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Low-power bridge array signal processing circuit

An array signal and processing circuit technology, which is applied in the field of signal processing, can solve problems such as unfavorable wiring and miniaturization of electronic equipment, and increase costs, and achieve low power consumption, reduce system cost and power consumption, and reduce design difficulty and cost. Effect

Active Publication Date: 2017-04-19
CHIPSEA TECH SHENZHEN CO LTD
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Problems solved by technology

This increases cost and is detrimental to wiring and miniaturization inside electronic equipment

Method used

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  • Low-power bridge array signal processing circuit
  • Low-power bridge array signal processing circuit
  • Low-power bridge array signal processing circuit

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] see image 3 , in the first implementation mode of the present invention, the low power consumption bridge array and the processing circuit 300 include a 4×4 bridge array, an analog-to-digital converter 301 and an excitation power supply 302 . The bridge array is composed of 16 bridges such as the bridge 310, the bridge 313, the bridge 340, and the bridge 343, and is arranged in 4 rows and 4 columns. Each electric bridge, taking the electric bridge 313 as an example, includes four resistive elements RS01-RS04 connected in the form of a Wheatstone bridge, wherein at least RS01 and RS03 are p...

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Abstract

The invention discloses a low-power bridge array signal processing circuit including a plurality of bridge units and a plurality of switches, the bridge units are arranged in an array of M rows and N columns, the excitation positive ends of each row of bridge units are in short circuit, the excitation negative ends of each column of bridge units are in short circuit, one ends of M switches are respectively connected with the excitation positive ends of M rows of bridge units, and the other ends are connected with the positive excitation voltage, one ends of N switches are connected with the excitation negative ends of the N columns of bridge units, and the other ends are connected with the negative excitation voltage. By means of the organic combination of the switches and the bridge array, the system cost and power consumption of the whole bridge array are significantly reduced, and meanwhile, the design difficulty and cost can be reduced without increasing the wiring and switch number.

Description

technical field [0001] The invention belongs to the technical field of signal processing, in particular to a signal processing circuit of a bridge array. Background technique [0002] Bridge circuits are widely used in various high-precision sensors, especially resistive bridge sensors, such as piezoresistor bridge circuits. [0003] For example, patent application 201510801427.6 discloses a half-bridge Wheatstone bridge strain measurement system that eliminates the influence of wire resistance, including a half-bridge Wheatstone bridge, contact switch K1, contact switch K2, and two calibration resistors R0; The first input terminal A of the Stone bridge is connected to the static contact S0 of the contact switch K1 through a wire, and the first input terminal A is also connected to the static contact S1 of the contact switch K1 through the calibration resistor R0, and the contact switch K1 The moving contact S2 is connected to the power supply E; the second input terminal ...

Claims

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Application Information

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IPC IPC(8): G01R17/00
CPCG01R17/00
Inventor 李晓
Owner CHIPSEA TECH SHENZHEN CO LTD
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