Voltage frequency converter of painting workshop gas concentration detection system

A gas concentration detection, voltage frequency technology, applied in the direction of analog-to-digital converters, etc., can solve the problems of low precision and affect the detection accuracy, and achieve the effect of ensuring conversion accuracy, low cost, and improving linearity

Inactive Publication Date: 2018-02-16
刘应华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The analog-to-digital conversion circuit in the existing gas concentration detection system is directly implemented by an analog-to-digital converter, and its application accuracy is low, which will affect the accuracy of detection

Method used

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  • Voltage frequency converter of painting workshop gas concentration detection system

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Embodiment

[0014] Such as figure 1 As shown, the voltage-frequency converter of the gas concentration detection system in the painting workshop includes a signal input circuit, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, The second capacitor C2, the third capacitor C3, the transient voltage suppression diode D1, the voltage-to-frequency converter and the signal output circuit, wherein the voltage-to-frequency converter uses an LM331 chip, and its eighth pin is connected to a power supply VCC. Both ends of the first resistor R1 are respectively connected to the signal input line and the seventh pin of the voltage-frequency converter, one end of the first capacitor C1 is connected to the line between the first resistor R1 and the seventh pin of the voltage-frequency converter, and the other end grounded. One end of the transient voltage suppression diode D1 is connected to the seventh pin of the voltage-t...

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Abstract

The invention discloses a voltage frequency converter of a painting workshop gas concentration detection system. The voltage frequency converter comprises a signal input line, a first resistor, a second resistor, a fourth resistor, a first capacitor, a second capacitor, a transient voltage suppressor diode, a voltage frequency converter body and a signal output line. The two ends of the first resistor are connected with the signal input line and a seventh pin of the voltage frequency converter body respectively, one end of the first capacitor is connected with a line between the first resistorand the seventh pin of the voltage frequency converter body, and the other end of the first capacitor is grounded. One end of the transient voltage suppressor diode is connected with the seventh pinof the voltage frequency converter body, and the other end of the transient voltage suppressor diode is grounded. One end of a parallel branch formed by connecting the second resistor with the secondcapacitor in parallel is connected with a first pin of the voltage frequency converter body, and the other end of the parallel branch is grounded. The two ends of the fourth resistor are connected with a third pin of the voltage frequency converter body and the signal output line respectively. When the voltage frequency converter is applied, by achieving analog-digital conversion of a detection signal of a sensor, the conversion precision obtained when the detection signal is converted can be guaranteed.

Description

technical field [0001] The invention relates to shoe processing technology, in particular to a voltage-frequency converter for a gas concentration detection system in a paint spraying workshop. Background technique [0002] With the development of society and the improvement of people's living standards, people pay more and more attention to the working environment. In the processing and production of shoes, the environment of the paint shop is poor, and people have also adopted a series of optimization measures to improve the construction environment of the paint shop. In order to facilitate the detection of gas concentration in the painting workshop, a gas concentration detection system has been designed, which includes a sensor, a DC regulated power supply, an analog-to-digital conversion circuit and a digital display circuit. When the gas concentration detection system is applied, it is powered by a DC regulated power supply Powering the entire system, the sensor conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/12
CPCH03M1/12
Inventor 刘应华
Owner 刘应华
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