CN-115641307-B - Short-distance alarm system and method based on mobile magnetic resonance system

CN115641307BCN 115641307 BCN115641307 BCN 115641307BCN-115641307-B

Abstract

The invention provides a short-distance alarm system and method based on a mobile magnetic resonance system, wherein the system comprises a first acquisition module, a determination module, a second acquisition module and a judgment module, wherein the first acquisition module is used for acquiring the equipment position and the influence distance of mobile magnetic resonance equipment in the running process, the determination module is used for determining a first area influenced by the mobile magnetic resonance equipment according to the equipment position and the influence distance based on a preset drawing rule, the second acquisition module is used for acquiring a first image in the first area, the judgment module is used for determining a reminding target according to the first image, and the first reminding module is used for carrying out corresponding reminding on the reminding target. According to the short-distance alarm system and method based on the mobile magnetic resonance system, the first area to be monitored is determined according to the equipment position and the influence distance of the mobile magnetic resonance equipment, the method is more reasonable, the reminding target is directly determined to carry out corresponding reminding based on the first image in the first area, the method is more intelligent, and the timeliness of reminding is improved.

Inventors

JI JING
SUN WENFENG

Assignees

中科微影(泰州)医疗科技有限公司

Dates

Publication Date: 20260508
Application Date: 20221013

Claims (6)

1. A mobile magnetic resonance system-based proximity alarm system, comprising: the first acquisition module is used for acquiring the equipment position and the influence distance of the mobile magnetic resonance equipment; the determining module is used for determining a first area influenced by the mobile magnetic resonance equipment according to the equipment position and the influence distance based on a preset drawing rule; the second acquisition module is used for acquiring a first image in the first area; the judging module is used for judging whether a person exists in the first area according to the first image, and if so, determining a reminding target; The first reminding module is used for carrying out corresponding reminding on the reminding target; the system comprises a first reminding module, a second reminding module, a first reminding module, a second reminding module and a third reminding module, wherein the first reminding module is used for finishing reminding, calculating a departure willingness index corresponding to a reminding target, and obtaining a first position corresponding to the reminding target if the departure willingness index is smaller than or equal to a preset first threshold; The calculating the leaving willingness index corresponding to the reminding target comprises the following steps: Calculating a first leaving willingness value corresponding to the reminding target in a preset time period, and simultaneously, calculating a corresponding second leaving willingness value; accumulating and calculating the first leaving willingness value and the second leaving willingness value to obtain a leaving willingness index corresponding to the reminding target; the calculating a first leaving willingness value corresponding to the reminding target in a preset time period includes: Acquiring a fourth position and a sight line direction in a time period after the corresponding reminding target receives the reminding; Constructing a first vector according to the line-of-sight direction based on the fourth position; acquiring a second boundary line of the first area, and determining a fifth position closest to the fourth position from the second boundary line; Determining a position direction of the fifth position relative to the fourth position based on the fifth position and the fourth position; constructing a second vector according to the position direction based on the fourth position; calculating cosine values of vector included angles of the first vector and the second vector; Accumulating and calculating a cosine value to obtain a first leaving willingness value; Wherein the calculating the corresponding second leaving willingness value includes: Dividing the time period into a plurality of time intervals based on a preset dividing rule; Acquiring the starting time of the time interval and the ending time of the time interval; Acquiring a seventh position at the starting moment and an eighth position at the ending moment; calculating a distance between the eighth location and the seventh location; Acquiring the time length of the distance corresponding to the time interval; calculating the ratio of the distance to the corresponding time length; giving a weight coefficient of the time interval corresponding to the ratio to obtain a weighted ratio; and accumulating and calculating the weighted ratio to obtain the second leaving willingness value.
2. A mobile magnetic resonance system based proximity alarm system as claimed in claim 1, wherein the second acquisition module performs the following operations: Acquiring a preset image acquisition device distribution diagram in the first area, and determining at least one first image acquisition device from the image acquisition device distribution diagram; acquiring the first image acquired by the first image acquisition device; and/or the number of the groups of groups, And acquiring the first image acquired by a second image acquisition device preset on the mobile magnetic resonance equipment.
3. A mobile magnetic resonance system based proximity alarm system as set forth in claim 2, wherein said acquiring said first image acquired by said first image acquisition means comprises: acquiring an area map of a first area, determining a first position of a first image acquisition device and a first boundary line of the first area from the area map, and judging whether the first position is on the first boundary line or not; If yes, the corresponding first image acquisition device is used as a third image acquisition device; acquiring a shooting mode of a third image acquisition device; when the shooting mode is fixed angle shooting, taking the corresponding third image acquisition device as a fourth image acquisition device, and determining a fifth image acquisition device which cannot pick up the first area in the fourth image acquisition device; and eliminating a fifth image acquisition device in the first image acquisition devices, and acquiring the third images shot by the rest first image acquisition devices and taking the third images as the first images.
4. The mobile magnetic resonance system-based proximity alarm system of claim 1, wherein the determination module performs the following operations: performing feature extraction on the first image based on a preset feature extraction template to obtain a plurality of first image features; Matching the first image features with human body features in a preset human body feature library to obtain matching values; Accumulating and calculating a matching value to obtain a sum of the matching values; If the matching value sum is greater than or equal to a preset first threshold value, determining that at least one person to be identified exists in the first area; Judging whether the personnel to be identified are staff, and if not, taking the corresponding personnel to be identified as a reminding target.
5. The mobile magnetic resonance system-based proximity alarm system of claim 1, wherein the first alert module performs the following operations: Determining a second position of the reminding target in the first area based on the first image; acquiring a preset reminding trolley distribution diagram, determining the reminding trolley nearest to the second position from the reminding trolley distribution diagram, and controlling the reminding trolley to go to the second position; When the reminding trolley reaches the second position, correspondingly reminding the reminding target based on a preset reminding rule; acquiring a third position corresponding to the reminding target after reminding in real time; And finishing reminding when the third position is not in the first area.
6. A short-distance alarm method based on a mobile magnetic resonance system is characterized by comprising the following steps: Step 1, acquiring the equipment position and the influence distance of the mobile magnetic resonance equipment in the running process; Step 2, determining a first area influenced by the mobile magnetic resonance equipment based on a preset drawing rule according to the equipment position and the influence distance; step 3, acquiring a first image in the first area; Step 4, judging whether a person exists in the first area according to the first image, if so, determining a reminding target; step 5, carrying out corresponding reminding on the reminding target; Step 6, after the reminding is completed, calculating a leaving willingness index corresponding to the reminding target, and if the leaving willingness index is smaller than or equal to a preset second threshold value, acquiring a fourth position corresponding to the reminding target; The calculating the leaving willingness index corresponding to the reminding target comprises the following steps: Calculating a first leaving willingness value corresponding to the reminding target in a preset time period, and simultaneously, calculating a corresponding second leaving willingness value; accumulating and calculating the first leaving willingness value and the second leaving willingness value to obtain a leaving willingness index corresponding to the reminding target; the calculating a first leaving willingness value corresponding to the reminding target in a preset time period includes: Acquiring a fourth position and a sight line direction in a time period after the corresponding reminding target receives the reminding; Constructing a first vector according to the line-of-sight direction based on the fourth position; acquiring a second boundary line of the first area, and determining a fifth position closest to the fourth position from the second boundary line; Determining a position direction of the fifth position relative to the fourth position based on the fifth position and the fourth position; constructing a second vector according to the position direction based on the fourth position; calculating cosine values of vector included angles of the first vector and the second vector; Accumulating and calculating a cosine value to obtain a first leaving willingness value; Wherein the calculating the corresponding second leaving willingness value includes: Dividing the time period into a plurality of time intervals based on a preset dividing rule; Acquiring the starting time of the time interval and the ending time of the time interval; Acquiring a seventh position at the starting moment and an eighth position at the ending moment; calculating a distance between the eighth location and the seventh location; Acquiring the time length of the distance corresponding to the time interval; calculating the ratio of the distance to the corresponding time length; giving a weight coefficient of the time interval corresponding to the ratio to obtain a weighted ratio; and accumulating and calculating the weighted ratio to obtain the second leaving willingness value.

Description

Short-distance alarm system and method based on mobile magnetic resonance system Technical Field The invention relates to the technical field of magnetic resonance, in particular to a short-distance alarm system and method based on a mobile magnetic resonance system. Background At present, the mobile magnetic resonance device is widely applied to the scenes of emergency medical and health events (for example, in outdoor scenes, an injured patient needs to scan images of the magnetic resonance device), but in the use process, the magnetic leakage field of the magnetic resonance device can influence surrounding personnel and precise instruments, so that the nearby personnel and equipment need to be reminded. The existing mobile magnetic resonance equipment has no magnetic leakage field alarming and reminding function when moving, and is also only provided with a simple mechanical alarming device when in use, so that the area needing to be reminded cannot be reasonably determined, the area is not intelligent enough, and meanwhile, when staff negligence occurs, the timeliness of reminding is low. Therefore, a solution is needed. Disclosure of Invention The invention provides a short-distance alarm system and a short-distance alarm method based on a mobile magnetic resonance system, which introduce drawing rules, determine a first area to be monitored according to the equipment position and the influence distance of mobile magnetic resonance equipment, are more reasonable, directly determine a reminding target to carry out corresponding reminding based on a first image in the first area, are more intelligent, and improve the timeliness of reminding. The invention provides a short-distance alarm system based on a mobile magnetic resonance system, which comprises: the first acquisition module is used for acquiring the equipment position and the influence distance of the mobile magnetic resonance equipment; the determining module is used for determining a first area influenced by the mobile magnetic resonance equipment according to the equipment position and the influence distance based on a preset drawing rule; the second acquisition module is used for acquiring a first image in the first area; the judging module is used for judging whether a person exists in the first area according to the first image, and if so, determining a reminding target; the first reminding module is used for carrying out corresponding reminding on the reminding target. Preferably, the second acquisition module performs the following operations: Acquiring a preset image acquisition device distribution diagram in the first area, and determining at least one first image acquisition device from the image acquisition device distribution diagram; acquiring the first image acquired by the first image acquisition device; and/or the number of the groups of groups, And acquiring the first image acquired by a second image acquisition device preset on the mobile magnetic resonance equipment. Preferably, the acquiring the first image acquired by the first image acquisition device includes: acquiring an area map of a first area, determining a first position of a first image acquisition device and a first boundary line of the first area from the area map, and judging whether the first position is on the first boundary line or not; If yes, the corresponding first image acquisition device is used as a third image acquisition device; acquiring a shooting mode of a third image acquisition device; when the shooting mode is fixed angle shooting, taking the corresponding third image acquisition device as a fourth image acquisition device, and determining a fifth image acquisition device which cannot pick up the first area in the fourth image acquisition device; and eliminating a fifth image acquisition device in the first image acquisition devices, and acquiring the third images shot by the rest first image acquisition devices and taking the third images as the first images. Preferably, the judging module performs the following operations: performing feature extraction on the first image based on a preset feature extraction template to obtain a plurality of first image features; Matching the first image features with human body features in a preset human body feature library to obtain matching values; Accumulating and calculating a matching value to obtain a sum of the matching values; If the matching value sum is greater than or equal to a preset first threshold value, determining that at least one person to be identified exists in the first area; Judging whether the personnel to be identified are staff, and if not, taking the corresponding personnel to be identified as a reminding target. Preferably, the alarm module performs the following operations: Determining a second position of the reminding target in the first area based on the first image; acquiring a preset reminding trolley distribution diagram, determining the reminding trolley nearest to the seco