CN218124342U

CN218124342U - Power supply system and ultrasonic diagnostic equipment

Info

Publication number: CN218124342U
Application number: CN202221670675.3U
Authority: CN
Inventors: 钟小华; 赵德知
Original assignee: Sonoscape Medical Corp
Current assignee: Sonoscape Medical Corp
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-12-23
Anticipated expiration: 2032-06-30

Abstract

The application discloses power supply system and ultrasonic diagnosis equipment, is applied to the power supply field. The monitoring circuit in the scheme can monitor the output voltage of the battery, and control the battery to stop supplying power for the ultrasonic main system for a preset time period when the output voltage is not in a preset range. Therefore, in the application, when the output voltage of the battery is not within the preset range, the battery is controlled to stop supplying power to the ultrasonic main system, and the battery is controlled to continuously stop supplying power to the ultrasonic main system within the preset time period, so that the ultrasonic main system continuously stops working within the preset time period, the situation that the ultrasonic main system is frequently restarted due to the rise of the output voltage when the electric quantity of the battery is insufficient can be avoided, and the safety of the battery and the ultrasonic main system is improved.

Description

Power supply system and ultrasonic diagnostic equipment

Technical Field

The present application relates to the field of power supply, and in particular, to a power supply system and an ultrasonic diagnostic apparatus.

Background

At present, an ultrasound main system is powered by mains supply or a battery, the mains supply or the battery firstly outputs a 5V power supply to a standby power supply end of a main board in the ultrasound main system, the main board in the ultrasound main system is in a standby state at the moment, only a small amount of circuits in the main board work, and power consumption is low. After the mainboard recognizes that the power-on key of the ultrasonic main system is pressed, a power-on signal is output to the power supply module, at the moment, the commercial power or the battery outputs a 12V power to a power supply end in the ultrasonic main system through the power supply module so that the ultrasonic main system works normally, meanwhile, a feedback signal is output to the mainboard, and the normal working mode is started after the mainboard detects the feedback signal.

However, when the battery is used to supply power to the ultrasound main system, if the battery has insufficient power, the voltage at the two ends of the battery will gradually decrease, and when the battery decreases to the power supply voltage (e.g., 12V) of the ultrasound main system, the battery is disconnected from the power supply terminal of the ultrasound main system, the ultrasound main system is abnormally powered down, and then the voltage at the two ends of the battery will slightly increase and may possibly increase to the power supply voltage of the ultrasound main system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power supply system and ultrasonic diagnostic equipment, there is the output voltage of battery to control the battery to stop for the power supply of supersound main system when predetermineeing the scope, and control the battery and continue to stop for the power supply of supersound main system at the time quantum of predetermineeing, make the supersound main system last stop work in the time quantum of predetermineeing, can avoid appearing when battery electric quantity is not enough, because the condition that the supersound main system that output voltage rises back and lead to frequently restarts, improved the security of battery and supersound main system.

In order to solve the above technical problem, the present application provides a power supply system, including:

and the monitoring circuit comprises a first input end and an output end, the first input end is connected with the output end of the battery, the output end is connected with a power supply end of the ultrasonic main system, the monitoring circuit is used for monitoring the output voltage of the battery, and when the output voltage is not within the preset range, the battery is controlled to stop supplying power to the ultrasonic main system and continue for a preset time period.

Preferably, the monitoring circuit includes:

the input end of the sampling circuit is used as the input end of the monitoring circuit and is connected with the output end of the battery, and the sampling circuit is used for sampling the output voltage of the battery to obtain a sampling voltage;

the comparison module comprises a first input end and a second input end, the first input end of the comparison module is connected with the output end of the sampling circuit, the second input end of the comparison module is used for inputting a reference voltage, the comparison module is used for comparing the sampling voltage with the reference voltage, and outputting a first signal and continuing for the preset time period when the sampling voltage is smaller than the reference voltage;

the first switch circuit comprises a first input end and an output end, the first input end of the first switch circuit is connected with the output end of the comparison module, the output end of the first switch circuit is used as the output end of the monitoring circuit and connected with the power supply end of the ultrasonic main system, and the first switch circuit is used for being cut off when receiving the first signal, so that the battery stops outputting the power supply to the power supply end of the ultrasonic main system, and the power supply for the ultrasonic main system is stopped.

Preferably, the comparison module comprises:

a comparator including a first input terminal and a second input terminal, the first input terminal of the comparator being connected to the output terminal of the sampling circuit as the first input terminal of the comparing module, the second input terminal of the comparator being connected to the second input terminal of the comparing module for inputting the reference voltage, the comparator being configured to output a second signal when the sampled voltage is smaller than the reference voltage;

and the input end of the second switch circuit is connected with the output end of the comparator, the output end of the second switch circuit is used as the output end of the comparison module and is connected with the first input end of the first switch circuit, and the second switch circuit is used for converting the second signal into the first signal and continuously outputting the first signal in the preset time period.

Preferably, the comparison module further comprises a sixth resistor and a first diode;

one end of the sixth resistor is connected with the output end of the comparator, the other end of the sixth resistor is connected with the anode of the first diode, and the cathode of the first diode is connected with the second input end of the comparator.

Preferably, the monitoring circuit further comprises:

and the input end of the reference circuit is connected with the output end of the battery, the output end of the reference circuit is connected with the second input end of the comparator, and the reference circuit is used for outputting the reference voltage according to the output voltage of the battery.

Preferably, the reference circuit comprises a first resistor, a second resistor, a third resistor and a first voltage regulator tube;

the first end of the first resistor is used as the input end of the reference circuit and connected with the output end of the battery, the second end of the first resistor is respectively connected with the cathode of the first voltage-regulator tube, the voltage-stabilizing end of the first resistor and the first end of the second resistor, the second end of the second resistor is used as the output end of the reference circuit and respectively connected with the first end of the third resistor and the second input end of the comparator, and the second end of the third resistor is respectively connected with the anode of the first voltage-regulator tube and the ground end of the first voltage-regulator tube.

Preferably, the monitoring circuit further comprises a second input terminal, and the second input terminal is connected with the signal terminal of the ultrasound main system;

the monitoring circuit is further used for controlling the battery to supply power to the ultrasonic main system when the output voltage of the battery is within a preset range and the signal end outputs a starting signal.

Preferably, the power supply terminals of the ultrasound main system comprise a standby power supply terminal and a power supply terminal;

the power supply system further includes:

the power supply conversion module comprises an input end, a first enabling end, a second enabling end, a first output end and a second output end, wherein the input end of the power supply conversion module is connected with the output end of the battery, the first enabling end is connected with the output end of the second switch circuit, the second enabling end is connected with the enabling end of the first switch circuit, the first output end is connected with the standby power supply end of the ultrasonic main system, and the second output end is connected with the power supply end of the ultrasonic main system;

the power supply conversion module is used for outputting a standby power supply to a standby power supply end of the ultrasonic main system through a first output end of the power supply conversion module when a first enabling end of the power supply conversion module does not receive a first signal; and when the second enabling end detects that the first switch circuit is conducted, outputting a power supply to a power supply end of the ultrasonic main system through a second output end of the second enabling end.

Preferably, the first switch circuit further comprises a second input terminal connected to a signal terminal of the ultrasound main system;

the first switch circuit is specifically configured to be turned off when the first input terminal of the first switch circuit receives the first signal or the second input terminal of the first switch circuit does not receive the power-on signal, so that the power conversion module stops outputting a power supply to a power supply terminal of the ultrasound main system through the second output terminal.

Preferably, the second switch circuit comprises a first controllable switch, a second controllable switch, a third controllable switch and a time delay circuit;

the control end of the first controllable switch is connected with the first end of the second controllable switch, the first end of the first controllable switch is connected with the output end of the battery, the second end of the first controllable switch is connected with one end of the delay circuit, the other end of the delay circuit is connected with the control end of the third controllable switch, the first end of the third controllable switch is used as the output end of the second switch circuit and is connected with the first enabling end of the power supply conversion module, the second end of the third controllable switch is respectively connected with the second end of the second controllable switch and the ground end, and the control end of the second controllable switch is used as the input end of the second switch circuit and is connected with the output end of the comparator;

the second controllable switch is used for being switched on when receiving the second signal;

the first controllable switch is used for being conducted after the second controllable switch is conducted;

the third controllable switch is used for being turned on after the first controllable switch is turned on to output the first signal, so that the first enabling end is not enabled, the power supply conversion module stops outputting the standby power supply to the standby power supply end, and the third controllable switch is turned off after the preset time period;

the delay circuit is used for generating the delay of the preset time period after the third controllable switch acts.

Preferably, the delay circuit comprises a first capacitor, a ninth resistor and a tenth resistor;

one end of the first capacitor is connected with the second end of the first controllable switch and the first end of the ninth resistor respectively, the second end of the ninth resistor is connected with the first end of the tenth resistor and the control end of the third controllable switch respectively, and the other end of the first capacitor is connected with the second end of the tenth resistor and the ground end respectively.

Preferably, the first switch circuit comprises an optocoupler, a fourth resistor and a fifth resistor;

the positive pole of diode in the opto-coupler is regarded as first switch circuit's first input end with second switch circuit's output is connected, the negative pole of diode in the opto-coupler is regarded as first switch circuit's second input end with the signal end of supersound main system is connected, the one end of transistor in the opto-coupler is regarded as first switch circuit's output respectively with the second of fourth resistance end, the first end of fifth resistance and the second of power conversion module enables the end and connects, the first end of fourth resistance is connected with the output of battery, the other end of transistor respectively with the second of fifth resistance end, the negative pole of diode and ground connection.

In order to solve the technical problem, the present application further provides an ultrasound diagnostic apparatus, which includes the power supply system described above, wherein the output terminal of the battery is connected to the power supply terminal of the ultrasound main system through the power supply system.

In order to solve the technical problem, the application also provides a power supply system and ultrasonic diagnostic equipment, which are applied to the field of power supply. The monitoring circuit in the scheme can monitor the output voltage of the battery, and control the battery to stop supplying power for the ultrasonic main system for a preset time period when the output voltage is not in a preset range. Therefore, in the application, when the output voltage of the battery is not within the preset range, the battery is controlled to stop supplying power to the ultrasonic main system, and the battery is controlled to continuously stop supplying power to the ultrasonic main system within the preset time period, so that the ultrasonic main system continuously stops working within the preset time period, the situation that the ultrasonic main system is frequently restarted due to the rise of the output voltage when the electric quantity of the battery is insufficient can be avoided, and the safety of the battery and the safety of the ultrasonic main system are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a block diagram of a power supply system provided in the present application;

fig. 2 is a specific block diagram of a power supply system provided in the present application;

fig. 3 is a partial circuit diagram of a power supply system provided in the present application;

fig. 4 is another circuit diagram of a power supply system provided in the present application;

fig. 5 is a block diagram of an ultrasound diagnostic apparatus provided in the present application.

Detailed Description

The core of the application is to provide a power supply system and ultrasonic diagnostic equipment, the battery is controlled to stop supplying power to the ultrasonic main system when the output voltage of the battery is not within a preset range, and the battery is controlled to continuously stop supplying power to the ultrasonic main system within a preset time period, so that the ultrasonic main system continuously stops working within the preset time period, the condition that the ultrasonic main system is frequently restarted due to the rise of the output voltage when the electric quantity of the battery is insufficient can be avoided, and the safety of the battery and the ultrasonic main system is improved.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a block diagram of a power supply system provided in the present application, where the power supply system includes:

and the monitoring circuit 11 comprises a first input end and an output end, the first input end is connected with the output end of the battery, the output end is connected with a power supply end of the ultrasonic main system, and the monitoring circuit 11 is used for monitoring the output voltage of the battery and controlling the battery to stop supplying power to the ultrasonic main system and continue for a preset time period when the output voltage is not within a preset range.

Specifically, when the battery is used for supplying power to the ultrasound main system, the monitoring circuit 11 is arranged in the monitoring system, and the battery does not directly supply power to the ultrasound main system any more, but monitors whether the battery outputs a power supply voltage through the monitoring circuit 11 so as to control whether the battery supplies power to the ultrasound main system.

Specifically, the monitoring circuit in this application detects the output voltage of battery, when the output voltage of battery is not in the predetermined range, judges that the output voltage of battery is unusual, can not normally supply power for supersound main system. At this time, the battery is controlled to stop outputting the power supply voltage, so that the battery stops supplying power to the ultrasound main system. It is further particularly noted that, in the present application, when the output voltage of the battery is not within the preset range, the specific implementation manner of controlling the battery to stop supplying power to the ultrasound main system is to control the battery to stop supplying power to the ultrasound main system for a preset time period, so that under the condition that the battery power is insufficient, even if the output voltage of the battery has a small amplitude or a large amplitude when the ultrasound main system is powered down, the battery will not be supplied with power to the ultrasound main system within the preset time period, the repeated restart of the ultrasound main system can be avoided, the probability of the over-discharge of the battery caused by the continuous restart of the ultrasound main system is also reduced, and the service life and the reliability of the battery are also increased.

In addition, in an embodiment, the above-described output voltage is not within the preset range, which means that the output voltage is smaller than the reference voltage.

In summary, according to the power supply system provided by the application, when the output voltage of the battery is no longer within the preset range or the ultrasound main system is not allowed to be started, the battery is directly controlled to stop supplying power to the ultrasound main system, so that the ultrasound main system stops working, the situation that the ultrasound main system is frequently restarted can be prevented, and the safety of the battery and the ultrasound main system is improved.

As a preferred embodiment, the monitoring circuit 11 further includes a second input terminal, and the second input terminal is connected to the signal terminal of the ultrasound main system;

the monitoring circuit 11 is further configured to control the battery to supply power to the ultrasound main system when the output voltage of the battery is within a preset range and the signal terminal outputs the power-ON signal PS _ ON.

Specifically, the monitoring circuit in this application can detect the output voltage of the battery, and can also detect the signal output by the signal terminal of the ultrasound main system, and when the signal terminal outputs the power-ON signal PS _ ON and the output voltage of the battery is within a preset range, the battery is controlled to supply power to the ultrasound main system. When any one of the two conditions monitored by the monitoring circuit does not meet the condition, the battery is controlled to stop supplying power to the ultrasonic main system, specifically, when the signal end does not output the starting signal PS _ ON, the battery is directly controlled to stop supplying power to the ultrasonic main system, and when the output voltage of the battery is not within a preset range, the battery is controlled to stop supplying power to the ultrasonic main system and continues for a preset time period.

The signal terminal of the ultrasound main system in the present application may be, but is not limited to, a power-ON signal PS _ ON output by a signal terminal of a main board in the ultrasound main system. Specifically, a control panel of the ultrasound main system may be but is not limited to be provided with a power-ON key, when the power-ON key is not pressed, the main board is in a standby state (the main board is powered by a 5V power supply), after the power-ON key is pressed, the main board detects that the power-ON key is pressed, at this time, a signal end of the main board outputs a power-ON signal PS _ ON, and at this time, if the output voltage of the battery is within a preset range, the battery starts to provide a power supply voltage (12V) for the ultrasound main system, and the ultrasound main system is started. Similarly, when the monitoring circuit does not monitor the power-ON signal PS _ ON, even if the output voltage of the battery is within the preset range, the ultrasound main system is not started, thereby improving the reliability of power supply of the ultrasound main system.

On the basis of the above-described embodiment:

as a preferred embodiment, the monitoring circuit 11 includes:

the input end of the sampling circuit 21 is used as the input end of the monitoring circuit 11 and is connected with the output end of the battery, and the sampling circuit 21 is used for sampling the output voltage of the battery to obtain a sampling voltage;

the comparison module comprises a first input end and a second input end, the first input end of the comparison module is connected with the output end of the sampling circuit, the second input end of the comparison module is used for inputting reference voltage, the comparison module is used for comparing the sampling voltage with the reference voltage and outputting a first signal for a preset time period when the sampling voltage is smaller than the reference voltage;

the first switch circuit 25 includes a first input end and an output end, the first input end of the first switch circuit 25 is connected to the output end of the comparison module, the output end of the first switch circuit 25 is used as the output end of the monitoring circuit 11 and connected to the power end of the ultrasound main system, and the first switch circuit 25 is used for being turned off when receiving the first signal, so that the battery stops outputting the power to the power end of the ultrasound main system, and the power supply to the ultrasound main system is stopped.

Wherein the input terminal of the sampling circuit 21 constitutes the input terminal of the entire monitoring circuit 11, and the output terminal of the first switching circuit 25 constitutes the output terminal of the entire monitoring circuit 11.

Further, the present embodiment aims to limit the specific implementation manner of the monitoring circuit 11, and since the output voltage of the battery needs to be monitored, a sampling circuit 21 is provided in the present embodiment to sample the output voltage of the battery to obtain a sampled voltage. Further, since it is necessary to determine whether the output voltage of the battery is within a preset range in the present application, a comparison module is further provided in this embodiment, and the comparison module compares the sampling voltage output by the sampling circuit 21 with the reference voltage, and a specific implementation manner of determining whether the output voltage of the battery is within the preset range at this time is to determine whether the sampling voltage is not less than the reference voltage, specifically, when the sampling voltage is less than the reference voltage, it is determined that the output voltage of the battery is not within the preset range, and at this time, a first signal is output to the first switch circuit 25, and the first signal is continuously output within a preset time period, so that the first switch circuit 25 controls the battery to stop supplying power to the ultrasonic main system based ON the first signal and the power-ON signal PS _ ON, so that the ultrasonic main system is powered off.

It should be noted that, the specific implementation of the first switch circuit 25 and the comparison module may be a chip, a single chip, or other implementations, and the present application is not limited thereto.

Referring to fig. 3, fig. 3 is a partial circuit diagram of a power supply system provided in the present application.

As a preferred embodiment, the sampling circuit 21 includes a seventh resistor R7 and an eighth resistor R8;

a first end of the seventh resistor R7 is used as an input end of the sampling circuit 21 and connected to an output end of the battery, a second end of the seventh resistor R7 is connected to a first end of the eighth resistor R8, a second end of the eighth resistor R8 is grounded, and a second end of the seventh resistor R7 is used as an output end of the sampling circuit 21.

Specifically, the sampling circuit 21 described above may be, but is not limited to, a voltage dividing circuit composed of resistors, and further, the seventh resistor R7 may be, but is not limited to, include two resistors, and at this time, it is more convenient to adjust the resistance of the seventh resistor R7 through adjustment of the resistances of the two resistors, for example, in an actual application process, if the model (resistance type) of the resistor is limited, at this time, the adjustment of the resistance of the seventh resistor R7 is more easily achieved through the two resistors.

As a preferred embodiment, the monitoring circuit 11 further includes:

a reference circuit 22 having an input terminal connected to the output terminal of the battery and an output terminal connected to the second terminal of the comparator 23, the reference circuit 22 being configured to output a reference voltage according to the output voltage of the battery.

Further, the reference voltage mentioned above may be, but is not limited to, output by the reference circuit 22, and the reference voltage output by the reference circuit 22 is set according to a user's requirement, that is, the reference voltage output by the reference circuit 22 in this application may be adjusted according to a user's requirement, specifically, assuming that the power supply voltage of the ultrasound main system in this application is 12V, the reference voltage may be, but is not limited to, 12V or 13.5V slightly higher than 12V, and the like, and this application is not limited in detail herein.

As a preferred embodiment, the reference circuit 22 includes a first resistor R1, a second resistor R2, a third resistor R3, and a first regulator tube U1;

the first end of the first resistor R1 is used as the input end of the reference circuit 22 and connected with the output end of the battery, the second end of the first resistor R1 is respectively connected with the cathode and the voltage stabilizing end of the first voltage-regulator tube U1 and the first end of the second resistor R2, the second end of the second resistor R2 is used as the output end of the reference circuit 22 and is respectively connected with the first end of the third resistor R3 and the second end of the comparison module, and the second end of the third resistor R3 is respectively connected with the anode of the first voltage-regulator tube U1 and the ground end.

Further, the reference circuit 22 may be but not limited to a 431 voltage regulator circuit, and specifically, the 431 voltage regulator circuit includes a first resistor R1, a second resistor R2, a third resistor R3, and a first voltage regulator U1, and the voltage regulator circuit outputs a stable voltage to the second end of the second resistor R2 through voltage division of resistors and voltage stabilization of the voltage regulator tube, where the voltage regulator tube has a voltage stabilization function, so that compared with the reference voltage output by a circuit that only uses voltage division of resistors, the stability of the reference voltage output in the present embodiment is higher, and thus the accuracy of determining the output voltage of the battery in the present embodiment is also improved.

Of course, the specific implementation of the reference circuit 22 may be other implementations, and the present application is not limited thereto.

It can be seen that, when the monitoring circuit 11 includes the sampling circuit 21, the comparing module and the first switch circuit 25, the functions of the monitoring circuit 11 can be implemented, and the implementation manner is simple and reliable.

As a preferred embodiment, the comparison module comprises:

a comparator 23 (U2A in fig. 3) including a first input terminal and a second input terminal, the first input terminal of the comparator 23 being connected to the output terminal of the sampling circuit 21 as a first input terminal of a comparison module, the second input terminal of the comparator 23 being a second input terminal of the comparison module to input the reference voltage, the comparator 23 being configured to output a second signal when the sampling voltage is smaller than the reference voltage;

and an input end of the second switch circuit 24 is connected to the output end of the comparator 23, an output end of the second switch circuit is connected to the first end of the first switch circuit 25 as an output end of the comparison module, and the second switch circuit 24 is configured to convert the second signal into the first signal and continuously output the first signal within the preset time period.

Specifically, the present embodiment is intended to define a specific implementation manner of the comparison module, specifically, the comparison module may include, but is not limited to, a comparator 23 and a second switch circuit 24, where the comparator 23 is configured to output a second signal (the second signal may be, but is not limited to, a level signal) according to a magnitude between voltages of two input terminals, the second switch circuit 24 specifically determines whether to output the first signal according to the signal output by the comparator 23, and specifically, when the comparator 23 outputs the second signal, the second switch circuit 24 converts the second signal into the first signal and continuously outputs the first signal within a preset time.

Specifically, when the voltage of the input positive terminal of the comparator 23 is greater than the voltage of the input negative terminal, the comparator 23 outputs a high level; when the voltage of the input negative terminal of the comparator 23 is smaller than the voltage of the input negative terminal, the comparator 23 outputs a low level. When it is not limited whether the first terminal of the comparator 23 is a positive terminal or a negative terminal, the second switch circuit 24 may convert the level signal output from the comparator 23 into the first signal.

In an embodiment, the first terminal of the comparator 23 is an input negative terminal, and accordingly, the second signal is at a high level, that is, the second switch circuit 24 is specifically configured to convert the high level into the first signal and continuously output the first signal for a preset time period, where the first signal may be, but is not limited to, a level signal.

In summary, the comparator 23 and the second switch circuit 24 in this embodiment can implement the function of the comparison module, and the implementation manner is simple and reliable.

As a preferred embodiment, the comparing module further comprises a sixth resistor R6 and a first diode;

one end of the sixth resistor R6 is connected to the output terminal of the comparator 23, the other end of the sixth resistor R6 is connected to the anode of the first diode, and the cathode of the first diode is connected to the second terminal of the comparator 23.

Further, the comparison module in the present application is further provided with a feedback module, specifically, the feedback module includes a sixth resistor R6 and a first diode, and feeds back the output voltage of the comparator 23 to the second end of the comparator 23. Since the second terminal of the comparator 23 is connected to the output terminal of the reference circuit 22, the feedback module is configured to feed back the second signal output by the comparator 23 to the input terminal of the comparator 23, so as to increase the value of the reference voltage input by the second terminal of the comparator 23, and this increased portion corresponds to the hysteresis voltage, so that the comparator 23 can be prevented from always operating in a state of alternating high and low levels during the process of the output voltage of the battery rising back.

Specifically, on the basis that the first terminal of the comparator 23 is the input negative terminal and the second terminal of the comparator 23 is the input positive terminal, the second signal is at a high level, and the high level is fed back to the input positive terminal of the comparator 23, so that the voltage of the input positive terminal of the comparator 23 can be increased to some extent, and thus when the voltage between the input positive terminal and the input negative terminal of the comparator 23 is compared, the comparator 23 can be prevented from always operating in a state of alternating high and low levels.

As a preferred embodiment, the power supply terminals of the ultrasound main system comprise a standby power supply terminal and a power supply terminal;

the power supply system further includes:

a power conversion module 26, which includes an input terminal, a first enable terminal, a second enable terminal, a first output terminal and a second output terminal, wherein the input terminal of the power conversion module 26 is connected to the output terminal of the battery, the first enable terminal is connected to the output terminal of the second switch circuit 24, the second enable terminal is connected to the enable terminal of the first switch circuit 25, the first output terminal of the power conversion module 26 is connected to the standby power terminal of the ultrasound main system, and the second output terminal of the power conversion module 26 is connected to the power supply terminal of the ultrasound main system;

the power conversion module 26 is configured to output a standby power to a standby power end of the ultrasound main system through a first output end of the power conversion module when the first enable end of the power conversion module does not receive the first signal; and when the second enabling end detects that the first switch circuit 25 is conducted, the second enabling end outputs the power supply to the power supply end of the ultrasonic main system through the second output end of the second enabling end.

Specifically, when the battery provides power for the ultrasound main system in this application, two power supplies are specifically provided, which are a standby power supply and a power supply (the standby power supply may be 5V, and the power supply may be 12V), respectively, at this time, a power conversion module 26 is provided in this application, and is used for converting the output voltage of the battery, so as to provide the standby power supply (5V) and the power supply (12V) for the ultrasound main system. At this time, the specific implementation manner of controlling whether the battery supplies power to the ultrasound main system is as follows: the first enabling terminal of the power conversion module 26 is controlled to control whether the battery provides the standby power for the standby power terminal of the ultrasound main system, and the second enabling terminal of the power conversion module 26 is controlled to control whether the battery provides the power for the power supply terminal of the ultrasound main system.

Specifically, the power conversion module 26 outputs the standby power to the standby power end through the first output end when the first enable end does not receive the first signal output by the second switch circuit 24, and outputs the power to the power end through the second output end when the second enable end detects that the first switch circuit 25 is turned on. Therefore, whether the power conversion module 26 outputs the standby power can be controlled by controlling whether the second switch circuit 24 outputs the first signal, and whether the power conversion module 26 outputs the power supply can be controlled by controlling whether the first switch circuit is turned on.

As a preferred embodiment, the first switch circuit 25 further includes a second input terminal connected to a signal terminal of the ultrasound main system;

the first switch circuit 25 is specifically configured to turn off when the first input terminal of the first switch circuit receives the first signal or the second input terminal of the first switch circuit does not receive the power-ON signal PS _ ON, so that the power conversion module 26 stops outputting the power supply (12V) to the power supply terminal of the ultrasound main system through the second output terminal.

Further, the second input terminal of the first switch circuit 25 is connected to a signal terminal of the ultrasound main system, and the first switch circuit 25 controls the battery to supply power to the ultrasound main system only when the first input terminal of the first switch circuit 25 does not receive the first signal output by the second switch circuit 24 and the second output terminal of the first switch circuit receives the power-ON signal PS _ ON output by the signal terminal of the ultrasound main system. When the first input terminal receives the first signal output by the second switch circuit 24 or the second input terminal does not receive the power-ON signal PS _ ON, the battery is controlled to stop supplying power to the ultrasound main system.

Therefore, the ultrasound main system in the application can input the power supply for the power supply end only when the power supply end has the input of the standby power supply and if the startup signal is detected.

In an embodiment, if the sampling voltage is less than the reference voltage (i.e. the output voltage of the battery is not within the predetermined range), the second switch circuit outputs the first signal, and at this time, the first enable terminal of the power conversion module 26 receives the first signal, the first input terminal of the first switch circuit 25 also receives the first signal, and the first switch circuit 25 is in the off state. At this time, the power conversion module 26 does not output the standby power to the standby power end of the ultrasound main system, nor outputs the power to the power end of the ultrasound main system, so as to power down the ultrasound main system. If the sampling voltage is not less than the reference voltage (that is, the output voltage of the battery is within the preset range), the second switch circuit does not output the first signal, at this time, the first enable terminal of the power conversion module 26 does not receive the first signal, the first input terminal of the first switch circuit 25 does not receive the first signal, the first switch circuit 25 is in a conducting state, at this time, the power conversion module 26 outputs the standby power to the standby power terminal of the ultrasound main system, and simultaneously outputs the power supply to the power supply terminal of the ultrasound main system, so that the ultrasound main system is powered on.

As a preferred embodiment, the ultrasound main system second switch circuit 24 includes a first controllable switch Q1, a second controllable switch Q2, a third controllable switch Q3 and a delay circuit;

the control end of the first controllable switch Q1 is connected with the first end of the second controllable switch Q2, the first end of the first controllable switch Q1 is connected with the output end of the battery, the second end of the first controllable switch Q1 is connected with one end of the delay circuit, the other end of the delay circuit is connected with the control end of the third controllable switch Q3, the first end of the third controllable switch Q3 is used as the output end of the second switch circuit 24 and is connected with the first enabling end of the power conversion module 26, the second end of the third controllable switch Q3 is respectively connected with the second end of the second controllable switch Q2 and the ground end, and the control end of the second controllable switch Q2 is used as the input end of the second switch circuit 24 and is connected with the output end of the comparator 23;

the second controllable switch Q2 is used for being conducted when receiving a second signal;

the first controllable switch Q1 is used for being conducted after the second controllable switch Q2 is conducted;

the third controllable switch Q3 is configured to be turned on after the first controllable switch Q1 is turned on, so as to output the first signal, so that the first enable terminal is not enabled, and the power conversion module 26 stops outputting the standby power to the standby power terminal, and is turned off after a preset time period;

the delay circuit is used for generating the delay of a preset time period after the third controllable switch Q3 acts.

Specifically, when the output voltage of the battery does not meet the requirement, that is, the sampling voltage is less than the reference voltage, the comparator 23 outputs the second signal, and at this time, the first controllable switch Q1, the second controllable switch Q2, and the third controllable switch Q3 in the second switch circuit 24 output the first signal based on the second signal, so that the first enable terminal is disabled (the enable signal of the first enable terminal is 5vsb _enin fig. 3, and at this time, the 5vsb _enin fig. 3 is a low level), so that the power supply conversion module 26 stops outputting the standby power to the standby power supply terminal of the ultrasound main system, and the delay circuit makes the first enable terminal be disabled continuously for a preset time period, and at this time, the standby power supply terminal has no standby power input continuously for the preset time period. Since the second switch circuit 24 continuously outputs the first signal in the preset time period, no matter whether the first switch circuit 25 receives the power-ON signal PS _ ON, the first switch circuit 25 is not turned ON, that is, the power conversion module 26 does not provide the power supply for the power supply terminal of the ultrasound main system through the second output terminal in the preset time period (the enable signal of the second enable terminal is 12vsb _ en in fig. 4, and at this time, 12vsb _ en in fig. 4 is a high level).

Specifically, when the output voltage of the battery meets the requirement, that is, the sampling voltage is not less than the reference voltage, the comparator 23 outputs a signal opposite to the second signal, that is, does not output the second signal, at this time, the first controllable switch Q1, the second controllable switch Q2, and the third controllable switch Q3 in the second switch circuit 24 output a signal opposite to the first signal, that is, do not output the first signal, so that the first enable end of the power conversion module 26 is enabled (at this time, 5vsb _enin fig. 3 is at a high level), at this time, the power conversion module 26 outputs the standby power to the standby power end of the ultrasound main system through the first output end, at this time, if the first switch circuit 25 further receives the power ON signal PS _ ON, the first switch circuit 25 is turned ON, and the power conversion module 26 outputs the power supply to the power supply end of the ultrasound main system through its second output end.

In a specific embodiment, if the signal terminal described above is a signal terminal of a motherboard in the ultrasound main system, the standby power terminal here may be a standby power terminal of the motherboard, and similarly, the first output terminal of the power conversion module 26 is connected to the standby power terminal of the motherboard, at this time, only when the standby power terminal of the motherboard is input with the standby power terminal of the motherboard, the motherboard can be in a standby state, and at this time, a small number of circuits in the motherboard operate, and can detect whether the power-on key is pressed down. Specifically, when the power-ON key is pressed, the motherboard outputs a power-ON signal PS _ ON through its own signal terminal, and at this time, the first switch circuit 25 receives the power-ON signal PS _ ON, and the first switch circuit 25 is turned ON, so that the second enable terminal of the power conversion module 26 is enabled (at this time, 12vsb_en in fig. 4 is at a low level), and the power supply is output through the second output terminal to supply power to the ultrasound main system.

In one embodiment, the first controllable switch Q1 is PMOS, the second controllable switch Q2 is NMOS, and the third controllable switch Q3 is NMOS, when the second signal outputted from the comparator 23 is high. The specific workflow of the comparison module is as follows: when the output voltage of the battery does not meet the requirement, that is, the sampling voltage is less than the reference voltage, the comparator 23 outputs a high level, at this time, the control terminal of Q2 is a high level, Q2 is turned on, at this time, the control terminal of Q1 is pulled down, Q1 is turned on, at this time, the control terminal of Q3 is a high level, Q3 is turned on, so that the first enable terminal connected to the first terminal of Q3 is pulled down (that is, 5vsb \ u en in fig. 3 is a low level), and the delay circuit makes the first enable terminal connected to the first terminal of Q3 continuously pulled down within a preset time period, that is, the first enable terminal is not enabled continuously within the preset time period, so that the standby power supply terminal does not have standby power supply input continuously within the preset time period.

In summary, the connection manner of the two enable terminals of the power conversion module 26 and the two switch circuits can control whether the battery supplies power to the ultrasound main system, and the reliability is high.

As a preferred embodiment, the delay circuit includes a first capacitor C1, a ninth resistor R9, and a tenth resistor R10;

one end of the first capacitor C1 is connected to the second end of the first controllable switch Q1 and the first end of the ninth resistor R9, the second end of the ninth resistor R9 is connected to the first end of the tenth resistor R10 and the control end of the third controllable switch Q3, and the other end of the first capacitor C1 is connected to the second end of the tenth resistor R10 and the ground.

Further, after the control terminal Q3 is turned off, the first enable terminal is at a low level, but the first enable terminal is not continuously at the low level all the time, at this time, the standby power terminal of the ultrasonic power supply has no standby power input for a short time, and then has a standby power input again soon. When the ultrasonic main system is abnormally powered down, the ultrasonic main system records and stores fault information of the abnormal power down, if the fault information is not cleared, the fault information is still recorded in the ultrasonic main system after the ultrasonic main system is powered up again, the ultrasonic main system is considered to be still in a power supply abnormal state, at the moment, alarm information or other protection actions (such as controlling the ultrasonic main system to be forcibly powered down) corresponding to the fault information can be continuously output, and normal use is affected.

The current processing method in the prior art is as follows: after the power failure of the ultrasonic main system, the standby power supply of the ultrasonic main system is pulled out manually for a period of time, fault information can be cleared at the moment, the ultrasonic main system can normally work after being normally powered on, but the realization mode needs manual operation, and the mode is not convenient.

In the application, in order to avoid that fault information is not cleared after the ultrasonic main system is abnormally powered off, and the situation that the ultrasonic main system cannot be started up can also exist after the ultrasonic main system is normally powered on, a delay circuit is arranged, specifically, the delay circuit is a charging and discharging loop, and the charging and discharging loop comprises a first capacitor C1, a ninth resistor R9 and a tenth resistor R10. The specific working flow of the charge and discharge loop is as follows: after Q1 is conducted, the output voltage of the battery charges the first capacitor C1, after the first capacitor C1 is charged to reach the opening threshold of Q3, Q3 is conducted, and after Q3 is conducted, the first enabling end is pulled down to enable the first enabling end not to be enabled. Then the first capacitor C1 starts to discharge, in the discharging process, after the turn-off threshold of Q3 is reached, Q3 is cut off, and after Q3 is cut off, the first enable terminal is pulled high to start enabling. The discharge time of the discharge loop is the time when the standby power supply end of the main ultrasonic system has no standby power supply input, and the time can be determined by adjusting parameters of the first capacitor C1, the ninth resistor R9 and the tenth resistor R10.

Referring to fig. 4, fig. 4 is a circuit diagram of another part of a power supply system provided in the present application.

As a preferred embodiment, the first switch circuit 25 includes an optocoupler U3, a fourth resistor R4, and a fifth resistor R5;

the anode of the diode in the optical coupler U3 is connected with a standby power supply end as the first input end of the first switch circuit 25, the cathode of the diode in the optical coupler U3 is connected with a signal end of the ultrasonic main system as the second input end of the first switch circuit 25, one end of the transistor in the optical coupler U3 is connected with the second end of the fourth resistor R4, the first end of the fifth resistor R5 and the second enabling end of the power supply conversion module 26 as the output end of the first switch circuit 25, the first end of the fourth resistor R4 is connected with the input end of the battery, and the other end of the transistor and the second end of the fifth resistor R5 are connected with the cathode of the diode and the ground end respectively.

Further, this embodiment aims to limit a specific implementation manner of the first switch circuit 25, specifically, when the power-ON signal PS _ ON is a low-level signal, if the first input end of the first switch circuit 25 does not have a first signal input, it indicates that the standby power supply end of the ultrasound main system has a standby power supply input, at this time, a diode and a transistor in the optocoupler U3 are turned ON, at this time, the second end of the fourth resistor R4 is pulled down to a low level, the second enable end of the power conversion module 26 is a low level, it is determined that the second enable end is enabled, and the power conversion module 26 outputs the power supply to the power supply end to supply power to the ultrasound main system. Similarly, when a first signal is input at the first input end of the first switch circuit 25, the first input end is at a low level, the optocoupler U3 is not turned ON, or the optocoupler U3 is not turned ON when a low-level power-ON signal PS _ ON is not received, in both cases, the second end of the fourth resistor R4 is pulled high, it is determined that the second enable end is not enabled at this time, and the power conversion module 26 does not output a power supply to the power supply end of the ultrasound main system.

Of course, the above is only one specific implementation manner listed in the embodiment, and other implementation manners are also possible, and the present application is not limited herein.

Further, as a preferred embodiment, the reference circuit 22 further includes:

one end of the second capacitor C2 is connected with the second end of the second resistor R2, and the other end of the second capacitor C2 is grounded and used for filtering noise waves at the first end of the fourth resistor R4.

As a preferred embodiment, the sampling circuit 21 further includes:

one end of the third capacitor C3 is connected with the first end of the eighth resistor R8, and the other end of the third capacitor C3 is grounded and used for filtering noise waves at the first end of the eighth resistor R8.

As a preferred embodiment, the comparing module further includes a first voltage dividing circuit, where the first voltage dividing circuit includes an eleventh resistor R11, a twelfth resistor R12, and a fourth capacitor C4;

one end of the eleventh resistor R11 is connected to the output end of the comparator 23, the other end of the eleventh resistor R11 is connected to one end of the twelfth resistor R12, one end of the fourth capacitor C4 and the control end of the second controllable switch Q2, respectively, and the other end of the eleventh resistor R11 is connected to the other end of the twelfth resistor R12 and the ground.

The first voltage dividing circuit is used for dividing the output voltage of the battery when the output voltage of the battery is large so as to prevent the first controllable switch Q1 from being damaged due to the fact that the voltage connected to the first controllable switch Q1 is too large.

As a preferred embodiment, the comparing module further includes a second voltage dividing circuit, where the second voltage dividing circuit includes a thirteenth resistor R13, a fourteenth resistor R14, and a fifth capacitor C5;

one end of a thirteenth resistor R13 is connected to the output end of the battery, one end of the fifth capacitor C5 and the first end of the first controllable switch Q1, the other end of the thirteenth resistor R13 is connected to the other end of the fifth capacitor C5, the control end of the first controllable switch Q1 and one end of a fourteenth resistor R14, and the other end of the fourteenth resistor R14 is connected to the first end of the second controllable switch Q2.

Similarly, the second voltage dividing circuit is configured to divide the voltage of the level signal output by the comparator 23 when the voltage is large, so as to prevent the second controllable switch Q2 from being damaged due to an excessive voltage applied to the second controllable switch Q2.

As a preferred embodiment, the first switch circuit 25 further includes:

and the sixth capacitor C6 is used for filtering clutter input from the signal end of the ultrasonic main system.

As a preferred embodiment, the first switch circuit 25 further includes:

and the seventh capacitor C7 is connected with the enabling end of the power supply at one end and grounded at the other end, and is used for filtering clutter at the enabling end of the power supply and ensuring the reliability of the enabling end of the power supply.

As a preferred embodiment, the monitoring circuit 11 further includes a fifteenth resistor R15, a second voltage regulator D2, and an eighth capacitor;

one end of a fifteenth resistor R15 is connected to the output end of the battery, the other end of the fifteenth resistor R15 is connected to the power supply terminal of the comparator 23, the cathode of the second voltage regulator D2, and one end of an eighth capacitor, and the other end of the eighth capacitor is connected to the anode of the second voltage regulator D2 and the ground terminal.

Further, the present embodiment is intended to limit a specific implementation manner of providing power for the comparator 23 in the comparing module, and specifically, the output voltage of the battery may be adjusted through the fifteenth resistor R15 to obtain the power VCC for the comparator 23.

Of course, other implementations are possible, and the present application is not limited thereto.

Referring to fig. 5, fig. 5 is a block diagram of an ultrasound diagnostic apparatus provided in the present application, the apparatus includes the above power supply system, and an output terminal of the battery is connected to a power supply terminal of the ultrasound main system through the power supply system.

When the output voltage of the battery in the ultrasound diagnostic apparatus is within the preset range, the battery can output 5V and/or 12V power to supply power to each module in the ultrasound main system (the ultrasound main system mainly includes an ultrasound front-end module and an ultrasound rear-end module, and certainly may also include control devices such as an input device and an output device, which are not limited herein), otherwise, the battery does not supply power to the ultrasound main system. For other descriptions of the ultrasonic diagnostic apparatus, please refer to the above embodiments, which are not described herein again.

It should also be noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power supply system, comprising:

the monitoring circuit comprises a first input end and an output end, the first input end is connected with the output end of the battery, the output end is connected with a power supply end of the ultrasonic main system, the monitoring circuit is used for monitoring the output voltage of the battery, and when the output voltage is not within a preset range, the battery is controlled to stop supplying power to the ultrasonic main system and continue for a preset time period.

2. The power supply system of claim 1 wherein said monitoring circuit comprises:

the input end of the sampling circuit is used as the first input end of the monitoring circuit and is connected with the output end of the battery, and the sampling circuit is used for sampling the output voltage of the battery to obtain a sampling voltage;

3. The power supply system of claim 2 wherein said comparison module comprises:

a comparator including a first input terminal and a second input terminal, the first input terminal of the comparator being connected to the output terminal of the sampling circuit as the first input terminal of the comparing module, the second input terminal of the comparator being used as the second input terminal of the comparing module to input the reference voltage, the comparator being configured to output a second signal when the sampling voltage is smaller than the reference voltage;

4. The power supply system of claim 3 wherein the comparison module further comprises a sixth resistor and a first diode;

5. The power supply system of claim 3 wherein said monitoring circuit further comprises:

6. The power supply system of claim 5 wherein said reference circuit comprises a first resistor, a second resistor, a third resistor, and a first voltage regulator;

the first end of the first resistor is used as the input end of the reference circuit and connected with the output end of the battery, the second end of the first resistor is respectively connected with the cathode of the first voltage-stabilizing tube, the voltage-stabilizing end of the first resistor and the first end of the second resistor, the second end of the second resistor is used as the output end of the reference circuit and respectively connected with the first end of the third resistor and the second input end of the comparator, and the second end of the third resistor is respectively connected with the anode of the first voltage-stabilizing tube and the ground end of the first voltage-stabilizing tube.

7. The power supply system of claim 3 wherein said monitoring circuit further comprises a second input terminal, and wherein said second input terminal is connected to a signal terminal of said ultrasound host system;

8. The power supply system according to any one of claims 3 to 7, wherein the power supply terminals of the ultrasound host system include a standby power supply terminal and a power supply terminal;

the power supply system further includes:

the power supply conversion module comprises an input end, a first enabling end, a second enabling end, a first output end and a second output end, wherein the input end of the power supply conversion module is connected with the output end of the battery, the first enabling end is connected with the output end of the second switch circuit, the second enabling end is connected with the enabling end of the first switch circuit, the first output end of the power supply conversion module is connected with a standby power supply end of the ultrasonic main system, and the second output end of the power supply conversion module is connected with a power supply end of the ultrasonic main system;

9. The power supply system of claim 8 wherein said first switching circuit further comprises a second input terminal connected to a signal terminal of said ultrasound master system;

the first switch circuit is specifically configured to be turned off when the first input terminal of the first switch circuit receives the first signal or the second input terminal of the first switch circuit does not receive the power-on signal, so that the power conversion module stops outputting the power supply to the power supply terminal of the ultrasound main system through the second output terminal.

10. The power supply system of claim 9 wherein the second switching circuit comprises a first controllable switch, a second controllable switch, a third controllable switch, and a delay circuit;

11. The power supply system of claim 10 wherein said delay circuit comprises a first capacitor, a ninth resistor, and a tenth resistor;

one end of the first capacitor is connected to the second end of the first controllable switch and the first end of the ninth resistor, the second end of the ninth resistor is connected to the first end of the tenth resistor and the control end of the third controllable switch, and the other end of the first capacitor is connected to the second end of the tenth resistor and the ground.

12. The power supply system of claim 9 wherein said first switching circuit comprises an optocoupler, a fourth resistor, and a fifth resistor;

13. An ultrasonic diagnostic apparatus comprising a battery, an ultrasonic main system, and the power supply system according to any one of claims 1 to 12, wherein an output terminal of the battery is connected to a power supply terminal of the ultrasonic main system through the power supply system.