CN110246369A - A kind of parking stall measure system and detection method - Google Patents
A kind of parking stall measure system and detection method Download PDFInfo
- Publication number
- CN110246369A CN110246369A CN201910658744.5A CN201910658744A CN110246369A CN 110246369 A CN110246369 A CN 110246369A CN 201910658744 A CN201910658744 A CN 201910658744A CN 110246369 A CN110246369 A CN 110246369A
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- parking stall
- detector bar
- vehicle
- ceiling
- measure system
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 239000004020 conductor Substances 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000012163 sequencing technique Methods 0.000 abstract description 9
- 239000003990 capacitor Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/146—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is a limited parking space, e.g. parking garage, restricted space
Abstract
The invention discloses a kind of parking stall measure system and detection methods, belong to parking stall measure technical field.A kind of parking stall measure system, comprising: detection device, signal transmitting apparatus and terminal handler；Detection device includes a plurality of detector bar being arranged on the ground of parking stall side, and the extending direction of detector bar is each perpendicular to the extending direction of parking stall, and extending direction of a plurality of detector bar along parking stall is alternatively arranged；Detector bar includes ceiling and the piezoelectric patches that is arranged in inside ceiling；Piezoelectric patches is arranged along the extending direction interval of ceiling and by conductor wire parallel connection；Signal transmitting apparatus is connect with piezoelectric patches and terminal handler respectively.The present invention is by detecting the sequencing of piezoelectric patches signal, it may determine that vehicle drives into parking stall or is driven out to parking stall, therefore, only vehicle correctly drives into parking stall and the sequencing by detecting piezoelectric patches signal, parking space information can be just detected, to improve the accuracy and reliability of detection.
Description
Technical field
The present invention relates to parking stall measure technical fields, and in particular to a kind of parking stall measure system and detection method.
Background technique
More and more using the user of private car on present society, automobile has become the main friendship of most people's trip
Logical tool, but the problem for occurring parking difficulty therewith, looking for parking stall slow.Most parking lot hire management personnel carry out field control, deposit
In uncertain problem big, managerial ability is limited, standing cost is high.Current existing sensor control means need parking lot
It provides electric power to maintain, long term maintenance is at high cost, it is difficult to universal.
Currently, carrying out parking stall measure frequently with ultrasonic sensor stall testing apparatus or camera stall testing apparatus.
Repetition detection may result in using ultrasonic sensor detection device, detection range is not easy to control, and reliability is low, if there is non-seek
It looks for the vehicle driving of parking stall to enter detection range and also results in error detection, so reduce detection accuracy.The inspection of camera parking stall
It surveys device and relies on image procossing and character recognition extraction algorithm technology to detect parking stall, but since the device technique is at high cost
And open air is anti-interference, self-protection ability is poor, for general park field large-scale promotion and is not suitable for.
Summary of the invention
The purpose of the present invention is to provide a kind of parking stall measure system and detection methods, can to solve the detection of existing parking stall
The problem poor by property.
The technical scheme to solve the above technical problems is that
A kind of parking stall measure system, comprising: detection device, signal transmitting apparatus and terminal handler；Detection device packet
The a plurality of detector bar being arranged on the ground of parking stall side is included, the extending direction of detector bar is each perpendicular to the extending direction of parking stall, and
And extending direction of a plurality of detector bar along parking stall is alternatively arranged；Detector bar includes ceiling and the pressure that is arranged in inside ceiling
Electric piece；Piezoelectric patches is arranged along the extending direction interval of ceiling and by conductor wire parallel connection；Signal transmitting apparatus respectively with piezoelectricity
Piece is connected with terminal handler.
The present invention detects driving into and sailing for vehicle using piezoelectric effect as theoretical basis, with piezoelectric patches (i.e. piezoelectric transducer)
Out.When vehicle presses through piezoelectric patches, piezoelectric patches can generate electric signal, and signal transmitting apparatus receives electric signal and passes to terminal processes
Device is handled, and realizes detection, control to parking stall.The multiple piezoelectric patches being arranged in detector bar, can be to avoid due to piezoelectricity
Piece is too small and omits stop sign.Extending direction of a plurality of detector bar along parking stall carries out arranged for interval, and vehicle presses through detector bar tool
There is sequencing, by the sequencing for detecting piezoelectric patches signal, it can be determined that vehicle is into parking stall or to be driven out to parking stall,
Therefore, only vehicle correctly drives into parking stall and the sequencing by detecting piezoelectric patches signal, can just detect parking space information,
To improve the accuracy and reliability of detection.
Further, above-mentioned signal transmitting apparatus include single-chip microcontroller and with the battery of monolithic mechatronics and buzzing
Device (27)；Single-chip microcontroller is electrically connected by step-down rectifying circuit with piezoelectric patches, and single-chip microcontroller and terminal handler wireless communication connect.
Single-chip microcontroller of the present invention is used to receive the electric signal of piezoelectric patches transmitting, then signal is passed to terminal handler.Monolithic
The pressure drop rectification circuit being arranged between machine and piezoelectric patches can filter interference and noise, stable electric signal in environment, guarantee letter
Number transmission quality.
Further, above-mentioned signal transmitting apparatus further includes protective shell, and protective shell is arranged in parking stall close to detection device
On face；Single-chip microcontroller, battery and buzzer are separately positioned in protective shell.
Further, the side wall of above-mentioned protective shell is equipped with the output pin and USB interface connecting respectively with single-chip microcontroller；Protection
The power interface connecting with battery is additionally provided on the side wall of shell.
Further, the model ESP8266 of above-mentioned single-chip microcontroller.
ESP8266 has wireless transmission function, can be to terminal handler wirelessly transmitting data.When sensor is ground by vehicle
When pressure, the enable end ESP8266 input high level, chip is started to work, and under low level state, ESP8266 chip is closed, power supply
It closes, it is energy saving.ESP8266 carries out preliminary treatment analysis to the pulse signal received, by successively sentencing for piezoelectric patches signal
Determine parking stall vehicle " stop into " " outputing " state, information is sent to computer by Wi-Fi serial port module, carries out subsequent control
Processing.
Further, the surface of above-mentioned ceiling is equipped with waterproof layer.
The waterproof layer that the present invention is arranged on ceiling surface, it is possible to reduce influence of the environment to piezoelectric patches.
Further, the material of above-mentioned ceiling is foam, has shielding low-voltage power, plays overload buffer.
Further, the distance between above-mentioned adjacent ceiling is 0.5m；Extending direction of the adj acent piezoelectric piece along ceiling
Distance be no more than 180mm.
Consider that tire acts on the width on ground, adj acent piezoelectric piece is no more than along the distance of the extending direction of ceiling
180mm, it can be ensured that effective signal can be generated when vehicle passes through, it is ensured that the accuracy of detection.
A kind of detection method based on above-mentioned parking stall measure system characterized by comprising
(1) whether the detector bar on terminal handler detection parking stall has electric signal generation；
(2) when detecting that the detector bar on parking stall does not generate electric signal, no vehicle is by parking stall；
(3) when detecting that the detector bar on parking stall generates electric signal, terminal handler passes through electric signal and setting threshold values
It compares: if in threshold range, it is determined that there is vehicle process in parking stall；If being lower than threshold values, it is determined that parking stall is passed through without vehicle；If
Higher than threshold values, it is determined that vehicle seriously overloads or specification parking does not cause wheel to be pressed on detector bar for a long time；
(4) terminal handler judges whether received electric signal is sequentially generated from a plurality of detector bar, if not, it is determined that parking stall
No vehicle drives into or is driven out to, if so, determining that parking stall has vehicle to drive into or be driven out to.
Further, in above-mentioned steps (3): when the electric signal that detector bar (10) generate is higher than threshold values, single-chip microcontroller (21) control
Buzzer (27) processed issues standby signal；
The decision condition of step (4) includes:
S1: if a plurality of detector bar is sequentially generated electric signal along the direction of parking stall front end to parking stall tail end, it is determined that vehicle is sailed
Enter；
S2: if a plurality of detector bar is sequentially generated electric signal along the direction of parking stall tail end to parking stall front end, it is determined that vehicle is sailed
Out.
It can effectively judge whether parking stall has vehicle to drive into or be driven out to by a plurality of detector bar by this method, detection essence
Degree is high, and can also reject the electric signal generated when non-vehicle is passed through, effectively improves the precision of parking stall measure.
The invention has the following advantages:
(1) extending direction of the present invention using a plurality of detector bar along parking stall carries out arranged for interval, and vehicle presses through detector bar tool
There is sequencing, by the sequencing for detecting piezoelectric patches signal, it can be determined that vehicle is into parking stall or to be driven out to parking stall,
Therefore, only vehicle correctly drives into parking stall and the sequencing by detecting piezoelectric patches signal, can just detect parking space information,
To improve the accuracy and reliability of detection.
(2) present invention can reduce the influence of environment and pressure to piezoelectric patches, improve the service life of piezoelectric ceramics, and
It also can be reduced influence of the environment to single-chip microcontroller.
(3) parking stall measure system of the invention may be implemented modularized production, be easily assembled, and exploitation and maintenance cost are low,
Assembly can be completed in unchanged base, in the case where not changing route on a large scale, realized by manually to the liter of automatic management
Grade.
Detailed description of the invention
Fig. 1 is the layout drawing of parking stall measure system of the invention on general park position；
Fig. 2 is the layout drawing of parking stall measure system of the invention on the parking stall of side；
Fig. 3 is the schematic diagram of internal structure of detector bar of the invention；
Fig. 4 is the structural schematic diagram of signal transmitting apparatus of the invention；
Fig. 5 is the circuit diagram of step-down rectifying circuit of the invention；
Fig. 6 is the working principle diagram of buzzer of the invention；
Fig. 7 is the schematic diagram of method for detecting parking stalls of the present invention.
In figure: 10- detector bar；11- ceiling；12- piezoelectric patches；20- signal transmitting apparatus；21- single-chip microcontroller；22- electric power storage
Pond；23- protective shell；24- output pin；25-USB interface；26- power interface；27- buzzer；The parking stall 30-.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment
Please refer to Fig. 1, a kind of parking stall measure system, comprising: detection device, signal transmitting apparatus 20 and terminal handler
(not shown).The middle part of 30 side of parking stall is arranged in detection device, when vehicle being avoided to adjust position in parking stall 30, fills with monitoring
It sets and contacts by mistake.Detection device includes that 2 detector bars, 10,2 10 extending directions of detector bar are vertical with the extending direction of parking stall 30,
And extending direction of 2 detector bars 10 along parking stall 30 is longitudinal, is alternatively arranged, and vehicle can successively pass through 2 when entering parking stall 30
Detector bar 10, so that the signal for detecting 2 detector bars 10 has sequencing.Signal transmitting apparatus 20 is positioned close to examine
The position of item 10 is surveyed, signal transmitting apparatus 20 is connect with detection device and terminal handler respectively.In the present embodiment, parking stall 30
For general park position；The quantity of detector bar 10 can also be 3,4,5 etc.；Between adjacent detector bar 10.Of the invention other
In embodiment, parking stall 30 can also be side parking stall, and referring to Fig. 2, detection device is close to the side with barrier at this time.
Referring to figure 3., detector bar 10 includes ceiling 11 and multiple piezoelectric patches 12.Multiple piezoelectric patches 12 are arranged in ceiling
11 inside, and arranged along the extending direction of ceiling 11 in a word interval, since the width that general tire acts on bottom surface is
180mm, therefore the distance between two neighboring piezoelectric patches 12 is 180mm, it is ensured that effective signal can be generated when vehicle passes through,
Guarantee the accuracy of detection.Piezoelectric patches 12 in same ceiling 11 is electrically connected by parallel connection.
In the present embodiment, the model, parameter of piezoelectric patches 12 are as shown in table 1.
Table 1
Referring to figure 4., signal transmitting apparatus 20 includes protective shell 23.Single-chip microcontroller 21, electric power storage are fixed in protective shell 23
Pond 22 and buzzer 27.Single-chip microcontroller 21 is electrically connected by step-down rectifying circuit (shown in Fig. 5) with piezoelectric patches 12, is improved signal and is passed
Transmission quality.Battery 22 and buzzer 27 are electrically connected with single-chip microcontroller 21 respectively, provide electric energy for single-chip microcontroller 21.Single-chip microcontroller 21 and end
Hold processor wireless communication connection.In the present embodiment, the model ESP8266, ESP8266 of single-chip microcontroller 21 have wireless WIFI
Module can be realized the remote transmission of data；Battery 22 is small-sized 3V battery.
Referring to figure 5., pressure drop rectification circuit includes diode D1, D2, D3, D4, D5, capacitor C1, C2, C3, C4, C5, surely
Press chip, inductance L1 and resistance R.In the present embodiment, the model 7805 of voltage stabilizing chip.
The output end of diode D1 is connect with the input terminal of diode D2, and the output end of diode D2 is defeated with diode D4's
Outlet connection, the input terminal of diode D4 are connect with the output end of diode D3, and the input terminal of diode D3 is with diode D1's
Input terminal connection, makes to form bridge rectifier between diode D1, D2, D3, D4.
The junction of the input terminal of the output end and diode D2 of diode D1 and the input terminal and second level of diode D4
The junction of the output end of pipe D3 is electrically connected with piezoelectric patches 12 respectively.
The junction of the output end of the output end and diode D4 of diode D2 respectively with capacitor C1, C2, C3, C4, C5
The input terminal of one end and diode D5 connection, the junction of the input terminal of the input terminal and diode D1 of diode D3 respectively with
The output end connection of the other end and diode D5 of capacitor C1, C2, C3, C4, C5, makes capacitor C1, C2, C3, C4, C5 level-one two
Pole pipe D5 forms parallel connection.The junction of the output end of the output end and diode D4 of diode D2 and the input terminal of diode D3
It is also connect respectively with single-chip microcontroller 21 with the junction of the input terminal of diode D1.
The both ends of voltage stabilizing chip are connect with capacitor C2 with capacitor C3 respectively, and also with the output end of diode D2 and two poles
The junction of the output end of pipe D4 connects.The both ends of inductance L1 are connect with the input terminal of capacitor C5 and diode D5 respectively, and
Also it is connect with the junction of the output end of diode D2 and the output end of diode D4.Resistance R is in parallel and electric with diode D5
The input terminal of diode D5 is arranged in resistance.
Fig. 6 is please referred to, buzzer operating circuit includes pull down resistor 10K, triode, loudspeaker.Pull down resistor R and three poles
The connection of pipe b pin, triode e pin connect DC power supply VCC, and triode c pin is connect with 1 line of loudspeaker, and 2 line of loudspeaker connects
Ground.
In this example, when determining protection housing apparatus conquassation or the long-term fail in compression of piezoelectric patches, single-chip microcontroller are defeated to triode
Enter to detect signal, loudspeaker is driven by triode, sounds an alarm it, parking space-detecting device has been in damage herein for prompting
State.
Please refer to Fig. 7, a kind of detection method based on above-mentioned parking stall measure system, comprising:
(1) whether the detector bar 10 on terminal handler detection parking stall 30 has electric signal generation；
(2) when detecting that the detector bar 10 on parking stall 30 does not generate electric signal, no vehicle is by parking stall 30；
(3) when detecting that the detector bar 10 on parking stall 30 generates electric signal, terminal handler passes through electric signal and setting
Threshold values compares: if in threshold range, it is determined that there is vehicle process in parking stall 30；If being lower than threshold values, it is determined that parking stall 30 is without vehicle
Pass through；If being higher than threshold values, it is determined that vehicle seriously overloads or specification parking does not cause wheel to be pressed on detector bar 10 for a long time,
Single-chip microcontroller 21 controls buzzer 27 and issues standby signal；
(4) terminal handler judges whether received electric signal is sequentially generated from a plurality of detector bar 10；
If not, it is determined that parking stall 30 is driven into or is driven out to without vehicle；
If so, determining that parking stall 30 has vehicle to drive into or be driven out to, decision condition is as follows:
S1: if a plurality of detector bar 10 is sequentially generated electric signal along the direction of parking stall front end to parking stall tail end, it is determined that vehicle
It drives into；
If a plurality of detector bar 10 of S2 is sequentially generated electric signal along the direction of parking stall tail end to parking stall front end, it is determined that vehicle is sailed
Out.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of parking stall measure system characterized by comprising detection device, signal transmitting apparatus (20) and terminal processes
Device；The detection device includes a plurality of detector bar (10) being arranged on the ground of parking stall side, the extending direction of detector bar (10)
It is each perpendicular to the extending direction of parking stall, and extending direction of a plurality of detector bar (10) along parking stall is alternatively arranged；The detector bar
It (10) include the piezoelectric patches (12) of ceiling (11) and setting in ceiling (11) inside；Piezoelectric patches (12) is along ceiling (11)
Extending direction interval be arranged and by conductor wire parallel connection；The signal transmitting apparatus (20) respectively with the piezoelectric patches (12) and
Terminal handler connection.
2. parking stall measure system according to claim 1, which is characterized in that the signal transmitting apparatus (20) includes monolithic
Machine (21) and the battery (22) and buzzer (27) being electrically connected with the single-chip microcontroller (21)；The single-chip microcontroller (21) passes through
Step-down rectifying circuit is electrically connected with the piezoelectric patches (12), and the single-chip microcontroller (21) and terminal handler wireless communication connect
It connects.
3. parking stall measure system according to claim 2, which is characterized in that the signal transmitting apparatus further includes protective shell
(23), the protective shell (23) is arranged on the ground of parking stall close to the detection device；The single-chip microcontroller (21), the battery
(22) and the buzzer (27) is separately positioned in the protective shell (23).
4. parking stall measure system according to claim 3, which is characterized in that the side wall of the protective shell (23) is equipped with difference
The output pin (24) and USB interface (25) being connect with the single-chip microcontroller (21)；It is additionally provided on the side wall of the protective shell (23)
The power interface (26) being connect with the battery (22).
5. parking stall measure system according to claim 4, which is characterized in that the model of the single-chip microcontroller (21)
ESP8266。
6. parking stall measure system according to any one of claims 1 to 5, which is characterized in that the table of the ceiling (11)
Face is equipped with waterproof layer.
7. parking stall measure system according to claim 6, which is characterized in that the material of the ceiling (11) is foam.
8. parking stall measure system according to claim 7, which is characterized in that the distance between adjacent ceiling (11) is
0.5m；Adj acent piezoelectric piece (12) is no more than 180mm along the distance of the extending direction of the ceiling (11).
9. a kind of detection method based on the described in any item parking stall measure systems of claim 1 to 8 characterized by comprising
(1) whether the detector bar (10) on terminal handler detection parking stall has electric signal generation；
(2) when detecting that the detector bar (10) on parking stall does not generate electric signal, no vehicle is by parking stall；
(3) when detecting that the detector bar (10) on parking stall generates electric signal, terminal handler passes through electric signal and setting threshold values
It compares: if in threshold range, it is determined that there is vehicle process in parking stall；If being lower than threshold values, it is determined that parking stall is passed through without vehicle；If
Higher than threshold values, it is determined that vehicle seriously overloads or specification parking does not cause wheel to be pressed on detector bar for a long time；
(4) terminal handler judges whether received electric signal is sequentially generated from a plurality of detector bar (10), if not, it is determined that parking stall
No vehicle drives into or is driven out to, if so, determining that parking stall has vehicle to drive into or be driven out to.
10. the detection method of parking stall measure system according to claim 9, which is characterized in that in step (3): working as detection
The electric signal that item (10) generates is higher than threshold values, and single-chip microcontroller (21) controls buzzer (27) and issues standby signal；
The decision condition of step (4) includes:
S1: if a plurality of detector bar (10) is sequentially generated electric signal along the direction of parking stall front end to parking stall tail end, it is determined that vehicle is sailed
Enter；
S2: if a plurality of detector bar (10) is sequentially generated electric signal along the direction of parking stall tail end to parking stall front end, it is determined that vehicle is sailed
Out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658744.5A CN110246369A (en) | 2019-07-22 | 2019-07-22 | A kind of parking stall measure system and detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658744.5A CN110246369A (en) | 2019-07-22 | 2019-07-22 | A kind of parking stall measure system and detection method |
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| Publication Number | Publication Date |
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| CN110246369A true CN110246369A (en) | 2019-09-17 |
Family
ID=67892962
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| CN201910658744.5A Pending CN110246369A (en) | 2019-07-22 | 2019-07-22 | A kind of parking stall measure system and detection method |
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| CN206670766U (en) * | 2017-03-20 | 2017-11-24 | 西京学院 | A kind of piezoelectric type overweight warning device |
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| CN101625254A (en) * | 2009-07-20 | 2010-01-13 | 江西省交通运输技术创新中心 | Piezoelectric type dynamic strip-shaped weighing plate |
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