CN204463467U - A laser parking space detection system - Google Patents

Abstract

The utility model discloses a kind of laser type parking site detecting system, belong to intellectual traffic control field, relate to parking stall measure system, comprising: at least one scanning type laser sensor, data transmission module, data analysis module.Scanning type laser sensor is suspended on above tested parking stall, form the fan laser plane of scanning motion, tested parking stall is positioned at the scanning area of scanning type laser sensor, scanning type laser sensor obtains the distance of detected parking stall to scanning type laser sensor, distance value is transferred to data analysis module with corresponding laser scanning angle value by data transmission module, data analysis module is according to the change of range data and laser scanning angle value, judge whether parking stall parks cars, the storing cycle situation of Real-time Obtaining parking stall.

Description

A laser parking space detection system

technical field

The utility model relates to the field of intelligent traffic control, in particular to the field of detection of multiple parking spaces, and is suitable for information control of parking spaces in parking lots, parking guidance and other related systems.

Background technique

With the acceleration of my country's urbanization process, the number of vehicles continues to increase, and the problems of difficult parking and random parking are common. When the number of vehicles is not equal to the capacity of the parking lot, it is particularly important to detect parking space information in real time and realize intelligent management of the parking lot. .

The existing parking space detection methods are as follows: 1. Geomagnetic induction coil. The geomagnetic induction coil is the most widely used one in the current parking space detection technology. The technology is relatively mature, but this method belongs to the single parking space detection method, and the installation method is Buried type, the damage to the road surface is relatively large, and it is not easy to install and maintain; 2 Video parking space detection, multi-parking space detection method, but the detection results are easily affected by light, weather and other reasons, resulting in inaccurate test results; 3 Ultrasonic parking space detection, can be reliable Detect parking space information, but it is greatly affected by the environment.

Utility model content

(1) Technical problems to be solved

The technical problem to be solved by the utility model is: to realize accurate analysis of the information of multiple parking spaces in the parking lot, so as to realize the intelligent management of the parking lot.

(2) Technical solution

In order to solve the above technical problems, the utility model provides a laser parking space detection system, which includes: at least one scanning laser sensor, a data transmission module, and a data analysis module.

Wherein, the scanning laser sensor is used to emit a laser beam to form a fan-shaped scanning plane, and convert the reflected optical signal into an electrical signal through the receiving system, and obtain the corresponding distance and scanning angle information through calculation;

Wherein, the data transmission module is used to transmit the distance value output by the scanning laser sensor and the corresponding scanning angle information to the data analysis module;

Wherein, the data analysis module is used for data analysis, receives the distance value and the laser scanning angle information transmitted by the data transmission module, and judges whether a vehicle is parked on the corresponding parking space according to the change of the distance value and the laser scanning angle information, and obtains in real time The parking situation of the vehicle in the parking space.

Wherein, the straight line formed by the intersection of the fan-shaped scanning plane of the scanning laser sensor and the ground covers the multiple measured parking spaces, and the straight line is located within ±1 meter from the middle positions of the multiple measured parking spaces.

Wherein, the scanning laser sensor is suspended above the measured parking spaces, and the suspension position and angle are determined by the number of measured parking spaces and the space size of the parking lot.

Wherein, the laser parking space detection system can analyze the height and width of the vehicles parked in the parking space.

Wherein, the multi-parking laser detection device system can be used in a vehicle queuing detection system.

(3) Beneficial effects

The utility model utilizes the laser scanning ranging technology, by analyzing the scanning angle of the scanning laser sensor and the corresponding scanning distance, according to the change of the distance from the parking space to the scanning laser sensor, it is judged whether there is a car in the parking space.

The assembly mode of the utility model is a suspension type, and the installation and maintenance are convenient and simple.

The detection result of the utility model is stable and reliable, and is not affected by weather, line of sight and surrounding environment.

Description of drawings

Fig. 1 is a schematic diagram of a laser parking space detection system;

Figure 2 is a schematic diagram of a laser parking space detection system applied to a roadside parking lot;

Figure 3 is a schematic diagram of a laser parking space detection system applied to a non-shaped parking lot.

In the figure, 101 is a scanning laser sensor; 102 is a data transmission module; 103 is a data analysis module; 201 is the middle position of multiple parking spaces to be measured.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but are not used to limit the protection scope of the utility model.

Example 1

In this embodiment, one scanning laser sensor 101 is used as an example to scan 5 parking spaces to illustrate the utility model, but the protection scope of the utility model is not limited. The utility model discloses a laser parking space detection system. Referring to FIG. 1 , the system includes: a scanning laser sensor 101 , a data transmission module 102 and a data analysis module 103 . The straight line formed by the intersection of the fan-shaped scanning plane of the scanning laser sensor 101 and the ground is located at the middle position 201 of the multiple parking spaces to be measured; the scanning laser sensor 101 is installed in a suspended manner, and the installation position is above the middle parking space of 5 parking spaces; open-air parking When used in a parking lot, calculate the installation height h according to the required scanning range, that is, the length of the straight line formed by the intersection of the fan-shaped scanning plane of the scanning laser sensor 101 and the ground within 5 parking spaces; If the height H of the parking lot is greater than or equal to the installation height h, it can be installed and used normally; if the height H of the parking lot is less than the installation height h, the maximum installation height is H. If the horizontal space of the parking lot is sufficient at this time, it can be Move the installation position horizontally and adjust the installation angle of the scanning laser sensor 101 at the same time to realize the scanning of 5 parking spaces. If the space in the horizontal direction is limited, the number of parking spaces that can be detected at this time is determined by the parking lot height H, the movable distance in the horizontal direction and a single parking space Width determines.

When the vehicle enters the measured parking space and the front or rear of the vehicle touches the scanning plane of the scanning laser sensor 101, the distance from the parking space to the scanning laser sensor 101 changes, and the distance value is stable after the vehicle stops. The scanning angle of the scanning laser sensor 101 and the corresponding distance value are transmitted in real time through the data transmission module 102. The data transmission module 102 includes all methods for data transmission. Take the switch as an example, but does not limit the protection scope of the present invention. The data analysis module 103, taking the embedded system as an example, but does not limit the scope of protection of the present utility model, judges the state of the parking space according to the changed distance value and the corresponding scanning angle information, and can calculate the height and width information of the vehicle at the same time . Referring to FIG. 1 , the data analysis module 103 can analyze that parking spaces 2 and 5 have cars, and parking spaces 1, 3 and 4 are free.

Example 2

Present embodiment is applied to roadside parking lot with a kind of laser type parking space detection system that comprises two scanning laser sensors, with reference to Fig. 2, non-shaped parking lot, with reference to Fig. 3, illustrate the utility model as an example, but The protection scope of the present invention is not limited, and the modules 101, 102, and 103 included in Fig. 2 and Fig. 3 are consistent with those described in Fig. 1 .

The laser parking space detection system has different installation methods for parking lots with different structures. When applied to roadside parking lots, in order not to affect road traffic, the scanning laser sensor 101 is installed on the side close to the roadside. Select the top of the middle parking space of a plurality of measured parking spaces, with reference to Fig. 2, the installation height of the roadside parking lot is not limited, and the installation position calculation method is relatively simple, with reference to embodiment 1, the laser beams sent by the two scanning laser sensors 101 When intersecting with each other, it will occasionally affect the data in the intersecting area. The time level is microsecond level and does not affect the normal distance measurement. If the requirements are strict, the installation angle of the two scanning laser sensors 101 can be adjusted during installation to make the two scanning laser sensors 101 The scanning planes of the type laser sensor 101 differ by a certain angle. When applied to a non-shaped parking lot, the installation position of the two scanning laser sensors 101 is above the middle parking spaces of the plurality of measured parking spaces, and they are installed on the back. Referring to FIG. 3 , the installation position calculation method refers to Embodiment 1.

In the described a kind of laser type parking space detection system, the data transmission module 102 that the data information of two scanning laser sensors 101 all passes is sent to the data analysis module 103, and the data analysis module 103 analyzes the state of each parking space to be measured, obtains in real time The state of the measured parking space corresponding to the scanning area of the two scanning laser sensors 101 facilitates intelligent management of the parking lot.

Claims (2)

1. a laser type parking site detecting system, is characterized in that, by least one scanning type laser sensor, and data transmission module, data analysis module forms:

1) scanning type laser sensor, Emission Lasers light beam, forms sector display plane, converts the light signal be reflected back to electric signal by receiving system, and obtains corresponding distance and scanning angle information;

2) data transmission module, the distance value that transmission scanning type laser sensor exports with corresponding scanning angle information to data analysis module;

3) data analysis module, according to change and the laser scanning angle value of distance value, judges whether parking stall parks cars, the storing cycle situation of Real-time Obtaining parking stall.

2. a kind of laser type parking site detecting system according to claim 1, it is characterized in that the straight line of the sector display plane of described scanning type laser sensor formation crossing with ground covers tested multiple parking stalls, this straight line is positioned between centre position ± 1, tested multiple parking stall meter.