Device and method for utilizing photoinduced ultrasonic method to detect concentration of acetylene gas
A technology of gas concentration and photo-induced ultrasound, which is used in measurement devices, material analysis by optical means, instruments, etc. problems, to achieve the effect of avoiding fatal accidents of personnel poisoning, low cost and fast detection speed
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[0031] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.
[0032] Such as figure 1 As shown, the detection device for detecting acetylene gas provided by the present invention is composed of a signal generator 1, a controller 2, a nanosecond pulse DFB laser 3, a collimator 4, a long optical path absorption photoacoustic cell 5, a A spherical mirror 6, a second spherical mirror 7, a pressure sensor 8, a temperature sensor 9, an ultrasonic detector 10, a lock-in amplifier 11, a data acquisition card 12 and a computer 13 constitute, wherein:
[0033] The signal generator 1 generates two signals, one signal is a m...
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