Novel particle counter and particle counting method

Abstract

The invention discloses a novel particle counter which comprises a transmission pipe, an inductance coil, a power supply circuit, an impedance detection circuit and a counting controller. The inductance coil is wound on the transmission pipe to form a hollow inductance element. The power supply circuit is used for supplying power to the inductance element. The impedance detection circuit is used for checking impedance signals of the inductance element in real time. When a transmission medium is introduced into the transmission pipe, an impedance signal acquired by the impedance detection circuit in real time is a first impedance signal. When particles and the transmission medium are mixed and the particles are introduced into the transmission pipe together with the transmission medium, animpedance signal acquired by the impedance detection circuit in real time is a second impedance signal. The counting controller is used for comparing the first impedance signal with the second impedance signal, generating a pulse change signal, and calculating the number of the particles and identifying the type of the particles according to the pulse change signal. The invention further disclosesa particle counting method. According to the invention, automatic counting and identification of particles can be realized, counting is accurate, and the operation is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of inductance counting, in particular to a novel particle counter and a particle counting method based on the novel particle counter. Background technique [0002] The requirements of modern high-precision machinery for a dust-free environment, the detection of PM2.5 in the air, and the research on cells in biomedicine all make the research on the number and state of particles in the microscopic field more urgent, and the counting technology of microscopic particles is also appears to be particularly important. The existing microscopic particle counting methods include blood counting method, light scattering particle counter and Coulter's principle and other methods. [0003] 1. Blood count method. The blood counting method is carried out on the basis of the blood counting board, and the structure of the blood counting board is as follows: figure 1 shown. The hemocytometer is used to microscopically coun...

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Problems solved by technology

[0011] However, the accuracy of the counting result of the light scattering particle counter is relatively low. The detection result of this method is more inclined to the detection of an order of magnitude, and requires the design and manufacture of a separate external device, and the general use cost is relatively high.

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