Ultrasonic diagnosis equipment and emission voltage control method of ultrasonic diagnosis equipment

Abstract

The invention discloses ultrasonic diagnosis equipment and an emission voltage control method of the ultrasonic diagnosis equipment, the ultrasonic diagnosis equipment comprises an emission power supply, an output capacitor, an emission chip, a control unit and a voltage regulation unit, and the control unit determines a target emission voltage according to a working mode of the ultrasonic diagnosis equipment; adjusting the emission voltage output by the emission power supply to a target emission voltage, acquiring an input voltage input to the emission chip in real time, when the input voltage is greater than the target emission voltage, determining a discharge duration according to the input voltage and the target emission voltage, and generating a first control signal according to the discharge duration and a preset duration threshold; the voltage adjusting unit adjusts the discharge rate of the output capacitor to reduce the input voltage under the control of the first control signal. The electric energy stored in the output capacitor is quickly released through the voltage adjusting unit, so that the input voltage is quickly reduced, the working modes of the ultrasonic diagnosis equipment are quickly switched, and the imaging quality of the ultrasonic diagnosis equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to an ultrasonic diagnostic device and a method for controlling a transmitting voltage of the ultrasonic diagnostic device. Background Art

[0002] With the continuous development of ultrasonic imaging technology, the performance of ultrasonic diagnostic instruments has also been improved. In ultrasonic diagnostic instruments, the emission voltage output by the transmitting power supply is an important factor affecting the imaging quality. In order to improve the imaging quality of ultrasonic diagnostic instruments, the scanned part needs to be continuously oscillated, that is, it needs to continuously emit continuous pulse signals, which requires the transmitting power supply to continuously provide large current.

[0003] In the related art, in order to meet the above requirements, the output capacitance of the transmitting power supply needs to be set relatively large. However, a larger output capacitance will slow down the rate of decline of the transmitting voltage. Since different scanning modes of the ultrasonic diagnostic instrument require different transmitting voltages, there will be a phenomenon of a large adjustment span of the transmitting voltage, for example, from 80V to 20V. Therefore, when the scanning mode is switched, the output voltage cannot be adjusted in time, causing the scanned image to become abnormally bright or increase in noise, thereby affecting the imaging quality of the ultrasonic scanner. Summary of the invention

[0004] The present invention provides an ultrasonic diagnostic device and a transmitting voltage control method for the ultrasonic diagnostic device, which are used to solve the problem in the prior art that when the working mode of the ultrasonic diagnostic device is switched, the voltage input to the transmitting chip cannot be adjusted in time, resulting in poor imaging quality of the ultrasonic diagnostic device.

[0005] In a first aspect, an embodiment of the present invention provides an ultrasonic diagnostic device, including a transmitting power supply, an output capacitor, a transmitting chip, a control unit, and a voltage regulating unit, wherein:

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

[0007] The control unit is used to determine a target transmitting voltage according to a working mode of the ultrasonic diagnostic device; adjust the transmitting voltage output by the transmitting power supply to the target transmitting voltage, and obtain the input voltage input to the transmitting chip in real time, and when it is detected that the input voltage is greater than the target transmitting voltage, determine the discharge duration according to the input voltage and the target transmitting voltage, and generate a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold;

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

[0009] In an optional implementation, the voltage regulating unit includes a first resistor, a second resistor, a first switch tube, and a second switch tube, wherein:

[0010] The first end of the first resistor serves as the input end of the voltage regulating 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 switch tube respectively;

[0011] The second end of the second resistor is electrically connected to the first end of the second switch tube;

[0012] The control end of the first switch tube and the control end of the second switch tube are used together as the control end of the voltage regulating unit, and the second end of the first switch tube and the second end of the second switch tube are both grounded;

[0013] The voltage regulating unit is specifically used to: under the control of the first control signal, turn off the first switch tube and turn on the second switch tube so that both the first resistor and the second resistor work, or, under the control of the first control signal, turn on the first switch tube and turn off the second switch tube so that the first resistor works.

[0014] In an optional implementation, the resistance of the first resistor is greater than the resistance of the second resistor.

[0015] In an optional implementation, the control unit is specifically configured to:

[0016] comparing the input voltage with the target emission voltage;

[0017] If the input voltage is greater than the target emission voltage, the difference between the logarithm of the input voltage and the logarithm of the target emission 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, and the total resistance value is the sum of the resistance value of the first resistor and the resistance value of the second resistor.

[0019] In an optional implementation, 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;

[0020] The control unit is specifically used for:

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

[0022] If the discharge duration is not greater than the preset duration threshold, setting the level state of the first control sub-signal to the first level state, and setting the level state of the second control sub-signal 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, and 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 tube to be turned off, and the second level state is used to control the switch tube to be turned on.

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

[0026] When it is detected that the input voltage is equal to the target emission voltage, a second control signal for controlling the voltage regulating unit to stop operating is generated.

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

[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 an optional embodiment, the device further comprises a detection unit;

[0031] The input end of the detection unit is electrically connected to the input end of the transmitting chip, and the output end of the detection unit is electrically connected to the input end 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] In a second aspect, an embodiment of the present invention provides a method for controlling a transmitting voltage of an ultrasonic diagnostic device, wherein the ultrasonic diagnostic device includes a transmitting power supply, an output capacitor, a transmitting chip, a control unit, and a voltage regulating unit, and the method includes:

[0034] Determine the target transmitting voltage according to the working mode of the ultrasonic diagnostic equipment, adjust the transmitting voltage output by the transmitting power supply to the target transmitting voltage, and obtain the input voltage input to the transmitting chip in real time;

[0035] When it is detected that the input voltage is greater than the target emission voltage, determining the discharge duration according to the input voltage and the target emission voltage;

[0036] Generate a first control signal according to a magnitude relationship between the discharge duration and a preset duration threshold;

[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 an optional implementation, determining the discharge duration according to the input voltage and the target emission voltage includes:

[0039] Calculating the difference between the logarithm of the input voltage and the logarithm of the target emission voltage, and taking the product of the difference and the time coefficient as the discharge duration;

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

[0041] In an optional implementation, 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;

[0042] The generating a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold comprises:

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

[0044] If the discharge duration is not greater than the preset duration threshold, setting the level state of the first control sub-signal to the first level state, and setting the level state of the second control sub-signal 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, and 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 tube to be turned off, and the second level state is used to control the switch tube to be turned on.

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

[0048] When it is detected that the input voltage is equal to the target emission voltage, a second control signal for controlling the voltage regulating unit to stop operating is generated.

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

[0050] The generating of the second control signal for controlling the voltage regulating unit to stop working comprises:

[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 solution provided by the embodiments of the present invention brings at least the following beneficial effects:

[0053] In the ultrasonic diagnostic device provided by the embodiment of the present invention, when the ultrasonic diagnostic device switches the working mode, the control unit adjusts the transmitting voltage output by the transmitting power supply to the target transmitting voltage determined by the working mode of the ultrasonic diagnostic device, and obtains 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 transmitting voltage, the discharge duration is determined according to the input voltage and the target transmitting voltage, and a first control signal for controlling the voltage regulating unit to adjust the discharge rate of the output capacitor is generated according to the magnitude relationship between the discharge duration and the preset duration threshold. The electric energy stored in the output capacitor is quickly released through the voltage regulating unit, so that the input voltage input to the transmitting chip is quickly reduced to the target transmitting voltage, the working mode is switched, and the probability of abnormal brightening or increased noise in the generated image is reduced, thereby improving the imaging quality of the ultrasonic diagnostic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0055] Figure 1 A schematic diagram of the structure of an application scenario of an ultrasonic diagnostic device provided by an embodiment of the present invention;

[0056] Figure 2 A schematic diagram of the structure of an ultrasonic diagnostic device provided by an embodiment of the present invention;

[0057] Figure 3 A schematic diagram of the structure of another ultrasonic diagnostic device provided by an embodiment of the present invention;

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

[0059] Figure 5 A schematic diagram of the structure of another ultrasonic diagnostic device provided by an embodiment of the present invention;

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

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

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

[0063] Fig. 9 A schematic diagram of the structure of another ultrasonic diagnostic device provided by an embodiment of the present invention;

[0064] Fig.10 A schematic diagram of the structure of another ultrasonic diagnostic device provided by an embodiment of the present invention;

[0065] Fig.11 A schematic flow chart of a method for controlling a transmitting voltage of an ultrasonic diagnostic device provided by an embodiment of the present invention;

[0066] Fig.12 A complete flow chart of a method for controlling a transmitting voltage of an ultrasonic diagnostic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0069] The embodiment of the present invention provides an ultrasonic diagnostic device and a method for controlling the transmitting voltage of the ultrasonic diagnostic device. The voltage regulating unit is used to quickly release the electric energy stored in the output capacitor, so that the input voltage input to the transmitting chip is quickly reduced to the target transmitting voltage, the working mode is switched, and the probability of abnormal brightening or increased noise in the generated image is reduced, thereby improving the imaging quality of the ultrasonic diagnostic device.

[0070] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0071] The ultrasonic diagnostic equipment provided by the embodiment of the present invention can be applied in the application scenario of medical ultrasonic diagnosis. Figure 1 A schematic diagram of the structure of an application scenario of an ultrasonic diagnostic device provided by an embodiment of the present invention is shown. Figure 1 As shown, the application scenario includes a user 10 and an ultrasonic diagnostic device 20 .

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

[0073] Optionally, the ultrasonic diagnostic equipment may be an ultrasonic diagnostic instrument.

[0074] Of course, the method provided in the embodiment of the present invention is not limited to Figure 1 The application scenarios shown in the figure can also be used in other possible application scenarios, which are not limited by the embodiments of the present invention. Figure 1 The functions that can be realized by each part of the application scenario shown will be described in subsequent embodiments, and will not be described in detail here.

[0075] The ultrasonic diagnostic device 20 provided in the above application scenario is introduced below in conjunction with a specific embodiment:

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

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

[0078] The control unit 203 is used to determine the target transmitting voltage according to the working mode of the ultrasonic diagnostic device 20; adjust the transmitting voltage output by the transmitting power supply 201 to the target transmitting voltage, and obtain the input voltage input to the transmitting chip 202 in real time, and when it is detected that the input voltage is greater than the target transmitting voltage, determine the discharge duration according to the input voltage and the target transmitting voltage, and generate a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold;

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

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

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

[0082] In the ultrasonic diagnostic device 20 provided by the embodiment of the present invention, when the ultrasonic diagnostic device 20 switches the working mode, the control unit 203 adjusts the transmitting voltage output by the transmitting power supply 201 to the target transmitting voltage determined by the working mode of the ultrasonic diagnostic device 20, and obtains 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 transmitting voltage, the discharge duration is determined according to the input voltage and the target transmitting voltage, and a first control signal for controlling the voltage regulating unit 204 to adjust the discharge rate of the output capacitor is generated according to the magnitude relationship between the discharge duration and the preset duration threshold. The electric energy stored in the output capacitor Cout is quickly released through the voltage regulating unit 204, so that the input voltage input to the transmitting chip 202 is quickly reduced to the target transmitting voltage, the working mode is switched, and the probability of abnormal brightening or increased noise in the generated image is reduced, thereby improving the imaging quality of the ultrasonic diagnostic device 20.

[0083] In an optional embodiment, if Figure 3 As shown, the control unit 203 includes a host computer 2031 and a controller 2032, and the host computer 2031 is electrically connected to the controller 2032;

[0084] The host computer 2031 is used to select the working mode of the ultrasonic diagnostic device 20 in response to the user's operation instruction; determine the target transmission voltage corresponding to the working mode according 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 according to 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 the transmission voltage output by itself to the target transmission voltage according to the reference voltage, and obtains the input voltage input to the transmission chip 202 in real time. When it is detected that the input voltage is greater than the target transmission voltage, the discharge duration is determined according to the input voltage and the target transmission voltage, and a first control signal is generated according to the relationship between the discharge duration and a preset duration threshold, so as to control the voltage adjustment unit 204 to adjust the discharge rate of the output capacitor Cout, thereby achieving the purpose of quickly reducing the input voltage.

[0086] It should be noted that, in the embodiment of the present invention, the controller 2032 can be an MCU (Microcontroller Unit), or a CPU (Central Process Unit), or other electronic devices with control functions, and the embodiment of the present invention does not impose any restrictions on this; the host computer 2031 can be a personal computer (Personal Computer, PC), or a host computer (Host Computer), or other computing devices that can directly send control instructions, and the embodiment of the present invention does not impose any restrictions on this.

[0087] In an optional embodiment, if Figure 4 As shown, the voltage regulating unit 204 includes a first resistor R1, a second resistor R2, a first switch tube Q1 and a second switch tube Q2, wherein:

[0088] The first end of the first resistor R1 serves as the input end of the voltage regulating 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 switch tube Q1 respectively;

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

[0090] The control end of the first switch tube Q1 and the control end of the second switch tube Q2 are used together as the control end of the voltage regulating unit 204, and the second end of the first switch tube Q1 and the second end of the second switch tube Q2 are both grounded;

[0091] The voltage regulating unit 204 is specifically used to: under the control of the first control signal, turn off the first switch tube Q1 and turn on the second switch tube Q2, so that both the first resistor R1 and the second resistor R2 work, or, under the control of the first control signal, turn on the first switch tube Q1 and turn off the second switch tube Q2, so that the first resistor R1 works.

[0092] In an optional 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, that is, R1>>R2.

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

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

[0096] In an optional embodiment, if Figure 5 As shown, the first control signal (CTRL1, CTRL2) includes a first control sub-signal CTRL1 for controlling the first switch tube Q1 and a second control sub-signal CTRL2 for controlling the second switch tube Q2.

[0097] The following embodiments are described by taking the first switch tube Q1 and the second switch tube Q2 as NMOS tubes as an example:

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

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

[0100] When the second control sub-signal CTRL2 is a high level signal, the second switch tube Q2 is controlled to be turned on; when the second control sub-signal CTRL2 is a low level signal, the second switch tube Q2 is controlled to be turned off.

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

[0102] First level 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. The voltage regulating unit 204 enters the first level discharge mode under the control of the first control signal (CTRL1, CTRL2).

[0104] At this time, the first switch tube Q1 is turned off under the control of the first control sub-signal CTRL1, and the second switch tube 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 to 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 level 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. The voltage regulating unit 204 enters the second level discharge mode under the control of the first control signal (CTRL1, CTRL2).

[0107] At this time, the first switch tube Q1 is turned on under the control of the first control sub-signal CTRL1, and the second switch tube 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 faster.

[0108] The voltage regulating unit 204 in the embodiment of the present invention adjusts the discharge rate of the output capacitor Cout by using resistors, and sets the resistance value of the first resistor R1 to be much larger than the resistance value of the second resistor R2, so that when different resistors are connected, the discharge rate of the output capacitor Cout is also different, thereby achieving 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 may be determined in the following manner:

[0110] In an optional implementation manner, the control unit 203 is specifically configured to:

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

[0112] If the discharge duration Tdis is not greater than the preset duration threshold Tth, 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, 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, and 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 tube to be turned off, and the second level state is used to control the switch tube to be turned on.

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

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

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

[0118] The following embodiments are described by taking the first switch tube Q1 and the second switch tube Q2 as NMOS tubes, the first level state as a low level state, and the second level state as a high level state as an example:

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

[0120] Exemplarily, the preset duration threshold Tth is set to 0.15s. Assuming that the discharge duration Tdis determined by the control unit 203 is 0.13s, 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 regulating unit 204 to enter the first-level discharge mode, thereby realizing the regulation of the input voltage.

[0121] In a specific implementation, when the control unit 203 determines that the discharge duration Tdis is greater than the preset duration threshold Tth, the first control sub-signal CTRL1 is first output as a high-level signal, the second control sub-signal CTRL2 is a low-level signal, and timing is started. At this time, the first switch tube Q1 is disconnected under the control of the first control sub-signal CTRL1, and the second switch tube Q2 is turned on under the control of the second control sub-signal CTRL2, and the first resistor R1 and the second resistor R2 are connected in series to 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 time 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 tube Q1 is turned on under the control of the first control sub-signal CTRL1, and the second switch tube 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-level discharge mode.

[0123] Exemplarily, the preset time threshold Tth is set to 0.15s. Assuming that the discharge time Tdis determined by the control unit 203 is 0.25s, 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 a time of 0.15s to control the voltage regulating unit 204 to enter the first-level discharge mode, and then within the remaining time of ΔT=0.1s, 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 to control the voltage regulating unit 204 to enter the second-level discharge mode, thereby achieving regulation of the input voltage.

[0124] Through the two-stage discharge mode of the voltage regulating unit 204, the energy of each stage of the discharge voltage range is reasonably distributed, the circuit loss is low, the reliability is high, and the voltage regulating unit 204 will not cause an additional large load on the transmitting power supply 201, thereby avoiding the voltage fluctuation of the transmitting power supply 201; in addition, the voltage regulating unit 204 is set to work in the first-stage discharge mode first, thereby reducing the temperature of the electronic devices in the voltage regulating unit 204 being too high due to the excessive discharge rate, thereby reducing the occurrence of the situation where the resistor or the switch tube is burned out, thereby achieving the purpose of protecting the circuit.

[0125] In one or more embodiments, the discharge duration Tdis may be determined by:

[0126] In an optional implementation manner, the control unit 203 is specifically configured to:

[0127] Compare the input voltage Vhv with the target emission voltage Vaim;

[0128] If the input voltage Vhv is greater than the target emission voltage Vaim, the difference between the logarithm of the input voltage Vhv and the logarithm of the target emission voltage Vaim is calculated, and the product of the difference and the time coefficient τc is used as the discharge duration Tdis;

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

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

[0131]

[0132] Where V aim is the target emission voltage, V hv is the input voltage to the transmitting chip 202, τc is the time coefficient, and t is the discharge duration.

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

[0134] T1=(ln(Vhv)-ln(Vaim))×τc

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

[0136] In the formula, "ln" is a logarithmic operation symbol in mathematics, Vhv is the input voltage, Vaim is the target emission 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] Exemplarily, assuming that the resistance value of the first resistor R1 is: R1=1Ω, the resistance value of the second resistor R2 is: R2=0.01Ω, the capacitance value 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 6As shown, it is a first-level discharge curve diagram when the voltage regulating unit 204 is in the first-level discharge mode. The discharge rule of the first-level discharge curve conforms to the above formula.

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

[0140]

[0141] Where V aim is the target emission voltage, V hv is the input voltage to the transmitting chip 202, τc is the time coefficient, and t is the discharge duration.

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

[0143] T1=(ln(Vhv)-ln(Vaim))×τc

[0144] =(ln(Vhv)-ln(Vaim))×(R1×Cout)

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

[0146] Exemplarily, assuming that the resistance value of the first resistor R1 is: R1=1Ω, the capacitance value 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 As shown, it is a second-level discharge curve diagram when the voltage regulating unit 204 is in the second-level discharge mode. The discharge rule of the second-level discharge curve conforms to the above formula.

[0148] Optionally, the discharge time T1 of the voltage regulating unit 204 in the first level discharge mode is used as the discharge time Tdis, that is, Tdis=T1.

[0149] In a specific implementation, first, the total resistance value is calculated according to 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 according to 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 according to the input voltage Vhv, the target emission voltage Vaim and the time coefficient τc, that is, Tdis=(ln(Vhv)-ln(Vaim))×((R1+R2)×Cout).

[0150] For example, assuming that the input voltage obtained by the control unit 203 is: Vhv=50V, the target emission 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 regulating 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 emission voltage Vaim, and then stops working.

[0152] like Figure 8 As shown in FIG. 1 , it is a discharge curve diagram of a voltage regulating unit 204 using a combination of a first-level discharge mode and a second-level discharge mode. Figure 8 As shown, when the input voltage is reduced from 100V to 0V, the total discharge time is less than 0.3s.

[0153] When the voltage regulating unit 204 samples the discharge mode combined with the first-level discharge mode and the second-level discharge mode, the total time duration for reducing the input voltage Vhv to the target emission voltage Vaim can be determined by the following formula:

[0154]

[0155] Through the above method, the input voltage Vhv is quickly discharged, so that the input voltage Vhv is quickly reduced to be equal to the target emission voltage Vaim, ensuring a smooth transition between different working modes of the ultrasonic diagnostic equipment, so that the ultrasonic image formed by the ultrasonic diagnostic equipment has no cluttered interface during the switching process of the working mode, thereby improving the performance of the ultrasonic diagnostic equipment.

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

[0157] When it is detected that the input voltage Vhv is equal to the target emission voltage Vaim, a second control signal for controlling the voltage regulating unit 204 to stop operating is generated.

[0158] In a specific implementation, 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 adjustment unit 204 to stop working, thereby making the ultrasonic diagnostic equipment work in the selected working mode.

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

[0160] The control unit 203 is specifically used for:

[0161] 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.

[0162] In a specific implementation, by setting 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 tube Q1 and the second switch tube Q2 are both disconnected, so that the voltage regulating unit 204 stops working.

[0163] In an optional embodiment, if Fig. 9 As shown, the ultrasonic diagnostic device further includes a detection unit 91;

[0164] The input end of the detection unit 91 is electrically connected to the input end of the transmitting chip 202, and the output end of the detection unit 91 is electrically connected to the input end 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 may be a voltage detection chip.

[0167] In an optional embodiment, if Fig.10 As shown, the ultrasonic diagnostic device further includes a transducer 1001 and a receiving chip 1002, wherein:

[0168] The input end of the transducer 1001 is electrically connected to the output end of the transmitting chip 202, the output end of the transducer 1001 is electrically connected to the input end of the receiving chip 1002, and the output end of the receiving chip 1002 is electrically connected to the feedback end of the host computer 2031;

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

[0170] The transducer 1001 is used to receive the pulse signal output by the transmitting chip, and generate sound waves under the control of the pulse signal, and receive feedback signals 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 processing on the received feedback signal according to a specific algorithm to obtain an ultrasonic image.

[0173] Based on the same concept, an embodiment of the present invention also provides a method for controlling a transmitting voltage of an ultrasonic diagnostic device, wherein the ultrasonic diagnostic device includes a transmitting power supply, an output capacitor, a transmitting chip, a control unit, and a voltage regulating unit. Fig.11 As shown, the method comprises the following steps:

[0174] Step S1101, determining a target transmitting voltage according to the working mode of the ultrasonic diagnostic equipment, adjusting the transmitting voltage output by the transmitting power supply to the target transmitting voltage, and acquiring the input voltage input to the transmitting chip in real time;

[0175] Step S1102, when it is detected that the input voltage is greater than the target emission voltage, the discharge duration is determined according to the input voltage and the target emission voltage;

[0176] Step S1103, generating a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold;

[0177] 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 an optional implementation, determining the discharge duration according to the input voltage and the target emission voltage includes:

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

[0180] 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 value of the first resistor and the resistance value of the second resistor.

[0181] In an optional implementation, 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;

[0182] Generating a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold includes:

[0183] Comparing the discharge duration with a preset duration threshold;

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

[0185] If the discharge duration is greater than a 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, and 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 tube to be turned off, and the second level state is used to control the switch tube to be turned on.

[0187] In an optional embodiment, the method further includes:

[0188] When it is detected that the input voltage is equal to the target emission voltage, a second control signal for controlling the voltage regulating unit to stop operating is generated.

[0189] In an optional implementation, the second control signal includes a third control sub-signal for controlling the first switch tube and a fourth control sub-signal for controlling the second switch tube;

[0190] Generating a second control signal for controlling the voltage regulating unit to stop working, comprising:

[0191] 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.

[0192] Fig.12 A complete flow chart of a voltage regulation method provided by an embodiment of the present invention is shown in FIG. Fig.12 As shown, the method comprises the following steps:

[0193] Step S1201, the host computer selects the working mode of the ultrasonic diagnostic equipment in response to the user's operation instruction, determines the target transmission voltage corresponding to the working mode according to the selected working mode, and sends the determined target transmission voltage to the controller;

[0194] Step S1202, the controller generates a reference voltage according to the received target transmission voltage, and sends the generated reference voltage to the transmission power supply;

[0195] Step S1203, the transmitting power supply adjusts the transmitting voltage outputted by itself to the target transmitting voltage according to the reference voltage;

[0196] Step S1204, the controller obtains the input voltage input to the transmitting chip in real time;

[0197] Step S1205, the controller detects whether the input voltage is greater than the target emission voltage, if so, executes step S1206, otherwise, executes step S1208;

[0198] Step S1206, the controller calculates the discharge duration according to the input voltage and the target emission voltage, generates a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold, and sends the first control signal to the voltage regulating unit;

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

[0200] Step S1208, the controller detects that the input voltage is equal to the target emission voltage, generates a second control signal, and sends the second control signal to the voltage regulating unit;

[0201] Step S1209: the voltage regulating unit stops working under the control of the second control signal.

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

Claims

1. An ultrasonic diagnostic device, characterized in that: It includes a transmitting power supply, an output capacitor, a transmitting chip, a control unit and a voltage regulating unit, wherein: The first output end of the control unit is electrically connected to the control end of the transmitting power supply, the second output end of the control unit is electrically connected to the control end of the voltage regulating unit, the input end of the control unit, the input end of the voltage regulating unit and the output end of the transmitting power supply are all electrically connected to the input end of the transmitting chip, and the output end of the transmitting power supply is also electrically connected to the output capacitor; The control unit is used to determine a target transmitting voltage according to a working mode of the ultrasonic diagnostic device; adjust the transmitting voltage output by the transmitting power supply to the target transmitting voltage, and obtain the input voltage input to the transmitting chip in real time, and when it is detected that the input voltage is greater than the target transmitting voltage, determine the discharge duration according to the input voltage and the target transmitting voltage, and generate a first control signal according to the magnitude relationship between the discharge duration and a preset duration threshold; The voltage regulating unit is used to adjust the discharge rate of the output capacitor under the control of the first control signal to reduce the input voltage.

2. The device according to claim 1, characterized in that The voltage regulating unit includes a first resistor, a second resistor, a first switch tube and a second switch tube, wherein: The first end of the first resistor serves as the input end of the voltage regulating 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 switch tube respectively; The second end of the second resistor is electrically connected to the first end of the second switch tube; The control end of the first switch tube and the control end of the second switch tube are used together as the control end of the voltage regulating unit, and the second end of the first switch tube and the second end of the second switch tube are both grounded; The voltage regulating unit is specifically used to: under the control of the first control signal, turn off the first switch tube and turn on the second switch tube so that both the first resistor and the second resistor work, or, under the control of the first control signal, turn on the first switch tube and turn off the second switch tube so that the first resistor works.

3. The device according to claim 2, characterized in that The resistance value of the first resistor is greater than the resistance value of the second resistor.

4. The device according to claim 2, characterized in that The control unit is specifically used for: comparing the input voltage with the target emission voltage; If the input voltage is greater than the target emission voltage, the difference between the logarithm of the input voltage and the logarithm of the target emission voltage is calculated, and the product of the difference and the time coefficient is used as the discharge duration; The time coefficient is the product of the total resistance value and the capacitance value of the output capacitor, and the total resistance value is the sum of the resistance value of the first resistor and the resistance value of the second resistor.

5. The device according to claim 2, characterized in that 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 is specifically used for: Comparing the discharge duration with the preset duration threshold; If the discharge duration is not greater than the preset duration threshold, setting the level state of the first control sub-signal to the first level state, and setting the level state of the second control sub-signal to the second level state; 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, and 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; 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.

6. The device according to claim 5, characterized in that The control unit is also used for: When it is detected that the input voltage is equal to the target emission voltage, a second control signal for controlling the voltage regulating unit to stop operating is generated.

7. The device according to claim 6, characterized in that The second control signal includes a third control sub-signal for controlling the first switch tube and a fourth control sub-signal for controlling the second switch tube; The control unit is specifically used for: 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.

8. The device according to any one of claims 1 to 7, characterized in that: Also includes a detection unit; The input end of the detection unit is electrically connected to the input end of the transmitting chip, and the output end of the detection unit is electrically connected to the input end of the control unit; The detection unit is used to detect the input voltage and transmit the detected input voltage to the control unit.

9. A method for controlling the transmitting voltage of an ultrasonic diagnostic device, characterized in that: The ultrasonic diagnostic device comprises a transmitting power supply, an output capacitor, a transmitting chip, a control unit and a voltage regulating unit, and the method comprises: Determine the target transmitting voltage according to the working mode of the ultrasonic diagnostic equipment, adjust the transmitting voltage output by the transmitting power supply to the target transmitting voltage, and obtain the input voltage input to the transmitting chip in real time; When it is detected that the input voltage is greater than the target emission voltage, determining the discharge duration according to the input voltage and the target emission voltage; Generate a first control signal according to a magnitude relationship between the discharge duration and a preset duration threshold; Under the control of the first control signal, the discharge rate of the output capacitor is adjusted to reduce the input voltage.

10. The method according to claim 9, characterized in that The step of determining the discharge duration according to the input voltage and the target emission voltage includes: Calculating the difference between the logarithm of the input voltage and the logarithm of the target emission voltage, and taking the product of the difference and the time coefficient as the discharge duration; The time coefficient is the product of the total resistance value and the capacitance value of the output capacitor, where: The total resistance value is the sum of the resistance value of the first resistor and the resistance value of the second resistor.

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