CN210301047U

CN210301047U - Power supply circuit and ultrasonic apparatus using the same

Info

Publication number: CN210301047U
Application number: CN201920679989.1U
Authority: CN
Inventors: 葛高峰; 张正毅
Original assignee: GE Precision Healthcare LLC
Current assignee: GE Precision Healthcare LLC
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-04-14
Anticipated expiration: 2029-05-13

Abstract

The utility model provides a power supply circuit, it includes: a voltage generation module for outputting a first voltage; and each voltage reduction module is used for receiving the first voltage and reducing the first voltage to output reduced voltage. Another aspect of the utility model provides an ultrasonic equipment that has used this supply circuit. The utility model provides a supply circuit and ultrasonic equipment have reduced the volume of circuit, can adapt to the voltage demand of different mode and different probes moreover.

Description

Power supply circuit and ultrasonic apparatus using the same

Technical Field

The utility model relates to a power supply circuit especially relates to a power supply circuit in ultrasonic equipment.

Background

An ultrasonic wave transmitting circuit in the ultrasonic equipment is used for transmitting ultrasonic waves, a piezoelectric transducer in the ultrasonic wave transmitting circuit needs to be driven by higher voltage, and the voltage requirements under different modes are different. For example, in the B mode, the voltage of the ultrasonic wave transmitting circuit needs to be 85V, and in the doppler mode, the voltage of the ultrasonic wave transmitting circuit needs to be 70V, and in addition, there is a need for multiple voltage supplies in some application scenarios, such as 70V, 35V, to drive the piezoelectric transducer.

In the prior art, the power supply circuit is respectively provided with multiple paths of corresponding high-voltage generating circuits for different levels, so that the size of the circuit board can be increased, and the power consumption is increased. When the high-voltage generating circuit leaves the factory, the amplitude of each voltage is fixed, and the high-voltage generating circuit cannot be adapted to different working modes, and cannot be further accurately controlled, so that the accuracy of a subsequent ultrasonic circuit is influenced.

Therefore, it is necessary to design a new power supply circuit and an ultrasonic apparatus using the same to reduce the size of the circuit board and to precisely control the power supply voltages of the circuits.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power supply circuit, its characterized in that, it includes: a voltage generation module for outputting a first voltage; and each voltage reduction module is used for receiving the first voltage and reducing the first voltage to output reduced voltage.

Preferably, the voltage control module is further configured to send a first control signal to the voltage generation module to control the amplitude of the first voltage output by the voltage generation module.

Preferably, the voltage control module is configured to send a second control signal to the voltage-reducing module to control the amplitude of the reduced voltage output by the voltage-reducing module.

Preferably, the voltage control module is configured to receive a voltage switching signal and send at least one of the first control signal and the second control signal according to the received voltage switching signal.

Preferably, the at least one voltage-reducing module includes a first voltage-reducing module and a second voltage-reducing module, both of which are configured to receive the first voltage, the first voltage-reducing module is configured to reduce the first voltage and then output a first reduced voltage, and the second voltage-reducing module is configured to reduce the first voltage and then output a second reduced voltage.

The utility model also provides an ultrasonic device, which is characterized in that the device comprises a power supply circuit, a level conversion circuit and an ultrasonic transducer, the power supply circuit is electrically connected with the level conversion circuit, the level conversion circuit is electrically connected with the ultrasonic transducer,

preferably, the power supply circuit includes: the voltage generation module is used for outputting a first voltage to the level conversion circuit; and each voltage reduction module is used for receiving the first voltage and reducing the first voltage so as to output a reduced voltage to the level conversion circuit.

Preferably, the first voltage is input to a power supply terminal of the level shift circuit, and the step-down voltage is input to a reference level terminal of the level shift circuit.

Preferably, the at least one voltage-reducing module includes a first voltage-reducing module and a second voltage-reducing module, the first voltage-reducing module and the second voltage-reducing module are both configured to receive the first voltage, the first voltage-reducing module is configured to reduce the first voltage and then output a first reduced voltage, the second voltage-reducing module is configured to reduce the first voltage and then output a second reduced voltage, the first voltage is input to the power supply terminal of the level conversion circuit, and the first reduced voltage and the second reduced voltage are respectively input to the reference level terminal of the level conversion circuit.

Preferably, the voltage control system further comprises a main control module, the main control module sends a voltage switching signal to the voltage control module, and the voltage control module sends at least one of the first control signal and the second control signal according to the received voltage switching signal.

Other features and aspects will become apparent from the following detailed description, the accompanying drawings, and the claims.

Drawings

The invention may be better understood by describing exemplary embodiments thereof in conjunction with the following drawings, in which:

fig. 1 is a block diagram of an embodiment of a power supply circuit according to the present invention;

fig. 2 is a block diagram of another embodiment of the power supply circuit of the present invention;

FIG. 3 is a block diagram of one embodiment of an ultrasound device of the present invention;

fig. 4 is a block diagram of another embodiment of the power supply circuit of the present invention;

FIG. 5 is a block diagram of another embodiment of the ultrasound device of the present invention;

Detailed Description

In the following description of the embodiments of the present invention, it is noted that in the detailed description of the embodiments, all the features of the actual embodiments may not be described in detail in order to make the description concise and concise. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions are made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be further appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another.

Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalent, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, nor are they restricted to direct or indirect connections.

Fig. 1 is a block diagram of an embodiment of a power supply circuit according to the present invention. The power supply circuit 100 includes a voltage generation module 101 and a voltage reduction module 102. The voltage generation module 101 is connected to a DC voltage, which is usually obtained by converting the commercial power through an AC/DC power module, or may be provided by a battery, and in some embodiments, the amplitude of the DC voltage is 12V. The voltage generation module 101 includes a DC/DC conversion circuit through which the direct current voltage outputs the first voltage V1 at the high voltage output terminal 11. The first voltage V1 is a high voltage, such as 85V, 70V, etc., generally used as a supply voltage for subsequent circuits. Above-mentioned specific voltage amplitude is exemplary illustration only, and in practical application the utility model discloses a technical scheme during, can set for specific voltage amplitude according to actual need.

The voltage-reducing module 102 includes a voltage-reducing module input end 13 and a voltage-reducing module output end 14, the voltage-reducing module input end 13 is electrically connected to the voltage generating module 101 and receives the first voltage V1, the first voltage V1 is reduced by the voltage-reducing module, and a reduced voltage V2 is output at the voltage-reducing output end 14, and the reduced voltage V2 is usually ± 70V, ± 60V, etc., and is generally used as a reference voltage of a subsequent circuit. Those skilled in the art know that the amplitude of the voltage is only exemplary, and in practical application of the technical solution of the present invention, the specific voltage value can be adjusted according to actual needs. The voltage reduction module 102 may be implemented in various ways, including but not limited to, using a buck diode or a low dropout regulator (LDO), etc., and those skilled in the art will recognize that any voltage reduction module capable of achieving voltage reduction is within the scope of the present invention. Preferably, in some embodiments, the power supply circuit 100 includes a plurality of voltage dropping modules 102, each of which receives the first voltage V1 and drops it to output a different voltage magnitude. Further, the step-down voltage V2 serves as a reference voltage of a subsequent circuit, and the voltage difference between the first voltage V1 and the step-down voltage V2 is a constant value, for example, 15V.

Preferably, as shown in fig. 2, the present invention provides a power supply circuit 200 according to another embodiment, the power supply circuit 200 includes a voltage control module 203, and the voltage control module 203 sends a first control signal S1 to the voltage generation module 101 to control the amplitude of the first voltage V1. Preferably, the first control signal S1 may be a control signal for enabling the voltage generation module, or may be a control signal for controlling the amplitude of the output voltage of the voltage generation module. Preferably, the voltage control module 102 may further send a second control signal S2 to the voltage-reducing module to control the amplitude of the reduced voltage V2 output by the voltage-reducing module 102, and the second control signal S2 may also be a control signal of voltage amplitude to control the voltage-reducing module to reduce the first voltage V1 and output the reduced voltage V2 with the target amplitude. The voltage control module 203 may send the first control signal S1 and the second control signal S2 simultaneously or only one of them according to the requirements of different application scenarios. Those skilled in the art will appreciate that the voltage control module 203 may employ any of a variety of existing controllers including, but not limited to, an FPGA, a DSP, an MCU, etc. Meanwhile, the voltage control module 203 has various specific forms of control circuits for the voltage generation module 101 or the voltage reduction module 102. In one embodiment, the voltage control module 203 sends an analog signal with a certain amplitude to the voltage generation module 101 through a digital-to-analog converter (DAC), the analog signal serves as the first control signal S1, and since the DC/DC conversion circuit of the voltage generation module 101 adopts feedback control, the first control signal S1 is sent to the reference input terminal of the comparator functioning as feedback, the voltage control module 203 can control the amplitude of the first voltage V1 output by the voltage generation module 101 through controlling the digital-to-analog converter (DAC). The voltage control module 203 sends the second control signal S2 to the voltage-decreasing module 102, and the control method thereof also adopts a similar design, which is not described herein again. By adopting the design, the accuracy of the power supply voltage and the reference voltage of the subsequent circuit can be ensured, the performance of the subsequent circuit can be improved, and meanwhile, when the subsequent level changes, such as the aging of the device or the influence of the external electromagnetic environment, the voltage control module 203 can pertinently control the proper compensation of the amplitudes of the first voltage V1 and the reduced voltage V2.

Referring to fig. 3, the ultrasonic apparatus 300 shown in fig. 3 includes a power supply circuit 100, a level conversion circuit 310, and an ultrasonic transducer 320. The power supply circuit 100 is electrically connected to the level conversion circuit 310 to supply power and provide a reference voltage, the level conversion circuit 310 is electrically connected to the ultrasonic transducer 320 located in the probe, usually through a cable, when the ultrasonic device 300 needs to transmit an ultrasonic pulse with a certain frequency, the power supply circuit 100 provides a first voltage V1 and a step-down voltage V2, the first voltage V1 is input to the power supply terminal of the level conversion circuit 310 to provide a power supply voltage, the step-down voltage V2 is input to the reference level terminal of the level conversion circuit 310 to provide an analog reference voltage, the level conversion circuit 310 is configured to receive and amplify an ultrasonic pulse electrical signal, the amplified electrical signal is transmitted to the ultrasonic transducer 320, and the ultrasonic transducer 320 converts the amplified electrical signal into an ultrasonic wave. In some embodiments, the level shift circuit requires 85V, the ultrasound board transmitting part circuit requires 70V in B mode, and the ultrasound board transmitting part circuit requires 35V in Doppler mode. The utility model discloses a design can be to the mode of operation of difference, and the voltage amplitude of control output satisfies the mode of operation's of different grade type needs.

Preferably, fig. 4 is a block diagram of another embodiment of the power supply circuit of the present invention. The power supply circuit 400 includes a voltage generation module 401, a first voltage reduction module 403, and a second voltage reduction module 404. The high voltage output end 44 of the voltage generation module 401 outputs a first voltage V1, the first voltage reduction module 403 and the second voltage reduction module 404 are both connected to the high voltage output end 44 and receive the first voltage V1, the first voltage reduction module 403 reduces the first voltage V1 and outputs a first reduced voltage V3, and the second voltage reduction module 404 reduces the first voltage V1 and outputs a second reduced voltage V4. It is emphasized that in other embodiments, more voltage reduction modules may be connected to the power supply circuit to output different voltages. Because including the transformer subassembly in the voltage generation module, it is great usually to have a large volume, the utility model discloses a design has utilized the high-voltage signal that single voltage generation module produced, produces two tunnel even multichannel voltages, has reduced the whole volume of circuit board, has enlarged this supply circuit's application scope.

Referring to fig. 5, fig. 5 is a block diagram of an ultrasound apparatus 500 according to an embodiment of the present invention, where the ultrasound apparatus 500 includes a power supply circuit 400, a level conversion circuit 510, an ultrasound transducer 520, and a main control module 530. In one embodiment, the main control module 530 includes a probe detection module, the ultrasonic transducers 520 are disposed inside the probe, and the reference voltages required by the ultrasonic transducers 520 of different types of probes are different, for example, the reference voltages are ± 70V and 0V for a three-level probe, and the reference voltages are ± 70V, ± 35V and 0V for a five-level probe. When the three-level probe is replaced with the five-level probe, the probe detection module detects the change of the type of the probe, and the main control module 530 transmits a voltage switching signal S530 to the power supply circuit 400 according to the detected type of the probe. Referring to fig. 4 again, the voltage control module in the power supply circuit 400 sends a first control signal S3 to the voltage generation module according to the voltage switching signal S530, controls the voltage generation module 401 to generate a first voltage V1 of ± 85V, sends a second control signal S4 to the first voltage reduction module 403, controls the first voltage reduction module 403 to reduce the first voltage, and outputs a second voltage V3 with an amplitude of ± 70V, and sends a third control signal S5 to the second voltage reduction module 404, controls the second voltage reduction module 404 to reduce the first voltage, and outputs a first reduced voltage V4 with an amplitude of ± 35V, the first voltage V1 supplies power to the level conversion circuit 510, and the first reduced voltage V3 and the second reduced voltage V4 are respectively connected to the reference level terminals of the level conversion circuit, so as to provide different reference levels for the level conversion circuit to ensure its normal operation. The utility model discloses a power supply circuit's design can be according to subsequent probe type, and the reference level of automatic change output has solved the adaptation problem of different probes, has still reduced the circuit board volume simultaneously. When the probe is unplugged, the main control module can also send an enable signal to close the power supply circuit in consideration of power saving so as to reduce standby power consumption.

Some exemplary embodiments have been described above. Nevertheless, it will be understood that various modifications may be made. For example, suitable results may be achieved if the described techniques are performed in a different order and/or if components in the described systems, architectures, devices, or circuits are combined in a different manner and/or replaced or supplemented by additional components or their equivalents. Accordingly, other embodiments are within the scope of the following claims.

Claims

1. A power supply circuit, comprising:

the voltage generation module is used for outputting a first voltage; and

and each voltage reduction module is used for receiving the first voltage and reducing the first voltage to output reduced voltage.

2. The power supply circuit of claim 1, further comprising a voltage control module configured to send a first control signal to the voltage generation module to control the magnitude of the first voltage output by the voltage generation module.

3. The power supply circuit of claim 2, wherein the voltage control module is configured to send a second control signal to the voltage reduction module to control the magnitude of the reduced voltage output by the voltage reduction module.

4. The power supply circuit of claim 3 wherein the voltage control module is configured to receive a voltage switching signal and to send at least one of the first control signal and the second control signal based on the received voltage switching signal.

5. The power supply circuit according to any one of claims 1 to 4, wherein the at least one voltage-reducing module includes a first voltage-reducing module and a second voltage-reducing module, the first voltage-reducing module and the second voltage-reducing module are both configured to receive the first voltage, the first voltage-reducing module is configured to reduce the first voltage and output a first reduced voltage, and the second voltage-reducing module is configured to reduce the first voltage and output a second reduced voltage.

6. An ultrasonic apparatus, comprising a power supply circuit, a level shift circuit, and an ultrasonic transducer, wherein the power supply circuit is electrically connected to the level shift circuit, the level shift circuit is electrically connected to the ultrasonic transducer,

the power supply circuit includes: the voltage generation module is used for outputting a first voltage to the level conversion circuit; and each voltage reduction module is used for receiving the first voltage and reducing the first voltage so as to output a reduced voltage to the level conversion circuit.

7. The ultrasound device of claim 6, wherein the first voltage is input to a supply terminal of the level shift circuit and the buck voltage is input to a reference level terminal of the level shift circuit.

8. The ultrasound device of claim 6, further comprising a voltage control module for sending a first control signal to the voltage generation module to control the magnitude of the first voltage output by the voltage generation module.

9. The ultrasound device of claim 8, wherein the voltage control module is configured to send a second control signal to the voltage reduction module to control the magnitude of the reduced voltage output by the voltage reduction module.

10. The ultrasound device according to claim 6, wherein the at least one voltage-reducing module includes a first voltage-reducing module and a second voltage-reducing module, the first voltage-reducing module and the second voltage-reducing module are both configured to receive the first voltage, the first voltage-reducing module is configured to reduce the first voltage and output a first reduced voltage, the second voltage-reducing module is configured to reduce the first voltage and output a second reduced voltage, the first voltage is input to the power supply terminal of the level conversion circuit, and the first reduced voltage and the second reduced voltage are respectively input to the reference level terminal of the level conversion circuit.

11. The ultrasound device of any of claims 9 to 10, further comprising a master control module, the master control module sending a voltage switching signal to the voltage control module, the voltage control module sending at least one of the first control signal and the second control signal based on the received voltage switching signal.