CN210324599U - Parking space detection system - Google Patents
Parking space detection system Download PDFInfo
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- CN210324599U CN210324599U CN201921149148.6U CN201921149148U CN210324599U CN 210324599 U CN210324599 U CN 210324599U CN 201921149148 U CN201921149148 U CN 201921149148U CN 210324599 U CN210324599 U CN 210324599U
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Abstract
The utility model discloses a parking stall detecting system belongs to parking stall detection technical field. A parking space detection system, comprising: the system comprises a detection device, a signal transmission device and a terminal processor; the detection device comprises a plurality of detection strips arranged on the ground on one side of the parking space, the extension directions of the detection strips are all vertical to the extension direction of the parking space, and the detection strips are arranged at intervals along the extension direction of the parking space; the detection strip comprises a protection strip and a piezoelectric sheet arranged inside the protection strip; the piezoelectric sheets are arranged at intervals along the extension direction of the protection strip and are connected in parallel through a conducting wire; the signal transmission device is respectively connected with the piezoelectric sheet and the terminal processor. The utility model discloses a detect the precedence order of piezoelectric patches signal, can judge that the vehicle drives into the parking stall or drives off the parking stall, consequently, only the vehicle correctly drives into the parking stall and through the precedence order that detects the piezoelectric patches signal, just can detect parking stall information to the accuracy and the reliability that detect have been improved.
Description
Technical Field
The utility model relates to a parking stall detects technical field, concretely relates to parking stall detecting system.
Background
At present, in the society, more and more users use private cars, and cars become main vehicles for most people to go out, but the problems of difficult parking and slow parking space finding are caused. Most parking lots employ managers for field control, and the problems of high uncertainty, limited management capability and high long-term cost exist. The existing sensor control means needs a parking lot to provide power maintenance, and the long-term maintenance cost is high, so that the sensor control means is difficult to popularize.
At present, an ultrasonic sensor parking space detection device or a camera parking space detection device is often adopted for parking space detection. Adopt ultrasonic sensor detection device probably to lead to repeated detection, the detection range is difficult to control, and the reliability is low, if there is the vehicle of not looking for the parking stall to travel and get into the detection range also can lead to the false detection, so reduces and detects the accuracy. The camera parking space detection device relies on image processing and character recognition extraction algorithm technology to detect parking spaces, but the device is high in technical cost, poor in outdoor anti-interference and self-protection capability, and not suitable for large-scale popularization of common parking lots.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a parking stall detecting system to solve the relatively poor problem of detection reliability of current parking stall.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a parking space detection system, comprising: the system comprises a detection device, a signal transmission device and a terminal processor; the detection device comprises a plurality of detection strips arranged on the ground on one side of the parking space, the extension directions of the detection strips are all vertical to the extension direction of the parking space, and the detection strips are arranged at intervals along the extension direction of the parking space; the detection strip comprises a protection strip and a piezoelectric sheet arranged inside the protection strip; the piezoelectric sheets are arranged at intervals along the extension direction of the protection strip and are connected in parallel through a conducting wire; the signal transmission device is respectively connected with the piezoelectric sheet and the terminal processor.
The utility model discloses use piezoelectric effect as theoretical basis to piezoelectric patches (being piezoelectric sensor) come the income and roll off of detection vehicle. When the vehicle pressed the piezoelectricity piece, the piezoelectricity piece can produce the signal of telecommunication, and signal transmission device received the signal of telecommunication and transmits for terminal processor and handles, realizes detection, the management and control to the parking stall. The plurality of piezoelectric patches arranged in the detection strip can avoid missing the parking signal due to the undersize of the piezoelectric patches. Many detection strips carry out interval arrangement along the extending direction of parking stall, and the vehicle is pressed the detection strip and is had the precedence order, through the precedence order that detects the piezoelectric patches signal, can judge whether the vehicle gets into the parking stall or rolls off the parking stall, consequently, only the vehicle correctly rolls on the parking stall and through the precedence order that detects the piezoelectric patches signal, just can detect parking stall information to the accuracy and the reliability of detecting have been improved.
Further, the signal transmission device comprises a single chip microcomputer, and a storage battery and a buzzer which are electrically connected with the single chip microcomputer; the single chip microcomputer is electrically connected with the piezoelectric patch through the voltage reduction rectification circuit and is in wireless communication connection with the terminal processor.
The utility model discloses the singlechip is used for receiving the signal of telecommunication of piezoelectric patches transmission, gives terminal processor with the signal transmission again. The voltage drop rectifying circuit arranged between the single chip microcomputer and the piezoelectric plate can filter interference and noise in the environment, stabilize electric signals and guarantee signal transmission quality.
Furthermore, the signal transmission device also comprises a protective shell, and the protective shell is arranged on the ground of the parking space close to the detection device; the single chip microcomputer, the storage battery and the buzzer are arranged in the protective shell respectively.
Furthermore, the side wall of the protective shell is provided with an output pin and a USB interface which are respectively connected with the singlechip; and a power supply interface connected with the storage battery is also arranged on the side wall of the protective shell.
Further, the model of the single chip microcomputer is ESP 8266.
ESP8266 has a wireless transmission function and can transmit data to the terminal processor wirelessly. When the sensor is rolled by a vehicle, the high level is input into the enabling end of the ESP8266, the chip starts to work, and in the low level state, the ESP8266 chip is closed, the power supply is closed, and energy is saved. The ESP8266 performs preliminary processing analysis on the received pulse signals, judges the parking space vehicle parking-in state and parking-out state according to the sequence of the piezoelectric sheet signals, and sends information to a computer through the Wi-Fi serial port module to perform subsequent control processing.
Further, a waterproof layer is arranged on the surface of the protection strip.
The utility model discloses at the waterproof layer that the protection strip surface set up, can reduce the influence of environment to the piezoelectric patches.
Furthermore, the protection strips are made of foam cotton, so that the protection strips have the effects of shielding low pressure and playing a role in overload buffering.
Further, the distance between the adjacent protective strips is 0.5 m; the distance between adjacent piezoelectric sheets along the extension direction of the protection strip does not exceed 180 mm.
Considering the width of the tire acting on the ground, the distance between the adjacent piezoelectric sheets along the extending direction of the protection strips does not exceed 180mm, so that effective signals can be generated when a vehicle passes by, and the detection accuracy is ensured.
The utility model discloses following beneficial effect has:
(1) the utility model discloses a many test strips carry out interval arrangement along the extending direction of parking stall, and the vehicle has pressed the test strip and has had precedence order, through the precedence order that detects the piezoelectric patches signal, can judge that the vehicle gets into the parking stall or rolls off the parking stall, consequently, only the vehicle correctly drives in the parking stall and through the precedence order that detects the piezoelectric patches signal, just can detect parking stall information to the accuracy and the reliability that detect have been improved.
(2) The utility model discloses can reduce the influence of environment and pressure to the piezoelectric patches, improve piezoceramics's life to can also reduce the influence of environment to the singlechip.
(3) The utility model discloses a parking stall detecting system can realize modular production, easily assembly, and development and maintenance cost are low, can accomplish the assembly under the condition that does not change the ground, not change the circuit on a large scale, realize by artifical to automated management's upgrading.
Drawings
Fig. 1 is a layout diagram of a parking space detection system of the present invention on a common parking space;
fig. 2 is a layout view of the parking space detection system of the present invention on a side parking space;
FIG. 3 is a schematic view of the internal structure of the test strip of the present invention;
fig. 4 is a schematic structural diagram of the signal transmission device of the present invention;
fig. 5 is a circuit diagram of the voltage-reducing rectification circuit of the present invention;
FIG. 6 is a schematic diagram of the operation of the buzzer of the present invention;
fig. 7 is a schematic diagram of the parking space detection method of the present invention.
In the figure: 10-a test strip; 11-a protective strip; 12-a piezoelectric patch; 20-signal transmission means; 21-a single chip microcomputer; 22-a storage battery; 23-a protective shell; 24-an output pin; 25-USB interface; 26-a power interface; and (6) parking space.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1, a parking space detection system includes: detection means, signal transmission means 20 and a terminal processor (not shown). The detection device is arranged in the middle of one side of the parking space 30, so that the vehicle is prevented from being in error contact with the monitoring device when the position of the vehicle is adjusted in the parking space 30. The detection device comprises 2 detection strips 10, the extension directions of the 2 detection strips 10 are perpendicular to the extension direction of the parking space 30, the 2 detection strips 10 are arranged longitudinally and at intervals along the extension direction of the parking space 30, and when a vehicle enters the parking space 30, the vehicle sequentially passes through the 2 detection strips 10, so that signals detected by the 2 detection strips 10 have a sequence. Signal transmission means 20 are provided adjacent to the test strip 10, the signal transmission means 20 being connected to the test strip and the terminal processor, respectively. In the present embodiment, the parking space 30 is a common parking space; the number of test strips 10 may also be 3, 4, 5, etc. In other embodiments of the present invention, the parking space 30 may also be a side parking space, referring to fig. 2, and the detecting device is close to the side with the obstacle.
Referring to fig. 3, the test strip 10 includes a protection strip 11 and a plurality of piezoelectric patches 12. The piezoelectric patches 12 are arranged inside the protective strip 11 and are arranged at intervals in a straight line along the extending direction of the protective strip 11, and because the width of a common tire acting on the bottom surface is 180mm, the distance between two adjacent piezoelectric patches 12 is 180mm, so that an effective signal can be generated when a vehicle passes through, and the detection accuracy is ensured. The piezoelectric patches 12 in the same guard bar 11 are electrically connected in parallel.
In the present embodiment, the model and parameters of the piezoelectric sheet 12 are shown in table 1.
TABLE 1
Referring to fig. 4, the signal transmission device 20 includes a protective shell 23. The protective shell 23 is fixedly provided with a singlechip 21, a storage battery 22 and a buzzer. The single chip microcomputer 21 is electrically connected with the piezoelectric plate 12 through a voltage reduction rectification circuit (shown in fig. 5), so that the signal transmission quality is improved. The storage battery 22 and the buzzer are respectively electrically connected with the singlechip 21 and provide electric energy for the singlechip 21. The singlechip 21 is in wireless communication connection with the terminal processor. In this embodiment, the model of the single chip microcomputer 21 is ESP8266, and the ESP8266 has a wireless WIFI module, so that remote transmission of data can be realized; the battery 22 is a small-sized 3V battery.
Referring to fig. 5, the voltage drop rectifying circuit includes diodes D1, D2, D3, D4, D5, capacitors C1, C2, C3, C4, and C5, a voltage regulator chip, an inductor L1, and a resistor R. In this embodiment, the model number of the voltage stabilization chip is 7805.
The output end of the diode D1 is connected with the input end of the diode D2, the output end of the diode D2 is connected with the output end of the diode D4, the input end of the diode D4 is connected with the output end of the diode D3, and the input end of the diode D3 is connected with the input end of the diode D1, so that a bridge rectifier circuit is formed among the diodes D1, D2, D3 and D4.
The junction of the output terminal of the diode D1 and the input terminal of the diode D2, and the junction of the input terminal of the diode D4 and the output terminal of the diode D3 are electrically connected to the piezoelectric sheet 12, respectively.
The connection between the output end of the diode D2 and the output end of the diode D4 is connected to one end of each of the capacitors C1, C2, C3, C4 and C5 and the input end of the diode D5, and the connection between the input end of the diode D3 and the input end of the diode D1 is connected to the other end of each of the capacitors C1, C2, C3, C4 and C5 and the output end of the diode D5, so that the primary diodes D5 of the capacitors C1, C2, C3, C4 and C5 are connected in parallel. The connection between the output end of the diode D2 and the output end of the diode D4 and the connection between the input end of the diode D3 and the input end of the diode D1 are also respectively connected with the single chip microcomputer 21.
Two ends of the voltage stabilizing chip are respectively connected with the capacitor C2 and the capacitor C3, and are also connected with the connection part of the output end of the diode D2 and the output end of the diode D4. The two ends of the inductor L1 are connected to the input terminals of the capacitor C5 and the diode D5, respectively, and also connected to the junction of the output terminal of the diode D2 and the output terminal of the diode D4. A resistor R is connected in series with the diode D5 and a resistor is provided at the input of the diode D5.
Referring to fig. 6, the buzzer operating circuit includes a pull-down resistor 10K, a triode, and a speaker. The pull-down resistor R is connected with a pin of the triode b, a pin of the triode e is connected with a direct current power supply VCC, a pin of the triode c is connected with a line of the loudspeaker 1, and a line of the loudspeaker 2 is grounded.
In this example, when it is determined that the protective shell device is crushed or the piezoelectric sheet is damaged due to long-term compression, the single chip microcomputer inputs a detection signal to the triode, and the triode drives the loudspeaker to give an alarm to remind that the parking space detection device is in a damaged state.
Referring to fig. 7, a detection method based on the parking space detection system includes:
(1) the terminal processor detects whether the detection strip 10 on the parking space 30 generates an electric signal;
(2) when detecting that the detection strip 10 on the parking space 30 does not generate an electric signal, no vehicle passes through the parking space 30;
(3) when detecting that the detection strip 10 on the parking space 30 generates an electric signal, the terminal processor compares the electric signal with a set value: if the parking space is within the set value range, determining that a vehicle passes through the parking space 30; if the parking space is lower than the set value, determining that no vehicle passes through the parking space 30; if the vehicle speed is higher than the set value, determining that the wheels are pressed on the detection strip 10 for a long time due to serious overload or nonstandard parking of the vehicle, and controlling the buzzer to send out a prompt signal by the singlechip 21;
(4) the terminal processor judges whether the received electrical signals are generated from a plurality of detection strips 10 in sequence;
if not, determining that no vehicle enters or exits the parking space 30;
if yes, determining that the vehicle enters or exits the parking space 30, and determining the following conditions:
s1: if the plurality of detection strips 10 sequentially generate electric signals along the direction from the front end of the parking space to the tail end of the parking space, the vehicle is determined to drive in;
s2, if the plurality of detection strips 10 generate electric signals in sequence along the direction from the tail end of the parking space to the front end of the parking space, the vehicle is determined to run out.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The utility model provides a parking stall detection system which characterized in that includes: a detection device, a signal transmission device (20) and a terminal processor; the detection device comprises a plurality of detection strips (10) arranged on the ground on one side of the parking space, the extension directions of the detection strips (10) are all vertical to the extension direction of the parking space, and the detection strips (10) are arranged at intervals along the extension direction of the parking space; the detection strip (10) comprises a protection strip (11) and a piezoelectric sheet (12) arranged inside the protection strip (11); the piezoelectric sheets (12) are arranged at intervals along the extension direction of the protection strip (11) and are connected in parallel through a conducting wire; the signal transmission device (20) is respectively connected with the piezoelectric sheet (12) and the terminal processor.
2. The parking space detection system according to claim 1, wherein the signal transmission device (20) comprises a single chip microcomputer (21), and a storage battery (22) and a buzzer which are electrically connected with the single chip microcomputer (21); the single chip microcomputer (21) is electrically connected with the piezoelectric plate (12) through a voltage reduction rectification circuit, and the single chip microcomputer (21) is in wireless communication connection with the terminal processor.
3. The parking space detection system according to claim 2, wherein the signal transmission device further comprises a protective shell (23), and the protective shell (23) is arranged on the parking space ground close to the detection device; the single chip microcomputer (21), the storage battery (22) and the buzzer are arranged in the protective shell (23) respectively.
4. The parking space detection system according to claim 3, wherein an output pin (24) and a USB interface (25) which are respectively connected with the single chip microcomputer (21) are arranged on the side wall of the protective shell (23); and a power supply interface (26) connected with the storage battery (22) is further arranged on the side wall of the protective shell (23).
5. The parking space detection system according to claim 4, wherein the single chip microcomputer (21) is of the type ESP 8266.
6. The parking space detection system according to any one of claims 1 to 5, wherein a waterproof layer is arranged on the surface of the protection bar (11).
7. The parking space detection system according to claim 6, wherein the protection bar (11) is made of foam.
8. The parking space detection system according to claim 7, wherein the distance between adjacent protective strips (11) is 0.5 m; the distance between adjacent piezoelectric sheets (12) along the extension direction of the protection strip (11) is not more than 180 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921149148.6U CN210324599U (en) | 2019-07-22 | 2019-07-22 | Parking space detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921149148.6U CN210324599U (en) | 2019-07-22 | 2019-07-22 | Parking space detection system |
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| CN210324599U true CN210324599U (en) | 2020-04-14 |
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| CN201921149148.6U Active CN210324599U (en) | 2019-07-22 | 2019-07-22 | Parking space detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246369A (en) * | 2019-07-22 | 2019-09-17 | 西南交通大学 | A kind of parking stall measure system and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110246369A (en) * | 2019-07-22 | 2019-09-17 | 西南交通大学 | A kind of parking stall measure system and detection method |
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