An intelligent low-temperature fresh-keeping grain storage system

A low-temperature, resistance technology, applied in the field of circuits, can solve problems such as frequency hopping, signal distortion, and affecting the popularization and use of intelligent low-temperature fresh-keeping grain storage systems

Active Publication Date: 2021-05-28
河南天硕机电设备工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Grain storage work is closely related to the optimization and improvement of the quality of human life. With the continuous development of science and technology and the continuous improvement of people's living standards, higher requirements have been put forward for food safety control. With modern electronic technology and computer control Realize modern grain storage technology, among which the intelligent low-temperature fresh-keeping grain storage system is the current key development direction, which improves the management efficiency of grain storage work. However, in practical applications, the control terminal in the intelligent low-temperature fresh-keeping grain storage system uses the signal The signal in the transmission channel often has frequency hopping and attenuation during the transmission process, which leads to signal distortion, causing the control terminal of the intelligent low-temperature fresh-keeping grain storage system to issue wrong instructions, which seriously affects the popularization and use of the intelligent low-temperature fresh-keeping grain storage system

Method used

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  • An intelligent low-temperature fresh-keeping grain storage system
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  • An intelligent low-temperature fresh-keeping grain storage system

Examples

Experimental program
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Embodiment 1

[0014] Embodiment 1. An intelligent low-temperature fresh-keeping grain storage system includes a frequency acquisition circuit and a frequency division feedback circuit. Signal frequency, the signal transmission channel is the analog signal channel used by the control terminal receiving signal acquisition circuit in the intelligent low-temperature fresh-keeping grain storage system, and the diode D2 and diode D3 are used to form a clamping circuit to clamp the signal within 0-+5V. In the frequency feedback circuit, the frequency division feedback circuit uses the triode Q2, the triode Q1 and the capacitor C2-capacitor C4 to form a frequency division circuit to divide the signal into two signals with the same amplitude and different frequency. The tube D5 and the capacitor C9 form a constant current circuit to stabilize the signal, and the second circuit uses the triode Q3, the inductor L1, and the inductor L2 to form an amplitude modulation circuit to stabilize the signal pote...

Embodiment 2

[0017] Embodiment 2, on the basis of Embodiment 1, the frequency acquisition circuit selects the frequency acquisition device J1 model as SJ-ADC to acquire the signal in the input end of the signal transmission channel for receiving signals by the control terminal in the intelligent low-temperature fresh-keeping grain storage system Frequency, use diode D2 and diode D3 to form a clamping circuit to clamp the signal within 0-+5V and input the frequency division feedback circuit. The power supply terminal of frequency collector J1 is connected to capacitor C1, one end of resistor R1 and the other end of resistor R3 , the cathode of the diode D2 and the power supply +5V, the ground terminal of the frequency collector J1 is grounded, the output terminal of the frequency collector J1 is connected to the resistor R1, the other end of the capacitor C1 and one end of the resistor R2, and the other end of the resistor R2 is connected to the regulator tube The negative pole of D1 and the...

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Abstract

The invention discloses an intelligent low-temperature fresh-keeping grain storage system, which includes a frequency acquisition circuit, a frequency-division feedback circuit and a frequency-selection output circuit. The frequency of the signal in the channel input terminal, the frequency division feedback circuit uses the triode Q2, the triode Q1 and the capacitor C2-capacitor C4 to form a frequency division circuit to divide the signal into two signals with the same amplitude and different frequencies. Combined with resistor R19 and resistor R20 to form a composite circuit to prevent signal saturation and distortion, it can automatically adjust frequency and calibrate the signal in the signal transmission channel for the control terminal receiving signal in the intelligent low-temperature fresh-keeping grain storage system to prevent signal distortion.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to an intelligent low-temperature fresh-keeping grain storage system. Background technique [0002] Grain storage work is closely related to the optimization and improvement of the quality of human life. With the continuous development of science and technology and the continuous improvement of people's living standards, higher requirements have been put forward for food safety control. With modern electronic technology and computer control Realize modern grain storage technology, among which the intelligent low-temperature fresh-keeping grain storage system is the current key development direction, which improves the management efficiency of grain storage work. However, in practical applications, the control terminal in the intelligent low-temperature fresh-keeping grain storage system uses the signal The signal in the transmission channel often has frequency hopping and attenuati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/21H04B17/11
Inventor 蔡学军乔占民刘长生林为宪吴建军李玉薛渊
Owner 河南天硕机电设备工程有限公司
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