[Instrument latest patent] A Zigbee-based household water meter reading system

Content Description

The utility model relates to the field of water meters, in particular to a household water meter reading system based on Zigbee.

Background of the invention

In recent years, with the rapid development of computer technology, network technology and microelectronics technology, more and more new technologies have been applied to automatic meter reading systems, especially the development of wireless low-power transmission technologies. The wireless meter reading system developed in recent years has gradually become the main development trend of the meter reading system due to the advantages of high working efficiency, accurate data copying and real time, easy installation, and no need for household meter reading. The main representative wireless methods are infrared, Bluetooth, GPRS and Zigbee. Because the wireless meter reading network has the characteristics of large number of nodes, small data flow, and strong real-time performance, it is necessary to consider factors such as cost, power consumption, and network scalability when selecting wireless communication technologies. Compared with several other wireless communication technologies, Zigbee is a wireless communication technology based on the IEEE802.15.4 standard for free-band usage, low-rate, and short-distance transmission. Its outstanding advantages are close range, low power consumption, and low cost. And it has high reliability, security and self-organization capabilities, and supports large network capacity.

Summary of the Invention

The technical problem to be solved by the utility model is: The utility model provides a household water meter reading system based on Zigbee, which can realize collecting the water meter data in a large range regularly.

In order to solve the above technical problems, the technical solution adopted by the utility model is: The utility model provides a household water meter reading system based on Zigbee, including a water meter, a collector, a repeater, a concentrator, and a remote server; The controller includes a microcontroller, a first storage device, a first Zigbee communication module, a first radio frequency module, an RS485 interface, an infrared interface, and a first power supply module; the first storage device is connected to the microcontroller; a controller is connected to the first Zigbee communication module; the first Zigbee communication module is connected to the repeater through the first RF module; and the microcontroller passes through the RS485 interface or the infrared interface and The water meter is connected; the microcontroller is connected to the commercial power through the first power supply module.

The repeater includes a second Zigbee communication module, a second radio frequency module, and a second power supply module; the second Zigbee communication module is connected to the second radio frequency module; and the second radio frequency module and one or more of the acquisitions And the second power module is connected to the commercial power; the concentrator includes a PIC microcontroller, a second storage device, a third Zigbee communication module, a third radio frequency module, a GPRS module, and a power supply module; the PIC microcontroller and the MCU The second storage device is connected; the third Zigbee communication module is connected to one or more of the repeaters; the PIC microcontroller is connected to the remote server through the GPRS module; and the PIC microcontroller communicates with the third Zigbee. a module is connected; the third Zigbee communication module is connected to one or more of the collectors through the third radio frequency module.

The utility model has the beneficial effects that the meter reading system provided by the utility model has the characteristics of both distributed and centralized, and can complete the data collection of each water meter unit at a time, and has the advantages of unicast, multicast, and broadcast. the way. The meter reading system consists of a remote server, a Zigbee network, a GPRS network, and a smart water meter. The data acquisition layer, the data transmission layer, and the water meter monitoring management layer generally form a three-tier distributed structure. The remote wireless meter reading system designed by combining Zigbee and GPRS brings benefits and convenience to users and enterprises. The main advantages are that it reduces the intensity of manual labor and reduces the cost of meter reading; it overcomes the uncertainty of manual meter reading and solves the problem of copying. The problem of statistical difficulties caused by different tables, improving the level of management system and economic benefits; through remote servers, timely supervising the situation of water meter nodes and finding problems and solving problems at any time.

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