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1. Program overview
The parking space management system is a comprehensive management platform built through computers, network equipment, vehicle perception transmission equipment, customer terminal equipment, etc., which manages parking lot vehicle entry and exit, vehicle flow guidance, parking status information release, and parking fee collection. It uses the wireless geomagnetic vehicle detector as the parking space status collection device, detects the status of the parking space in real time, obtains real-time parking space status information, and publishes dynamic information to the vehicle management department and car owners through the intersection release screen, network or mobile phone APP. Use the corresponding toll system management software to effectively supervise the parking fees charged by toll parking lots.
2. Working principle
The principle of geomagnetic detection is used to detect motor vehicles. In the absence of motor vehicles, the earth’s magnetic field is in a relatively stable state. When a motor vehicle passes by, it will cause a change in the earth’s magnetic field. The wireless geomagnetic vehicle detector detects motor vehicles by analyzing changes in the earth’s magnetic field. The wireless geomagnetic vehicle detector is embedded in the ground and is powered by its own battery. The vehicle information (existence, traffic, speed, vehicle length, occupancy rate and other traffic parameters) detected by the detector is sent wirelessly to the roadside installation Signal receiver, the signal receiver transmits the vehicle information to the application system, etc.
The wireless geomagnetic vehicle detector is buried under the surface of the parking space. Whenever a vehicle is parked, it detects the arrival of the vehicle according to the change of the magnetic field around the vehicle detector. After the signal is stable, the signal is sent to the wireless geomagnetic device installed in the appropriate position. Parking space detector base station. Similarly, when the vehicle leaves, the wireless geomagnetic vehicle detector can also detect this information based on the change in the magnetic field and inform the wireless geomagnetic parking detector base station.
3. Advantages of the show
Xiupai’s parking space management system focuses on organically integrating the Internet of Things technology with other general communication technologies, control technologies, and software technologies. On this basis, rigorous integration and expansion are carried out to make the entire system based on practicability, safety, and scalability.Our greatest advantage is toRFIDTechnology and standardized products are fully utilized in parking space management, reflecting real-time and high-efficiency.
Showpad’s system can be linked with high-definition video to quickly realize positioning and integrated monitoring.
4. System design goals
Advanced and mature technology and equipment ensure the safe, reliable, stable and convenient operation of the system;
Automated design, improve management level and efficiency, and provide high-quality, safe and efficient services;
Economic and reasonable operating costs, saving management expenses, and improving work efficiency and economic benefits;
Reasonable layout, improve the service quality of the system, and shorten the service time;
5. System design basis
※ Parking lot management system—Q/SJS 001-1998—QB/440300L6960-1998
6. Principles of System Design
The overall design of this program is based on advanced, reliable, practical and convenient, and the design follows the following principles:
1. Stability
In order to ensure system stability indicators, mature, stable, and advanced technologies are used in the entire program design to achieve requirements. Reliable innovation is carried out on the basis of mature technology, so that the entire system can operate reliably and has innovative features. The 2.45GHz radio frequency identification technology used in the system, directional antenna area control and distance control technology, data transmission technology, geomagnetic induction technology, video linkage, etc. are relatively more widely used and relatively mature technologies.
2. Real-time
As an information push system, the signal recognition, acquisition, processing, and rapid realization of decision-making of the entire system are very important, which requires software and hardware
The design should take these into full consideration. It is necessary to make full use of the characteristics of 2.4G high speed, large range, large capacity, and good anti-collision performance for design.
3. Accuracy
The real-time occupancy of each parking space needs to be accurately identified, and accurate information is the core of the entire system.
4. Security
2.45GHz wireless radio frequency communication and data transmission process adopt safe encryption algorithm to ensure data security. At the same time, the system has a high real-time alarm response speed, which ensures timely warning and safety prompts. It is also necessary to consider aspects such as system operation specification design, implementability, and safety.
5. Economical
The entire system structure must have a higher cost performance, try to share resources, and lower maintenance costs.
System composition and function introduction
7. System Topology
This program is mainly composed of data collection layer, data management layer, and information release layer.
8. Function description of each layer
8.1.1 Data collection layer
Its main function is to obtain the basic data of the parking space status, that is, to collect and report the car or non-car information of each parking space.
Through the parking status sensing function of the wireless geomagnetic vehicle detector, the real-time parking status data is captured and sent wirelessly to the signal receiver in the nearby area. The signal receiver then transmits the acquired information to the signal receiver via 2.4G wireless radio frequency. The remote signal receiving base station, the signal receiving base station organizes the data and transmits the data to the management server uniformly through RS485, network port or wireless DTU, thereby obtaining the basic data of the parking status. Each vehicle detector, receiver, and receiving base station has a unique ID code. After the management server receives the data, it can match and correspond to the parking space, so the status of each parking space can be displayed accurately.
8.1.2 Data Management
The main function is to organize the data reported by the receiving base station, and perform modular processing and present it through logic algorithms.
8.1.3 Parking space information release layer
The real-time parking status information released by the management center is released to the society through computers, parking information guidance screens, and mobile phone APPs. Before traveling, car owners can quickly and easily find empty parking spaces around their destinations based on the information released.
System functions and features
9. System function introduction
9.1.1 Real-time detection of parking spaces
Using geomagnetic sensor detection method to obtain basic parking status data; using wireless geomagnetic vehicle detectors, receivers and receiver base stations to form a data collection network, the frequency of the vehicle detector to collect samples is milliseconds, thus ensuring the acquired parking status Real-time.
9.1.2 Parking guidance function
The parking space guidance and management system based on the Internet of Things, based on wireless sensor network and Ethernet communication, detects the usage of parking spaces through geomagnetic methods, and transmits this information to LED screens, mobile phones or end-user computers through network equipment or 3G equipment. Parkers can quickly find free parking spaces for parking based on the guidance of the above-mentioned released information. Managers can count the traffic flow in different periods in time, optimize the allocation of parking space resources, and improve the intelligent level of the parking lot.
9.1.3 Data traceability function, data statistics function
Receive the data reported by the base station to the management server, and save it regularly after processing, and provide data support for the traffic supervision unit and the parking lot management department to analyze the traffic data and the orderly and standardized management of the parking lot. When an emergency occurs, by calling the reserved data, it can be used for the purpose of event tracing.
9.1.4 Charge supervision function
In the second half of 2014, “Where did the parking fee go”, as an anti-corruption topic, appeared in different publications from mainstream media. How to effectively increase the supervision of tolls is a key factor to ensure that parking fees are not lost. If you use the traditional method, that is, all man-made implementations, then the loopholes in the process can never be properly resolved.
The parking management system based on the wireless geomagnetic vehicle detector, through the comprehensive processing of the data obtained by the vehicle detector, can be accurate to each parking space, the number of vehicles parked each day, and the duration of each time, and make accurate statistics. The algorithm derives the corresponding chargeable fees. Effectively eliminate management loopholes and ensure the benefits of parking lots or state finances.
9.1.5 System Features
High accuracy: The earth’s magnetic field is basically constant within a few kilometers, but large ferromagnetic objects will cause huge disturbances to the earth’s magnetic field. The influence of time on the geomagnetism will reach a fraction of the intensity of the geomagnetism, so the use of geomagnetic sensors to detect vehicles has extremely high sensitivity.
Installation and maintenance are convenient, no excavation and construction are required, and the road surface is less damaged. If the detector is damaged, you only need to replace it as a whole without checking the circuit.
The geomagnetic sensor uses the change of the earth’s magnetic field when ferromagnetic objects pass through to detect, so it is not affected by the climate.
The two-way high-speed data exchange can be realized between the detector and the receiver, and there is no need to worry about the simultaneous data exchange between each detector and the receiver.
High reliability, working temperature -40℃~85℃, waterproof and shockproof.
High anti-interference: There are no special requirements for various interference sources on site, and the installation is convenient and simple.
There is no need to apply for and pay for the ISM microwave frequency band that is open worldwide.
Ultra-low power consumption: safer and healthier for the human body.
The service life is long, up to more than 5 years.
The investment cost is low, and once the system is applied, it can greatly reduce parking lot management personnel and reduce parking lot operating costs.
9.1.6 Application comparison of similar products
In terms of type, parking lots can be divided into two categories: indoor parking lots and outdoor parking lots.
For indoor parking lots, the current mainstream parking lot detection equipment mainly includes ultrasonic, video, infrared induction, and geomagnetic detectors. Before wireless geomagnetic products were used, ultrasonic and video were the most widely used in practical applications.
The intelligent construction of outdoor parking lots is still in a blank stage. The main reason is that the outdoor environment changes greatly, and installation and wiring are difficult to implement, so it is difficult to effectively apply both ultrasonic and video methods. When wireless geomagnetic equipment has not been adopted, no suitable solution can be found.
However, compared to indoor parking lots, the outdoor space is broader. Therefore, only when outdoor parking lots are intelligently constructed can they be integrated with big data management in a true sense and realize intelligent parking in a true sense.
9.1.7 Comparison of wireless geomagnetic vehicle detector with similar products
91.8 Comparison of products in the same industry
Adopting a single-module, highly integrated design concept, the vehicle detector has the smallest appearance compared to other geomagnetic fields.
The compact appearance structure and professional appearance design make its pressure resistance and structural changes caused by external forces to be minimized.
The communication distance can reach more than 200 meters, and the communication distance of car detectors on the market is generally 30-50 meters. So as to ensure the use in various scenarios.
The professional low-power design ensures that the working life of each vehicle inspection device can be maintained at more than 5 years.
Product Introduction
The wireless geomagnetic vehicle detector is a front-end data acquisition device specially designed for the field of intelligent parking management by Xiupai Technology, which is suitable for parking space status monitoring.
Compared with some traditional collection equipment, its characteristics are: small size, high detection accuracy, easy installation, low power consumption processing, long service life, convenient maintenance and other advantages.
Signal receiver (reader)
2.4G electronic label
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