An ultrasonic aftershock reduction device, method, and ultrasonic detection equipment

Abstract

The present invention provides an ultrasonic aftershock reduction device, method and ultrasonic detection device, which relates to the technical field of ultrasonic detection. First, the controller controls the current generation module to generate a current signal matching the oscillation parameters based on the oscillation parameters of the oscillation signal of the ultrasonic probe obtained in advance; wherein, the direction of the current signal generated by the current output module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe; then the current induction module generates an induced current signal based on the preset current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe. This method reduces the aftershock generated by the ultrasonic probe, thereby improving the accuracy of distance measurement based on the ultrasonic probe.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic, and in particular to an ultrasonic aftershock reduction device, method and ultrasonic detection device. Background Art

[0002] In the prior art, the distance measurement of the parking position is usually carried out by an ultrasonic probe. During the ultrasonic ranging process, aftershocks will be generated. A longer aftershock time will result in a larger range of the minimum measurement distance of the ultrasonic wave, and the accuracy of the distance measurement of the parking position is relatively low. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an ultrasonic aftershock reduction device, method and ultrasonic detection device to reduce the aftershocks generated by the ultrasonic probe, thereby improving the accuracy of ranging based on the ultrasonic probe.

[0004] In a first aspect, an embodiment of the present invention provides an ultrasonic aftershock reduction device, which includes a controller, a current generation module, a current induction module and an ultrasonic probe connected in sequence; the controller is also connected to the ultrasonic probe; the controller is used to control the current generation module to generate a current signal matching the oscillation parameters based on the oscillation parameters of the oscillation signal of the ultrasonic probe obtained in advance; the direction of the current signal generated by the current output module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe; the current induction module is used to generate an induced current signal based on the preset current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe.

[0005] Combined with the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the current generation module includes a first switch, a second switch and a power supply; the current induction module includes a first main induction coil, a second main induction coil and a secondary induction coil; the power supply, the first switch and the first main induction coil form a first loop; the power supply, the second switch and the second main induction coil form a second loop; the controller is respectively connected to the first switch and the second switch; the oscillation parameters include the oscillation frequency; the controller is used to control the first switch and the second switch to alternately close and open according to the oscillation frequency, so as to control the first loop and the second loop to alternately conduct and cut off, and generate a current signal corresponding to the oscillation frequency.

[0006] Combined with the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, wherein the oscillation parameters further include the oscillation trend; the controller is further used to control the power supply to generate a current signal whose magnitude matches the oscillation trend.

[0007] Combined with the first possible implementation manner of the first aspect, the embodiment of the present invention provides a third possible implementation manner of the first aspect. Wherein, the current induction module further includes a secondary induction coil; the secondary induction coil is configured to generate an induction current signal based on the current signals generated by the first loop and the second loop; the induction current signal is matched with the oscillation frequency.

[0008] Combined with the first aspect, the embodiment of the present invention provides a fourth possible implementation manner of the first aspect. Wherein, the device further includes a shock reduction module; the shock reduction module is respectively connected to the controller and the ultrasonic probe; the controller is further configured to control the current generation module to stop generating the current signal after a set time when the current generation module starts to generate the current signal, and control the shock reduction module to release the remaining oscillation signal of the ultrasonic probe.

[0009] Combined with the fourth possible implementation manner of the first aspect, the embodiment of the present invention provides a fifth possible implementation manner of the first aspect. Wherein, the shock reduction module includes a variable resistor and a third switch; the variable resistor is connected to the ultrasonic probe; the controller is further configured to control the third switch to close and control the resistance value of the variable resistor to increase from small to large to release the remaining oscillation signal of the ultrasonic probe.

[0010] Combined with the fifth possible implementation manner of the first aspect, the embodiment of the present invention provides a sixth possible implementation manner of the first aspect. Wherein, the variable resistor is grounded through the third switch.

[0011] In a second aspect, the embodiment of the present invention further provides an ultrasonic shock reduction method, including: the controller controls the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance; the direction of the current signal generated by the current output module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe; the current induction module generates an induction current signal based on the preset current signal generated by the current generation module; the induction current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe.

[0012] Combined with the second aspect, the embodiment of the present invention provides a first possible implementation manner of the second aspect. Among them, the current generation module includes a first switch, a second switch, and a power supply; the current induction module includes a first main induction coil, a second main induction coil, and a secondary induction coil; the power supply, the first switch, and the first main induction coil form a first loop; the power supply, the second switch, and the second main induction coil form a second loop; the controller is respectively connected to the first switch and the second switch; the oscillation parameter includes the oscillation frequency; the step of controlling the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance includes: controlling the first switch and the second switch to alternately close and open according to the oscillation frequency to control the first loop and the second loop to alternately conduct and cut off, so as to generate a current signal corresponding to the oscillation frequency.

[0013] In the third aspect, the embodiment of the present invention further provides an ultrasonic detection device, including an ultrasonic generating device and the ultrasonic aftershock reduction device as above.

[0014] The embodiment of the present invention brings the following beneficial effects:

[0015] The present invention provides an ultrasonic aftershock reduction device, method, and ultrasonic detection device, which relate to the technical field of ultrasonic detection. First, the controller controls the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance; among them, the direction of the current signal generated by the current output module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe; then the current induction module generates an induced current signal based on the preset current signal generated by the current generation module; this induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe. This method reduces the aftershock generated by the ultrasonic probe, thereby improving the accuracy of distance measurement based on the ultrasonic probe.

[0016] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification, or will be understood by implementing the present invention. The purpose and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification, claims, and drawings.

[0017] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of an ultrasonic aftershock reduction device provided by an embodiment of the present invention;

[0020] Figure 2 Circuit diagram of an ultrasonic aftershock reduction device provided by an embodiment of the present invention;

[0021] Figure 3 Circuit diagram of an ultrasonic generating device provided by an embodiment of the present invention;

[0022] Figure 4 Structural schematic diagram of the sound wave emitted by an ultrasonic probe provided by an embodiment of the present invention;

[0023] Figure 5 Structural schematic diagram of an ultrasonic aftershock reduction method provided by an embodiment of the present invention;

[0024] Figure 6 Structural schematic diagram of an ultrasonic detection device provided by an embodiment of the present invention. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] With the development of cities, urban space is getting smaller and parking spaces are getting smaller. Whether it is automatic parking or manual parking, very precise measurement of distance is required. The most mature and effective distance measurement system currently is to use ultrasonic probes for measurement. The bottleneck of the minimum measurement distance of the ultrasonic head depends on the length of the aftershock time. The present invention is a technology for reducing aftershocks. Using reverse power-on and discharging to solve this problem. Reducing the aftershock time reduces the blind area of the ultrasonic wave and improves the minimum distance of ultrasonic ranging.

[0027] Based on this, the embodiments of the present invention provide a device, method, and ultrasonic detection device for ultrasonic aftershock reduction that can be applied to the distance measurement process during the parking of various transportation tools.

[0028] For the convenience of understanding this embodiment, first, a detailed introduction will be given to an ultrasonic aftershock reduction device disclosed in the embodiments of the present invention.

[0029] The embodiments of the present invention provide an ultrasonic aftershock reduction device. As Figure 1 shown, the ultrasonic aftershock reduction device includes a controller 100, a current generation module 102, a current induction module 104, and an ultrasonic probe 106 that are connected in sequence; the controller 100 is also connected to the ultrasonic probe 106.

[0030] During the operation of the device, the controller is used to control the current generation module to generate a current signal matching the oscillation parameters based on the oscillation parameters of the oscillation signal of the ultrasonic probe obtained in advance; the direction of the current signal generated by the current output module is opposite to the direction of the current signal that causes the oscillation of the ultrasonic probe, and the current signal matches the oscillation parameters.

[0031] For example, when it is necessary to send ultrasonic waves at a frequency of 50 kHz, the ultrasonic generating device provides a signal with a frequency of 50 kHz generated based on a constant current power supply for the ultrasonic probe, then the oscillation parameter of the ultrasonic probe is 50 kHz, and the direction of the constant current generated by the ultrasonic generating device can be set as the forward current direction. Relative to the ultrasonic generating device, the constant current power supply of the above current generation module can be regarded as a current leakage, and the direction of the current signal generated by it is opposite to the direction of the current signal generated by the constant current power supply of the ultrasonic generating device.

[0032] The current induction module is used to generate an induced current signal based on the current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe.

[0033] Among them, the current induction module acts on the ultrasonic probe the current signal generated by the current generation module, so that the ultrasonic probe generates an oscillation signal based on the current signal to cancel the oscillation signal generated by the ultrasonic probe obtained in advance.

[0034] Specifically, the current generation module can be composed of a first switch, a second switch, and a power supply; the current induction module is composed of a first main induction coil, a second main induction coil, and a secondary induction coil; the power supply, the first switch, and the first main induction coil form a first loop; the power supply, the second switch, and the second main induction coil form a second loop; the controller is respectively connected to the first switch and the second switch; among them, the oscillation parameters can include the oscillation frequency; in a specific implementation, the controller controls the first switch and the second switch to alternately close and open according to the oscillation frequency, so that the first loop and the second loop are alternately turned on and off, so as to generate a current signal corresponding to the oscillation frequency.

[0035] Among them, the oscillation parameter may further include an oscillation trend; the controller is also used to control the power supply to generate a current signal whose magnitude matches the oscillation trend. The current induction module may further include a secondary induction coil; the secondary induction coil generates an induced current signal based on the current signals generated by the first loop and the second loop; the induced current signal matches the oscillation frequency.

[0036] The ultrasonic aftershock reduction device may further include an aftershock reduction module, where the aftershock reduction module is respectively connected to the controller and the ultrasonic probe; within a period of time after the current generation module starts to generate a current signal, the controller controls the current generation module to stop generating the current signal, so as to realize that the aftershock reduction module releases the remaining oscillation signal of the ultrasonic probe.

[0037] The aftershock reduction module may include a variable resistor and a third switch; among them, the variable resistor is connected to the ultrasonic probe; the controller is also used to control the third switch to close, and control the resistance value of the variable resistor to increase from small to large, so as to release the remaining oscillation signal of the ultrasonic probe. Among them, the variable resistor is grounded through the third switch.

[0038] The present invention provides an ultrasonic aftershock reduction device, which relates to the technical field of ultrasonic detection. First, the controller controls the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance; among them, the direction of the current signal generated by the current output module is opposite to the direction of the current signal that causes the oscillation of the ultrasonic probe; then the current induction module generates an induced current signal based on the preset current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe, which reduces the aftershock generated by the ultrasonic probe, thereby improving the accuracy of distance measurement based on the ultrasonic probe.

[0039] The embodiment of the present invention also provides another ultrasonic aftershock reduction device, which is implemented on the basis of the device shown in Figure 1 and its structural schematic diagram is as shown in Figure 2 shown.

[0040] The current generation module includes a first switch L1, a second switch L2, a current leakage 202, and a power supply 204; the current induction module includes a main induction coil 206 and a secondary induction coil 208; the aftershock reduction module includes a variable resistor R1 and a third switch L3; the first switch and the second switch are respectively connected to both sides of the main induction coil of the current induction module, and the main induction coil is also connected to the first switch and the second switch through the current leakage grounded power supply. The secondary winding of the transformer is connected to the ultrasonic probe, and one end is grounded and the other end is connected to the variable resistor, and the variable resistor is grounded through the third switch.

[0041] This ultrasonic aftershock reduction device can be in Figure 3It is obtained by circuit transformation based on the ultrasonic generating device shown.

[0042] During the operation of the ultrasonic generating device, when it is necessary to send ultrasonic waves of 50 kHz, with the current source 300 providing a constant current, the first switch L1 and the second switch L2 are alternately turned on, that is, the first switch is turned on and the second switch is turned off, and vice versa, the second switch is turned on and the first switch is turned off. The switching frequency is 50 kHz. In this way, a sine wave of 50 kHz is generated on the secondary induction circuit 306 of the current induction module, that is, the ultrasonic probe 106. When stopping the transmission, the constant current power supply 3 is turned off, and at the same time, the first switch and the second switch are turned off. The ultrasonic probe slowly reduces its energy from high to low by its own aftershock. See Figure 4 The waveform transmitted by the ultrasonic device shown, that is, it is divided into two parts. In the front 400 is the normal transmission mode. After turning off the constant current source and the switch, the amplitude of the transmitted sound wave slowly decreases until it stops, as shown in 402.

[0043] When performing aftershock reduction processing on the ultrasonic probe through the above ultrasonic aftershock reduction device, it is necessary to first change the current source into a current leak, that is, change the direction of the current generated by the current source to the opposite direction; then alternately turn on the first switch and the second switch, that is, turn on the first switch and turn off the second switch, and vice versa, turn on the second switch and turn off the first switch. The switching frequency is 50 kHz. In this way, a sine wave of 50 kHz with a phase and transmission direction completely opposite to that of the transmitted wave is generated on the secondary winding of the transformer of the current induction module, that is, the ultrasonic probe. The controller continuously reduces the current leak so that the energy of the sine wave generated by the secondary winding is equivalent to the aftershock energy of the ultrasonic head and the phase is opposite. After a certain period of time, the current leak, the first switch, and the second switch are turned off. At this time, the third switch is closed, and the variable resistor changes from small to large, quickly releasing the aftershock energy of the ultrasonic head.

[0044] This method can quickly release the aftershock generated by the ultrasonic probe, thereby improving the accuracy of distance measurement based on the ultrasonic probe.

[0045] Corresponding to the above embodiments of the ultrasonic aftershock reduction device, an embodiment of the present invention provides an ultrasonic aftershock reduction method, which is applied to all the above ultrasonic aftershock reduction devices, such as Figure 5 shown, the method includes:

[0046] Step S500, the controller controls the current generation module to generate a current signal matching the oscillation parameters based on the oscillation parameters of the oscillation signal of the ultrasonic probe obtained in advance; the direction of the current signal generated by the current output module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe.

[0047] Specifically, the current generation module includes a first switch, a second switch, and a power supply; the current sensing module includes a first main induction coil, a second main induction coil, and a secondary induction coil; the power supply, the first switch, and the first main induction coil form a first loop; the power supply, the second switch, and the second main induction coil form a second loop; the controller is respectively connected to the first switch and the second switch; the oscillation parameter includes an oscillation frequency; the above step S500 can be implemented in the following manner: controlling the first switch and the second switch to alternately close and open according to the oscillation frequency, so as to control the first loop and the second loop to alternately conduct and cut off, and generate a current signal corresponding to the oscillation frequency.

[0048] Step S502, the current sensing module generates an induced current signal based on the current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe.

[0049] The ultrasonic aftershock reduction method provided by the embodiments of the present invention has the same technical features as the ultrasonic aftershock reduction device provided by the above embodiments, so it can also solve the same technical problems and achieve the same technical effects.

[0050] Corresponding to the above embodiments of the ultrasonic aftershock reduction device, the embodiments of the present invention provide an ultrasonic detection device, as Figure 6 shown, the device includes an ultrasonic generating device 600 and the above ultrasonic aftershock reduction device 602.

[0051] The ultrasonic detection device provided by the embodiments of the present invention has the same technical features as the ultrasonic aftershock reduction device provided by the above embodiments, so it can also solve the same technical problems and achieve the same technical effects.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0053] The ultrasonic aftershock reduction method and the ultrasonic detection device provided by the embodiments of the present invention have the same technical features as the ultrasonic aftershock reduction device provided by the above embodiments, so they can also solve the same technical problems and achieve the same technical effects.

[0054] In addition, in the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] If the above-mentioned functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0056] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0057] Finally, it should be noted that the above embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or make equivalent replacements for some of the technical features; and these modifications, changes, or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An ultrasonic aftershock reduction device, characterized in that, The device includes a controller, a current generation module, a current induction module, and an ultrasonic probe connected in sequence; the controller is also connected to the ultrasonic probe; The controller is configured to control the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance; the direction of the current signal generated by the current generation module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe; The current induction module is configured to generate an induced current signal based on the current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe; The current generation module includes a first switch, a second switch, and a power supply; the current induction module includes a first main induction coil, a second main induction coil, and a secondary induction coil; the power supply, the first switch, and the first main induction coil form a first loop; the power supply, the second switch, and the second main induction coil form a second loop; the controller is respectively connected to the first switch and the second switch; the oscillation parameter includes an oscillation frequency; The controller is configured to control the first switch and the second switch to alternately close and open according to the oscillation frequency, so as to control the first loop and the second loop to alternately conduct and cut off, and generate a current signal corresponding to the oscillation frequency; The oscillation parameter further includes an oscillation trend; the controller is further configured to control the power supply to generate a current signal with a magnitude matching the oscillation trend.

2. The device according to claim 1, characterized in that The current induction module further includes a secondary induction coil; the secondary induction coil is configured to generate an induced current signal based on the current signals generated by the first loop and the second loop; the induced current signal matches the oscillation frequency.

3. The device according to claim 1, characterized in that The device further includes a post-seismic reduction module; the post-seismic reduction module is respectively connected to the controller and the ultrasonic probe; The controller is further configured to control the current generation module to stop generating a current signal after a set time when the current generation module starts to generate a current signal, and control the post-seismic reduction module to release the remaining oscillation signal of the ultrasonic probe.

4. The device according to claim 3, characterized in that The post-seismic reduction module includes a variable resistor and a third switch; the variable resistor is connected to the ultrasonic probe; the controller is further configured to control the third switch to close, and control the resistance value of the variable resistor to increase from small to large, so as to release the remaining oscillation signal of the ultrasonic probe.

5. The device according to claim 4, characterized in that, The variable resistor is grounded through the third switch.

6. An ultrasonic method for reducing aftershocks, characterized in that, The method is applied to the ultrasonic post-seismic reduction device according to any one of claims 1-5, and the method includes: The controller controls the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance; the direction of the current signal generated by the current generation module is opposite to the direction of the current signal causing the oscillation of the ultrasonic probe; The current induction module generates an induced current signal based on the current signal generated by the current generation module; the induced current signal acts on the ultrasonic probe to cancel the oscillation signal of the ultrasonic probe.

7. The ultrasonic aftershock reduction method according to claim 6, wherein The current generation module includes a first switch, a second switch, and a power supply; the current induction module includes a first main induction coil, a second main induction coil, and a secondary induction coil; the power supply, the first switch, and the first main induction coil form a first loop; the power supply, the second switch, and the second main induction coil form a second loop; the controller is respectively connected to the first switch and the second switch; the oscillation parameters include the oscillation frequency. The step of controlling the current generation module to generate a current signal matching the oscillation parameter based on the oscillation parameter of the oscillation signal of the ultrasonic probe obtained in advance includes: Controlling the first switch and the second switch to alternately close and open according to the oscillation frequency to control the first loop and the second loop to alternately conduct and cut off, so as to generate a current signal corresponding to the oscillation frequency.

8. An ultrasonic detection device, characterized in that, It includes an ultrasonic generating device and the ultrasonic aftershock reduction device according to any one of claims 1-5.

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