Abstract
The purpose of this study is to achieve real-time acquisition and monitoring of temperature in large-scale industrial or agricultural production scene, and timely detect abnormal temperature. FPGA chip, multi temperature sensor and alarm control module three parts consist of FPGA alarm system obtained based on multi temperature sensor. Multi temperature sensor is used for the acquisition of relevant temperature signal in the production site, and the transmission of the collected data through the way of digital signal chip to the FPGA chip for further processing. The FPGA chip is responsible for the parameter setting, the temperature signal acquisition and the threshold comparison and so on, and according to the data processing result, it can send out the normal response control signal to the alarm module. The alarm module contains the pre-warning lights and the alarm device that it can receive the control signal and realize alarm response. The results showed that the test in planting flowers in greenhouse showed that the system is sensitive in response and small in error of temperature acquisition, in accordance with the requirements for use. As a result, the system can be widely used in the temperature monitoring in the production scene, suitable for being promoted in a variety of occasions needing for monitoring the temperature.
Highlights
Temperature is the physical quantity to reflect the cold and hot degree of object, and one of the most common and basic parameters in industrial production
The FPGA chip is responsible for the parameter setting, the temperature signal acquisition and the threshold comparison and so on, and according to the data processing result, it can send out the normal response control signal to the alarm module
The temperature signal outputs the digital signal through the temperature sensor DS18B20 acquisition, and the digital signal output is sent to FPGA for the processing
Summary
Temperature is the physical quantity to reflect the cold and hot degree of object, and one of the most common and basic parameters in industrial production. We often need to monitor the temperature. The growth and breeding of crops are carried out in the appropriate temperature. If the temperature is not appropriate, it may cause a decline in the yield of crop, plants wither and even death [1]. Most of our country agriculture greenhouses have no practical temperature monitoring system, and there are some agricultural greenhouses still following the simple temperature device and paper data recorder for temperature measurement, unable to achieve real-time measurement and monitoring task of temperature data [2]. With the rapid development of social economy, more and more iJOE ‒ Vol 13, No 5, 2017
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