Methods, systems, and equipment for identifying ranging anomalies based on ultrasonic graphic features

Abstract

This invention discloses a method, system, and device for judging ranging anomalies based on ultrasonic graphic features. The ingenious solution involves collecting waveform data of the transmitted ultrasonic wave and the feedback signal when the ultrasonic ranging device starts working, generating transmitted and feedback waveform data respectively, and fitting these to form a waveform data graph and corresponding feature waveform localization. Then, the localized feature waveform is matched with four common operational anomalies (ultrasonic wave in a dead zone, no transducer connected, no reflector, and submerged in liquid), and the corresponding judgment result is output based on the actual waveform matching. This allows the terminal device to provide timely and efficient feedback on the ultrasonic ranging operation, offering highly relevant alarm signals and analytical references for the backend service platform and operators.

Description

Technical Field

[0001] This invention relates to the fields of ultrasonic ranging equipment monitoring technology and fault location technology, and in particular to methods, systems and equipment for judging ranging anomalies based on ultrasonic graphic features. Background Technology

[0002] Existing ultrasonic ranging systems require that ultrasonic probes be installed away from ultrasonic blind zones; otherwise, ranging in blind zones will result in inability to measure distance correctly or abnormal ranging results. Currently, the main causes of ultrasonic ranging anomalies are four types: blind zones, no transducer connected, no reflective surface detected, and transducer being submerged. However, there are currently no reported solutions for these anomalies. When these anomalies occur, technicians often need to conduct multiple investigations, leading to low efficiency and difficulty in locating the anomaly. Therefore, if patterns in ranging anomalies can be identified and utilized in conjunction with terminal equipment to obtain relevant results in a timely manner, it will significantly improve the on-site anomaly confirmation and remote management of ultrasonic ranging devices. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a method, system, and device for judging ranging anomalies based on ultrasonic graphic features that is reliable in implementation, provides good reference results, and is highly efficient.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this invention is as follows:

[0005] A method for judging ranging anomalies based on ultrasonic graphic features, used for judging ranging anomalies in ultrasonic ranging devices, includes:

[0006] S01. Collect waveform data of ultrasonic wave transmission and waveform data of feedback signal according to preset conditions, and generate transmitted waveform data and feedback waveform data respectively;

[0007] S02. Acquire the transmitted waveform data and the feedback waveform data, parse them according to preset conditions, and generate the parsing results;

[0008] S03. Obtain the parsing results, judge them according to preset requirements, and output the judgment results;

[0009] S04. Obtain the judgment result. When it points to an abnormality, output the ranging abnormality information.

[0010] As one possible implementation, further, in this solution S01, in response to the start signal of the ultrasonic ranging device, waveform data of the ultrasonic wave transmission and waveform data of the feedback signal are acquired at a preset acquisition frequency, and transmitted waveform data and feedback waveform data are generated respectively.

[0011] As a preferred implementation option, in this scheme S02, after acquiring the transmitted waveform data and the feedback waveform data, the transmitted waveform data and the feedback waveform data are fitted into the same waveform data graph in chronological order to achieve analysis and generate analysis results.

[0012] As a preferred implementation option, the analysis results of this scheme preferably include the time intervals corresponding to the transmitted waveform data and the feedback waveform data in the waveform data diagram, as well as the echo waveform associated with the transmitted waveform data and the feedback waveform data.

[0013] As a preferred implementation option, this solution S03 preferably includes:

[0014] To obtain the analysis results, when the waveform data graph contains both transmitted and echo waveforms, the transmitted waveform and the first echo waveform are judged. When the voltage corresponding to the valley point between the transmitted waveform and the first echo waveform is higher than the preset reference voltage, a blind zone in ranging is generated as the judgment result.

[0015] As a preferred implementation option, the ultrasonic ranging device of this solution preferably includes an MCU control unit and an ultrasonic driving circuit and a transducer connected to the MCU control unit. The ultrasonic driving circuit and the transducer are used to output transmitted waveform data and / or receive feedback waveform data.

[0016] As a preferred implementation option, solution S03 preferably includes:

[0017] To obtain the analysis results, when the waveform data graph contains a transmitted waveform but no corresponding echo waveform, the time span of the transmitted waveform in the waveform data graph is determined.

[0018] If the pulse width of the transmitted waveform over the time span is lower than the pulse width corresponding to the preset transmitted waveform of the transducer, an unconnected transducer is generated as the judgment result.

[0019] When the pulse width of the transmitted waveform over the time span meets the matching requirement with the pulse width corresponding to the preset transmitted waveform of the transducer, a result indicating that no reflecting surface was detected in the ranging is generated.

[0020] As a preferred implementation option, this solution S03 preferably also includes:

[0021] To obtain the parsing results, when the waveform data graph contains a transmitted waveform, determine the time span of the transmitted waveform within the waveform data graph.

[0022] When the pulse width of the transmitted waveform over the time span is higher than the preset transmitted waveform of the transducer and exceeds the preset amplitude, a transducer flooding indicator indicating a transducer malfunction is generated as the judgment result.

[0023] Based on the above, the present invention also provides a system for judging ranging anomalies based on ultrasonic graphic features, comprising:

[0024] The terminal device includes an MCU control unit, a communication module, an ultrasonic drive circuit, a transducer, an ADC circuit, and an ultrasonic image feature algorithm analysis unit. The MCU control unit is connected to the ultrasonic drive circuit, and the transducer is connected to both the ultrasonic drive circuit and the ADC circuit, used to transmit waveform data and receive waveform data from feedback signals. The ultrasonic image feature algorithm analysis unit is used to analyze the transmitted and feedback waveform data according to preset conditions and generate analysis results. The MCU control unit controls the ultrasonic drive circuit to start and stop, acquires the analysis results, judges them according to preset requirements, and outputs the judgment results. Finally, interactive information is generated and output based on the judgment results. Additionally, the ADC circuit is an ultrasonic waveform ADC acquisition and envelope detection circuit.

[0025] The backend platform server communicates with the terminal device and is used to receive interactive information output by the MCU control unit.

[0026] Based on the above, the present invention also provides a device for judging ranging anomalies based on ultrasonic graphic features, which includes the system for judging ranging anomalies based on ultrasonic graphic features described above.

[0027] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: The ingenuity of this solution lies in acquiring waveform data of the ultrasonic wave transmission and feedback signal when the ultrasonic ranging device starts working, generating transmitted waveform data and feedback waveform data respectively, and fitting these to form a waveform data diagram and correspondingly locating characteristic waveforms. Then, the located characteristic waveforms are matched with four common operational anomalies (ultrasonic waves in a blind zone, no transducer connected, no reflector, and submerged in liquid), and the corresponding judgment result is output based on the actual waveform matching situation. This allows the terminal equipment to provide timely and efficient feedback on the ultrasonic ranging operation, providing the backend service platform and operators with highly reliable alarm signals and analytical references. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a simplified flowchart illustrating the implementation steps of the method of the present invention;

[0030] Figure 2 This is a simplified implementation flowchart of the method of the present invention at the beginning of the ranging operation;

[0031] Figure 3 This is an example of waveform data diagrams illustrating the method of the present invention when a blind zone is identified.

[0032] Figure 4 This is an example of waveform data diagrams illustrating the method of the present invention when it is determined that the transducer is not connected;

[0033] Figure 5 This is an example of waveform data diagrams illustrating the method of the present invention when it is determined that no reflective surface has been detected;

[0034] Figure 6 This is an example of waveform data diagrams illustrating the method of the present invention when the transducer is determined to be flooded;

[0035] Figure 7 This is an example of waveform data diagram of the method of the present invention in normal waveform mode;

[0036] Figure 8 This is a schematic diagram of the terminal device unit module connection of the system of the present invention;

[0037] Figure 9 This is a simplified schematic diagram illustrating the data interaction between the terminal device of the system and the backend platform server of the present invention. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the invention. Similarly, the following embodiments are only some, not all, embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figure 1 As shown, this embodiment provides a method for judging ranging anomalies based on ultrasonic graphic features, used for judging ranging anomalies in ultrasonic ranging devices, which includes:

[0040] S01. Collect waveform data of ultrasonic wave transmission and waveform data of feedback signal according to preset conditions, and generate transmitted waveform data and feedback waveform data respectively;

[0041] S02. Acquire the transmitted waveform data and the feedback waveform data, parse them according to preset conditions, and generate the parsing results;

[0042] S03. Obtain the parsing results, judge them according to preset requirements, and output the judgment results;

[0043] S04. Obtain the judgment result. When it points to an abnormality, output the ranging abnormality information.

[0044] Combination Figure 2 As shown, specifically, in order to respond promptly to the working status of the ranging device, in this scheme S01, the ultrasonic ranging device can be activated by responding to its start signal. Then, the waveform data of the ultrasonic wave transmission and the waveform data of the feedback signal are collected at a preset acquisition frequency to generate transmitted waveform data and feedback waveform data respectively. The preset acquisition frequency can be adaptively adjusted according to the working frequency of the ultrasonic wave transmission waveform data, so that the waveform data of the ultrasonic wave transmission and the waveform data of the feedback signal can be collected in a timely, accurate and relatively complete manner, avoiding data loss that would affect the judgment and processing of subsequent steps.

[0045] In this scheme S02, after acquiring the transmitted waveform data and the feedback waveform data, the transmitted waveform data and the feedback waveform data are fitted into the same waveform data graph in chronological order to achieve analysis and generate analysis results. In addition, preferably, the analysis results of this scheme include the time intervals corresponding to the transmitted waveform data and the feedback waveform data in the waveform data graph, as well as the echo waveform associated with the transmitted waveform data and the feedback waveform data.

[0046] This solution S03 includes:

[0047] Combination Figure 3 As shown, the analysis results are obtained. When the waveform data graph contains both transmitted and echo waveforms, the transmitted waveform and the first echo waveform are judged. When the voltage corresponding to the valley point between the transmitted waveform and the first echo waveform is higher than the preset reference voltage, a blind zone in ranging is generated as the judgment result.

[0048] In the dead zone, the waveform characteristics of the dead zone are that the transmitted waveform and the first echo waveform are stuck together, and the drop point of the transmitted waveform is much higher than the 0-volt reference voltage.

[0049] As a preferred implementation option, the ultrasonic ranging device of this solution preferably includes an MCU control unit and an ultrasonic driving circuit and a transducer connected to the MCU control unit. The ultrasonic driving circuit and the transducer are used to output transmitted waveform data and / or receive feedback waveform data.

[0050] In determining specific anomalies, preferably, solution S03 of this scheme includes:

[0051] To obtain the analysis results, when the waveform data graph contains a transmitted waveform but no corresponding echo waveform, the time span of the transmitted waveform in the waveform data graph is determined.

[0052] Combination Figure 4 As shown, when the pulse width of the transmitted waveform over the time span is lower than the pulse width corresponding to the preset transmitted waveform of the transducer, an unconnected transducer is generated as the judgment result.

[0053] Combination Figure 5 As shown, when the pulse width of the transmitted waveform over the time span meets the matching requirement with the pulse width corresponding to the preset transmitted waveform of the transducer, the result of "no reflecting surface detected in ranging" is generated.

[0054] When no transducer is connected, the graphical characteristic of the unconnected transducer is that the width of the transmitted waveform is lower than that of the transmitted waveform when the transducer is connected, and no echo can be detected (the principle behind this characteristic is that there is a decay process from the transducer's vibration to its cessation, which will make the width of the transmitted waveform wider).

[0055] When no reflective surface is detected in the ranging, the graphic characteristics of the undetected reflective surface are similar to those of the unconnected transducer. The difference is that the width of the transmitted pulse is normal and significantly larger than the width of the transmitted waveform when no transducer is connected.

[0056] In addition, this solution S03 also includes:

[0057] Combination Figure 6 As shown, the parsing results are obtained. When the waveform data graph contains a transmitted waveform, the time span of the transmitted waveform in the waveform data graph is determined.

[0058] When the pulse width of the transmitted waveform over the time span is higher than the preset transmitted waveform of the transducer and exceeds the preset amplitude, a transducer flooding (e.g., liquid flooding) indicating a transducer malfunction is generated as a judgment result.

[0059] In the case of transducer flooding, the graphical characteristic of transducer flooding is that the transmitted waveform width is particularly large, much larger than the waveform width when no transducer is connected and no reflective surface is detected.

[0060] Combination Figure 7As shown, it illustrates the ranging waveform under ideal conditions of this scheme, in which the ranging state is normal.

[0061] Combination Figure 8 , Figure 9 As shown, based on the above, this embodiment also provides a system for judging ranging anomalies based on ultrasonic graphic features, which includes:

[0062] The terminal device includes an MCU control unit, a communication module, an ultrasonic drive circuit, a transducer, an ADC circuit, and an ultrasonic image feature algorithm analysis unit. The MCU control unit is connected to the ultrasonic drive circuit, and the transducer is connected to both the ultrasonic drive circuit and the ADC circuit, used to transmit waveform data and receive waveform data from feedback signals. The ultrasonic image feature algorithm analysis unit is used to analyze the transmitted and feedback waveform data according to preset conditions and generate analysis results. The MCU control unit controls the ultrasonic drive circuit to start and stop, acquires the analysis results, judges them according to preset requirements, and outputs the judgment results. Finally, interactive information is generated and output based on the judgment results. Additionally, the ADC circuit is an ultrasonic waveform ADC acquisition and envelope detection circuit.

[0063] The backend platform server communicates with the terminal device and is used to receive interactive information output by the MCU control unit.

[0064] In this solution, the MCU control unit drives the transducer (transceiver integrated ultrasonic transducer) to send waveforms through the ultrasonic drive circuit. At the same time, the echo received by the transducer is acquired by the ultrasonic waveform ADC acquisition and envelope detection circuit. After being transmitted to the ultrasonic image feature algorithm analysis unit for analysis, the detected abnormal state is transmitted to the back-end server for early warning and analysis through the communication module (e.g., 4G module).

[0065] In this scheme, the ultrasonic image feature algorithm analysis unit is used to fit the acquired waveform signal and locate the waveform features. Then, it compares the pre-made waveform features to obtain relevant comparison results to assist in judgment and generate detection results.

[0066] Based on the above, this implementation scheme can also be applied to devices that judge ranging anomalies based on ultrasonic graphic features.

[0067] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0068] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0069] The above description is only a part of the embodiments of the present invention and does not limit the scope of protection of the present invention. Any equivalent device or equivalent process transformation made based on the content of the present invention specification and drawings, or direct or indirect application in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for judging ranging anomalies based on ultrasonic graphic features, used for judging ranging anomalies in an ultrasonic ranging device, wherein the ultrasonic ranging device has an MCU control unit and an ultrasonic driving circuit and a transducer connected to the MCU control unit, the ultrasonic driving circuit and the transducer being used to output transmitted waveform data and / or receive feedback waveform data, characterized in that, It includes: S01. Collect waveform data of ultrasonic wave transmission and waveform data of feedback signal according to preset conditions, and generate transmitted waveform data and feedback waveform data respectively; S02. Acquire the transmitted waveform data and the feedback waveform data, and fit the transmitted waveform data and the feedback waveform data into the same waveform data graph in chronological order to achieve analysis and generate analysis results; the analysis results include the time intervals corresponding to the transmitted waveform data and the feedback waveform data in the waveform data graph, as well as the echo waveforms associated with the transmitted waveform data and the feedback waveform data. S03. Obtain the parsing results, judge them according to preset requirements, and output the judgment results; S04. Obtain the judgment result. When it points to an abnormality, output the ranging abnormality information. S03 includes: Obtain the parsing results. When the waveform data graph contains a transmitted waveform, the time span of the transmitted waveform in the waveform data graph is judged. When the pulse width of the transmitted waveform in the time span is higher than the preset transmitted waveform of the transducer and exceeds the preset amplitude, a transducer flooding indicating transducer malfunction is generated as the judgment result. When the waveform data graph contains both transmitted and echo waveforms, the transmitted waveform and the first echo waveform are judged. When the voltage corresponding to the valley point between the transmitted waveform and the first echo waveform is higher than the preset reference voltage, a blind zone in ranging is generated as the judgment result. When the waveform data graph contains a transmitted waveform but no corresponding echo waveform, the time span of the transmitted waveform in the waveform data graph is determined. If the pulse width of the transmitted waveform over the time span is lower than the pulse width corresponding to the preset transmitted waveform of the transducer, then an unconnected transducer is generated as the judgment result. When the pulse width of the transmitted waveform over the time span meets the matching requirement with the pulse width corresponding to the preset transmitted waveform of the transducer, a result indicating that no reflecting surface was detected in the ranging is generated.

2. The method for judging ranging anomalies based on ultrasonic graphic features as described in claim 1, characterized in that, In S01, in response to the start signal of the ultrasonic ranging device, waveform data of the ultrasonic wave transmission and waveform data of the feedback signal are acquired at a preset acquisition frequency, and the transmitted waveform data and feedback waveform data are generated respectively.

3. A system for judging ranging anomalies based on ultrasonic graphic features, wherein the method described in claim 1 or 2 is used, characterized in that, It includes: The terminal device includes an MCU control unit, a communication module, an ultrasonic drive circuit, a transducer, an ADC circuit, and an ultrasonic image feature algorithm analysis unit. The MCU control unit is connected to the ultrasonic drive circuit, and the transducer is connected to both the ultrasonic drive circuit and the ADC circuit, used to transmit waveform data and receive waveform data from feedback signals. The ultrasonic image feature algorithm analysis unit is used to analyze the transmitted and feedback waveform data according to preset conditions and generate analysis results. The MCU control unit controls the ultrasonic drive circuit to start and stop, acquires the analysis results, judges them according to preset requirements, and outputs the judgment results. Finally, interactive information is generated and output based on the judgment results. Additionally, the ADC circuit is an ultrasonic waveform ADC acquisition and envelope detection circuit. The backend platform server communicates with the terminal device and is used to receive interactive information output by the MCU control unit.

4. A device for judging ranging anomalies based on ultrasonic graphic features, characterized in that, It includes the system for judging ranging anomalies based on ultrasonic graphic features as described in claim 3.

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