Foreword: With the rapid development of China's economy, the living standards continue to increase, the ownership of family vehicles and social vehicles is constantly growing, and the construction of parking lots has become an indispensable part of most architectural projects. And a parking lot can only save manpower, improve the utilization of parking space, and mitigate the contradiction between nervous supply and demand in social parking. This system uses the H01ZB module of Hazu Company and the PC2ZB module to form a wireless ZigBee network and touch screen for communication. On the basis of the H01ZB wireless module on the resending mechanism of the ZigBee protocol itself, the application layer adds a disclosure mechanism on the application layer. It has greatly improved the stability of communication, and there is no adverse situation such as communication interruption during use, and it provides convenience to the owner's fast parking.
First, control requirements
Control schematic
1. Use the LED monochrome display in the garage door to display the number of remaining parking spaces; there is still a parking space, the entrance gate can open the door to make the vehicle to park;
2. Automatically collect the vehicle into the garage state, obtain the card number in the form of credit card to enter the parking lot and guide the user to quickly find the parking space, reduce the user's parking time;
3. In the user's parking area, in order to prevent chaos, set the ultrasonic parking space sensor above the parking space, and detect whether the vehicle is changing;
4. Use the user's vehicle to use the credit card form. Automatically calculate the parking time according to the admission time and the output time. Automatic calculation according to the parking time and the charging standard automatically calculates the fee, and the fee will be left behind.
Second, the control plan
2.1 Composition of the hardware system
In the control system of this article, the signal collected in the system is a logical switching signal, and the number of input points increases with the increase of the number of parking lot. This requires PLC to have powerful point expansion capabilities, while the sea will expand 7 modules for PLC, and most of the expansion modules also support remote functions, and can read the corresponding point of information through the Modbus protocol, and the small machine has a medium model The extension ability, there is no problem in response to the general parking lot control system. In addition, the PLC should communicate with the LED monochrome display, send the remaining parking space information, and the PLC also collects the card number information. To implement the monitoring of the card number, the card number information will be transmitted, communication, communication, so the information within the system Communication frequently, requires PLC to have strong communication capabilities. The communication is precisely the advantages of the sea PLC, easy to use, a communication command to complete complex communication functions, which can greatly reduce the system's debugging time, improve efficiency; consider the above system requirements, select the sea is PLC Do the controller for this control system.
2.2 Controller and module selection and use
The selection of the PLC host generally selects the H series host due to the premise of satisfying the requirements, the system is considering a larger register element. The H series host comes with RS232 and RS485 communication ports. The functions of each communication port can be programmed and connected, and they can be used as master or slave. The reader and PLC use the RS232 communication port between the reader and the PLC, and the LED monochrome display uses the RS485 on the host to communicate.
In order for the user to save the user, it is deliberately placed on the card, and the H01ZB module and the PC2ZB module implement wireless communication between the PLC and the touch screen are implemented. The H01ZB module is directly hanging behind the host; the PC2ZB module is connected to the touch screen, and the picture below is a network diagram:
Network diagram
After normal communication, the user has a clear understanding of the layout map of the parking lot through the touch screen, and the screen of the touch screen will be displayed back and forth in the parking lot overall layout and the parking space, guiding the user to speed up the parking. area. The following figure is the touch screen display screen of one of the regions:
Touch screen area display screen
Third, some procedures
Third, systematic advantages
1. Powerful communication and simulation functions
The sea has a lot of functional innovative and convenient instructions for PLC, and there is only one communication command to complete complex communication functions regardless of the communication instructions. It is the first PLC programming software in China with the inner emulator, fully realizing the simulation operation of PLC. Whether it is a normal procedure, or the communication simulation program can be simulated. Greatly reduce the on-site debugging time, reduce the difficulty of adjustment, and improve debugging efficiency.
2, wireless networking is simple and convenient, communication stability
It is easy to use the sea for the company's H01ZB module and the PC2ZB module to make a simple and convenient network. No need to configure the ZigBee parameter, simply use the DIP dial switch that comes with the module. Communication has a relatively high stability, and the disconnection mechanism on the application layer is added based on the retransmission mechanism of the ZigBee protocol itself.
3, instead of manpower, improve efficiency, save costs
The parking lot control system improves the work efficiency of modern human, and has greatly saved human material, reducing the company's operating costs; standardizing parking order, avoiding chaos, making the entire management system more safe and reliable.
4, visualization interface, let users reduce parking time
When the queue is taking the card, the user can see the area layout of the entire parking lot on the touch screen and see the simplest route to the area that is the most parking space, reducing the user's parking time, although only a little time, but the user experience Different from this, humanized design always attracts more users. , Reading the full text, the technology area
Sea is PLC + Wireless ZigBee Module H01ZB, Application Design in Sewage Treatment Process
Sea is a PLC, H01ZB module and a PC2ZB module, in the parking lot control system
Weixin CTSC-200 Series PLC and CoPanel Touch Screen Application in Air-Cooling Cold Water Water Units
Application Design of CO-Trust Series PLC in Automatic Fire Water Supply System
Application Design of Sea for C16S2R Series PLC in JDWT Quantification Packaging Control System
Our other product:
