Multi-sensor signal acquisition and processing system based on sequential control

Abstract

The invention discloses a multi-sensor signal acquisition and processing system based on sequential control, which belongs to the field of signal processing and comprises a signal acquisition module, an analog-to-digital conversion module and a signal processing module. The signal acquisition module comprises at least two sensors and is used for acquiring analog signals; the analog-to-digital conversion module is specifically an ADC and is used for converting an analog signal into a digital signal; and the signal processing module comprises an amplification module, an integration module, an extraction module and a control module which are respectively used for amplifying, integrating and extracting the signals and controlling the processing operation. According to the invention, through flexible sequential control, acquisition and processing of multi-path sensor signals are realized, and the system has the advantages of high flexibility, high real-time performance and the like, is suitable for various application scenes, and can be widely applied to the fields of industrial automation, environmental monitoring and the like.

Description

Technical Field

[0001] The present application relates to the field of signal processing, and in particular, 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 is an important part of realizing system intelligence and automation. Traditional multi-channel sensor signal acquisition systems usually use fixed acquisition timing and processing procedures, which are difficult to adapt to complex and changing actual application scenarios.

[0003] In the patent with publication number CN 118972333 A and the patent name of a transmission control method and system for IoT terminal data, it is proposed to pre-process the collected sensor signals and then perform timing control through the control module to determine the priority, and then adaptively adjust the optimization of data transmission and queue management according to the priority. However, this solution 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 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 signal when collecting multiple signals. 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 in view of the problems such as insufficient flexibility of the existing acquisition and processing timing, the embodiment of the present 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 processing the digital signals, including: an amplification module, including a first electronic switch, for amplifying the digital signal by controlling the first electronic switch to obtain an amplified signal; an integration module, for integrating the amplified signal to obtain an integrated signal; an extraction module, including a second electronic switch, for extracting and outputting the integrated signal after integration by controlling the second electronic switch; a control module, for controlling the first electronic switch and the second electronic switch and thereby controlling the operations of the amplification module, the integration module and the extraction module.

[0005] Optionally, the integration module includes a FIFO (First In First Out) register and at least one adder, which are used to integrate the amplified signal.

[0006] Optionally, a transmission timing of a signal is controlled according to the first electronic switch and 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 through software programming or hardware configuration.

[0009] The beneficial effects of this application are:

[0010] 1. High flexibility. This solution can flexibly configure and adjust the acquisition timing and the operation of each processing link by controlling the electronic switch through the control module according to the characteristics of different sensors and signal processing requirements.

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

[0012] 3. Real-time and precise control. The control module in this solution performs real-time and precise timing control on the amplification, integration, and extraction modules through electronic switches, which can reduce data processing delays and avoid interference and distortion in signal processing. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0015] Figure 2 is a timing diagram of amplifying a signal by controlling a first electronic switch, as proposed in an embodiment of the present application;

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

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

[0018] The above 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 DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

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

[0023] The signal acquisition module includes a sensor group 1, specifically N sensors, where N is greater than or equal to 2 and N is an integer. In the embodiment of the present application, N is 4, that is, it includes 4 sensors N1, N2, N3, and N4. The sensor is used to measure the analog signal of the external physical quantity, and can be a temperature sensor, a pressure sensor, a current sensor, etc., and is not specifically limited in this application.

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

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

[0026] The amplification module, specifically the first electronic switch 3, is used to control the timing of the collected signal by controlling the switch, and then control the gain of the signal. According to the signal processing requirements, the switch of a certain sensor signal is controlled to be turned on, and the current sensor signal can be selected for signal processing through the subsequent module. When a signal is controlled to be transmitted for A consecutive cycles, the current signal is gain A times.

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

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

[0029] Among them, at least two adders are included, and integration operation can be selected to be performed on any one or more signals at the same time.

[0030] The extraction module specifically includes a second electronic switch 5. After the amplified signal is integrated by the integration module, the second electronic switch is controlled to be turned on for extraction of a certain signal according to the signal processing requirements. When it is necessary to extract n times of a signal, only 1 / n times of the signal needs to be transmitted and output through the switch. For the integrated signal that does not need to be extracted, the second electronic switch can be turned on to control its direct output.

[0031] The control module is used to control the extraction, integration and extraction operations of the signal by controlling the on and 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, and the opening and closing of the switch can also be controlled by buttons in the FPGA, so that it can perform signal processing through software settings or hardware configuration. In this application, it is specifically MCU 6, without specific limitation.

[0032] In one embodiment, Figure 2 The figure shows a timing diagram of signal amplification by controlling the electronic switch implemented by the system in this embodiment. The MCU controls the electronic switch according to a predetermined timing sequence and selects different sensor signals for collection in turn.

[0033] MCU can set the electronic switch to collect the signals of sensors such as N1, N2, N3, and N4 at different times. The collected signals are stored in the FIFO register in a first-in-first-out manner. If the N2 signal needs to be gained by 4 times and the N3 signal needs to be gained by 2 times, the sensor signals can be controlled by the switch as follows. Figure 2 The timing diagram shown is used for acquisition, that is, the N1 signal is acquired, the N2 signal is acquired and amplified by 4 times, the N3 signal is acquired and amplified by 2 times, and finally the N4 signal is acquired and temporarily stored in the FIFO register to adapt to the dynamic range of subsequent processing.

[0034] In another embodiment, Figure 3 FIG. 1 is a timing diagram of 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 the signal by controlling the signal in the FIFO register. The sensor signal of the next cycle collected is added to the same sensor signal of the previous cycle through the adder. Figure 3 The figure shows that the N1 signal is added, that is, the current N1 signal is integrated, which can smooth the signal, reduce the influence of noise, and improve the stability of the signal.

[0035] In yet another embodiment, Figure 4 FIG. 1 is a timing diagram of signal extraction by controlling an electronic switch through the system in this embodiment. After the signal is integrated, the signal can be controlled to be output after extraction or directly output. Figure 2 After the signal shown in FIG. 1 enters the FIFO register for transmission and no integration operation is performed on the signal, the MCU controls the second electronic switch control signal as shown in FIG. Figure 4 The transmission is performed as shown, that is, the N1 and N4 signals are directly output, and the N2 and N3 signals are extracted by 2 times and output. At this time, the signal processing operation of the collected signals is completed.

[0036] In summary, the embodiments of the present application enable the system to dynamically adjust the timing parameters of signal acquisition and processing according to different sensor characteristics and application scenarios through flexible timing configuration capabilities, thereby achieving accurate acquisition and efficient processing of various types of 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 acquisition needs and improve adaptability and reliability to different application scenarios.

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

[0038] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0039] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. 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 mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

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

[0041] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A multi-sensor signal acquisition and processing system based on timing control, characterized in that: include: A signal acquisition module, comprising at least two sensors, for acquiring analog signals; An analog-to-digital conversion module, specifically an ADC, for converting the analog signal into a digital signal; A signal processing module, used for performing signal processing on the digital signal, comprising: an amplification module, comprising a first electronic switch, configured to amplify the digital signal to obtain an amplified signal by controlling the first electronic switch; An integration module, used for integrating the amplified signal to obtain an integrated signal; An extraction module, comprising a second electronic switch, configured to extract and output the integrated signal after integration by controlling the second electronic switch; A control module is used to control the first electronic switch and the second electronic switch and further control the operations of the amplification module, the integration module and the extraction module.

2. According to the multi-sensor signal acquisition and processing system based on timing control according to claim 1, it is characterized in that: The integration module includes a FIFO register and at least one adder, which are used to integrate the amplified signal.

3. The multi-sensor signal acquisition and processing system based on timing control according to claim 1 is characterized in that: The transmission timing of the signal is controlled according to the first electronic switch and the second electronic switch.

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

5. The multi-sensor signal acquisition and processing system based on timing control according to claim 4 is characterized in that: The control module can be flexibly adjusted through software programming or hardware configuration.

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