Active decompression device, compression device and mammography apparatus

Abstract

This application relates to an active decompression device, a compression device, and a mammography device. The active decompression device includes a detection and control circuit, an energy source, and a discharge circuit. The detection and control circuit is connected to an external power supply and the discharge circuit, and the discharge circuit is also connected to the energy source. The detection and control circuit is used to acquire the compression force signal of the compressed object, and, when the compression force signal meets the preset force signal requirements, controls the discharge circuit to conduct based on the compression force signal, and detects whether the external power supply is cut off. The energy source is used to supply power to the detection and control circuit when the external power supply is cut off. The detection and control circuit is also used to control the lifting and lowering of the compression plate in the compression device according to the compression force signal. In the embodiments of this application, an additional energy source is designed into the compression device. During the compression process using the compression device, if the external power supply is detected to be cut off and there is compression force, the compression plate can be actively decompressed.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an active decompression device, a compression device, and a mammography device. Background Technology

[0002] The breast compression device on a mammography machine controls the vertical movement of the compression plate to achieve lifting and compression of the breast. According to safety regulations, the compression plate should reliably rise when the power is off. Due to the motor brake, the compression plate cannot be lifted by external force after power is off; generally, a technician needs to use a suitable mechanical decompression device to release the pressure.

[0003] However, when using a mechanical decompression device to decompress after the breast compression device is powered off, the duration of compression on the patient depends on the technician's judgment and treatment time. Summary of the Invention

[0004] Therefore, it is necessary to provide an active decompression device, a compression device, and a mammography device that can improve decompression efficiency in response to the above-mentioned technical problems.

[0005] In a first aspect, this application provides an active decompression device, the device comprising a detection and control circuit, an energy source, and a discharge circuit; the detection and control circuit is connected to an external power source and the discharge circuit; the discharge circuit is also connected to the energy source.

[0006] The detection and control circuit is used to acquire the pressure force signal of the object being compressed, and when the pressure force signal meets the preset force signal requirements, control the discharge circuit to be turned on based on the pressure force signal, and detect whether the external power supply is cut off.

[0007] The energy source is used to supply power to the detection and control circuit in the event of a power outage of the external power source;

[0008] The detection and control circuit is also used to control the lifting and lowering of the pressure plate in the pressure device according to the pressure signal.

[0009] In one embodiment, the detection and control circuit includes a controller and a signal detection circuit; the controller is connected to the signal detection circuit and the discharge circuit respectively, and the discharge circuit is also connected to the energy source and the signal detection circuit;

[0010] The signal detection circuit is used to acquire the pressure signal, and when the pressure signal meets the preset force signal requirements, control the discharge circuit to turn on based on the pressure signal, acquire the electrical signal of the external power supply, and send the pressure signal and the electrical signal to the controller.

[0011] The controller is used to determine whether the external power supply is cut off based on the electrical signal, and to control the lifting and lowering of the pressure plate based on the pressure force signal when the external power supply is cut off.

[0012] In one embodiment, the detection and control circuit includes a controller and a signal detection circuit; the controller is connected to the signal detection circuit and the discharge circuit respectively, and the discharge circuit is also connected to the energy source and the signal detection circuit.

[0013] The signal detection circuit is used to acquire the pressure signal and send the pressure signal to the controller;

[0014] The controller is used to control the discharge circuit to be turned on according to the pressure signal when the pressure signal meets the preset force signal requirements;

[0015] The controller is also configured to acquire the electrical signal of the external power source sent by the signal detection circuit, determine whether the external power source is disconnected based on the electrical signal, and control the lifting and lowering of the pressure plate based on the pressure force signal when the external power source is disconnected.

[0016] In one embodiment, the discharge circuit includes a switching circuit and an anti-backflow circuit. A first terminal of the switching circuit is connected to the energy source, a second terminal of the switching circuit is connected to the first terminal of the anti-backflow circuit, and a third terminal of the switching circuit is connected to the first terminal of the signal detection circuit. The second terminal of the anti-backflow circuit is connected to the controller, the second terminal of the signal detection circuit, and the third terminal of the signal detection circuit. The third terminal of the anti-backflow circuit is connected to the fourth terminal of the signal detection circuit and the external power supply.

[0017] The signal detection circuit is used to control the switching circuit to turn on when the pressure signal meets the preset force signal requirements, so that the energy source can supply power to the controller and the signal detection circuit through the switching circuit and the anti-backflow circuit when the external power supply is cut off.

[0018] In one embodiment, the discharge circuit includes a switching circuit and an anti-backflow circuit. A first terminal of the switching circuit is connected to the energy source, a second terminal of the switching circuit is connected to the first terminal of the anti-backflow circuit, and a third terminal of the switching circuit is connected to the first terminal of the signal detection circuit. The second terminal of the anti-backflow circuit is connected to the controller, the second terminal of the signal detection circuit, and the third terminal of the signal detection circuit. The third terminal of the anti-backflow circuit is connected to the fourth terminal of the signal detection circuit and the external power supply.

[0019] The controller is used to control the control switch circuit to turn on when the pressure signal meets the preset force signal requirements, so that the energy source supplies power to the controller and the signal detection circuit through the switch circuit and the anti-backflow circuit.

[0020] In one embodiment, the device further includes a charging circuit, a first terminal of which is connected to the external power source, and a second terminal of which is connected to the energy source.

[0021] The charging circuit is used to charge the energy source by the external power source when the external power source is not interrupted.

[0022] In one embodiment, the backflow prevention circuit includes a first semiconductor device and a second semiconductor device; a first terminal of the first semiconductor device is connected to the external power supply, and a second terminal of the first semiconductor device is connected to the controller, a second terminal of the signal detection circuit, and a third terminal of the signal detection circuit; a first terminal of the second semiconductor device is connected to a second terminal of the switching circuit, and a second terminal of the second semiconductor device is connected to a second terminal of the first semiconductor device.

[0023] Wherein, the on-state voltage drop of the first semiconductor device is less than the on-state voltage drop of the second semiconductor device, or the voltage of the energy source is less than the voltage of the external power supply.

[0024] In one embodiment, the signal detection circuit includes a pressure detection circuit and a power supply signal detection circuit; the first terminal of the pressure detection circuit is connected to the third terminal of the switching circuit, the second terminal of the pressure detection circuit is connected to the second terminal of the anti-backflow circuit, and the third terminal of the pressure detection circuit is connected to the controller; the first terminal of the power supply signal detection circuit is connected to the external power supply, the second terminal of the power supply signal detection circuit is connected to the controller, and the third terminal of the power supply signal detection circuit is connected to the second terminal of the anti-backflow circuit.

[0025] The pressure detection circuit is used to acquire the pressure signal collected by the external sensor, send the pressure signal to the controller, and control the discharge circuit to be turned on according to the pressure signal when the pressure signal meets the preset force signal requirements.

[0026] The power supply signal detection circuit is used to acquire the electrical signal of the external power supply.

[0027] Secondly, this application also provides a compression device, including a compression plate and an active decompression device as provided in the first aspect.

[0028] Thirdly, this application also provides a mammography device, including the compression device provided in the second aspect.

[0029] The aforementioned active decompression device, compression device, and mammography equipment include an active decompression device comprising a detection and control circuit, an energy source, and a discharge circuit. The detection and control circuit is connected to an external power supply and the discharge circuit. The discharge circuit is also connected to the energy source. The detection and control circuit is used to acquire the compression force signal of the compressed object, and, when the compression force signal meets the preset force signal requirements, controls the discharge circuit to conduct based on the compression force signal, and detects whether the external power supply is cut off. The energy source is used to supply power to the detection and control circuit when the external power supply is cut off. The detection and control circuit is also used to control the lifting and lowering of the compression plate in the compression device according to the compression force signal. In this embodiment, an additional energy source is designed into the compression device. During the compression process using the compression device, if an external power supply failure is detected and there is compression force, the power supply of the compression device can be switched to the energy source, which supplies power to the detection and control circuit. At this time, the detection and control circuit can control the lifting and lowering of the compression plate in the compression device according to the compression force signal. When the compression force disappears, the energy source stops supplying power. Therefore, the active decompression device of this application can automatically determine whether it is necessary to automatically release the pressure according to the scenario, without the need for manual assistance from the corresponding mechanical decompression device, thus reducing the requirements for technicians to handle emergencies. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of an active decompression device in one embodiment;

[0032] Figure 2This is a flowchart illustrating an active decompression method in one embodiment;

[0033] Figure 3 This is a schematic diagram of the active decompression device in another embodiment;

[0034] Figure 4 This is a schematic diagram of an active decompression device in another embodiment.

[0035] Explanation of reference numerals in the attached figures:

[0036] 11. Detection and control circuit; 12. Energy source; 13. Discharge circuit;

[0037] 21. The object being compressed; 22. External power source; 23. Compression plate;

[0038] 111. Controller; 112. Signal detection circuit;

[0039] 131. Switching circuit; 132. Backflow prevention circuit;

[0040] 14. Charging circuit; D1, first semiconductor device; D2, second semiconductor device;

[0041] 1121. Pressure detection circuit; 1122. Power supply signal detection circuit;

[0042] 24. External sensors. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0044] In the description of this application, the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0045] When used herein, the singular forms of “a,” “an,” and “ / the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0046] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] Currently, the solutions for emergency decompression of breast compression are basically traditional mechanical decompression, which mainly achieves decompression by designing mechanical decompression structures. There are two common technical implementation solutions.

[0050] The first common approach is as follows: The technician needs to use a mechanical button to disengage the internal lifting mechanism from the motor drive gear, and then manually raise the compression plate. The duration of compression on the patient depends on the technician's judgment and treatment time.

[0051] The second common solution is as follows: Automatic decompression is achieved through elastic mechanical devices such as springs. For example, a magnetic compression connection structure or an electromagnet can be used. When power is off, the electromagnet demagnetizes, the magnetic compression connection structure is no longer attracted, and the compressed spring beneath it lifts the connection structure, automatically releasing the pressure plate. However, prolonged use of these elastic mechanical devices may lead to problems such as pressure attenuation and errors in pressure detection.

[0052] Figure 1 This is a schematic diagram of an active decompression device in one embodiment, such as... Figure 1As shown, the active decompression device includes a detection and control circuit 11, an energy source 12, and a discharge circuit 13. The detection and control circuit 11 is connected to an external power supply 22 and the discharge circuit 13. The discharge circuit 13 is also connected to the energy source 12. The detection and control circuit 11 is used to acquire the pressure force signal of the object being compressed 21. When the pressure force signal meets the preset pressure signal requirements, it controls the discharge circuit 13 to be turned on based on the pressure force signal, and detects whether the external power supply 22 is de-energized. The energy source 12 is used to supply power to the detection and control circuit 11 when the external power supply 22 is de-energized. The detection and control circuit 11 is also used to control the lifting and lowering of the compression plate 23 in the compression device according to the pressure force signal.

[0053] In this embodiment of the application, combined with Figure 1 and Figure 2 As shown, the active decompression device includes a detection and control circuit 11, an energy source 12, and a discharge circuit 13. The detection and control circuit 11 is connected to an external power source 22 and the discharge circuit 13; the discharge circuit 13 is also connected to the energy source 12. The detection and control circuit 11 is connected to the object being compressed 21, the external power source 22, and the compression plate 23. The connection of the detection and control circuit 11 to the object being compressed 21 is essentially a connection between the detection and control circuit 11 and the compression platform on which the object being compressed 21 is placed (which can also be understood as a connection to an external sensor on the compression platform). By acquiring the compression force signal collected by the external sensor, the compression force signal of the object being compressed 21 is obtained. When the compression force signal meets the preset force signal requirements (i.e., when there is compression force), the detection and control circuit 11 controls the discharge circuit 13 to conduct; when there is no compression force, the discharge circuit 13 remains in its original state, i.e., in the off state, and continuously acquires the compression force signal of the object being compressed 21.

[0054] When pressure is applied, the detection and control circuit 11 controls the discharge circuit 13 to conduct, acquiring the electrical signal from the external power supply 22 and determining whether the external power supply 22 is de-energized. If the external power supply 22 is de-energized, the detection and control circuit 11 controls the lifting and lowering of the pressure plate 23 based on the pressure signal. Optionally, the external power supply 22 can also simultaneously supply power to the energy source 12. When the external power supply 22 is de-energized, the system automatically enters decompression mode, releasing the stored electrical energy from the energy source 12 to the detection and control circuit 11 through the discharge circuit 13. The detection and control circuit 11 then releases the brake, driving the motor to reverse and lift the pressure plate 23. When the pressure disappears, the energy source 12 stops supplying power, and the brake re-engages, enabling the pressure plate 23 to be actively lifted. Generally, it will not be raised to the default maximum position when the external power supply 22 is energized; the pressure plate 23 only needs to rise to the height corresponding to the disappearance of the pressure.

[0055] Furthermore, during the process of the detection control circuit 11 controlling the lifting and lowering of the pressure plate 23 according to the pressure signal, if no pressure is detected, the detection control circuit 11 controls the discharge circuit 13 to disconnect.

[0056] Optionally, the detection control circuit 11 may include a controller and a signal detection circuit. Therefore, the detection control circuit 11 is used to acquire the pressure force signal of the compressed object 21, and when the pressure force signal meets the preset force signal requirements, to control the discharge circuit 13 to be turned on based on the pressure force signal, and to detect whether the external power supply 22 is de-energized. This can be done in the following two ways:

[0057] In one possible implementation, the signal detection circuit detects the pressure signal and determines whether the pressure signal meets the preset pressure signal requirement. If the pressure signal meets the preset pressure signal requirement, it sends a self-locking signal to the discharge circuit 13, and the discharge circuit 13 is turned on. Further, the signal detection circuit acquires the electrical signal from the external power supply 22 and sends the electrical signal to the controller. The controller detects whether the external power supply 22 is de-energized. If the external power supply 22 is de-energized, the energy source 12 supplies power to the detection control circuit 11. The controller controls the pressure plate 23 to rise and fall according to the acquired pressure signal until there is no pressure. That is, only when the external power supply 11 is de-energized and pressure exists will the controller control the pressure plate 23 to rise until there is no pressure or the pressure is less than a preset value.

[0058] In another possible implementation, the signal detection circuit detects the pressure signal and sends it to the controller. The controller determines whether the pressure signal meets the preset pressure signal requirements. If the pressure signal meets the preset pressure signal requirements, it sends a self-locking signal to the discharge circuit 13, which then conducts. Further, the signal detection circuit acquires the electrical signal from the external power supply 22 and sends it to the controller. The controller detects whether the external power supply 22 is de-energized. If the external power supply 22 is de-energized, the energy source 12 supplies power to the detection and control circuit 11. The controller controls the lifting and lowering of the pressure plate 23 according to the acquired pressure signal until the pressure is eliminated.

[0059] Optionally, the external power source 22 can be AC ​​power or a first mobile power source.

[0060] Optionally, the discharge circuit 13 may include a switching circuit and an anti-backflow circuit.

[0061] The energy source 12 serves as a second mobile power source. The energy source 12 can be rechargeable, such as a nickel-cadmium battery, nickel-metal hydride battery, lithium-ion battery, lead-acid battery, or supercapacitor. Alternatively, the energy source 12 can be non-rechargeable, allowing it to be replaced each time it is used. For example, the energy source 12 can include alkaline batteries, zinc-carbon batteries, silver oxide batteries, and silver-zinc batteries.

[0062] When the active decompression device only includes a discharge circuit, the energy source 12 can be set as a non-rechargeable mobile power supply; when the active decompression device includes a switching circuit, a charging circuit and an anti-backflow circuit, the energy source 12 can include rechargeable mobile power supplies such as nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, lead-acid batteries, and energy storage capacitors.

[0063] In this embodiment, the active decompression device includes a detection and control circuit, an energy source, and a discharge circuit. The detection and control circuit is connected to an external power supply and the discharge circuit. The discharge circuit is also connected to the energy source. The detection and control circuit is used to acquire the pressure force signal of the object being compressed. When the pressure force signal meets the preset pressure signal requirements, it controls the discharge circuit to conduct based on the pressure force signal, and detects whether the external power supply is cut off. The energy source is used to supply power to the detection and control circuit when the external power supply is cut off. The detection and control circuit is also used to control the lifting and lowering of the pressure plate in the compression device according to the pressure force signal. In this embodiment, an additional energy source is designed in the compression device. During the compression process using the compression device, if an external power failure is detected and there is pressure, the power supply of the compression device can be switched to the energy source, which supplies power to the detection and control circuit. At this time, the detection and control circuit can control the lifting and lowering of the pressure plate in the compression device according to the pressure force signal. When the pressure disappears, the energy source stops supplying power. Therefore, the active decompression device of this application can automatically determine whether automatic decompression is needed according to the scenario, without requiring manual intervention with a corresponding mechanical decompression device, reducing the requirements for technicians' ability to handle unexpected problems.

[0064] Figure 3 This is a schematic diagram of an active decompression device in another embodiment, such as... Figure 3 As shown, the detection control circuit 11 includes a controller 111 and a signal detection circuit 112; the controller 111 is connected to the signal detection circuit 112 and the discharge circuit 13 respectively, and the discharge circuit 13 is also connected to the energy source 12 and the signal detection circuit 112.

[0065] In the first scenario: the signal detection circuit 112 is used to acquire the pressure signal. When the pressure signal meets the preset pressure signal requirements, it controls the discharge circuit 13 to be turned on based on the pressure signal, and acquires the electrical signal of the external power supply 22, and sends the pressure signal and the electrical signal to the controller 111. The controller 111 is used to determine whether the external power supply 22 is de-energized based on the electrical signal. When the external power supply 22 is de-energized, it controls the pressure plate 23 to rise and fall based on the pressure signal.

[0066] In the second scenario: the signal detection circuit 112 is used to acquire the pressure signal and send it to the controller 111; the controller 111 is used to control the discharge circuit 13 to conduct according to the pressure signal when the pressure signal meets the preset force signal requirements; the controller 111 is also used to acquire the electrical signal of the external power supply 22 sent by the signal detection circuit 112, determine whether the external power supply 22 is de-energized according to the electrical signal, and control the pressure plate 23 to rise and fall according to the pressure signal when the external power supply 22 is de-energized.

[0067] In this embodiment, the controller 111 is connected to the signal detection circuit 112 and the discharge circuit 13 respectively. The discharge circuit 13 is also connected to the energy source 12 and the signal detection circuit 112. The signal detection circuit 112 is also connected to the object being compressed 21 and the external power supply 22. The controller 111 is connected to the compression plate 23.

[0068] Specifically, the signal detection circuit 112 may include a pressure detection circuit and a power supply signal detection circuit. The pressure detection circuit is used to acquire the pressure force signal. On one hand, the pressure detection circuit can be used to determine whether pressure force exists. If pressure force exists, the power supply signal detection circuit acquires an electrical signal and sends it to the controller 111. The controller 111 then determines whether the external power supply 22 is de-energized. On the other hand, after acquiring the pressure force signal, the pressure detection circuit sends the signal to the controller 111. The controller 111 then determines whether pressure force exists. If pressure force exists, the power supply signal detection circuit acquires an electrical signal and sends it to the controller 111. The controller 111 then determines whether the external power supply 22 is de-energized. If the external power supply 22 is de-energized and pressure force exists, the controller 111 controls the pressure plate 23 to rise and fall. Compared to using the controller 111 to determine whether pressure force exists and, if pressure force exists, to control the discharge circuit 13 to conduct, using the pressure detection circuit for pressure force determination and control of the discharge circuit 13 is more efficient and reliable.

[0069] Optionally, the controller 111 can be an analog circuit or a digital circuit. The controller 111 can also be a control element, which can be, but is not limited to, a microcontroller unit (MCU), a central processing unit (CPU), a digital signal processor (DSP), a field programmable gate array (FPGA), a single-chip microcomputer, etc.

[0070] In this embodiment, the signal detection circuit is used to acquire a pressure signal, and when the pressure signal meets the preset pressure signal requirements, to control the discharge circuit to conduct based on the pressure signal. It also acquires an electrical signal from an external power source and sends both the pressure signal and the electrical signal to the controller. The controller determines whether the external power source is disconnected based on the electrical signal, and when the external power source is disconnected, controls the pressure plate to rise and fall based on the pressure signal. Alternatively, the signal detection circuit acquires the pressure signal and sends it to the controller. The controller controls the discharge circuit to conduct based on the pressure signal when the pressure signal meets the preset pressure signal requirements. The controller also acquires the electrical signal from the external power source sent by the signal detection circuit, determines whether the external power source is disconnected based on the electrical signal, and controls the pressure plate to rise and fall based on the pressure signal when the external power source is disconnected. This embodiment provides two different detection and control methods, making the setting of the active decompression device more flexible.

[0071] Figure 4 This is a schematic diagram of an active decompression device in another embodiment, such as... Figure 4 As shown, the discharge circuit includes a switching circuit 131 and an anti-backflow circuit 132. The first terminal of the switching circuit 131 is connected to the energy source 12, the second terminal of the switching circuit 131 is connected to the first terminal of the anti-backflow circuit 132, and the third terminal of the switching circuit 131 is connected to the first terminal of the signal detection circuit. The second terminal of the anti-backflow circuit 132 is connected to the controller 111, the second terminal of the signal detection circuit, and the third terminal of the signal detection circuit. The third terminal of the anti-backflow circuit 132 is connected to the fourth terminal of the signal detection circuit and the external power supply 22.

[0072] The first scenario: The signal detection circuit is used to control the switch circuit 131 to turn on when the pressure signal meets the preset force signal requirements, so that the energy source 12 can supply power to the controller 111 and the signal detection circuit through the switch circuit 131 and the anti-backflow circuit 132 when the external power supply 22 is cut off.

[0073] The second scenario: Controller 111 is used to control switch circuit 131 to conduct when the pressure signal meets the preset force signal requirements, so that energy source 12 supplies power to controller 111 and signal detection circuit through switch circuit 131 and anti-backflow circuit 132. In this case, the fourth terminal of switch circuit 131 also needs to be connected to controller 111.

[0074] Under pressure, the signal detection circuit controls the switch circuit 131 to conduct. If the controller 111 detects a power outage in the external power supply 22, the energy source 12 supplies power to the controller 111 and the signal detection circuit through the discharge circuit. To prevent the energy source 12 from supplying power to the external power supply 22 while supplying power to the controller 111 and the signal detection circuit, this embodiment includes an anti-backflow circuit 132 in the discharge circuit. In the event of a power outage in the external power supply 22, the energy source 12 can supply power to the controller 111 and the signal detection circuit through the switch circuit 131 and the anti-backflow circuit 132.

[0075] Optionally, the switching circuit 131 can be implemented using a switching transistor (MOSFET, triode), or using a relay, contactor, or other switching device.

[0076] Optionally, the reverse current prevention circuit 132 may include a diode reverse current prevention circuit, a MOSFET reverse current prevention circuit, and an Oring circuit. The diode reverse current prevention circuit can use the unidirectional conductivity of the diode to prevent current reverse current; the MOSFET reverse current prevention circuit can effectively prevent current reverse current by controlling the switching state of the MOSFET; and current reverse current is prevented by precisely controlling the connection and disconnection between the external power supply 22 and the energy source 12.

[0077] Continue as described above Figure 4 As shown, the device also includes a charging circuit 14, the first end of which is connected to an external power source 22, and the second end of the charging circuit 133 is connected to an energy source 12. The charging circuit 133 is used to charge the energy source 12 from the external power source 22 when the external power source 22 is not disconnected.

[0078] Similarly, under pressure, the signal detection circuit or controller 111 controls the switch circuit 131 to conduct. When the external power supply 22 is supplying power normally, to prevent the external power supply 22 from charging the energy source 12 without going through the charging circuit 133 and instead charging the energy source 12 through the switch circuit 131, the first terminal of the charging circuit 14 is connected to the external power supply 22. That is, the first terminal of the charging circuit 14 is connected to the third terminal of the anti-backflow circuit 132, ensuring that the external power supply 22 charges the energy source 12 directly through the charging circuit 14.

[0079] Optionally, the charging circuit 14 may include a constant current charging circuit, a constant voltage charging circuit, and a pulse charging circuit, etc.

[0080] Furthermore, the backflow prevention circuit 132 includes a first semiconductor device D1 and a second semiconductor device D2; the first terminal of the first semiconductor device D1 is connected to the external power supply 22, and the second terminal of the first semiconductor device D1 is connected to the controller 111, the second terminal of the signal detection circuit, and the third terminal of the signal detection circuit; the first terminal of the second semiconductor device D2 is connected to the second terminal of the switching circuit 131, and the second terminal of the second semiconductor device D2 is connected to the second terminal of the first semiconductor device D1; wherein, the forward voltage drop of the first semiconductor device D1 is less than the forward voltage drop of the second semiconductor device D2, or the voltage of the energy source 12 is less than the voltage of the external power supply 22.

[0081] In the embodiments of this application, such as Figure 4 As shown, the first end of the first semiconductor device D1 is connected to the external power supply 22, the second end of the first semiconductor device D1 is connected to the controller 111, the second end of the signal detection circuit (that is, the second end of the pressure detection circuit in the following text), the third end of the signal detection circuit (that is, the third end of the power supply signal detection circuit in the following text), and the second end of the second semiconductor device D2, and the first end of the second semiconductor device D2 is connected to the second end of the switch circuit 131.

[0082] It should be noted that, due to Figure 4 The signal detection circuit is not shown in the diagram. For ease of understanding and reading, the signal detection circuit is described as including the pressure detection circuit 1121 and the power supply signal detection circuit 1122 in the following embodiments. The terminals of the signal detection circuit are described as follows: the first terminal of the signal detection circuit is the first terminal of the pressure detection circuit 1121, the second terminal of the signal detection circuit is the second terminal of the pressure detection circuit 1121, the third terminal of the signal detection circuit is the third terminal of the power supply signal detection circuit 1122, and the fourth terminal of the signal detection circuit is the first terminal of the power supply signal detection circuit 1122.

[0083] If the forward voltage drop of the first semiconductor device D1 is less than the forward voltage drop of the second semiconductor device D2, or if the voltage of the energy source 12 is less than the voltage of the external power supply 22, then when the external power supply 22 is supplying power normally, the second semiconductor device D2 is turned off and the energy source 12 will not discharge; when the external power supply 22 is turned off, the second semiconductor device D2 is turned on, the first semiconductor device D1 is turned off, and the energy source 12 discharges.

[0084] In this embodiment, the signal detection circuit or controller is used to control the switching circuit to conduct when the pressure signal meets the preset force signal requirements, so that the energy source supplies power to the controller and signal detection circuit through the switching circuit and the anti-backflow circuit when the external power supply is interrupted; and the charging circuit is used to charge the energy source through the charging circuit when the external power supply is not interrupted. In this embodiment, based on the charging circuit and the switching circuit, the anti-backflow circuit ensures the reliability of the energy source's charging and discharging, making the active decompression device based on the discharge circuit proposed in this application practically usable at a low implementation cost.

[0085] In one embodiment provided in this application, in conjunction with the above... Figure 3 and Figure 4 As shown, the signal detection circuit 112 includes a pressure detection circuit 1121 and a power supply signal detection circuit 1122. The first terminal of the pressure detection circuit 1121 is connected to the third terminal of the switch circuit 131, the second terminal of the pressure detection circuit 1121 is connected to the second terminal of the anti-backflow circuit 132, and the third terminal of the pressure detection circuit 1121 is connected to the controller 111. The first terminal of the power supply signal detection circuit 1122 is connected to the external power supply 22, the second terminal of the power supply signal detection circuit 1122 is connected to the controller 111, and the third terminal of the power supply signal detection circuit 1122 is connected to the second terminal of the anti-backflow circuit 132. The pressure detection circuit 1121 is used to acquire the pressure signal collected by the external sensor 24. When the pressure signal meets the preset pressure signal requirements, it controls the discharge circuit 13 to be turned on according to the pressure signal. The power supply signal detection circuit 1122 is used to acquire the electrical signal of the external power supply 22.

[0086] In this embodiment of the application, the pressure detection circuit 1121 may include a signal conditioning circuit (filtering circuit, amplification circuit, etc.). The signal conditioning circuit acquires the pressure signal sent by the external sensor 24, processes the pressure signal and sends it to the controller 111. The controller 111 determines whether the processed pressure signal meets the preset force signal requirements. If the processed pressure signal meets the preset force signal requirements, it sends a self-locking signal to the discharge circuit 13.

[0087] In one possible implementation, the pressure detection circuit 1121 may also include a signal conditioning circuit (or a filtering circuit, an amplification circuit, etc.) and a comparison circuit. The signal conditioning circuit acquires the pressure signal sent by the external sensor 24 and processes the pressure signal. The comparison circuit determines whether the processed pressure signal meets the preset force signal requirement. That is, the comparison circuit compares the magnitudes of two voltage signals (the voltage signal corresponding to the processed pressure signal and the voltage corresponding to the preset force signal) and outputs the comparison result as a high-level or low-level signal. If the processed pressure signal meets the preset force signal requirement, a self-locking signal is sent to the discharge circuit 13.

[0088] The power supply signal detection circuit 1122 is used to acquire the electrical signal from the external power supply 22 and send the acquired electrical signal to the controller 111. The controller 111 determines whether the external power supply 22 is powered off based on the electrical signal. Optionally, the power supply signal detection circuit 1122 can be a voltage acquisition circuit or a current acquisition circuit. The voltage acquisition circuit can be a voltage sensor, or it can be a circuit structure composed of multiple electronic components; alternatively, the current acquisition circuit can be a current sensor.

[0089] Optionally, the external sensor 24 can be a pressure sensor.

[0090] In this embodiment, the pressure detection circuit acquires the pressure signal collected by an external sensor. When the pressure signal meets the preset force signal requirements, it controls the discharge circuit to conduct based on the pressure signal. The power supply signal detection circuit acquires the electrical signal from the external power supply. The pressure signal and electrical signal acquired by the pressure detection circuit and power supply signal detection circuit in this application serve as trigger conditions for active decompression, improving the intelligence of active decompression.

[0091] In one embodiment of this application, a compression device is provided, which includes a compression plate and the active decompression device provided above.

[0092] In one embodiment of this application, a mammography device is provided, which includes the compression device provided in the above embodiment.

[0093] In mammography equipment, the object being compressed is the human breast. Since the actual size of the breast is limited, automatic decompression does not require excessively high elevation, and the actual work done by the motor is low. This means that the requirements for the energy source's storage capacity and density (volume) are not high. Simple modifications can be made to existing mammography equipment, offering significant advantages in cost, practicality, and safety. Furthermore, it does not rely on any mechanical decompression mechanism and will not affect the accuracy of pressure control.

[0094] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0095] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An active decompression device, characterized in that, The device includes a detection and control circuit (11), an energy source (12), and a discharge circuit (13); the detection and control circuit (11) is connected to an external power source (22) and the discharge circuit (13); the discharge circuit (13) is also connected to the energy source (12); The detection control circuit (11) is used to acquire the pressure force signal of the object being compressed (21), and when the pressure force signal meets the preset force signal requirements, it controls the discharge circuit (13) to be turned on based on the pressure force signal, and detects whether the external power supply (22) is de-energized. The energy source (12) is used to supply power to the detection and control circuit (11) when the external power supply (22) is de-energized; The detection control circuit (11) is also used to control the lifting and lowering of the pressure plate (23) in the pressure device according to the pressure signal.

2. The apparatus according to claim 1, characterized in that, The detection control circuit (11) includes a controller (111) and a signal detection circuit (112); the controller (111) is connected to the signal detection circuit (112) and the discharge circuit (13) respectively, and the discharge circuit (13) is also connected to the energy source (12) and the signal detection circuit (112); The signal detection circuit (112) is used to acquire the pressure signal, and when the pressure signal meets the preset force signal requirements, control the discharge circuit (13) to turn on based on the pressure signal, and acquire the electrical signal of the external power supply (22), and send the pressure signal and the electrical signal to the controller (111). The controller (111) is used to determine whether the external power supply (22) is cut off according to the electrical signal, and when the external power supply (22) is cut off, it controls the pressure plate (23) to rise and fall according to the pressure signal.

3. The apparatus according to claim 1, characterized in that, The detection control circuit (11) includes a controller (111) and a signal detection circuit (112); the controller (111) is connected to the signal detection circuit (112) and the discharge circuit (13) respectively, and the discharge circuit (13) is also connected to the energy source (12) and the signal detection circuit (112); The signal detection circuit (112) is used to acquire the pressure signal and send the pressure signal to the controller (111). The controller (111) is used to control the discharge circuit (13) to be turned on according to the pressure signal when the pressure signal meets the preset force signal requirements; The controller (111) is also used to acquire the electrical signal of the external power supply (22) sent by the signal detection circuit (112), determine whether the external power supply (22) is de-energized according to the electrical signal, and control the lifting and lowering of the pressure plate (23) according to the pressure signal when the external power supply (22) is de-energized.

4. The apparatus according to claim 2, characterized in that, The discharge circuit (13) includes a switching circuit (131) and an anti-backflow circuit (132). The first end of the switching circuit (131) is connected to the energy source (12), the second end of the switching circuit (131) is connected to the first end of the anti-backflow circuit (132), and the third end of the switching circuit (131) is connected to the first end of the signal detection circuit (112). The second end of the anti-backflow circuit (132) is connected to the controller (111), the second end of the signal detection circuit (112), and the third end of the signal detection circuit (112). The third end of the anti-backflow circuit (132) is connected to the fourth end of the signal detection circuit (112) and the external power supply (22). The signal detection circuit (112) is used to control the switch circuit (131) to turn on when the pressure signal meets the preset force signal requirements, so that the energy source (12) supplies power to the controller (111) and the signal detection circuit (112) through the switch circuit (131) and the anti-backflow circuit (132) when the external power supply (22) is cut off.

5. The apparatus according to claim 3, characterized in that, The discharge circuit (13) includes a switching circuit (131) and an anti-backflow circuit (132). The first end of the switching circuit (131) is connected to the energy source (12), the second end of the switching circuit (131) is connected to the first end of the anti-backflow circuit (132), the third end of the switching circuit (131) is connected to the first end of the signal detection circuit (112), and the fourth end of the switching circuit (131) is connected to the controller (111). The second end of the anti-backflow circuit (132) is connected to the controller (111), the second end of the signal detection circuit (112), and the third end of the signal detection circuit (112). The third end of the anti-backflow circuit (132) is connected to the fourth end of the signal detection circuit (112) and the external power supply (22). The controller (111) is used to control the control switch circuit (131) to turn on when the pressure signal meets the preset force signal requirements, so that the energy source (12) supplies power to the controller (111) and the signal detection circuit (112) through the switch circuit (131) and the anti-backflow circuit (132).

6. The apparatus according to claim 1, characterized in that, The device further includes a charging circuit (14), the first end of which is connected to the external power source (22), and the second end of which is connected to the energy source (12); The charging circuit (14) is used to charge the energy source (12) by the external power source (22) when the external power source (22) is not disconnected.

7. The apparatus according to claim 4 or 5, characterized in that, The backflow prevention circuit (132) includes a first semiconductor device (D1) and a second semiconductor device (D2); the first end of the first semiconductor device (D1) is connected to the external power supply (22), and the second end of the first semiconductor device (D1) is connected to the controller (111), the second end of the signal detection circuit (112), and the third end of the signal detection circuit (112); the first end of the second semiconductor device (D2) is connected to the second end of the switching circuit (131), and the second end of the second semiconductor device (D2) is connected to the second end of the first semiconductor device (D1); Wherein, the on-state voltage drop of the first semiconductor device (D1) is less than the on-state voltage drop of the second semiconductor device (D2), or the voltage of the energy source (12) is less than the voltage of the external power supply (22).

8. The apparatus according to claim 4, characterized in that, The signal detection circuit (112) includes a pressure detection circuit (1121) and a power supply signal detection circuit (1122); the first end of the pressure detection circuit (1121) is connected to the third end of the switch circuit (131), the second end of the pressure detection circuit (1121) is connected to the second end of the anti-backflow circuit (132), and the third end of the pressure detection circuit (1121) is connected to the controller (111); the first end of the power supply signal detection circuit (1122) is connected to the external power supply (22), the second end of the power supply signal detection circuit (1122) is connected to the controller (111), and the third end of the power supply signal detection circuit (1122) is connected to the second end of the anti-backflow circuit (132); The pressure detection circuit (1121) is used to acquire the pressure signal collected by the external sensor (24), send the pressure signal to the controller (111), and control the discharge circuit (13) to be turned on according to the pressure signal when the pressure signal meets the preset force signal requirements. The power supply signal detection circuit (1122) is used to acquire the electrical signal of the external power supply (22).

9. A compression device, characterized in that, The compression device includes a compression plate and an active decompression device as described in any one of claims 1-8.

10. A mammography device, characterized in that, The device includes the compression device as described in claim 9.

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