Bladder capacity three-dimensional measuring probe
By using electronic arrays to replace mechanical transmission structures in the three-dimensional bladder capacity measurement probe, the problems of low frame rates and low measurement accuracy in traditional probes are solved, and higher measurement accuracy and faster scanning speed are achieved, while reducing noise and power consumption.
Patent Information
- Application Number
- CN202411472027.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-02-14
AI Technical Summary
Due to the mechanical transmission structure of the traditional bladder capacity three-dimensional measurement probe, it has problems such as swing and vibration, short service life, slow scanning speed, low frame rate, high mechanical noise, and high power consumption.
An electronic array is used to replace the traditional mechanical transmission structure and ultrasonic transducer. The electronic array is driven to rotate by a lower rotating motor to obtain multiple sections of the bladder.
It solves the problems of too slow frame rates and low measurement accuracy, improves the measurement accuracy of bladder capacity, reduces mechanical noise and power consumption, extends service life, and improves scanning speed.
Smart Images
Figure CN119423841A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of bladder capacity measuring mechanisms, in particular to a three-dimensional bladder capacity measuring probe. Background Art
[0002] The bladder capacity measuring instruments currently on the market use a three-dimensional bladder capacity measurement probe that contains two stepper motors. An upper motor drives the ultrasonic transducer to swing through a mechanical transmission structure, and a lower motor 2 drives the upper motor to rotate. The upper motor is responsible for swinging the ultrasonic transducer back and forth about 120° to form a single scanning section, which can obtain a section image of the bladder. The lower motor 2 is responsible for rotating 0~165°, driving the upper motor to rotate, pausing every 15°, waiting for the upper motor to drive the ultrasonic transducer to swing for a cycle, and then rotating again. In this way, when the lower motor 2 rotates at an angle of 0°, 15°, ..., 165°, there will be a scanning section, and the bladder will be averaged into 12 sections. After three-dimensional modeling, the capacity of the bladder can be calculated to obtain the urine volume and determine whether the patient needs to urinate.
[0003] However, when such an upper motor drives the ultrasonic transducer to swing through a mechanical transmission structure, there will be disadvantages such as swinging vibration, short service life, slow scanning speed resulting in low frame rate, easy mechanical noise, and high power consumption. Summary of the invention
[0004] In order to solve the above technical problems, the present invention provides a three-dimensional bladder capacity measurement probe, which removes the upper motor, mechanical transmission structure and ultrasonic transducer of the traditional three-dimensional bladder capacity measurement probe and replaces them with an electronic array, that is, multiple single array elements are deployed on an arc-shaped fan, and then the entire electronic array fan is driven to rotate by a lower rotating motor to obtain multiple sections of the bladder.
[0005] To achieve the above object, the present invention adopts the following technical solution: A three-dimensional bladder capacity measurement probe mainly consists of an acoustic head, a control circuit, a bottom motor and an oil pipe. The lower motor is connected to the acoustic head to drive the rotation of the electronic array inside the acoustic head. The oil pipe is connected to the inner cavity of the acoustic head. The control circuit is electrically connected to the electronic array and the lower motor. The acoustic head is composed of an electronic array and a sound-transmitting cover, and the acoustic head contains oil; the electronic array is composed of a plurality of single array elements arranged on an arc-shaped sector, and the sound-transmitting cover covers the outside of the sector; The lower motor drives the electronic array to rotate gradually; The control circuit comprises a channel control unit, a transmitting and receiving unit, a motor control unit and a power supply; the channel control unit selects the transmitting and receiving channels; the transmitting and receiving unit is a channel for transmitting ultrasound and receiving ultrasound echo reflections; the motor control unit controls the rotation and pause of the lower motor; and the power supply provides high-voltage working power and control power.
[0006] Furthermore, the electronic array has 31 electronic array elements in total, which are evenly distributed on a 120° sector.
[0007] Furthermore, the lower motor is a stepping motor with a step angle of 3° and a step number of 59, forming 60 sections.
[0008] Furthermore, the control circuit includes a high voltage switch and a related control interface.
[0009] Furthermore, the control circuit also includes a probe code for connecting to an external ultrasound device.
[0010] The technical solution of the present invention solves the problem of slow frame rate and low measurement accuracy caused by the traditional bladder capacity three-dimensional probe having too dense sampling lines in the first dimension and too sparse sampling lines in the second dimension. This solution balances the effective utilization of the sampling line bundles in the two dimensions and further improves the bladder capacity measurement accuracy by increasing the number of sampling points.
[0011] Compared with the traditional three-dimensional bladder capacity probe, the three-dimensional bladder capacity probe of the present invention has no swinging vibration, longer service life, faster frame rate, faster measurement, less mechanical noise, and less power consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 : A schematic diagram of the structure of a probe for three-dimensional measurement of bladder capacity according to the present invention; Figure 2 : A structural cross-sectional view of a probe for three-dimensional measurement of bladder capacity according to the present invention; Figure 3 : The electronic array circuit connection logic block diagram of the present invention; Figure 4 : Schematic diagram of three-dimensional rotation of the present invention; Figure 5 : Scanning schematic diagram of the three-dimensional bladder capacity measurement probe of the present invention; Figure 6 : Schematic diagram of the control circuit of the present invention; Figure 7 : Circuit diagram of the three-dimensional measurement probe of bladder capacity of the present invention. DETAILED DESCRIPTION
[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0014] like Figure 1 and Figure 2 As shown, a three-dimensional bladder capacity measurement probe is mainly composed of a sound head 1, a control circuit 3, a lower motor 2 and an oil pipe 4. The sound head 1 is composed of an electronic array and a sound-transmitting cover. Multiple single array elements are deployed on an arc-shaped fan to form an electronic array, and the sound-transmitting cover covers the outside of the fan. The lower motor 2 is connected to the sound head 1, and the lower motor 2 drives the rotation of the electronic array inside the sound head 1. The curvature radius of the sound head 1 array is R18mm, Figure 1 R20 means that the curvature radius of the sound head 1 array is the curvature radius formed by the blind area of R18mm+2mm.
[0015] The acoustic head 1 contains oil, and the oil pipe 4 is connected to the inner cavity of the acoustic head 1 for storing excess oil inside the acoustic shell to avoid the influence of thermal expansion and contraction on the oil in the probe.
[0016] The control circuit 3 is electrically connected to the electronic array and the lower motor 2 , and includes a high-voltage switch and related control interfaces for controlling the selection of the electronic array channels inside the acoustic head 1 .
[0017] like Figure 3 As shown, the electronic array has 31 electronic array elements, which are evenly arranged on a 120° sector, with CH16 at the center. The angle between array elements is 3.87°, and the angle from array element to edge is 1.935°. The array elements pass through the reserved hole of the lower motor 2 through the signal harness, and are electrically connected to the high-voltage switch. The control chip such as external FPGA or ARM selects which array elements are connected to the high-voltage transmission / echo reception.
[0018] like Figure 4 and 5 As shown, the lower motor 2 is a stepping motor with a stepping angle of 3° and 59 steps, forming 60 sections to scan a bladder cycle.
[0019] like Figure 6 As shown, the control circuit 3 has a channel control unit, a transmitting and receiving unit, a motor control unit, and a power supply. The channel control unit selects the channel for transmitting and receiving; the transmitting and receiving unit is a channel for transmitting ultrasound and receiving ultrasound echo reflection; the motor control unit controls the rotation and pause of the lower motor 2. The power supply includes a high-voltage working power supply and a control power supply, wherein the high-voltage working power supply is 50V and the control power supply is 5V.
[0020] like Figure 7 As shown, the high-voltage switch of the control circuit 3 is a single 32-way HV2901, which is used for gating the array elements in the electronic array; the relevant control interfaces include the transmitting and receiving interface X1, the electronic array array element and the transmitting and receiving channel gating control interface X3, and the lower motor 2 control line interface X4.
[0021] One end of the transmitting and receiving interface X1 is connected to HV2901 to transmit ultrasound and receive ultrasonic echoes, and the other end is connected to the transmitting and receiving channel of the ultrasonic device outside the probe.
[0022] One end of the electronic array element and the transmitting and receiving channel selection control interface X3 is connected to HV2901 to select the elements in the electronic array and select which elements to work (connected to the transmitting and receiving), and the other end is connected to the ultrasound device outside the probe for control.
[0023] One end of the lower motor 2 control line interface X4 is connected to the lower motor 2 to control the rotation of the lower motor 2, and the other end is connected to the ultrasound device outside the probe.
[0024] Figure 7 Among them, ELE_ARRYA is an electronic array with a total of 31 elements, which is used for ultrasonic transmission and echo reception; MOTOR is the lower motor 2, which is used to drive the electronic array to rotate; PRBXH3, PRBXH2, PRBXH1, and PRBXH0 represent probe codes, which represent the probe numbers and are used for ultrasonic equipment detection, issuing corresponding control programs, and connecting to ultrasonic equipment outside the probe.
[0025] Compared with the traditional electronic convex array, the upper electronic array part of the bladder capacity three-dimensional measurement probe of the present invention can use fewer array elements. Since the traditional convex array probe needs to meet the requirements of the resolution of the detected image, visual observation effect, etc., the number of array elements is generally between 80 and 128. However, bladder capacity measurement requires the accuracy of bladder capacity measurement and the resolution of the image rather than an essential requirement. By reducing the number of array elements of the upper electronic array method of this probe and increasing the number of bladder sections, the number of bladder sections is increased from 12 to 60, which can meet the accuracy of bladder capacity measurement. The number of array elements of the motor probe array part of this probe can be 31 array elements. Compared with the traditional electronic convex array solution, the PCB area is reduced, the circuit cost is reduced, and the number of array elements is reduced, so the cost of the electronic array probe on this probe is lower than that of the traditional electronic convex array and the mechanical fan-scanning convex array probe on the traditional bladder capacity three-dimensional measurement probe, thereby improving the cost performance of the whole machine; compared with the traditional bladder capacity three-dimensional measurement probe, the entire probe has reduced power consumption, and when using batteries of the same capacity, the use time of the whole machine is increased; the vibration caused by swinging is completely eliminated; the service life is longer; the frame rate is faster; and the mechanical noise is smaller.
[0026] Compared with the traditional three-dimensional bladder capacity measurement probe, the three-dimensional bladder capacity measurement probe of the present invention increases the number of sampling points and further improves the bladder capacity measurement accuracy. The upper mechanical fan scanning probe of the traditional three-dimensional bladder capacity measurement probe has an effective scanning angle of 120°, and a scanning line is taken every 1°, with a total of 120 sampling lines. The number of electronic array elements of this probe is 31, and the scanning line of a single scanning section is changed from the original 120 to the current 31, which will cause the sampling amount to decrease in this dimension, which will theoretically affect the measurement accuracy. To solve this problem, the rotation pause angle of the lower motor 2 is reduced, and the lower motor 2 is responsible for rotating 177°, and a section is collected every 3°. In this way, when the lower motor 2 rotates at an angle of 0°, 3°, 6°, 9°, 12°, ..., 177°, there will be a scanning section, and the bladder will be averaged into 60 sections. From the 12 sections of the traditional probe to the current 60 sections, the sampling lines are greatly increased in another dimension to ensure sufficient sampling volume.
[0027] The number of bladder scan lines collected and calculated by traditional 3D bladder probe is 120*12=1440 The number of bladder scan lines collected and calculated by the current 3D probe of bladder capacity is 31*60=1860 The technical solution of the present invention solves the problem of slow frame rate and low measurement accuracy caused by the traditional bladder capacity three-dimensional probe having too dense sampling lines in the first dimension and too sparse sampling lines in the second dimension. The present solution balances the effective utilization rate of the sampling line bundles in the two dimensions. Due to the increase in the sampling volume of the present solution, the accuracy of bladder capacity measurement is improved.
[0028] The time for the upper electronic array of the bladder capacity three-dimensional measurement probe of the present invention to scan the entire sector is: 280us*31=8.68ms (280us is the time of a single scanning line), and the time for scanning the entire bladder is: 8.68ms*60=520.8ms; the time for the upper motor of the traditional bladder capacity three-dimensional measurement probe to drive the transducer to scan the entire sector is: 1.2ms*256=307ms (1.2ms is the time of a single scanning line, too fast will lead to insufficient motor driving capacity; the mechanical sector scanning probe does not use the swing line number, only 128 of the 256 lines are valid, and the blind areas on both sides must be removed, and the final angle is about 120°, that is, about 120 lines), and the time for scanning the entire bladder is: 307 ms*12=3684ms; the time for the present bladder capacity three-dimensional measurement probe to scan the entire bladder will be shorter, and the bladder capacity can be obtained more quickly.
[0029] Therefore, compared with the traditional three-dimensional bladder capacity probe, the three-dimensional bladder capacity probe of the present invention has no swinging vibration, longer service life, faster frame rate, faster measurement, less mechanical noise, and less power consumption.
[0030] like Figure 5As shown, the scanning angle of the three-dimensional bladder capacity measurement probe of the present invention remains unchanged from the scanning angle of the traditional probe at 120°, the angle of each array element is 120° / 31=3.87°, the angle between array elements is 3.87°, and the angle from the array elements on both sides to the edge is 1.935°.
Claims
1. A three-dimensional bladder capacity measurement probe, characterized in that: It is mainly composed of acoustic head, control circuit, lower motor and oil pipe. The lower motor is connected to the acoustic head to drive the rotation of the electronic array inside the acoustic head. The oil pipe is connected to the inner cavity of the acoustic head. The control circuit is electrically connected to the electronic array and the lower motor. The acoustic head is composed of an electronic array and a sound-transmitting cover, and the acoustic head contains oil; the electronic array is composed of a plurality of single array elements arranged on an arc-shaped sector, and the sound-transmitting cover covers the outside of the sector; The lower motor drives the electronic array to rotate gradually; The control circuit comprises a channel control unit, a transmitting and receiving unit, a motor control unit and a power supply; the channel control unit selects the transmitting and receiving channels; the transmitting and receiving unit is a channel for transmitting ultrasound and receiving ultrasound echo reflections; the motor control unit controls the rotation and pause of the lower motor; and the power supply provides high-voltage working power and control power.
2. A three-dimensional bladder capacity measurement probe according to claim 1, characterized in that: The electronic array has 31 electronic array elements in total, which are evenly distributed on a 120° sector.
3. A three-dimensional bladder capacity measurement probe according to claim 1, characterized in that: The lower motor is a stepping motor with a stepping angle of 3° and 59 steps, forming 60 sections.
4. A three-dimensional bladder capacity measurement probe according to claim 1, characterized in that: The control circuit includes a high voltage switch and a related control interface.
5. A three-dimensional bladder capacity measurement probe according to claim 4, characterized in that: The control circuit also includes a probe code for connecting to an external ultrasound device.