Emergency stop circuit and magnetic stimulation therapeutic apparatus
By introducing an emergency stop circuit into the magnetic stimulation therapy device, and using a contactor and an emergency stop switch in combination, the safety hazards of the magnetic stimulation therapy device when operating at high voltage and high current are solved, enabling rapid power cut-off in case of safety hazards and improving the safety of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-31
AI Technical Summary
Magnetic stimulation therapy devices pose insulation safety hazards when operating on the principle of high voltage and high current, resulting in high safety risks during use.
Design an emergency stop circuit, including a contactor and an emergency stop switch, connected between the power module of the magnetic stimulation therapy device and the mains power. Through the cooperation of the emergency stop switch and the contactor, the power supply is disconnected when a safety hazard is detected, thus preventing the output of high voltage.
It effectively avoids the safety hazards of high voltage to users, improves the safety performance of the magnetic stimulation therapy device, and ensures that the power input can be quickly cut off in case of safety hazards, thus protecting the user's safety.
Smart Images
Figure CN224056465U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic stimulation technology, specifically to an emergency stop circuit and a magnetic stimulation therapy device. Background Technology
[0002] Transcranial magnetic stimulation (TMS) is a painless, non-invasive, and environmentally friendly treatment method. Based on Faraday's law of electromagnetic induction, it works by rapidly discharging a storage capacitor to a stimulation coil via a thyristor during charging. The time-varying current in the coil generates a high-intensity, time-varying pulsed magnetic field, which can penetrate the skull to stimulate brain nerves. However, because TMS devices operate on the principle of high voltage and high current, inadequate insulation during use can lead to significant safety hazards. Utility Model Content
[0003] This invention provides an emergency stop circuit and a magnetic stimulation therapy device, aiming to solve the insulation safety hazards of current magnetic stimulation therapy devices that operate on the principle of high voltage and high current.
[0004] According to one aspect of the present invention, an emergency stop circuit is provided for use in a magnetic stimulation therapy device. The emergency stop circuit is connected between the power supply module of the magnetic stimulation therapy device and the mains power. The emergency stop circuit includes a contactor and an emergency stop switch. The input side and output side of the contactor are respectively connected to the output side of the mains power and the input side of the power supply module. One end of the coil in the contactor is connected to the neutral wire of the mains power, and the emergency stop switch is connected between the other end of the coil and the live wire of the mains power.
[0005] The further technical solution is that the emergency stop switch is a normally closed switch.
[0006] The further technical solution is that the contactor is an AC contactor or a relay.
[0007] According to another aspect of this utility model, a magnetic stimulation therapy device is provided, comprising a control module, a power supply module, a magnetic stimulation module, and the aforementioned emergency stop circuit, wherein the power supply module includes a high-voltage power supply module, the emergency stop circuit is connected between the high-voltage power supply module and the mains power, the high-voltage power supply module is connected to the magnetic stimulation module, and the control module is connected to the high-voltage power supply module and the magnetic stimulation module, for controlling the operation of the high-voltage power supply module and the magnetic stimulation module according to external commands.
[0008] The further technical solution is as follows: the magnetic stimulation module includes an energy storage capacitor, a discharge switch and a magnetic stimulation coil. The control terminal of the discharge switch is connected to the control module. The energy storage capacitor is connected to the magnetic stimulation coil through the discharge switch. The high-voltage power supply module is connected to both ends of the energy storage capacitor to charge the energy storage capacitor according to the signal from the control module.
[0009] The further technical solution is that the discharge switch is a MOSFET, IGBT, or thyristor.
[0010] Compared with existing technologies, the emergency stop circuit of this invention is connected between the mains power and the power module of the magnetic stimulation therapy device. In use, the emergency stop switch and the contactor work together to realize the switching of power between the mains power and the power module of the magnetic stimulation therapy device. That is, in the event of some safety hazards, the coil in the contactor can be de-energized by controlling the emergency stop switch, thereby disconnecting the input and output sides of the contactor and completely cutting off the power input of the magnetic stimulation therapy device. This can minimize the safety hazards caused by high voltage to users and has higher safety performance. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the circuit structure of a specific embodiment of the emergency stop circuit of this utility model.
[0013] Figure 2 This is a schematic diagram of the circuit structure of a specific embodiment of the magnetic stimulation therapy device of this utility model. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0015] Reference Figure 1 , Figure 1This is a schematic diagram of the circuit structure of a specific embodiment of the emergency stop circuit 10 of this utility model. The emergency stop circuit 10 of this utility model can be applied to a magnetic stimulation therapy device, connected between the mains power 200 and the power module 20 of the magnetic stimulation therapy device. It is used to completely cut off the power input of the magnetic stimulation therapy device in case of potential safety hazards (such as high current overcurrent), avoiding safety hazards to the user caused by high voltage. In the embodiment shown in the figure, the emergency stop circuit 10 is connected between the power module 20 of the magnetic stimulation therapy device and the mains power 200. The emergency stop circuit 10 includes a contactor 11 and an emergency stop switch 12. The input and output sides of the contactor 11 are respectively connected to the output side of the mains power 200 and the input side of the power module 20. One end of the coil (pin A1) of the contactor 11 is connected to the neutral wire N of the mains power 200, and the emergency stop switch 12 is connected between the other end of the coil (pin A2) and the live wire L of the mains power 200. Based on the above design, the emergency stop switch 12 and contactor 11 work together to switch the power supply between the mains power 200 and the power module 20 of the magnetic stimulation therapy device. In case of safety hazards, the coil in the contactor 11 can be de-energized by controlling the emergency stop switch 12, thereby disconnecting the input and output sides of the contactor 11 and completely cutting off the power input of the magnetic stimulation therapy device. This can minimize the safety hazards caused by high voltage to the user, resulting in higher safety performance. Furthermore, the output power of the mains power 200 is not limited by the emergency stop switch 12 but is determined by the contactor 11. By selecting a high-power contactor 11, the power input to the magnetic stimulation therapy device can meet the requirements.
[0016] In some embodiments, the emergency stop switch 12 can be a normally closed switch, and the contactor 11 can be an AC contactor or a relay. Preferably, in this embodiment, the contactor 11 is an AC contactor, specifically, as shown in the example below. Figure 1 As shown, the power pin N1 and power pin L1 on the input side of the AC contactor 11 are connected to the neutral wire N and the live wire L of the mains power 200, respectively. The power pin N2 and power pin L2 on the output side of the AC contactor 11 are connected to the negative power terminal and the positive power terminal of the power module 20 in the magnetic stimulation therapy device, respectively.
[0017] Understandably, the AC contactor 11 has two operating states: de-energized state (released state) and energized state (operating state). When the coil in the AC contactor 11 is energized (in the energized state), the normally open contact of the AC contactor 11 is closed, that is, the power supply pins N1 and L1 on the input side of the AC contactor 11 are connected to the power supply pins N2 and L2 on the output side, respectively. When the coil in the AC contactor 11 is de-energized (in the de-energized state), the normally open contact of the AC contactor 11 is reset, that is, the power supply pins N1 on the input side and N2 on the output side of the AC contactor 11 are disconnected, and the power supply pins L1 on the input side and L2 on the output side of the AC contactor 11 are disconnected.
[0018] The emergency stop circuit 10 of this utility model is applied to the magnetic stimulation therapy device. When the device is powered on and there is no danger, the emergency stop switch 12 is normally in the closed state. Power is supplied from the live wire L of the mains 200 through the emergency stop switch 12 to pin A2 of the coil in the AC contactor 11. Since pin A1 of the coil in the AC contactor 11 is connected to the neutral wire N of the mains 200, the AC contactor 11 is energized. The power supply pins N1 and L1 on the input side of the AC contactor 11 are connected to the power supply pins N2 and L2 on the output side, respectively. The system is normally powered; however, if a safety hazard exists, the emergency stop switch 12 can be pressed and placed in the open state. The power supply from the live wire L of the mains power 200 passes through the emergency stop switch 12 and cannot form a circuit with the two ends of the coil in the AC contactor 11. Therefore, the AC contactor 11 is de-energized, and the power supply pin N1 on the input side and the power supply pin N2 on the output side of the AC contactor 11 are disconnected. In addition, the power supply pin L1 on the input side and the power supply pin L2 on the output side of the AC contactor 11 are disconnected, thus disconnecting the power supply to the magnetic stimulation therapy device and improving the safety of the magnetic stimulation therapy device.
[0019] Reference Figure 2 , Figure 2 This is a schematic diagram of the circuit structure of a specific embodiment of the magnetic stimulation therapy device of this utility model. In the embodiment shown in the figure, the magnetic stimulation therapy device includes a control module 40, a power supply module 20, a magnetic stimulation module 30, and an emergency stop circuit 10 as described in the above embodiment. The power supply module 20 includes a high-voltage power supply module 20. The emergency stop circuit 10 is connected between the high-voltage power supply module 20 and the mains power 200. The high-voltage power supply module 20 is connected to the magnetic stimulation module 30. The control module 40 is connected to both the high-voltage power supply module 20 and the magnetic stimulation module 30, and is used to control the operation of the high-voltage power supply module 21 and the magnetic stimulation module 30 according to external commands. Based on the above design, the emergency stop circuit 10 can cut off the input of the mains power 200 in case of a safety hazard, thereby disconnecting the power supply input and high-voltage power output of the magnetic stimulation therapy device, making it safer to use.
[0020] In some embodiments, the magnetic stimulation module 30 includes an energy storage capacitor, a discharge switch, and a magnetic stimulation coil. The discharge switch can be a MOSFET, IGBT, or SCR. The control terminal of the discharge switch is connected to the control module 40. The energy storage capacitor is connected to the magnetic stimulation coil via the discharge switch. Specifically, in some embodiments, one end of the energy storage capacitor is connected to one end of the magnetic stimulation coil via the discharge switch, and the other end of the energy storage capacitor is connected to the other end of the magnetic stimulation coil. The high-voltage power supply module 21 is connected to both ends of the energy storage capacitor to charge it according to a signal from the control module 40. Understandably, the magnetic stimulation module 30, composed of the energy storage capacitor, discharge switch, and magnetic stimulation coil, is a commonly used magnetic stimulation module in the art, and its specific working principle will not be elaborated here.
[0021] In summary, this invention, through the cooperation of an emergency stop switch and a contactor, can realize the switching of power between the mains power and the power module of the magnetic stimulation therapy device. That is, in the event of some safety hazards, the coil in the contactor can be de-energized by controlling the emergency stop switch, thereby disconnecting the input and output sides of the contactor, and completely cutting off the power input of the magnetic stimulation therapy device, shutting off the output of the high-voltage power supply in the magnetic stimulation therapy device. This can minimize the safety hazards caused by high-voltage electricity to users, resulting in higher safety performance. Furthermore, the power input to the magnetic stimulation therapy device is not limited by the emergency stop switch, but is determined by the contactor, which can meet the power requirements of the magnetic stimulation therapy device.
[0022] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. An emergency stop circuit applied to a magnetic stimulation therapy instrument, characterized in that, The emergency stop circuit is connected between the power module of the magnetic stimulation therapeutic instrument and the commercial power supply, and comprises a contactor and an emergency stop switch.
2. The trip circuit of claim 1, wherein The emergency stop switch is a normally closed switch.
3. The trip circuit of claim 1, wherein, The contactor is an AC contactor or a relay.
4. A magnetic stimulation therapy apparatus, characterized by comprising: The magnetic stimulation therapeutic instrument comprises a control module, a power module, a magnetic stimulation module and the emergency stop circuit of any one of claims 1-3, wherein the power module comprises a high-voltage power module, the emergency stop circuit is connected between the high-voltage power module and the commercial power supply, the high-voltage power module is connected with the magnetic stimulation module, and the control module is connected with the high-voltage power module and the magnetic stimulation module and used for controlling the high-voltage power module and the magnetic stimulation module to work according to an external instruction.
5. The magnetic stimulation therapy apparatus as claimed in claim 4, wherein the magnetic field generator is a solenoid coil. The magnetic stimulation module comprises an energy storage capacitor, a discharge switch and a magnetic stimulation coil, the control end of the discharge switch is connected with the control module, the energy storage capacitor is connected with the magnetic stimulation coil through the discharge switch, and the high-voltage power module is connected across the energy storage capacitor to charge the energy storage capacitor according to a signal from the control module.
6. The magnetic stimulation therapy apparatus as claimed in claim 5, wherein, The discharge switch is a MOS tube, an IGBT or a thyristor.