CN102387610A - Zigbee coordinator system of infrared standard target source equipment - Google Patents

Abstract

The present invention mainly designs the Zigbee coordinator for network management based on the Zigbee infrared heat source module, and designs the data transmission format of the coordinator system, the data cache mechanism, and the long-distance serial port for data interaction with the upper host for the temperature control number mode of the heat source module. Communication Interface. The design uses Freescale's MC13224 chip as the main chip of the coordinator. The hardware system mainly considers the anti-interference ability of the coordinator and the host for long-distance communication, and uses a relay RS422 to RS232 serial port converter. The hardware system uses a 5V power supply, and the AMS1117 is used to convert the 3.3V voltage for the chip to work. The MAX3488 chip converts the TTL serial data of the chip communication into the RS422 data format. The specific implementation of the system is completed by the coordinator software. The software mainly includes serial port data format, Zigbee data transmission format, and double buffer data mechanism. The device can realize good long-distance Zibgee infrared temperature control data transmission from the host computer to the terminal.

Description

Infrared standard target source equipment Zigbee coordinator system

technical field

The invention relates to the field of infrared image simulation, is applied to a coordinator based on Zigbee infrared standard target sources, and mainly completes the coding and transmission of infrared target source control signals. the

Background technique

When the control system of large-scale infrared target source generated by splicing heat source modules adopts wireless network control, it can improve the modularization and integration level of the system, make the heat source modules have good interchangeability, and effectively reduce the number of heat source modules. The complexity of the system in terms of erection and maintenance. For the new type of large-scale infrared outdoor simulation equipment, the wireless control mode enables the infrared simulation target to be directly calibrated at the optical measurement equipment of the infrared monitoring equipment during long-distance testing, further improving the performance of the infrared equipment. the

ZigBee is an emerging short-distance wireless technology. Its biggest feature is low power consumption and networking, especially the networking function with routing. In theory, the communication area covered by ZigBee can be expanded infinitely. The self-organizing network communication method adopted by ZigBee can realize random selection of heat source modules and install them in any spatial position, which is especially important for the installation and maintenance of large-scale infrared standard target source equipment spliced by a large number of heat source modules. the

The current ZigBee module includes all peripheral circuits and a complete protocol stack, and can be put into use immediately. It can be designed on the hardware with compact structure, small size, patch pad, built-in Chip or external SMA antenna. The communication distance ranges from 100 meters to 1200 meters, and it also includes ADC, DAC, comparator, multiple IO, I2C and other interfaces to connect with the user's products. The software includes a complete ZigBee protocol stack, and has its own configuration tool on the PC. It uses the serial port to communicate with user products, and can configure the network topology parameters such as transmit power and channel of the module. It is simple and fast to use. the

At present, ZigBee modules are widely used in the automatic control of various monitors and sensors in industrial control. It has broad application prospects, which makes the large-scale infrared target source equipment using Zigbee wireless technology have potential in maintenance and update in the future. the

As the management device of Zigbee network system, Zigbee coordinator is an indispensable part of large-scale infrared target source equipment based on Zigbee wireless technology, and it is responsible for the intermediate link between Zigbee terminal devices and host computer data interaction. Considering the characteristics of the system infrared data and the Zigbee data structure, the Zigbee coordinator should be independently designed. the

Contents of the invention

The present invention mainly designs the Zigbee coordinator based on the network management of the Zigbee infrared heat source module. Aiming at the temperature control data mode of the heat source module, the data transmission format of the coordinator system, the data cache mechanism, and the long-distance data interaction with the host computer are designed. Serial communication interface. The design content includes the hardware structure and software structure of the coordinator. the

The design uses Freescale's MC13224 chip as the main chip of the coordinator. The hardware system mainly considers the anti-interference ability of the coordinator and the upper-level long-distance communication, and uses a relay RS422 to RS232 serial port converter. The network communication structure of large-scale infrared target source equipment is shown in Figure 1, and the corresponding coordinator circuit is designed as Figure 2. The system uses a 5V power supply, which is converted into a 3.3V voltage for chip operation by AMS1117, and the MAX3488 chip communicates with TTL serial The data is converted to RS422 data format. The specific implementation of the system is completed by the coordinator software. The software mainly includes serial port data format, Zigbee data transmission format, and double buffer data mechanism. the

Description of drawings

Figure 1 System communication control structure diagram

Figure 2 MC13224 coordinator circuit diagram

Figure 3 MC13224 module pin definition

Detailed ways

Using the hardware configuration as shown in Figure 2, the specific implementation part of the code is as follows:

1) The Zigbee data buffer structure is defined as follows:

2) The serial data buffer structure is defined as follows

3) The serial port data cache mechanism is implemented as follows:

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Claims (2)

1. one kind infrared standard target source device Zigbee telegon system design is characterized in that: large-scale infrared target source Zigbee telegon.

2. infrared standard target source device Zigbee telegon according to claim 1 system design is characterized in that: two data cached mechanism of Zigbee infrared data and Zigbee infrared data structure.

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