Design Scheme of Intelligent Parking Lot System - Tigerwong

Good electrostatic resistance, lightning surge resistance, electrical transient group pulse resistance and very low EMI conduction disturbance of the parking lot system; It has industrial environmental adaptability of - 40 85 . It provides a practical guarantee for the reliability, safety and stability of the whole system. All equipment in the parking lot has passed the actual simulation test of harsh application conditions in Zhiyuan electronic EMC laboratory, safety regulation laboratory, environmental laboratory, etc. Each discrete device can meet the minimum industrial level III specification of EMC. Power off, manual fast operation, automatic gate support motor clutch. Automatic reset for incoming calls. Return function of brake lever in case of resistance. Remote control by wire optional; Optional low temperature automatic heating circuit. It can be divided into contact and non-contact schemes.

Support the operation of mifar card, CPU card and contact Sam card. Users do not need to know the underlying register, and can adopt the zlg600 series card reading module scheme. Zlg600a series RFID reader module is a 13.56 MHz reader module developed based on Fudan micro platform. This series complies with ISO 14443 and ISO 7816. Several simple serial port commands can realize the RFID card reading and writing function. It can easily and quickly integrate contact / non-contact IC card technology into products.

For contactless card reading and issuing scheme within 2m 50m from the vehicle to the road gate. The non-contact card reading is realized through the Bluetooth wireless module of the control unit. The integrated card issuing device of the gateway can realize the supporting functions such as upgrading, recharging, querying and issuing parking cards. Expanding and excavating urban parking resources and how to solve rural vehicle traffic and vehicle parking are two important issues to solve rural traffic problems. Solving the parking problem and establishing an intelligent traffic management system combining static parking and dynamic traffic is a positive trend of contemporary traffic management.

At present, all provinces and cities are also accelerating the intelligent transformation of roadside occupied parking and commercial parking lots, realizing the intelligent management of parking spaces in parking lots and effectively improving the efficiency of parking space management dynamically The detection and control of parking space in the parking lot can also be realized through wired and wireless schemes. Detect vehicle position. The information can be connected to the control unit through RS485 or canbu bus for central control and management. Through the parking space geomagnetic sensor. Indicates the current vehicle position and traffic status. There are indicator lights at the intersection of parking spaces.

The wiring of geomagnetic parking space detector and intelligent parking space lock is very difficult in information transmission, which is not used in the parking space intelligent management system. Wireless transmission is the dominant solution. Even at present, many wired ultrasonic parking space detectors are gradually replaced by wireless to realize system normalization. In terms of wireless transmission, Lora scheme has more advantages in this field: it can effectively solve the problems of outdoor parking lot construction wiring, convenient device maintenance and wireless communication. It has the advantages of simple device and maintenance, construction free wiring, saving construction cost, reducing construction cycle and so on; It has - 148dbm receiving sensitivity and Lora wireless spread spectrum technology.

The communication distance can reach 8km, which greatly reduces the number of gateways and construction cost; In practical application, Lora adopts ISM band wireless communication technology. Geomagnetic / parking lock installation method and vehicle chassis will have a strong interference effect on wireless communication. It integrates digital spread spectrum, digital signal processing and forward error correction coding to effectively ensure the stability, reliability and anti-interference ability of wireless communication. Powered by battery, the service life can be up to 3 5 years. Ultra low power design. 1.1.5 license plate detection and recognition realizes license plate information recognition, etc. IP camera can be selected for license plate detection and recognition, and the control unit provides network interface to communicate with it.

To ensure the recognition of license plate in harsh environment. The control unit controls the spot light replenishment through the relay isolation do port. 1.1.6 split screen control display scheme can be adopted for display information control. The parking lot has more information to show the demand. As shown in Figure 16, RS485 interface control is adopted. Realize the feedback display of vehicle entry welcome language and license plate information.LED dot matrix screen can be used at the gate of parking lot. It can play 1080p video and HDMI display. Free parking spaces, occupied parking spaces, available parking spaces and corresponding guidance information are displayed on the vertical or hanging screen in the parking lot. Advertisements can also be played. Support USB touch screen. Display card swiping information, vehicle owner and other information, expense record and deduction information, etc. LVD display and operation man-machine interface can be used at the card reading and issuing place. Optional power amplifier scheme and recording playback scheme.

Realize voice prompt and intercom, and the control unit provides I2 interface and basic voice processing chip. Broadcast billing notice, etc. 1.1.7 the parking space guidance control realizes the identification and detection of vehicles at the gate. Ultrasonic, infrared, ground sensor, proximity coil and other sensors can be used to isolate the digital input Di and collect it to the controller through the optocoupler of the control unit. The number of free parking spaces, parking conditions of free parking spaces, parking conditions of fixed parking spaces, available free parking space information, etc. in the parking lot can be collected by the geomagnetic sensor of each parking space and communicated with the RS485 isolation port of the control unit through RS485 bus. After being processed by the control unit, it is displayed on the HDMI guidance screen in the parking lot in the form of graphical interface and updated in real time.

In the design, a video parking space detection terminal and a parking space status indicator are combined into one, and the "video parking space guidance system" adopts image processing technology. As front-end acquisition and detection equipment; Two parking spaces are a group, sharing an area video controller; The regional video controller identifies the collected parking space information and vehicle information, drives the parking space indicator to switch to the corresponding color in real time, uploads the license plate photos and parking space information to the application server through the network switch, updates the electronic map and saves it. Each parking lot is equipped with a data server to manage the license plate image of the parking lot; A guide screen is set at the channel to prompt the empty parking spaces for the driver to find the empty parking spaces. 1.2.1 the analog interface of security detection surveillance camera can communicate well with it through Zhiyuan electronic camera adapter board. The parking lot system control unit supports 32g memory card expansion, and the control unit provides Mipi CSI camera interface. The core board controller of quad core version supports sata-2 hard disk expansion.

Large capacity storage of monitoring video and other information can be realized. It can collect four analog camera signals in time-sharing. Camera demo is an accessory board developed by Guangzhou Zhiyuan electronics. The board adopts adv7180 analog to digital decoding scheme. It is converted into digital signal and connected to CPU for processing through CSI interface.

It is mainly used for CSI camera function of industrial control motherboard. Figure 21 camera demo camera extended version 1.2.2 when the CPU of the alarm system receives the danger information, it triggers to start the alarm system, such as alarm indicator and alarm bell. In addition, the control unit provides the recording and playing function of I2 interface to realize voice alarm prompt, and the central control unit provides the do interface for relay isolation. Remind habitual personnel in case of accident. After the control unit collects the hazard information, it is in case of sudden safety accident in the parking lot.

Quickly back up the real-time processed information to storage through USB dsata, or network backup. The standard Longshang u9501p4g wireless module reports the hazard information to the parking lot management office at the first time. 1.2.3 communication management adopts the control unit of m6708-t core board to realize wired communication: such as network, rs232rs485cambudi / do and other forms of communication. Zhiyuan electronic iot-3968 can be configured as its gateway equipment. Using the two-way minipci interface design, ZLG Zhiyuan electronics has launched an intelligent wireless gateway iot-3968l for the industrial Internet field, with ARM9 as the core. It also provides a variety of optional wireless interface modules (minipci interface design, including wi fizigbeloragpr2g / 3G / 4G, etc.) to facilitate customers to quickly build intelligent Internet of things gateway products suitable for their own industry. Figure 22iot-3968l intelligent wireless gateway.

The control unit can also realize various forms of wireless communication: for example, Bluetooth (patch stamp hole) 4G minipci WiFi minipci minipci zigbeminipi PCI optional) gprminipi PCI optional) Beidou / GP patch stamp hole optional) can realize remote control of various devices, the same. Identify and monitor vehicle parking spaces, centralized management and other functions. Provide a complete application integration scheme based on IEEE 802.15.4 specification ism2.4-2.5ghz band. Zm516x series zigbe wireless module is a low-power and high-performance zigbe module developed by Guangzhou Zhiyuan electronics based on nxpjn5168 chip. It can be quickly applied to industrial control, industrial data acquisition, agricultural control, personnel positioning in mining areas, smart home, smart remote control and other occasions. Security management of user information.

The management system has done a good job in user classification and authority query, and the user management system software can realize information storage and encryption. Realize user information classification. ZLG Zhiyuan electronics also provides customers with various assistance services in antenna layout. The wireless transmission of parking space intelligent management system nodes (nodes include wireless parking geomagnetism, wireless ultrasonic sensor and wireless parking lock) adopts Lora wireless module zm470sx-m / zm433sx-m. due to the particularity of the application environment of the above products. Provide effective guarantee for customers to shorten the R & D cycle and improve the overall competitiveness of products. Background operation permission and other use support.

In addition, the management system also sets up management permissions for administrators. 1.3.2 the billing system software supports multiple billing modes and billing management. It can realize the standardization of charging. The bill printing function of sentry box or intelligent card reader is controlled through serial port. The control unit can be equipped with ZLG Zhiyuan electronic micro printer. Support wide pressure printing, zytp58-ii Guangzhou zhouligong MCU Technology Co., Ltd. launched a thermal micro printing control module.This module of parking lot system is compatible with 58mm common movement. Over temperature protection, paper shortage detection and other functions. Serial port command control, simple operation, shorten user development cycle, the first choice for thermal printer movement drive. Reduce card loss: the temporary parking user presses the key at the entrance, and the system supports paper ticket through the printer. The system automatically prints the ticket, and the parking person can carry out parking positioning, reverse query and payment with the paper ticket, and supports automatic recovery at the entrance.

It also provides information such as the lack of collection and printing paper and the lack of temporary card stock. 1.4 intelligent parking lot - background data management system 1.4.1 the host server of the data center establishes a data storage management center in the background. It can realize the communication and interaction of various objects at all levels, and the firmware and application sequence support information storage and operation. Authority management of the whole system. The data center host system and its subsystems have maintainability, upgradeability and environmental reliability. Provide data support to customers in real time through app or WeChat official account.

The powerful background data management system can back up a large amount of data generated in use in real time. 1.5 intelligent parking lot - integrated system solution has excellent advantages in integrating parking lot system resources. In the future, the full video intelligent parking lot will be used as a comprehensive solution to parking problems. It realizes a series of complete fully automatic functions, such as rapid vehicle entry, rapid parking, and rapid vehicle search and rapid payment when the owner returns to the parking lot. So as to effectively solve the social problems such as slow parking, slow payment, difficult parking and difficult car search caused by large traffic flow in parking lots, including shopping malls, airports and other public places, and optimize the resources of parking lots. 1.5.1 product failure analysis product safety has been more and more favored by users. On the premise of meeting the basic functional requirements, for the majority of car owners.

Gradually pay attention to the high reliability, high maintainability and emergency plan of the system. Product quality is the lifeline of an enterprise. Failure analysis can not only improve quality,.