Ultrasonic imaging system and its power supply method, ultrasonic imaging device and its power supply device

Abstract

The present application discloses an ultrasonic imaging system and its power supply method, an ultrasonic imaging device and its power supply device. The ultrasonic imaging device includes a load and a host interface provided with a magnetic member, and the power supply device supplies power to the ultrasonic imaging device by connecting to the host interface. The power supply device includes: a line-side interface provided with a magnetic member, which is used for magnetic adsorption with the host interface to connect the line-side interface to the host interface; a power supply module for supplying electrical energy to the line-side interface; a first control switch connected to the power supply module and the line-side interface; a line-side control circuit for detecting a device signal output by the line-side interface, and when the detected device signal is a characteristic signal representing the ultrasonic imaging device, making the first control switch conduct to connect the line-side interface and the power supply module to supply power to the host interface. By connecting the power supply device and the ultrasonic imaging device in a magnetic adsorption manner, it is possible to avoid large temperature rises and abnormal discharge arcing caused by large impedance at the moment of interface contact, and extend the service life.

Description

Technical Field

[0001] This application relates to the technical field of power supply for ultrasonic imaging devices, and particularly to an ultrasonic imaging system and its power supply method, an ultrasonic imaging device and its power supply device. Background Art

[0002] Ultrasonic imaging devices, such as portable ultrasonic imaging devices, usually use an adapter for power supply. The power cord of the adapter is connected to the ultrasonic imaging device through a pluggable connector. The plugging force of the pluggable connector is large, resulting in inconvenient plugging and unplugging between the adapter and the ultrasonic imaging device. Summary of the Invention

[0003] In a first aspect, this application provides an ultrasonic imaging system, including an ultrasonic imaging device and a power supply device; the ultrasonic imaging device includes a load and a host interface provided with a second magnetic member, and the power supply device supplies power to the ultrasonic imaging device by connecting to the host interface.

[0004] The power supply device includes:

[0005] A line-side interface provided with a first magnetic member, and the first magnetic member is used for magnetic adsorption with the host interface to connect the line-side interface to the host interface;

[0006] A power supply module for supplying electrical energy to the line-side interface;

[0007] A first control switch connected to the power supply module and the line-side interface, and used for controllably switching between a conducting state and a disconnecting state to connect or disconnect the power supply module and the line-side interface;

[0008] A line-side control circuit is respectively signal-connected to the line-side interface and the first control switch, and is used for detecting a device signal output by the line-side interface, and when detecting that the device signal is a characteristic signal representing the ultrasonic imaging device, sending a first control signal to the first control switch to make the first control switch conduct, so as to connect the line-side interface and the power supply module and supply power to the host interface.

[0009] In a second aspect, this application provides a power supply device for an ultrasonic imaging device, and the power supply device includes:

[0010] A line-side interface provided with a first magnetic member, and the first magnetic member is used for magnetic adsorption with the host interface of the ultrasonic imaging device to connect the line-side interface to the host interface;

[0011] A power supply module for supplying electrical energy to the line-side interface;

[0012] A first control switch, which is connected to the power supply module and the line-side interface, and is used to controllably switch between the on and off states so as to connect or disconnect the power supply module and the line-side interface;

[0013] A line-side control circuit, which is respectively signal-connected to the line-side interface and the first control switch, and is used to detect whether the line-side interface is connected to the host interface of the ultrasonic imaging device; if it is detected that the line-side interface is connected to the host interface, a first control signal is sent to the first control switch to turn on the first control switch, so as to connect the line-side interface and the power supply module and supply power to the host interface.

[0014] In a third aspect, the present application provides a power supply method for an ultrasonic imaging system, and the method includes:

[0015] Detect whether the line-side interface is connected to the host interface of the ultrasonic imaging device;

[0016] If it is detected that the line-side interface is connected to the host interface, a first control signal is sent to the first control switch to turn on the first control switch, so as to connect the line-side interface and the power supply module and supply power to the host interface.

[0017] In a fourth aspect, the present application provides an ultrasonic imaging device, and the ultrasonic imaging device includes:

[0018] A load, which is used for ultrasonic imaging;

[0019] A host interface, which is provided with a second magnetic member, and the second magnetic member is used for magnetic adsorption with the line-side interface of the power supply device of the ultrasonic imaging device so that the host interface is connected to the line-side interface of the power supply device;

[0020] Wherein, when the host interface is connected to the line-side interface, the host interface outputs a characteristic signal representing the ultrasonic imaging device to the line-side interface.

[0021] The embodiments of the present application provide an ultrasonic imaging system and its power supply method, an ultrasonic imaging device and its power supply device. By connecting the power supply device and the ultrasonic imaging device in a magnetic adsorption manner, it is not necessary for the user to plug and unplug with force, and the line-side interface and the host interface can be connected in a shorter time, reducing the user's working intensity and facilitating the user's use. In addition, the present application also detects the characteristic signal of the ultrasonic imaging device to realize that when the line-side interface of the power supply device is connected to the ultrasonic imaging device, the power supply module of the power supply device supplies power to the interface, which can avoid the large temperature rise and abnormal discharge and sparking caused by the large impedance at the moment of interface contact in the magnetic adsorption connection method, and prolong the service life.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the disclosure of this application. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic structural diagram of an ultrasonic imaging system according to an embodiment of this application;

[0025] Figure 2 is Figure 1 a schematic structural diagram of the load in

[0026] Figure 3 is Figure 1 a schematic structural diagram of the characteristic circuit in

[0027] Figure 4 is Figure 1 a schematic structural diagram of the in - situ detection circuit in

[0028] Figure 5 is a schematic structural diagram of an ultrasonic imaging system according to an embodiment;

[0029] Figure 6 is a schematic structural diagram of another embodiment of the ultrasonic imaging system;

[0030] Figure 7 is a schematic structural diagram of still another embodiment of the ultrasonic imaging system;

[0031] Figure 8 is a schematic structural diagram of yet another embodiment of the ultrasonic imaging system;

[0032] Figure 9 is a schematic structural diagram of yet another embodiment of the ultrasonic imaging system;

[0033] Figure 10 is a schematic structural diagram of an embodiment of the power supply device of the ultrasonic imaging system;

[0034] Figure 11 is a schematic structural diagram of an embodiment of the ultrasonic imaging device;

[0035] Figure 12 is a schematic flowchart of a power supply method for an ultrasonic imaging system according to an embodiment of this application.

[0036] Figure 13It is a schematic flowchart of a power-off control method for an ultrasonic imaging system according to an embodiment of the present application.

[0037] Explanation of reference numerals:

[0038] 100, ultrasonic imaging device; 110, load; 111, ultrasonic probe; 112, main board; 101, processor; 113, display; 120, host interface; 121, second magnetic member; 122, third magnetic member; 130, characteristic circuit; 131, impedance circuit; 132, first delay circuit; 133, first memory; 140, second control switch; 150, device control circuit; 151, power-on / off detection circuit; 152, second power-on control circuit; 153, second temperature sensor; 1531, second temperature sensor; 154, second on-off control circuit; 160, voltage detection circuit; 170, rechargeable battery;

[0039] 200, power supply device; 210, line-side interface; 211, first magnetic member; 212, detection terminal; 213, communication terminal; 214, Hall element; 220, power module; 230, first control switch; 240, line-side control circuit; 241, in-position detection circuit; 242, first power-on control circuit; 243, short-circuit detection circuit; 244, first temperature sensor; 2441, first temperature sensor; 245, first on-off control circuit; 250, second delay circuit; 260, first sampling circuit;

[0040] 10, host Hall element; 11, output terminal; 20, fourth magnetic member; 30, input terminal. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0042] The flowchart shown in the accompanying drawings is only an example illustration, and does not necessarily include all the contents and operations / steps, nor is it necessary to be executed in the described order. For example, some operations / steps can be decomposed, combined, or partially merged, so the actual execution order may be changed according to the actual situation.

[0043] Next, some embodiments of the present application will be described in detail in conjunction with the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0044] Please refer to Figure 1 ,Figure 1 This is a schematic structural diagram of an ultrasonic imaging system provided by an embodiment of the present application. The ultrasonic imaging system includes an ultrasonic imaging device 100 and a power supply device 200. The power supply device 200 can supply power to the ultrasonic imaging device 100.

[0045] As Figure 1 shown, the ultrasonic imaging device 100 includes a load 110 and a host interface 120 provided with a second magnetic member 121. The power supply device 200 supplies power to the ultrasonic imaging device 100 by connecting to the host interface 120. Specifically, the second magnetic member 121 is used for magnetic adsorption with the line-side interface 210 of the power supply device 200 of the ultrasonic imaging device 100 so that the host interface 120 is connected to the power supply device 200.

[0046] Exemplarily, the load 110 is used for ultrasonic imaging. As Figure 2 shown, the load 110 may include parts that consume electrical energy such as the ultrasonic probe 111, the main board 112, and the display 113 of the ultrasonic imaging device 100. The main board 112 obtains ultrasonic echo signals from the ultrasonic probe 111, performs ultrasonic imaging on the ultrasonic echo signals to obtain an ultrasonic image of the subject to be measured; and then transmits the ultrasonic image to the display 113 for display.

[0047] It can be understood that the ultrasonic imaging device 100 is used to emit ultrasonic waves to the subject to be measured through the ultrasonic probe 111, receive the ultrasonic echoes returned from the subject to be measured, perform ultrasonic imaging on the ultrasonic echo signals to obtain an ultrasonic image of the subject to be measured; and then display the ultrasonic image on the display 113.

[0048] The power supply device 200 is used to provide electrical energy to the ultrasonic imaging device 100. Specifically, as Figure 1 shown, the power supply device 200 includes a line-side interface 210, a power module 220, and a first control switch 230. The power module 220 is used to provide electrical energy to the line-side interface 210. Exemplarily, the power supply device 200 further includes a line-side control circuit 240 for controlling whether the power module 220 provides electrical energy to the line-side interface 210.

[0049] Among them, the line-side interface 210 is provided with a first magnetic member 211. The first magnetic member 211 is used for magnetic adsorption with the host interface 120 so that the line-side interface 210 is connected to the host interface 120. Specifically, the first magnetic member 211 is magnetically adsorbed with the second magnetic member 121 of the host interface 120 to realize the connection between the line-side interface 210 and the host interface 120. The second magnetic member 121 and the first magnetic member 211 are, for example, ferrite magnets, alnico magnets, neodymium iron boron magnets, etc. The present invention does not limit this.

[0050] The power supply module 220 is used to supply electrical energy to the line-side interface 210. For example, the power supply module 220 includes a power adapter, which is used to convert the mains power into electrical energy matching the ultrasonic imaging device 100. Exemplarily, the power supply module 220 further includes a power cord, one end of the power cord is connected to the line-side interface 210, and the other end is connected to the power adapter. For example, the power cord and the power adapter are fixedly connected or detachably connected.

[0051] Figure 1 The shown ultrasonic imaging system is connected to the power supply device 200 and the ultrasonic imaging device 100 by magnetic adsorption, without the need for the user to insert and unplug forcefully. The line-side interface 210 and the host interface 120 can be connected in a shorter time, reducing the working intensity of the user and facilitating the user's use. When magnetically connected, due to the relatively large resistance at the moment of contact of the magnetic ports, live plugging and unplugging may cause local overheating and possible arcing damage to the device. Therefore Figure 1 the ultrasonic imaging system further provides a first control switch 230 and a line-side control circuit 240 on the power supply device 200, so that when it is detected that the line-side interface 210 has been connected to the host interface 120, the line-side interface 210 and the power supply module 220 are connected, enabling the power supply device 200 to supply power externally.

[0052] The first control switch 230 and the line-side control circuit 240 can be arranged at a position close to the power adapter, arranged in the power adapter, or arranged on the power cord, or can also be arranged at a position close to the line-side interface 210. It can be understood that when the first control switch 230 and the line-side control circuit 240 are arranged at a position close to the line-side interface 210, it is convenient for circuit layout and improves reliability.

[0053] Specifically, as Figure 1 shown, the first control switch 230 is connected to the power supply module 220 and the line-side interface 210, and can be specifically connected between the power supply module 220 and the line-side interface 210. The first control switch 230 is used to controllably switch between the on and off states, so as to connect or disconnect the power supply module 220 and the line-side interface 210. For example, the first control switch 230 includes a metal-oxide semiconductor field effect transistor (MOSFET), and the present invention is not limited thereto.

[0054] The line-side control circuit 240 is respectively signal-connected to the line-side interface 210 and the first control switch 230, and is used to detect whether the line-side interface 210 is connected to the host interface 120 of the ultrasonic imaging device 100; if the line-side control circuit 240 detects that the line-side interface 210 is connected to the host interface 120, it sends a first control signal to the first control switch 230 to make the first control switch 230 conduct, so as to connect the line-side interface 210 and the power supply module 220 and supply power to the host interface 120.

[0055] When the line - side interface 210 is not connected to the host interface 120, the power module 220 and the line - side interface 210 are not connected, and the line - side interface 210 has no power supply. Therefore, when the line - side interface 210 approaches the host interface 120, no abnormal discharge and sparking will occur. After detecting the connection between the line - side interface 210 and the host interface 120, the first control switch 230 is turned on, and the power module 220 supplies power to the line - side interface 210, so that the host interface 120 can obtain electrical energy. During this process, after the magnetic components of the power supply device 200 and the ultrasonic imaging device 100 have been successfully connected, the power supply device 200 supplies power to the ultrasonic imaging device 100. This process will not generate abnormal discharge and sparking, and can avoid the large temperature rise caused by the large impedance at the moment of interface contact in the magnetic adsorption connection method, which can protect the safety of the subsequent load and extend its service life.

[0056] Exemplarily, the line - side control circuit 240 is used to detect the device signal output by the line - side interface 210, and determine whether the line - side interface 210 is connected to the host interface 120 of the ultrasonic imaging device 100 according to the device signal output by the line - side interface 210. For example, when the line - side control circuit 240 detects that the device signal is a characteristic signal representing the ultrasonic imaging device 100, it sends a first control signal to the first control switch 230 to turn on the first control switch 230, so as to connect the line - side interface 210 and the power module 220 and supply power to the host interface 120. The detection of the characteristic signal helps the line - side control circuit 240 to accurately detect the ultrasonic imaging device 100, and will not supply power to other non - ultrasonic imaging devices, or supply power externally when accidentally connected to other magnetic components, further improving the power supply safety.

[0057] For example, after the line - side interface 210 and the host interface 120 are connected, the power supply device 200 can transmit a signal to the host interface 120 through the line - side interface 210. After receiving the signal transmitted by the line - side interface 210, the host interface 120 outputs a feedback electrical signal to the line - side interface 210, and the line - side interface 210 further outputs the feedback electrical signal received from the host interface 120 to the line - side control circuit 240. This feedback electrical signal is the device signal output by the line - side interface to the line - side control circuit 240. When the line - side interface 210 and the host interface 120 are connected properly, the feedback electrical signal is a characteristic signal representing the ultrasonic imaging device 100.

[0058] In some embodiments, as Figure 1 shown, the ultrasonic imaging device 100 includes a characteristic circuit 130 for providing a characteristic signal. The characteristic circuit 130 can be set on the main board 112 of the ultrasonic imaging device 100, for example, or on a circuit board close to the host interface 120. The characteristic circuit 130 can respond to the signal transmitted by the line - side interface 210 and output a feedback electrical signal to the host interface 120.

[0059] Exemplarily, as Figure 1 shown, the line-side interface 210 includes a detection terminal 212. The detection terminal 212 is used to connect to the characteristic circuit 130 of the ultrasonic imaging device 100 when the line-side interface 210 is connected to the host interface 120, for transmitting signals to the characteristic circuit 130, and outputting the feedback electrical signal transmitted from the host interface 120 to the line-side control circuit 240. The line-side control circuit 240 includes an on-site detection circuit 241 connected to the detection terminal 212. The on-site detection circuit 241 is used to detect whether the signal received by the detection terminal 212 conforms to the characteristic signal representing the ultrasonic imaging device 100, and determines that the line-side interface 210 is connected to the host interface 120 when the characteristic signal is detected.

[0060] After the line-side interface 210 and the host interface 120 are connected, the detection terminal 212 can transmit a current signal to the host interface 120, for example. In response to the current signal, the characteristic circuit 130 can transmit a feedback electrical signal in the form of a voltage, that is, a feedback voltage signal, to the detection terminal 212 through the host interface 120. The detection terminal 212 can transmit a communication request signal to the host interface 120, for example. In response to the request signal, the characteristic circuit 130 transmits a communication response signal stored internally to the detection terminal 212 through the host interface 120. In some examples, the characteristic circuit 130 can also actively output a signal to the detection terminal 212, and the line-side control circuit 240 can determine that the line-side interface 210 is connected to the host interface 120 based on the actively output signal. Some exemplary embodiments will be specifically described below.

[0061] Exemplarily, the on-site detection circuit 241 is used to determine whether the detection terminal 212 is connected to the ultrasonic imaging device 100 according to the impedance connected to the detection terminal 212.

[0062] For example, as Figure 3 shown, the characteristic circuit 130 includes an impedance circuit 131 with a preset impedance value. The on-site detection circuit 241 is used to detect the impedance connected to the detection terminal 212, and determine whether the detection terminal 212 is connected to the characteristic circuit 130 according to the impedance connected to the detection terminal 212.

[0063] For example, the impedance circuit 131 includes a resistor with a preset resistance value. When the on-site detection circuit 241 detects that the impedance connected to the detection terminal 212 is within the resistance value range determined according to the resistance value of the resistor, it can be determined that the detection terminal 212 is connected to the characteristic circuit 130, thereby determining that the line-side interface 210 and the host interface 120 are connected.

[0064] For example, the impedance circuit 131 includes a resistor with a preset resistance value. If the line-side interface 210 is connected to the host interface 120, the line-side interface 210 can provide a current or voltage signal to the impedance circuit 131, and based on this, the impedance circuit 131 will output a feedback voltage signal to the line-side interface 210 through the host interface 120. Since the magnitude of the current signal provided by the line-side interface 210 is within a preset range and the resistance value of the impedance circuit 131 is fixed, the feedback voltage signal provided by the impedance circuit 131 is a voltage signal within a preset voltage range, and the feedback voltage signal within this preset voltage range is the device signal detected by the line-side control circuit 240 as a characteristic signal. If the line-side interface 210 is connected to other devices with magnetic components, as long as the other devices cannot provide a feedback voltage signal that falls within the preset voltage range, the line-side control circuit 240 will, based on the result of not detecting the characteristic signal, determine that the power supply device 200 has not been connected to the ultrasonic imaging device 100 and will not turn on the power module 220 to supply power outward through the line-side interface 210.

[0065] Exemplarily, as Figure 3 shown, the impedance circuit 131 may further include a first delay circuit 132, which is used to make the impedance connected to the detection terminal 212 stable at the preset resistance value after a first preset duration when the host interface 120 is connected to the line-side interface 210. As described above, the resistance value of the impedance circuit 131 is basically fixed. Here, the description that the impedance connected to the detection terminal 212 becomes stable after a first preset duration does not mean that the resistance value of the impedance circuit 131 itself changes, but because of the effect of the first delay circuit 132, the feedback electrical signal output by the impedance circuit 131 to the detection terminal 212 becomes stable after a first preset duration, for example, stable within a preset voltage range. Therefore, under the action of the first delay circuit 132, the in-position detection circuit 241 can detect the characteristic signal representing the ultrasonic imaging device 100 after a first preset duration. That is, the in-position detection circuit 241 can detect that the impedance connected to the detection terminal 212 is the impedance with the preset resistance value after a first preset duration.

[0066] For example, the first delay circuit 132 includes a capacitor and / or an inductor. When the line-side interface 210 and the host interface 120 are connected so that the detection terminal 212 is connected to the impedance circuit 131, the detection terminal 212 applies a voltage or current to the impedance circuit 131. Since the voltage of the capacitor and the current of the inductor in the first delay circuit 132 cannot change suddenly, it takes a period of time before the resistance in the impedance circuit 131 can output a stable voltage and current, and the in-position detection circuit 241 can detect the stable impedance value of the impedance circuit 131.

[0067] Exemplarily, if there is no stable connection between the line-side interface 210 and the host interface 120, for example, there is foreign matter on the line-side interface 210 and / or the host interface 120, or there is foreign matter between the line-side interface 210 and the host interface 120, the on-site detection circuit 241 cannot detect the stable impedance value of the impedance circuit 131, so that the situation where the line-side interface 210 and the host interface 120 do not have a stable connection can be detected. In this case, the line-side control circuit 240 does not control the first control switch 230 to conduct, so that the power supply module 220 does not supply power to the line-side interface 210, and there will be no abnormal discharge and sparking between the line-side interface 210 and the host interface 120, nor will there be a large temperature rise caused by the connection impedance during unstable connection.

[0068] Exemplarily, as Figure 4 shown, the on-site detection circuit 241 may include a first comparator OA1 and a second comparator OA2; wherein the first input terminal +IN of the first comparator OA1 is connected to a first reference voltage Vref1, the second input terminal -IN of the second comparator OA2 is connected to a second reference voltage Vref2 lower than the first reference voltage Vref1, the second input terminal -IN of the first comparator OA1 and the first input terminal +IN of the second comparator OA2 are connected to the detection terminal 212, and the output terminals OUT1 of the first comparator OA1 and OUT2 of the second comparator OA2 are connected to the first control switch 230.

[0069] Wherein, when the device signal output by the detection terminal 212 is greater than the second reference voltage Vref2 and less than the first reference voltage Vref1, the first comparator OA1 or the second comparator OA2 outputs a first control signal to the first control switch 230 to make the first control switch 230 conduct.

[0070] Figure 4 The on-site detection circuit 241 only allows the first control switch 230 to conduct when a device signal within the range of the two reference voltages is detected under the control of the first reference voltage Vref1 and the second reference voltage Vref2. On the other hand, Figure 4 the on-site detection circuit 241 can also serve as a short-circuit detection circuit to play a role in short-circuit protection. If a short circuit occurs between the line-side interface 210 and the host interface 120, the voltage signal output by the detection terminal 212 to the on-site detection circuit 241 will drop below the second reference voltage Vref2. At this time, the line-side control circuit 240 can control the first control switch 230 to disconnect to avoid equipment hazards caused by the short circuit.

[0071] In an embodiment not shown, the on-site detection circuit 241 may also use only one comparator to output a first control signal according to the comparison result between the device signal output by the detection terminal 212 and a built-in reference voltage.

[0072] Exemplarily, such as Figure 5 In another example as shown, the feature circuit 130 may include a first memory 133 storing a feature signal, and the line-side interface 210 further includes a communication terminal 213. The communication terminal 213 is configured to be signal-connected to the feature circuit 130 via another communication terminal correspondingly arranged on the host interface 120 when the line-side interface 210 is connected to the host interface 120; the in-position detection circuit 241 reads the feature signal in the first memory 133 through the communication terminal 213.

[0073] The first memory 133 may be, for example, a memory on the main board 112 of the ultrasonic imaging device 100, or a memory on a circuit board close to the host interface 120.

[0074] Exemplarily, such as Figure 5 As shown, the line-side interface 210 may include a Hall element 214, and a third magnetic member 122 is provided on the host interface 120. When the line-side interface 210 is connected to the host interface 120, the Hall element 214 and the third magnetic member 122 are in corresponding positions. The line-side control circuit 240 is configured to detect the output of the Hall element 214 and determine whether the line-side interface 210 is connected to the host interface 120 according to the output of the Hall element 214.

[0075] Specifically, the third magnetic member 122 may be a magnetic member independent of the second magnetic member 121, or may be the second magnetic member 121 itself.

[0076] Specifically, the in-position detection circuit 241 of the line-side control circuit 240 receives the output of the Hall element 214, and if the magnetic field where the Hall element 214 is located is strong enough, it is determined that the line-side interface 210 is connected to the host interface 120.

[0077] In some other embodiments, such as Figure 6 As shown, the host interface 120 includes a host Hall element 10, which is a Hall element provided at the host interface 120, and a fourth magnetic member 20 is provided on the line-side interface 210. When the line-side interface 210 is connected to the host interface 120, the host Hall element 10 and the fourth magnetic member 20 are in corresponding positions. The line-side control circuit 240 is configured to detect the output of the host Hall element 10 through the input terminal 30 and determine whether the line-side interface 210 is connected to the host interface 120 according to the output of the host Hall element 10.

[0078] The fourth magnetic member 20 may be a magnetic member independent of the first magnetic member 211, or may be the first magnetic member 211 itself.

[0079] For example, an output terminal 11 of the host Hall element 10 is provided on the host interface 120, an input terminal 30 for the signal of the host Hall element 10 is provided on the line-side interface 210, and the input terminal 30 is connected to the line-side control circuit 240. The signal output by the host Hall element 10 on the host interface 120 is transmitted to the line-side control circuit 240 via the output terminal 11 and the input terminal 30, and the line-side control circuit 240 can determine whether the line-side interface 210 is connected to the host interface 120 according to the signal of the input terminal 30.

[0080] In some embodiments, the line-side interface 210 may include a distance sensor, where the distance sensor may be an optical sensor, or an infrared sensor, or an ultrasonic sensor, or a capacitance sensor, or a laser sensor, or a radar sensor. The distance sensor is used to output distance information between the host interface and the line-side interface or information related to the distance information during the process of connecting the line-side interface to the host interface.

[0081] For example, an infrared sensor is provided on the line-side interface 210. The infrared sensor emits infrared rays to the host interface or the area near the host interface. The host interface or the area near the host interface will reflect the infrared rays. The infrared sensor receives the reflected infrared rays, and then the distance between the host interface and the line-side interface can be measured based on the speed of infrared rays propagating in the air and the time difference between the emission and reception of the infrared rays.

[0082] The line-side control circuit 240 is used to detect the output of the distance sensor and determine whether the line-side interface 210 is connected to the host interface 120 according to the output of the distance sensor.

[0083] In some embodiments, a power supply device as described above is provided.

[0084] Similarly, the distance sensor can also be provided on the host interface.

[0085] In some embodiments, the host interface 120 includes a distance sensor, and the distance sensor is used to output distance information between the host interface and the line-side interface or information related to the distance information during the process of connecting the line-side interface to the host interface. The basic principle is as described above and will not be elaborated here.

[0086] In some embodiments, the line-side interface 210 includes a tactile switch. When it is determined that the host interface 120 and the line-side interface 210 are connected, pressing the tactile switch will output a signal indicating that the line-side interface 210 and the host interface 120 are already connected. The line-side control circuit is used to detect the output of the tactile switch and determine whether the line-side interface is connected to the host interface according to the output of the tactile switch.

[0087] In some embodiments, a power supply device as described above is provided.

[0088] Similarly, the touch switch can also be arranged at the host interface 120.

[0089] In some embodiments, the host interface 120 includes a touch switch, and the principle is the same as that described above, which will not be elaborated here.

[0090] In some embodiments, such as Figure 5 As shown, the line-side control circuit 240 may further include a first power-on control circuit 242 connected to the first control switch 230. The first power-on control circuit 242 is configured to control the voltage and / or current output from the line-side interface 210 to the host interface 120 to gradually rise to the rated load voltage and / or rated load current when the first control switch 230 is turned on. For example, the first power-on control circuit 242 can control the voltage and / or current output from the line-side interface 210 to the host interface 120 to gradually rise from zero to the rated load voltage and / or rated load current.

[0091] Exemplarily, the first power-on control circuit 242 is connected between the in-position detection circuit 241 and the first control switch 230.

[0092] Exemplarily, when the in-position detection circuit 241 detects the characteristic signal of the ultrasonic imaging device 100, or the line-side control circuit 240 determines that the line-side interface 210 is connected to the host interface 120 according to the output of the Hall element 214, the first power-on control circuit 242 controls the operating state of the first control switch 230 to gradually transition to the saturation region through the linear region. Among them, when the first control switch 230 operates in the linear region, the voltage and / or current output from the line-side interface 210 to the host interface 120 gradually rises; when the first control switch 230 operates in the saturation region, it is fully turned on, and the voltage and / or current output from the line-side interface 210 to the host interface 120 reaches the rated load voltage and / or rated load current.

[0093] It can be understood that by controlling the voltage and / or current output from the line-side interface 210 to the host interface 120 to gradually rise to the rated load voltage and / or rated load current, abnormal spark discharge generated when the line-side interface 210 and the host interface 120 are connected can be further prevented. Moreover, it can avoid the impact on the ultrasonic imaging device 100 caused by the sudden access of a large voltage and / or current to the host interface 120.

[0094] In some embodiments, such as Figure 7As shown, the power supply device 200 may further include a second delay circuit 250 connected to the first control switch 230, which is used to connect the line-side interface 210 and the power supply module 220 to supply power to the host interface 120 after a second preset duration when the line-side control circuit 240 detects that the line-side interface 210 is connected to the host interface 120. For example, when the line-side control circuit 240 detects that the device signal is a characteristic signal representing the ultrasonic imaging device 100.

[0095] The second delay circuit 250 can be beneficial to control the first control switch 230 to conduct when the line-side interface 210 and the host interface 120 are stably connected, so that the power supply module 220 supplies power to the line-side interface 210, preventing large temperature rise and abnormal discharge and sparking caused by the connection impedance when the line-side interface 210 and the host interface 120 are unstably connected.

[0096] Exemplarily, the power supply device 200 includes a first power-on control circuit 242, or includes a second delay circuit 250, or includes both the first power-on control circuit 242 and the second delay circuit 250.

[0097] In some embodiments, the line-side control circuit 240 can be used to control the first control switch 230 to disconnect when the magnetic adsorption between the first magnetic member 211 and the second magnetic member 121 is released, so that the power supply module 220 and the line-side interface 210 are disconnected. Thus, when the magnetic interface of the power supply device 200 is unplugged from the magnetic interface of the ultrasonic imaging device 100, the power supply module 220 of the power supply device 200 and the line-side interface 210 are disconnected, and the power supply to the line-side interface 210 is stopped, which can avoid the problem of interface sparking when the magnetic interfaces are separated.

[0098] Exemplarily, if the line-side control circuit 240 detects that the line-side interface 210 is not connected to the host interface 120, a third control signal is sent to the first control switch 230 to make the first control switch 230 disconnect, so as to disconnect the connection between the line-side interface 210 and the power supply module 220.

[0099] Exemplarily, the in-position detection circuit 241 of the line-side control circuit 240 detects the device signal output by the detection terminal 212 of the line-side interface 210 to detect whether the signal received from the detection terminal 212 belongs to the characteristic signal representing the ultrasonic imaging device 100.

[0100] Specifically, when the magnetic adsorption between the first magnetic member 211 and the second magnetic member 121 is released, if the in-position detection circuit 241 does not detect a characteristic signal, it is determined that the magnetic adsorption between the first magnetic member 211 and the second magnetic member 121 has been released and the line-side interface 210 is not connected to the host interface 120. Thus, the line-side control circuit 240 can send a third control signal to the first control switch 230 to turn off the first control switch 230, so as to disconnect the connection between the line-side interface 210 and the power supply module 220.

[0101] Specifically, if the in-position detection circuit 241 detects that the device signal is not the characteristic signal of the ultrasonic imaging device 100, it sends a third control signal to the first control switch 230 to turn off the first control switch 230, so as to disconnect the connection between the line-side interface 210 and the power supply module 220. The detection of the characteristic signal helps the line-side control circuit 240 accurately detect the ultrasonic imaging device 100, and will not supply power to other non-ultrasonic imaging devices, or supply power externally when accidentally connected to other magnetic members, further improving the power supply safety.

[0102] In some embodiments, as Figure 7 shown, the power supply device 200 may further include a first sampling circuit 260 connected between the line-side interface 210 and the power supply module 220. The first sampling circuit 260 is used to sample the current transmitted from the power supply module 220 to the line-side interface 210. For example, the first sampling circuit 260 includes a sampling resistor disposed between the power supply module 220 and the first control switch 230.

[0103] The line-side control circuit 240 detects the sampled current transmitted from the power supply module 220 to the line-side interface 210 through the first sampling circuit 260, and when the sampled current of the line-side interface 210 is not less than the first overcurrent threshold, it disconnects the line-side interface 210 and the power supply module 220.

[0104] Exemplarily, as Figure 7 shown, the line-side control circuit 240 further includes a short-circuit detection circuit 243. The short-circuit detection circuit 243 is connected to the first sampling circuit 260 and the first power-on control circuit 242. The short-circuit detection circuit 243 determines whether the sampled current of the first sampling circuit 260 is not less than the first overcurrent threshold, and when it is not less than the first overcurrent threshold, the short-circuit detection circuit 243 sends a signal to the first power-on control circuit 242, and the first power-on control circuit 242 controls the first control switch 230 to turn off according to this signal.

[0105] The short - circuit detection circuit 243 can implement over - current protection. For example, when there is a foreign object on the line - side interface 210 causing a terminal short - circuit, and the sampled current transmitted from the power supply module 220 to the line - side interface 210 exceeds the first over - current threshold, the first control switch 230 can be controlled to disconnect, stopping the transmission of electrical energy to the line - side interface 210 and avoiding damage to the power supply device 200 caused by over - current.

[0106] In some embodiments, as Figure 8 shown, the line - side control circuit 240 includes a first temperature sensor 244 sensitive to temperature. The first temperature sensor 244 is disposed on the line - side interface 210 and is used to detect the temperature at the line - side interface 210. Exemplarily, the line - side control circuit 240 is configured to disconnect the connection between the line - side interface 210 and the power supply module 220 when the temperature of the line - side interface 210 is not less than the first temperature threshold, implementing temperature protection for the interface and avoiding continuous heating when the interface temperature is too high.

[0107] In some embodiments, the first temperature sensor 244 may include a first self - resetting temperature fuse disposed on the line - side interface 210. The first self - resetting temperature fuse is connected between the line - side interface 210 and the power supply module 220, for example, connected between the first control switch 230 and the line - side interface 210. When the temperature value of the line - side interface 210 exceeds the first temperature threshold, the first self - resetting temperature fuse automatically melts, thereby disconnecting the line - side interface 210 and the power supply module 220 and stopping the power supply module 220 from continuing to supply power to the line - side interface 210; when the temperature of the line - side interface 210 returns to a lower temperature, the first self - resetting temperature fuse resumes connection, and the power supply module 220 can supply power to the line - side interface 210. It can be understood that in this embodiment, temperature control may not require the first control switch 230, but rather the first self - resetting temperature fuse disconnects the line - side interface 210 and the power supply module 220.

[0108] Exemplarily, as Figure 9 shown, the line - side control circuit 240 may further include a first on - off control circuit 245. The first on - off control circuit 245 is connected to the line - side interface 210 and the first control switch 230. Specifically, the first on - off control circuit 245 is also connected to the first temperature sensor 244, detects the state of the first temperature sensor 244, and disconnects the connection between the line - side interface 210 and the power supply module 220 according to the state of the first temperature sensor 244. In this example, the first on - off control circuit 245 disconnects the connection between the line - side interface 210 and the power supply module 220 by turning off the first control switch 230.

[0109] Exemplarily, the state of the first temperature sensor 244 is different at different temperatures. For example, a self - resetting temperature fuse is in an open state at a higher temperature and in a connected state at a lower temperature. The first on - off control circuit 245 can determine whether to disconnect the connection between the line - side interface 210 and the power module 220 by detecting the state of the first temperature sensor 244.

[0110] Exemplarily, as Figure 9 shown, the first temperature sensor 244 may include a first temperature sensor 2441 disposed on the line - side interface 210; the first on - off control circuit 245 reads the temperature of the line - side interface 210 from the first temperature sensor 2441, and when the temperature of the line - side interface 210 is not less than the first temperature threshold, disconnects the connection between the line - side interface 210 and the power module 220.

[0111] Exemplarily, the first on - off control circuit 245 may include a control chip; the control chip is connected to the first temperature sensor 2441 and the first control switch 230; when the control chip controls the first control switch 230 to open, the connection between the line - side interface 210 and the power module 220 is disconnected.

[0112] It can be understood that, as Figure 9 shown, the in - place detection circuit 241 of the line - side control circuit 240 can be connected to the first on - off control circuit 245 for detecting whether the line - side interface 210 is connected to the host interface 120. When the in - place detection circuit 241 of the first on - off control circuit 245 detects that the line - side interface 210 is connected to the host interface 120, it connects the line - side interface 210 and the power module 220 to supply power to the host interface 120. After the power supply device 200 and the magnetic part of the ultrasonic imaging device 100 are successfully connected, the power supply device 200 supplies power to the ultrasonic imaging device 100. This process will not generate abnormal discharge and sparking, and can avoid the large temperature rise caused by the large impedance at the moment of interface contact in the magnetic adsorption connection method, and can protect the safety of the subsequent load and extend its service life.

[0113] It can be understood that the first on - off control circuit 245 may further include a first power - on control circuit 242. The first power - on control circuit 242 is used to control the voltage and / or current output from the line - side interface 210 to gradually rise to the rated load voltage and / or rated load current when the first on - off control circuit 245 connects the line - side interface 210 and the power module 220. It can further prevent abnormal spark discharge when the line - side interface 210 and the host interface 120 are connected. Moreover, it can avoid the impact on the ultrasonic imaging device 100 caused by the sudden access of a large voltage and / or current to the host interface 120.

[0114] Exemplarily, the first on-off control circuit 245 may be disposed in the power adapter of the power module 220 or on the power line of the power module 220.

[0115] Exemplarily, as Figure 10 shown, the first temperature sensor 244 may include a first temperature sensor 2441 disposed at the line-side interface 210. The first temperature sensor 2441 is configured to output a line-side temperature value according to the temperature change of the line-side interface 210. The line-side control circuit 240 is further configured to disconnect the line-side interface 210 and the power module 220 when the line-side temperature value is not less than the first temperature threshold.

[0116] Exemplarily, the first temperature sensor 2441 is connected to the first power-on control circuit 242 of the line-side control circuit 240. The first power-on control circuit 242 may control the first control switch 230 to disconnect according to the line-side temperature value obtained from the first temperature sensor 2441 when the temperature value of the line-side interface 210 exceeds the first temperature threshold, so as to stop the power module 220 from supplying power to the line-side interface 210 and prevent the temperatures at the line-side interface 210 and the host interface 120 from continuing to rise.

[0117] In some embodiments, the line-side control circuit 240 is further configured to: if no characteristic signal is detected, control the first control switch 230 to disconnect, so as to disconnect the line-side interface 210 and the power module 220. Therefore, when the line-side interface 210 and the host interface 120 are not connected, the power module 220 does not supply power to the line-side interface 210, and the line-side interface 210 is not charged, preventing short-circuit discharge caused by foreign objects contacting the line-side interface 210.

[0118] In some embodiments, as Figure 7 shown, the ultrasonic imaging device 100 further includes a device control circuit 150, and the device control circuit 150 is configured to control the connection between the host interface 120 and the load 110. Exemplarily, the ultrasonic imaging device 100 further includes a second control switch 140. The second control switch 140 is connected to the host interface 120 and the load 110 and is configured to controllably switch between the on and off states to connect or disconnect the host interface 120 and the load 110.

[0119] The device control circuit 150 is respectively connected to the second control switch 140 and the host interface 120, and is configured to send a second control signal to the second control switch 140 when detecting that the voltage and / or current output by the host interface 120 is not less than a preset connection threshold, so as to connect the host interface 120 and the load 110 and enable the host interface 120 to supply power to the load 110.

[0120] Exemplarily, when the line-side control circuit 240 of the power supply device 200 detects that the device signal output by the line-side interface 210 is a characteristic signal representing the ultrasonic imaging device 100, it connects the line-side interface 210 and the power module 220 to supply power to the host interface 120. At this time, the device control circuit 150 can detect the voltage and / or current output by the host interface 120.

[0121] If the voltage and / or current output by the host interface 120 reaches a preset connection threshold, for example, the connection threshold is 70%-100% of the rated load voltage and / or rated load current of the load 110, it can indicate that the line-side interface 210 and the host interface 120 are stably connected. Then the device control circuit 150 controls the second control switch 140 to conduct, so that the host interface 120 provides electrical energy to the load 110.

[0122] In some embodiments, the voltage and / or current output from the line-side interface 210 to the host interface 120 gradually rises to the rated load voltage and / or rated load current. The device control circuit 150 detects that the voltage and / or current output by the host interface 120 also gradually rises. When the voltage and / or current output by the host interface 120 rises to reach the connection threshold, the host interface 120 can provide electrical energy to the load 110. This can prevent the host interface 120 from suddenly providing a large voltage and / or current to the load 110, which may impact the ultrasonic imaging device 100.

[0123] Exemplarily, as Figure 7 shown, the device control circuit 150 includes a power-on / power-off detection circuit 151 for detecting the voltage and / or current output by the host interface 120. For example, when the power-on / power-off detection circuit 151 detects that the voltage and / or current output by the host interface 120 reaches a preset connection threshold, the device control circuit 150 outputs a signal for controlling the second control switch 140 to conduct. For example, the power-on / power-off detection circuit 151 may include a voltage sampling circuit for detecting the voltage output by the host interface 120, and then the device control circuit 150 can detect whether the output voltage reaches the preset voltage connection threshold.

[0124] Exemplarily, as Figure 7 shown, the device control circuit 150 further includes a second power-on control circuit 152 connected to the second control switch 140. The second power-on control circuit 152 is also connected to the power-on / power-off detection circuit 151 and is used to control the voltage and / or current output from the host interface 120 to the load 110 to gradually rise to the rated load voltage and / or rated load current when the host interface 120 and the load 110 are connected. This can further prevent the host interface 120 from suddenly providing a large voltage and / or current to the load 110, which may impact the ultrasonic imaging device 100.

[0125] Exemplarily, when the voltage and / or current output by the host interface 120 is not less than a preset connection threshold, the power-on / power-off detection circuit 151 outputs a signal to the second power-on control circuit 152; the second power-on control circuit 152 controls the operating state of the second control switch 140 to gradually transition from the linear region to the saturation region according to this signal. Among them, when the second control switch 140 operates in the linear region, the voltage and / or current output by the host interface 120 to the load 110 gradually increases; when the second control switch 140 operates in the saturation region and is fully conducting, the voltage and / or current output by the host interface 120 to the load 110 reaches the rated load voltage and / or rated load current of the load 110.

[0126] In some embodiments, as Figure 7 shown, the device control circuit 150 can also be used to control the second control switch 140 to disconnect when the magnetic attraction between the first magnetic member 211 and the second magnetic member 121 is released, so as to disconnect the connection between the host interface 120 and the load 110. Thus, when the magnetic interface of the power supply device 200 is unplugged from the magnetic interface of the ultrasonic imaging device 100, the connection between the host interface 120 and the load 110 can be disconnected, preventing the electrical energy stored in components such as capacitors and inductors in the load 110 from being transmitted to the host interface 120, causing problems such as interface arcing when the host interface 120 and the line-side interface 210 of the power supply device 200 are separated. It can also prevent damage to the load 110 when the discharged energy is conducted to the load 110 when a charged device such as the power supply device 200 discharges abnormally to the host interface 120.

[0127] Exemplarily, during the process of releasing the magnetic attraction between the first magnetic member 211 and the second magnetic member 121, the voltage and / or current output by the host interface 120 will decrease as the release operation progresses. The device control circuit 150 detects the voltage and / or current output by the host interface 120, and when it detects that the voltage and / or current output by the host interface 120 is less than a preset connection threshold, it sends a fourth control signal to the second control switch 140 to make the second control switch 140 disconnect, so as to disconnect the connection between the host interface 120 and the load 110 before the magnetic attraction between the first magnetic member 211 and the second magnetic member 121 is released.

[0128] Specifically, when the voltage and / or current output by the host interface 120 is less than a preset connection threshold, it is determined that the connection between the host interface 120 and the line-side interface 210 of the power supply device 200 is disconnected or the connection is unstable and cannot provide the required electrical energy for the load 110. At this time, by disconnecting the connection between the host interface 120 and the load 110, the load 110 can be protected.

[0129] Exemplarily, the power-on / power-off detection circuit 151 of the device control circuit 150 may include, for example, a voltage sampling circuit, which can be used to detect the voltage output by the host interface 120. Subsequently, the power-on / power-off detection circuit 151 can detect whether the voltage output by the host interface 120 reaches a preset voltage connection threshold.

[0130] Exemplarily, the ultrasonic imaging device 100 further includes a second sampling circuit connected between the host interface 120 and the load 110. For example, the second sampling circuit includes a sampling resistor disposed between the host interface 120 and the load 110. The device control circuit 150 detects the sampling current transmitted from the host interface 120 to the load 110 through the second sampling circuit, and when the sampling current of the host interface 120 obtained is not less than the second overcurrent threshold, controls the second control switch 140 to disconnect. Thus, overcurrent protection of the ultrasonic imaging device 100 can be achieved. For example, when the load 110 has a short circuit, the current sampled from the host interface 120 transmitted to the load 110 exceeds the second overcurrent threshold, then the second control switch 140 can be controlled to disconnect, stopping the transmission of electrical energy to the load 110 and avoiding damage to the load 110 caused by overcurrent.

[0131] In some embodiments, during the process of releasing the magnetic adsorption between the first magnetic member 211 and the second magnetic member 121, before the line-side control circuit 240 controls the first control switch 230 to disconnect, the device control circuit 150 controls the second control switch 140 to disconnect to more sensitively protect the ultrasonic imaging device.

[0132] In some embodiments, as Figure 11 shown, the load 110 of the ultrasonic imaging device 100 includes a processor 101 connected to the host interface 120. The processor 101 is, for example, disposed on the main board 112 of the ultrasonic imaging device 100.

[0133] Exemplarily, the ultrasonic imaging device 100 further includes a voltage detection circuit 160.

[0134] The voltage detection circuit 160 is, for example, connected between the second control switch 140 and the processor 101, and is used to output a valid detection signal to the processor 101 when detecting that the voltage output by the second control switch 140 reaches a preset operating voltage. The processor 101 enables the second control switch 140 to supply power to the load 110 according to the valid detection signal.

[0135] Wherein, the preset operating voltage is, for example, equal to the rated load voltage of the load 110. When the voltage output by the second control switch 140 reaches the preset operating voltage, the processor 101 enables the load 110 to work. This prevents the load 110 from operating abnormally when the voltage is insufficient, such as inaccurate ultrasonic echo detection, etc.

[0136] In some embodiments, the ultrasonic imaging device 100 may further include a rechargeable battery 170. The power supply device 200 can charge the rechargeable battery 170 of the ultrasonic imaging device 100, for example, by charging the rechargeable battery 170 through the line-side interface 210, the host interface 120, and the second control switch 140. Thus, when the ultrasonic imaging device 100 is not connected to the power supply device 200, the load 110 of the ultrasonic imaging device 100 can obtain electrical energy from the rechargeable battery 170. When the ultrasonic imaging device 100 is connected to the power supply device 200, it can choose to obtain electrical energy from the power supply device 200 or from the rechargeable battery 170.

[0137] In some embodiments, as Figure 8 shown, the device control circuit 150 includes a second temperature sensor 153 sensitive to temperature, and the second temperature sensor 153 is disposed at the host interface 120. Exemplarily, the device control circuit 150 is configured to disconnect the connection between the host interface 120 and the load 110 when the temperature of the host interface 120 is not less than a second temperature threshold, so as to achieve temperature protection for the interface and avoid continuous heating when the interface temperature is too high.

[0138] For example, the second temperature sensor 153 includes a second self-resetting temperature fuse connected between the host interface 120 and the load 110; for example, the second self-resetting temperature fuse is connected between the host interface 120 and the second control switch 140. When the temperature value of the host interface 120 exceeds the temperature threshold, the second self-resetting temperature fuse automatically melts, thereby disconnecting the connection between the host interface 120 and the load 110 and stopping the host interface 120 from continuing to supply power to the load 110. It can be understood that in this embodiment, the temperature control may not require the second control switch 140, but the connection between the host interface 120 and the load 110 is disconnected through the second self-resetting temperature fuse.

[0139] Exemplarily, as Figure 9 shown, the second temperature sensor 153 includes a second temperature sensor 1531 disposed at the host interface 120; the second temperature sensor 1531 is configured to output a host-side temperature value that varies according to the temperature of the host interface 120. The line-side control circuit 240 is further configured to control the second control switch 140 to disconnect when the host-side temperature value is not less than the second temperature threshold, so as to disconnect the connection between the host interface 120 and the load 110.

[0140] Exemplarily, as Figure 9As shown, the device control circuit 150 further includes a second on-off control circuit 154 connected to the second temperature sensor 1531. The second on-off control circuit 154 is connected to the host interface 120 and the second control switch 140. The second on-off control circuit 154 reads the temperature of the host interface 120 from the second temperature sensor 1531, and when the temperature of the host interface 120 is not less than the second temperature threshold, disconnects the connection between the host interface 120 and the load 110 by controlling the second control switch. In this example, the second on-off control circuit 154 disconnects the connection between the host interface 120 and the load 110 by controlling the second control switch 140 to turn off.

[0141] The second on-off control circuit 154 can be connected to the power-on / power-off detection circuit 151. When the power-on / power-off detection circuit 151 detects that the voltage and / or current output by the host interface 120 is not less than a preset connection threshold, it connects the host interface 120 and the load 110, and the host interface 120 supplies power to the load 110.

[0142] It can be understood that the second on-off control circuit 154 may include a second power-on control circuit 152. The second power-on control circuit 152 is used to gradually increase the voltage and / or current output by the host interface 120 to the rated load voltage and / or rated load current when the second on-off control circuit 154 connects the host interface 120 and the load 110.

[0143] It can be understood that the second on-off control circuit 154 may include a control chip. The second power-on control circuit 152 may be an internal circuit of the control chip or a peripheral circuit of the control chip. When the second power-on control circuit 152 is a peripheral circuit, the control chip is connected to the power-on / power-off detection circuit 151 and the second power-on control circuit 152. When the control chip controls the second control switch to conduct according to the output of the power-on / power-off detection circuit 151, the second power-on control circuit 152 controls the voltage and / or current output by the host interface 120 to gradually increase to the rated load voltage and / or rated load current.

[0144] It can be understood that the in-position detection circuit 241, the first power-on control circuit 242, the short-circuit detection circuit 243, the second delay circuit 250, etc. of the power supply device 200 can be composed of discrete components, for example, composed of an operational amplifier circuit and an RC circuit.

[0145] It can be understood that the power supply device 200 may also include one or more control chips, such as a single-chip microcomputer chip. For example, the in-position detection circuit 241 includes a control chip, and the first power-on control circuit 242 includes a control chip; or the in-position detection circuit 241, the first power-on control circuit 242, the short-circuit detection circuit 243, and the second delay circuit 250 are implemented by the same control chip.

[0146] It can be understood that the in-position detection circuit 241, the first power-on control circuit 242, the short-circuit detection circuit 243, the second delay circuit 250, etc. of the power supply device 200 can be partially composed of discrete components and can be partially composed of a control chip.

[0147] It can be understood that the power-on / power-off detection circuit can be a power-on detection circuit, a power-off detection circuit, or a power-on and power-off detection circuit. It can be understood that the ultrasonic imaging device of the present application can be a portable ultrasonic imaging device with a rechargeable battery. The portable ultrasonic imaging device mainly includes a main unit and a flip cover that can be reversibly mounted on the main unit. The main unit can include a housing, and the second magnetic member 121 can be disposed on the left side, the right side, or the rear side of the main unit (housing).

[0148] In some embodiments, the power-on and power-off control processes of the ultrasonic imaging system of the present application are as follows:

[0149] (1) Power-on process:

[0150] Before the host interface 120 of the ultrasonic imaging device 100 is connected to the line-side interface 210 of the power supply device 200, since the detection terminal 212 of the line-side interface 210 does not receive the characteristic signal output by the host interface 120, the line-side control circuit 240 controls the first control switch 230 to disconnect, the power module 220 is disconnected from the line-side interface 210, and the line-side interface 210 does not supply power to the host interface 120;

[0151] After the line-side interface 210 and the host interface 120 are magnetically adsorbed and connected, the characteristic circuit 130 can feedback a characteristic signal, such as a voltage signal, to the detection terminal 212 through the host interface 120. The line-side control circuit 240 determines that the line-side interface 210 has been connected to the host interface 120 according to the characteristic signal, and can control the first control switch 230 to conduct, so that the line-side interface 210 can supply power to the host interface, or can further control the line-side interface 210 to output a voltage and / or current that gradually rises to the rated voltage and / or rated current of the load to the host interface 120 through the first power-on control circuit 242;

[0152] When the host interface 120 of the ultrasonic imaging device 100 receives the voltage and / or current provided by the line-side interface 210, the power-on / power-off detection circuit 151 of the ultrasonic imaging device detects whether the voltage and / or current output by the host interface reaches the connection threshold, and only conducts the second control switch 140 after reaching the connection threshold, so that the host interface 120 can supply power to the load 110, or can further control the host interface 120 to output a voltage and / or current that gradually rises to the rated voltage and / or rated current of the load to the load 110 through the second power-on control circuit 152;

[0153] The ultrasonic imaging device 100 may further be provided with a voltage detection circuit 160 between the second control switch 140 and the load 110. When the voltage detection circuit 160 determines that the voltage output by the second control switch 140 reaches a preset operating voltage, it outputs a valid detection signal to the processor 101, and the processor 101 then enables the second control switch 140 to supply power to the load 110.

[0154] The above power-on control process involves detection and control links such as interface connection detection, line-side power-on control, host-side power-on detection, host-side power-on control, and host-side voltage control. Some embodiments of the present application may include all or part of the above detection and control links to avoid any accidental sparking and temperature rise during the connection process of the magnetic interface, and protect the safety of the device.

[0155] (2) Power-off control:

[0156] When the magnetic connection between the connected ultrasonic imaging device 100 and the power supply device 200 is released, the connection between the host interface 120 and the line-side interface 210 is about to be disconnected and enters an unstable connection state. The power-on / off detection circuit 151 of the ultrasonic imaging device 100 detects that the voltage and / or current output by the host interface is lower than the connection threshold, and the device control circuit 150 controls the second control switch 140 to disconnect accordingly, so as to disconnect the subsequent load 110 from the circuit of the ultrasonic imaging system;

[0157] After the magnetic connection between the host interface 120 and the line-side interface 210 is disconnected, the detection terminal 212 can no longer receive the characteristic signal fed back by the host interface 120, and the line-side control circuit 240 will control the first control switch 230 to disconnect, so that the power supply module 220 no longer supplies power to the line-side interface 210.

[0158] The above power-off control process involves detection and control links such as host-side power-off detection and interface connection detection. Some embodiments of the present application may include all or part of the above detection and control links to avoid any accidental sparking and temperature rise when disconnecting the magnetic interface, and protect the safety of the device.

[0159] It can be understood that the embodiments of the present application also provide a power supply device for an ultrasonic imaging device, which can be referred to in combination with the above embodiments Figure 1 、 Figures 4 to 10 。

[0160] Specifically, the power supply device for the ultrasonic imaging device includes:

[0161] A line-side interface is provided with a first magnetic member, and the first magnetic member is used for magnetic adsorption with the host interface of the ultrasonic imaging device to connect the line-side interface to the host interface;

[0162] A power supply module for providing electrical energy to the line-side interface;

[0163] A first control switch, which is connected to a power supply module and a line-side interface, and is used to controllably switch between a conducting state and a disconnecting state so as to connect or disconnect the power supply module and the line-side interface;

[0164] A line-side control circuit, which is respectively signal-connected to the line-side interface and the first control switch, and is used to detect whether the line-side interface is connected to the host interface of the ultrasonic imaging device; if it is detected that the line-side interface is connected to the host interface, a first control signal is sent to the first control switch to make the first control switch conduct, so as to connect the line-side interface and the power supply module and supply power to the host interface.

[0165] Exemplarily, the line-side interface includes a detection terminal for electrically connecting to the ultrasonic imaging device;

[0166] The line-side control circuit includes an on-site detection circuit, the input end of the on-site detection circuit is connected to the detection terminal, and is used to detect whether the signal received by the detection terminal from the ultrasonic imaging device conforms to the characteristic signal representing the ultrasonic imaging device, and determines that the line-side interface is connected to the host interface when the characteristic signal is detected.

[0167] Exemplarily, the on-site detection circuit is used to judge whether the detection terminal is connected to the ultrasonic imaging device according to the impedance connected to the detection terminal.

[0168] Exemplarily, the on-site detection circuit includes a first comparator and a second comparator;

[0169] The first input end of the first comparator is connected to a first reference voltage, the second input end of the second comparator is connected to a second reference voltage lower than the first reference voltage, the second input end of the first comparator and the first input end of the second comparator are connected to the detection terminal, and the output ends of the first comparator and the second comparator are connected to the first control switch;

[0170] Wherein, when the device signal output by the detection terminal is greater than the second reference voltage and less than the first reference voltage, the first comparator or the second comparator outputs a first control signal to the first control switch.

[0171] Exemplarily, the line-side control circuit further includes a first power-on control circuit connected to the first control switch, and is used for: when the first control switch conducts, controlling the voltage and / or current output by the line-side interface to the host interface to gradually rise to the rated voltage of the load and / or the rated current of the load.

[0172] Exemplarily, the power supply device further includes a second delay circuit connected to the first control switch, and is used for connecting the line-side interface and the power supply module to supply power to the host interface after a second preset time when the line-side control circuit detects that the line-side interface is connected to the host interface.

[0173] Exemplarily, the power supply device includes a first sampling circuit connected between the line-side interface and the power module; the line-side control circuit detects the sampling current transmitted from the power module to the line-side interface through the first sampling circuit, and disconnects the line-side interface and the power module when the sampling current of the line-side interface is not less than the first overcurrent threshold.

[0174] The specific principle and implementation manner of the power supply device provided in the embodiments of the present application are similar to those of the power supply device in the ultrasonic imaging system in the foregoing embodiments, and will not be described herein again.

[0175] It can be understood that an ultrasonic imaging device provided in the embodiments of the present application can be referred to in combination with the above embodiments Figures 1 to 3 、 Figures 5 to 11 。

[0176] Specifically, the ultrasonic imaging device includes:

[0177] A load for performing ultrasonic imaging;

[0178] A host interface provided with a second magnetic member, and the second magnetic member is used for magnetically adsorbing with the line-side interface of the power supply device of the ultrasonic imaging device so that the host interface is connected to the line-side interface of the power supply device;

[0179] Wherein, when the host interface is connected to the line-side interface, the host interface outputs a characteristic signal representing the ultrasonic imaging device to the line-side interface.

[0180] Exemplarily, the ultrasonic imaging device further includes:

[0181] A second control switch connected to the host interface and the load, and used for controllably switching between the on state and the off state to connect or disconnect the host interface and the load;

[0182] A device control circuit respectively connected to the second control switch and the host interface, and used for sending a second control signal to the second control switch to connect the host interface and the load to supply power to the load when detecting that the voltage and / or current output by the host interface is not less than a preset connection threshold.

[0183] Exemplarily, the device control circuit further includes a second power-on control circuit connected to the second control switch, and used for controlling the voltage and / or current output by the host interface to the load to gradually rise to the rated voltage of the load and / or the rated current of the load when the host interface and the load are connected.

[0184] Exemplarily, the load includes a processor connected to the host interface, and the device further includes a voltage detection circuit connected to the second control switch and the processor, and used for outputting a valid detection signal to the processor when detecting that the voltage output by the second control switch reaches a preset working voltage, and the processor enables the second control switch to supply power to the load according to the valid detection signal.

[0185] The specific principle and implementation method of the ultrasonic imaging device provided in the embodiments of the present application are similar to those of the ultrasonic imaging device in the ultrasonic imaging system of the foregoing embodiments, and will not be elaborated herein.

[0186] Please refer to the above embodiments Figure 12 , as Figure 12 shown in the schematic flowchart of the power supply method of an ultrasonic imaging system provided by an embodiment of the present application. The power supply method is used for the foregoing power supply device.

[0187] As Figure 12 shown, the power supply method of the ultrasonic imaging system includes step S110 and step S120.

[0188] Step S110: Detect whether the line-side interface is connected to the host interface of the ultrasonic imaging device.

[0189] Step S120: If it is detected that the line-side interface is connected to the host interface, send a first control signal to the first control switch to turn on the first control switch, so as to connect the line-side interface and the power supply module and supply power to the host interface.

[0190] Exemplarily, the method further includes:

[0191] When the first control switch is turned on, the voltage and / or current output from the line-side interface to the host interface gradually rises to the rated voltage of the load and / or the rated current of the load.

[0192] Exemplarily, if it is detected that the line-side interface is connected to the host interface, sending a first control signal to the first control switch includes:

[0193] If it is detected that the line-side interface is connected to the host interface, send a first control signal to the first control switch after a second preset time period.

[0194] Exemplarily, the ultrasonic imaging device further includes a second control switch connected to the host interface and the load;

[0195] The method further includes:

[0196] Detect the voltage and / or current output from the line-side interface to the host interface;

[0197] If the voltage and / or current output from the line-side interface to the host interface is not less than a preset connection threshold, send a second control signal to the second control switch to connect the host interface and the load so that the host interface supplies power to the load.

[0198] Exemplarily, the connection threshold is 70%-100% of the rated voltage of the load and / or the rated current of the load.

[0199] Exemplarily, the method further includes:

[0200] When the host interface is connected to the load, control the voltage and / or current output from the host interface to the load to gradually rise to the rated voltage of the load and / or the rated current of the load.

[0201] Exemplarily, the method further includes:

[0202] Detect the voltage output by the second control switch;

[0203] When it is detected that the voltage output by the second control switch reaches the preset operating voltage, enable the second control switch to supply power to the load.

[0204] Exemplarily, detecting whether the line-side interface is connected to the host interface of the ultrasonic imaging device includes:

[0205] Detect whether the signal received from the detection terminal belongs to the characteristic signal representing the ultrasonic imaging device;

[0206] If the characteristic signal is detected, determine that the line-side interface is connected to the host interface.

[0207] The specific principle and implementation manner of the power supply method of the ultrasonic imaging device provided by the embodiments of the present application are similar to those of the ultrasonic imaging system in the foregoing embodiments, and will not be elaborated here.

[0208] Please refer to the above embodiments in conjunction with Figure 13 , as Figure 13 shown is a power-off control method for an ultrasonic imaging system provided by an embodiment of the present application.

[0209] As Figure 13 shown, the power-off control method of the ultrasonic imaging system includes step S210.

[0210] Step S210: When the magnetic adsorption between the first magnetic member and the second magnetic member is released, the device control circuit controls the second control switch to enter the off state to disconnect the load from the host interface.

[0211] Exemplarily, the device control circuit controls the second control switch to enter the off state, including:

[0212] Detect the voltage and / or current output from the line-side interface to the host interface;

[0213] If the voltage and / or current output by the host interface is less than the preset connection threshold, send a fourth control signal to the second control switch to turn off the second control switch.

[0214] Exemplarily, the power supply device further includes:

[0215] A first control switch, connected to the power supply module and the line-side interface, for controllably switching between the on and off states to connect or disconnect the power supply module and the line-side interface; and

[0216] A line - side control circuit is respectively connected to the line - side interface and the first control switch in a signal - connection manner;

[0217] The method further includes: when the magnetic adsorption between the first magnetic member and the second magnetic member is released, the line - side control circuit controls the first control switch to enter an off state to disconnect the power supply module from the line - side interface.

[0218] Exemplarily, the line - side control circuit controls the first control switch to enter an off state, including:

[0219] Detect whether the line - side interface is connected to the host interface of the ultrasonic imaging device;

[0220] If it is detected that the line - side interface is not connected to the host interface, a third control signal is sent to the first control switch to make the first control switch turn off, so as to disconnect the connection between the line - side interface and the power supply module.

[0221] Exemplarily, the line - side interface includes detection terminals for electrically connecting to the ultrasonic imaging device;

[0222] Detecting whether the line - side interface is connected to the host interface of the ultrasonic imaging device includes:

[0223] Detect whether the signal received from the detection terminal belongs to a characteristic signal representing the ultrasonic imaging device;

[0224] If no characteristic signal is detected, it is determined that the magnetic adsorption between the first magnetic member and the second magnetic member is released and the line - side interface is not connected to the host interface.

[0225] Exemplarily, before the line - side control circuit controls the first control switch to turn off, the device control circuit controls the second control switch to turn off.

[0226] The ultrasonic imaging system and its power - supply method, the ultrasonic imaging device and its power - supply device provided by the above embodiments of the present application connect the power - supply device and the ultrasonic imaging device in a magnetic - adsorption manner, which does not require the user to plug and unplug forcefully, and the line - side interface and the host interface can be connected in a shorter time, reducing the user's working intensity and facilitating the user's use; also, by detecting the characteristic signal of the ultrasonic imaging device, when the line - side interface of the power - supply device is connected to the ultrasonic imaging device, the power - supply module of the power - supply device supplies power to the interface, which can avoid the large temperature rise and abnormal discharge and sparking caused by the large impedance at the moment of interface contact in the plug - and - socket connection method, and prolong the service life.

[0227] It should be understood that the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0228] It should be noted that the descriptions such as "first", "second", etc. used in the specification and appended claims of this application are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features.

[0229] It should also be understood that the term " / and" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0230] As described above, the above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. An ultrasonic imaging system, characterized in that, It includes an ultrasonic imaging device and a power supply device; the ultrasonic imaging device includes a load and a host interface provided with a second magnetic member, and the power supply device supplies power to the ultrasonic imaging device by connecting to the host interface; The power supply device includes: A line-side interface provided with a first magnetic member, and the first magnetic member is used for magnetically adsorbing with the host interface so that the line-side interface is connected to the host interface; A power supply module for supplying electrical energy to the line-side interface; A first control switch connected to the power supply module and the line-side interface, and is used for controllably switching between a conducting state and a disconnecting state so as to connect or disconnect the power supply module and the line-side interface; A line-side control circuit is respectively signal-connected to the line-side interface and the first control switch, and is used for detecting a device signal output by the line-side interface, and when detecting that the device signal is a characteristic signal representing the ultrasonic imaging device, sending a first control signal to the first control switch to make the first control switch conduct, so as to connect the line-side interface and the power supply module and supply power to the host interface; when the line-side control circuit does not detect that the device signal is a characteristic signal representing the ultrasonic imaging device, the line-side interface and the power supply module are not connected.

2. The system according to claim 1, characterized in that, The ultrasonic imaging device includes a characteristic circuit for providing the characteristic signal; The line-side control circuit includes an in-position detection circuit; the line-side interface includes a detection terminal, which is used for connecting to the characteristic circuit when the line-side interface is connected to the host interface to output the characteristic signal to the in-position detection circuit.

3. The system according to claim 2, wherein The characteristic circuit includes an impedance circuit; The in-position detection circuit is used for detecting the impedance connected to the detection terminal and judging whether the detection terminal is connected to the characteristic circuit according to the impedance connected to the detection terminal.

4. The system according to claim 3, characterized in that, The impedance circuit further includes a first delay circuit, which is used for making the impedance connected to the detection terminal stabilize at a preset impedance value after a preset time length after the host interface is connected to the line-side interface.

5. The system according to claim 2, wherein The in-position detection circuit includes a first comparator and a second comparator; A first input terminal of the first comparator is connected to a first reference voltage, a second input terminal of the second comparator is connected to a second reference voltage lower than the first reference voltage, a second input terminal of the first comparator and a first input terminal of the second comparator are connected to the detection terminal, and an output terminal of the first comparator and an output terminal of the second comparator are connected to the first control switch; Wherein, when the device signal output by the detection terminal is greater than the second reference voltage and less than the first reference voltage, the first comparator or the second comparator outputs the first control signal to the first control switch.

6. The system according to claim 2, characterized in that When the host interface is connected to the line-side interface, the characteristic circuit transmits a feedback electrical signal to the line-side interface according to the electrical signal output by the line-side interface, and the feedback electrical signal is the characteristic signal.

7. The system according to claim 2, wherein The characteristic circuit includes a first memory storing the characteristic signal; The line-side interface further includes communication terminals, which are used for signal connection with the characteristic circuit when the line-side interface is connected to the host interface; the in-place detection circuit reads the characteristic signal in the first memory through the communication terminals.

8. The system according to claim 1, wherein One of the line-side interface and the host interface includes a Hall element, and a third magnetic part is provided on the other; when the line-side interface is connected to the host interface, the Hall element corresponds to the position of the third magnetic part; The line-side control circuit is used to detect the output of the Hall element and judge whether the line-side interface is connected to the host interface according to the output of the Hall element.

9. The system according to claim 1, wherein One of the line-side interface and the host interface includes a distance sensor, which is used for output during the connection process of the line-side interface and the host interface; The line-side control circuit is used to detect the output of the distance sensor and judge whether the line-side interface is connected to the host interface according to the output of the distance sensor.

10. The system according to claim 1, wherein One of the line-side interface and the host interface includes a touch switch, which is used for output when the line-side interface is connected to the host interface; The line-side control circuit is used to detect the output of the touch switch and judge whether the line-side interface is connected to the host interface according to the output of the touch switch.

11. The system according to any one of claims 1 to 10, characterized in that, The line-side control circuit further includes a first power-on control circuit connected to the first control switch, which is used for: when the first control switch is turned on, controlling the voltage and / or current output from the line-side interface to the host interface to gradually rise to the rated voltage of the load and / or the rated current of the load.

12. The system according to any one of claims 1 to 10, characterized in that, The power supply device further includes a second delay circuit connected to the first control switch, which is used for connecting the line-side interface and the power supply module to supply power to the host interface after a preset time when the line-side control circuit detects that the device signal is a characteristic signal representing the ultrasonic imaging device.

13. The system according to any one of claims 1 to 10, characterized in that, The power supply device includes a first sampling circuit connected between the line-side interface and the power supply module; The line-side control circuit detects the sampling current transmitted from the power supply module to the line-side interface through the first sampling circuit, and disconnects the line-side interface and the power supply module when the sampling current of the line-side interface is not less than the first overcurrent threshold.

14. The system according to any one of claims 1 to 10, characterized in that, The line-side control circuit includes a first temperature sensor arranged on the line-side interface, and the first temperature sensor is used for outputting a line-side temperature value according to the temperature change of the line-side interface; The line-side control circuit is further used for disconnecting the line-side interface and the power supply module when the line-side temperature value is not less than the temperature threshold.

15. The system according to any one of claims 1 to 10, characterized in that, The line-side control circuit is further used to implement: If the characteristic signal is not detected, controlling the first control switch to disconnect to disconnect the line-side interface and the power supply module.

16. The system according to any one of claims 1 to 10, characterized in that, The ultrasonic imaging device further includes: A second control switch, connected to the host interface and the load, which is used for controllably switching between the on and off states to connect or disconnect the host interface and the load; and The device control circuit is respectively connected to the second control switch and the host interface, and is configured to send a second control signal to the second control switch when detecting that the voltage and / or current output by the host interface is not less than a preset connection threshold, so as to connect the host interface and the load and enable the host interface to supply power to the load.

17. The system according to claim 16, wherein The device control circuit includes a second power-on control circuit connected to the second control switch, and is configured to control the voltage and / or current output by the host interface to the load to gradually rise to the rated voltage of the load and / or the rated current of the load when the host interface and the load are connected.

18. The system according to claim 16, wherein The load includes a processor connected to the host interface; The ultrasonic imaging device further includes: a voltage detection circuit connected to the second control switch and the processor, and is configured to output a valid detection signal to the processor when detecting that the voltage output by the second control switch reaches a preset operating voltage, and the processor enables the second control switch to supply power to the load according to the valid detection signal.

19. A power supply device for an ultrasonic imaging device, characterized in that, The power supply device includes: A line-side interface provided with a first magnetic member, and the first magnetic member is configured to magnetically adsorb to the host interface of the ultrasonic imaging device so that the line-side interface is connected to the host interface; A power supply module configured to supply power to the line-side interface; A first control switch, and the first control switch is connected to the power supply module and the line-side interface, and is configured to controllably switch between a conducting state and a disconnecting state so as to connect or disconnect the power supply module and the line-side interface; A line-side control circuit is respectively connected to the line-side interface and the first control switch in a signal manner, and is configured to detect whether the line-side interface is connected to the host interface of the ultrasonic imaging device; if it is detected that the line-side interface is connected to the host interface, a first control signal is sent to the first control switch to make the first control switch conduct, so as to connect the line-side interface and the power supply module and supply power to the host interface; the line-side interface and the power supply module are not connected when the line-side control circuit does not detect that the device signal is a characteristic signal representing the ultrasonic imaging device.

20. The device according to claim 19, characterized in that, The line-side interface includes a detection terminal for electrically connecting to the ultrasonic imaging device; The line-side control circuit includes an in-position detection circuit, and an input end of the in-position detection circuit is connected to the detection terminal, and is configured to detect whether the signal received by the detection terminal from the ultrasonic imaging device conforms to the characteristic signal representing the ultrasonic imaging device, and determine that the line-side interface is connected to the host interface when the characteristic signal is detected.

21. The device according to claim 20, wherein, The in-position detection circuit is configured to judge whether the detection terminal is connected to the ultrasonic imaging device according to the impedance connected to the detection terminal.

22. The device according to claim 20, characterized in that, The in-position detection circuit includes a first comparator and a second comparator; The first input terminal of the first comparator is connected to a first reference voltage, the second input terminal of the second comparator is connected to a second reference voltage lower than the first reference voltage, the second input terminal of the first comparator and the first input terminal of the second comparator are connected to the detection terminal, and the output terminals of the first comparator and the second comparator are connected to the first control switch; Wherein, when the device signal output by the detection terminal is greater than the second reference voltage and less than the first reference voltage, the first comparator or the second comparator outputs the first control signal to the first control switch.

23. The device according to claim 19, characterized in that, The line-side interface is provided with a distance sensor for outputting during the connection process between the line-side interface and the host interface; The line-side control circuit is used to detect the output of the distance sensor and determine whether the line-side interface is connected to the host interface according to the output of the distance sensor.

24. The device according to claim 19, characterized in that, The line-side interface is provided with a touch switch for outputting when the line-side interface is connected to the host interface; The line-side control circuit is used to detect the output of the touch switch and determine whether the line-side interface is connected to the host interface according to the output of the touch switch.

25. The device according to any one of claims 19 to 24, characterized in that, The line-side control circuit further includes a first power-on control circuit connected to the first control switch, which is used for: when the first control switch is turned on, controlling the voltage and / or current output by the line-side interface to the host interface to gradually rise to the rated load voltage and / or the rated load current; And / or, the power supply device further includes a second delay circuit connected to the first control switch, which is used for connecting the line-side interface and the power supply module to supply power to the host interface after a preset time when the line-side control circuit detects that the line-side interface is connected to the host interface; And / or, the power supply device includes a first sampling circuit connected between the line-side interface and the power supply module; the line-side control circuit detects the sampling current transmitted by the power supply module to the line-side interface through the first sampling circuit, and disconnects the line-side interface and the power supply module when the sampling current of the line-side interface is not less than the first overcurrent threshold.

26. A power supply method for an ultrasonic imaging system based on claim 1, characterized in that, The method includes: Detecting whether the line-side interface is connected to the host interface of the ultrasonic imaging device; If it is detected that the line-side interface is connected to the host interface, a first control signal is sent to the first control switch to turn on the first control switch, so as to connect the line-side interface and the power supply module and supply power to the host interface.

27. The method according to claim 26, wherein It further includes: When the first control switch is turned on, controlling the voltage and / or current output by the line-side interface to the host interface to gradually rise to the rated load voltage and / or the rated load current.

28. The method according to claim 26, wherein The step of if it is detected that the line-side interface is connected to the host interface, then sending a first control signal to the first control switch includes: If it is detected that the line-side interface is connected to the host interface, a first control signal is sent to the first control switch after a preset time.

29. The method according to claim 26, wherein The ultrasonic imaging device further includes a second control switch connected between the host interface and the load; The method further includes: Detect the voltage and / or current output from the line-side interface to the host interface; When the voltage and / or current output from the line-side interface to the host interface is not less than a preset connection threshold, send a second control signal to the second control switch to connect the host interface and the load so that the host interface supplies power to the load.

30. The method according to claim 29, wherein The connection threshold is 70%-100% of the rated load voltage and / or rated load current of the load.

31. The method according to claim 29, wherein It further includes: When the host interface and the load are connected, control the voltage and / or current output from the host interface to the load to gradually rise to the rated load voltage and / or rated load current.

32. The method according to claim 29, wherein It further includes: Detect the voltage output by the second control switch; When it is detected that the voltage output by the second control switch reaches the preset operating voltage, enable the second control switch to supply power to the load.

33. The method according to any one of claims 26-32, characterized in that, The detection of whether the line-side interface is connected to the host interface of the ultrasonic imaging device includes: Detect whether the signal received from the detection terminal belongs to the characteristic signal representing the ultrasonic imaging device; If the characteristic signal is detected, it is determined that the line-side interface is connected to the host interface.

34. An ultrasonic imaging device, characterized in that, The ultrasonic imaging device includes: A load for performing ultrasonic imaging; A host interface provided with a second magnetic member for magnetically adsorbing with the line-side interface of the power supply device of the ultrasonic imaging device so that the host interface is connected to the line-side interface of the power supply device, and the power supply device includes the power supply device according to any one of claims 19-25; Wherein, when the host interface is connected to the line-side interface, the host interface outputs a characteristic signal representing the ultrasonic imaging device to the line-side interface, so that the power supply device controls the conduction of the first control switch signal between the power module and the line-side interface to connect the line-side interface and the power module, so that the line-side interface supplies power to the host interface; the line-side interface and the power module are not connected when the host interface does not output the characteristic signal.

35. The device according to claim 34, characterized in that, It further includes: A second control switch connected to the host interface and the load, for controllably switching between the on and off states to connect or disconnect the host interface and the load; A device control circuit respectively connected to the second control switch and the host interface, for sending a second control signal to the second control switch when it is detected that the voltage and / or current output from the host interface is not less than a preset connection threshold, to connect the host interface and the load so that the host interface supplies power to the load.

36. The device according to claim 35, characterized in that The device control circuit further includes a second power-on control circuit connected to the second control switch, for controlling the voltage and / or current output from the host interface to the load to gradually rise to the rated load voltage and / or rated load current when the host interface and the load are connected; And / or, the load includes a processor connected to the host interface, and the device further includes a voltage detection circuit connected to the second control switch and the processor, configured to output a valid detection signal to the processor when detecting that the voltage output by the second control switch reaches a preset operating voltage, and the processor enables the second control switch to supply power to the load according to the valid detection signal.

Images