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a detector circuit

A detector and circuit technology, applied in the field of detector circuits, can solve problems such as low precision and inability to measure, and achieve the effects of convenient operation, simple structure and strong anti-interference ability.

Active Publication Date: 2018-01-16
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The digital multimeter used in the market is easy to use for measuring voltage and current, but because it does not have an amplifier circuit, it has low accuracy for measuring voltage (millivolt level) and current (milliamp level). ), Fluke (Fluke) instruments, the price is more than 10,000 yuan, and the digital multimeter cannot measure other types of data such as temperature and strain. A detector that detects more accurately

Method used

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Embodiment Construction

[0018] in:

[0019] 1-6 hole sockets, when measuring different types of values ​​(force, strain, thermocouple, voltage, current, etc.), choose different sockets for signal input / output;

[0020] 2—Reversing switch K3, to expand the display range of the instrument, under normal circumstances, it can display -1999 to 9999, after adding the reversing switch, the displayable range is: ±9999; if the input signal is positive, then 2 to 1,5 Connect to 4 for measurement; if the input signal is negative, connect 2 to 3, 5 to 6 for measurement.

[0021] 3—AL808 regulator, by testing different types of objects, input the set parameters, display the value of the measured object, and increase / decrease the value of the flashing digital tube, you can refer to the device manual;

[0022] 4—DF512S5 battery module, providing 5V voltage to the potentiometer;

[0023] 5—Current limiting resistor R, with a resistance value of 20kΩ, controls the current within the range of 0—20mA;

[0024] 6—Sel...

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Abstract

The invention provides a detector circuit, which is characterized in that it includes a 6-hole socket (1), a reversing switch (2), an AL808 regulator (3), a first battery module (4), and a current limiting resistor (5) , a selection switch (6), a potentiometer (7), a second battery module (9), a power switch (10), a battery (11), and a charging port (12).

Description

technical field [0001] The invention relates to a detector circuit, which is suitable for detecting force value, strain, temperature, voltage (millivolt level), current (milliampere level) and the like. Background technique [0002] At present, in the process of the aircraft structural strength test in our institute, a large control system is also used in weighing the test piece, hanging test (no loading), monitoring inflation air pressure feedback value, simple strain / displacement measurement and detecting thermocouple temperature Equipment, measuring equipment and other related equipment, in order to save costs and improve efficiency to develop a detector. The detector can also measure voltage (millivolt level), current (milliamp level) and many other types of data. The digital multimeter used in the market is easy to use for measuring voltage and current, but because it does not have an amplifier circuit, it has low accuracy for measuring voltage (millivolt level) and cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D21/02
Inventor 盛锴沈川张永兴朱亚辉米征李宏亮
Owner CHINA AIRPLANT STRENGTH RES INST