Resistive sensor array measuring device and method

A resistive sensor and measuring device technology, applied in the field of sensors, can solve the problems that interference cannot be effectively avoided, the existence of equivalent internal resistance is not considered, and the complexity of the circuit is increased, so as to eliminate contact resistance and avoid output internal resistance. Influence and improve the effect of measurement accuracy

CN107063312BActive Publication Date: 2019-08-13SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-08-13

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Abstract

The invention discloses a resistive sensor array measurement device, wherein the resistive sensor array is the resistive sensor array in which a line wire and a row wire are shared. The measurement device comprises the components of a standard resistor line which comprises N standard resistors in one line and is added in the resistive sensor array, thereby obtaining a new (M+1)*N resistor array in which the line wire and the row wire are shared; (M+1) operational amplifiers which are in one-to-one correspondence with (M+1) line wires of the resistor array, wherein the inverting input end and the output end of each operational amplifier are respectively connected with a corresponding line wire through a connecting wire; and a controller which is provided with at least (M+1) IO ports and at least N ADC sampling ports, wherein the (M+1) IO ports are in connection with the non-inverting input end of (M+1) operational amplifiers in a one-to-one correspondence manner, and furthermore the N ADC sampling ports are in connection with N row wires of the new resistor array in one-to-one correspondence. The invention further discloses a resistive sensor array measurement method. The resistive sensor array measurement device and the resistive sensor array measurement method have higher measurement precision and wider measuring range.
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Description

technical field

[0001] The invention relates to a resistive sensor array measuring device and method, belonging to the technical field of sensors. Background technique

[0002] The array sensing device is to combine multiple sensing elements with the same performance according to the structure of a two-dimensional array. It can change or generate corresponding shapes and characteristics by detecting changes in parameters focused on the array. This feature is widely used in biosensing, temperature tactile and thermal imaging based on infrared sensors, etc.

[0003] Resistive sensor arrays are widely used in infrared imaging simulation systems, force tactile sensing and temperature tactile sensing. Taking temperature touch as an example, since the temperature sensing device involves the transfer of heat and the perception of temperature, in order to obtain the thermal properties of the object, the device puts forward higher requirements for the temperature measurement accurac...

Examples

Embodiment Construction

[0033] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0034] In order to reduce the complexity of device interconnection in resistive sensor arrays, some researchers have proposed a two-dimensional array structure that shares row lines and column lines. figure 1 The structure of a two-dimensional resistive sensor array sharing row and column lines is shown. like figure 1As shown, the sensor array includes two sets of orthogonal lines as shared row lines and shared column lines respectively and an array of physical quantity sensitive resistors (ie, resistive sensors) distributed in a two-dimensional structure of M×N, each physical quantity in the array is sensitive One end of the resistor is connected to the corresponding row line, and the other end is connected to the corresponding column line. Each resistor in the array has a unique combination of row and column lines. The resistor in the i-th row and j-...