CN210721751U - Safety monitoring device - Google Patents

Safety monitoring device Download PDF

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Publication number
CN210721751U
CN210721751U CN201922331176.6U CN201922331176U CN210721751U CN 210721751 U CN210721751 U CN 210721751U CN 201922331176 U CN201922331176 U CN 201922331176U CN 210721751 U CN210721751 U CN 210721751U
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China
Prior art keywords
detector
management server
information
monitor
current area
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Active
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CN201922331176.6U
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Chinese (zh)
Inventor
李鹏飞
李佳
李慧
赵彬平
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China Unicom Internet of Things Corp Ltd
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China Unicom Internet of Things Corp Ltd
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Abstract

The utility model provides a safety monitoring device, which comprises a first detector, a second detector and a monitoring server, wherein the first detector is used for sending first prompt information for indicating that a target object enters a current area to the management server if the target object is determined to enter the current area; the monitor is used for shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the first indication information and sending the video information to the management server; and the management server is used for sending first indication information to the monitor according to the first prompt information, and sending first alarm prompt information to the application terminal if the target object is determined to be illegally accessed according to the video information sent by the monitor. Therefore, the management server is added in the safety monitoring device, so that the management server can be used for carrying out image analysis on the video shot by the monitor, and determining whether corresponding alarm measures are needed or not according to the analysis result, thereby avoiding the condition of abnormal false alarm.

Description

Safety monitoring device
Technical Field
The utility model relates to a safe technical field especially relates to a safety monitoring device.
Background
The monitoring device plays an increasingly important role in production and life, becomes an indispensable safety barrier in life of people, and particularly has a self-evident need for monitoring in public areas such as hospitals, banks, supermarkets, shops and the like, so that different types of safety monitoring devices appear.
In the prior art, the safety monitoring device consists of an infrared sensor and a host with a loudspeaker, wherein one host is connected with a plurality of infrared sensors in a wired mode, and once the infrared sensors detect the invasion of a person, the host buzzes and gives an alarm on site so as to remind related responsible persons.
However, the monitoring device in the prior art may give an abnormal false alarm, for example, when an animal such as a kitten or a puppy is present in the detection range, an alarm may be given.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a safety monitoring device through increase management server in safety monitoring device for can carry out image analysis through the video that management server shot to the watch-dog, and confirm whether need carry out corresponding alarm measure according to the analysis result, avoid appearing the condition of unusual wrong report.
The utility model provides a safety monitoring device, which comprises a first detector, a monitor, a management server and an application terminal, wherein the management server is respectively connected with the monitor, the first detector and the application terminal;
the first detector is used for detecting whether a target object enters the current area or not, and if the target object is determined to enter the current area, first prompt information is sent to the management server; the first prompt information is used for indicating that a target object enters the current area;
the monitor is used for receiving first indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the first indication information, and sending the video information to the management server;
and the management server is used for sending the first indication information to the monitor according to the first prompt information, and sending first alarm prompt information to the application terminal if the target object is determined to be illegally entered according to the video information sent by the monitor.
In a second aspect, the present invention provides another safety monitoring device, further comprising a second detector, wherein the second detector is connected to the management server;
the second detector is used for detecting whether smoke is generated in the current area or not, and if the smoke is determined to be generated in the current area, second prompt information is sent to the management server; the second prompting message is used for indicating that smoke is generated in the current area;
the monitor is further configured to receive second indication information sent by the management server, shoot video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the second indication information, and send the video information to the management server;
and the management server is further configured to send the second indication information to the monitor according to the second indication information, and send second alarm indication information to the application terminal if it is determined that a fire disaster occurs in the current area according to the video information sent by the monitor.
In a third aspect, the present invention provides another safety monitoring device, further comprising a third detector, wherein the third detector is connected to the management server;
the third detector is used for detecting whether natural gas or coal gas leakage exists in the current area, and if the natural gas or coal gas leakage exists in the current area, third prompt information is sent to the management server; the third prompt message is used for indicating that natural gas or coal gas leaks in the current area;
the monitor is further configured to receive third indication information sent by the management server, shoot video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the third indication information, and send the video information to the management server;
the management server is further configured to send the third indication information to the monitor according to the third prompt information, and send third warning prompt information to the application terminal if it is determined that natural gas or coal gas leakage occurs in the current region according to the video information sent by the monitor.
Optionally, the application terminal is configured to output an alarm prompt to the user according to the alarm prompt information.
Optionally, the first detector is an infrared detector.
Optionally, the second detector is a smoke detector.
Optionally, the third detector is a gas detector.
Optionally, the first detector is mounted above a door or window in the current region.
Optionally, the second detector is mounted at a position where the height is less than 6 meters and the roof slope is less than 15 degrees in the current zone.
Optionally, a power supply battery is disposed in each of the monitor, the first detector, the second detector and the third detector.
The utility model provides a safety monitoring device, which comprises a first detector, a monitor, a management server and an application terminal, wherein the first detector is used for detecting whether a target object enters the current area or not, and if the target object enters the current area, first prompt information is sent to the management server; the first prompt information is used for indicating that a target object enters the current area; the monitor is used for receiving the first indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the first indication information, and sending the video information to the management server; and the management server is used for sending first indication information to the monitor according to the first prompt information, and sending first alarm prompt information to the application terminal if the target object is determined to be illegally accessed according to the video information sent by the monitor. Therefore, the utility model provides a safety monitoring device through increase management server in safety monitoring device for can carry out image analysis through the video that management server shot to the watch-dog, and confirm whether need carry out corresponding alarm measure according to the analysis result, avoid appearing the condition of unusual wrong report.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a safety monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another safety monitoring device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another safety monitoring device according to an embodiment of the present invention.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In the description of the present invention, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, and in the drawings, if any, of the embodiments of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
The use place of the safety monitoring device is a public place where the safety monitoring device is installed, for example: the present invention relates to a security monitoring device, and more particularly, to a security monitoring device for a security monitoring device, which is used in a security monitoring device for a security monitoring device, and a security monitoring device for a security monitoring device.
Fig. 1 is a schematic structural diagram of a safety monitoring device provided in the present invention, as shown in fig. 1, the safety monitoring device includes a first detector, a monitor, a management server, and an application terminal.
The management server is respectively connected with the monitor, the first detector and the application terminal.
The first detector is used for detecting whether a target object enters the current area or not, and if the target object is determined to enter the current area, first prompt information is sent to the management server; the first prompt information is used for indicating that a target object enters the current area;
wherein, first detector is infrared detector, or has similar function's detector, the utility model discloses do not restrict this. The target object is a human body, and the animal, for example: cats, dogs, etc. are not counted. The current region refers to all regions within the range that the first detector can detect.
It should be noted that, the first detector is configured to detect whether a target object passes through a door or a window of a store, and when the first detector senses that the target object passes through the door or the window, the first detector sends first prompt information to a management server wirelessly connected to the first detector, where the first prompt information is used to indicate that the target object passes through the door or the window of the store.
The monitor is used for receiving the first indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the first indication information, and sending the video information to the management server;
and the management server is used for sending first indication information to the monitor according to the first prompt information, and sending first alarm prompt information to the application terminal if the target object is determined to be illegally accessed according to the video information sent by the monitor.
The management server is configured to receive first prompt information sent by a first detector, determine, according to the first prompt information, that the detector sending the first prompt information is a first detector, that is, an infrared detector, so as to determine position information of the first detector, and send first indication information to the monitor, where the first indication information includes monitoring position information of the monitor and a shooting command; the monitoring position information refers to a position close to a door or a window near a first detector which sends first prompt information. The monitor is used for receiving first indication information sent by the management server, rotating a camera of the monitor to a position close to a door or a window near a first detector sending first prompt information according to monitoring position information and a shooting command contained in the first indication information, then shooting video information of the position, and sending the shot video information to the management server in a wireless mode Short message, e-mail, fax, telephone, etc. to inform the relevant responsible person.
The embodiment of the utility model provides a safety monitoring device, including first detector, monitor, management server and application terminal; the first detector is used for detecting whether a target object enters the current area or not, and if the target object is determined to enter the current area, first prompt information is sent to the management server; the first prompt information is used for indicating that a target object enters the current area; the monitor is used for receiving the first indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the first indication information, and sending the video information to the management server; and the management server is used for sending first indication information to the monitor according to the first prompt information, and sending first alarm prompt information to the application terminal if the target object is determined to be illegally accessed according to the video information sent by the monitor. Therefore, the utility model provides a safety monitoring device through increase management server in safety monitoring device for can carry out image analysis through the video that management server shot to the watch-dog, and confirm whether need carry out corresponding alarm measure according to the analysis result, avoid appearing the condition of unusual wrong report.
Fig. 2 is a schematic structural diagram of another safety monitoring device provided by the present invention, as shown in fig. 2, on the basis of the embodiment shown in fig. 1, the safety monitoring device further includes a second detector, and the second detector is connected with the management server.
The second detector is used for detecting whether smoke is generated in the current area or not, and if the smoke is determined to be generated in the current area, the second detector sends second prompt information to the management server; the second prompt message is used for indicating that smoke is generated in the current area;
wherein, the second detector is smoke detector, or has similar function's detector, the utility model discloses do not restrict to this. The current region refers to all regions within the range that the second detector can detect.
It should be noted that the second detector is configured to detect whether smoke is generated in all regions in the range that the second detector can detect, and if smoke is generated in all regions in the range that the second detector can detect, send a second prompt message to the management server through the wireless network, where the second prompt message is used to indicate that smoke is generated in all regions in the range that the second detector can detect.
And the monitor is also used for receiving second indication information sent by the management server, shooting video information of the position indicated by the monitoring position information in the current area according to the monitoring position information in the second indication information, and sending the video information to the management server.
And the management server is also used for sending second indication information to the monitor according to the second indication information, and sending second alarm indication information to the application terminal if the fire disaster in the current area is determined according to the video information sent by the monitor.
The management server is further configured to receive second prompt information sent by a second detector, determine, according to the second prompt information, that the detector sending the second prompt information is a second detector, that is, a smoke detector, so as to determine position information of the second detector, and send second indication information to the monitor, where the second indication information includes monitoring position information of the monitor and a shooting command; the monitoring position information refers to a position in a range which can be detected by a second detector sending second prompt information. The monitor is used for receiving second indication information sent by the management server, rotating a camera of the monitor to a position in a range which can be detected by a second detector sending the second indication information according to monitoring position information and a shooting command contained in the second indication information, then shooting video information at the position, and sending the shot video information to the management server in a wireless mode, after the management server receives the video information, analyzing the video information by using an image analysis algorithm to judge whether an open fire or an existing fire happens in the current region, if the open fire or the existing fire happens, sending the second alarm indication information to the application terminal, and if the open fire or the existing fire does not happen, not sending the second alarm indication information to the application terminal, wherein the form of the second alarm indication information comprises a webpage sent to the application terminal, and a shooting command, Short message, e-mail, fax, telephone, etc. to inform the relevant responsible person.
The embodiment of the utility model provides a safety monitoring device still includes the second detector, and the second detector is used for surveying whether there is smog in the current region to produce, if confirm that there is smog in the current region to produce, then send second prompt message to the management server; the second prompt message is used for indicating that smoke is generated in the current area; the monitor is also used for receiving second indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the second indication information, and sending the video information to the management server; and the management server is also used for sending second indication information to the monitor according to the second indication information, and sending second alarm indication information to the application terminal if the fire disaster in the current area is determined according to the video information sent by the monitor. Therefore, the utility model provides a safety monitoring device through increase management server in safety monitoring device for can carry out image analysis through the video that management server shot to the watch-dog, and confirm whether need carry out corresponding alarm measure according to the analysis result, avoid appearing the condition of unusual wrong report.
Fig. 3 is a schematic structural diagram of another safety monitoring device provided by the present invention, as shown in fig. 3, on the basis of any one of the embodiments shown in fig. 1 or fig. 2, the safety monitoring device further includes a third detector, and the third detector is connected to the management server.
The third detector is used for detecting whether natural gas or coal gas leaks in the current area, and if the natural gas or coal gas leaks in the current area, the third detector sends third prompt information to the management server; the third prompt message is used for indicating that natural gas or gas leaks in the current area.
Wherein, the third detector is gas detector, or has the detector of similar function, the utility model discloses do not restrict to this. The current region refers to all regions within a range that the third detector can detect.
It should be noted that the third detector is configured to detect whether natural gas or gas leaks in all the regions in the range that the third detector can detect, and if natural gas or gas leaks in all the regions in the range that the third detector can detect, send a third prompt message to the management server through the wireless network, where the third prompt message is used to indicate that natural gas or gas leaks in all the regions in the range that the third detector can detect.
The monitor is also used for receiving third indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the third indication information, and sending the video information to the management server;
and the management server is also used for sending third indication information to the monitor according to the third prompt information, and sending third alarm prompt information to the application terminal if the natural gas or gas leakage in the current area is determined according to the video information sent by the monitor.
The management server is further configured to receive third prompt information sent by a third detector, determine, according to the third prompt information, that the detector sending the third prompt information is a third detector, that is, a gas detector, so as to determine position information of the third detector, and send third indication information to the monitor, where the third indication information includes monitoring position information of the monitor and a shooting command; the monitoring position information refers to a position in a range which can be detected by a third detector which sends third prompt information. The monitor is used for receiving third indication information sent by the management server, rotating a camera of the monitor to a position in a range which can be detected by a third detector sending third prompt information according to monitoring position information and a shooting command contained in the third indication information, then shooting video information at the position, and sending the shot video information to the management server in a wireless mode, after the management server receives the video information, analyzing the video information by using an image analysis algorithm to judge whether natural gas or coal gas leaks in the current region, if the natural gas or the coal gas leaks, sending the third alarm prompt information to the application terminal, and if the natural gas or the coal gas leaks, not sending the third alarm prompt information to the application terminal, wherein the form of the third alarm prompt information comprises a webpage, a short message and the like sent to the application terminal, e-mail, fax, telephone, etc., to notify the relevant responsible person.
The embodiment of the utility model provides a safety monitoring device still includes the third detector, and the third detector is used for surveying whether there is natural gas or coal gas leakage in the current district, if confirm that there is natural gas or coal gas leakage in the current district, then send third prompt information to the management server; the third prompt message is used for indicating that natural gas or coal gas leaks in the current area; the monitor is also used for receiving third indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the third indication information, and sending the video information to the management server; and the management server is also used for sending third indication information to the monitor according to the third prompt information, and sending third alarm prompt information to the application terminal if the natural gas or gas leakage in the current area is determined according to the video information sent by the monitor. Therefore, the utility model provides a safety monitoring device through increase management server in safety monitoring device for can carry out image analysis through the video that management server shot to the watch-dog, and confirm whether need carry out corresponding alarm measure according to the analysis result, avoid appearing the condition of unusual wrong report.
It should be noted that, the safety monitoring devices in the embodiments shown in fig. 1 to fig. 3 may be combined arbitrarily to better monitor and alarm the current monitored area, for example, if the embodiment shown in fig. 1 is combined with the embodiment shown in fig. 2, it may be simultaneously monitored whether a target object illegally enters the current area and whether a fire disaster occurs due to smoke occurrence, so as to notify the relevant responsible person in time; if the embodiment shown in fig. 1 is combined with the embodiment shown in fig. 3, it is possible to simultaneously monitor whether a target object illegally enters a current area and whether explosion occurs due to leakage of natural gas or coal gas, thereby timely notifying a relevant responsible person; if the embodiment shown in fig. 1, the embodiment shown in fig. 2 and the embodiment shown in fig. 3 are combined, it is possible to simultaneously monitor whether a target object illegally enters a current area, whether a fire occurs due to smoke generation, and whether an explosion occurs due to leakage of natural gas or gas, thereby timely notifying a relevant person in charge.
It can be understood that the application terminal in the embodiments shown in fig. 1 to fig. 3 is configured to output an alert prompt to a user according to the alert prompt information.
The application terminal includes any one of a desktop computer, a notebook, a Personal digital assistant (PDA for short), a smart phone, a tablet computer, and the like. The alarm prompting mode can be that a webpage, a short message, an e-mail, a fax or a call is dialed to the user, and the related responsible person is informed in time, and can view the webpage, the short message, the e-mail or the fax and view the video information after receiving the alarm prompt, so that the site condition of the alarm information is known and the user can arrive at the site in time.
For the installation position of the first detector and the second detector, in a possible implementation mode, the first detector is installed above a door or a window in the current area; the second detector is arranged at a position with the height less than 6 meters and the roof slope less than 15 degrees in the current area;
optionally, the monitor, the first detector, the second detector and the third detector are all provided with power supply batteries without power supplies; monitor, management server, application end, first detector, second detector and third detector are wireless device, communicate through wireless network, need not the wiring during installation, easy dismouting.
Optionally, the monitor, the first detector, the second detector and the third detector report heartbeat data to the management server at regular time, and the management server analyzes the heartbeat data, so that the running states of the monitor, the first detector, the second detector and the third detector can be mastered in real time.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A safety monitoring device is characterized by comprising a first detector, a monitor, a management server and an application terminal, wherein the management server is respectively connected with the monitor, the first detector and the application terminal;
the first detector is used for detecting whether a target object enters the current area or not, and if the target object is determined to enter the current area, first prompt information is sent to the management server; the first prompt information is used for indicating that a target object enters the current area;
the monitor is used for receiving first indication information sent by the management server, shooting video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the first indication information, and sending the video information to the management server;
and the management server is used for sending the first indication information to the monitor according to the first prompt information, and sending first alarm prompt information to the application terminal if the target object is determined to be illegally entered according to the video information sent by the monitor.
2. The security monitoring device of claim 1, further comprising a second probe, the second probe being connected to the management server;
the second detector is used for detecting whether smoke is generated in the current area or not, and if the smoke is determined to be generated in the current area, second prompt information is sent to the management server; the second prompting message is used for indicating that smoke is generated in the current area;
the monitor is further configured to receive second indication information sent by the management server, shoot video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the second indication information, and send the video information to the management server;
and the management server is further configured to send the second indication information to the monitor according to the second indication information, and send second alarm indication information to the application terminal if it is determined that a fire disaster occurs in the current area according to the video information sent by the monitor.
3. The security monitoring device of claim 1, further comprising a third probe, the third probe being connected to the management server;
the third detector is used for detecting whether natural gas or coal gas leakage exists in the current area, and if the natural gas or coal gas leakage exists in the current area, third prompt information is sent to the management server; the third prompt message is used for indicating that natural gas or coal gas leaks in the current area;
the monitor is further configured to receive third indication information sent by the management server, shoot video information of a position indicated by the monitoring position information in the current area according to the monitoring position information in the third indication information, and send the video information to the management server;
the management server is further configured to send the third indication information to the monitor according to the third prompt information, and send third warning prompt information to the application terminal if it is determined that natural gas or coal gas leakage occurs in the current region according to the video information sent by the monitor.
4. The safety monitoring device according to any one of claims 1 to 3,
and the application terminal is used for outputting an alarm prompt to the user according to the alarm prompt information.
5. The safety monitoring device according to any one of claims 1 to 3,
the first detector is an infrared detector.
6. The security monitoring device of claim 2,
the second detector is a smoke detector.
7. The safety monitoring device of claim 3,
the third detector is a gas detector.
8. The safety monitoring device according to any one of claims 1 to 3,
the first detector is mounted above a door or window in the current zone.
9. The safety monitoring device according to claim 2 or 6,
the second detector is installed at a position where the height is less than 6 meters and the roof slope is less than 15 degrees in the current zone.
10. The security monitoring device of claim 2,
and power supply batteries are arranged in the monitor, the first detector and the second detector.
CN201922331176.6U 2019-12-23 2019-12-23 Safety monitoring device Active CN210721751U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922331176.6U CN210721751U (en) 2019-12-23 2019-12-23 Safety monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922331176.6U CN210721751U (en) 2019-12-23 2019-12-23 Safety monitoring device

Publications (1)

Publication Number Publication Date
CN210721751U true CN210721751U (en) 2020-06-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922331176.6U Active CN210721751U (en) 2019-12-23 2019-12-23 Safety monitoring device

Country Status (1)

Country Link
CN (1) CN210721751U (en)

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