An ultrasound diagnostic device and a method for controlling the transmission voltage of the ultrasound diagnostic device.

Abstract

This invention discloses an ultrasound diagnostic device and a method for controlling the transmission voltage of the ultrasound diagnostic device. The ultrasound diagnostic device includes a transmitting power supply, an output capacitor, a transmitting chip, a control unit, and a voltage regulation unit. The control unit determines the target transmission voltage according to the operating mode of the ultrasound diagnostic device; adjusts the transmission voltage output by the transmitting power supply to the target transmission voltage; and acquires the input voltage input to the transmitting chip in real time. When the input voltage is greater than the target transmission voltage, a discharge duration is determined based on the input voltage and the target transmission voltage. A first control signal is generated based on the discharge duration and a preset duration threshold. Under the control of the first control signal, the voltage regulation unit adjusts the discharge rate of the output capacitor to reduce the input voltage. By rapidly releasing the electrical energy stored in the output capacitor through the voltage regulation unit, the input voltage is rapidly reduced, enabling rapid switching of the operating mode of the ultrasound diagnostic device and improving the imaging quality of the ultrasound diagnostic device.

Description

Technical Field

[0001] This invention relates to the field of electronic circuit technology, and in particular to an ultrasound diagnostic device and a method for controlling the transmission voltage of the ultrasound diagnostic device. Background Technology

[0002] With the continuous development of ultrasound imaging technology, the performance of ultrasound diagnostic instruments has also been improved. In ultrasound diagnostic instruments, the transmission voltage output by the transmitting power supply is a crucial factor affecting image quality. To improve the image quality of ultrasound diagnostic instruments, the scanned area needs to continuously oscillate, that is, it needs to continuously transmit continuous pulse signals, which requires the transmitting power supply to continuously provide a large current.

[0003] In related technologies, to meet the above requirements, the output capacitor of the transmitting power supply needs to be set relatively large. However, a larger output capacitor will slow down the rate of voltage drop of the transmitting power. Since different scanning modes of ultrasound diagnostic instruments require different transmitting voltages, there can be a large adjustment range for the transmitting voltage, for example, from 80V to 20V. Therefore, when switching scanning modes, if the output voltage cannot be adjusted to the correct level in time, the scanned image may appear abnormally bright or have increased noise, thus affecting the imaging quality of the ultrasound scanner. Summary of the Invention

[0004] This invention provides an ultrasound diagnostic device and a method for controlling the transmission voltage of the ultrasound diagnostic device, in order to solve the problem in the prior art that when switching the working mode of the ultrasound diagnostic device, the voltage input to the transmission chip cannot be adjusted in time, resulting in a deterioration in the imaging quality of the ultrasound diagnostic device.

[0005] In a first aspect, embodiments of the present invention provide an ultrasound diagnostic device, comprising a transmitting power supply, an output capacitor, a transmitting chip, a control unit, and a voltage regulation unit, wherein:

[0006] The first output terminal of the control unit is electrically connected to the control terminal of the transmitting power supply, the second output terminal of the control unit is electrically connected to the control terminal of the voltage regulation unit, the input terminal of the control unit, the input terminal of the voltage regulation unit and the output terminal of the transmitting power supply are all electrically connected to the input terminal of the transmitting chip, and the output terminal of the transmitting power supply is also electrically connected to the output capacitor.

[0007] The control unit is used to determine the target emission voltage according to the working mode of the ultrasound diagnostic equipment; adjust the emission voltage output by the emission power supply to the target emission voltage; and acquire the input voltage input to the emission chip in real time. When the input voltage is detected to be greater than the target emission voltage, the control unit determines the discharge duration according to the input voltage and the target emission voltage, and generates a first control signal according to the relationship between the discharge duration and a preset duration threshold.

[0008] The voltage regulation unit is used to adjust the discharge rate of the output capacitor under the control of the first control signal, so as to reduce the input voltage.

[0009] In one optional embodiment, the voltage regulation unit includes a first resistor, a second resistor, a first switching transistor, and a second switching transistor, wherein:

[0010] The first end of the first resistor serves as the input end of the voltage regulation unit, and the second end of the first resistor is electrically connected to one end of the second resistor and the first end of the first switching transistor, respectively.

[0011] The second terminal of the second resistor is electrically connected to the first terminal of the second switching transistor;

[0012] The control terminals of the first and second switching transistors serve together as the control terminals of the voltage regulation unit, and the second terminals of both the first and second switching transistors are grounded.

[0013] The voltage regulation unit is specifically used to: under the control of the first control signal, disconnect the first switching transistor and turn on the second switching transistor so that both the first resistor and the second resistor are working; or, under the control of the first control signal, turn on the first switching transistor and disconnect the second switching transistor so that the first resistor is working.

[0014] In one alternative implementation, the resistance value of the first resistor is greater than the resistance value of the second resistor.

[0015] In one optional implementation, the control unit is specifically used for:

[0016] Compare the input voltage with the target transmission voltage;

[0017] If the input voltage is greater than the target transmission voltage, the difference between the logarithm of the input voltage and the logarithm of the target transmission voltage is calculated, and the product of the difference and the time coefficient is used as the discharge duration.

[0018] The time coefficient is the product of the total resistance value and the capacitance value of the output capacitor, wherein the total resistance value is the sum of the resistance values ​​of the first resistor and the second resistor.

[0019] In one optional implementation, the first control signal includes a first control sub-signal for controlling the first switching transistor and a second control sub-signal for controlling the second switching transistor;

[0020] The control unit is specifically used for:

[0021] Compare the discharge duration with the preset duration threshold;

[0022] If the discharge duration is not greater than the preset duration threshold, then the level state of the first control sub-signal is set to the first level state, and the level state of the second control sub-signal is set to the second level state.

[0023] If the discharge duration is greater than the preset duration threshold, the level state of the first control sub-signal is set to the first level state, and the level state of the second control sub-signal is set to the second level state. When the preset duration threshold is reached, the level state of the first control sub-signal is set to the second level state, and the level state of the second control sub-signal is set to the first level state.

[0024] The first level state is used to control the switch to turn off, and the second level state is used to control the switch to turn on.

[0025] In one optional implementation, the control unit is further configured to:

[0026] When the input voltage is detected to be equal to the target transmission voltage, a second control signal is generated to control the voltage regulation unit to stop working.

[0027] In one optional implementation, the second control signal includes a third control sub-signal for controlling the first switch and a fourth control sub-signal for controlling the second switch.

[0028] The control unit is specifically used for:

[0029] The level state of the third control sub-signal is set to the first level state, and the level state of the fourth control sub-signal is set to the first level state.

[0030] In one alternative implementation, the device further includes a detection unit;

[0031] The input terminal of the detection unit is electrically connected to the input terminal of the transmitting chip, and the output terminal of the detection unit is electrically connected to the input terminal of the control unit.

[0032] The detection unit is used to detect the input voltage and transmit the detected input voltage to the control unit.

[0033] Secondly, embodiments of the present invention provide a method for controlling the transmission voltage of an ultrasound diagnostic device, the ultrasound diagnostic device including a transmission power supply, an output capacitor, a transmission chip, a control unit, and a voltage regulation unit, the method comprising:

[0034] The target transmission voltage is determined according to the working mode of the ultrasound diagnostic equipment, and the transmission voltage output by the transmission power supply is adjusted to the target transmission voltage, and the input voltage input to the transmission chip is acquired in real time;

[0035] When the input voltage is detected to be greater than the target transmission voltage, the discharge duration is determined based on the input voltage and the target transmission voltage;

[0036] Based on the relationship between the discharge duration and the preset duration threshold, a first control signal is generated;

[0037] Under the control of the first control signal, the discharge rate of the output capacitor is adjusted to reduce the input voltage.

[0038] In one optional implementation, determining the discharge duration based on the input voltage and the target emission voltage includes:

[0039] Calculate the difference between the logarithm of the input voltage and the logarithm of the target transmission voltage, and multiply the difference by the time coefficient to obtain the discharge duration;

[0040] The time coefficient is the product of the total resistance value and the capacitance value of the output capacitor, wherein the total resistance value is the sum of the resistance values ​​of the first resistor and the second resistor.

[0041] In one optional implementation, the first control signal includes a first control sub-signal for controlling the first switching transistor and a second control sub-signal for controlling the second switching transistor;

[0042] The step of generating a first control signal based on the relationship between the discharge duration and a preset duration threshold includes:

[0043] Compare the discharge duration with the preset duration threshold;

[0044] If the discharge duration is not greater than the preset duration threshold, then the level state of the first control sub-signal is set to the first level state, and the level state of the second control sub-signal is set to the second level state.

[0045] If the discharge duration is greater than the preset duration threshold, the level state of the first control sub-signal is set to the first level state, and the level state of the second control sub-signal is set to the second level state. When the preset duration threshold is reached, the level state of the first control sub-signal is set to the second level state, and the level state of the second control sub-signal is set to the first level state.

[0046] The first level state is used to control the switch to turn off, and the second level state is used to control the switch to turn on.

[0047] In an optional implementation, the method further includes:

[0048] When the input voltage is detected to be equal to the target transmission voltage, a second control signal is generated to control the voltage regulation unit to stop working.

[0049] In one optional implementation, the second control signal includes a third control sub-signal for controlling the first switch and a fourth control sub-signal for controlling the second switch.

[0050] The generation of the second control signal for controlling the voltage regulation unit to stop working includes:

[0051] The level state of the third control sub-signal is set to the first level state, and the level state of the fourth control sub-signal is set to the first level state.

[0052] The technical solutions provided by the embodiments of the present invention bring at least the following beneficial effects:

[0053] In the ultrasound diagnostic device provided in this embodiment of the invention, when the ultrasound diagnostic device switches operating modes, the control unit adjusts the transmission voltage output by the transmitting power supply to the target transmission voltage determined by the operating mode of the ultrasound diagnostic device, and acquires the input voltage input to the transmitting chip in real time. When the control unit detects that the input voltage is greater than the target transmission voltage, it determines the discharge duration based on the input voltage and the target transmission voltage, and generates a first control signal for controlling the voltage adjustment unit to adjust the discharge rate of the output capacitor based on the relationship between the discharge duration and a preset duration threshold. Through the voltage adjustment unit, the electrical energy stored in the output capacitor is quickly released, thereby rapidly reducing the input voltage input to the transmitting chip to the target transmission voltage, completing the switching of operating modes, reducing the probability of abnormal brightness or increased noise in the generated image, and thus improving the imaging quality of the ultrasound diagnostic device. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a structural schematic diagram of an application scenario of an ultrasound diagnostic device provided in an embodiment of the present invention;

[0056] Figure 2 This is a schematic diagram of the structure of an ultrasound diagnostic device provided in an embodiment of the present invention;

[0057] Figure 3 This is a schematic diagram of another ultrasound diagnostic device provided in an embodiment of the present invention;

[0058] Figure 4 A schematic diagram of the circuit structure of a voltage regulation unit provided in an embodiment of the present invention;

[0059] Figure 5 This is a schematic diagram of another ultrasound diagnostic device provided in an embodiment of the present invention;

[0060] Figure 6 A schematic diagram of the discharge curve of a voltage regulation unit provided in an embodiment of the present invention;

[0061] Figure 7 A schematic diagram of the discharge curve of another voltage regulation unit provided in an embodiment of the present invention;

[0062] Figure 8 A schematic diagram of the discharge curve of another voltage regulation unit provided in an embodiment of the present invention;

[0063] Figure 9 This is a schematic diagram of another ultrasound diagnostic device provided in an embodiment of the present invention;

[0064] Figure 10 This is a schematic diagram of another ultrasound diagnostic device provided in an embodiment of the present invention;

[0065] Figure 11 This is a flowchart illustrating a method for controlling the transmission voltage of an ultrasound diagnostic device according to an embodiment of the present invention.

[0066] Figure 12 This is a complete flowchart illustrating a method for controlling the transmission voltage of an ultrasound diagnostic device, as provided in an embodiment of the present invention. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0068] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0069] This invention provides an ultrasound diagnostic device and a method for controlling the transmission voltage of the ultrasound diagnostic device. By using a voltage regulation unit, the electrical energy stored in the output capacitor is quickly released, thereby rapidly reducing the input voltage to the transmission chip to the target transmission voltage, completing the switching of the working mode, reducing the probability of abnormal brightness or increased noise in the generated image, and thus improving the imaging quality of the ultrasound diagnostic device.

[0070] The objectives, functional features, and advantages of this invention will be further explained in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the invention.

[0071] The ultrasound diagnostic equipment provided in this invention can be applied in medical ultrasound diagnostic scenarios. Figure 1 This invention illustrates a structural schematic diagram of an application scenario for an ultrasound diagnostic device provided by an embodiment of the present invention, such as... Figure 1 As shown, this application scenario includes user 10 and ultrasound diagnostic equipment 20.

[0072] In a specific implementation, user 10 selects the desired working mode on the user interface of ultrasound diagnostic device 20 so that ultrasound diagnostic device 20 can work in the selected working mode.

[0073] Optionally, the ultrasound diagnostic device can be an ultrasound diagnostic instrument.

[0074] Of course, the methods provided in the embodiments of the present invention are not limited to... Figure 1 The application scenarios shown can also be used in other possible scenarios, and the embodiments of the present invention do not impose limitations. Figure 1 The functions that each part of the application scenario shown can achieve will be described in subsequent embodiments, and will not be elaborated on here.

[0075] The ultrasound diagnostic device 20 provided in the above application scenario will be described below with reference to specific embodiments:

[0076] Figure 2 A schematic diagram of the structure of an ultrasound diagnostic device is shown, such as... Figure 2 As shown, the ultrasound diagnostic device 20 includes a transmitting power supply 201, an output capacitor Cout, a transmitting chip 202, a control unit 203, and a voltage regulation unit 204, wherein:

[0077] The first output terminal of the control unit 203 is electrically connected to the control terminal of the transmitting power supply 201, the second output terminal of the control unit 203 is electrically connected to the control terminal of the voltage regulation unit 204, the input terminal of the control unit 203, the input terminal of the voltage regulation unit 204 and the output terminal of the transmitting power supply 201 are all electrically connected to the input terminal of the transmitting chip 202, and the output terminal of the transmitting power supply 201 is also electrically connected to the output capacitor Cout.

[0078] The control unit 203 is used to determine the target transmission voltage according to the working mode of the ultrasound diagnostic device 20; adjust the transmission voltage output by the transmission power supply 201 to the target transmission voltage; and acquire the input voltage input to the transmission chip 202 in real time. When the input voltage is detected to be greater than the target transmission voltage, the control unit determines the discharge duration according to the input voltage and the target transmission voltage, and generates a first control signal according to the relationship between the discharge duration and the preset duration threshold.

[0079] The voltage regulation unit 204 is used to adjust the discharge rate of the output capacitor Cout under the control of the first control signal, so as to reduce the input voltage.

[0080] Optionally, the output capacitor Cout is a capacitor with a large capacitance value, and the first terminal of the output capacitor Cout is electrically connected to the output terminal of the transmitting power supply 201, while the second terminal of the output capacitor Cout is grounded.

[0081] It should be noted that the preset duration threshold in the embodiments of the present invention is an empirical value. For example, the preset duration threshold can be set to 0.15s.

[0082] In the ultrasound diagnostic device 20 provided in this embodiment of the invention, when the ultrasound diagnostic device 20 switches its working mode, the control unit 203 adjusts the transmission voltage output by the transmitting power supply 201 to the target transmission voltage determined by the working mode of the ultrasound diagnostic device 20, and acquires the input voltage input to the transmitting chip 202 in real time. When the control unit 203 detects that the input voltage is greater than the target transmission voltage, it determines the discharge duration based on the input voltage and the target transmission voltage, and generates a first control signal for controlling the voltage adjustment unit 204 to adjust the discharge rate of the output capacitor based on the relationship between the discharge duration and the preset duration threshold. Through the voltage adjustment unit 204, the electrical energy stored in the output capacitor Cout is quickly released, thereby rapidly reducing the input voltage input to the transmitting chip 202 to the target transmission voltage, completing the switching of the working mode, reducing the probability of abnormal brightening or increased noise in the generated image, and thus improving the imaging quality of the ultrasound diagnostic device 20.

[0083] In one alternative implementation, such as Figure 3 As shown, the control unit 203 includes a host computer 2031 and a controller 2032, and the host computer 2031 and the controller 2032 are electrically connected.

[0084] The host computer 2031 is used to respond to the user's operation command, select the working mode of the ultrasound diagnostic device 20, determine the target transmission voltage corresponding to the selected working mode, and send the determined target transmission voltage to the controller 2032.

[0085] The controller 2032 is used to generate a reference voltage based on the received target transmission voltage and send the generated reference voltage to the transmission power supply 201 so that the transmission power supply 201 adjusts its output transmission voltage to the target transmission voltage according to the reference voltage. It also acquires the input voltage input to the transmission chip 202 in real time. When the input voltage is detected to be greater than the target transmission voltage, it determines the discharge duration based on the input voltage and the target transmission voltage, and generates a first control signal based on the relationship between the discharge duration and a preset duration threshold to control the voltage regulation unit 204 to adjust the discharge rate of the output capacitor Cout, thereby achieving the purpose of rapidly reducing the input voltage.

[0086] It should be noted that, in this embodiment of the invention, the controller 2032 can be an MCU (Microcontroller Unit), a CPU (Central Processing Unit), or other electronic devices with control functions. This embodiment of the invention does not impose any restrictions on this. The host computer 2031 can be a personal computer (PC), a host computer, or other computing devices that can directly send control commands. This embodiment of the invention also does not impose any restrictions on this.

[0087] In one alternative implementation, such as Figure 4 As shown, the voltage regulation unit 204 includes a first resistor R1, a second resistor R2, a first switch Q1, and a second switch Q2, wherein:

[0088] The first end of the first resistor R1 serves as the input end of the voltage regulation unit, and the second end of the first resistor R2 is electrically connected to one end of the second resistor R3 and the first end of the first switching transistor Q1, respectively.

[0089] The second terminal of the second resistor R2 is electrically connected to the first terminal of the second switch Q2;

[0090] The control terminal of the first switch Q1 and the control terminal of the second switch Q2 together serve as the control terminal of the voltage regulation unit 204. The second terminal of the first switch Q1 and the second terminal of the second switch Q2 are both grounded.

[0091] The voltage regulation unit 204 is specifically used to: under the control of the first control signal, disconnect the first switch Q1 and turn on the second switch Q2 so that both the first resistor R1 and the second resistor R2 are working; or, under the control of the first control signal, turn on the first switch Q1 and disconnect the second switch Q2 so that the first resistor R1 is working.

[0092] In one alternative implementation, the resistance of the first resistor R1 is greater than the resistance of the second resistor R2.

[0093] Optionally, the resistance of the first resistor R1 is much greater than the resistance of the second resistor R2, i.e., R1 >> R2.

[0094] It should be noted that, in this embodiment of the invention, the first switch Q1 can be a transistor, a MOS (Metal Oxide Semiconductor), or an IGBT (Insulated Gate Bipolar Transistor), and this embodiment of the invention does not impose any restrictions on this; the second switch Q2 can be a transistor, a MOS, or an IGBT, and this embodiment of the invention does not impose any restrictions on this either.

[0095] In one or more embodiments, the first switch Q1 and the second switch Q2 are both NMOS transistors.

[0096] In one alternative implementation, such as Figure 5 As shown, the first control signals (CTRL1, CTRL2) include a first control sub-signal CTRL1 for controlling the first switch Q1 and a second control sub-signal CTRL2 for controlling the second switch Q2.

[0097] The following examples illustrate how both the first switch Q1 and the second switch Q2 are NMOS transistors:

[0098] In specific implementation, such as Figure 5 As shown, the controller 2032 sends the first control sub-signal CTRL1 to the control terminal of the first switch Q1 to control the first switch Q1 to turn on or off, and sends the second control sub-signal CTRL2 to the control terminal of the second switch Q2 to control the second switch Q2 to turn on or off.

[0099] When the first control sub-signal CTRL1 is a high-level signal, the first switch Q1 is turned on; when the first control sub-signal CTRL1 is a low-level signal, the first switch Q1 is turned off.

[0100] When the second control sub-signal CTRL2 is high, the second switch Q2 is turned on; when the second control sub-signal CTRL2 is low, the second switch Q2 is turned off.

[0101] In specific implementation, under the control of the first control signal (CTRL1, CTRL2), the voltage regulation unit 204 has two discharge modes:

[0102] First-stage discharge mode:

[0103] The first control sub-signal CTRL1 output by the control unit 203 is a low-level signal, and the second control sub-signal CTRL2 is a high-level signal. Under the control of the first control signals (CTRL1 and CTRL2), the voltage regulation unit 204 enters the first-level discharge mode.

[0104] At this time, the first switch Q1 is turned off under the control of the first control sub-signal CTRL1, and the second switch Q2 is turned on under the control of the second control sub-signal CTRL2. The first resistor R1 and the second resistor R2 are connected in series in the circuit as the output load of the transmitting power supply 201, that is, the output load is: Rout = R1 + R2. Since the output load is large, the discharge rate of the output capacitor Cout is slow.

[0105] Second-stage discharge mode:

[0106] The first control sub-signal CTRL1 output by the control unit 203 is a high-level signal, and the second control sub-signal CTRL2 is a low-level signal. Under the control of the first control signals (CTRL1 and CTRL2), the voltage regulation unit 204 enters the second-level discharge mode.

[0107] At this time, the first switch Q1 is turned on under the control of the first control sub-signal CTRL1, and the second switch Q2 is turned off under the control of the second control sub-signal CTRL2. The first resistor R1 is connected to the circuit as the output load of the transmitting power supply 201, and the second resistor R2 is not connected to the circuit. That is, the output load is: Rout = R1. Since the output load is small, the discharge rate of the output capacitor Cout is fast.

[0108] In this embodiment of the invention, the voltage regulation unit 204 adjusts the discharge rate of the output capacitor Cout by using a resistor, and sets the resistance value of the first resistor R1 to be much greater than the resistance value of the second resistor R2, so that the discharge rate of the output capacitor Cout is different when different resistors are connected, thereby realizing flexible adjustment of the discharge rate of the output capacitor Cout.

[0109] In one or more embodiments, the first control sub-signal CTRL1 and the second control sub-signal CTRL2 can be determined in the following manner:

[0110] In one alternative implementation, the control unit 203 is specifically used for:

[0111] Compare the discharge duration Tdis with the preset duration threshold Tth;

[0112] If the discharge duration Tdis is not greater than the preset duration threshold Tth, then the level state of the first control sub-signal CTRL1 is set to the first level state, and the level state of the second control sub-signal CTRL2 is set to the second level state.

[0113] If the discharge duration Tdis is greater than the preset duration threshold Tth, then the level state of the first control sub-signal CTRL1 is set to the first level state, and the level state of the second control sub-signal CTRL2 is set to the second level state. When the preset duration threshold Tth is reached, the level state of the first control sub-signal CTRL1 is set to the second level state, and the level state of the second control sub-signal CTRL2 is set to the first level state.

[0114] The first level state is used to control the switch to turn off, and the second level state is used to control the switch to turn on.

[0115] In one or more embodiments, a first level state is used to control the first switch Q1 to turn off, and a second level state is used to control the first switch Q1 to turn on.

[0116] In one or more embodiments, a first level state is used to control the second switch Q2 to turn off, and a second level state is used to control the second switch Q2 to turn on.

[0117] It should be noted that, in this embodiment of the invention, if both the first switch Q1 and the second switch Q2 are NMOS transistors, the first level state is a low level state and the second level state is a high level state; if both the first switch Q1 and the second switch Q2 are PMOS transistors, the first level state is a high level state and the second level state is a low level state.

[0118] The following example illustrates the situation using NMOS transistors as the first switch Q1 and the second switch Q2, with the first voltage level being low and the second voltage level being high:

[0119] In specific implementation, when the control unit 203 determines that the discharge duration Tdis is less than or equal to the preset duration threshold Tth, it outputs the first control sub-signal CTRL1 as a high-level signal and the second control sub-signal CTRL2 as a low-level signal. At this time, the first switch Q1 is turned off under the control of the first control sub-signal CTRL1, and the second switch Q2 is turned on under the control of the second control sub-signal CTRL2. The first resistor R1 and the second resistor R2 are connected in series in the circuit, that is, the voltage regulation unit 204 enters the first-level discharge mode.

[0120] For example, a preset duration threshold Tth = 0.15s is set, and the discharge duration Tdis = 0.13s is determined by the control unit 203. Since Tdis = 0.13s < Tth = 0.15s, the generated first control sub-signal CTRL1 is a high-level signal and the second control sub-signal CTRL2 is a low-level signal, so as to control the voltage regulation unit 204 to enter the first-level discharge mode, thereby realizing the regulation of the input voltage.

[0121] In specific implementation, when the control unit 203 determines that the discharge duration Tdis is greater than the preset duration threshold Tth, it first outputs the first control sub-signal CTRL1 as a high-level signal and the second control sub-signal CTRL2 as a low-level signal, and starts timing. At this time, the first switch Q1 is turned off under the control of the first control sub-signal CTRL1, and the second switch Q2 is turned on under the control of the second control sub-signal CTRL2. The first resistor R1 and the second resistor R2 are connected in series in the circuit, that is, the voltage regulation unit 204 enters the first-level discharge mode.

[0122] Then, when the control unit 203 reaches the preset duration threshold Tth, the first control sub-signal CTRL1 is changed to a low level signal and the second control sub-signal CTRL2 is changed to a high level signal. At this time, the first switch Q1 is turned on under the control of the first control sub-signal CTRL1, and the second switch Q2 is turned off under the control of the second control sub-signal CTRL2. The first resistor R1 is connected to the circuit, and the second resistor R2 is not connected to the circuit. That is, the voltage regulation unit 204 enters the second-stage discharge mode.

[0123] For example, a preset duration threshold Tth = 0.15s is set. Assuming the discharge duration Tdis = 0.25s is determined by the control unit 203, since Tdis = 0.25s > Tth = 0.15s, and ΔT = Tdis - Tth = 0.25s - 0.15s = 0.1s, the first control sub-signal CTRL1 is output as a high-level signal and the second control sub-signal CTRL2 is output as a low-level signal within the 0.15s duration, so as to control the voltage regulation unit 204 to enter the first-level discharge mode. Then, within the remaining ΔT = 0.1s duration, the first control sub-signal CTRL1 is output as a low-level signal and the second control sub-signal CTRL2 is output as a high-level signal, so as to control the voltage regulation unit 204 to enter the second-level discharge mode, thereby realizing the regulation of the input voltage.

[0124] By using the two-stage discharge mode of the voltage regulation unit 204, the energy of each discharge voltage range is reasonably distributed, resulting in low circuit loss and high reliability. Furthermore, the voltage regulation unit 204 will not impose an additional large load on the transmitting power supply 201, thus avoiding voltage fluctuations in the transmitting power supply 201. In addition, by setting the voltage regulation unit 204 to operate primarily in the first-stage discharge mode, the occurrence of overheating of the electronic components in the voltage regulation unit 204 due to excessively fast discharge rate, which could burn out resistors or switching transistors, is reduced, thereby achieving the purpose of circuit protection.

[0125] In one or more embodiments, the discharge duration Tdis can be determined in the following way:

[0126] In one alternative implementation, the control unit 203 is specifically used for:

[0127] Compare the input voltage Vhv and the target transmit voltage Vaim;

[0128] If the input voltage Vhv is greater than the target transmission voltage Vaim, then calculate the difference between the logarithm of the input voltage Vhv and the logarithm of the target transmission voltage Vaim, and multiply the difference by the time coefficient τc as the discharge duration Tdis;

[0129] Wherein, the time coefficient τc is the product of the total resistance value and the capacitance value of the output capacitor Cout, and the total resistance value is the sum of the resistance values ​​of the first resistor R1 and the second resistor R2.

[0130] In one or more embodiments, when the voltage regulation unit 204 is in the first-stage discharge mode, according to the formula:

[0131]

[0132] In the formula, V aim V is the target transmission voltage. hv τc is the input voltage to the transmitter chip 202, t is the time coefficient, and t is the discharge duration.

[0133] The discharge time T1 in the first-stage discharge mode can be determined. At this time, the time coefficient is: τc=(R1+R2)×Cout. Therefore, the discharge time T1 in the first-stage discharge mode is:

[0134] T1=(ln(Vhv)-ln(Vaim))×τc

[0135] =(ln(Vhv)-ln(Vaim))×((R1+R2)×Cout)

[0136] In the formula, "ln" is the logarithmic operator in mathematics, Vhv is the input voltage, Vaim is the target transmission voltage, R1 is the resistance value of the first resistor R1, R2 is the resistance value of the second resistor R2, and Cout is the capacitance value of the output capacitor Cout.

[0137] For example, assuming the resistance of the first resistor R1 is R1 = 1Ω, the resistance of the second resistor R2 is R2 = 0.01Ω, the capacitance of the output capacitor Cout is Cout = 2F, the input voltage is Vhv = 80V, and the target emission voltage is Vaim = 20V, then the calculated discharge time T1 is: T1 = (ln80 - ln20) × ((1 + 0.01) × 2) ≈ 2.8s.

[0138] like Figure 6The figure shows a first-stage discharge curve of a voltage regulation unit 204 in the first-stage discharge mode. The discharge law of the first-stage discharge curve conforms to the above formula.

[0139] In one or more embodiments, when the voltage regulation unit 204 is in the second-stage discharge mode, according to the formula:

[0140]

[0141] In the formula, V aim V is the target transmission voltage. hv τc is the input voltage to the transmitter chip 202, t is the time coefficient, and t is the discharge duration.

[0142] The discharge time T2 in the second-stage discharge mode can be determined. At this time, the time coefficient is: τc = R1 × Cout. Therefore, the discharge time T1 in the first-stage discharge mode is:

[0143] T1=(ln(Vhv)-ln(Vaim))×τc

[0144] =(ln(Vhv)-ln(Vaim))×(R1×Cout)

[0145] In the formula, "ln" is the logarithmic operator in mathematics, Vhv is the input voltage, Vaim is the target transmission voltage, R1 is the resistance value of the first resistor R1, and Cout is the capacitance value of the output capacitor Cout.

[0146] For example, assuming the resistance of the first resistor R1 is R1 = 1Ω, the capacitance of the output capacitor Cout is Cout = 2F, the input voltage is Vhv = 80V, and the target emission voltage is Vaim = 20V, then the calculated discharge time T1 is: T1 = (ln80 - ln20) × (1 × 2) ≈ 2.77s.

[0147] like Figure 7 The figure shows a second-stage discharge curve of a voltage regulation unit 204 in the second-stage discharge mode. The discharge law of the second-stage discharge curve conforms to the above formula.

[0148] Optionally, the discharge duration T1 of the voltage regulation unit 204 in the first-level discharge mode is taken as the discharge duration Tdis, i.e., Tdis = T1.

[0149] In the specific implementation, firstly, the total resistance value is calculated based on the sum of the resistance values ​​of the first resistor R1 and the second resistor R2, that is, the total resistance value is R1+R2; then, the time coefficient τc is calculated based on the product of the total resistance value and the capacitance value of the output capacitor Cout, that is, τc=(R1+R2)×Cout; finally, the discharge duration Tdis is calculated based on the input voltage Vhv, the target transmission voltage Vaim and the time coefficient τc, that is, Tdis=(ln(Vhv)-ln(Vaim))×((R1+R2)×Cout).

[0150] For example, assuming the input voltage obtained by the control unit 203 is: Vhv=50V, the target transmission voltage is: Vaim=20V, and the resistance value of the first resistor R1 is set to: R1=1Ω, the resistance value of the second resistor R2 is: R2=0.01Ω, and the capacitance value of the output capacitor Cout is: Cout=2F, then the calculated discharge time Tdis is: Tdis=(ln50-ln20)×((1+0.01)×2)≈1.85s.

[0151] In one or more embodiments, when the discharge time Tdis is greater than the preset duration threshold Tth, the voltage regulation unit 204 first operates in the first-level discharge mode, and then operates in the second-level discharge mode until the input voltage Vhv is equal to the target transmission voltage Vaim, at which point it stops operating.

[0152] like Figure 8 The figure shown is a discharge curve of a voltage regulation unit 204 employing a combination of a first-stage discharge mode and a second-stage discharge mode. Figure 8 As shown, the input voltage is reduced from 100V to 0V, and the total discharge time is less than 0.3s.

[0153] When the voltage regulation unit 204 samples the combined discharge mode of the first-stage discharge mode and the second-stage discharge mode, the total time for reducing the input voltage Vhv to the target transmission voltage Vaim can be determined by the following formula:

[0154]

[0155] By rapidly discharging the input voltage Vhv through the above method, the input voltage Vhv is quickly reduced to be equal to the target transmission voltage Vaim, ensuring a smooth transition between different working modes of the ultrasound diagnostic equipment. This results in ultrasound images generated by the ultrasound diagnostic equipment without cluttered interfaces during the switching of working modes, thus improving the performance of the ultrasound diagnostic equipment.

[0156] In an alternative implementation, the control unit 203 is further configured to:

[0157] When the input voltage Vhv is detected to be equal to the target transmission voltage Vaim, a second control signal is generated to control the voltage regulation unit 204 to stop working.

[0158] In practice, when the control unit 203 detects that the input voltage Vhv drops to be equal to the target transmission voltage Vaim, it generates a second control signal to control the voltage regulation unit 204 to stop working, thereby enabling the ultrasound diagnostic device to work in the selected working mode.

[0159] In one optional implementation, the second control signal includes a third control sub-signal for controlling the first switch Q1 and a fourth control sub-signal for controlling the second switch Q2.

[0160] Control unit 203 is specifically used for:

[0161] Set the level state of the third control sub-signal to the first level state, and set the level state of the fourth control sub-signal to the first level state.

[0162] In a specific implementation, by setting both the level state of the third control sub-signal and the level state of the third control sub-signal to the first level state, the first switch Q1 and the second switch Q2 are both turned off, thereby causing the voltage regulation unit 204 to stop working.

[0163] In one alternative implementation, such as Figure 9 As shown, the ultrasound diagnostic device also includes a detection unit 91;

[0164] The input terminal of the detection unit 91 is electrically connected to the input terminal of the transmitter chip 202, and the output terminal of the detection unit 91 is electrically connected to the input terminal of the control unit 203.

[0165] The detection unit 91 is used to detect the input voltage and transmit the detected input voltage to the control unit 203.

[0166] Optionally, the detection unit 91 can be a voltage detection chip.

[0167] In one alternative implementation, such as Figure 10 As shown, the ultrasound diagnostic device also includes a transducer 1001 and a receiver chip 1002, wherein:

[0168] The input terminal of transducer 1001 is electrically connected to the output terminal of transmitter chip 202, the output terminal of transducer 1001 is electrically connected to the input terminal of receiver chip 1002, and the output terminal of receiver chip 1002 is electrically connected to the feedback terminal of host computer 2031.

[0169] The transmitting chip 202 is also used to generate a pulse signal similar to a sine wave based on the received input voltage;

[0170] The transducer 1001 is used to receive the pulse signal output by the transmitting chip, generate sound waves under the control of the pulse signal, and receive the feedback signal after being reflected by human tissue.

[0171] The receiving chip 1002 is used to receive the feedback signal output by the transducer 1001 and transmit the feedback signal to the host computer 2031.

[0172] The host computer 2031 is also used to perform a series of processes on the received feedback signals according to a specific algorithm to obtain ultrasound images.

[0173] Based on the same concept, embodiments of the present invention also provide a method for controlling the transmission voltage of an ultrasound diagnostic device. The ultrasound diagnostic device includes a transmission power supply, an output capacitor, a transmission chip, a control unit, and a voltage regulation unit, such as... Figure 11 As shown, the method includes the following steps:

[0174] Step S1101: Determine the target transmission voltage according to the working mode of the ultrasound diagnostic equipment, adjust the transmission voltage output by the transmission power supply to the target transmission voltage, and acquire the input voltage input to the transmission chip in real time;

[0175] Step S1102: When the input voltage is detected to be greater than the target transmission voltage, the discharge duration is determined based on the input voltage and the target transmission voltage;

[0176] Step S1103: Generate a first control signal based on the relationship between the discharge duration and the preset duration threshold;

[0177] In step S1104, under the control of the first control signal, the discharge rate of the output capacitor is adjusted to reduce the input voltage.

[0178] In one optional implementation, determining the discharge duration based on the input voltage and the target transmission voltage includes:

[0179] Calculate the difference between the logarithm of the input voltage and the logarithm of the target transmission voltage, and multiply the difference by the time coefficient to obtain the discharge duration;

[0180] The time coefficient is the product of the total resistance and the capacitance of the output capacitor, where the total resistance is the sum of the resistance of the first resistor and the resistance of the second resistor.

[0181] In one optional implementation, the first control signal includes a first control sub-signal for controlling the first switching transistor and a second control sub-signal for controlling the second switching transistor;

[0182] Based on the relationship between the discharge duration and the preset duration threshold, a first control signal is generated, including:

[0183] Compare the discharge duration with the preset duration threshold;

[0184] If the discharge duration is not greater than the preset duration threshold, then the level state of the first control sub-signal is set to the first level state, and the level state of the second control sub-signal is set to the second level state.

[0185] If the discharge duration exceeds the preset duration threshold, the level state of the first control sub-signal is set to the first level state, and the level state of the second control sub-signal is set to the second level state. When the preset duration threshold is reached, the level state of the first control sub-signal is set to the second level state, and the level state of the second control sub-signal is set to the first level state.

[0186] The first level state is used to control the switch to turn off, and the second level state is used to control the switch to turn on.

[0187] In one alternative implementation, the method further includes:

[0188] When the input voltage is detected to be equal to the target transmission voltage, a second control signal is generated to control the voltage regulation unit to stop working.

[0189] In one optional implementation, the second control signal includes a third control sub-signal for controlling the first switching transistor and a fourth control sub-signal for controlling the second switching transistor.

[0190] Generate a second control signal for controlling the voltage regulation unit to stop operating, including:

[0191] Set the level state of the third control sub-signal to the first level state, and set the level state of the fourth control sub-signal to the first level state.

[0192] Figure 12 A complete flowchart of a voltage regulation method provided by an embodiment of the present invention is shown, as follows: Figure 12 As shown, the method includes the following steps:

[0193] In step S1201, the host computer responds to the user's operation command, selects the working mode of the ultrasound diagnostic equipment, determines the target transmission voltage corresponding to the selected working mode, and sends the determined target transmission voltage to the controller.

[0194] In step S1202, the controller generates a reference voltage based on the received target transmission voltage and sends the generated reference voltage to the transmission power supply.

[0195] In step S1203, the transmitting power supply adjusts its output transmitting voltage to the target transmitting voltage based on the reference voltage.

[0196] Step S1204: The controller acquires the input voltage to the transmitter chip in real time;

[0197] Step S1205: The controller detects whether the input voltage is greater than the target transmission voltage. If so, step S1206 is executed; otherwise, step S1208 is executed.

[0198] Step S1206: The controller calculates the discharge duration based on the input voltage and the target transmission voltage, and generates a first control signal based on the relationship between the discharge duration and the preset duration threshold, and sends the first control signal to the voltage regulation unit.

[0199] In step S1207, the voltage regulation unit, under the control of the first control signal, adjusts the discharge rate of the output capacitor to reduce the input voltage;

[0200] In step S1208, the controller detects that the input voltage is equal to the target transmission voltage, generates a second control signal, and sends the second control signal to the voltage regulation unit;

[0201] In step S1209, the voltage regulation unit stops working under the control of the second control signal.

[0202] Those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this invention is also intended to include these modifications and variations.

Claims

1. An ultrasonic diagnostic apparatus, characterized by comprising: The transmitter power supply, the output capacitor, the transmitting chip, the control unit and the voltage regulation unit are included, wherein: The control unit is electrically connected with the transmitter power supply, the output capacitor, the transmitting chip and the voltage regulation unit respectively, and is configured to determine a target transmitting voltage according to a working mode of the ultrasonic diagnostic equipment, adjust a transmitting voltage output by the transmitter power supply to the target transmitting voltage, and acquire an input voltage input to the transmitting chip in real time; when it is detected that the input voltage is greater than the target transmitting voltage, determine a discharge duration according to the input voltage and the target transmitting voltage, and generate and output a first control signal to the voltage regulation unit according to a size relationship between the discharge duration and a preset duration threshold; The voltage regulation unit is also electrically connected with the transmitter power supply, the output capacitor and the transmitting chip, and is configured to adjust a discharge rate of the output capacitor under the control of the first control signal to reduce the input voltage; The voltage regulation unit includes a first resistor, a second resistor, a first switch tube and a second switch tube; a first end of the first resistor is electrically connected with the output capacitor, and a second end of the first resistor is electrically connected with one end of the second resistor and a first end of the first switch tube respectively; a second end of the second resistor is electrically connected with a first end of the second switch tube; a control end of the first switch tube and a control end of the second switch tube are configured to receive the first control signal, and a second end of the first switch tube and a second end of the second switch tube are grounded; The voltage regulation unit adjusts the discharge rate of the output capacitor by the following manner: under the control of the first control signal, the first switch tube is turned off and the second switch tube is turned on, so that the first resistor and the second resistor both work, or under the control of the first control signal, the first switch tube is turned on and the second switch tube is turned off, so that the first resistor works; The first control signal includes a first control sub-signal for controlling the first switch tube and a second control sub-signal for controlling the second switch tube; the control unit generates the first control signal by the following manner: In the case that the discharge duration is not greater than the preset duration threshold, the level state of the first control sub-signal is set as a first level state, and the level state of the second control sub-signal is set as a second level state, wherein the first level state is used to control the switch tube to be turned off, and the second level state is used to control the switch tube to be turned on; In the case that the discharge duration is greater than the preset duration threshold, the level state of the first control sub-signal is set as the first level state, the level state of the second control sub-signal is set as the second level state, and when the preset duration threshold is reached, the level state of the first control sub-signal is set as the second level state, and the level state of the second control sub-signal is set as the first level state.

2. The apparatus of claim 1, wherein, The resistance value of the first resistor is greater than the resistance value of the second resistor.

3. The apparatus of claim 1, wherein, The control unit is specifically configured to: compare the input voltage and the target transmitting voltage; If the input voltage is greater than the target emission voltage, a difference between a logarithmic value of the input voltage and a logarithmic value of the target emission voltage is calculated, and a product of the difference and a time coefficient is taken as the discharge duration; The time coefficient is a product of a total resistance value and a capacitance value of the output capacitor, and the total resistance value is a sum of a resistance value of the first resistor and a resistance value of the second resistor.

4. The apparatus of claim 1, wherein, The control unit is further configured to: generate a second control signal for controlling the voltage regulation unit to stop working when the input voltage is detected to be equal to the target emission voltage.

5. The apparatus of claim 4, wherein, The second control signal includes a third control sub-signal for controlling the first switch and a fourth control sub-signal for controlling the second switch. The control unit is specifically configured to: set a level state of the third control sub-signal as the first level state, and set a level state of the fourth control sub-signal as the first level state.

6. The apparatus of any one of claims 1-5, wherein, The detection unit is further included. An input end of the detection unit is electrically connected with an input end of the emission chip, and an output end of the detection unit is electrically connected with an input end of the control unit. The detection unit is configured to detect the input voltage and transmit the detected input voltage to the control unit.

7. A transmit voltage control method of an ultrasonic diagnostic apparatus, characterized by, The ultrasonic diagnostic equipment includes an emission power supply, an output capacitor, an emission chip, a control unit, and a voltage regulation unit, and the method includes: The control unit determines a target emission voltage according to a working mode of the ultrasonic diagnostic equipment, adjusts an emission voltage output by the emission power supply to the target emission voltage, and acquires an input voltage input to the emission chip in real time; The control unit determines a discharge duration according to the input voltage and the target emission voltage when the input voltage is detected to be greater than the target emission voltage; The control unit generates a first control signal according to a size relationship between the discharge duration and a preset duration threshold; The voltage regulation unit adjusts a discharge rate of the output capacitor to reduce the input voltage under the control of the first control signal. The voltage regulation unit adjusts the discharge rate of the output capacitor under the control of the first control signal, which includes: The first switch in the voltage regulation unit is turned off and the second switch in the voltage regulation unit is turned on under the control of the first control signal, so that the first resistor in the voltage regulation unit and the second resistor in the voltage regulation unit both work, or the first switch is turned on and the second switch is turned off under the control of the first control signal, so that the first resistor works, and the first resistor is electrically connected with the output capacitor; The first control signal includes a first control sub-signal for controlling the first switch and a second control sub-signal for controlling the second switch; and the control unit generates the first control signal according to the size relationship between the discharge duration and the preset duration threshold, which includes: In a case where the discharge duration is not greater than the preset duration threshold, the control unit sets a level state of a first control sub-signal as a first level state and a level state of a second control sub-signal as a second level state, wherein the first level state is used to control the switch tube to be turned off, and the second level state is used to control the switch tube to be turned on. In a case where the discharge duration is greater than the preset duration threshold, the control unit sets the level state of the first control sub-signal as the first level state and the level state of the second control sub-signal as the second level state, and when the preset duration threshold is reached, the control unit sets the level state of the first control sub-signal as the second level state and the level state of the second control sub-signal as the first level state.

8. The method of claim 7, wherein, The discharge duration is determined according to the input voltage and the target emission voltage, including: calculating a difference between a logarithmic value of the input voltage and a logarithmic value of the target emission voltage, and taking a product of the difference and a time coefficient as the discharge duration; wherein the time coefficient is a product of a total resistance value and a capacitance value of the output capacitor, and the total resistance value is a sum of a resistance value of the first resistor and a resistance value of the second resistor.

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