Analog quantity signal transmission system based on Internet of Things

Abstract

The invention discloses an analog quantity signal transmission system based on the Internet of Things, and relates to the technical field of Internet of Things sensing. In the system, an environment sensor is used for collecting an environment analog quantity signal of a target area; the analog-to-digital conversion module is used for performing analog-to-digital conversion processing on the environment analog quantity signal; the host wireless communication module is used for transmitting an environment digital signal; the slave wireless communication module is used for receiving an environment digital signal; the digital-to-analog conversion module is used for performing digital-to-analog conversion processing on the environment digital signal; the interface module is used for transmitting the environment restoration analog quantity signal to environment simulation equipment; the environment restoration analog quantity signal is used for enabling the environment simulation equipment to control the environment condition of the test area to be matched with the target area. According to the invention, the environment analog quantity signals are accurately collected, transmitted and restored, so that the environment conditions of the test area and the target area are kept consistent, and the influence of the environment information on the test operation can be intuitively and accurately understood and controlled.

Description

Technical Field

[0001] The present invention relates to the field of Internet of Things sensing technology, and in particular to an analog signal transmission system based on the Internet of Things. Background Art

[0002] When testing operations are performed in industrial workshops, outdoor environments, and laboratories, environmental sensors are usually required to monitor environmental information in order to accurately grasp environmental information and facilitate smooth testing operations.

[0003] In traditional testing work, it is usually necessary to collect environmental information through sensors in the test environment. The environmental information is generally an analog signal (such as a current signal or a voltage signal). Then the detected analog signal is transmitted to the tester's equipment through a wire. However, if the signal wire is long and the impedance in the wire is large, the collected analog signal will be attenuated or distorted, and it is impossible to remotely collect and analyze the detection signal with high precision.

[0004] In order to overcome this problem, the solution adopted by the related technology is to convert the analog signal collected by the environmental sensor into a digital signal through wireless communication technology and transmit it to the tester, who then analyzes and processes the digital signal.

[0005] However, in many cases, only analyzing and processing digital signals cannot intuitively and accurately understand the impact of environmental information on test operations. Summary of the invention

[0006] In view of the above-mentioned technical problems and defects, the purpose of the present invention is to provide an analog signal transmission system based on the Internet of Things, which can accurately collect, transmit and restore environmental analog signals to keep the environmental conditions of the test area and the target area consistent, so that the impact of environmental information on the test operation can be intuitively and accurately understood and controlled.

[0007] To achieve the above-mentioned purpose, the present invention provides an analog signal transmission system based on the Internet of Things, including an environmental sensor, an analog-to-digital conversion module, a host wireless communication module, a slave wireless communication module, a digital-to-analog conversion module, an interface module and an environmental restoration analog signal; the environmental sensor is used to collect the environmental analog signal of the target area; the analog-to-digital conversion module is connected to the environmental sensor, and is used to perform analog-to-digital conversion processing on the environmental analog signal to obtain an environmental digital signal; the host wireless communication module is connected to the analog-to-digital conversion module, and is used to transmit the environmental digital signal; the slave wireless communication module is communicatively connected to the host wireless communication module, and is used to receive the environmental digital signal; the digital-to-analog conversion module is connected to the slave wireless communication module, and is used to perform digital-to-analog conversion processing on the environmental digital signal to obtain an environmental restoration analog signal; the interface module is connected to the digital-to-analog conversion module, and is connected to the environmental simulation device of the test area, and is used to transmit the environmental restoration analog signal to the environmental simulation device; the environmental restoration analog signal is used to enable the environmental simulation device to control the environmental conditions of the test area to match the target area.

[0008] The present invention is based on the Internet of Things technology, collects analog signals through environmental sensors, converts them into digital signals through analog-to-digital conversion modules, transmits them using wireless communication technology, and then restores them to analog signals through digital-to-analog conversion modules, thereby realizing remote high-precision signal acquisition and analysis. The interface module transmits the restored analog signals to the environmental simulation device, so that the environmental conditions of the test area can accurately simulate the target area, thereby providing reliable environmental monitoring and control for industrial production, and ensuring the smooth progress of the operation. Thus, the present invention outputs intuitive analog signals so that the impact of environmental information on the operation can be directly and accurately understood and controlled. This signal restoration and real-time environmental simulation capability can highly unify the test environment of the laboratory with the actual application environment, facilitate intuitive and accurate understanding of the impact of environmental information on the operation, thereby improving the controllability, reliability and operating efficiency of the operating environment, and ensuring that in a complex and changeable environment, the test operation activities can be carried out smoothly, efficiently and accurately.

[0009] In some embodiments, the host wireless communication module includes a first host wireless communication module and a second host wireless communication module, and the slave wireless communication module includes a first slave wireless communication module and a second slave wireless communication module; the first host wireless communication module is connected to the first slave wireless communication module through a first wireless communication network, or the second host wireless communication module is connected to the second slave wireless communication module through a second wireless communication network; the communication standard of the first wireless communication network is different from the communication standard of the second wireless communication network.

[0010] By adopting the technical solution of the above embodiment, by integrating two sets of wireless communication modules, namely the first host wireless communication module and the second host wireless communication module, and the corresponding slave module in the system, the communication reliability and flexibility of the system are significantly improved. By supporting two different wireless communication standards, the system can select the most suitable communication network for data transmission according to the actual communication environment and needs. This design not only provides communication redundancy and ensures the continuity of data transmission, but also allows the system to seamlessly switch to another standard when one communication standard encounters interference or failure, thereby optimizing communication efficiency and the overall performance of the system.

[0011] In some embodiments, the system also includes a host control processing module, which is connected between the analog-to-digital conversion module and the host wireless communication module. When the communication quality of the first wireless communication network is lower than a preset communication quality standard, the host control processing module is used to transmit the environmental digital signal to the second host wireless communication module, and the second host wireless communication module is used to transmit the environmental digital signal to the second slave wireless communication module through the second wireless communication network.

[0012] By adopting the technical solution of the above embodiment, the system is endowed with the ability to intelligently switch communication paths by introducing a host control processing module. When the communication quality of the first wireless communication network drops below the preset standard, the module can automatically switch the environmental digital signal to the second host wireless communication module and continue to transmit through the second wireless communication network. This intelligent switching mechanism significantly improves the reliability of data transmission, ensures the integrity and accuracy of key environmental data, and maintains efficient operation of the system even in an environment with unstable communication conditions.

[0013] In some embodiments, the host control processing module is also used to obtain communication quality parameters of the first wireless communication network, determine the communication quality evaluation result of the first wireless communication network based on the communication quality parameters and the communication quality standard, and determine whether to send the environmental digital signal through the first wireless communication network based on the communication quality evaluation result.

[0014] By adopting the technical solution of the above embodiment, the system's adaptive ability and communication efficiency are further enhanced by enabling the host control processing module to have the function of obtaining and evaluating communication quality parameters. The module can monitor key parameters such as the signal strength, bit error rate and packet loss rate of the first wireless communication network in real time, and compare these parameters with the preset communication quality standards to intelligently decide whether to continue sending data through the current network. This real-time evaluation and decision-making mechanism enables the system to dynamically adjust the communication strategy and optimize the data transmission path, thereby improving the utilization of communication resources while ensuring the quality of data transmission.

[0015] In some embodiments, the host control processing module is also used to obtain changes in environmental information of the target area and control the signal collection frequency of the environmental sensor according to the changes in the environmental information.

[0016] By adopting the technical solution of the above embodiment, the host control processing module is allowed to dynamically adjust the acquisition frequency of the environmental sensor according to the changes in the environmental information of the target area, thereby optimizing the data acquisition process. This dynamic adjustment strategy enables the system to increase the acquisition frequency when the environment changes drastically to capture more details, and reduce the acquisition frequency when the environment is stable to save energy and storage resources. This not only improves the efficiency and quality of data acquisition, but also enables the system to respond more flexibly to different monitoring needs. In some embodiments, the host control processing module is also used to encrypt the environmental digital signal to obtain an encrypted environmental digital signal.

[0017] By adopting the technical solution of the above embodiment, the data security of the system is significantly improved by integrating the encryption processing function in the host control processing module. By encrypting the environmental digital signal, the system can ensure that the data during transmission is not accessed or tampered with by unauthorized persons, thereby protecting the confidentiality and integrity of sensitive environmental data. This encryption mechanism is particularly important for application scenarios that require high security, such as military, medical or critical infrastructure monitoring.

[0018] In some embodiments, the host control processing module is further used to filter the environmental digital signal to obtain a filtered environmental digital signal.

[0019] By adopting the technical solution of the above embodiment, the quality of the environmental digital signal is improved by introducing the filtering processing function in the host control processing module. By filtering the signal, the system can remove noise and interference and extract more accurate and stable data, thereby providing a more reliable basis for subsequent data analysis and decision-making. This filtering process not only optimizes the quality of the data, but also enhances the system's ability to adapt to complex environmental changes.

[0020] In some embodiments, the system further includes a relay module, which is connected between the first host wireless communication module and the first slave wireless communication module, and is used to enhance the ambient digital signal before transmitting it to the first slave wireless communication module.

[0021] By adopting the technical solution of the above embodiment, by adding a relay module to the system, the coverage of the wireless communication network is effectively expanded and the signal transmission capability is enhanced. The relay module can receive, enhance and forward environmental digital signals, thereby overcoming the attenuation and interference problems that may be encountered by wireless signals during transmission. This relay mechanism is particularly suitable for application scenarios with complex geographical environments or long communication distances, ensuring the continuity and reliability of data transmission.

[0022] In some embodiments, the system further includes a slave control processing module, which is connected between the slave wireless communication module and the digital-to-analog conversion module and is used to control the transmission of the environmental digital signal.

[0023] By adopting the technical solution of the above embodiment, a control processing module is introduced into the slave part to achieve fine control of the environmental digital signal transmission process. This module is not only responsible for receiving and processing the signal transmitted from the slave wireless communication module, but also can control the digital-to-analog conversion module according to the processing result to ensure the accuracy of the environmental restoration analog signal. This control mechanism improves the system's ability to manage and optimize the data transmission process, allowing the system to more flexibly adapt to different application requirements.

[0024] In some embodiments, the system also includes an analog-to-digital sampling module, which is respectively connected to the interface module and the slave control processing module. The analog-to-digital sampling module is used to obtain the analog sampling signal at the interface module and convert the analog sampling signal into a digital sampling signal. The slave control processing module is also used to perform compensation processing on the environmental restoration analog signal based on the digital sampling signal and the environmental digital signal.

[0025] By adopting the technical solution of the above embodiment, the analog-to-digital sampling module is integrated in the system to realize high-precision acquisition and digitization of the analog sampling signal at the interface module. The module can not only obtain the analog sampling signal, but also convert it into a digital sampling signal for further analysis and compensation processing by the slave control processing module. This high-precision sampling and digital processing mechanism enables the system to simulate and control the environmental conditions of the test area more accurately, improving the accuracy and reliability of environmental simulation.

[0026] One or more technical solutions provided by the present invention have at least the following technical effects or advantages: 1. Enhanced communication reliability and flexibility: By introducing the design of dual wireless communication modules and relay modules, the communication reliability of the system is significantly improved. By configuring two sets of wireless communication modules and relay modules with different communication standards, the system can intelligently switch to a better communication path based on real-time communication quality evaluation, ensuring the continuity and stability of data transmission under changing environmental conditions.

[0027] 2. Optimized data collection and processing: The present invention can dynamically adjust the sensor collection frequency and data filtering processing according to the changes in environmental information and real-time feedback of communication quality. This intelligent data collection strategy not only improves the accuracy and real-time performance of the data, but also optimizes the overall energy consumption and processing efficiency of the system by reducing unnecessary data transmission.

[0028] 3. Improved data security and simulation accuracy: The security of data transmission is enhanced and the accuracy of analog signals is improved. The security of transmitted data is ensured by implementing data encryption processing in the host control processing module. At the same time, through the compensation processing of the analog-to-digital sampling module and the slave control processing module, the system can accurately simulate the environmental conditions of the target area, providing strong technical support for high-precision environmental monitoring and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings herein are incorporated into and constitute a part of the specification, showing embodiments consistent with the present invention, and together with the specification, are used to explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 This is an architecture diagram of an analog signal transmission system based on the Internet of Things according to an embodiment of the present invention; Figure 2 Schematic diagram of the composition of the host wireless communication module and the slave wireless communication module in an embodiment of the present invention; Figure 3 This is another architecture diagram of an analog signal transmission system based on the Internet of Things according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The terms used in the following embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to be limiting of the present invention. As used in the specification of the present invention, the singular expressions "a", "a", "above", "the" and "this" are intended to also include plural expressions, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in the present invention refers to any or all possible combinations comprising one or more of the listed items.

[0031] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood as implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] It should also be noted that, unless otherwise clearly specified and limited, in the embodiments of the present invention, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components; it can be a wired communication connection or a wireless communication connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The embodiments of the present invention are described in detail below.

[0033] The embodiment of the present invention provides an analog signal transmission system based on the Internet of Things, which can make the collection, conversion, transmission and restoration process of environmental data more efficient and accurate. This embodiment can convert the analog signal captured by the environmental sensor into a digital signal, and overcome the distance limitation and signal attenuation problems in the traditional wired transmission method by using wireless communication technology, thereby ensuring the stability and reliability of data transmission. The digital signal is then restored to an analog signal, which is conducive to intuitive and accurate control of the environment of the test area. This embodiment accurately collects, transmits and restores environmental analog signals to keep the environmental conditions of the test area and the target area consistent, so that the impact of environmental information on the test operation can be intuitively and accurately understood and controlled.

[0034] like Figure 1 As shown, the analog signal transmission system based on the Internet of Things of this embodiment includes an environmental sensor 101, an analog-to-digital conversion module 102, a host wireless communication module 103, a slave wireless communication module 201, a digital-to-analog conversion module 202 and an interface module 203.

[0035] The environmental sensor 101 is used to collect environmental analog signals of the target area.

[0036] Specifically, the environmental sensor 101 is deployed in the target area and is responsible for real-time monitoring and capturing key environmental parameters, such as temperature, humidity, pressure, gas concentration, etc., and converting these physical quantities into measurable analog signals, which constitute environmental analog signals and provide raw input for subsequent data processing and environmental control. These analog signals can be in the form of continuously changing voltage or current, and usually use standard industrial signals, such as 4-20mA current signals or 0-10V voltage signals, to ensure compatibility and accuracy with existing industrial automation systems. By accurately collecting these analog signals, the environmental sensor 101 provides the entire Internet of Things system with basic data for monitoring the environmental status, enabling the system to respond and adjust to environmental changes in a timely manner.

[0037] The analog-to-digital conversion module 102 is connected to the environmental sensor 101 and is used to perform analog-to-digital conversion on the environmental analog signal to obtain an environmental digital signal.

[0038] Among them, the analog-to-digital conversion module 102 (ADC), as a key component connected to the environmental sensor 101, is responsible for accurately converting the continuous analog signal detected by the sensor into a discrete digital signal. This process involves sampling, quantizing and encoding the analog signal to generate corresponding digital values, which can then be used for digital processing and analysis. Through analog-to-digital conversion, the system is able to convert subtle changes in analog signals into a format that can be processed by digital electronic devices, thereby realizing further transmission, storage and analysis of data, providing an accurate digital foundation for IoT applications.

[0039] The host wireless communication module 103 is connected to the analog-to-digital conversion module 102 and is used to transmit an environmental digital signal.

[0040] Among them, the host wireless communication module 103 is a key transmission component in the system, which is closely connected with the analog-to-digital conversion module 102 and is responsible for sending the converted digital signal wirelessly. It uses wireless communication technology, such as LoRa (Long Range Radio), Wi-Fi or cellular network, to ensure that the signal can be stably and efficiently transmitted to the remote receiving device without physical connection, thereby realizing remote data communication and monitoring.

[0041] The slave wireless communication module 201 is in communication connection with the master wireless communication module 103 for receiving the environmental digital signal.

[0042] The slave wireless communication module 201 is deployed at the end that needs to receive data, and establishes a communication connection with the host wireless communication module 103. Its main task is to accurately receive the environmental digital signal transmitted by the host. The module has efficient signal receiving capability and strong anti-interference performance, which can ensure that the data sent by the host can be stably received under various environmental conditions, providing a reliable information source for subsequent data processing and decision-making.

[0043] The digital-to-analog conversion module 202 is connected to the slave wireless communication module 201 and is used to perform digital-to-analog conversion on the environmental digital signal to obtain an environmental restoration analog signal.

[0044] Among them, the digital-to-analog conversion module 202 (DAC) is connected to the slave wireless communication module 201 and is responsible for converting the received environmental digital signal back to its original analog form. This conversion process is the inverse process of analog-to-digital conversion, involving reconverting the digital value into a continuous voltage or current signal to obtain an analog signal that matches the original environmental parameters. The accuracy of the digital-to-analog conversion module 202 is crucial to maintaining the integrity and accuracy of the signal, ensuring that the analog signal can truly reflect the environmental state for use by subsequent control devices or monitoring systems to achieve accurate control and feedback of environmental conditions.

[0045] The interface module 203 is connected to the digital-to-analog conversion module 202 and to the environment simulation device in the test area, and is used to transmit the environment restoration analog quantity signal to the environment simulation device.

[0046] As an important part of the system, the interface module 203 is responsible for accurately transmitting the environmental restoration analog signal output by the digital-to-analog conversion module 202 to the environmental simulation device in the test area. It acts as a bridge between the digital processing world and the analog device, ensuring the integrity and stability of the signal during transmission, so that the environmental simulation device can accurately simulate the environmental conditions of the target area based on the received analog signal, thereby providing the required environmental conditions for industrial production, scientific research testing or other application scenarios. Through this precise signal transmission and simulation, the interface module 203 enables the entire system to effectively control and reproduce complex environmental conditions.

[0047] In this embodiment, the environment restoration analog signal is used to enable the environment simulation device to control the environment conditions of the test area to match the target area.

[0048] Among them, the environmental restoration analog signal is obtained after digital-to-analog conversion processing, and is used to guide the environmental simulation equipment to accurately adjust the environmental parameters of the test area, such as temperature, humidity, light, etc., so as to replicate or approach the environmental conditions of the target area as much as possible. The application of this signal ensures that the test area can simulate and restore environmental conditions similar to those of the target area, which is crucial for product testing, environmental science research, or agricultural experiments.

[0049] The analog signal transmission system of this embodiment is based on the Internet of Things technology. The analog signal is collected by the environmental sensor 101, converted into a digital signal by the analog-to-digital conversion module 102, transmitted by wireless communication technology, and finally restored to an analog signal by the digital-to-analog conversion module 202, so as to achieve remote high-precision signal collection and analysis. The interface module 203 transmits the restored analog signal to the environmental simulation device, so that the environmental conditions of the test area can accurately simulate the target area, thereby providing reliable environmental monitoring and control for industrial production and ensuring the smooth progress of the operation. Therefore, this embodiment not only reduces the wiring requirements and the cost of system deployment and maintenance through wireless transmission, but also keeps the environmental conditions of the test area and the target area consistent by collecting and restoring the environmental analog signal, so that the impact of environmental information on the test operation can be intuitively and accurately understood and controlled.

[0050] This embodiment has the ability to losslessly restore analog signals and simulate the environment in real time, and can highly unify the environment of the test area with the target environment of the actual application, which is conducive to intuitively and accurately grasping the impact of environmental information on test operations, improving the controllability, reliability and operation efficiency of the test area environment, and ensuring that tests or other operations can be carried out smoothly, efficiently and accurately in complex and changing environments.

[0051] The application of the transmission system of this embodiment can be widely used in many fields such as industrial automation, environmental monitoring, scientific research experiments, etc., to promote the innovation and development of related technologies.

[0052] The following is an example of a specific application scenario to illustrate the technical solution of this embodiment: In the field of environmental science research, especially in ecology and climatology, accurate simulation of the natural environment is crucial to understanding biological responses and climate patterns.

[0053] In an experimental scenario, researchers need to accurately simulate an outdoor forest environment in an indoor laboratory (test area) to study the adaptability of specific plants to changes in temperature and humidity. In the outdoor forest (target area), a series of environmental sensors 101 are deployed, which are responsible for real-time acquisition of key environmental analog signals such as temperature, humidity, light intensity, and soil moisture. These analog signals are then converted into environmental digital signals by the analog-to-digital conversion module 102 and sent to the receiving device in the laboratory through the host wireless communication module 103.

[0054] In the laboratory (test area), the slave wireless communication module 201 receives the environmental digital signals collected from the outdoors and transmits them to the digital-to-analog conversion module 202, which is responsible for restoring the environmental digital signals to environmental restoration analog signals. These environmental restoration analog signals are transmitted to indoor environmental simulation equipment such as precision thermostats, humidity regulators, and artificial lighting systems through the interface module 203 to accurately simulate the microclimate changes in the outdoor forest.

[0055] In this way, environmental conditions within the laboratory can be precisely adjusted to match the real-time environmental conditions in the outdoor forest, providing plants with a growth environment that is almost identical to that in nature.

[0056] The application of this analog signal transmission system not only improves the accuracy and reliability of the experiment, but also provides researchers with a controllable experimental platform, allowing them to conduct environmental simulation experiments at any time and any place. In addition, the system reduces the need for wiring through wireless communication technology, improving the flexibility and scalability of the system. Through this technology, researchers can gain a deeper understanding of the response of plants to environmental changes, providing valuable data and insights for ecological protection and biodiversity research.

[0057] In some embodiments, Figure 2 As shown, the host wireless communication module 103 includes a first host wireless communication module 1031 and a second host wireless communication module 1032, and the slave wireless communication module 201 includes a first slave wireless communication module 2011 and a second slave wireless communication module 2012; the first host wireless communication module 1031 is connected to the first slave wireless communication module 2011 through a first wireless communication network, or the second host wireless communication module 1032 is connected to the second slave wireless communication module 2012 through a second wireless communication network; the communication standard of the first wireless communication network is different from the communication standard of the second wireless communication network.

[0058] The host wireless communication module 103 of this embodiment adopts a dual module redundant design, including a first host wireless communication module 1031 and a second host wireless communication module 1032, to enhance the reliability and flexibility of communication. Similarly, the slave wireless communication module 201 also includes a first slave wireless communication module 2011 and a second slave wireless communication module 2012, which are paired with the corresponding host module for use.

[0059] Specifically, the first host wireless communication module 1031 and the first slave wireless communication module 2011 may both adopt LoRa modules, and the second host wireless communication module 1032 and the second slave wireless communication module 2012 may both adopt 4G Cat-1 wireless cellular communication modules.

[0060] Such a design allows the system to choose between a first wireless communication network (for example, using LoRa technology) and a second wireless communication network (for example, using cellular network technology, including 4G, 5G, etc.), and switch dynamically according to the actual communication environment and needs. The first wireless communication network and the second wireless communication network adopt different communication standards, so that the system can seamlessly switch to another network when a problem occurs in one network or does not meet specific requirements, thereby ensuring the continuity and stability of data transmission. This multi-network, multi-standard communication strategy significantly improves the adaptability and robustness of the system, enabling it to cope with various complex communication challenges.

[0061] In some embodiments, the system also includes a host control processing module 104, which is connected between the analog-to-digital conversion module 102 and the host wireless communication module 103. When the communication quality of the first wireless communication network is lower than the preset communication quality standard, the host control processing module 104 is used to transmit the environmental digital signal to the second host wireless communication module 1032, and the second host wireless communication module 1032 is used to transmit the environmental digital signal to the second slave wireless communication module 2012 through the second wireless communication network.

[0062] Among them, the host control processing module 104 plays the role of an intelligent decision maker, located between the analog-to-digital conversion module 102 and the host wireless communication module 103, and is responsible for real-time monitoring of the communication quality of the first wireless communication network. Once it is detected that the communication quality drops below the preset standard, such as weak signal, large interference or increased data packet loss rate, the host control processing module 104 will automatically switch the environmental digital signal to the second host wireless communication module 1032. Subsequently, the second host wireless communication module 1032 uses the second wireless communication network and adopts different communication standards or frequency bands to stably transmit the signal to the second slave wireless communication module 2012, ensuring reliable transmission and reception of the environmental digital signal.

[0063] This intelligent switching mechanism significantly improves the system's adaptability and robustness in the face of complex and changing communication environments, ensuring the real-time and accuracy of key environmental data, which is crucial for maintaining the continuity and stability of industrial production and environmental monitoring.

[0064] For example, in a field environment monitoring project, such as monitoring the ecological conditions of a distant forest, the host control processing module 104 is responsible for processing analog signals from the environmental sensors 101. When the digital signals sent by these sensors through the analog-to-digital conversion module 102 encounter signal attenuation in the first wireless communication network (such as the LoRa network) or are interfered by natural terrain, the host control processing module 104 will detect that the communication quality has decreased.

[0065] Once the communication quality is lower than the preset threshold, the host control processing module 104 will immediately start the intelligent switching mechanism to transfer the digital signal transmission task to the second host wireless communication module 1032. This second host wireless communication module 1032 may be configured to use a more stable satellite communication or a more anti-interference 4G network to ensure that the forest environment data can be reliably transmitted to the monitoring center. This intelligent switching ensures that even in harsh field conditions, key environmental monitoring data can be accurately received and analyzed.

[0066] In some embodiments, the host control processing module 104 can use a high-performance MCU (Microcontroller Unit) microcontroller as the core processing unit. The MCU microcontroller has powerful data processing capabilities and flexible control functions. It is responsible for real-time reception and processing of environmental digital signals from the analog-to-digital conversion module 102, and intelligently decides whether to switch to the second host wireless communication module 1032 for signal transmission based on the quality status of the first wireless communication network, ensuring that the entire system can operate stably and reliably in various communication environments.

[0067] In some embodiments, the host control processing module 104 is also used to obtain communication quality parameters of the first wireless communication network, determine the communication quality evaluation result of the first wireless communication network based on the communication quality parameters and the communication quality standard, and determine whether to send the environmental digital signal through the first wireless communication network based on the communication quality evaluation result.

[0068] Specifically, the host control processing module 104 actively monitors the performance of the first wireless communication network through built-in diagnostic tools and communication protocols, and obtains key communication quality parameters such as signal strength, bit error rate and data packet loss rate in real time.

[0069] The host control processing module 104 is closely integrated with the wireless communication module, and uses the application programming interface (API) provided by the wireless module or executes a specific diagnostic command to query the real-time signal strength index, such as the received signal strength indication (RSSI). At the same time, the module implements an error detection algorithm, such as a cyclic redundancy check (CRC), to check the received data packets to identify and calculate the error bits that may occur during the transmission process, thereby deriving the bit error rate. In addition, the host control processing module 104 also deploys a data packet sending and confirmation mechanism to monitor and record the loss of data packets by tracking the difference between the sent data packets and the actual received confirmation response (ACK), and then calculate the data packet loss rate. These comprehensive monitoring methods enable the host control processing module 104 to accurately evaluate the communication quality of the wireless network and provide reliable data support for the decision-making of the system.

[0070] Then, these communication quality parameters are analyzed and compared with the preset communication quality standards, and the communication quality evaluation result of the first wireless communication network can be obtained according to the comparison result.

[0071] Afterwards, the host control processing module 104 will take corresponding actions according to the communication quality evaluation results. If the evaluation results show that the communication quality of the current network meets the preset quality standards, that is, the signal strength is stable, the bit error rate is low, and the packet loss rate is within an acceptable range, the host control processing module 104 will decide to send the environmental digital signal through the first wireless communication network. On the contrary, if the communication quality evaluation results show that the communication quality does not meet the standards, the preset switching mechanism will be activated to automatically select the second wireless communication network or other backup network path to transmit data, so as to ensure the reliability and timeliness of data transmission and avoid information loss or errors caused by communication quality problems.

[0072] This intelligent decision-making process enhances the robustness of the system, ensures the effective transmission of critical environmental data, and keeps the system running efficiently even under unstable communication conditions.

[0073] In some embodiments, the host control processing module 104 is further used to obtain changes in environmental information of the target area, and control the signal collection frequency of the environmental sensor 101 according to the changes in the environmental information.

[0074] Among them, the environmental information change situation may include the change trend and rate of environmental parameters (such as temperature, humidity, light, etc.). The host control processing module 104 can analyze the environmental information change situation by analyzing the data received from the environmental sensor 101. Based on these analysis results, the host control processing module 104 dynamically adjusts the signal acquisition frequency of the environmental sensor 101 to optimize the efficiency and quality of data collection. For example, when the environment changes drastically, the acquisition frequency is increased to capture more detailed changes; when the environment is stable, the acquisition frequency is reduced to save energy and system resources. This intelligent adjustment mechanism enables the system to respond to different monitoring needs more flexibly and efficiently, while ensuring the accuracy and real-time nature of the data.

[0075] In some embodiments, the host control processing module 104 may also dynamically adjust the acquisition frequency of the environmental sensor 101 according to the energy consumption of the environmental sensor 101 and the data value of each environmental parameter.

[0076] The host control processing module 104 will determine the optimal collection frequency for each sensor based on the amount of energy consumed by the environmental sensor 101 when collecting data and the relative importance of the collected data. For those environmental sensors 101 with low energy consumption but providing critical data, the host control processing module 104 may increase their collection frequency to ensure the continuity and accuracy of the data; on the contrary, for those environmental sensors 101 with high energy consumption but relatively low data value, the collection frequency will be reduced to reduce energy consumption and extend the service life of the sensor. This strategy is designed to optimize the energy efficiency of the entire system while ensuring the availability of critical data and the overall performance of the system.

[0077] Specifically, the degree of influence of each environmental parameter on the test results can be determined based on the test operation, and then the importance of individual data can be determined. This process involves sensitivity analysis of the test results when different environmental parameters change, in order to quantify the specific contribution of each parameter to the final test results. Based on these analysis results, the importance of each environmental parameter can be ranked, thus providing a basis for dynamically adjusting the frequency of data collection and resource allocation.

[0078] For example, when conducting durability tests on new cars in the automotive industry, it may be necessary to monitor multiple environmental parameters, such as temperature, humidity, vibration, and salt spray, to evaluate their effects on paint corrosion and material aging. By designing a series of accelerated aging tests, testers can vary these environmental parameters while monitoring changes in the performance of paint and materials. Through statistical analysis, such as analysis of variance (ANOVA) or regression analysis, it can be determined which parameters have a significant impact on the degradation of material properties. If the analysis shows that temperature and humidity are the main factors affecting paint corrosion, then in actual testing, the system will increase the acquisition frequency of temperature and humidity sensors to more closely monitor changes in these key parameters to ensure the accuracy and reliability of test results. This approach enables testing resources to focus on the most critical environmental factors, improving test efficiency and data relevance.

[0079] In some embodiments, in order to dynamically adjust the acquisition frequency according to the energy consumption of the environmental sensor 101 and the data value of each environmental parameter, the host control processing module 104 can be implemented by the following algorithm: 1. Define parameters: P i : Energy consumption of the i-th environmental sensor 101 (for example, expressed as energy consumption rate).

[0080] V j : The data value score of the j-th environmental parameter.

[0081] F j (t): The rate of change of the jth environmental parameter at time t.

[0082] T j : The current collection frequency of the jth environmental parameter.

[0083] 2. Initialization: Set initial energy consumption and data value scores for each environmental sensor 101 and environmental parameter; determine initial collection frequency.

[0084] 3. Dynamic adjustment algorithm: 3.1) For each environmental parameter j, calculate the dynamic score V of its data value j (t): V j (t) = V j ×α×F j (t); Among them, α is the adjustment coefficient, which is used to adjust the data value according to the rate of change of environmental parameters.

[0085] 3.2) Calculate the weighted score W based on data value and sensor energy consumption: Here, ∈ is a small constant that prevents the denominator from being zero.

[0086] 3.2) Adjust the acquisition frequency T according to the weighted score j (t): T j (t+1)=T j (t)×(1+β×(W j (t)-1)); Among them, β is the adjustment rate coefficient, which is used to control the adjustment speed of the acquisition frequency.

[0087] 4. Update and Iteration: In each time period, V is updated according to the latest environmental data and energy consumption data. j (t) and T j (t). Repeat step 3 until the system shuts down or conditions change.

[0088] In this embodiment, the algorithm optimizes the efficiency and energy consumption of data collection by dynamically adjusting the acquisition frequency. By considering the rate of change of environmental parameters, the algorithm can increase the acquisition frequency for rapidly changing environmental parameters and reduce the acquisition frequency for stable parameters. The adjustment coefficients α and β in the algorithm can be adjusted according to the actual application scenario to adapt to different performance requirements.

[0089] This algorithm provides a flexible and efficient method for dynamically adjusting the acquisition frequency according to the energy consumption and data value of the environmental sensor 101, thereby optimizing energy usage and system performance while ensuring data quality.

[0090] In some embodiments, the host control processing module 104 is further used to encrypt the environmental digital signal to obtain an encrypted environmental digital signal.

[0091] Specifically, the host control processing module 104 uses an advanced encryption algorithm to encrypt the environmental digital signal before sending it. This process involves encoding the data with a key to ensure that only the recipient with the correct key can decrypt and access the original data. The module may use a symmetric encryption algorithm (such as AES) or an asymmetric encryption algorithm (such as RSA), depending on the system's security requirements and resource constraints. The encryption process not only protects the data in transit from unauthorized access and tampering, but also enhances the data security of the entire Internet of Things system. After the encryption is completed, the encrypted environmental digital signal is securely transmitted to the designated receiving device through the wireless communication module, ensuring the confidentiality of sensitive information and the integrity of the system.

[0092] In some embodiments, the host control processing module 104 is further used to filter the environmental digital signal to obtain a filtered environmental digital signal.

[0093] Among them, the host control processing module 104 has a digital signal processing function, which uses a specific algorithm to filter the environmental digital signal to eliminate noise and interference and improve the accuracy and reliability of the signal. This process involves the application of digital filtering technologies such as low-pass filters, high-pass filters or band-pass filters to remove unnecessary frequency components in the signal according to system requirements and environmental characteristics. After filtering, the filtered environmental digital signal obtained is more stable and closer to the real environmental state, providing higher quality data support for subsequent data analysis and decision-making.

[0094] In some embodiments, Figure 3 As shown, the system also includes a relay module 301, which is connected between the first host wireless communication module 1031 and the first slave wireless communication module 2011. The relay module 301 is used to enhance the environmental digital signal and then transmit it to the first slave wireless communication module 2011.

[0095] In this embodiment, in order to enhance the transmission effect of the signal and expand the communication coverage, a relay module 301 is specially designed, which is arranged on the communication path between the first host wireless communication module 1031 and the first slave wireless communication module 2011. The function of the relay module 301 is to receive, enhance and retransmit the environmental digital signal sent by the host wireless communication module 103, ensuring that even if the signal is attenuated or interfered by obstacles during the transmission process, it can maintain its strength and quality through the amplification effect of the relay module 301, so as to be effectively transmitted to the first slave wireless communication module 2011. This relay mechanism significantly improves the reliability of communication, and is particularly suitable for application scenarios with complex geographical environments or long communication distances, ensuring that the entire system can operate stably in various environments.

[0096] In some embodiments, Figure 1-3 As shown, the system further includes a slave control processing module 204 , which is connected between the slave wireless communication module 201 and the digital-to-analog conversion module 202 and is used to control the transmission of the environmental digital signal.

[0097] In this embodiment, the slave control processing module 204 plays a key intermediary role, and is located on the transmission link between the slave wireless communication module 201 and the digital-to-analog conversion module 202. This module is responsible for performing necessary processing and control on the received environmental digital signal, including but not limited to signal decoding, verification, and further optimization and adjustment of the signal when necessary.

[0098] In addition, the slave control processing module 204 is also responsible for managing and coordinating the signal transmission process, ensuring that the data can be accurately transmitted to the digital-to-analog conversion module 202 after being received by the slave wireless communication module 201, and finally converted into an analog signal for controlling the environmental conditions of the test area. Through this fine control, the slave control processing module 204 improves the efficiency and accuracy of data transmission, ensuring the accuracy and response speed of the entire system to environmental simulation.

[0099] In some embodiments, Figure 3 As shown, the system also includes an analog-to-digital sampling module 205, which is connected to the interface module 203 and the slave control processing module 204 respectively. The analog-to-digital sampling module 205 is used to obtain the analog sampling signal at the interface module 203 and convert the analog sampling signal into a digital sampling signal. The slave control processing module 204 is also used to compensate the environmental restoration analog signal according to the digital sampling signal and the environmental digital signal.

[0100] The analog-to-digital sampling module 205 is responsible for real-time capture and digitization of the analog sampling signal at the interface module 203. Through a high-precision analog-to-digital conversion process, the analog-to-digital sampling module 205 converts the continuous analog sampling signal into a discrete digital sampling signal, thereby facilitating further processing and analysis by the digital system. The converted digital sampling signal is then transmitted to the slave control processing module 204.

[0101] After receiving the digital sampling signal, the slave control processing module 204 will compare and analyze it with the original environmental digital signal to identify the difference between the two. Using the preset data processing algorithm, the slave control processing module 204 can accurately calculate the necessary compensation values, which reflect the adjustment required from the original environment to the test environment. Subsequently, the module applies these compensation values ​​to the environmental restoration analog signal, and by adjusting the amplitude, phase or other relevant parameters of the signal, ensures that the final output environmental restoration analog signal is basically consistent with the environmental analog signal collected by the environmental sensor 101, and can accurately restore and reproduce the target environmental conditions.

[0102] This compensation processing not only improves the accuracy of the analog signal, but also enhances the system's adaptability and control accuracy to different environmental conditions, so that the environmental conditions in the test area can more realistically simulate the target area, providing reliable environmental conditions for various tests and research.

[0103] In some embodiments, Figure 3 As shown, the analog signal transmission system can be divided into a host part 100 and a slave part 200. The host part 100 includes an environmental sensor 101, an analog-to-digital conversion module 102, a host control processing module 104, and a host wireless communication module 103. The slave part 200 includes a slave wireless communication module 201, a slave control processing module 204, a digital-to-analog conversion module 202, an interface module 203, and an analog-to-digital sampling module 205. The host part 100 and the slave part 200 are connected via a relay module 301.

[0104] Because the environmental sensor 101 of the host part 100 collects data in near real time, the collected data is very accurate. Then the collected data is transmitted through wireless data transmission, because the data transmission between the host part 100 and the slave part 200 is carried out through the wireless module (host wireless communication module 103 and slave wireless communication module 201) to transmit data packets, and the data is sent after encryption and verification, and the data receiving part will also decrypt and verify the received data packets.

[0105] In addition, if there is accidental data packet loss, the system will also start the retransmission mechanism to ensure the correctness of the data, so the collected data and the restored data are very accurate.

[0106] The slave part 200 restores the analog quantity. Since the standard analog quantity data (environmental analog quantity data) that needs to be restored is already known, if the data deviation is found in the feedback acquisition part, reverse digital compensation can be performed in real time to make the restored data reach very high accuracy, ensuring that the environmental conditions of the test area and the target area are basically consistent.

[0107] In complex industrial or scientific research environments, multiple analog signal transmission systems can be deployed, each equipped with unique ID information. This design allows multiple sets of equipment to operate in parallel at the same site, while each set of equipment maintains its independence and uses its own ID for identification and data transmission during wireless communication. Such measures ensure the accuracy of data transmission and the stability of the system, and avoid data crosstalk between different devices. Even in places with complex electromagnetic environments or dense equipment, each system can maintain an efficient working state, independently collect and process its own environmental data, and do not interfere with each other. Combined with data encryption, each set of equipment can communicate independently, and multiple sets of equipment can work independently, and their data will not interfere with each other.

[0108] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An analog signal transmission system based on the Internet of Things, characterized in that: include: Environmental sensor, used to collect environmental analog signals of the target area; An analog-to-digital conversion module, connected to the environmental sensor, for performing analog-to-digital conversion on the environmental analog signal to obtain an environmental digital signal; A host wireless communication module, connected to the analog-to-digital conversion module, for transmitting the environmental digital signal; A slave wireless communication module, connected to the host wireless communication module for receiving the environmental digital signal; A digital-to-analog conversion module, connected to the slave wireless communication module, for performing digital-to-analog conversion on the environmental digital signal to obtain an environmental restoration analog signal; An interface module, connected to the digital-to-analog conversion module and to the environmental simulation device in the test area, and used for transmitting the environmental restoration analog quantity signal to the environmental simulation device; The environmental restoration analog signal is used to enable the environmental simulation device to control the environmental conditions of the test area to match the target area.

2. The system according to claim 1, characterized in that The host wireless communication module includes a first host wireless communication module and a second host wireless communication module, and the slave wireless communication module includes a first slave wireless communication module and a second slave wireless communication module; the first host wireless communication module is connected to the first slave wireless communication module via a first wireless communication network, or the second host wireless communication module is connected to the second slave wireless communication module via a second wireless communication network; the communication standard of the first wireless communication network is different from the communication standard of the second wireless communication network.

3. The system according to claim 2, characterized in that It also includes a host control processing module, which is connected between the analog-to-digital conversion module and the host wireless communication module. When the communication quality of the first wireless communication network is lower than a preset communication quality standard, the host control processing module is used to transmit the environmental digital signal to the second host wireless communication module, and the second host wireless communication module is used to transmit the environmental digital signal to the second slave wireless communication module through the second wireless communication network.

4. The system according to claim 3, characterized in that The host control processing module is also used to obtain the communication quality parameters of the first wireless communication network, determine the communication quality evaluation result of the first wireless communication network according to the communication quality parameters and the communication quality standard, and determine whether to send the environmental digital signal through the first wireless communication network according to the communication quality evaluation result.

5. The system according to claim 3, characterized in that The host control processing module is also used to obtain changes in environmental information of the target area, and control the signal collection frequency of the environmental sensor according to the changes in the environmental information.

6. The system according to claim 3, characterized in that The host control processing module is also used to encrypt the environmental digital signal to obtain an encrypted environmental digital signal.

7. The system according to claim 3, characterized in that The host control processing module is also used to filter the environmental digital signal to obtain a filtered environmental digital signal.

8. The system according to claim 2, characterized in that It also includes a relay module connected between the first host wireless communication module and the first slave wireless communication module, and the relay module is used to enhance the environmental digital signal and then transmit it to the first slave wireless communication module.

9. The system according to any one of claims 1 to 8, characterized in that: It also includes a slave control processing module, which is connected between the slave wireless communication module and the digital-to-analog conversion module and is used to control the transmission of the environmental digital signal.

10. The system according to claim 9, characterized in that It also includes an analog-to-digital sampling module, which is connected to the interface module and the slave control processing module respectively. The analog-to-digital sampling module is used to obtain the analog sampling signal at the interface module and convert the analog sampling signal into a digital sampling signal. The slave control processing module is also used to compensate the environmental restoration analog signal according to the digital sampling signal and the environmental digital signal.

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