Resistive sensor array measuring device and method

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.

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...

AI Technical Summary

Problems solved by technology

Using a 16×16 array network bolometer array for verification, only 32 pins are used, it has been confirmed that the model can effectively distinguish device damage or small changes in device value, it has a certain accuracy, but there is still a problem in detection speed technical flaw

In 2009, Y.J.Yang et al. proposed a 32×32 array of temperature and tactile sensing arrays for the artificial skin of the robotic arm. In order to ensure the detection accuracy, the circuit shields the interference of non-tested resistances in the array. Operational amplifier circuits are introduced in one column, and the circuit complexity is greatly increased, and the interference of internal resistance cannot be effectively avoided. The detection efficiency, circuit complexity and avoiding the interference of equivalent internal resistance inside electronic devices have become the biggest technical bottlenecks.

Although this method avoids the crosstalk current to a large extent, reduces the circuit complexity at the same time, has a high detection speed and low computational complexity, but it does not take into account the existence of the equivalent internal resistance when the high and low levels are output by the single-chip microcomputer, and at the same time the array The resistance value range of the medium resistance is limited to a certain range, and the problem of measuring the resistance value of a large range of resistance has not been solved. Therefore, it is necessary to find a method that can effectively avoid the equivalent internal voltage of the voltage output port without increasing the complexity of the calculation. The method of resisting interference, and at the same time, the range of resistance value also needs to be further expanded

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