Sensor array data acquisition system based on frequency modulation and frequency division multiplexing

A frequency-division multiplexing and data acquisition system technology, applied in the field of information science, can solve problems such as disordered system wiring and affect system reliability and robustness, so as to save software and hardware resources and reduce wiring complexity Sexuality and easy operation

Inactive Publication Date: 2019-06-28
南京八云七度生物技术有限公司
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Problems solved by technology

However, at present, it is mainly connected in parallel, that is, N sensors need to be connected by multiples of N wires. This topology makes the wires of the entire system very messy and disorderly, which greatly affects the reliability and robustness of the system.
Therefore, the traditional parallel connection method of sensors is no longer applicable when the number of sensors is greatly increased.

Method used

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  • Sensor array data acquisition system based on frequency modulation and frequency division multiplexing
  • Sensor array data acquisition system based on frequency modulation and frequency division multiplexing

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Embodiment 1

[0034] Such as figure 2 As shown, the sensor array is composed of four sensors 1, and the sensors 1 are all piezoelectric sensors. One side pins of all the sensors 1 are connected to each other and finally connected to the system level integrated circuit chip 4 . The SoC chip 4 includes a demodulator 6 and an analog-to-digital converter 7 . The other pin of the sensor 1 is connected to the corresponding frequency modulation circuit 3, and the frequency modulation circuit 3 includes a voltage-controlled oscillator 8 and an amplifier 9, which are sequentially connected to one end of the frequency modulation circuit 3 of the next sensor 1, and finally connected to System-on-Integrated Circuit Chip 4.

[0035] During operation, the reading of the analog-to-digital converter is the modulation result of each sensor 1 and its corresponding voltage-controlled oscillator 8 . The reading of the analog-to-digital converter 7 (Input ADC )for:

[0036] input ADC =S1*e i*2π*fVCO1 +S...

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Abstract

The invention provides a sensor array data acquisition system based on frequency modulation and frequency division multiplexing. The device comprises a sensor array (2) composed of at least two sensors (1), a frequency modulation circuit (3), and a system-level integrated circuit chip (4) provided with a demodulator (6) and an analog-to-digital converter (7). The sensors (1) are mutually connectedon a single-side pin and are finally connected to a wire grounding end (5) of a system-level integrated circuit chip (4) with a demodulator and an analog-to-digital converter. Pins on the other sideof each sensor (1) are connected with each other through respective frequency modulation circuits (3) and are finally connected to a port of an analog-to-digital converter (7) of a system-level integrated circuit chip (4) with a demodulator and an analog-to-digital converter. According to the system, the wiring complexity and the component cost are reduced, and the system stability is improved.

Description

technical field [0001] The invention relates to a distributed data acquisition system through a sensor array, in particular to a sensor array data acquisition system based on frequency modulation and frequency division multiplexing, which belongs to the technical field of information science. Background technique [0002] With the advent of the Internet of Things era, distributed sensors have been widely used. In particular, sensor array data collection has many applications in the national health and medical fields, such as sleep monitoring, fetal monitoring, EEG monitoring, ECG monitoring, and body temperature monitoring, all of which require sensors to be distributed in various parts of the body; in addition, in 5G And in the field of millimeter-wave radar, since the phased array system used for high-frequency signal transmission and reception also has 64 or 128 antenna array scenarios, it is necessary to connect multiple antennas or sensor unit arrays. However, at prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/12G01D21/02
Inventor 赵超刘宏刘德晔丁波
Owner 南京八云七度生物技术有限公司
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