Intelligent upgrading and reconstruction system and method for sensor

Abstract

The embodiment of the invention provides an intelligent upgrading and reconstruction system and method for a sensor, the system comprises a sending module and a control cabinet, one end of the sending module is connected with the sensor, and the other end of the sending module is connected with the control cabinet; the sending module is used for collecting an analog current signal output by the sensor, converting the analog current signal into a digital signal, analyzing sensing data according to the digital signal to obtain a sensing data analysis result, determining the running state of the sensor, converting the digital signal into an analog signal, and transmitting the analog signal and the analog current signal into the control cabinet; the control cabinet is used for demodulating and processing the analog current signal and obtaining an output analysis result; according to the invention, the analog current signal of the sensor can be collected in real time through the sending module, and is quickly converted into a digital signal for processing, so that the real-time analysis and on-site diagnosis of the sensor data and the monitoring of the operation state of the sensor are realized, no extra communication cable needs to be laid, and the operation cost and the maintenance workload are reduced.

Description

Technical Field

[0001] The present invention relates to the field of sensor technology, and in particular to a sensor intelligent upgrading and transformation system and method. Background Art

[0002] With the development of chip and communication technology, some industrial sites choose to use "ordinary sensors + remote input and output modules + communication cables" to complete the measurement, sampling and transmission of physical quantities. This technology uses digital electrical signals as the transmission carrier of physical quantities. It has the characteristics of large data capacity, rich transmission information, and less on-site wiring. However, most of the sensors at business sites such as hydropower stations, photovoltaic power stations, and energy storage power stations are ordinary sensors. If the "ordinary sensors + remote input and output modules + communication cables" method is used for technical transformation, a large number of remote input and output modules will be required, and communication cables will need to be laid separately, increasing the cost of on-site technical transformation and the workload of subsequent operation and maintenance. Summary of the invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a sensor intelligent upgrading and transformation system and method that overcomes the above problems or at least partially solves the above problems.

[0004] In order to solve the above problems, an embodiment of the present invention discloses a sensor intelligent upgrading and transformation system, the system includes a sending module and a control cabinet, one end of the sending module is connected to the sensor, and the other end of the sending module is connected to the control cabinet;

[0005] The sending module is used to collect the analog current signal output by the sensor, convert the analog current signal into a digital signal, analyze the sensor data according to the digital signal to obtain a sensor data analysis result, and determine the operating state of the sensor, convert the operating state of the sensor and the sensor data analysis result into an analog signal, and send the analog current signal, the operating state of the sensor in the form of an analog signal, and the sensor data analysis result to the control cabinet through the channel corresponding to the sensor;

[0006] The control cabinet is used to analyze the analog current signal, the operating status of the sensor in the form of the analog signal and the sensor data analysis result to obtain an analysis result, and output the analysis result.

[0007] Optionally, the sending module further includes an analog-to-digital converter, an analog signal delay circuit, and a first analog signal isolation distributor, one end of the first analog signal isolation distributor is connected to the sensor, and the other end of the first analog signal isolation distributor is respectively connected to the analog-to-digital converter and the analog signal delay circuit;

[0008] The first analog signal isolation distributor is used to collect the analog current signal and send the analog current signal to the analog-to-digital converter and the analog signal delay circuit respectively;

[0009] The analog-to-digital converter is used to perform analog-to-digital conversion on the analog current signal to obtain the digital signal;

[0010] The analog signal delay circuit is used to obtain a delay time length, and send the analog current signal to the control cabinet according to the delay time length.

[0011] Optionally, the analog signal delay circuit includes one of a capacitor-inductor delay line, an optical fiber delay line, and an analog phase shifter.

[0012] Optionally, the sending module also includes a single-chip microcomputer, which is connected to the analog-to-digital converter, and is used to obtain the digital signal sent by the analog-to-digital converter, and query the operating status of the sensor in a preset mapping relationship according to the digital signal, and the preset mapping relationship includes a mapping relationship between multiple digital signals and operating status.

[0013] Optionally, the control cabinet includes a receiving module, a second analog signal isolation distributor, and a controller, the second analog signal isolation distributor is connected to the receiving module and the controller respectively, and the receiving module is connected to the controller;

[0014] The second analog signal isolation distributor is used to receive the analog current signal and the operating state of the sensor in the form of an analog signal and the sensor data analysis result sent by the sending module, send the analog current signal to the controller, and send the operating state of the sensor in the form of an analog signal and the sensor data analysis result to the receiving module;

[0015] The receiving module is used to convert the operating state of the sensor in the form of analog signals and the sensor data analysis result into the operating state of the sensor in the form of digital signals and the sensor data analysis result, and send the operating state of the sensor in the form of digital signals and the sensor data analysis result to the controller;

[0016] The controller is used to perform similar feature matching according to the operating status of the sensor in the form of a digital signal, the sensor data analysis result and the analog current signal to obtain a digital signal offset, perform frequency domain calculation according to the digital signal offset to obtain a high-frequency signal value, and analyze the high-frequency signal value to obtain an analysis result.

[0017] Optionally, the receiving module includes an analog-to-digital sampler, which is used to collect the operating status of the sensor in the form of an analog signal and the sensor data analysis result, and convert the operating status of the sensor in the form of an analog signal into the operating status of the sensor in the form of a digital signal and the sensor data analysis result.

[0018] Optionally, the analog-to-digital sampler is further used to obtain coding information, encode the packaged data packet according to the coding information to obtain an encoded data packet, and send the encoded data packet to the controller.

[0019] Optionally, the coding information includes at least one of an error detection and correction code and a binary code.

[0020] Optionally, the analog-to-digital sampler is further used to package the operating status of the sensor in the form of a digital signal and the sensor data analysis result according to a preset protocol, and send the packaged data packet to the controller;

[0021] The controller is used to parse the packaged data packet according to the preset protocol to obtain the operating status of the sensor in the form of a digital signal and the sensor data analysis result.

[0022] Optionally, the receiving module further includes a channel control and encoding module, and the channel control and encoding module is used to receive a control signal from the controller, and perform switch control on a target channel of the analog-to-digital sampler according to the controller signal.

[0023] Optionally, the system further includes a power module, which is connected to the sending module and is used to supply power to the sending module.

[0024] Optionally, the control cabinet is also connected to a computer monitoring system, and the control cabinet is used to send the analysis result to the computer monitoring system, and the computer monitoring system is used to issue a reminder message when the analysis result shows that the operating status of the sensor is abnormal.

[0025] Optionally, the computer monitoring system is further used to determine the abnormality level of the sensor operating state when the sensor operating state is abnormal, and issue a reminder message according to the abnormality level of the sensor operating state.

[0026] The present invention also discloses a sensor intelligent upgrading and transformation method, the method comprising:

[0027] Collecting the analog current signal output by the sensor, converting the analog current signal into a digital signal, analyzing the sensor data according to the digital signal to obtain a sensor data analysis result, and determining the operating state of the sensor;

[0028] The operating status of the sensor and the sensor data analysis result are converted into analog signals, and the analog current signal, the operating status of the sensor in the form of analog signals, and the sensor data analysis result are sent to the control cabinet, so that the control cabinet analyzes the analog current signal, the operating status of the sensor in the form of analog signals, and the sensor data analysis result to obtain analysis results, and outputs the analysis results.

[0029] Optionally, determining the operating state of the sensor according to the digital signal includes:

[0030] The operating state of the sensor is queried in a preset mapping relationship according to the digital signal, and the preset mapping relationship includes a plurality of mapping relationships between digital signals and operating states.

[0031] The embodiments of the present invention include the following advantages:

[0032] The present invention discloses a sensor intelligent upgrading and transformation system. The present invention can collect the analog current signal output by the sensor through a sending module, convert the analog current signal into a digital signal, analyze the sensor data analysis result and the sensor operation status according to the digital signal, and after converting the digital signal into an analog signal, transmit it together with the analog current signal to a control cabinet; the control cabinet is used for demodulating and processing the analog current signal, and obtaining an output analysis result; the present invention can collect the analog current signal of the sensor in real time through the sending module, and quickly convert it into a digital signal for processing, thereby realizing real-time analysis and on-site diagnosis of the sensor data, as well as monitoring of the sensor operation status, without the need to lay additional communication cables, thereby reducing operation costs and maintenance workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural block diagram of a sensor intelligent upgrading and transformation system provided by an embodiment of the present invention.

[0034] Figure 2 is a structural block diagram of a sending module provided by an embodiment of the present invention;

[0035] Figure 3 is a structural block diagram of a control cabinet provided by an embodiment of the present invention;

[0036] Figure 4 is a structural block diagram of a receiving module provided by an embodiment of the present invention;

[0037] Figure 5 It is a structural block diagram of another sensor intelligent upgrading and transformation system provided by an embodiment of the present invention;

[0038] Figure 6It is a flowchart of the steps of a sensor intelligent upgrading and transformation method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] In clean energy power stations such as hydropower stations, photovoltaic power stations, and energy storage power stations, physical quantities such as temperature, pressure, flow, and displacement are generally converted into electrical signals for transmission. The transmission process can be divided into sensor transmission technology and communication transmission technology according to the signal type. The characteristics of each transmission technology are as follows: (1) Sensor transmission technology. This technology usually uses industrial cables to transmit analog electrical signals (4-20mA current signals or 0-5V voltage signals) output by electrical sensors. Since current signals have the characteristics of high safety, long transmission distance, and strong anti-interference, 4-20mA analog current is generally used as the standard transmission signal of this transmission technology in industrial sites. (2) Communication transmission technology. With the development of chip and communication technology, some industrial sites choose to use "intelligent sensors + communication cables" or "ordinary sensors + remote input and output modules + communication cables" to complete the measurement, sampling, and transmission of physical quantities. This technology uses digital electrical signals as the transmission carrier of physical quantities, and has the characteristics of large data capacity, rich transmission information, and a small number of on-site wiring.

[0041] In comparison, communication transmission technology has more obvious technical advantages and is an important technical trend for on-site sensor data transmission in the future. However, most of the sensors on the business sites of hydropower stations, photovoltaic power stations, energy storage power stations, etc. are ordinary sensors. If they are all technically transformed in the form of "ordinary sensors + remote input and output modules + communication cables", a large number of remote input and output modules will be required, and communication cables will need to be laid separately, which will increase the cost of on-site technical transformation and the workload of later operation and maintenance.

[0042] One of the core concepts of the embodiment of the present invention is that the analog current signal output by the sensor can be collected through the sending module, the analog current signal can be converted into a digital signal, the sensor data analysis result and the sensor operating status can be analyzed according to the digital signal, and after the digital signal is converted into an analog signal, it is transmitted to the control cabinet together with the analog current signal; the control cabinet is used to demodulate and process the analog current signal, and obtain the output analysis result; the present invention can collect the analog current signal of the sensor in real time through the sending module, and quickly convert it into a digital signal for processing, thereby realizing real-time analysis and on-site diagnosis of the sensor data, as well as sensor operating status monitoring, without the need for additional laying of communication cables, reducing operating costs and maintenance workload; through continuous monitoring and analysis of the sensor operating status, the system can promptly issue an early warning when the sensor is abnormal or about to fail, which is helpful for preventive maintenance and reducing production interruptions.

[0043] Reference Figure 1 , shows a structural block diagram of a sensor intelligent upgrading and transformation system 10 provided in an embodiment of the present invention, the system may include a sending module 101 and a control cabinet 102, one end of the sending module 101 is connected to the sensor 20, and the other end of the sending module 101 is connected to the control cabinet 102;

[0044] The sending module is used to collect the analog current signal output by the sensor, convert the analog current signal into a digital signal, analyze the sensor data according to the digital signal to obtain the sensor data analysis result, and determine the operating status of the sensor, convert the operating status of the sensor and the sensor data analysis result into an analog signal, and send the analog current signal, the operating status of the sensor in the form of an analog signal and the transmitted sensor data analysis result to the control cabinet through the channel corresponding to the sensor.

[0045] In an embodiment of the present invention, the sensor 20 may be a flow sensor, a temperature sensor, or a humidity sensor in a hydropower station. The sensor may output a 4-20 mA analog current signal, and the output interface may be a two-wire, three-wire, or four-wire system. The sending module 101 may collect the analog current signal output by the sensor, and then convert the analog current signal into a digital signal, and then analyze and diagnose the digital signal to determine the operating state of the sensor and the sensor data analysis result transmitted by the sensor. After obtaining the operating state of the sensor and the sensor data analysis result transmitted in the form of digital signals, the operating state of the sensor and the sensor data analysis result transmitted in the form of digital signals may be converted into the operating state and the sensor data analysis result of the sensor in the form of analog signals, and then the analog current signal, the operating state of the sensor and the sensor data analysis result in the form of analog signals may be sent to the control cabinet 102.

[0046] It should be noted that different sensors can be transmitted through different transmission channels. For example, the flow sensor is set to channel 1 for transmission, the temperature sensor is set to channel 2 for transmission, and the pressure sensor is set to channel 3 for transmission. If the sending module collects data from the temperature sensor, channel 2 can be used to transmit the sensor's operating status and sensor data analysis results in the form of analog current signals and analog signals.

[0047] The sensor data analysis result refers to the result obtained by analyzing the sensor data collected by the sensor (which may refer to parameters such as temperature, current, flow, etc., and the specific one is not limited here), including feature extraction, abnormality monitoring, etc.

[0048] The control cabinet is used to analyze the analog current signal, the operating status of the sensor in the form of the analog signal, and the sensor data analysis result to obtain the analysis result, and output the analysis result.

[0049] In an embodiment of the present invention, the control cabinet 102 can receive the analog current signal of the sensor and the operating status of the sensor in the form of an analog signal sent by the sending module 101, and then parse to obtain the analysis result, and then output the analysis result. The analysis result may include whether the operating status of the sensor is normal and whether the transported sensor data analysis result is normal. The user processes the sensor according to the analysis result. The present invention converts the operating status of the sensor into an analog signal and sends it to the control cabinet. The system can provide instant status feedback to help operators or automation systems quickly understand the current status of the sensor.

[0050] The present invention discloses a sensor intelligent upgrading and transformation system, which can collect analog current signals output by sensors through a sending module, convert the analog current signals into digital signals, analyze sensor data analysis results and sensor operating states according to the digital signals, and after converting the digital signals into analog signals, transmit them together with the analog current signals to a control cabinet; the control cabinet is used for demodulating and processing the analog current signals, and obtaining output analysis results; the present invention can collect analog current signals of sensors in real time through a sending module, and quickly convert them into digital signals for processing, thereby realizing real-time analysis and on-site diagnosis of sensor data, as well as sensor operating state monitoring, without the need for additional laying of communication cables, thereby reducing operating costs and maintenance workload; through continuous monitoring and analysis of the sensor operating state, the system can promptly issue an early warning when the sensor is abnormal or about to fail, which is helpful for preventive maintenance and reducing production interruptions.

[0051] In one embodiment of the present invention, the sending module further includes an analog-to-digital converter, an analog signal delay circuit, and a first analog signal isolation distributor, one end of the first analog signal isolation distributor is connected to the sensor, and the other end of the first analog signal isolation distributor is respectively connected to the analog-to-digital converter and the analog signal delay circuit;

[0052] The first analog signal isolation distributor is used to collect analog current signals and send the analog current signals to the analog-to-digital converter and the analog signal delay circuit respectively;

[0053] The analog-to-digital converter is used to perform analog-to-digital conversion on the analog current signal to obtain a digital signal;

[0054] The analog signal delay circuit is used to obtain the delay time and send the analog current signal to the control cabinet according to the delay time.

[0055] In the embodiment of the present invention, Figure 2 , shows a structural block diagram of a sending module 101 provided in an embodiment of the present invention, the sending module 101 may include an analog-to-digital converter 1012, a first analog signal isolation distributor 1011, and an analog signal delay circuit 1013 connected;

[0056] An analog signal isolation distributor is an electronic device used to distribute the output of an analog signal source to multiple output channels while maintaining the isolation and integrity of the signal. This device is very useful in industrial automation, process control, instrumentation, and communication systems because it prevents signals from being interfered by electrical noise, protects the signal source from being affected by external circuits, and enables multi-point transmission of signals.

[0057] The first analog signal isolation distributor 1011 can collect the analog current signal output by the sensor, and then send the analog current signal to the analog-to-digital converter 1012 and the analog signal delay circuit 1013 respectively;

[0058] ADC (Analog-to-Digital Converter, referred to as analog-to-digital converter) is an electronic device used to convert continuously changing analog signals into discrete digital signals. This conversion is a key step in digital signal processing, data acquisition and control systems because it allows analog signals to be processed and analyzed by digital computers or microprocessors. The analog-to-digital converter 1012 of the present invention is used to sample analog current signals into digital signals composed of 1 and 0, with a sampling accuracy of 8 bits or 12 bits.

[0059] The analog signal delay circuit 1013 is an electronic circuit used to delay the input analog signal for a certain period of time before outputting it. This circuit is very useful in the fields of communication systems, audio processing, video processing, and radar systems because it can be used to synchronize signals, eliminate echoes, and achieve signal phase adjustment.

[0060] In one embodiment of the present invention, the analog signal delay circuit includes one of a capacitor-inductor delay line, an optical fiber delay line, and an analog phase shifter.

[0061] In the embodiments of the present invention, the analog signal delay circuit can generally implement signal delay using the following technologies:

[0062] Transmission line delay line: Use a specific length of transmission line (such as coaxial cable) to physically delay a signal. The speed at which a signal can propagate in a transmission line is finite, so by choosing the appropriate length of transmission line, the desired delay can be achieved.

[0063] Capacitor-inductor (LC) delay line: Uses a combination of inductors and capacitors to create a filter network through which the signal is delayed. This type of delay line can be designed to have a specific frequency response and delay time.

[0064] Analog phase shifter: Delay is achieved by changing the phase of the signal. In some applications, variable capacitors or variable inductors can be used to adjust the phase of the signal, thereby indirectly adjusting the delay time of the signal.

[0065] Digital Delay Line: Although the name has "digital" in it, digital delay lines can also be used to delay analog signals. In this method, the analog signal is first converted to a digital signal, then delayed by a digital delay line (such as a shift register), and finally converted back to an analog signal.

[0066] Fiber optic delay lines: In certain high-speed or long-distance applications, optical fiber can be used to delay analog signals. The signal is first converted to an optical signal, transmitted through the fiber, and then converted back to an electrical signal.

[0067] The specific method to be adopted is not limited here. The present invention can realize the synchronous transmission of analog current signals and digital signals through analog signal delay circuits, which helps to improve the accuracy and consistency of data analysis.

[0068] In one embodiment of the present invention, the sending module also includes a single-chip microcomputer, which is connected to the analog-to-digital converter. The single-chip microcomputer is used to obtain the digital signal sent by the analog-to-digital converter, and query the operating status of the sensor in a preset mapping relationship according to the digital signal. The preset mapping relationship includes a mapping relationship between multiple digital signals and operating status.

[0069] In the embodiment of the present invention, Figure 2 The sending module 101 may also include a single-chip microcomputer 1014, which is connected to the analog-to-digital converter 1012. The single-chip microcomputer 1014 can obtain the digital signal sent by the analog-to-digital converter 1012, and then query the operating status of the sensor corresponding to the digital signal according to a pre-stored preset mapping relationship. For example, a digital signal 1 may correspond to the normal operation of the sensor, and a digital signal 0 may indicate that the sensor is overheated or faulty.

[0070] In one embodiment of the present invention, the sending module also includes a digital-to-analog converter, which is connected to the microcontroller and the control cabinet respectively, and is used to convert the operating status of the sensor in the form of a digital signal sent by the microcontroller into the operating status of the sensor in the form of an analog signal.

[0071] It should be noted that how to specifically set the mapping relationship between the digital signal and the operating state can be set according to user needs and is not limited here.

[0072] In the embodiment of the present invention, Figure 2The sending module 101 may also include a digital-to-analog converter 1015, which is connected to the single-chip computer 1014 and the control cabinet 102 respectively. The digital-to-analog converter can convert the operating status of the sensor and the sensor data analysis results in the form of digital signals sent by the single-chip computer 1014 into the operating status of the sensor and the sensor data analysis results in the form of analog signals. The DAC receives the digital signal sent by the single-chip computer and converts it into a corresponding analog current signal. The conversion accuracy depends on the resolution of the DAC. For example, an 8-bit, 12-bit or 16-bit DAC can convert the digital signal into 256, 4096 or 65536 different analog levels.

[0073] In one embodiment of the present invention, the control cabinet includes a receiving module, a second analog signal isolation distributor, and a controller, the second analog signal isolation distributor is connected to the receiving module and the controller respectively, and the receiving module is connected to the controller;

[0074] The second analog signal isolation distributor is used to receive the analog current signal and the operating status of the sensor in the form of an analog signal and the sensor data analysis result sent by the sending module, send the analog current signal to the controller, and send the operating status of the sensor in the form of an analog signal and the sensor data analysis result to the receiving module;

[0075] The receiving module is used to convert the operating status of the sensor and the sensor data analysis result in the form of analog signals into the operating status of the sensor and the sensor data analysis result in the form of digital signals, and send the operating status of the sensor and the sensor data analysis result in the form of digital signals to the controller;

[0076] The controller is used to perform similar feature matching according to the operating status of the sensor in the form of a digital signal, the sensor data analysis result and the analog current signal to obtain a digital signal offset, perform frequency domain calculation according to the digital signal offset to obtain a high-frequency signal value, and analyze the high-frequency signal value to obtain an analysis result.

[0077] In the embodiment of the present invention, Figure 3 , showing a structural block diagram of a control cabinet 102 provided in an embodiment of the present invention, the control cabinet 102 may include a receiving module 1022, a controller 1023, and a second analog signal isolation distributor, the second analog signal isolation distributor 1021 may receive the analog current signal sent by the sending module 101 and the operating status of the sensor in the form of an analog signal, and the sensor data analysis result, and then send the analog current signal to the controller 1023, and send the operating status of the sensor in the form of an analog signal and the sensor data analysis result to the receiving module 1022.

[0078] The receiving module 1022 can convert the operating status of the sensor and the sensor data analysis results in the form of analog signals into the operating status of the sensor and the sensor data analysis results in the form of digital signals, and send the operating status of the sensor and the sensor data analysis results in the form of digital signals to the controller 1023.

[0079] After the controller 1023 receives the operating status of the sensor and the sensor data analysis results in the form of analog current signals and digital signals, it can perform similar feature matching based on the operating status of the sensor and the sensor data analysis results in the form of digital signals and the analog current signal to obtain a digital signal offset. The controller 1023 uses fast Fourier transform (FFT) or other frequency domain analysis techniques to convert the digital signal to the frequency domain. In the frequency domain, the controller 1023 can identify and extract high-frequency signal values, perform frequency domain calculations based on the digital signal offset to obtain high-frequency signal values, and analyze the high-frequency signal values ​​to obtain analysis results.

[0080] It should be noted that the controller is a programmable logic controller commonly found in industrial control systems. PLC (Programmable Logic Controller) is a digital computer specially designed for industrial environments and used for automated control processes. PLC can perform tasks such as logical operations, sequential control, timing, counting and arithmetic operations.

[0081] In one embodiment of the present invention, the receiving module includes an analog-to-digital sampler, which is used to collect the operating status of the sensor and the sensor data analysis results in the form of analog signals, and convert the operating status of the sensor and the sensor data analysis results in the form of analog signals into the operating status of the sensor and the sensor data analysis results in the form of digital signals.

[0082] In the embodiment of the present invention, Figure 4 , shows a structural block diagram of a receiving module 1022 provided in an embodiment of the present invention. The receiving module 1022 may include an analog-to-digital sampler 10221, which is used to collect the operating status of the sensor and the sensor data analysis results in the form of analog signals, and convert the operating status of the sensor and the sensor data analysis results in the form of analog signals into the operating status of the sensor in the form of digital signals.

[0083] In one embodiment of the present invention, the analog-to-digital sampler is also used to package the operating status of the sensor in the form of a digital signal according to a preset protocol, and send the packaged data packet to the controller; the controller is used to parse the packaged data packet according to the preset protocol to obtain the operating status of the sensor in the form of a digital signal.

[0084] In an embodiment of the present invention, the analog-to-digital sampler 10221 can package the original data into a specific format according to a preset protocol, including adding header information (such as source address, destination address, data type, serial number, etc.) and tail information (such as checksum, end mark, etc.), and then send the packaged data packet to the controller 1023. The controller 1023 can parse the header and tail information of the data packet according to the preset protocol, extract the original data, and parse the header information to determine the source, destination, type and other related parameters of the data.

[0085] In one embodiment of the present invention, the analog-to-digital sampler is further used to obtain coding information, encode the packaged data packet according to the coding information to obtain an encoded data packet, and send the encoded data packet to the controller.

[0086] The encoded information may include at least one of an error detection and correction code and a binary code.

[0087] In an embodiment of the present invention, the analog-to-digital sampler may also encode the packaged data to ensure its integrity and reliability during transmission, which may include using specific encoding schemes (such as ASCII, UTF-8, binary encoding, etc.) and error detection and correction codes (such as CRC, Hamming code, etc.).

[0088] The controller 1023 may decode the received data, remove the coding and error detection information added during the transmission process, and verify the integrity of the data, for example, by checking a checksum or using an error correction code to fix possible transmission errors.

[0089] In one embodiment of the present invention, the receiving module further includes a channel control and encoding module, which is used to receive a control signal from a controller and perform switch control on a target channel of the analog-to-digital sampler according to the controller signal.

[0090] In the embodiment of the present invention, Figure 4 , the receiving module 102 may also include a channel control and encoding module 10222, the analog-to-digital sampler 10221 may include multiple data transmission channels, the channel control and encoding module 10222 may receive a control signal from the controller 1023, and perform switch control on the target channel of the analog-to-digital sampler 10221 according to the controller signal, such as 0000, 0100, 0000, which means that the target channel 6 is in the on state, and other channels are in the off state, and only the data of channel 6 is collected at this time. The present invention can enable or disable specific data transmission channels as needed to optimize the data acquisition process, reduce power consumption, or avoid unnecessary signal interference.

[0091] For example, channel 1 is the data transmission channel for the flow sensor, channel 2 is the data transmission channel for the current sensor, and channel 3 is the data transmission channel for the temperature sensor. When there are 10 data transmission channels and the sensor data output by the temperature sensor needs to be detected, the controller can generate a control signal of 0010000000 to the channel control and encoding module. The channel control and encoding module can open channel 3 and close other channels according to the control signal.

[0092] In an embodiment of the present invention, the system further includes a power module, which is connected to the sending module and is used to supply power to the sending module.

[0093] In the embodiment of the present invention, Figure 5 , shows a structural block diagram of another sensor monitoring system provided in an embodiment of the present invention, the system also includes a power supply module 103, the power supply module 103 is connected to the sending module 101, the power supply module 103 is used to power the sending module 101, the power supply of the power supply module can be a 24V standard DC power supply, which powers the sending module 101.

[0094] In one embodiment of the present invention, the control cabinet is also connected to a computer monitoring system. The control cabinet is used to send the analysis results to the computer monitoring system. The computer monitoring system is used to issue a reminder message when the analysis results show that the sensor is working abnormally.

[0095] In the embodiment of the present invention, Figure 5 The monitoring system is also connected to the computer monitoring system 30. The controller 102 in the control cabinet 10 can send the analysis results to the computer monitoring system. The computer monitoring system 30 can issue a reminder message when the analysis results show that the sensor is working abnormally. After receiving the reminder message, the operator or maintenance team can take corresponding measures, such as checking the sensor, adjusting the system parameters, performing maintenance or replacing the faulty parts. The present invention can issue a reminder in time when an abnormality is detected, thereby improving the safety and reliability of the system.

[0096] The timeliness and accuracy of alert information are critical to quickly responding to potential problems, reducing downtime and improving system reliability.

[0097] In one embodiment of the present invention, the computer monitoring system is also used to determine the abnormal level of the sensor operating state when the sensor operating state is abnormal, and issue a reminder message according to the abnormal level of the sensor operating state.

[0098] In an embodiment of the present invention, the level of the warning information can be determined according to the abnormal level of the sensor operation status. Specifically, assuming that there is a temperature sensor on an industrial production line, the abnormal level of the temperature sensor can be divided into low, medium, and high levels. Low-level warning information, medium-level warning information, and high-level warning information can be issued according to the low, medium, and high levels of the temperature sensor respectively. The present invention can intelligently take corresponding measures according to the alarm level to ensure that the fault is handled in time before it becomes serious, thereby improving the safety and reliability of the system.

[0099] The present invention discloses a sensor intelligent upgrading and transformation system, which can collect analog current signals output by sensors through a sending module, convert the analog current signals into digital signals, analyze sensor data analysis results and sensor operation status according to the digital signals, and after converting the digital signals into analog signals, transmit them together with the analog current signals to a control cabinet; the control cabinet is used for demodulating and processing the analog current signals, and obtaining output analysis results; the present invention can collect analog current signals of sensors in real time through a sending module, and quickly convert them into digital signals for processing, thereby realizing real-time analysis and on-site diagnosis of sensor data, as well as sensor operation status monitoring, without the need for additional communication cable laying, thus reducing operation costs and maintenance workload; functions such as sensor status monitoring, sensor data preprocessing, and sensor data semantic transmission can be realized, while the cable architecture of the industrial control system is not changed, and the system has the technical characteristics of low cost, high reliability, and easy installation.

[0100] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0101] like Figure 6 , shows a flow chart of the steps of a sensor intelligent upgrading and transformation method provided by an embodiment of the present invention, the method may include the following steps:

[0102] Step 401: collect the analog current signal output by the sensor and convert the analog current signal into a digital signal.

[0103] Step 402, analyzing the sensor data according to the digital signal to obtain a sensor data analysis result and determine the sensor operating state.

[0104] In one embodiment of the present invention, determining the operating state of the sensor according to the digital signal includes: querying the operating state of the sensor in a preset mapping relationship according to the digital signal, and the preset mapping relationship includes a plurality of mapping relationships between digital signals and operating states.

[0105] In an embodiment of the present invention, a digital signal can be obtained, and then the operating status of the sensor corresponding to the digital signal can be queried according to a pre-stored preset mapping relationship. For example, a digital signal 1 may correspond to normal operation of the sensor, and a digital signal 0 may indicate that the sensor is overheated or faulty.

[0106] Step 403, converting the operating status of the sensor and the sensor data analysis results into analog signals, and sending the operating status of the sensor and the sensor data analysis results in the form of analog current signals and analog signals to the control cabinet, so that the control cabinet analyzes the operating status of the sensor and the sensor data analysis results in the form of analog current signals and analog signals to obtain analysis results, and outputs the analysis results.

[0107] In an embodiment of the present invention, the control cabinet can receive the analog current signal of the sensor, the operating status of the sensor in the form of an analog signal, and the sensor data analysis result, and then parse it to obtain the analysis result, and then output the analysis result. The analysis result may include whether the operating status of the sensor is normal and whether the transported sensor data analysis result is normal. The user performs corresponding processing on the sensor according to the analysis result. The present invention converts the operating status of the sensor into an analog signal and sends it to the control cabinet. The system can provide instant status feedback, help operators or automation systems quickly understand the current status of the sensor, and provide convenience for users.

[0108] The present invention discloses a method for intelligent upgrading and transformation of a sensor. The present invention can collect an analog current signal output by a sensor through a sending module, convert the analog current signal into a digital signal, analyze the sensor data analysis result and the sensor operation status according to the digital signal, and after converting the digital signal into an analog signal, transmit it together with the analog current signal to a control cabinet; the control cabinet is used for demodulating and processing the analog current signal, and obtaining an output analysis result; the present invention can collect the analog current signal of the sensor in real time through the sending module, and quickly convert it into a digital signal for processing, thereby realizing real-time analysis and on-site diagnosis of the sensor data, as well as sensor operation status monitoring, without the need for additional laying of communication cables, reducing operation costs and maintenance workload; it can realize functions such as sensor status monitoring, sensor data preprocessing, and sensor data semantic transmission, and at the same time does not change the cable architecture of the industrial control system, and has technical characteristics such as low cost, high reliability, and easy installation.

[0109] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0110] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0111] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0112] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0113] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0114] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0115] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0116] The above is a detailed introduction to a sensor intelligent upgrading and transformation system and method provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A sensor intelligent upgrading and transformation system, characterized in that: The system comprises a sending module and a control cabinet, one end of the sending module is connected to the sensor, and the other end of the sending module is connected to the control cabinet; The sending module is used to collect the analog current signal output by the sensor, convert the analog current signal into a digital signal, analyze the sensor data according to the digital signal to obtain a sensor data analysis result, and determine the operating state of the sensor, convert the operating state of the sensor and the sensor data analysis result into an analog signal, and send the analog current signal, the operating state of the sensor in the form of an analog signal, and the sensor data analysis result to the control cabinet through the channel corresponding to the sensor; The control cabinet is used to analyze the analog current signal, the operating status of the sensor in the form of the analog signal, and the sensor data analysis result to obtain an analysis result, and output the analysis result.

2. The system according to claim 1, characterized in that The sending module also includes an analog-to-digital converter, an analog signal delay circuit, and a first analog signal isolation distributor, one end of the first analog signal isolation distributor is connected to the sensor, and the other end of the first analog signal isolation distributor is respectively connected to the analog-to-digital converter and the analog signal delay circuit; The first analog signal isolation distributor is used to collect the analog current signal and send the analog current signal to the analog-to-digital converter and the analog signal delay circuit respectively; The analog-to-digital converter is used to perform analog-to-digital conversion on the analog current signal to obtain the digital signal; The analog signal delay circuit is used to obtain a delay time length, and send the analog current signal to the control cabinet according to the delay time length.

3. The system according to claim 2, characterized in that The analog signal delay circuit includes one of a capacitor-inductor delay line, an optical fiber delay line, and an analog phase shifter.

4. The system according to claim 2, characterized in that The sending module also includes a single-chip microcomputer, which is connected to the analog-to-digital converter. The single-chip microcomputer is used to obtain the digital signal sent by the analog-to-digital converter, and query the operating status of the sensor in a preset mapping relationship according to the digital signal. The preset mapping relationship includes a mapping relationship between multiple digital signals and operating status.

5. The system according to claim 4, characterized in that The sending module also includes a digital-to-analog converter, which is connected to the single-chip microcomputer and the control cabinet respectively, and is used to convert the operating status of the sensor and the sensor data analysis results in the form of digital signals sent by the single-chip microcomputer into the operating status of the sensor and the sensor data analysis results in the form of analog signals.

6. The system according to claim 1, characterized in that The control cabinet comprises a receiving module, a second analog signal isolation distributor, and a controller, wherein the second analog signal isolation distributor is connected to the receiving module and the controller respectively, and the receiving module is connected to the controller; The second analog signal isolation distributor is used to receive the analog current signal and the operating state of the sensor in the form of an analog signal and the sensor data analysis result sent by the sending module, send the analog current signal to the controller, and send the operating state of the sensor in the form of an analog signal and the sensor data analysis result to the receiving module; The receiving module is used to convert the operating state of the sensor in the form of analog signals and the sensor data analysis result into the operating state of the sensor in the form of digital signals and the sensor data analysis result, and send the operating state of the sensor in the form of digital signals and the sensor data analysis result to the controller; The controller is used to perform similar feature matching according to the operating status of the sensor in the form of a digital signal, the sensor data analysis result and the analog current signal to obtain a digital signal offset, perform frequency domain calculation according to the digital signal offset to obtain a high-frequency signal value, and analyze the high-frequency signal value to obtain an analysis result.

7. The system according to claim 6, characterized in that The receiving module includes an analog-to-digital sampler, which is used to collect the operating status of the sensor in the form of analog signals and the sensor data analysis results, and convert the operating status of the sensor in the form of analog signals into the operating status of the sensor in the form of digital signals and the sensor data analysis results.

8. The system according to claim 7, characterized in that The analog-to-digital sampler is also used to package the operating status of the sensor in the form of digital signals and the sensor data analysis results according to a preset protocol, and send the packaged data packets to the controller; The controller is used to parse the packaged data packet according to the preset protocol to obtain the operating status of the sensor and the sensor data analysis result in the form of digital signals.

9. The system according to claim 8, characterized in that The analog-to-digital sampler is also used to obtain coding information, encode the packaged data packet according to the coding information to obtain an encoded data packet, and send the encoded data packet to the controller.

10. The system according to claim 9, characterized in that The coding information includes at least one of an error detection and correction code and a binary code.

11. The system according to claim 6, characterized in that The receiving module also includes a channel control and encoding module, which is used to receive a control signal from the controller and perform switch control on a target channel of the analog-to-digital sampler according to the controller signal.

12. The system according to claim 1, characterized in that The system further comprises a power supply module, which is connected to the sending module and is used to supply power to the sending module.

13. The system according to claim 1, characterized in that The control cabinet is also connected to a computer monitoring system. The control cabinet is used to send the analysis result to the computer monitoring system. The computer monitoring system is used to issue a reminder message when the analysis result shows that the operating state of the sensor is abnormal.

14. The system according to claim 10, characterized in that The computer monitoring system is also used to determine the abnormality level of the sensor operation state when the sensor operation state is abnormal, and issue a reminder message according to the abnormality level of the sensor operation state.

15. A method for intelligent upgrading and transformation of a sensor, characterized in that: The method comprises: Collecting the analog current signal output by the sensor, and converting the analog current signal into a digital signal; Analyzing the sensor data according to the digital signal to obtain a sensor data analysis result, and determining the operating state of the sensor; The operating status of the sensor and the sensor data analysis result are converted into analog signals, and the analog current signal, the operating status of the sensor in the form of analog signals, and the sensor data analysis result are sent to the control cabinet, so that the control cabinet analyzes the analog current signal, the operating status of the sensor in the form of analog signals, and the sensor data analysis result to obtain analysis results, and outputs the analysis results.

16. The method according to claim 15, characterized in that Determining the operating state of the sensor according to the digital signal includes: The operating state of the sensor is queried in a preset mapping relationship according to the digital signal, and the preset mapping relationship includes a plurality of mapping relationships between digital signals and operating states.

Images