Data differential encoding and sparse transmission method, device and equipment for gas turbine blade tip clearance sensor

Abstract

This invention relates to a method, apparatus, and equipment for differential encoding and sparse transmission of data from a gas turbine blade tip clearance sensor. The method includes: acquiring blade tip clearance data using a blade tip clearance sensor, converting it to the rotational domain, calculating circumferential and temporal differential data, performing joint quantization and variable-length codeword encoding to obtain differentially encoded data; aggregating the differentially encoded data through a sliding window to construct industrial Ethernet frame data, which is then transmitted to the controller; the controller performing stateless decoding of the industrial Ethernet frame data to obtain the blade tip clearance data; and constructing an out-of-band fast channel to send a low-latency alarm frame to the controller when an alarm condition is detected. This technical solution significantly compresses the blade tip clearance data, reducing bandwidth consumption for data transmission, minimizing the need for excessive controller computational resources, greatly improving data transmission efficiency, and enabling rapid alarm detection of gas turbine anomalies through the construction of an out-of-band fast channel.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, and in particular to a method, apparatus and equipment for differential encoding and sparse transmission of data for gas turbine blade tip clearance sensors. Background Technology

[0002] The blade tip clearance of a gas turbine directly affects efficiency, exhaust temperature margin, and blade / casing safety. Modern heavy-duty gas turbines, under conditions such as start-up, load increases / decreases, and hot steady-state operation, experience complex circumferential and temporal variations in blade tip clearance due to rotor thermal expansion, casing ellipticity changes, vibration, and eccentricity. To achieve Active Clearance Control (ACC) and blade health monitoring, multiple capacitive clearance sensors are typically arranged circumferentially in the turbine stage to collect blade tip clearance data, forming a high-sampling-rate pulse sequence.

[0003] However, in real-world engineering scenarios, the tip clearance data acquired by high-speed, multi-blade, and multi-sensor systems is enormous. Conventional full-data uploads consume significant bandwidth and controller processing resources, resulting in bandwidth waste and latency jitter. Furthermore, transmitting tip clearance data in a time-series manner leads to data redundancy and increased decoding complexity. Transmitting tip clearance data in full or at fixed intervals can cause alarm events to be masked by long-cycle acquisition or aggregation strategies.

[0004] Therefore, there is a need for a data differential encoding and sparse transmission method, apparatus and equipment for gas turbine blade tip clearance sensors. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a method, apparatus, and device for differential encoding and sparse transmission of data for gas turbine blade tip clearance sensors. This addresses the issue that traditional technologies consume significant bandwidth and controller processing resources for blade tip clearance data transmission, leading to difficulties in timely reporting of alarm events.

[0006] This invention provides a data differential encoding and sparse transmission method for gas turbine blade tip clearance sensors, including: Data on the tip clearance between the gas turbine blades and the casing is collected using a tip clearance sensor. The blade tip clearance data is converted to the rotation domain, and circumferential differential data and temporal differential data are calculated to construct structured measurement values; Joint quantization and variable-length codeword encoding are performed on circumferential differential data and temporal differential data to obtain differential coded data; The differentially encoded data is aggregated through a sliding window to construct industrial Ethernet frame data, which is then transmitted to the controller. The controller performs stateless decoding on the industrial Ethernet frame data to obtain the blade tip clearance data; An out-of-band fast channel is constructed to detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions. When an alarm condition is detected, a low-latency alarm frame is sent to the controller.

[0007] In some optional implementations, the step of converting the tip clearance data to the rotation domain, calculating circumferential differential data and temporal differential data, and constructing structured measurement values ​​includes: Based on the blade serial number of the gas turbine Indicates the circumferential position, the number of revolutions of the blade. The number of rotations is represented, a rotation domain signal model is constructed, the tip gap data of the blade collected by the tip gap sensor is obtained, and the circumferential differential data and time domain differential data are calculated.

[0008] in, For gas turbine The first leaf Circumferential difference data of the second rotation For gas turbine The first leaf Tip clearance data for each rotation For gas turbine The first leaf Tip clearance data for each rotation;

[0009] in, For gas turbine The first leaf Time-domain difference data after rotation For gas turbine The first leaf Tip clearance data for each rotation.

[0010] In some optional implementations, the step of: performing joint quantization and variable-length codeword encoding on the circumferential differential data and the temporal differential data to obtain differential coded data; includes: The quantization step size of the circumferential differential data and the temporal differential data is determined according to the operating conditions, and outliers are detected and saturated clipping is performed to obtain preprocessed circumferential differential data and preprocessed temporal differential data.

[0011] In some optional implementations, the step of: performing joint quantization and variable-length codeword encoding on the circumferential differential data and the temporal differential data to obtain differential coded data; includes: Based on steady-state small difference and transient large difference, the preprocessed circumferential difference data and preprocessed temporal difference data are encoded with variable-length codewords to obtain differential encoded data.

[0012] In some alternative implementations, the industrial Ethernet frame data includes a frame header and a data portion; The frame header includes the window start rotation number, reference gap value, number of blades, window length, and quantization parameter information.

[0013] In some optional implementations, the alarm conditions include: the circumferential differential data or time-domain differential data of three consecutive blades of the gas turbine exceeding the hot operating envelope, a sudden drop in blade tip clearance data, and high-frequency abrupt changes suspected to be caused by coating peeling.

[0014] In some alternative implementations, the low-latency alarm frame includes local tip gap data or differentially coded data.

[0015] In some optional implementations, the step of: constructing an out-of-band fast channel to detect whether the tip clearance data, circumferential differential data, and temporal differential data trigger alarm conditions, and sending a low-latency alarm frame to the controller when an alarm condition is detected; specifically including: When an alarm condition is detected, the sliding window aggregation operation is interrupted.

[0016] This invention provides a data differential encoding and sparse transmission device for a gas turbine blade tip clearance sensor, comprising: The data acquisition module is used to acquire the tip clearance data between the gas turbine blades and the casing through the tip clearance sensor; The data processing module is used to convert the blade tip clearance data to the rotation domain, calculate the circumferential difference data and the time domain difference data, and construct structured measurement values. The data encoding module is used to perform joint quantization and variable-length codeword encoding on circumferential differential data and temporal differential data to obtain differential encoded data; The data transmission module is used to aggregate the differentially encoded data through a sliding window, construct industrial Ethernet frame data, and transmit it to the controller; The data receiving module is used by the controller to perform stateless decoding of the industrial Ethernet frame data to obtain the blade tip gap data. The data alarm module is used to construct an out-of-band fast channel to detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions. When an alarm condition is detected, a low-latency alarm frame is sent to the controller.

[0017] This invention provides an electronic device, comprising: A memory and a processor, wherein the memory stores a computer program that can be executed on the processor, and the processor is used to implement the method described in any of the above embodiments when executing the computer program.

[0018] Compared with traditional technologies, the beneficial effects of this invention are as follows: The present invention relates to a method, apparatus, and device for differential encoding and sparse transmission of data for a gas turbine blade tip clearance sensor. This method converts the blade tip clearance data to the rotational domain and performs joint quantization and variable-length codeword encoding, achieving significant data compression to reduce bandwidth consumption during data transmission. By aggregating differentially encoded data through a sliding window to construct industrial Ethernet frame data for transmission, bandwidth waste and latency jitter are effectively reduced. The controller performs stateless decoding of the industrial Ethernet frame data. Due to the low complexity of differential recovery and quantization decoding, minimal computational resources are required, greatly improving data transmission efficiency. Furthermore, by constructing an out-of-band fast channel, rapid alarms for gas turbine anomalies are achieved, preventing alarm events from being masked and enabling timely controller intervention.

[0019] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating the data differential encoding and sparse transmission method for the gas turbine blade tip clearance sensor provided by the present invention. Figure 2 This is a schematic diagram of the data differential encoding and sparse transmission device for the gas turbine blade tip clearance sensor provided by the present invention. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] This invention provides a data differential encoding and sparse transmission method for gas turbine blade tip clearance sensors, referencing... Figure 1 ,include: Data on the tip clearance between the gas turbine blades and the casing is collected using a tip clearance sensor. The tip clearance data is converted to the rotation domain, and circumferential and temporal differential data are calculated to construct structured measurement values. Joint quantization and variable-length codeword encoding are performed on circumferential differential data and temporal differential data to obtain differential coded data; Differentially encoded data is aggregated using a sliding window to construct industrial Ethernet frame data, which is then transmitted to the controller. The controller performs stateless decoding of industrial Ethernet frame data to obtain blade tip clearance data. An out-of-band fast channel is constructed to detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions. When an alarm condition is detected, a low-latency alarm frame is sent to the controller.

[0024] In this embodiment of the invention, tip clearance data between the gas turbine blades and the casing is collected by a tip clearance sensor and converted to the rotational domain to calculate circumferential differential data and temporal differential data. The circumferential differential data and temporal differential data are jointly quantized and encoded with variable-length codewords to obtain differential coded data. The differential coded data is aggregated through a sliding window to construct industrial Ethernet frame data and transmit it to the controller. The controller performs stateless decoding on the received industrial Ethernet frame data to obtain tip clearance data.

[0025] In this embodiment of the invention, by constructing an out-of-band fast channel, a low-latency alarm frame is sent to the controller when the alarm conditions are triggered by detecting blade tip gap data, circumferential differential data and temporal differential data.

[0026] In this embodiment of the invention, the sliding window aggregates N consecutive cycles of differentially coded data and packages them into a single industrial Ethernet frame, reducing message header overhead.

[0027] In this embodiment of the invention, the controller can recover the tip gap data within the window from the received industrial Ethernet frame data based on the intra-frame reference and differential sequence, without relying heavily on historical cache, which facilitates redundant link switching and rapid recovery.

[0028] In this embodiment of the invention, the quantization step size and the window length of the sliding window can be adaptively configured according to the operating conditions, taking into account both steady-state compression and transient capture.

[0029] In this embodiment of the invention, by converting time-domain tip clearance data into structured measurements in the rotational domain, and leveraging the local smoothness of the gas turbine's thermal steady-state and its slow variation across revolutions, circumferential and temporal differential data are acquired. Significant compression of these data is achieved through joint quantization and variable-length codeword encoding. By aggregating the differentially encoded data using a sliding window, industrial Ethernet frames are constructed and transmitted to the controller, significantly reducing data transmission bandwidth usage. The controller performs stateless decoding based on the data within the industrial Ethernet frames to obtain the tip clearance data, facilitating the switching of primary / backup links or devices and reducing recovery time. Furthermore, an out-of-band fast channel is created to address abnormal gas turbine conditions. The method provides rapid alarms, unaffected by window aggregation delays. Compared to traditional techniques, it converts tip clearance data to the rotation domain and performs joint quantization and variable-length codeword encoding, achieving significant data compression to reduce bandwidth consumption. Industrial Ethernet frames are constructed and transmitted via sliding window aggregation of differentially encoded data, effectively reducing bandwidth waste and latency jitter. The controller performs stateless decoding of the industrial Ethernet frames. Due to the low complexity of differential recovery and quantization decoding, minimal computational resources are required, greatly improving data transmission efficiency. Furthermore, by constructing an out-of-band fast channel, rapid alarms for gas turbine anomalies are achieved, preventing alarm events from being masked and allowing the controller to take timely action.

[0030] In this embodiment of the invention, the uplink bandwidth of the industrial Ethernet frame data transmitted by the 96-bladed gas turbine at 3600 rpm can be compressed to less than 8% of the original pulse stream, reducing the risk of network congestion.

[0031] In this embodiment of the invention, the steps include: converting the tip clearance data to the rotation domain, calculating circumferential difference data and temporal difference data, and constructing structured measurement values; including: Based on the blade serial number of the gas turbine Indicates the circumferential position, the number of revolutions of the blade. The number of rotations is represented, a rotation domain signal model is constructed, the tip gap data of the blade collected by the tip gap sensor is obtained, and the circumferential differential data and time domain differential data are calculated.

[0032] in, For gas turbine The first leaf Circumferential difference data of the second rotation For gas turbine The first leaf Tip clearance data for each rotation For gas turbine The first leaf Tip clearance data for each rotation;

[0033] in, For gas turbine The first leaf Time-domain difference data after rotation For gas turbine The first leaf Tip clearance data for each rotation.

[0034] In this embodiment of the invention, a rotational domain signal model is constructed using the blade number / circumferential position, and circumferential differential data and temporal differential data are calculated based on the blade tip gap data to obtain structured measurement values.

[0035] In this embodiment of the invention, circumferential differential data is obtained by calculating the differential data of the gap between adjacent blades within the same revolution, and temporal differential data is obtained by calculating the differential data of the gap between the same blade in adjacent revolutions.

[0036] In this embodiment of the invention, the steps include: performing joint quantization and variable-length codeword encoding on circumferential differential data and temporal differential data to obtain differential coded data; including: The quantization step size of the circumferential differential data and the temporal differential data is determined according to the working conditions, and outliers are detected and saturated clipping is performed to obtain preprocessed circumferential differential data and preprocessed temporal differential data.

[0037] In this embodiment of the invention, the operating conditions are configured in segments according to the gas turbine speed, exhaust temperature, and load.

[0038] In this embodiment of the invention, outliers in the circumferential differential data and the temporal differential data are saturated and pruned to prevent outliers from causing code length out of control.

[0039] In this embodiment of the invention, the steps include: performing joint quantization and variable-length codeword encoding on circumferential differential data and temporal differential data to obtain differential coded data; including: Variable-length codewords are used to encode preprocessed circumferential differential data and preprocessed temporal differential data based on steady-state small-difference and transient large-difference methods to obtain differential encoded data.

[0040] In this embodiment of the invention, under stable operating conditions, the circumferential differential data and the time-domain differential data are mostly distributed with small amplitude. Based on the steady-state small difference, the preprocessed circumferential differential data and the preprocessed time-domain differential data are encoded to obtain a short code of 2-4 bits.

[0041] In this embodiment of the invention, the processing of steady-state small-difference preprocessed circumferential difference data and preprocessed time-domain difference data can be mapped according to amplitude intervals.

[0042] In this embodiment of the invention, under transient or fault conditions, the transient large difference is used to encode the preprocessed circumferential difference data and the preprocessed time-domain difference data to obtain the encoding of "12 bit original value + abnormal flag bit".

[0043] In this embodiment of the invention, continuous zero-difference data or small-difference data are further compressed using run-length encoding.

[0044] In this embodiment of the invention, industrial Ethernet frame data includes a frame header and a data portion; Frame header, including window start / turn number Reference clearance value, number of blades Window length And quantization parameter information. The reference gap value can be implemented as That is, the reference blade of a gas turbine Starting rotation The data on the tip gap.

[0045] In this embodiment of the invention, the steps are: constructing an out-of-band fast channel to detect whether tip clearance data, circumferential differential data, and temporal differential data trigger alarm conditions; and when an alarm condition is detected, sending a low-latency alarm frame to the controller; specifically including: When an alarm condition is detected, the sliding window aggregation operation is interrupted.

[0046] In this embodiment of the invention, alarm conditions include: the circumferential differential data or time-domain differential data of three consecutive blades of the gas turbine exceeding the hot operating envelope, a sudden drop in blade tip clearance data, and high-frequency abrupt changes suspected to be caused by coating peeling.

[0047] In this embodiment of the invention, the hot operating envelope can be adaptively configured according to the operating conditions.

[0048] In this embodiment of the invention, the low-latency alarm frame includes local leaf tip gap data or differentially coded data.

[0049] In this embodiment of the invention, by detecting whether the blade tip gap data, circumferential differential data and temporal differential data trigger alarm conditions, a low-latency alarm frame is immediately sent and the current sliding window aggregation is interrupted so that the controller can make a quick determination. The above technical solution realizes millisecond-level alarms for abnormal situations such as blade cracks, coating peeling and collision risks through out-of-band fast channels, which is not affected by window aggregation delay.

[0050] In this embodiment of the invention, the above method constructs a communication encoding and transmission method that is oriented towards the measurement characteristics of gas turbine blade tip clearance, while taking into account high compression ratio, low latency alarm, and deterministic decoding.

[0051] The data differential encoding and sparse transmission device for the gas turbine blade tip clearance sensor provided in this embodiment of the invention is referenced. Figure 2 ,include: The data acquisition module is used to acquire the tip clearance data between the gas turbine blades and the casing through the tip clearance sensor; The data processing module is used to convert the blade tip clearance data to the rotation domain, calculate the circumferential difference data and the time domain difference data, and construct structured measurement values. The data encoding module is used to perform joint quantization and variable-length codeword encoding on circumferential differential data and temporal differential data to obtain differential encoded data; The data transmission module is used to aggregate differentially encoded data through a sliding window, construct industrial Ethernet frame data, and transmit it to the controller. The data receiving module is used by the controller to perform stateless decoding of industrial Ethernet frame data to obtain blade tip clearance data. The data alarm module is used to construct an out-of-band fast channel to detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions. When an alarm condition is detected, a low-latency alarm frame is sent to the controller.

[0052] In this embodiment of the invention, the data acquisition module acquires the tip clearance data between the gas turbine blade and the casing through the tip clearance sensor, and converts it into circumferential differential data and temporal differential data in the rotational domain through the data processing module. The data encoding module performs joint quantization and variable-length codeword encoding on the circumferential differential data and temporal differential data to obtain differential encoded data. The data transmission module aggregates the differential encoded data through a sliding window, constructs industrial Ethernet frame data, and transmits it to the controller. The data receiving module performs stateless decoding on the industrial Ethernet frame data received by the controller to obtain the tip clearance data.

[0053] In this embodiment of the invention, the data alarm module constructs an out-of-band fast channel to send a low-latency alarm frame to the controller when the alarm conditions are triggered by detecting blade tip gap data, circumferential differential data, and temporal differential data.

[0054] In this embodiment of the invention, by converting time-domain tip clearance data into structured measurements in the rotational domain, and leveraging the local smoothness of the gas turbine's thermal steady-state and its slow variation across revolutions, circumferential and temporal differential data are acquired. Significant compression of these data is achieved through joint quantization and variable-length codeword encoding. By aggregating the differentially encoded data using a sliding window, industrial Ethernet frames are constructed and transmitted to the controller, significantly reducing data transmission bandwidth usage. The controller performs stateless decoding based on the data within the industrial Ethernet frames to obtain the tip clearance data, facilitating the switching of primary / backup links or devices and reducing recovery time. Furthermore, an out-of-band fast channel is created to address abnormal gas turbine conditions. The method provides rapid alarms, unaffected by window aggregation delays. Compared to traditional techniques, it converts tip clearance data to the rotation domain and performs joint quantization and variable-length codeword encoding, achieving significant data compression to reduce bandwidth consumption. Industrial Ethernet frames are constructed and transmitted via sliding window aggregation of differentially encoded data, effectively reducing bandwidth waste and latency jitter. The controller performs stateless decoding of the industrial Ethernet frames. Due to the low complexity of differential recovery and quantization decoding, minimal computational resources are required, greatly improving data transmission efficiency. Furthermore, by constructing an out-of-band fast channel, rapid alarms for gas turbine anomalies are achieved, preventing alarm events from being masked and allowing the controller to take timely action.

[0055] An electronic device provided in this embodiment of the invention includes: A memory and a processor, wherein a computer program is stored in the memory and can be executed on the processor, and the processor is used to implement the method of any of the above embodiments when executing the computer program.

[0056] In this embodiment of the invention, the computer program stored in the memory of the electronic device is executed by the processor to implement any of the above embodiments, realize the rotation domain conversion and encoding transmission of the blade tip clearance data, and send a low-latency alarm frame to the controller when an alarm event occurs.

[0057] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for differential encoding and sparse transmission of data for a gas turbine blade tip clearance sensor, characterized in that, include: Data on the tip clearance between the gas turbine blades and the casing is collected using a tip clearance sensor. The blade tip clearance data is converted to the rotation domain, and circumferential differential data and temporal differential data are calculated to construct structured measurement values; Joint quantization and variable-length codeword encoding are performed on circumferential differential data and temporal differential data to obtain differential coded data; The differentially encoded data is aggregated through a sliding window to construct industrial Ethernet frame data, which is then transmitted to the controller. The controller performs stateless decoding on the industrial Ethernet frame data to obtain the blade tip clearance data; An out-of-band fast channel is constructed to detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions. When an alarm condition is detected, a low-latency alarm frame is sent to the controller.

2. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 1, characterized in that, The steps include: converting the tip clearance data to the rotation domain, calculating circumferential difference data and temporal difference data, and constructing structured measurement values; including: Based on the blade serial number of the gas turbine Indicates the circumferential position, the number of revolutions of the blade. The number of rotations is represented, a rotation domain signal model is constructed, the tip gap data of the blade collected by the tip gap sensor is obtained, and the circumferential differential data and time domain differential data are calculated. in, For gas turbine The first leaf Circumferential difference data of the second rotation For gas turbine The first leaf Tip clearance data for each rotation For gas turbine The first leaf Tip clearance data for each rotation; in, For gas turbine The first leaf Time-domain difference data after rotation For gas turbine The first leaf Tip clearance data for each rotation.

3. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 1, characterized in that, The steps include: performing joint quantization and variable-length codeword encoding on the circumferential differential data and the temporal differential data to obtain differential coded data; including: The quantization step size of the circumferential differential data and the temporal differential data is determined according to the operating conditions, and outliers are detected and saturated clipping is performed to obtain preprocessed circumferential differential data and preprocessed temporal differential data.

4. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 3, characterized in that, The steps include: performing joint quantization and variable-length codeword encoding on the circumferential differential data and the temporal differential data to obtain differential coded data; including: Based on steady-state small difference and transient large difference, the preprocessed circumferential difference data and preprocessed temporal difference data are encoded with variable-length codewords to obtain differential encoded data.

5. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 1, characterized in that, The industrial Ethernet frame data includes a frame header and a data portion; The frame header includes the window start rotation number, reference gap value, number of blades, window length, and quantization parameter information.

6. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 1, characterized in that, The alarm conditions include: the circumferential differential data or time-domain differential data of three consecutive blades of the gas turbine exceeding the hot operating envelope, a sudden drop in blade tip clearance data, and high-frequency abrupt changes suspected to be caused by coating peeling.

7. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 1, characterized in that, Low-latency alarm frames include local leaf tip gap data or differentially coded data.

8. The data differential encoding and sparse transmission method for a gas turbine blade tip clearance sensor according to claim 1, characterized in that, The steps are as follows: construct an out-of-band fast channel, detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions, and send a low-latency alarm frame to the controller when an alarm condition is detected. Specifically, it includes: When an alarm condition is detected, the sliding window aggregation operation is interrupted.

9. A data differential encoding and sparse transmission device for a gas turbine blade tip clearance sensor, characterized in that, include: The data acquisition module is used to acquire the tip clearance data between the gas turbine blades and the casing through the tip clearance sensor; The data processing module is used to convert the blade tip clearance data to the rotation domain, calculate the circumferential difference data and the time domain difference data, and construct structured measurement values. The data encoding module is used to perform joint quantization and variable-length codeword encoding on circumferential differential data and temporal differential data to obtain differential encoded data; The data transmission module is used to aggregate the differentially encoded data through a sliding window, construct industrial Ethernet frame data, and transmit it to the controller; The data receiving module is used by the controller to perform stateless decoding of the industrial Ethernet frame data to obtain the blade tip gap data. The data alarm module is used to construct an out-of-band fast channel to detect whether the tip gap data, circumferential differential data and temporal differential data trigger alarm conditions. When an alarm condition is detected, a low-latency alarm frame is sent to the controller.

10. An electronic device, characterized in that, include: A memory and a processor, wherein the memory stores a computer program that can be executed on the processor, and the processor is configured to implement the method as described in any one of claims 1 to 8 when executing the computer program.

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