through front piezo strip in real time to the pressure signal of front piezo strip and amplified through amplification circuit module and filter circuit module successively by detected signal and export to hysteresis comparator circuit module after filtering process, the pressure signal that front pressure transducer detects by hysteresis comparator circuit module is compared with exporting to its reference signal by microprocessor module, when the pressure signal that current pressure sensor detects is greater than reference signal, hysteresis comparator circuit module exports a high level to microprocessor module, when microprocessor module receives the high level of hysteresis comparator circuit module output, just be judged as that garage is crossed front piezo strip and records the moment that automobile back wheel runs over front piezo strip, repeat above process, microprocessor module records the moment t that many automobile back wheels run over front piezo strip respectively
a1, t
a2... t
an,
Multiple described rear pressure transducer detect in real time through piezo strip later automobile to after piezo strip pressure signal and detected signal is amplified through amplification circuit module and filter circuit module successively and exports to hysteresis comparator circuit module after filtering process, the pressure signal that rear pressure transducer detects by hysteresis comparator circuit module is compared with exporting to its reference signal by microprocessor module, when the pressure signal that rear pressure transducer detects is greater than reference signal, hysteresis comparator circuit module exports a high level to microprocessor module, when microprocessor module receives the high level of hysteresis comparator circuit module output, just be judged as piezo strip after running car and record the moment that automobile back wheel runs over rear piezo strip, repeat above process, microprocessor module records the moment t that many automobile back wheels run over rear piezo strip respectively
b1, t
b2... t
bn,
Wherein, n is the quantity of the automobile running over front piezo strip and rear piezo strip and is natural number;
Step 3, speed information process and display: described microprocessor module is according to formula
Calculate the speed v of i-th automobile
i, and by the speed v of i-th automobile
ibe presented on digital display warning sign; Wherein, Δ t
ibe the moment t that i-th automobile back wheel runs over rear piezo strip
bithe moment t of front piezo strip is run over i-th automobile back wheel
aibetween mistiming, S is the spacing between described front piezo strip and rear piezo strip, and the value of i is 1 ~ n;
Step 4, spacing information processing and display: described microprocessor module is according to formula
Calculate the spacing s between i-th automobile and the i-th-1 automobile
i-1, i, and by the spacing s between i-th automobile and the i-th-1 automobile
i-1, ibe presented on digital display warning sign; Wherein, Δ t
i-1be the moment t that the i-th-1 automobile back wheel runs over rear piezo strip
bi-1the moment t of front piezo strip is run over the i-th-1 automobile back wheel
ai-1between mistiming, v
i-1be the speed of the i-th-1 automobile, t
aiit is the moment that i-th automobile back wheel runs over front piezo strip.
The present invention compared with prior art has the following advantages:
1, the present invention is rationally novel in design, and it is convenient to realize.
2, intelligence degree of the present invention is high, uses simple operation.
3, first the present invention is converted into electric energy by piezoelectric transducer the effect of traffic load, is used as the energy source of system effective operation, without the need to external power supply, and not only environmental protection but also economic, and overcome a difficult problem for power shortage from far-off regions.
4, the present invention is full-automatic operation, without the need to manual control, uses manpower and material resources sparingly, save maintenance and repair cost, digital display warning sign is LED display or LCD display, and alarming effect there has also been very large improvement, pratical and feasible, and can be used as the part in intelligent transportation system.
5, the travel conditions that the present invention can allow driver current to oneself is had gained some understanding, and makes in time and adjust behave accordingly, guarantees vehicle safety with this, travels rapidly, reduces the generation of traffic hazard.
6, of the present invention practical, result of use is good, is convenient to promote the use of.
In sum, the present invention is novel in design rationally, and it is convenient to realize, and intelligence degree is high, not only environmental protection but also economic, and can guarantee vehicle safety, travel rapidly, reduce the generation of traffic hazard, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the speed of a motor vehicle and the installation position schematic diagram of spacing intelligent monitor system on road of piezoelectric self electricity of the present invention.
Fig. 2 is the speed of a motor vehicle of piezoelectric self electricity of the present invention and the schematic block circuit diagram of spacing intelligent monitor system.
Fig. 3 is the front view of piezoelectric transducer of the present invention.
Fig. 4 is the A-A cut-open view of Fig. 3.
Fig. 5 is the left view of Fig. 3.
Fig. 6 is the circuit theory diagrams of current rectifying and wave filtering circuit of the present invention.
Fig. 7 is the speed of a motor vehicle of piezoelectric self electricity of the present invention and the method flow diagram of spacing intelligent monitoring method.Description of reference numerals:
1-front piezo strip; 1-1-front pressure transducer; 2-rear piezo strip;
2-1-rear pressure transducer; 3-piezoelectric transducer; 3-1-upper steel disc;
3-2-lower steel disc; 3-3-piezoelectric ceramic piece; 3-4-epoxy resin;
3-5-the first wire; 3-6-the second wire; 4-intelligent controller;
4-1-amplification circuit module; 4-2-filter circuit module;
4-3-hysteresis comparator circuit module; 4-4-microprocessor module;
5-digital display warning sign; 6-accumulator; 7-current rectifying and wave filtering circuit;
8-road; 9-automobile.
Embodiment
As depicted in figs. 1 and 2, the speed of a motor vehicle of piezoelectric self electricity of the present invention and spacing intelligent monitor system, the piezoelectric self electric unit comprising the speed of a motor vehicle and spacing intellectual monitoring unit and power for the speed of a motor vehicle and spacing intellectual monitoring unit, the described speed of a motor vehicle and spacing intellectual monitoring unit comprise lateral separation arrange be laid on road 8 road surface under and for traffic load being converted into the front piezo strip of electric signal 1 and rear piezo strip 2, and carry out for the electric signal exported front piezo strip 1 and rear piezo strip 2 intelligent controller 4 that analyzing and processing draws the spacing between front car and rear car, described front piezo strip 1 by multiple be arranged in band shape before pressure transducer 1-1 form, described rear piezo strip 2 is made up of multiple rear pressure transducer 2-1 being arranged in band shape, described intelligent controller 4 is by the amplification circuit module 4-1 connected successively, filter circuit module 4-2, hysteresis comparator circuit module 4-3 and microprocessor module 4-4 is formed, the output terminal of described microprocessor module 4-4 is connected to and is arranged on road 8 side and digital display warning sign 5 for showing the speed of a motor vehicle and spacing, multiple described front pressure transducer 1-1 and multiple described rear pressure transducer 2-1 all connects with described amplification circuit module 4-1, multiple piezoelectric transducers 3 under described piezoelectric self electric unit comprises road 8 road surface being laid on wheel trajectories band place, road 8 both sides and for the mechanical vibration produced in automobile 9 driving process being converted to ac signal, ac signal for being exported by piezoelectric transducer 3 converts the current rectifying and wave filtering circuit 7 of level and smooth DC signal to and connects with current rectifying and wave filtering circuit 7 and be used for storage of electrical energy and be the accumulator 6 of each electricity consumption module for power supply in the speed of a motor vehicle and spacing intellectual monitoring unit, and multiple described piezoelectric transducer 3 is parallel with one another to connect with current rectifying and wave filtering circuit 7 afterwards.
In the present embodiment, described front pressure transducer 1-1 and rear pressure transducer 2-1 is piezoelectric pressure indicator.Spacing between described front piezo strip 1 and rear piezo strip 2 is 8m ~ 12m.Described microprocessor module 4-4 is single-chip microcomputer.Described digital display warning sign 5 is LED display or LCD display.Described digital display warning sign 5 hangs and is arranged on the distance of described rear piezo strip 2 to be the position of 40m ~ 60m, to have time enough reading displayed result to allow driver.
Composition graphs 3 ~ Fig. 5, in the present embodiment, described piezoelectric transducer 3 comprises spaced upper steel disc 3-1 and lower steel disc 3-2, and by the multi-disc piezoelectric ceramic piece 3-3 of conducting resinl even adhesion between upper steel disc 3-1 and lower steel disc 3-2, leave a fixed gap between piezoelectric ceramic piece 3-3 described in multi-disc and be filled with epoxy resin 3-4 in described space, described upper steel disc 3-1 is connected with the first wire 3-5, described lower steel disc 3-2 is connected with the second wire 3-6.The shape of described piezoelectric ceramic piece 3-3 is round pie.Under piezoelectric transducer 3 is laid on road 8 road surface at wheel trajectories band place, road 8 both sides, upper steel disc 3-1 and lower steel disc 3-2 is delivered to the longitudinal pressure of road pavement in the vehicle traveling process received on piezoelectric ceramic piece 3-3, the stressed generation deformation of piezoelectric ceramic piece 3-3 and produce alternating current.Leave a fixed gap between piezoelectric ceramic piece 3-3 described in multi-disc, to guarantee that piezoelectric ceramic piece 3-3 can lateral deformation, ensure that generating effect.
Composition graphs 6, in the present embodiment, described current rectifying and wave filtering circuit 7 is by power supply voltage stabilizing chip 7805, first bipod connector J1, second bipod connector J2, commutation diode D1, D2, D3 and D4, light emitting diode D5, resistance R1, polar capacitor C1 and C2, and polarity free capacitor C3 forms, the pin 1 of described power supply voltage stabilizing chip 7805 and the positive pole of commutation diode D1, the positive pole of commutation diode D2 and the positive pole of polar capacitor C1 connect, the negative pole of described commutation diode D1 connects with the pin 1 of the first bipod connector J1 and the positive pole of commutation diode D3, the negative pole of described commutation diode D2 connects with the pin 2 of the first bipod connector J1 and the positive pole of commutation diode D4, the pin 3 of described power supply voltage stabilizing chip 7805 and the positive pole of polar capacitor C2, one end of polarity free capacitor C3, the positive pole of light emitting diode D5 and the pin 2 of the second bipod connector J2 connect, the negative pole of described light emitting diode D5 connects with one end of resistance R1, the negative pole of described commutation diode D3, the negative pole of commutation diode D4, the negative pole of polar capacitor C1, the pin 2 of power supply voltage stabilizing chip 7805, the negative pole of polar capacitor C2, the other end of polarity free capacitor C3, the other end of resistance R1 and the pin 1 of the second bipod connector J2 all ground connection, the pin 1 of described first bipod connector J1 and pin 2 respectively with multiple parallel with one another after two signal output parts of piezoelectric transducer 3 connect, the pin 1 of described second bipod connector J2 and pin 2 connect with the negative pole of accumulator 6 and positive pole respectively.
Composition graphs 7, the speed of a motor vehicle of piezoelectric self electricity of the present invention and spacing intelligent monitoring method, comprise the following steps:
The storage of step one, piezoelectric self electricity and electric energy and supply: when automobile 9 runs over the road 8 being equipped with piezoelectric transducer 3, described piezoelectric transducer 3 converts the mechanical vibration produced in automobile 9 driving process to ac signal and exports to current rectifying and wave filtering circuit 7, the ac signal that described current rectifying and wave filtering circuit 7 pairs of piezoelectric transducers 3 export carries out rectifying and wave-filtering process, converts ac signal to level and smooth DC signal and export to accumulator 6 to store; Accumulator 6 starts to power to pressure transducer 2-1, amplification circuit module 4-1, filter circuit module 4-2, hysteresis comparator circuit module 4-3, microprocessor module 4-4 and digital display warning sign 5 after each in the front pressure transducer 1-1 of each in front piezo strip 1, rear piezo strip 2, and the speed of a motor vehicle and spacing intellectual monitoring unit start to enter duty;
Step 2, signal Real-time Collection and process: multiple described front pressure transducer 1-1 detects automobile 9 through front piezo strip 1 in real time to the pressure signal of front piezo strip 1 and amplified through amplification circuit module 4-1 and filter circuit module 4-2 successively by detected signal and export to hysteresis comparator circuit module 4-3 after filtering process, the pressure signal that front pressure transducer 1-1 detects by hysteresis comparator circuit module 4-3 is compared with exporting to its reference signal by microprocessor module 4-4, when the pressure signal that current pressure sensor 1-1 detects is greater than reference signal, hysteresis comparator circuit module 4-3 exports a high level to microprocessor module 4-4, when microprocessor module 4-4 receives the high level of hysteresis comparator circuit module 4-3 output, just be judged as that automobile 9 runs over front piezo strip 1 and records the moment that automobile 9 trailing wheel runs over front piezo strip 1, repeat above process, microprocessor module 4-4 records the moment t that many automobiles 9 trailing wheel runs over front piezo strip 1 respectively
a1, t
a2... t
an,
Multiple described rear pressure transducer 2-1 detect in real time through piezo strip 2 later automobile 9 to after piezo strip 2 pressure signal and detected signal is amplified through amplification circuit module 4-1 and filter circuit module 4-2 successively and exports to hysteresis comparator circuit module 4-3 after filtering process, the pressure signal that rear pressure transducer 2-1 detects by hysteresis comparator circuit module 4-3 is compared with exporting to its reference signal by microprocessor module 4-4, when the pressure signal that rear pressure transducer 2-1 detects is greater than reference signal, hysteresis comparator circuit module 4-3 exports a high level to microprocessor module 4-4, when microprocessor module 4-4 receives the high level of hysteresis comparator circuit module 4-3 output, just be judged as that automobile 9 runs over rear piezo strip 2 and records the moment that automobile 9 trailing wheel runs over rear piezo strip 2, repeat above process, microprocessor module 4-4 records the moment t that many automobiles 9 trailing wheel runs over rear piezo strip 2 respectively
b1, t
b2... t
bn,
Wherein, n is the quantity of the automobile 9 running over front piezo strip 1 and rear piezo strip 2 and is natural number;
Step 3, speed information process and display: described microprocessor module 4-4 is according to formula
Calculate the speed v of i-th automobile 9
i, and by the speed v of i-th automobile 9
ibe presented on digital display warning sign 5; Wherein, Δ t
ibe the moment t that i-th automobile 9 trailing wheel runs over rear piezo strip 2
bithe moment t of front piezo strip 1 is run over i-th automobile 9 trailing wheel
aibetween mistiming, S is the spacing between described front piezo strip 1 and rear piezo strip 2, and the value of i is 1 ~ n;
Step 4, spacing information processing and display: described microprocessor module 4-4 is according to formula
Calculate the spacing s between i-th automobile 9 and the i-th-1 automobile 9
i-1, i, and by the spacing s between i-th automobile 9 and the i-th-1 automobile 9
i-1, ibe presented on digital display warning sign 5; Wherein, Δ t
i-1be the moment t that the i-th-1 automobile 9 trailing wheel runs over rear piezo strip 2
bi-1the moment t of front piezo strip 1 is run over the i-th-1 automobile 9 trailing wheel
ai-1between mistiming, v
i-1be the speed of the i-th-1 automobile 9, t
aiit is the moment that i-th automobile 9 trailing wheel runs over front piezo strip 1.
During concrete enforcement, in order to play the alarming effect of digital display warning sign 5 better, can by arranging speed of a motor vehicle limit value and Distance l imit, and reached by conversion digital display warning sign 5 display font color, the speed information that described microprocessor module 4-4 obtains its analyzing and processing is compared with vehicle-speed limit, and the spacing information its analyzing and processing obtained is compared with spacing limit value, under normal circumstances, when namely not exceeding limit value, shown font is green, when driving is driven over the speed limit or closely travel, respective items on digital display warning sign 5 becomes redness from green, and constantly glitter, to remind driver, current transport condition is adjusted.In order to time enough be provided to make it adjust transport condition for driving vehicle, the such monitoring system in 3 places can be set continuously at 500 meters, interval, enable driver progressively adjust transport condition, to make it to reach best.In order to energy-conservation, can also set the displaying time of digital display warning sign 5, such as, be set to 3s, carry out vehicle process without male offspring in 3s, digital display warning sign 5 quits work, and waits for the display and control order of microprocessor module 4-4 next time, to reach energy-conservation object.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (8)
1. the speed of a motor vehicle of a piezoelectric self electricity and spacing intelligent monitor system, it is characterized in that: the piezoelectric self electric unit comprising the speed of a motor vehicle and spacing intellectual monitoring unit and power for the speed of a motor vehicle and spacing intellectual monitoring unit, the described speed of a motor vehicle and spacing intellectual monitoring unit comprise lateral separation arrange be laid on road (8) road surface under and for traffic load being converted into the front piezo strip of electric signal (1) and rear piezo strip (2), and the electric signal for exporting front piezo strip (1) and rear piezo strip (2) carries out the intelligent controller (4) that analyzing and processing draws the spacing between front car and rear car, described front piezo strip (1) by multiple be arranged in band shape before pressure transducer (1-1) form, described rear piezo strip (2) is made up of multiple rear pressure transducer (2-1) being arranged in band shape, described intelligent controller (4) is by the amplification circuit module connected successively (4-1), filter circuit module (4-2), hysteresis comparator circuit module (4-3) and microprocessor module (4-4) are formed, the output terminal of described microprocessor module (4-4) is connected to and is arranged on road (8) side and digital display warning sign (5) for showing the speed of a motor vehicle and spacing, multiple described front pressure transducer (1-1) and multiple described rear pressure transducer (2-1) all connect with described amplification circuit module (4-1), multiple piezoelectric transducers (3) under described piezoelectric self electric unit comprises road (8) road surface being laid on wheel trajectories band place, road (8) both sides and for the mechanical vibration produced in automobile (9) driving process being converted to ac signal, ac signal for being exported by piezoelectric transducer (3) converts the current rectifying and wave filtering circuit (7) of level and smooth DC signal to and to connect with current rectifying and wave filtering circuit (7) and for storage of electrical energy and be the accumulator (6) of each electricity consumption module for power supply in the speed of a motor vehicle and spacing intellectual monitoring unit, connect with current rectifying and wave filtering circuit (7) after multiple described piezoelectric transducer (3) is parallel with one another,
Described piezoelectric transducer (3) comprises spaced upper steel disc (3-1) and lower steel disc (3-2), and by the multi-disc piezoelectric ceramic piece (3-3) of conducting resinl even adhesion between upper steel disc (3-1) and lower steel disc (3-2), leave a fixed gap between piezoelectric ceramic piece described in multi-disc (3-3) and in described space, be filled with epoxy resin (3-4), described upper steel disc (3-1) is connected with the first wire (3-5), described lower steel disc (3-2) is connected with the second wire (3-6);
Described current rectifying and wave filtering circuit (7) is by power supply voltage stabilizing chip 7805, first bipod connector J1, the second bipod connector J2, commutation diode D1, D2, D3 and D4, light emitting diode D5, resistance R1, polar capacitor C1 and C2, and polarity free capacitor C3 forms, the pin 1 of described power supply voltage stabilizing chip 7805 and the positive pole of commutation diode D1, the positive pole of commutation diode D2 and the positive pole of polar capacitor C1 connect, the negative pole of described commutation diode D1 connects with the pin 1 of the first bipod connector J1 and the positive pole of commutation diode D3, the negative pole of described commutation diode D2 connects with the pin 2 of the first bipod connector J1 and the positive pole of commutation diode D4, the pin 3 of described power supply voltage stabilizing chip 7805 and the positive pole of polar capacitor C2, one end of polarity free capacitor C3, the positive pole of light emitting diode D5 and the pin 2 of the second bipod connector J2 connect, the negative pole of described light emitting diode D5 connects with one end of resistance R1, the negative pole of described commutation diode D3, the negative pole of commutation diode D4, the negative pole of polar capacitor C1, the pin 2 of power supply voltage stabilizing chip 7805, the negative pole of polar capacitor C2, the other end of polarity free capacitor C3, the other end of resistance R1 and the pin 1 of the second bipod connector J2 all ground connection, the pin 1 of described first bipod connector J1 and pin 2 respectively with multiple parallel with one another after two signal output parts of piezoelectric transducer (3) connect, the pin 1 of described second bipod connector J2 and pin 2 connect with the negative pole of accumulator (6) and positive pole respectively.
2. according to the speed of a motor vehicle and the spacing intelligent monitor system of a kind of piezoelectric self electricity according to claim 1, it is characterized in that: described front pressure transducer (1-1) and rear pressure transducer (2-1) are piezoelectric pressure indicator.
3., according to the speed of a motor vehicle and the spacing intelligent monitor system of a kind of piezoelectric self electricity according to claim 1, it is characterized in that: the spacing between described front piezo strip (1) and rear piezo strip (2) is 8m ~ 12m.
4., according to the speed of a motor vehicle and the spacing intelligent monitor system of a kind of piezoelectric self electricity according to claim 1, it is characterized in that: described microprocessor module (4-4) is single-chip microcomputer.
5. according to the speed of a motor vehicle and the spacing intelligent monitor system of a kind of piezoelectric self electricity according to claim 1, it is characterized in that: described digital display warning sign (5) is LED display or LCD display.
6. according to the speed of a motor vehicle and the spacing intelligent monitor system of a kind of piezoelectric self electricity described in claim 1 or 5, it is characterized in that: it is the position of 40m ~ 60m that the suspension of described digital display warning sign (5) is arranged on the distance of described rear piezo strip (2).
7. according to the speed of a motor vehicle and the spacing intelligent monitor system of a kind of piezoelectric self electricity according to claim 5, it is characterized in that: the shape of described piezoelectric ceramic piece (3-3) is round pie.
8. utilize the speed of a motor vehicle and the spacing intelligent monitoring method of the piezoelectric self electricity of system as claimed in claim 1, it is characterized in that the method comprises the following steps:
The storage of step one, piezoelectric self electricity and electric energy and supply: when automobile (9) runs over road (8) that are equipped with piezoelectric transducer (3), described piezoelectric transducer (3) converts the mechanical vibration produced in automobile (9) driving process to ac signal and exports to current rectifying and wave filtering circuit (7), described current rectifying and wave filtering circuit (7) carries out rectifying and wave-filtering process to the ac signal that piezoelectric transducer (3) exports, and converts ac signal to level and smooth DC signal and export to accumulator (6) to store; Accumulator (6) starts to power to pressure transducer (2-1), amplification circuit module (4-1), filter circuit module (4-2), hysteresis comparator circuit module (4-3), microprocessor module (4-4) and digital display warning sign (5) after each the front pressure transducer (1-1) in front piezo strip (1), each in rear piezo strip (2), and the speed of a motor vehicle and spacing intellectual monitoring unit start to enter duty;
Step 2, signal Real-time Collection and process: multiple described front pressure transducer (1-1) is detected in real time automobile (9) through front piezo strip (1) to the pressure signal of front piezo strip (1) and detected signal is exported to hysteresis comparator circuit module (4-3) successively after amplification circuit module (4-1) and filter circuit module (4-2) carry out amplification and filtering process, the pressure signal that front pressure transducer (1-1) detects by hysteresis comparator circuit module (4-3) with exported to compared with its reference signal by microprocessor module (4-4), when the pressure signal that current pressure sensor (1-1) detects is greater than reference signal, hysteresis comparator circuit module (4-3) exports a high level to microprocessor module (4-4), when microprocessor module (4-4) receives the high level that hysteresis comparator circuit module (4-3) exports, just be judged as that automobile (9) runs over front piezo strip (1) and records the moment that automobile (9) trailing wheel runs over front piezo strip (1), repeat above process, microprocessor module (4-4) records the moment t that many automobiles (9) trailing wheel runs over front piezo strip (1) respectively
a1, t
a2... t
an,
Multiple described rear pressure transducer (2-1) detect in real time through piezo strip (2) later automobile (9) to after piezo strip (2) pressure signal and detected signal is exported to hysteresis comparator circuit module (4-3) successively after amplification circuit module (4-1) and filter circuit module (4-2) carry out amplification and filtering process, the pressure signal that rear pressure transducer (2-1) detects by hysteresis comparator circuit module (4-3) with exported to compared with its reference signal by microprocessor module (4-4), when the pressure signal that rear pressure transducer (2-1) detects is greater than reference signal, hysteresis comparator circuit module (4-3) exports a high level to microprocessor module (4-4), when microprocessor module (4-4) receives the high level that hysteresis comparator circuit module (4-3) exports, just be judged as that automobile (9) runs over rear piezo strip (2) and records the moment that automobile (9) trailing wheel runs over rear piezo strip (2), repeat above process, microprocessor module (4-4) records the moment t that many automobiles (9) trailing wheel runs over rear piezo strip (2) respectively
b1, t
b2... t
bn,
Wherein, n for run over the automobile (9) of front piezo strip (1) and rear piezo strip (2) quantity and for natural number;
Step 3, speed information process and display: described microprocessor module (4-4) is according to formula
Calculate the speed v of i-th automobile (9)
i, and by the speed v of i-th automobile (9)
ibe presented on digital display warning sign (5); Wherein, Δ t
ibe the moment t that i-th automobile (9) trailing wheel runs over rear piezo strip (2)
bithe moment t of front piezo strip (1) is run over i-th automobile (9) trailing wheel
aibetween mistiming, S is the spacing between described front piezo strip (1) and rear piezo strip (2), and the value of i is 1 ~ n;
Step 4, spacing information processing and display: described microprocessor module (4-4) is according to formula
Calculate the spacing s between i-th automobile (9) and the i-th-1 automobile (9)
i-1, i, and by the spacing s between i-th automobile (9) and the i-th-1 automobile (9)
i-1, ibe presented on digital display warning sign (5); Wherein, Δ t
i-1be the moment t that the i-th-1 automobile (9) trailing wheel runs over rear piezo strip (2)
bi-1the moment t of front piezo strip (1) is run over the i-th-1 automobile (9) trailing wheel
ai-1between mistiming, v
i-1be the speed of the i-th-1 automobile (9), t
aiit is the moment that i-th automobile (9) trailing wheel runs over front piezo strip (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038961.7A CN103134553B (en) | 2013-01-31 | 2013-01-31 | A kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310038961.7A CN103134553B (en) | 2013-01-31 | 2013-01-31 | A kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103134553A CN103134553A (en) | 2013-06-05 |
| CN103134553B true CN103134553B (en) | 2015-08-12 |
Family
ID=48494690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310038961.7A Expired - Fee Related CN103134553B (en) | 2013-01-31 | 2013-01-31 | A kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103134553B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207523B (en) * | 2015-10-09 | 2017-08-25 | 长安大学 | A kind of power generation pavement piezoelectric system and distribution method |
| CN105241591A (en) * | 2015-10-30 | 2016-01-13 | 湖北航天技术研究院总体设计所 | Adjustable retardation pressure alarm device |
| CN106168604A (en) * | 2016-08-04 | 2016-11-30 | 上海交通大学 | The monitoring method of a kind of concrete slab interlayer straight joint and device |
| CN107301781B (en) * | 2017-05-04 | 2020-07-07 | 浙江大学 | Road surface self-powered traffic monitoring device and method |
| CN107633705B (en) * | 2017-10-31 | 2023-10-20 | 武汉市政工程设计研究院有限责任公司 | Lane departure intelligent early warning system and method based on pavement feedback |
| CN107730912A (en) * | 2017-11-04 | 2018-02-23 | 浙江师范大学 | Automobile lane change detection means in a kind of tunnel of self power generation |
| CN108316073B (en) * | 2018-01-19 | 2019-12-31 | 长安大学 | Energy gathering system layout method based on piezoelectric substrate |
| CN108320528A (en) * | 2018-01-31 | 2018-07-24 | 武汉市政工程设计研究院有限责任公司 | A kind of passive spacing speed dynamic alerts device and method |
| CN108801336A (en) * | 2018-05-04 | 2018-11-13 | 东南大学 | A kind of method of piezoelectric-array monitoring vehicle speed and load-carrying |
| CN108396673A (en) * | 2018-05-16 | 2018-08-14 | 贵州大学 | A kind of intelligent speed bump device of municipal works |
| CN111968382A (en) * | 2020-08-14 | 2020-11-20 | 上海感探号信息科技有限公司 | Passive wireless vehicle speed and vehicle pressure sensing device |
| CN112945362A (en) * | 2021-01-29 | 2021-06-11 | 长安大学 | Dynamic sensing device and measuring method for axle weight and vehicle speed |
| CN113034975B (en) * | 2021-03-23 | 2022-09-27 | 浙江科技学院 | Expressway vehicle distance prompting system and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170927Y (en) * | 2007-10-16 | 2008-12-24 | 余亚莉 | Intelligent dust type traffic sensor and signal control network and message transmission system thereof |
| CN201413576Y (en) * | 2009-04-20 | 2010-02-24 | 重庆市华驰交通科技有限公司 | Piezoelectric traffic flow investigation system |
| CN201708712U (en) * | 2010-05-31 | 2011-01-12 | 朱盼 | Piezoelectric type vibration electricity generator |
| CN201781305U (en) * | 2010-08-30 | 2011-03-30 | 河海大学 | Automatic power supply type speed measurer |
| CN201974943U (en) * | 2011-01-21 | 2011-09-14 | 北京万集科技有限责任公司 | Traffic flow investigation system |
| CN202443583U (en) * | 2012-03-02 | 2012-09-19 | 长安大学 | Highway driving information active feedback device |
| CN102706420A (en) * | 2012-06-21 | 2012-10-03 | 厦门大学 | Device and method for dynamically detecting vehicle loading capacity and vehicle speed in real time |
| CN203053486U (en) * | 2013-01-31 | 2013-07-10 | 长安大学 | Piezoelectric electricity self-generating vehicle speed and distance intelligent monitoring system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2830966B1 (en) * | 2001-10-11 | 2005-04-01 | Electronique Controle Mesure | PROCESS FOR PROCESSING SIGNALS PROVIDED BY PIEZOELECTRIC SENSORS IMPLANT IN A PAVEMENT FOR MEASURING SPEED OF VEHICLES |
| JP2003233894A (en) * | 2002-02-07 | 2003-08-22 | Jigyo Sozo Kenkyusho:Kk | Vehicle alarming device and vehicle detection system |
-
2013
- 2013-01-31 CN CN201310038961.7A patent/CN103134553B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201170927Y (en) * | 2007-10-16 | 2008-12-24 | 余亚莉 | Intelligent dust type traffic sensor and signal control network and message transmission system thereof |
| CN201413576Y (en) * | 2009-04-20 | 2010-02-24 | 重庆市华驰交通科技有限公司 | Piezoelectric traffic flow investigation system |
| CN201708712U (en) * | 2010-05-31 | 2011-01-12 | 朱盼 | Piezoelectric type vibration electricity generator |
| CN201781305U (en) * | 2010-08-30 | 2011-03-30 | 河海大学 | Automatic power supply type speed measurer |
| CN201974943U (en) * | 2011-01-21 | 2011-09-14 | 北京万集科技有限责任公司 | Traffic flow investigation system |
| CN202443583U (en) * | 2012-03-02 | 2012-09-19 | 长安大学 | Highway driving information active feedback device |
| CN102706420A (en) * | 2012-06-21 | 2012-10-03 | 厦门大学 | Device and method for dynamically detecting vehicle loading capacity and vehicle speed in real time |
| CN203053486U (en) * | 2013-01-31 | 2013-07-10 | 长安大学 | Piezoelectric electricity self-generating vehicle speed and distance intelligent monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103134553A (en) | 2013-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103134553B (en) | A kind of speed of a motor vehicle of piezoelectric self electricity and spacing intelligent monitor system and method | |
| CN205318617U (en) | Intelligent traffic monitoring device | |
| CN105978447A (en) | Solar road power generation system | |
| CN204982762U (en) | Solar drive intelligence cleaning cart | |
| CN205407384U (en) | Electric automobile solar charging device and electric automobile | |
| CN203689691U (en) | Device used for detecting vehicle for safely travelling out of highway service zone | |
| CN209804005U (en) | Bend meeting early warning system | |
| CN203053486U (en) | Piezoelectric electricity self-generating vehicle speed and distance intelligent monitoring system | |
| CN107527523A (en) | A kind of one-way road road meeting intelligent reminding device and its control method | |
| CN201541361U (en) | Peak current control circuit, booster circuit and LED driver | |
| CN102662077A (en) | Vehicle speed measurement and speed-limiting alarm device | |
| CN206741701U (en) | A kind of multiple target laser radar vehicle detection apparatus | |
| CN205067101U (en) | A detecting system that charges of whole car state of detectable | |
| CN103231729A (en) | Portable approach alarm for electric traction train | |
| CN105427627A (en) | Method for vehicle flow detection at entrance and exit of parking lot and system of same | |
| CN213174992U (en) | Three-dimensional parking lot | |
| CN204068356U (en) | A kind of wireless charging circuit of electric automobile | |
| CN205983873U (en) | Highway driver fatigue alarm system of solar energy power supply | |
| CN201716862U (en) | Solar energy piezoelectric type intelligent traffic warning board | |
| CN201867965U (en) | Solar-energy magnetic nail wireless transmission type speed-limiting warning board | |
| CN206657493U (en) | A kind of detection circuit of Pedestrians and vehicles safety prompter | |
| CN206931207U (en) | A kind of traffic is taken pictures LED light special device | |
| CN201946124U (en) | Traffic light monitoring equipment | |
| CN204596127U (en) | A kind of wireless vehicle information collecting device based on ZIGBEE | |
| CN206821824U (en) | A kind of electric pole circuit senses automatic electricity getting frequency conversion acousto-optic intelligent bird-scaring unit with wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |