Audio and video monitoring device for running state of magnetic resonance cold head

Abstract

The utility model discloses an audio and video monitoring device for the running state of a magnetic resonance cold head, which belongs to the field of magnetic resonance, and is characterized in that a monitoring structure is positioned in a shielding room; the processor receives sound data collected by the sound pickup and compares the sound data with pre-stored sound data generated when the cold head works normally, the working state of the cold head is judged, when the cold head is in an abnormal state, the buzzer alarm gives an alarm, the camera collects video images scanned by a patient, and the feedback structure is installed in an operation room. The feedback structure comprises a video storage, the video storage is in communication connection with the camera, and the video storage stores video images, through the design, the running state of the cold head can be monitored in real time without entering an equipment room, when the running state of the cold head is abnormal, equipment users can be reminded in time to carry out first-aid repair immediately, and the working efficiency is improved. The liquid helium loss is reduced to the maximum extent; sound data is adopted for monitoring, and the accuracy is high.

Description

An audio-visual monitoring device for the operating status of a magnetic resonance cold head. Technical Field

[0001] This utility model relates to the field of magnetic resonance, and in particular to an audio and video monitoring device for the operating status of a magnetic resonance cold head. Background Technology

[0002] Superconducting magnetic resonance imaging (MRI) scanners are among the most expensive and sophisticated medical devices in large hospitals. To achieve superconductivity, these scanners utilize liquid helium to maintain an internal cryogenic environment of -269°C. This cryogenic environment is achieved through a water-cooled system that circulates water to a helium compressor, which in turn cools the cold head, which in turn cools the liquid helium. This cycle needs to operate continuously 24 hours a day. If the MRI cold head shuts down, the liquid helium will be rapidly depleted over time. Liquid helium is a very expensive natural resource; replenishing it costs approximately 100,000 yuan per cycle. The loss of liquid helium due to cold head shutdowns significantly increases the operating costs of the equipment.

[0003] The operating status of the MRI cold head is currently mainly recorded by supervisors when the equipment is turned on. Since it is impossible to monitor it 24 hours a day, and confirming the operating status of the equipment requires entering the machine room, doctors and technicians cannot know in real time whether the MRI cold head is running. Moreover, when supervisors discover that the equipment is abnormal, too much liquid helium has usually been consumed, resulting in losses of tens of thousands or even hundreds of thousands of yuan.

[0004] Currently, existing monitoring devices use current transformers and undercurrent relays to detect secondary induced current in the power lines of the helium compressor, a critical component in superconducting magnetic resonance imaging (MRI) devices. If there is no power supply, the device is considered to be shut down. However, when the helium compressor is in a protection state, current flows through it. In this case, the detected result shows a secondary induced current, even though the compressor is not actually operating normally. Therefore, existing monitoring devices can lead to misjudgments. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, one of the objectives of this utility model is to provide an audio and video monitoring device for the operating status of a magnetic resonance cold head that can monitor the operating status of the cold head in real time.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] An audio-visual monitoring device for the operating status of a magnetic resonance cooling head includes a monitoring structure and a feedback structure. The monitoring structure is located in a shielded room and includes a microphone, a processor, a buzzer alarm, and a camera. The microphone collects sound data from the cooling head, and the processor is communicatively connected to the microphone. The processor receives the sound data collected by the microphone and compares it with pre-stored sound data generated when the cooling head is operating normally to determine whether the cooling head is in a normal or abnormal state. The buzzer alarm and the camera are communicatively connected to the processor. When the cooling head is in an abnormal state, the buzzer alarm sounds, and the camera captures video images scanned from the patient. The feedback structure is installed in the operating room and includes a video recording memory. The video recording memory is communicatively connected to the camera and stores the video images.

[0008] Furthermore, the feedback structure also includes a voice broadcaster, which is communicatively connected to the processor. The voice broadcaster has pre-stored warning voices, and when the cold head is in an abnormal state, the voice broadcaster broadcasts the warning voices.

[0009] Furthermore, the cold head is located within the shielding chamber.

[0010] Furthermore, the audio-visual monitoring device for the operating status of the magnetic resonance cooling head also includes a display, which is located in the operating room and is communicatively connected to the video recording memory. The display is used to review the patient's physical condition when the cooling head is in an abnormal state and the patient undergoes a magnetic resonance examination in the shielded room.

[0011] Furthermore, the camera records audio and video information before and after the cold head malfunctions, and transmits the audio and video information before and after the cold head malfunctions to the display.

[0012] Furthermore, the audio-visual monitoring device for the operating status of the magnetic resonance cold head also includes a power supply, which is electrically connected to the monitoring structure to supply power to the monitoring structure, and the power supply is located in the equipment room.

[0013] Furthermore, the power supply provides 12V DC power to the monitoring structure.

[0014] Furthermore, the audio-visual monitoring device for the operating status of the magnetic resonance cold head also includes a power distribution system, which supplies power to the helium compressor and the power source. The helium compressor and the power distribution system are located in the equipment room. The helium compressor cools and supplies power to the cold head, and the cooling is magnetic resonance liquid helium cooling.

[0015] Furthermore, the monitoring structure and the feedback structure are connected via optical fiber for communication.

[0016] Compared to existing technologies, this utility model's audio-visual monitoring device for the operating status of a magnetic resonance cold head includes a monitoring structure and a feedback structure. The monitoring structure is located in a shielded room and includes a microphone, a processor, a buzzer alarm, and a camera. The microphone collects sound data from the cold head, and the processor is communicatively connected to the microphone. The processor receives the sound data collected by the microphone and compares it with pre-stored sound data generated when the cold head is operating normally to determine whether the cold head is in a normal or abnormal state. The buzzer alarm and the camera are communicatively connected to the processor. When the cold head is in an abnormal state, the buzzer alarm sounds, and the camera captures video images scanned from the patient. The feedback structure is installed in the operating room and includes a video recording memory. The video recording memory is communicatively connected to the camera and stores the video images. Through the above design, the operating status of the cold head can be monitored without entering the equipment room. When the operating status of the cold head is abnormal, it can promptly remind the equipment user to repair it immediately, minimizing liquid helium loss. The use of sound data for monitoring ensures high accuracy. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the audio and video monitoring device for the operating status of the magnetic resonance cold head of this utility model;

[0018] Figure 2 is a schematic diagram of the monitoring structure of the audio-visual monitoring device for the operating status of the magnetic resonance cold head in Figure 1;

[0019] Figure 3 is a schematic diagram of the operating principle of the audio and video monitoring device for the magnetic resonance cold head of this utility model.

[0020] In the diagram: 10, power distribution system; 20, helium compressor; 30, cold head; 40, power supply; 50, monitoring structure; 51, microphone; 52, processor; 53, buzzer alarm; 54, camera; 60, feedback structure; 61, video storage; 62, voice broadcaster; 70, display. Detailed Implementation

[0021] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Please refer to Figures 1 to 3. This utility model discloses an audio-visual monitoring device for the operating status of a magnetic resonance cooling head (CRT) device, used to monitor the working status of the CRT 30. The CRT 30 is used to circulate liquid helium for cooling the CRT, and the helium compressor 20 cools the CRT 30. When the CRT 30 malfunctions (including stops working), the liquid helium will be consumed more rapidly over time, causing significant economic losses. When the CRT 30 is working normally, it emits a fixed frequency "clicking" sound. This application collects the real-time sound of the CRT 30 during operation and compares it with pre-stored sounds of the CRT 30 during normal operation, thereby monitoring the working status of the CRT 30 in real time and detecting any malfunctions.

[0025] The audio-visual monitoring device for the operating status of the magnetic resonance cold head includes a power distribution system 10, a power supply 40, a monitoring structure 50, a feedback structure 60, and a display 70.

[0026] The power distribution system 10, power supply 40, and helium compressor 20 are located in the equipment room (computer room). The power distribution system 10 supplies power to the helium compressor 20 and power supply 40. Power supply 40 supplies power to the monitoring structure 50. Specifically, power supply 40 supplies 12V DC power to the monitoring structure 50.

[0027] The monitoring structure 50 is located in a shielded room used for MRI scans of patients. The monitoring structure 50 includes a microphone 51, a processor 52, a buzzer alarm 53, and a camera 54. The microphone 51, the buzzer alarm 53, and the camera 54 are all communicatively connected to the processor 52.

[0028] The microphone 51 is used to collect the sound when the cold head 30 is working and transmit the sound data to the processor 52 for analysis. Specifically, the microphone 51 includes a microphone and an audio amplifier, used to monitor the sound of the magnetic resonance cold head during operation.

[0029] The processor 52 has pre-stored the sound of the cold head 30 operating normally. The processor 52 is communicatively connected to the microphone 51. The processor 52 receives the sound data collected by the microphone 51 and compares it with the sound of the cold head 30 operating normally to analyze the operating status of the cold head 30. Specifically, the processor 52 includes an analog multiplier and a comparator. The analog multiplier is one of AD532, AD539, or AD834, used to analyze and process the sound data collected by the microphone 51. The comparator compares the sound data collected by the microphone 51 with the audio data of the cold head 30 during normal operation. This determines whether the cold head 30 is in normal operation or an abnormal state, including a shutdown state.

[0030] The buzzer alarm 53 is connected to the processor 52. When the processor 52 determines that the cold head 30 is in an abnormal state, the buzzer alarm 53 will sound an alarm to inform the personnel in the shielded room.

[0031] Camera 54 is communicatively connected to processor 52. Located inside a shielded room, camera 54 collects video data from the cooling head 30 and the patient. The patient's video data can monitor the patient's physical condition during MRI scans and whether the condition suddenly worsens. The video data from the cooling head 30 can be replayed when the cooling head 30 malfunctions, helping maintenance personnel to understand the cause of the malfunction in a timely manner.

[0032] The feedback structure 60 is located in the operating room and is communicatively connected to the monitoring structure 50. Specifically, the monitoring structure 50 and the feedback structure 60 communicate via optical fiber. The feedback structure 60 includes a video recording memory 61 and a voice broadcaster 62. The video recording memory 61 is communicatively connected to the camera 54 and is used to store the video recordings captured by the camera 54. The voice broadcaster 62 is communicatively connected to the processor 52 and has pre-stored abnormal alert voice messages. When the processor 52 determines that the cold head 30 is in an abnormal state, the voice broadcaster 62 issues a voice alert, reminding the equipment operator to report the problem promptly.

[0033] A monitor 70 is installed in the operating room and is communicatively connected to a video recording storage unit 61. The monitor 70 displays the video footage captured by the camera 54. Through the monitor 70, the operating physician can monitor the patient's physical condition in the shielded room during the MRI examination in real time, and whether the condition suddenly deteriorates. When the processor 52 determines that the cold head 30 is in an abnormal state, the maintenance personnel can use the monitor 70 to replay the video before and after the cold head 30 malfunction, find the cause of the fault, and restore the operation of the MRI cold head 30 as quickly as possible, minimizing the consumption of MRI liquid helium.

[0034] This utility model discloses an audio-visual monitoring device for the operating status of a magnetic resonance cooling head. It collects real-time sound during the operation of the cooling head 30 and compares it with pre-stored sound recordings of the cooling head 30 during normal operation. This allows for real-time monitoring of the cooling head 30's operating status, detection of malfunctions, and immediate alerting of maintenance personnel via buzzer response and voice broadcast upon shutdown. This minimizes liquid helium loss and provides audio-visual references for repair and recovery. Designed to reduce the operating costs of superconducting magnetic resonance equipment, reduce manpower, and alleviate the burden on maintenance engineers, this device is cost-effective, offering losses hundreds of times greater than the initial investment. It has a wide range of applications, generally applicable to all superconducting magnetic resonance equipment on the market. Installation is simple, requiring no connection or modification to the existing medical equipment structure and wiring. It reduces the workload of medical personnel conducting 24-hour equipment inspections, while also reducing the cost of equipment inspection personnel.

[0035] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. An audio-visual monitoring device for the operating status of a magnetic resonance cold head, comprising a monitoring structure and a feedback structure, characterized in that: The monitoring structure is located in a shielded room and includes a microphone, a processor, a buzzer alarm, and a camera. The microphone collects sound data from the cooling head. The processor is communicatively connected to the microphone and receives the sound data. The processor compares the sound data with pre-stored sound data generated when the cooling head is working normally to determine whether the cooling head is in a normal or abnormal state. The buzzer alarm and the camera are communicatively connected to the processor. When the cooling head is in an abnormal state, the buzzer alarm sounds, and the camera captures video images scanned from the patient. The feedback structure is installed in the operating room and includes a video recording memory. The video recording memory is communicatively connected to the camera and stores the video images.

2. The audio-visual monitoring device for the operating status of the magnetic resonance cold head according to claim 1, characterized in that: The feedback structure also includes a voice broadcaster, which is communicatively connected to the processor. The voice broadcaster has pre-stored warning voices, and when the cold head is in an abnormal state, the voice broadcaster broadcasts the warning voice.

3. The audio-video monitoring device for operating state of a magnetic resonance cold head according to claim 1, characterized in that: The cold head is located inside the shielding chamber.

4. The audio-visual monitoring device for the operating status of the magnetic resonance cold head according to claim 1, characterized in that: The audio-visual monitoring device for the operating status of the magnetic resonance cooling head also includes a display, which is located in the operating room and is communicatively connected to the video recording memory. The display is used to review the patient's physical condition when the cooling head is in an abnormal state and the patient undergoes a magnetic resonance examination in the shielded room.

5. The audio-visual monitoring device for the operating status of the magnetic resonance cold head according to claim 4, characterized in that: The camera records audio and video information before and after the cold block malfunctions, and transmits the audio and video information before and after the cold block malfunctions to the display.

6. The audio-visual monitoring device for the operating status of the magnetic resonance cold head according to claim 1, characterized in that: The audio-visual monitoring device for the operating status of the magnetic resonance cold head also includes a power supply, which is electrically connected to the monitoring structure to supply power to the monitoring structure. The power supply is located in the equipment room.

7. The audio-visual monitoring device for the operating status of the magnetic resonance cold head according to claim 6, characterized in that: The power source supplies 12V DC power to the monitoring structure.

8. The audio-video monitoring device of operating state of a magnetic resonance cold head according to claim 6, characterized in that: The audio-visual monitoring device for the operating status of the magnetic resonance cold head also includes a power distribution system, which supplies power to the helium compressor and the power source. The helium compressor and the power distribution system are located in the equipment room. The helium compressor cools and supplies power to the cold head, and the cooling is magnetic resonance liquid helium cooling.

9. The audio-visual monitoring device for the operating status of the magnetic resonance cold head according to claim 1, characterized in that: The monitoring structure and the feedback structure are connected by optical fiber for communication.

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