CN113655485A - Method, device and equipment for imaging electrode end face and storage medium - Google Patents
Method, device and equipment for imaging electrode end face and storage medium Download PDFInfo
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Abstract
The application relates to an electrode end face imaging method, an electrode end face imaging device, electrode end face imaging equipment and a storage medium, in particular to the field of signal detection. The method comprises the following steps: acquiring a target focus distance; determining sound path information corresponding to each array element according to the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the target focus distance; determining ultrasonic wave sending time corresponding to each array element according to the sound path information corresponding to each array element; and carrying out data processing on electric signals corresponding to the ultrasonic reflection signals reflected by the focuses of the electrode end face, which are received in sequence, so as to obtain image information of the electrode end face. According to the scheme, the image information of the clicked end face can be obtained by carrying out data processing on the focused ultrasonic reflection signals at the focuses, so that the monitoring of the electrode end face is realized, and the control precision of the temperature and the chemical reaction in the submerged arc furnace is improved.
Description
Technical Field
The invention relates to the field of signal detection, in particular to an electrode end face imaging method, device, equipment and storage medium.
Background
The ore-smelting furnace is an industrial electric furnace with huge power consumption, also called as a resistance electric furnace or an electric arc electric furnace, and is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent, solvent and the like.
When the ore-smelting furnace works, a carbonaceous or magnesium refractory material is used as a furnace lining, a self-baking electrode is inserted into furnace charge to carry out submerged arc operation, the furnace charge is preheated by furnace charge current, and ionized furnace gas forms directional high-temperature ion flow-electric arc, so that electric energy is converted into heat energy. The state of the arc depends on the distance of the electrode tip from the discharge, the conductivity of the discharge, the voltage and the temperature around the electrode and the resistance properties of the charge medium. Through the length monitoring of the electrode tip, the discharge condition of the electrode in the furnace can be reflected, and the temperature in the furnace and the chemical reaction in the furnace are conveniently controlled.
In the scheme, the length of the electrode tip can only be monitored, the electrode end face cannot be effectively monitored, and the control precision of the temperature and the chemical reaction in the submerged arc furnace is low.
Disclosure of Invention
The application provides an electrode end face imaging method, an electrode end face imaging device, electrode end face imaging equipment and a storage medium, which can improve the control precision of the temperature and chemical reaction in a submerged arc furnace.
In one aspect, a method of imaging an end face of an electrode is provided, the method being used in a data processor in an ultrasound detection system; the ultrasonic detection system comprises a data processor, an ultrasonic phased array and a main control machine; the main control machine is used for controlling ultrasonic waves emitted by each array element in the ultrasonic phased array; the method comprises the following steps:
acquiring a target focus distance; the target focus distance is used for indicating the distance between a target focus of the electrode end face and the center position of the ultrasonic phased array;
determining sound path information corresponding to each array element according to the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the target focus distance; the acoustic path information is used for indicating the distance of the ultrasonic wave emitted by the array element to reach the target focus;
determining the ultrasonic wave sending time corresponding to each array element according to the sound path information corresponding to each array element, so that the main control computer indicates the ultrasonic waves emitted by each array element according to the ultrasonic wave sending time corresponding to each array element, and focuses the ultrasonic waves at the target focus;
and carrying out data processing on the sequentially received ultrasonic reflection signals reflected by the focuses of the electrode end face to obtain image information of the electrode end face.
In still another aspect, there is provided an imaging apparatus of an electrode end face, the apparatus including:
the target distance acquisition module is used for acquiring a target focus distance; the target focal point distance is used for indicating the distance between the target focal point of the electrode end face and the central position of the ultrasonic phased array;
the sound path information acquisition module is used for determining sound path information corresponding to each array element according to the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the target focus distance; the acoustic path information is used for indicating the distance of the ultrasonic wave emitted by the array element to reach the target focus;
a sending time determining module, configured to determine, according to the acoustic path information corresponding to each array element, an ultrasonic sending time corresponding to each array element, so that the master control indicates, according to the ultrasonic sending time corresponding to each array element, an ultrasonic wave emitted by each array element to be focused at the target focus;
and the signal processing module is used for carrying out data processing on the ultrasonic reflection signals reflected by the focuses of the electrode end faces received in sequence to obtain image information of the electrode end faces.
In a possible implementation manner, the sound path information obtaining module includes:
the axial distance acquisition unit is used for determining the distance between a target focus and the center position of the ultrasonic phased array in a first axial direction and the distance between the target focus and the ultrasonic phased array in a second axial direction according to the included angle between the target focus line segment and the ultrasonic phased array and the target focus distance; the target focus line segment is a connection line of the target focus and a midpoint of the ultrasonic phased array; the first axis is parallel to the ultrasound phased array plane; the second axial direction is perpendicular to the ultrasonic phased array plane;
an array element focal point distance obtaining unit, configured to perform difference processing on a distance between the target focal point and a center position of the ultrasonic phased array in the first axial direction and a distance between each array element and the center position of the ultrasonic phased array, and determine a distance between each array element and the target focal point in the first axial direction;
and the sound path information acquisition unit is used for determining the distance between each array element and the target focus according to the distance between each array element and the target focus in the first axial direction and the distance between the target focus and the ultrasonic phased array in the second axial direction, and acquiring the sound path information corresponding to each array element.
In a possible implementation, the axial distance obtaining unit is configured to,
acquiring a sine value of an included angle between a target focus line segment and the ultrasonic phased array and a product of the target focus distance, and taking the product as a distance between the target focus and the center position of the ultrasonic phased array in a first axial direction;
and acquiring a cosine value of an included angle between a target focus line segment and the ultrasonic phased array and a product between the target focus distances, and taking the product as the distance between the target focus and the ultrasonic phased array in the second axial direction.
In a possible implementation manner, the sending time determining module includes:
a sound path difference obtaining unit, configured to obtain sound path information corresponding to each array element, and a sound path difference between the sound path information and the target focus distance;
the time difference acquisition unit is used for determining the sending time difference between each array element and the array element at the central position of the ultrasonic phased array according to the sound path difference value;
and the sending time acquiring unit is used for determining the sending time of the ultrasonic wave corresponding to each array element according to the sending time difference between each array element and the array element at the central position of the ultrasonic phased array and the sending time of the array element at the central position of the ultrasonic phased array.
In a possible implementation manner, the sending time determining module further includes:
and the sending sequence acquiring unit is used for determining the sending sequence of the ultrasonic waves of each array element according to the sending time difference between each array element and the array element at the central position of the ultrasonic phased array so as to control each array element of the ultrasonic phased array to send the ultrasonic waves according to the sending sequence of the ultrasonic waves.
In one possible implementation manner, the signal processing module is configured to,
carrying out data processing on ultrasonic reflection signals reflected by all focuses of the electrode end face, which are received in sequence, so as to obtain measurement depth information of all focuses on the electrode end face;
and constructing image information of the electrode end face according to the measurement depth information of each focus on the electrode end face.
In one possible implementation manner, the signal processing module is further configured to,
acquiring a first receiving moment when a receiving point of the ultrasonic phased array receives an ultrasonic wave reflected signal reflected by a first focus;
determining a first transmission time of the ultrasonic wave transmitted by the central array element of the ultrasonic phased array, which is reflected to a receiving point on the ultrasonic phased array by the first focus according to the first receiving time and the ultrasonic wave transmitting time of the central array element of the ultrasonic phased array;
determining the measurement depth information of the first focus according to the first transmission time and the original transmission time corresponding to the first focus; the original transit time is used to indicate the transit time of the first focal point reflecting ultrasound without loss.
In yet another aspect, a computer device is provided, which includes a processor and a memory, wherein the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement the above-mentioned method for imaging an end face of an electrode.
In yet another aspect, a computer-readable storage medium is provided having at least one instruction stored therein, the at least one instruction being loaded and executed by a processor to implement the method for imaging an end face of an electrode as described above.
In yet another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the imaging method of the electrode end face.
The technical scheme provided by the application can comprise the following beneficial effects:
when the electrode end face is detected, for any target focus of the electrode end face, the distance between the target focus of the electrode end face and the central position of the ultrasonic phased array and the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array are firstly obtained, the target focus, the central position of the ultrasonic phased array and any array element in each array element are constructed, and a triangle is formed jointly, so that the sonic path information of any array element in each array element and the target focus is determined, and the ultrasonic wave sending time corresponding to each array element is determined according to the sonic path information corresponding to each array element, so that the ultrasonic wave emitted by each array element is focused at the target focus. The image information of the clicked end face can be obtained by carrying out data processing on the ultrasonic reflection signals focused at the focuses, so that the monitoring of the electrode end face is realized, and the control precision of the temperature and the chemical reaction in the submerged arc furnace is improved.
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In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram illustrating a configuration of an imaging system of an electrode end face according to an exemplary embodiment.
FIG. 2 is a method flow diagram illustrating a method of imaging an end face of an electrode according to one exemplary embodiment.
FIG. 3 is a method flow diagram illustrating a method of imaging an end face of an electrode according to one exemplary embodiment.
Fig. 4 shows a spatial position relationship diagram according to an embodiment of the present application.
FIG. 5 is a method diagram illustrating a method of imaging an end face of an electrode according to one exemplary embodiment.
Fig. 6 is a block diagram illustrating a structure of an imaging device of an electrode end face according to an exemplary embodiment.
Fig. 7 shows a block diagram of a computer device according to an exemplary embodiment of the present application.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be understood that "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, a indicates B, which may mean that a directly indicates B, e.g., B may be obtained by a; it may also mean that a indicates B indirectly, for example, a indicates C, and B may be obtained by C; it can also mean that there is an association between a and B.
In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and be indicated, configure and configured, and so on.
In the embodiment of the present application, "predefining" may be implemented by saving a corresponding code, table, or other manners that may be used to indicate related information in advance in a device (for example, including a terminal device and a network device), and the present application is not limited to a specific implementation manner thereof.
Fig. 1 is a schematic diagram illustrating a configuration of an imaging system of an electrode end face according to an exemplary embodiment. The ultrasonic detection system comprises a data processor 110, an ultrasonic phased array 120 and a main control computer 130;
the main control computer 130 is used for controlling each array element in the ultrasonic phased array 120 (or referred to as an ultrasonic phased array transducer) to transmit ultrasonic waves.
The ultrasonic phased array transducer comprises a phased array surface; a plurality of ultrasonic phased array elements exist on the phased array surface, and the ultrasonic phased array elements are used for sending ultrasonic waves when receiving ultrasonic wave sending instructions; the ultrasonic phased array element is also used for producing an electric signal corresponding to the ultrasonic signal when the ultrasonic wave is received.
Alternatively, the ultrasonic phased array transducer may be located at the electrode lift mechanism junction. The ultrasonic phased array transducer can acquire the depth information of the electrode and the image information of the end face of the electrode in real time at the joint of the electrode lifting mechanism in the submerged arc furnace.
Optionally, the main control computer 130 is configured to set parameters of the ultrasonic phased array transducer, control transmission and reception of ultrasonic signals, excite each array element according to delay time of the nth array element relative to the array element of the first transmission signal, and obtain a focusing effect on any point on the electrode end face after coherent superposition of beams.
Optionally, the main control computer 130 is further configured to amplify and demodulate the reflected ultrasonic signal, and transmit the amplified and demodulated signal to the data processor.
Optionally, the data processor 110 includes a signal processing application program, and the signal processing application program may perform data processing on the signal after the signal is amplified and demodulated by the main control computer, so as to obtain data information corresponding to the ultrasonic signal.
Optionally, the data processor may be a terminal device with a high-performance processor, such as a PC, a notebook, an intelligent mobile terminal, and the like.
Optionally, the data processor may also be a server.
Optionally, the server may be an independent physical server, a server cluster formed by a plurality of physical servers, or a distributed system, and may also be a cloud server that provides technical computing services such as cloud service, a cloud database, cloud computing, a cloud function, cloud storage, network service, cloud communication, middleware service, domain name service, security service, CDN, and a big data and artificial intelligence platform.
Optionally, the system may further include a management device, where the management device is configured to manage the system (e.g., manage connection states between the modules and the server, and the management device is connected to the server through a communication network. Optionally, the communication network is a wired network or a wireless network.
Optionally, the wireless network or wired network described above uses standard communication techniques and/or protocols. The network is typically the internet, but may be any other network including, but not limited to, a local area network, a metropolitan area network, a wide area network, a mobile, a limited or wireless network, a private network, or any combination of virtual private networks. In some embodiments, data exchanged over the network is represented using techniques and/or formats including hypertext markup language, extensible markup language, and the like. All or some of the links may also be encrypted using conventional encryption techniques such as secure sockets layer, transport layer security, virtual private network, internet protocol security, and the like. In other embodiments, custom and/or dedicated data communication techniques may also be used in place of, or in addition to, the data communication techniques described above.
FIG. 2 is a method flow diagram illustrating a method of imaging an end face of an electrode according to one exemplary embodiment. The method is performed by a computer device, which may be a data processor in an imaging system of the electrode end face as shown in fig. 1. As shown in fig. 2, the method for imaging the end face of the electrode may include the steps of:
Wherein, the target focus distance is used for indicating the distance between the target focus of the electrode end face and the central position of the ultrasonic phased array.
Optionally, the target focus is any one of various points on the end face of the electrode.
The acoustic path information is used for indicating the distance of the ultrasonic wave emitted by the array element to reach the target focus.
When the distance between any array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the distance between the target focal point and the central position of the ultrasonic phased array are obtained, a triangle with the target focal point, the central position of the ultrasonic phased array and each array element as a vertex can be constructed according to the data, the side length of the triangle is obtained by solving the triangle, and the sound path information from any array element to the target focal point can be obtained.
After the sound path information corresponding to each array element is obtained, the distance that each array element needs to travel when sending ultrasonic waves to the target focus is obtained. In order to ensure that the ultrasonic waves transmitted by each array element are transmitted to the target focus at the same time, different ultrasonic wave transmission times can be set for different array elements, so that the ultrasonic wave beams transmitted by the array elements are focused on the target focus, and the intensity of the ultrasonic wave reflected signal reflected by the target focus is increased.
And step 204, performing data processing on the sequentially received ultrasonic reflection signals reflected by the focuses of the electrode end face to obtain image information of the electrode end face.
When ultrasonic reflected signals reflected back by each focus of the electrode end face are received in sequence, data processing can be carried out on the ultrasonic signals reflected back by each focus, the depth condition of each focus in the electrode end face is obtained, and therefore image information used for indicating the loss condition of the electrode end face is obtained.
In summary, when the electrode end face is detected, for any target focus of the electrode end face, the distance between the target focus of the electrode end face and the central position of the ultrasonic phased array and the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array are obtained first, a triangle formed by the target focus, the central position of the ultrasonic phased array and any array element in each array element is constructed, and therefore the acoustic path information of any array element in each array element and the target focus is determined, and the ultrasonic wave sending time corresponding to each array element is determined according to the acoustic path information corresponding to each array element, so that the ultrasonic wave sent by each array element is focused at the target focus. The image information of the clicked end face can be obtained by carrying out data processing on the ultrasonic reflection signals focused at the focuses, so that the monitoring of the electrode end face is realized, and the control precision of the temperature and the chemical reaction in the submerged arc furnace is improved.
FIG. 3 is a method flow diagram illustrating a method of imaging an end face of an electrode according to one exemplary embodiment. The method is performed by a computer device, which may be a data processor in an imaging system of the electrode end face as shown in fig. 1. As shown in fig. 3, the method for imaging the end face of the electrode may include the steps of:
Before image acquisition of the electrode end face is needed, size information of the electrode end face can be determined, for example, for the same submerged arc furnace, the size of the electrode tip can be standardized, that is, the size of the electrode end face should also be fixed.
Therefore, when the image of the electrode end face is acquired, the distance information of the joint of the electrode end face and the electrode lifting mechanism of the submerged arc furnace can be determined, and then the distance information of the joint of each point of the electrode end face and the electrode lifting mechanism is determined through the pythagorean theorem (when the ultrasonic phased array is positioned at the joint of the electrode lifting mechanism, the distance between each point of the electrode end face and the center position of the ultrasonic phased array is determined).
Wherein the target focal point line segment is a connection line of the target focal point and the central position of the ultrasonic phased array; the first axis is parallel to the ultrasonic phased array plane; the second axial direction is perpendicular to the ultrasound phased array plane.
After the target focus to be measured is determined, the target focus can be connected with the central position of the ultrasonic phased array to obtain a target focus line segment, and the included angle relationship between the target focus line segment and the ultrasonic phased array is obtained. According to the length of the target focus line segment (namely the target focus distance) and the included angle relationship between the target focus and the ultrasonic phased array plane, the distance between the target focus and the central position of the ultrasonic phased array in the first axial direction and the distance between the target focus and the central position of the ultrasonic phased array in the second axial direction can be obtained through the sine-cosine relationship, and therefore the spatial position relationship between the target focus and the central position of the ultrasonic phased array is determined.
In one possible implementation manner, a product between a sine value of an included angle between a target focal line segment and the ultrasonic phased array and the target focal distance is obtained and is used as a distance between the target focal point and the central position of the ultrasonic phased array in the first axial direction.
And acquiring the product of the cosine value of the included angle between the target focal line segment and the ultrasonic phased array and the target focal distance, and taking the product as the distance between the target focal line segment and the ultrasonic phased array in the second axial direction.
Please refer to fig. 4, which illustrates a spatial relationship diagram according to an embodiment of the present application. As shown in fig. 4, a central position 401 in the ultrasonic phased array 400 and a target focal point 411 on an electrode end face of an electrode tip 410 form a target focal line segment, which forms an angle a with a central axis of the ultrasonic phased array 400.
Therefore, according to the target focal line segment and the sine value of the angle A, the distance between the target focal point and the center position of the ultrasonic phased array in the first axial direction can be obtained; according to the target focal point line segment and the cosine value of the angle A, the distance between the target focal point and the ultrasonic phased array in the second axial direction can be obtained.
Since each array element is in the plane of the ultrasonic phased array and the first axis is parallel to the plane of the ultrasonic phased array, the array elements can be considered to be arranged in the first axis.
When the array elements are arranged in the first axial direction, the distance between each array element and the central position of the ultrasonic phased array is the distance between each array element and the central position of the ultrasonic phased array in the first axial direction.
Therefore, when the distance between the target focus and the center position of the ultrasonic phased array in the first axial direction and the distance between each array element and the ultrasonic phased array in the first axial direction are obtained, the distance between the target focus and each array element in the first axial direction can be obtained by making a difference.
And step 304, determining the distance between each array element and the target focus according to the distance between each array element and the target focus in the first axial direction and the distance between the target focus and the ultrasonic phased array in the second axial direction, and determining the sound path information corresponding to each array element.
Since the first axial direction and the second axial direction are perpendicular to each other, taking the first array element in each array element as an example, when the distance between the first array element and the target focus in the first axial direction is obtained, the distance between the first array element and the target focus in the first axial direction can be used as a right-angled side of a right-angled triangle, and then the distance between the target focus and the ultrasonic phased array in the second axial direction can be used as another right-angled side of the right-angled triangle, and distance information between the target focus and the first array element in the ultrasonic phased array is obtained through the pythagorean theorem, at this time, the distance information between the target focus and the first array element in the ultrasonic phased array can be used to represent a sound path (namely, sound path information) through which the ultrasonic wave emitted by the first array element is transmitted to the target focus.
After the sound path information corresponding to each array element is obtained, the sound path information corresponding to each array element can be compared with the target focus distance respectively to obtain the sound path difference value between the distance between each array element and the target focus distance, so that the relation between the distance from each array element to the target focus and the distance from the ultrasonic phased array to the target focus is determined.
And step 306, determining the sending time difference between each array element and the array element at the central position of the ultrasonic phased array according to the sound path difference value.
When the relationship between the distance from each array element to the target focus and the distance from the ultrasonic phased array to the target focus is obtained, that is, the transmission time of the ultrasonic wave from the array element at the central position of the ultrasonic phased array to the target focus is taken as a standard, and the offset of the transmission time of the ultrasonic wave from each array element when the ultrasonic wave reaches the target focus is determined.
In a possible implementation manner, acquiring the acoustic path information corresponding to each array element and the acoustic path difference between the acoustic path information and the target focus distance; and determining the sending time difference of each array element and the array element at the central position of the ultrasonic phased array according to the sound path difference value.
When the acoustic path information corresponding to each array element is obtained, the target focus distance is the distance between the array element at the central position of the ultrasonic phased array and the target focus, so that the acoustic path information corresponding to each other array element and the target focus distance are subjected to difference processing, and the acoustic path difference value corresponding to each array element can be obtained.
At this time, the sound path difference value corresponding to each array element represents the distance from each array element to the target focus and the difference value between the distance from the array element at the central position of the ultrasonic phased array to the target focus, so that the difference between the ultrasonic transmission time of each array element and the ultrasonic transmission time corresponding to the array element at the central position can be determined by comparing the sound path difference value corresponding to each array element with the sound velocity in the medium.
In order to ensure that the ultrasonic waves emitted by each array element are transmitted to the central position at the same time, the ultrasonic wave transmission time corresponding to each array element can be adjusted according to the difference between the determined ultrasonic wave transmission time of each array element and the ultrasonic wave transmission time corresponding to the array element at the central position as the transmission time difference corresponding to each array element.
And 307, determining the ultrasonic wave sending time corresponding to each array element according to the sending time difference between each array element and the array element at the central position of the ultrasonic phased array and the sending time of the array element at the central position of the ultrasonic phased array.
In a possible implementation manner of the embodiment of the present application, the transmission time of an array element at the central position of an ultrasonic phased array may be used as a reference, and the ultrasonic transmission time corresponding to each array element may be determined according to the transmission time difference between each array element and the array element at the central position of the ultrasonic phased array.
Optionally, when the transmission time difference between each array element and the array element at the central position of the ultrasonic phased array is a positive number, the ultrasonic transmission time of the array element is later than that of the array element at the central position of the ultrasonic phased array; when the transmission time difference between each array element and the array element at the central position of the ultrasonic phased array is a positive number, the ultrasonic transmission time of the array element is later than the ultrasonic transmission time of the array element at the central position of the ultrasonic phased array.
In a possible implementation manner, the ultrasonic wave transmission sequence of each array element is determined according to the transmission time difference between each array element and the array element at the central position of the ultrasonic phased array, so that each array element of the ultrasonic phased array is controlled to transmit the ultrasonic wave according to the ultrasonic wave transmission sequence.
When the sending time difference between each array element and the array element at the central position of the ultrasonic phased array is determined, the sending sequence of the ultrasonic waves of each array element can be determined according to the magnitude relation of the sending time difference, so that each array element of the ultrasonic phased array is controlled to send the ultrasonic waves according to the sending sequence of the ultrasonic waves.
And 308, processing the sequentially received ultrasonic reflection signals reflected by the focuses of the electrode end face to obtain image information of the electrode end face.
When the target focus in the electrode end face is detected, after the ultrasonic transmission time of each array element is determined, the ultrasonic transmission time corresponding to each array element can be transmitted to the main control computer, so that the main control computer controls each array element in the ultrasonic phased array to transmit an ultrasonic signal at the appointed time corresponding to each array element, the ultrasonic signal reaches the target focus at the same time, the ultrasonic beam is focused on the target focus, and the target focus is measured.
Similarly, for any one of the focuses on the end face of the electrode, the ultrasonic reflection signal corresponding to each focus on the end face of the electrode can be obtained by the above-mentioned measurement.
Optionally, the ultrasonic phased array may receive the ultrasonic reflection signal, generate a corresponding electrical signal according to the ultrasonic reflection signal, amplify and modulate the electrical signal by the main control computer, and transmit the amplified and modulated electrical signal to the data storage device for data processing.
In a possible implementation manner, data processing is performed on electrical signals corresponding to ultrasonic reflection signals reflected by the focuses of the electrode end face, which are received in sequence, so as to obtain measurement depth information of the focuses on the electrode end face; and constructing image information of the electrode end face according to the measurement depth information of each focus on the electrode end face.
When the electric signal corresponding to the ultrasonic reflection signal is acquired, the transmission time of the ultrasonic reflection signal can be determined, so that the actual path of the ultrasonic reflection signal is determined, and the relationship (namely, the measurement depth information) between each focus on the electrode end face and the electrode end face is determined.
Optionally, when the measurement depth information is 0, it indicates that no loss occurs on the end face of the electrode at the focal point; when the measurement depth information is greater than 0, that is, the electrode end face at the focus is already eroded and lost, the measurement depth information may indicate the extent to which the electrode end face is eroded and lost.
In a possible implementation manner, a first receiving time when a receiving point of the ultrasonic phased array receives an ultrasonic reflection signal reflected by a first focus is obtained; determining the first transmission time of the ultrasonic wave transmitted by the central array element of the ultrasonic phased array, which is reflected to a receiving point on the ultrasonic phased array by the first focus according to the first receiving time and the ultrasonic wave transmitting time of the central array element of the ultrasonic phased array; determining the measurement depth information of the first focus according to the first transmission time and the original transmission time corresponding to the first focus; the raw transit time is used to indicate the transit time of the reflected ultrasound wave from the first focal point without loss.
For a first focus point of the focus points, when a receiving point of the ultrasonic phased array receives a first receiving time of an ultrasonic reflection signal reflected by the first focus point, a first transmission time of an ultrasonic wave transmitted by a central array element of the ultrasonic phased array and reflected to the receiving point on the ultrasonic phased array by the first focus point may be determined according to the first receiving time of the ultrasonic reflection signal and an ultrasonic wave transmitting time of the central array element of the ultrasonic reflection signal.
At this time, according to the first transmission time, the distance from the ultrasonic wave transmitted by the central array element of the ultrasonic phased array to the receiving point on the ultrasonic phased array through the first focus can be determined. Due to the determination of the position of the central array element, the determination of the position of the first focus in the first axial direction and the determination of the position of the receiving point of the ultrasonic phased array, the position of the first focus in the second axial direction when the first transmission time is met can be determined. The difference between the position of the first focus in the second axial direction and the position of the electrode end face in the second axial direction is the movement in the second axial direction generated after the first focus is lost, and the movement is the measurement depth information.
In summary, when the electrode end face is detected, for any target focus of the electrode end face, the distance between the target focus of the electrode end face and the central position of the ultrasonic phased array and the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array are obtained first, a triangle formed by the target focus, the central position of the ultrasonic phased array and any array element in each array element is constructed, and therefore the acoustic path information of any array element in each array element and the target focus is determined, and the ultrasonic wave sending time corresponding to each array element is determined according to the acoustic path information corresponding to each array element, so that the ultrasonic wave sent by each array element is focused at the target focus. The image information of the clicked end face can be obtained by carrying out data processing on the ultrasonic reflection signals focused at the focuses, so that the monitoring of the electrode end face is realized, and the control precision of the temperature and the chemical reaction in the submerged arc furnace is improved.
FIG. 5 is a method diagram illustrating a method of imaging an end face of an electrode according to one exemplary embodiment. The scheme shown in the embodiment of the application comprises the following steps.
And S501, arranging an ultrasonic phased array transducer at the joint of the electrode lifting mechanism.
S502, setting transducer parameters, and delaying the delay time t of the nth array element relative to the array element of the first transmitting signalnAnd exciting each array element according to the delay, and obtaining the focusing effect on any point on the end surface of the electrode after coherent superposition of the wave beams.
The determination process of the delay time (i.e. the transmission time difference) is as follows:
the sound path s of the nth array element transmitting signals to the focus point is as follows: the center of the transducer array is used as an original point, the center distance of each array element is d, the included angle between a scanning point P and the vertical normal of the transducer array element is theta, the distance from the scanning point to the original point is F, and the nth array element transmits a signal to the sound path s of the scanning pointnComprises the following steps:
the acoustic path difference between the acoustic beam emitted by the nth array element and the distance from the array center to the scanning point is as follows:
Δs＝smax-sn
smaxis the maximum sound path of each array element from the scanning point.
Delay time t of array elementn: the delay time of the nth array element relative to the array element of the first transmitting signal is as follows:
t0the first time a signal is transmitted, c is the speed of sound propagation in the medium.
And S503, the main control computer amplifies and demodulates the reflected ultrasonic signals and transmits the data to the computer by using the data acquisition module.
And S504, the data processor processes and performs imaging analysis on the data to obtain an electrode end face ultrasonic image.
Optionally, the data processing method may be as shown in the embodiment shown in fig. 3, and is not described here again.
The method disclosed by the embodiment of the application can accurately perform imaging detection on the end face of the electrode in the submerged arc furnace in real time, monitor the loss of the end face of the electrode and the discharge in the furnace, and enable an operator to adjust the depth of the electrode in the furnace according to an imaging result, adjust the temperature in the submerged arc furnace, improve the natural power factor of the submerged arc furnace, accurately judge the roasting condition of the self-baking electrode in the submerged arc furnace, feed back the chemical reaction state in the furnace and reduce accidents.
Fig. 6 is a block diagram illustrating a structure of an imaging device of an electrode end face according to an exemplary embodiment. The imaging device of the electrode end face comprises:
a target distance obtaining module 601, configured to obtain a target focal distance; the target focal point distance is used for indicating the distance between the target focal point of the electrode end face and the central position of the ultrasonic phased array;
a sound path information obtaining module 602, configured to determine, according to a distance between each array element in an ultrasonic phased array and a center position of the ultrasonic phased array, and the target focus distance, sound path information corresponding to each array element; the acoustic path information is used for indicating the distance of the ultrasonic wave emitted by the array element to reach the target focus;
a sending time determining module 603, configured to determine, according to the acoustic path information corresponding to each array element, an ultrasonic sending time corresponding to each array element, so that the master controller instructs, according to the ultrasonic sending time corresponding to each array element, an ultrasonic wave emitted by each array element to focus on the target focus;
the signal processing module 604 is configured to perform data processing on the sequentially received ultrasonic reflection signals reflected by the respective focuses of the electrode end faces to obtain image information of the electrode end faces.
In a possible implementation manner, the sound path information obtaining module includes:
the axial distance acquisition unit is used for determining the distance between a target focus and the center position of the ultrasonic phased array in a first axial direction and the distance between the target focus and the ultrasonic phased array in a second axial direction according to the included angle between the target focus line segment and the ultrasonic phased array and the target focus distance; the target focus line segment is a connection line of the target focus and a midpoint of the ultrasonic phased array; the first axis is parallel to the ultrasound phased array plane; the second axial direction is perpendicular to the ultrasonic phased array plane;
an array element focal point distance obtaining unit, configured to perform difference processing on a distance between the target focal point and a center position of the ultrasonic phased array in the first axial direction and a distance between each array element and the center position of the ultrasonic phased array, and determine a distance between each array element and the target focal point in the first axial direction;
and the sound path information acquisition unit is used for determining the distance between each array element and the target focus according to the distance between each array element and the target focus in the first axial direction and the distance between the target focus and the ultrasonic phased array in the second axial direction, and acquiring the sound path information corresponding to each array element.
In a possible implementation, the axial distance obtaining unit is configured to,
acquiring a sine value of an included angle between a target focus line segment and the ultrasonic phased array and a product of the target focus distance, and taking the product as a distance between the target focus and the center position of the ultrasonic phased array in a first axial direction;
and acquiring a cosine value of an included angle between a target focus line segment and the ultrasonic phased array and a product between the target focus distances, and taking the product as the distance between the target focus and the ultrasonic phased array in the second axial direction.
In a possible implementation manner, the sending time determining module includes:
a sound path difference obtaining unit, configured to obtain sound path information corresponding to each array element, and a sound path difference between the sound path information and the target focus distance;
the time difference acquisition unit is used for determining the sending time difference between each array element and the array element at the central position of the ultrasonic phased array according to the sound path difference value;
and the sending time acquiring unit is used for determining the sending time of the ultrasonic wave corresponding to each array element according to the sending time difference between each array element and the array element at the central position of the ultrasonic phased array and the sending time of the array element at the central position of the ultrasonic phased array.
In a possible implementation manner, the sending time determining module further includes:
and the sending sequence acquiring unit is used for determining the sending sequence of the ultrasonic waves of each array element according to the sending time difference between each array element and the array element at the central position of the ultrasonic phased array so as to control each array element of the ultrasonic phased array to send the ultrasonic waves according to the sending sequence of the ultrasonic waves.
In one possible implementation manner, the signal processing module is configured to,
carrying out data processing on ultrasonic reflection signals reflected by all focuses of the electrode end face, which are received in sequence, so as to obtain measurement depth information of all focuses on the electrode end face;
and constructing image information of the electrode end face according to the measurement depth information of each focus on the electrode end face.
In one possible implementation manner, the signal processing module is further configured to,
acquiring a first receiving moment when a receiving point of the ultrasonic phased array receives an ultrasonic wave reflected signal reflected by a first focus;
determining a first transmission time of the ultrasonic wave transmitted by the central array element of the ultrasonic phased array, which is reflected to a receiving point on the ultrasonic phased array by the first focus according to the first receiving time and the ultrasonic wave transmitting time of the central array element of the ultrasonic phased array;
determining the measurement depth information of the first focus according to the first transmission time and the original transmission time corresponding to the first focus; the original transit time is used to indicate the transit time of the first focal point reflecting ultrasound without loss.
In summary, when the electrode end face is detected, for any target focus of the electrode end face, the distance between the target focus of the electrode end face and the central position of the ultrasonic phased array and the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array are obtained first, a triangle formed by the target focus, the central position of the ultrasonic phased array and any array element in each array element is constructed, and therefore the acoustic path information of any array element in each array element and the target focus is determined, and the ultrasonic wave sending time corresponding to each array element is determined according to the acoustic path information corresponding to each array element, so that the ultrasonic wave sent by each array element is focused at the target focus. The image information of the clicked end face can be obtained by carrying out data processing on the ultrasonic reflection signals focused at the focuses, so that the monitoring of the electrode end face is realized, and the control precision of the temperature and the chemical reaction in the submerged arc furnace is improved.
FIG. 7 illustrates a block diagram of a computer device 700, shown in an exemplary embodiment of the present application. The computer device may be implemented as a server in the above-mentioned aspects of the present application. The computer device 700 includes a Central Processing Unit (CPU) 701, a system Memory 704 including a Random Access Memory (RAM) 702 and a Read-Only Memory (ROM) 703, and a system bus 705 connecting the system Memory 704 and the CPU 701. The computer device 700 also includes a mass storage device 706 for storing an operating system 709, application programs 710, and other program modules 711.
The mass storage device 706 is connected to the central processing unit 701 through a mass storage controller (not shown) connected to the system bus 705. The mass storage device 706 and its associated computer-readable media provide non-volatile storage for the computer device 700. That is, the mass storage device 706 may include a computer-readable medium (not shown) such as a hard disk or Compact Disc-Only Memory (CD-ROM) drive.
Without loss of generality, the computer-readable media may comprise computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), flash Memory or other solid state Memory technology, CD-ROM, Digital Versatile Disks (DVD), or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage, or other magnetic storage devices. Of course, those skilled in the art will appreciate that the computer storage media is not limited to the foregoing. The system memory 704 and mass storage device 706 described above may be collectively referred to as memory.
The computer device 700 may also operate as a remote computer connected to a network via a network, such as the internet, in accordance with various embodiments of the present disclosure. That is, the computer device 700 may be connected to the network 708 through the network interface unit 707 connected to the system bus 705, or the network interface unit 707 may be used to connect to other types of networks or remote computer systems (not shown).
The memory further includes at least one computer program, the at least one computer program is stored in the memory, and the central processing unit 701 implements all or part of the steps of the methods shown in the above embodiments by executing the at least one computer program.
In an exemplary embodiment, a computer readable storage medium is also provided for storing at least one computer program, which is loaded and executed by a processor to implement all or part of the steps of the above method. For example, the computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CD-ROM), a magnetic tape, a floppy disk, an optical data storage device, and the like.
In an exemplary embodiment, a computer program product or a computer program is also provided, which comprises computer instructions, which are stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions to cause the computer device to perform all or part of the steps of the method described in any of the embodiments of fig. 2 or fig. 3.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A method of imaging an end face of an electrode, the method being used in a data processor in an ultrasonic inspection system; the ultrasonic detection system comprises the data processor, an ultrasonic phased array and a main control machine; the main control machine is used for controlling each array element in the ultrasonic phased array to transmit ultrasonic waves; the method comprises the following steps:
acquiring a target focus distance; the target focus distance is used for indicating the distance between a target focus of the electrode end face and the center position of the ultrasonic phased array;
determining sound path information corresponding to each array element according to the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the target focus distance; the acoustic path information is used for indicating the distance of the ultrasonic wave emitted by the array element to reach the target focus;
determining the ultrasonic wave sending time corresponding to each array element according to the sound path information corresponding to each array element, so that the main control computer indicates the ultrasonic waves emitted by each array element according to the ultrasonic wave sending time corresponding to each array element, and focuses the ultrasonic waves at the target focus;
and carrying out data processing on electric signals corresponding to the ultrasonic reflection signals reflected by the focuses of the electrode end face, which are received in sequence, so as to obtain image information of the electrode end face.
2. The method according to claim 1, wherein the determining, according to the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the target focus distance, the sound path information corresponding to each array element comprises:
determining the distance between a target focus and the center position of the ultrasonic phased array in a first axial direction and the distance between the target focus and the ultrasonic phased array in a second axial direction according to the included angle between the target focus line segment and the ultrasonic phased array and the target focus distance; the target focus line segment is a connection line of the target focus and a midpoint of the ultrasonic phased array; the first axis is parallel to the ultrasound phased array plane; the second axial direction is perpendicular to the ultrasonic phased array plane;
performing difference processing on the distance between the target focus and the center position of the ultrasonic phased array in the first axial direction and the distance between each array element and the center position of the ultrasonic phased array, and determining the distance between each array element and the target focus in the first axial direction;
and determining the distance between each array element and the target focus according to the distance between each array element and the target focus in the first axial direction and the distance between the target focus and the ultrasonic phased array in the second axial direction, and acquiring the sound path information corresponding to each array element.
3. The method of claim 2, wherein determining the distance between the target focus and the center position of the ultrasonic phased array in the first axis and the distance between the target focus and the ultrasonic phased array in the second axis according to the angle between the target focus line segment and the ultrasonic phased array and the target focus distance comprises:
acquiring a sine value of an included angle between a target focus line segment and the ultrasonic phased array and a product of the target focus distance, and taking the product as a distance between the target focus and the center position of the ultrasonic phased array in a first axial direction;
and acquiring a cosine value of an included angle between a target focus line segment and the ultrasonic phased array and a product between the target focus distances, and taking the product as the distance between the target focus and the ultrasonic phased array in the second axial direction.
4. The method according to any one of claims 1 to 3, wherein the determining the ultrasonic wave transmission time corresponding to each array element according to the acoustic path information corresponding to each array element comprises:
acquiring the sound path information corresponding to each array element and the sound path difference between the sound path information and the target focus distance;
determining the sending time difference of each array element and the array element at the central position of the ultrasonic phased array according to the sound path difference value;
and determining the ultrasonic wave sending time corresponding to each array element according to the sending time difference between each array element and the array element at the central position of the ultrasonic phased array and the sending time of the array element at the central position of the ultrasonic phased array.
5. The method of claim 4, further comprising:
and determining the ultrasonic wave transmitting sequence of each array element according to the transmitting time difference between each array element and the array element at the central position of the ultrasonic phased array so as to control each array element of the ultrasonic phased array to transmit the ultrasonic wave according to the ultrasonic wave transmitting sequence.
6. The method according to any one of claims 1 to 3, wherein the performing data processing on the sequentially received ultrasonic reflection signals reflected by the respective focus points of the electrode end surface to obtain image information of the electrode end surface comprises:
carrying out data processing on ultrasonic reflection signals reflected by all focuses of the electrode end face, which are received in sequence, so as to obtain measurement depth information of all focuses on the electrode end face;
and constructing image information of the electrode end face according to the measurement depth information of each focus on the electrode end face.
7. The method according to claim 6, wherein the performing data processing on the sequentially received ultrasonic reflection signals reflected by the respective focus points of the electrode end surface to obtain the measurement depth information of the respective focus points on the electrode end surface comprises:
acquiring a first receiving moment when a receiving point of the ultrasonic phased array receives an ultrasonic wave reflected signal reflected by a first focus;
determining a first transmission time of the ultrasonic wave transmitted by the central array element of the ultrasonic phased array, which is reflected to a receiving point on the ultrasonic phased array by the first focus according to the first receiving time and the ultrasonic wave transmitting time of the central array element of the ultrasonic phased array;
determining the measurement depth information of the first focus according to the first transmission time and the original transmission time corresponding to the first focus; the original transit time is used to indicate the transit time of the first focal point reflecting ultrasound without loss.
8. An imaging device for an electrode end face, the device comprising:
the target distance acquisition module is used for acquiring a target focus distance; the target focal point distance is used for indicating the distance between the target focal point of the electrode end face and the central position of the ultrasonic phased array;
the sound path information acquisition module is used for determining sound path information corresponding to each array element according to the distance between each array element in the ultrasonic phased array and the central position of the ultrasonic phased array and the target focus distance; the acoustic path information is used for indicating the distance of the ultrasonic wave emitted by the array element to reach the target focus;
a sending time determining module, configured to determine, according to the acoustic path information corresponding to each array element, an ultrasonic sending time corresponding to each array element, so that the master control indicates, according to the ultrasonic sending time corresponding to each array element, an ultrasonic wave emitted by each array element to be focused at the target focus;
and the signal processing module is used for carrying out data processing on the ultrasonic reflection signals reflected by the focuses of the electrode end faces received in sequence to obtain image information of the electrode end faces.
9. A computer device comprising a processor and a memory, the memory having stored therein at least one instruction that is loaded and executed by the processor to implement the method of imaging an electrode end face of any of claims 1 to 7.
10. A computer readable storage medium having stored therein at least one instruction, which is loaded and executed by a processor, to implement the method of imaging an electrode end face as claimed in any one of claims 1 to 7.
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