Novel fluorescent signal demodulation device and fluorescent signal demodulation method
A fluorescent signal and demodulation device technology, which is applied in the detection field of fluorescent sensing systems, can solve the problems of increasing data processing costs, limiting pulse and detection frequency, etc., and achieves the effects of reducing natural logarithmic operations, reducing influence, and high sampling frequency
Active Publication Date: 2016-01-13
苏州英迪戈精密光电科技有限公司
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This operation increases the cost of data processing, may also require the support of external data processing resources, such as digital signal processor chips, and greatly limits the pulse and detection frequency
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[0050] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0051] The new fluorescent signal demodulation device shown in Figure 1 includes a fluorescent optical fiber probe 1 with a fluorescent material 1.1 installed at the end, a pulsed excitation light source 2 for emitting a pulsed excitation light signal, and a pulsed excitation light source 2 for controlling the excitation of the pulsed excitation light source. The pulse light source controls the drive unit 6, the beam splitter 3 for reflecting the pulse excitation signal and separating the fluorescence signal from the pulse excitation signal, the condenser lens 7 for focusing the pulse excitation signal and the fluorescence stimulated signal, and the fluorescent optical fiber Optical fiber coupler 8 for optical transmission between probe 1 and condenser lens 7, a photoelectric tube for converting the separated fluorescent signal into a fluorescent...
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The novel fluorescent signal demodulation device and the fluorescent signal demodulation method of the present invention include a fluorescent optical fiber probe, a pulse excitation light source, an excitation pulse light source control drive unit, and a spectroscope for reflecting the pulse excitation signal and separating the fluorescence signal from the pulse excitation signal , Condenser lens for focusing pulse excitation signal and fluorescence stimulated signal, fiber optic coupler for optical transmission between fluorescence fiber optic probe and condenser lens, used to convert separated fluorescence signal into fluorescence electrical signal The photoelectric tube and transimpedance amplifier, microprocessor with analog-to-digital converter, the drive control output of the microprocessor is connected to the input end of the excitation pulse light source control drive unit, and the microprocessor with analog-to-digital converter is used to convert the photoelectric The fluorescent electrical signal converted by the tube and the transimpedance amplifier is demodulated by the non-iterative fast natural logarithmic function, so as to obtain the actual environmental physical quantity to be measured. The present invention reduces the demand on microprocessor performance.
Description
technical field [0001] The invention relates to the technical field of fluorescent sensing system detection using the principle of fluorescent afterglow, and specifically refers to a novel fluorescent signal demodulation device and a fluorescent signal demodulation method. The invention relates to various fluorescent materials and physical parameters with different time decay characteristics, such as temperature, humidity, pressure, gas concentration, or similar system measurement and operation demodulation methods. technical background [0002] Fast and accurate calculation of the fluorescence afterglow time constant τ, or the fluorescence exponential time decay constant τ, is the key to improve the detection performance of the sensor system using the fluorescence afterglow principle. To calculate the fluorescence index time decay constant of fluorescent materials, it is first necessary to perform accurate natural logarithmic calculations. In the existing method for obtain...
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IPC IPC(8): G01N21/64G01K11/32
Inventor 王兵达里尔詹姆斯
Owner 苏州英迪戈精密光电科技有限公司