Wireless monitoring system for refrigerator temperature based on Zigbee

Abstract

The invention discloses a wireless monitoring system for refrigerator temperature based on Zigbee. The wireless monitoring system comprises a control module, a radio frequency module, a display module and data acquisition modules arranged on all refrigerates. Each data acquisition module comprises a single chip microcomputer, a wireless communication module and multiple measuring nodes distributed in the refrigerators. Each measuring node comprises a microcontroller, a temperature sensor and a power unit. Each temperature sensor is used for acquisition of temperature information and transmitting the temperature information to each microcontroller. Each microcontroller is used for sending received temperature information to each single chip microcomputer. Each single chip microcomputer is used for transmitting received temperature information and position information corresponding to each measuring node to the control module. The control module is used for displaying received information and informing a worker of abnormal information by means of the radio frequency module in a text message form. The wireless monitoring system for refrigerator temperature based on Zigbee has following beneficial effects: the wireless monitoring system has a simple structure and is used conveniently and not only capable of conveniently monitoring the multiple refrigerators but also capable of actively informing the worker of abnormal information so that great practical value is obtained.

Description

technical field [0001] The invention relates to the field of cold storage monitoring, in particular to a ZigBee-based wireless monitoring system for cold storage temperature. Background technique [0002] ZigBee is a low-power LAN protocol based on the IEEE802.15.4 standard. According to international standards, ZigBee technology is a short-distance, low-power wireless communication technology. This name (also known as Zigbee Protocol) comes from the eight-character dance of bees, because bees (bee) use the "dance" of flying and "buzzing" (zig) to shake their wings to communicate the location information of pollen with their companions. That is to say, bees rely on this method to form a communication network in the group. [0003] ZigBee technology has the following advantages: [0004] 1. Low power consumption. In the low-power standby mode, two AAA dry batteries can support one node to work for 6-24 months, or even longer. This is the outstanding advantage of ZigBee. ...

AI Technical Summary

Problems solved by technology

[0007] 3. Low rate

[0009] 5. Short latency

[0015] The existing cold storage is generally single-point detection. In the actual application process, it is often difficult to test because the monitoring locations are too scattered, the distribution range is wide or due to poor conditions and no one is on duty.

Although data can also be transmitted through telephone lines, it is often half the effort, and it is even more impossible to carry out wired data transmission in areas where communication cables cannot be erected.

[0016] In addition, the existing cold storage monitoring systems generally only display data and cannot actively notify staff