A constant refrigeration control circuit for a hand-held X-ray fluorescence spectrometer
A fluorescence spectrometer and refrigeration control technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., to achieve the effects of improved resolution, simple structure and novel design
Active Publication Date: 2016-03-09
昆山书豪仪器科技有限公司 +1
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[0002] The SDD detector is the core component of a conventional X-ray fluorescence spectrometer, similar to a photodiode, but it uses a single-electrode structure, it can perform X-ray spectrum measurement at a higher count rate, but it requires a constant cooling function
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[0012] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0013] refer to figure 1 As shown, a constant refrigeration control circuit of a hand-held X fluorescence spectrometer includes a sensor I / O interface module 1, and the TEMP port of the J6 connector of the sensor I / O interface module 1 is connected to the operational amplifier in the amplification filter circuit 2 Positive input terminal, the positive input terminal of the operational amplifier is connected in parallel with a resistor R3 and a capacitor C11, the other end of the resistor R3 is connected to a voltage, the negative input terminal of the operational amplifier is connected in parallel with resistors R15 and R18, and the other end of the R18 is connected The output terminal of the operational amplifier, the output terminal of the operational amplifier is connected to a resistor R5, the resistor R5 is connected in parallel...
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The invention discloses a constant refrigeration control circuit of a handheld X-ray fluorescence spectrometer. The constant refrigeration control circuit comprises a sensor I / O (input / output) interface module. A connector of the sensor I / O interface module is connected with a positive input end of an operational amplifier in an amplification and filter circuit, the positive input end of the operational amplifier is connected with a resistor R3 and a capacitor C11 in parallel, the other end of the resistor R3 is connected with a voltage source, a negative input end of the operational amplifier is connected with a resistor R15 and a resistor R18 in parallel, the other end of the resistor R18 is connected with an output end of the operational amplifier, the output end of the operational amplifier is connected with a resistor R5, the resistor R5 is connected with a capacitor C12 and a resistor R6 in parallel, the resistor R6 is connected with a resistor R11, a capacitor C13 and a diode A1 in parallel, the other end of the capacitor C12, the other end of the resistor R11 and the other end of the capacitor C13 are grounded, and the diode A1 is connected with a refrigeration module in parallel. The constant refrigeration control circuit has the advantages that the constant refrigeration control circuit is novel in design and simple in structure, a constant refrigeration function can be realized for an SDD (silicon drift detector), and the electronic resolution can be improved.
Description
technical field [0001] The invention relates to a refrigeration circuit, in particular to a constant refrigeration control circuit for a hand-held X fluorescence spectrometer. Background technique [0002] The SDD detector is the core component of a conventional X-ray fluorescence spectrometer, similar to a photodiode, but it uses a single-electrode structure, which can perform X-ray spectrum measurement at a higher count rate, but it requires a constant cooling function. Contents of the invention [0003] The purpose of the present invention is to overcome the above problems in the prior art, and provide a constant refrigeration control circuit for a hand-held X-ray fluorescence spectrometer, which can provide constant refrigeration to the SDD detector. [0004] In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention is realized through the following technical solutions: [0005] A constant refrige...
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IPC IPC(8): F25B49/00
Inventor 周健
Owner 昆山书豪仪器科技有限公司