Long-distance wireless natural gas detector based on trap wave filtering circuit
A long-distance wireless and notch filter technology, applied in the field of detectors, can solve problems such as hidden dangers of personal safety of inspectors, and achieve the effect of signal stability
Inactive Publication Date: 2016-05-04
CHENGDU NIAOER ELECTRONICS TECH CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the defect that the traditional natural gas detector can only be used at the detection site and bring personal safety hazards to the inspectors, and provide a long-distance wireless natural gas detector based on a notch filter circuit
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[0021] Such as figure 1 Shown, the long-distance natural gas detector based on the notch filter circuit of the present invention mainly consists of a microcontroller, a gas sensor, a power supply, a display, an alarm, a storage device and a notch filter circuit that are connected to the microcontroller respectively , a wireless receiving circuit connected to the notch filter circuit, an A / D conversion chip connected to the gas sensor, and a wireless transmission circuit connected to the A / D conversion chip; the wireless transmission circuit communicates with the wireless network through a wireless network The receiving circuit is connected;
[0022] Among them, the gas sensor adopts the MD61 natural gas sensor produced by Shanghai Meisi Electronic Technology Co., Ltd. This type of natural gas sensor has high sensitivity, long life and low cost. The A / D conversion chip is used to convert the analog signal output by the gas sensor into a digital electrical signal. The ADC0809 t...
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The invention discloses a long-distance wireless natural gas detector based on a trap wave filtering circuit. The detector is characterized by comprising a microcontroller, a gas sensor, a power supply, a display, an alarm, a memory, the trap wave filtering circuit, a wireless reception circuit, an A / D conversion chip and a wireless emission circuit, wherein the power supply, the display, the alarm, the memory and the trap wave filtering circuit are connected with the microcontroller, the wireless reception circuit is connected with the trap wave filtering circuit, the A / D conversion chip is connected with the gas sensor, the wireless emission circuit is connected with the A / D conversion chip, and the wireless emission circuit is connected with the wireless reception circuit via the wireless network. Signals are transmitted via the wireless network, a detection staff can detect leakage of natural gas needless of reaching the detection site, and the safety of the detection staff is ensured. The signals are received and processed by the wireless reception network, so that the received signals are more stable. The trap wave filtering circuit can filter interference signals from the signals, and the interference signals are prevented from influencing the detection precision of the detector.
Description
technical field [0001] The invention relates to a detector, in particular to a long-distance wireless natural gas detector based on a notch filter circuit. Background technique [0002] As natural gas becomes more and more popular, people pay more and more attention to the safety of natural gas use. Nowadays, people usually use portable natural gas detectors to detect whether natural gas leaks. However, natural gas itself has the characteristics of rapid diffusion and easy explosion. , the leakage point will expand rapidly, and a large area of disaster risk area will be formed in a very short period of time at the accident site. When people use traditional portable natural gas detectors to detect natural gas leakage, if the detection personnel cannot Evacuation will easily lead to poisoning of on-site inspection personnel. Contents of the invention [0003] The purpose of the present invention is to overcome the defect that the traditional natural gas detector can only...
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IPC IPC(8): G08B21/16
CPCG08B21/16
Inventor 李洪军
Owner CHENGDU NIAOER ELECTRONICS TECH CO LTD