A kind of integrated device of array type lc pressure sensor

Abstract

An array type LC pressure sensor integrated device, characterized in that: real-time acquisition of multi-point pressure signal changes through the frequency domain characteristics of the signal, including a flexible film layer and a microstrip line constructed on it, a transmitting antenna, a receiving antenna and several LC Pressure sensor; the several LC pressure sensors are distributed in an array on the flexible film layer, and placed on one side of the microstrip line to form a band stop filter; the microstrip line traverses all the LC pressure sensors, and one end thereof is electrically connected to the transmitting antenna, The other end is electrically connected with the receiving antenna. The invention integrates the inductive part and the capacitive part of the LC pressure sensor, which has higher space utilization and symmetry, and is easy to construct an array. It uses microstrip lines and transceiver antennas to realize far-field transmission of signals, and is bionic on the human body or robots. The field of electronic skin has application potential.

Description

technical field [0001] The invention relates to the field of pressure sensors, in particular to an array type LC pressure sensor integrated device. Background technique [0002] Flexible pressure array sensors have important application potential in the field of bionic robots and human electronic skin. In terms of data reading, the traditional method is: connect the pressure sensor to the terminal through a wire, or add an edge computing chip and a Bluetooth module to the pressure sensor to collect pressure change signals in real time. The disadvantages are: the addition of wires complicates the device integration process, and cannot be applied in some closed or harsh environments; the use of edge computing and Bluetooth modules increases the cost of sensor production, and at the same time, as an energy-consuming device, the production The sensor must add a power source, so it is necessary to introduce energy supply technologies such as solid-state batteries or wireless cha...

AI Technical Summary

Problems solved by technology

[0006] For a single LC pressure sensor, it is mainly composed of a capacitor and an inductor. The two are mostly placed on a plane. Each pressure sensor needs enough space to accommodate the two parts of the inductor and the capacitor. This is no problem in a single LC pressure sensor. However, if it is made into a high-density array, the spatial configuration of this structure will cause great inconvenience

[0007] 2. Read the question

The electromagnetic coupling strength between the coils is rapidly dispersed as the distance increases, resulting in the distance of wireless reading is often limited to within 1cm, which makes the advantages of this wireless mode in terms of distance appear insignificant

[0009] Array reading: The signal reading of the usual LC pressure sensor is carried out by electromagnetic coupling, so the reading coil and the LC sensing coil need to be nested together, which is no problem in a single LC pressure sensor, but if an array is formed, then The reading coil needs to cover all the sensing arrays, otherwise it is impossible to read the signals at the same time

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