Method, system and device for calibrating output signal of particle counter and medium
A technology for particle counters and output signals, which is applied in measuring devices, scientific instruments, individual particle analysis, etc., can solve the problems of particle counters’ influence on the accuracy of particle monitoring, achieve the same effect as above, and improve the accuracy
Pending Publication Date: 2022-07-26
SUZHOU SUXIN ENVIRONMENT SCI & TECH CO LTD
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Problems solved by technology
However, the signal output by the laser still needs to be processed by the signal amplification circuit for signal conversion and amplification. During the processing, the signal will inevitably be affected by factors such as temperature and the stability of the signal amplification circuit. The particle monitoring accuracy of the particle counter will still be affected
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[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the protection scope of the present application.
[0039] The core of the present application is to provide a method, system, device and medium for calibrating the output signal of a particle counter. By acquiring the optical noise signal of the particle counter, and by determining whether the optical noise signal satisfies a preset condition, the operation of the laser in the particle counter can be adjusted. The voltage is used to stabilize the output optical noise signal, and then to calibrate t...
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The invention relates to the field of particle counters, and discloses a method, system and device for calibrating an output signal of a particle counter and a medium, and the method comprises the steps: obtaining an optical noise signal outputted by a to-be-calibrated particle counter, judging whether the optical noise signal meets a preset condition, and if not, transmitting a calibration signal to an optical power control circuit, therefore, the optical power control circuit adjusts the input voltage of the laser in the to-be-calibrated particle counter so as to calibrate the output signal of the to-be-calibrated particle counter. Therefore, according to the technical scheme provided by the invention, the output signal of the particle counter is acquired, and the input voltage of the laser is adjusted according to the output signal so as to calibrate the output signal of the particle counter, so that the phenomenon that the output signal of the particle counter is calibrated when the particle counter receives, converts, amplifies and the like particle scattered light is avoided; the influence of factors such as temperature and stability of a signal amplification circuit in the particle counter on the output signal of the particle counter is eliminated, and the particle monitoring accuracy of the particle counter is further improved.
Description
technical field [0001] The present application relates to the field of particle counters, and in particular, to a method, system, device and medium for calibrating an output signal of a particle counter. Background technique [0002] Particle counters form particle signals by receiving, converting and amplifying the scattered light of particles. They are mainly used to test the cleanliness of gases with particles, and are widely used in the fields of pharmaceuticals, food, semiconductors and electronics. [0003] When the particle counter performs particle monitoring, the higher the light intensity of the laser beam used to excite the scattered light of the particle, the stronger the particle signal obtained by the same particle, and vice versa. At the same time, the stability of the signal amplifying circuit of the particle counter for receiving, converting and amplifying the scattered light signal of the particle will also affect the particle signal output of the same part...
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IPC IPC(8): G01N15/10
CPCG01N15/1012G01N2015/1486
Inventor 王少永惠旅锋
Owner SUZHOU SUXIN ENVIRONMENT SCI & TECH CO LTD