A multi-sensor signal acquisition and processing system based on timing control

Abstract

The present application discloses a multi-sensor signal acquisition and processing system based on timing control, belonging to the field of signal processing, which includes a signal acquisition module, an analog-to-digital conversion module, and a signal processing module. The signal acquisition module includes at least two sensors for acquiring analog signals; the analog-to-digital conversion module is specifically an ADC for converting analog signals into digital signals; the signal processing module includes an amplification module, an integration module, a decimation module, and a control module, which are respectively used for signal amplification, integration, decimation, and control of the above-mentioned processing operations. Through flexible timing control, the present application realizes the acquisition and processing of multi-channel sensor signals, has the advantages of strong flexibility and high real-time performance, is applicable to a variety of application scenarios, and can be widely used in fields such as industrial automation and environmental monitoring.

Description

Technical Field

[0001] This application relates to the field of signal processing. Specifically, it particularly relates to a multi-sensor signal acquisition and processing system based on timing control. Background Art

[0002] In many fields such as industrial automation, environmental monitoring, and medical equipment, the acquisition and processing of multi-channel sensor signals are important links to achieve system intelligence and automation. Traditional multi-channel sensor signal acquisition systems usually adopt fixed acquisition timing and processing procedures, and it is difficult to adapt to complex and changeable actual application scenarios.

[0003] In the patent with publication number CN 118972333 A and patent name of "A Transmission Control Method and System for Internet of Things Terminal Data", it is proposed to perform timing control through a control module after preprocessing the acquired sensor signals, so as to determine the priority, and then adaptively adjust the optimization of data transmission and queue management according to the priority. However, in this solution, it mainly emphasizes the optimization of data transmission and resource allocation, which involves complex algorithms with high complexity. And the dynamic adjustment of bandwidth resources and the adaptive scheduling mechanism may increase the resource consumption of the system. In addition, this solution cannot adaptively adjust the acquisition timing and cannot perform signal processing on a certain channel signal during multi-channel signal acquisition. Therefore, there is an urgent need for a solution that can flexibly configure signal processing through precise timing control. Summary of the Invention

[0004] Based on the deficiencies of the prior art and aiming at problems such as insufficient flexibility of the existing acquisition and processing timing, the embodiment of this application provides a multi-sensor signal acquisition and processing system based on timing control, including: a signal acquisition module, including at least two sensors, for acquiring analog signals; an analog-to-digital conversion module, specifically an ADC (Analog-to-Digital Converter), for converting the analog signals into digital signals; a signal processing module, for performing signal processing on the digital signals, including: an amplification module, including a first electronic switch, for amplifying the digital signals by controlling the first electronic switch to obtain amplified signals; an integration module, for integrating the amplified signals to obtain integrated signals; a decimation module, including a second electronic switch, for decimating and outputting the integrated signals after integration by controlling the second electronic switch; a control module, for controlling the first electronic switch and the second electronic switch, and further controlling the operations of the amplification module, the integration module, and the decimation module.

[0005] Optionally, the integration module includes a FIFO (First In First Out) register and at least one adder, for integrating the amplified signals.

[0006] Optionally, the transmission timing of the signal is controlled according to the first electronic switch and the control signal of the second electronic switch.

[0007] Optionally, the control module is specifically one of an MCU (Microcontroller Unit) or an FPGA (Field-Programmable Gate Array).

[0008] Furthermore, the control module can be flexibly adjusted by means of software programming or hardware configuration.

[0009] The beneficial effects of this application are as follows:

[0010] 1. High flexibility. In this solution, according to the characteristics of different sensors and the signal processing requirements, the acquisition timing and the operations of each processing link can be flexibly configured and adjusted by controlling the electronic switch through the control module.

[0011] 2. Adaptive configuration for multi-sensor signal processing. This solution is applicable to collecting multi-channel sensor signals and can automatically adjust the processing of a certain channel of signal and its processing parameters according to the characteristics of the sensor signals.

[0012] 3. Real-time precise control. In this solution, the control module performs real-time precise timing control on the amplification, integration, and decimation modules through the electronic switch, which can reduce data processing delay and avoid interference and distortion in signal processing. Description of the Drawings

[0013] The drawings described herein are used to provide a further understanding of this application and form a part of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0014] Figure 1 is a schematic structural diagram of a multi-sensor signal acquisition and processing system based on timing control;

[0015] Figure 2 is a timing diagram of signal amplification by controlling the first electronic switch proposed in an embodiment of this application;

[0016] Figure 3 is a timing diagram of signal integration by controlling the integration module proposed in an embodiment of this application;

[0017] Figure 4 is a timing diagram of signal decimation by controlling the second electronic switch proposed in an embodiment of this application.

[0018] Among them, the above-mentioned drawings include the following reference numerals:

[0019] 1 - Sensor group, 2 - ADC, 3 - First electronic switch, 4 - FIFO register, 5 - Second electronic switch, 6 - MCU, 7 - Adder. Detailed implementation

[0020] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0022] Figure 1 The figure shows a schematic structural diagram of a multi-sensor signal acquisition and processing system based on timing control, which includes:

[0023] A signal acquisition module, including a sensor group 1, specifically N sensors, where N is greater than or equal to 2 and N is an integer. In the embodiments of this application, N is 4, that is, it includes 4 sensors N1, N2, N3, N4. The sensors are used to measure the analog signals of physical quantities in the external world, and can be temperature sensors, pressure sensors, current sensors, etc. There is no specific limitation in this application.

[0024] An analog-to-digital conversion module, specifically ADC 2 in this application, is used to convert the collected analog signals into digital signals.

[0025] A signal processing module is used to process the converted digital signals, which includes the following sub-modules:

[0026] Amplification module, specifically the first electronic switch 3, is used to control the timing of the acquisition signal by controlling the switch, and further control the gain of the signal. According to the signal processing requirements, when controlling the switch of a certain sensor signal to be turned on, the current sensor signal can be selected to pass through the subsequent module for signal processing. When controlling a signal to be transmitted for A consecutive cycles, it is to perform A-fold gain on the current signal.

[0027] In addition, a sensor signal to be processed can also be selected by controlling the closing of the first electronic switch.

[0028] Integration module, specifically the FIFO register 4 and the adder 7. When the signal is amplified by the amplification module, it is transmitted in the first-in-first-out timing and temporarily stored in the FIFO register. At this time, when it is necessary to integrate a certain signal according to the signal requirements, it is necessary to control the current signal and the same sensor signal in the next cycle to be added by the adder, which is to integrate the current signal.

[0029] Among them, there are at least two adders, and it is possible to select to perform integration operations on any one or more signals simultaneously.

[0030] Decimation module, specifically including the second electronic switch 5. When the amplified signal is integrated by the integration module, a decimation operation is performed on a certain signal by controlling the second electronic switch to be turned on according to the signal processing requirements. When it is necessary to perform n-fold decimation on a signal, only 1 / n times of the signal needs to be transmitted through the switch and output. For the integration signal that does not need to be decimated, it is possible to select to turn on the second electronic switch to control its direct output.

[0031] Control module, used to control the decimation, integration, and decimation operations of the signal by controlling the on / off of the first electronic switch and the second electronic switch. Specifically, it is one of the MCU or FPGA. The opening and closing of the switch can be set by software through the MCU, or the opening and closing of the switch can be controlled by a button in the FPGA, so that it can perform signal processing through software settings or hardware configuration. In this application, it is specifically the MCU 6, and there is no specific limitation.

[0032] In one embodiment, Figure 2 The following shows the timing diagram of signal amplification by controlling the electronic switch through the system in this embodiment. The MCU controls the electronic switch according to the predetermined timing, and sequentially selects different sensor signals for acquisition.

[0033] The MCU can set the electronic switch to collect the signals of sensors such as N1, N2, N3, and N4 at different times respectively. The collected signals are stored in the FIFO register in a first-in-first-out manner. If it is necessary to perform a 4-fold gain on the N2 signal and a 2-fold gain on the N3 signal, only by controlling the switch, the sensor signals can be collected according to the timing diagram as Figure 2 shown. That is, first collect the N1 signal, then collect the N2 signal and amplify it by 4 times, then collect the N3 signal and amplify it by 2 times, and finally collect the N4 signal, and temporarily store the collected signals in the FIFO register to adapt to the dynamic range of subsequent processing.

[0034] In another embodiment, Figure 3 shown is the timing diagram for realizing signal integration by controlling the electronic switch through the system in this embodiment. After the signal is amplified by the amplification module, the MCU performs an integration operation on it by controlling the signal in the FIFO register, and adds the sensor signal of the next cycle collected to the same sensor signal of the previous cycle through an adder, as Figure 3 shown for adding the N1 signal, that is, performing an integration operation on the current N1 signal, which can smooth the signal, reduce the influence of noise, and improve the stability of the signal.

[0035] In yet another embodiment, Figure 4 shown is the timing diagram for realizing signal extraction by controlling the electronic switch through the system in this embodiment. After the signal is integrated, it can be controlled to be output after extraction or directly output. After the signal as Figure 2 shown enters the FIFO register for transmission and no integration operation is performed on the signal, at this time, the MCU controls the second electronic switch to control the signal to be transmitted as Figure 4 shown, that is, directly output the N1 and N4 signals, and perform 2-fold extraction and output on the N2 and N3 signals. At this time, the signal processing operation of the collected signal is completed.

[0036] In summary, through the flexible timing configuration ability in the embodiments of the present application, the system can dynamically adjust the timing parameters of signal collection and processing according to different sensor characteristics and application scenarios, so as to achieve precise collection and efficient processing of various signals. This flexibility is not only reflected in timing control, but also in the compatibility and adaptability of the system to different types of sensors, which can meet diverse signal collection requirements and improve the adaptability and reliability to different application scenarios.

[0037] The serial numbers of the embodiments of the present application above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0038] In the above embodiments of the present application, the descriptions of the respective embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0039] In several embodiments provided by the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0040] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0041] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A multi-sensor signal acquisition and processing system based on timing control, characterized in that Including: A signal acquisition module, including at least two sensors, for acquiring analog signals; An analog-to-digital conversion module, specifically an ADC, for converting the analog signals into digital signals; A signal processing module, for performing signal processing on the digital signals, including: An amplification module, including a first electronic switch, for amplifying the digital signals by controlling the first electronic switch to obtain amplified signals; An integration module, including a FIFO register and at least one adder, for integrating the amplified signals to obtain integrated signals; A decimation module, including a second electronic switch, for decimating and outputting the integrated signals after integration by controlling the second electronic switch; A control module, for controlling the first electronic switch and the second electronic switch, and further controlling the operations of the amplification module, the integration module, and the decimation module.

2. The multi-sensor signal acquisition and processing system based on timing control according to claim 1, wherein Controlling the transmission timing of the control signals of the first electronic switch and the second electronic switch.

3. A multi-sensor signal acquisition and processing system based on timing control according to claim 1, characterized in that, The control module is specifically one of an MCU or an FPGA.

4. A multi-sensor signal acquisition and processing system based on timing control according to claim 3, characterized in that, The control module can be flexibly adjusted by means of software programming or hardware configuration.

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