Wood moisture content detecting and verifying device

Abstract

The invention discloses a wood moisture content detecting and verifying device, relates to a moisture content detecting and verifying device, and solves problems that a conventional device cannot accurately detect the moisture content, cannot measure the wood moisture content of different trees at different temperatures and cannot verify the moisture content of wood with different moisture content at different temperatures. The device comprises a power supply, an induction part, a data processing part and a display screen, wherein the induction part comprises a probe and a temperature sensor; the data processing part comprises a moisture content detecting circuit, a temperature detecting circuit, an A / D (analog / digital) conversion module and a CPLD (complex programmable logic device) chip; the moisture content detecting circuit comprises a first detecting end, a second detecting end, a first triode, a second triode, a third triode, a field-effect tube, a first potentiometer, a second potentiometer, a third potentiometer, a voltage stabilizer, a first resistor, a second resistor, a third resistor, a first electrolytic capacitor, a second electrolytic capacitor, a first filter capacitor, a second filter capacitor and an operational amplifier. The device is simple in structure, and the detecting result is accurate.

Description

technical field [0001] The invention relates to a moisture content detection and verification device, in particular to a wood moisture content detection and verification device, and belongs to the technical field of wood detection. Background technique [0002] At present, the most accurate detection method for the moisture content of wood is the absolute dry weighing method, which is the ratio of the total mass of moisture contained in the wood sample to the mass of the dry wood sample (weighing method). It is very inconvenient to use the weighing method to detect the moisture content of wood, so the resistance method (detection of wood volume resistance with different moisture content) is used to detect the moisture content of wood during the wood drying production process, while the existing resistance method wood moisture content detection , only divides the wood into several categories according to the density for measurement, and does not accurately calibrate different...

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem that the moisture content detection of the existing device is inaccurate, the measurement of the moisture content of wood at different temperatures for different tree species cannot be realized, and the problems that the moisture content of wood with different temperatures and different moisture content cannot be checked and calibrated are solved.

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