Temperature detection and signal transmission device under vacuum environment
A technology of signal transmission and vacuum environment, applied in measuring devices, electrical devices, signal transmission systems, etc., can solve the problem that the temperature measuring device cannot accurately measure the temperature inside the vacuum, and achieve the effect of accurate measurement and transmission of displayed temperature
Inactive Publication Date: 2011-06-22
ZHEJIANG UNIV
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Problems solved by technology
For some vacuum containers or equipment without reserved vacuum joints (such as imported freeze dryers), conventional temperature measuring devices cannot accurately measure the temperature inside the vacuum without destroying the wall
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[0019] The invention is controlled by a single-chip microcomputer, and transmits temperature signals through the emission and reception of ultrasonic waves. The device is composed of a measuring and transmitting part located inside the vacuum container and an external receiving and displaying part. The temperature measuring sensor adopts a thermocouple, and the temperature measuring end of the thermocouple is placed at the temperature point a to be measured, and the temperature signal is converted into a voltage signal, which is amplified by signal acquisition. The circuit amplifies the voltage signal, and then converts the voltage analog signal into a digital signal through an analog-to-digital A / D converter to be connected to the single-chip interface. At the same time, the temperature compensation circuit uses a digital temperature sensor for temperature compensation. The single-chip microcomputer connects the input signal with a cycle Ts, and outputs a high frequency whose ...
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The invention discloses a temperature detection and signal transmission device under vacuum environment. The temperature includes a measurement emitting part inside a vacuum container and a receiving displaying part outside the vacuum container. In the measurement emitting part inside the vacuum container, a thermocouple, a signal collecting and amplifying circuit, a modulus A / D switching circuitare connected with a first singlechip in sequence; a temperature-compensation circuit is connected with the first singlechip, an ultrasonic radiating circuit and an ultrasonic radiating head in sequence; in the receiving displaying part outside the vacuum container, an ultrasonic receiving head is connected with an ultrasonic receiving circuit, a singlechip, and a LED electronic display screen insequence. The temperature detection and signal transmission device under vacuum environment has the beneficial effect of being capable of reaching the goal of accurately measuring, transmitting and displaying the temperature of the point to be measured inside the vacuum container by transmitting and receiving a temperature signal through ultrasonic under the premise of not destroying the sealing performance and insulating performance of the vacuum container.
Description
technical field [0001] The invention relates to a temperature measurement and display device, in particular to a temperature measurement and signal transmission device in a vacuum environment. Background technique [0002] At present, the existing industrial temperature measuring devices generally place the temperature measuring sensor at the position to be measured, and convert the temperature signal into an electrical signal for transmission and display. For some vacuum containers or equipment without reserved vacuum joints (such as imported freeze dryers), conventional temperature measuring devices cannot accurately measure the temperature inside the vacuum without destroying the wall of the container. The present invention provides a solution to this type of problem. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a temperature measurement and signal transmission device in a vacuum en...
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IPC IPC(8): G01K1/02G01K7/02G08C23/02
Inventor 张绍志徐梦洁苏健陈光明
Owner ZHEJIANG UNIV