Three-dimensional temperature field acoustic detection device and method in microwave heating environment

Abstract

The invention discloses a three-dimensional temperature field acoustic detection device and method in a microwave heating environment. According to the three-dimensional temperature field acoustic detection device and method in the microwave heating environment, a DSP control unit drives an ultrasonic transmission circuit, the ultrasonic transmission circuit drives an ultrasonic transducer array to transmit ultrasonic waves, the ultrasonic waves are transmitted in the microwave heating environment and then are received by the ultrasonic transducer array, received ultrasonic wave mechanical signals are converted into electric signals by the ultrasonic transducer array and then are transmitted to an ultrasonic receiving circuit, and the received electric signals are processed by the ultrasonic receiving circuit and then are input into an ultrasonic data collecting unit; the ultrasonic data collecting unit collects and temporarily stores ultrasonic data under the control of the DSP control unit, and then the ultrasonic data are transmitted to an upper computer through a data transmission interface; the DSP control unit is connected with the upper computer through a serial port, and a hot point alarm protection unit is connected with the alarm signal output end of the DSP control unit through a signal transmission line. The three-dimensional temperature field acoustic detection device and method in the microwave heating environment have the advantages that the structure is simple, installation is convenient, and abnormal alarm is achieved.

Description

technical field [0001] The invention belongs to the technical field of temperature detection of industrial microwave heating, and in particular relates to a three-dimensional temperature field acoustic detection device used in a microwave heating environment. Background technique [0002] As a new type of heat source, microwave has the advantages of fast heating speed, high utilization rate of heat energy, fast automatic control, etc. It has been widely used in the fields of medical treatment, scientific research and industrial heating. In the process of using microwaves for industrial heating, temperature is particularly important, but temperature measurement in the environment of strong microwave electromagnetic field is a major problem in the application of microwave technology; at the same time, the microwave heating process is complicated, and local temperatures are often too high, and even explosions occur Case. Therefore, the effective detection and reconstruction of...

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Problems solved by technology

The main disadvantage of this method is: the measurement range is small, only the surface temperature of the heated object can be measured, and it cannot reflect the three-dimensional temperature field of the industrial microwave heating area

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