CN202495038U - ZigBee product development device - Google Patents

Abstract

The utility model relates to a ZigBee product development device based on the AT-MR500 module, which includes an AT-MR500 module embedded with a ZigBee protocol stack, a USB/UART unit connected to the AT-MR500 module, a sensing circuit, an LED, and a button circuit , LCD, expansion port, etc. The device is used for ZigBee wireless network product development, debugging and evaluation, mainly for product development of the AT-MR500 module with high cost performance, and the developed ZigBee products can be widely used in instrumentation, radio frequency identification, low-power remote sensing and telemetry , Medical electronic equipment, toys, smart home and remote intelligent control, etc., have broad market prospects.

Description

A ZigBee product development device

technical field

The utility model relates to a ZigBee product development device based on a ZigBee system-on-chip module, in particular to a ZigBee product development device with an AT-MR500 system-on-chip module, a sensor and a Chinese liquid crystal. the

Background technique

ZigBee wireless sensor network WSN is one of the main supporting technologies for building the Internet of Things, and ZigBee chips or modules are the main components for building ZigBee WSN. At present, there are three main ZigBee chip solutions: one is a dual-chip solution in which the RF transceiver and MCU are separated, and the ZigBee protocol stack is run on the MCU; The ZigBee protocol stack runs on the device; the third is a single-chip solution integrating RF transceiver and MCU. The dual-chip solution has high flexibility, but the single-chip solution occupies less resources and is easy to develop. The single-chip solution is the main solution of major manufacturers and is also the development trend of ZigBee chip solutions. the

For ZigBee chips or modules, the current market price is still on the high side. And AAC (AAC Acoustics Technology Co., Ltd.) is becoming a new force of ZigBee module providers. The AT-MR500 series Zigbee modules designed and produced by AAC have a cost-effectiveness unmatched by other ZigBee chips or modules, making ZigBee nodes low-cost. Become reality. In the ZigBee WSN engineering application, in order to grasp the principle, characteristics and engineering application development methods of the AT-MR500 module as soon as possible, and speed up the product development process, the ZigBee product development device for this module is an indispensable device. the

Utility model content

The technical problem to be solved by the utility model is to provide a ZigBee product development device based on the AT-MR500 module in compliance with the IEEE802.15.4 standard and the ZigBee specification. the

For solving the above-mentioned technical problems, the ZigBee product development device based on the AT-MR500 module of the present utility model comprises: be used to realize the AT-MR500 module of ZigBee wireless network product development, debugging and evaluation, the USB/UART that links to each other with the AT-MR500 module Unit, sensing circuit, LED for indicating working status, key circuit, LCD and expansion port. the

The AT-MR500 module includes: AAC AT-MR series modules, peripheral circuits necessary to form the minimum system, and an interface connected to the main development board. the

The main components of the AT-MR500 module are embedded microprocessors and wireless transceiver chips (such as MG2450, MG2455, etc.) that conform to the ZigBee/802.15.4 standard, including baseband modulation RF transceivers, hardware MAC, and embedded 8051 microcontrollers , application flash memory, 4 A/D inputs and a large number of peripherals. The AT-MR500 module is used to establish a ZigBee wireless network or automatically join an established ZigBee wireless network, and perform wireless communication and binding with other AT-MR500 modules for ZigBee product development or evaluation. the

Described USB/UART unit comprises: be used for the USB interface that is connected with computer, the UART interface that is connected with AT-MR500 module, the USB/UART conversion chip that is used to realize the signal conversion between USB interface and UART interface. the

The sensing circuit includes: a temperature and humidity sensor for temperature and humidity collection, a light intensity sensor for light intensity collection, a double potentiometer for voltage collection, and a dial encoder for orthogonal coding signal collection. the

The LCD is a 128*64 liquid crystal module with a Chinese character library. the

The power supply includes: external +5V power supply, USB power supply and battery power supply are optional. the

The other auxiliary circuits include: an external storage circuit connected to the AT-MR500 module, an interface circuit of an Ethernet interface module, and a digital dial switch. the

Compared with the prior art, the ZigBee product development device based on the AT-MR500 module of the utility model has the following advantages: (1) The utility model has more peripheral devices and can be directly used as a sensor node, and all ZigBee modules have All the ports can be connected externally, and the user can flexibly expand the external devices, and the portability is strong. (2) The utility model can not only be used for research and development of ZigBee products in scientific research institutes, but also can be used as a ZigBee WSN experimental teaching instrument in colleges and universities. (3) The utility model is strictly in accordance with the ZigBee/802.15.4 standard, mainly for product development of AAC AT-MR series modules with high cost performance, and has broad market prospects. (4) The utility model has good scalability, and the developed ZigBee products can be widely used in instrument automatic detection, factory automation and electrical control, replacing wired, voice applications, energy control, radio frequency identification, low-power remote sensing and telemetry , medical electronic equipment, computer peripherals, toys, smart home and remote intelligent control and other fields. the

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is the structural block diagram of USB/UART unit of the present utility model;

Fig. 3 is a schematic diagram of the power supply circuit of the present invention.

Detailed ways

Below in conjunction with accompanying drawing 1-3 the utility model is described further. the

As shown in Figure 1, the ZigBee product development device based on the AT-MR500 module of the present embodiment includes: the AT-MR500 module 1 of the embedded ZigBee protocol stack is used as the main control center of the development board, and is used to set up the ZigBee wireless network or automatically join the established ZigBee wireless network, wireless communication and binding with other AT-MR500 modules, ZigBee wireless network product development, debugging and evaluation; USB/UART unit 2 is used for AT-MR500 module 1 and computer information transmission; sensor circuit 3 Used for collecting temperature, humidity, illuminance, voltage and orthogonal coding signals; LED4 is used to indicate the power supply and ZigBee module 1 working status or event execution results; button circuit 5 is used for system reset, in-system programming download, external interrupt and button Input control; LCD module 6 with Chinese character library is used to display system operation status or user-specified information; external expansion port 7 is used to connect other circuit equipment; power supply includes external +5V, USB, battery three power supply methods; other auxiliary circuits include external Storage circuit, Ethernet interface module interface circuit, digital dial switch, etc. the

The USB/UART conversion chip 10 is used to realize the conversion between the computer USB interface 11 and the AT-MR500 module UART interface 13, and the peripheral circuit 12 of the USB/UART chip 10 provides necessary conditions for its work. The optional models of the USB/UART chip 10 are PL2303, CP2101 and other chips. UART0 and UART1 of AT-MR500 module 1 adopt the same structure. Generally, UART0 is used for program download and communication with other CPUs, and UART1 is mainly used for communication with other CPUs. the

The sensing circuit includes temperature and humidity sensors (such as SHT10, etc.) for temperature and humidity collection, illuminance sensors (such as TSL2550D, etc.) for illuminance collection, dual potentiometers for voltage collection (such as A10K, etc.), for Dial code encoder (such as ALPS dial encoder, etc.) for orthogonal coding signal acquisition, and necessary sensor peripheral circuits. the

As shown in Figure 3, U1 is a DC-DC chip, such as AMS1117-3.3, etc., F1 is a fuse, BT1 is a battery interface, J1 is connected to an external +5V power supply, SW5 is an external +5V power supply/USB power supply mode selection switch, and SW6 is a battery/ Non-battery-powered mode selection switch, SW7 is the AT-MR500 module power switch. the

The above-mentioned embodiments of the utility model are only examples for illustrating the utility model, and the implementation of the utility model is not limited thereto. The modifications, combinations, simplifications, substitutions, etc. made under the spirit and principle of the present utility model are all equivalent replacements, and are still included in the protection scope of the present utility model. the

Claims (4)

1. ZigBee product development device; It is characterized in that comprising: be used to realize the AT-MR500 module (1) of the exploitation of ZigBee radio network product, debugging and assessment, the USB/UART unit (2) that links to each other with AT-MR500 module (1), sensing circuit (3), the LED (4) that is used for indicating operating status, key circuit (5), LCD (6) and expansion mouthful (7).

2. ZigBee product development device according to claim 1 is characterized in that: said USB/UART unit (2) comprising: the USB/UART conversion chip (10) that is used for the USB interface (12) that links to each other with computing machine, the UART interface (13) that links to each other with said AT-MR500 module and is used to realize the conversion of signals between USB interface and (12) UART interface (13).

3. ZigBee product development device according to claim 1 is characterized in that: said sensing circuit (3) comprising: be used for Temperature Humidity Sensor (14) that temperature and humidity gathers, be used for illuminance sensor (15) that illuminance gathers, be used for the duplex potentiometer (16) of voltage acquisition and be used for the dial-up scrambler (17) that orthogonal intersection code signal is gathered.

4. ZigBee product development device according to claim 1 is characterized in that: described AT-MR500 module (1) also is connected with exterior storage circuit, ethernet interface module interface circuit and digital DIP change-over switch.

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