阅读说明：本技术 一种可检测反射片异常状态的超声波流量计及检测方法 (Ultrasonic flowmeter capable of detecting abnormal state of reflector plate and detection method ) 是由 严军荣 卢玉龙 宋财华 王晟 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种可检测反射片异常状态的超声波流量计及检测方法,其方法包括：根据超声波反射片的角度变化值和/或超声波反射片的表面粗糙度和/或超声波反射片的位移数据和/或晃动数据计算超声波反射片的异常指数；根据超声波换能器的声波接收范围和计量精度计算超声波反射片的异常容许度；当超声波反射片的异常指数大于异常容许度时,则判定超声波反射片的状态异常。本发明解决了超声波流量计如何全面有效地检测超声波反射片的异常状态的问题。(The invention discloses an ultrasonic flowmeter capable of detecting abnormal states of a reflector plate and a detection method, wherein the method comprises the following steps: calculating an abnormal index of the ultrasonic reflector according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data and/or the shaking data of the ultrasonic reflector; calculating the abnormal tolerance of the ultrasonic reflector plate according to the sound wave receiving range and the metering precision of the ultrasonic transducer; and when the abnormal index of the ultrasonic reflection sheet is greater than the abnormal tolerance, judging that the state of the ultrasonic reflection sheet is abnormal. The invention solves the problem of how to comprehensively and effectively detect the abnormal state of the ultrasonic reflector.)

1. A method for detecting an abnormal state of a reflector plate is characterized by comprising the following steps:

and judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the shaking data of the ultrasonic reflector.

2. The method for detecting an abnormal state of a reflector according to claim 1, wherein the angle variation value of the ultrasonic reflector is any one or more combination of an angle variation value within a preset time period of a single reflector and a difference between angle variation values within preset time periods of two ultrasonic emission plates.

3. The method of claim 1, wherein the surface roughness of the ultrasonic wave reflecting sheet is obtained from a difference between a transmitting intensity and a receiving intensity of the detection sound wave and/or from a surface flatness of the ultrasonic wave reflecting sheet detected by a laser detector and/or from a thickness variation value of the ultrasonic wave reflecting sheet over a certain time.

4. The method of claim 1, wherein the displacement data of the ultrasonic reflector is any one or more of a horizontal position change value within a preset time period of the ultrasonic reflector holder, a vertical position change value within a preset time period of the ultrasonic reflector holder, and a relative position change value within a preset time period of the ultrasonic reflector holder and the ultrasonic reflector.

5. The method according to claim 1, wherein the oscillation data of the ultrasonic reflector is calculated from a change in position data of the ultrasonic reflector holder at a plurality of consecutive sampling times and/or a change in relative position data of the ultrasonic reflector and the ultrasonic reflector holder at a plurality of consecutive sampling times.

6. The method for detecting the abnormal state of the ultrasonic reflector according to claim 1, wherein the step of judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the oscillation data of the ultrasonic reflector comprises the steps of:

calculating an abnormal index of the ultrasonic reflector according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the shaking data of the ultrasonic reflector;

calculating the abnormal tolerance of the ultrasonic reflector plate according to the sound wave receiving range and the metering precision of the ultrasonic transducer;

and when the abnormal index of the ultrasonic reflection sheet is greater than the abnormal tolerance, judging that the state of the ultrasonic reflection sheet is abnormal.

7. The method for detecting the abnormal state of the ultrasonic reflector according to claim 6, wherein the calculating of the abnormal index of the ultrasonic reflector according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the oscillation data of the ultrasonic reflector is performed by: calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on a relation between a surface roughness of the ultrasonic reflector and an ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector based on an influence of a displacement of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of a wobble of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change of the ultrasonic reflector on ultrasonic reception and a relation between a surface roughness of the ultrasonic reflector and an ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change and a displacement of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change and a wobble of the ultrasonic reflection, Calculating an abnormal index of the ultrasonic reflector according to the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation and the influence of the displacement of the ultrasonic reflector on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation and the influence of the shaking of the ultrasonic reflector on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the influence of the displacement of the ultrasonic reflector and the shaking on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change and the displacement of the ultrasonic reflector on the ultrasonic reception and the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change and the shaking on the ultrasonic reception and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector, calculating a change index of the ultrasonic reflector, The method includes calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change, the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving, calculating an abnormal index of the ultrasonic reflector according to the influence of the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, and calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change, the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation.

8. A computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-7.

9. An ultrasonic flow meter capable of detecting an abnormal state of a reflector plate, comprising:

an ultrasonic flow meter;

a sensor; the sensor is used for detecting an angle change value of the ultrasonic reflector plate and/or surface roughness of the ultrasonic reflector plate and/or displacement data of the ultrasonic reflector plate and/or shaking data of the ultrasonic reflector plate;

a processor;

a memory;

and

one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the method of any of claims 1-7.

10. The ultrasonic flowmeter capable of detecting an abnormal state of a reflector according to claim 9, wherein the sensor comprises any one or more of a device for detecting transmission and reception of sound waves disposed directly above the ultrasonic reflector, a displacement sensor disposed on the ultrasonic reflector holder, a laser probe disposed on a side of the ultrasonic reflector, and a vibration sensor disposed on the ultrasonic reflector holder.

Technical Field

The invention belongs to the technical field of intelligent ultrasonic flowmeters, and particularly relates to an ultrasonic flowmeter capable of detecting abnormal states of a reflector plate and a detection method.

Background

Due to the structure and the metering characteristic of the ultrasonic water meter, if the position and the angle of the ultrasonic reflector plate are greatly changed, the propagation direction of ultrasonic waves is deviated, the receiving intensity of the ultrasonic waves is weakened, and the metering precision is reduced. However, since the reflector is fixed in the ultrasonic water meter, it is difficult to check whether the position and angle of the reflector have changed. Currently, for example, chinese patent publication No. CN107255438A, entitled "a simple ultrasonic water meter reflector micro-angle variation measuring device", proposes a link device for measuring an angle, which includes a support housing for supporting a measuring device and protecting an internal structure, a support base of the entire device, a rotating handle connecting rod, an angle dial, a dial pointer, a bubble level device, a worm connecting rod, a driving worm, a driven turbine connecting rod, an angle measuring rotating rod, a lighting lamp, and a plane mirror. Chinese patent CN206410746U, a pipe section structure of ultrasonic water meter with integrated measuring pipe and reflector, proposes that the effective measuring section is injection molded with non-metallic material, and is used as the measuring pipe together with the reflector, and is installed in the pipe section, and the measuring pipe is fixed in the pipe section by positioning bolts, which solves the problem of the inner diameter change of the metal pipe caused by thermal expansion and contraction.

The technical scheme can greatly change the structure of the ultrasonic water meter, the manufacturing difficulty and the manufacturing cost of the water meter are increased, the detection of the ultrasonic reflector is single, and the state of the ultrasonic reflector cannot be comprehensively and effectively detected. At present, no technical scheme for comprehensively and effectively detecting the abnormal state of the ultrasonic reflector exists, and therefore an ultrasonic flowmeter and a detection method capable of detecting the abnormal state of the reflector are provided.

Disclosure of Invention

In order to solve the above problems, the present invention provides an ultrasonic flowmeter and a detection method capable of detecting an abnormal state of a reflector.

The invention relies on monitoring sensors deployed within an ultrasonic flow meter.

The invention discloses a method for detecting abnormal state of a reflector plate, which is characterized by comprising the following steps:

and judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the shaking data of the ultrasonic reflector.

The specific description is as follows:

the judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data and/or the shaking data of the ultrasonic reflector comprises the following steps: judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the surface roughness of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the displacement data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the oscillation data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value and the surface roughness of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value and the displacement data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value and the oscillation data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the surface roughness and the displacement data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not, Judging whether the state of the ultrasonic reflector is abnormal or not according to the surface roughness and the shaking data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the displacement data and the shaking data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value and the surface roughness of the ultrasonic reflector and the displacement data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value and the surface roughness and the shaking data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value, the displacement data and the shaking data of the ultrasonic reflector, judging whether the state of the ultrasonic reflector is abnormal or not according to the surface roughness, the displacement data and the shaking data of the ultrasonic reflector, and judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value, the surface roughness, the displacement data and the shaking data of the ultrasonic reflector.

Preferably, the angle variation value of the ultrasonic wave reflection sheet is any one or more of an angle variation value within a preset time period of a single reflection sheet and a difference between the angle variation values within the preset time periods of two ultrasonic wave emission sheets.

Preferably, the surface roughness of the ultrasonic reflector is obtained according to the difference between the emission intensity and the receiving intensity of the detected sound wave and/or the surface flatness of the ultrasonic reflector detected by a laser detector and/or the thickness variation value of the ultrasonic reflector within a certain time.

Preferably, the displacement data of the ultrasonic reflector is any one or more of a horizontal position change value within a preset time period of the ultrasonic reflector bracket, a vertical position change value within a preset time period of the ultrasonic reflector bracket, and a relative position change value within a preset time period of the ultrasonic reflector bracket and the ultrasonic reflector bracket.

Preferably, the shaking data of the ultrasonic reflector is calculated according to the position data change of the ultrasonic reflector bracket at a plurality of continuous sampling moments and/or the relative position data change of the ultrasonic reflector and the ultrasonic reflector bracket at a plurality of continuous sampling moments.

Preferably, the determining whether the state of the ultrasonic wave reflecting sheet is abnormal or not according to the angle change value of the ultrasonic wave reflecting sheet and/or the surface roughness of the ultrasonic wave reflecting sheet and/or the displacement data and/or the shaking data of the ultrasonic wave reflecting sheet includes:

calculating an abnormal index of the ultrasonic reflector according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data and/or the shaking data of the ultrasonic reflector;

calculating the abnormal tolerance of the ultrasonic reflector plate according to the sound wave receiving range and the metering precision of the ultrasonic transducer;

and when the abnormal index of the ultrasonic reflection sheet is greater than the abnormal tolerance, judging that the state of the ultrasonic reflection sheet is abnormal.

Further preferably, the calculating of the abnormality index of the ultrasonic reflector according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the oscillation data of the ultrasonic reflector is: calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on a relation between a surface roughness of the ultrasonic reflector and an ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector based on an influence of a displacement of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of a wobble of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change of the ultrasonic reflector on ultrasonic reception and a relation between a surface roughness of the ultrasonic reflector and an ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change and a displacement of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change and a wobble of the ultrasonic reflection, Calculating an abnormal index of the ultrasonic reflector according to the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation and the influence of the displacement of the ultrasonic reflector on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation and the influence of the shaking of the ultrasonic reflector on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the influence of the displacement of the ultrasonic reflector and the shaking on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change and the displacement of the ultrasonic reflector on the ultrasonic reception and the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change and the shaking on the ultrasonic reception and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector, calculating a change index of the ultrasonic reflector, The method includes calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change, the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving, calculating an abnormal index of the ultrasonic reflector according to the influence of the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, and calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change, the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation.

A computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the above method.

An ultrasonic flow meter capable of detecting an abnormal state of a reflector plate, comprising:

an ultrasonic flow meter;

a sensor; the sensor is used for detecting an angle change value of the ultrasonic reflector plate and/or surface roughness of the ultrasonic reflector plate and/or displacement data of the ultrasonic reflector plate and/or shaking data of the ultrasonic reflector plate;

a processor;

a memory;

and

one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the above-described method.

Preferably, the sensor comprises any one or more of a device for detecting sound wave emission and reception disposed right above the ultrasonic reflector, a displacement sensor disposed on the ultrasonic reflector support, a laser detector disposed on the side of the ultrasonic reflector, and a vibration sensor disposed on the ultrasonic reflector support.

The method and the system have the advantages that:

(1) the current state data of the ultrasonic reflector can be comprehensively known by detecting the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the shaking data of the ultrasonic reflector through the sensor.

(2) The abnormal index of the ultrasonic reflector plate calculated according to the angle change value and/or the surface roughness and/or the displacement data and/or the shaking data of the ultrasonic reflector plate and the abnormal tolerance of the ultrasonic reflector plate calculated according to the sound wave receiving range and the metering precision of the ultrasonic transducer are used for judging whether the state of the ultrasonic reflector plate is abnormal or not, and the abnormal state of the ultrasonic reflector plate can be effectively detected.

Drawings

FIG. 1 is a flowchart illustrating steps for detecting an abnormal state of a reflector plate according to an embodiment of the present invention;

FIG. 2 is a block diagram of an ultrasonic flow meter system capable of detecting abnormal conditions of a reflector plate according to an embodiment of the present invention.

Detailed Description

The following describes in detail preferred embodiments of the present invention.

The invention relies on monitoring sensors deployed in a flowmeter, and the monitoring sensors comprise a test sound wave transmitting and receiving device deployed right above an ultrasonic reflector, a displacement sensor deployed on an ultrasonic reflector bracket, a laser detector deployed on the side of the ultrasonic reflector, a vibration sensor deployed on the ultrasonic reflector bracket and the like.

The embodiment of the method for detecting the abnormal state of the reflector plate is characterized in that:

and judging whether the state of the ultrasonic reflector is abnormal or not according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the shaking data of the ultrasonic reflector.

The angle change value of the ultrasonic reflection sheet is any one or more of a single reflection sheet angle change value and the difference of the angle change values of the two ultrasonic emission sheets. In a preferred embodiment, a test sound wave transmitting and receiving device is arranged at an original parallel position right above an ultrasonic reflector of the flowmeter, the test sound wave transmitting and receiving device transmits and receives a detection sound wave to and from the current ultrasonic reflector, the distance between the receiving position and the transmitting position is obtained, and the angle change value of a single reflector is calculated according to the geometric relationship between the distance and the angle change value of the reflector. In another preferred embodiment, the angle change values of the two reflection sheets are respectively calculated by adopting the method, and the difference between the angle change values of the two ultrasonic emission sheets is calculated. In another preferred embodiment, the angle variation value is obtained according to a combination of the angle variation value of the single reflection sheet and the angle variation value of the two ultrasonic emission sheets, and the multiple combinations are extreme values and/or average values and/or products and/or summations among multiple items.

The surface roughness of the ultrasonic reflector is obtained according to the difference between the emission intensity and the receiving intensity of the detected sound wave and/or the surface flatness of the ultrasonic reflector detected by a laser detector and/or the thickness change value of the ultrasonic reflector within a certain time.

In table a, a1 to a7 show different embodiments of obtaining the surface roughness of the ultrasonic wave reflecting sheet, and in table a, data such as the emission intensity and reception intensity value of the detected sound wave, the surface flatness of the ultrasonic wave reflecting sheet, and the thickness variation value of the reflecting sheet are referred to.

Table a different embodiments of the surface roughness of the ultrasonic wave reflecting sheet are obtained

The displacement data of the ultrasonic reflector is any one or combination of a horizontal position change value of the ultrasonic reflector bracket, a vertical position change value of the ultrasonic reflector bracket and a relative position change value of the ultrasonic reflector and the ultrasonic reflector bracket. The term combination is extreme value and/or average value and/or product and/or summation among the terms.

The shaking data of the ultrasonic reflector is calculated according to the position data change of the ultrasonic reflector bracket at a plurality of continuous moments and/or the relative position data change of the ultrasonic reflector and the ultrasonic reflector bracket at a plurality of continuous moments. In a preferred embodiment, the shaking data is proportional to the mean and/or variance of the variation values of the position data of the ultrasonic reflector holder at a plurality of consecutive moments. In another preferred embodiment, the oscillation data is proportional to the mean and/or variance of the relative position of the ultrasound reflector and the holder at a plurality of consecutive time instances. The term combination is extreme value and/or average value and/or product and/or summation among the terms.

In table B, B1 to B3 show different embodiments of obtaining the oscillation data of the ultrasonic wave reflection sheet, and the table B relates to the position data change at a plurality of continuous times of the ultrasonic wave reflection sheet holder and the relative position data change at a plurality of continuous times of the ultrasonic wave reflection sheet and the ultrasonic wave reflection sheet holder.

TABLE B different embodiments for obtaining oscillation data of an ultrasonic reflector

Preferably, the determining whether the state of the ultrasonic wave reflection sheet is abnormal according to the angle change value of the ultrasonic wave reflection sheet and/or the surface roughness of the ultrasonic wave reflection sheet and/or the displacement data of the ultrasonic wave reflection sheet and/or the oscillation data of the ultrasonic wave reflection sheet, where the flowchart is shown in fig. 1, includes the steps of:

calculating an abnormal index of the ultrasonic reflector according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data and/or the shaking data of the ultrasonic reflector;

calculating the abnormal tolerance of the ultrasonic reflector plate according to the sound wave receiving range and the metering precision of the ultrasonic transducer;

and when the abnormal index of the ultrasonic reflection sheet is greater than the abnormal tolerance, judging that the state of the ultrasonic reflection sheet is abnormal.

In a preferred embodiment, the sound wave receiving range of the ultrasonic transducer is d, the metering precision is j, and the abnormal tolerance y of the ultrasonic reflection sheet is calculated to be f1 d j, wherein f1 is a calculation coefficient obtained by training in advance. In the present embodiment, the sound wave receiving range d of the ultrasonic transducer is 5 cm, the measurement accuracy j is 0.1, the calculation coefficient f1 obtained by training in advance is 2, the abnormality tolerance y of the ultrasonic reflection sheet is calculated to be f1 · d · j 2 × 5 × 0.1 is 1, and when the abnormality index x of the ultrasonic reflection sheet is greater than the abnormality tolerance y, it is determined that the state of the ultrasonic reflection sheet is abnormal.

In another preferred embodiment, the sound wave receiving range of the ultrasonic transducer is d, the metering accuracy is j, and the abnormal tolerance y of the ultrasonic reflection sheet is calculated to be f2 · d + f3 · j, wherein f2 and f3 are calculation coefficients obtained by training in advance. In the present embodiment, the sound wave receiving range d of the ultrasonic transducer is 5 cm, the measurement accuracy j is 0.1, the calculation coefficient f2 obtained by training in advance is 0.2, the f3 is 1, the abnormality tolerance y of the ultrasonic reflection sheet is calculated to be f2 · d + f3 · j is 0.2 × 5+1 × 0.1 is 1.1, and when the abnormality index x of the ultrasonic reflection sheet is greater than the abnormality tolerance y, it is determined that the state of the ultrasonic reflection sheet is abnormal.

The abnormal index of the ultrasonic reflector is calculated according to the angle change value of the ultrasonic reflector and/or the surface roughness of the ultrasonic reflector and/or the displacement data of the ultrasonic reflector and/or the shaking data of the ultrasonic reflector, and is as follows: calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on a relation between a surface roughness of the ultrasonic reflector and an ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector based on an influence of a displacement of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of a wobble of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change of the ultrasonic reflector on ultrasonic reception and a relation between a surface roughness of the ultrasonic reflector and an ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change and a displacement of the ultrasonic reflector on ultrasonic reception, calculating an abnormal index of the ultrasonic reflector based on an influence of an angular change and a wobble of the ultrasonic reflection, Calculating an abnormal index of the ultrasonic reflector according to the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation and the influence of the displacement of the ultrasonic reflector on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation and the influence of the shaking of the ultrasonic reflector on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the influence of the displacement of the ultrasonic reflector and the shaking on the ultrasonic reception, calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change and the displacement of the ultrasonic reflector on the ultrasonic reception and the relationship between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change and the shaking on the ultrasonic reception and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, calculating an abnormal index of the ultrasonic reflector, calculating a change index of the ultrasonic reflector, The method includes calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change, the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving, calculating an abnormal index of the ultrasonic reflector according to the influence of the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation, and calculating an abnormal index of the ultrasonic reflector according to the influence of the angular change, the displacement and the shaking of the ultrasonic reflector on the ultrasonic receiving and the relation between the surface roughness of the ultrasonic reflector and the ultrasonic reflection attenuation.

Table C, C1 to C15, shows various embodiments of calculating the abnormality index of the ultrasonic wave reflecting sheet, and the table C refers to the angle change value of the ultrasonic wave reflecting sheet, the surface roughness of the ultrasonic wave reflecting sheet, the displacement data of the ultrasonic wave reflecting sheet, and the fluctuation data of the ultrasonic wave reflecting sheet.

TABLE C different embodiments for calculating the abnormality index of the ultrasonic reflectors

A computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the above method.

An ultrasonic flow meter capable of detecting abnormal state of a reflector plate, which is schematically shown in fig. 2, is characterized by comprising:

an ultrasonic flow meter;

a sensor; the sensor is used for detecting an angle change value of the ultrasonic reflector plate and/or surface roughness of the ultrasonic reflector plate and/or displacement data of the ultrasonic reflector plate and/or shaking data of the ultrasonic reflector plate;

a processor;

a memory;

and

one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the above-described method.

Preferably, the sensor comprises any one or more of a device for detecting sound wave emission and reception disposed right above the ultrasonic reflector, a displacement sensor disposed on the ultrasonic reflector support, a laser detector disposed on the side of the ultrasonic reflector, and a vibration sensor disposed on the ultrasonic reflector support.

Of course, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention, and not as a limitation to the present invention, and that the changes and modifications of the above embodiments will fall within the protection scope of the present invention as long as they are within the scope of the present invention.