CN210181740U - Door state monitoring device and unattended remote anti-theft alarm system - Google Patents
Door state monitoring device and unattended remote anti-theft alarm system Download PDFInfo
- Publication number
- CN210181740U CN210181740U CN201921513469.XU CN201921513469U CN210181740U CN 210181740 U CN210181740 U CN 210181740U CN 201921513469 U CN201921513469 U CN 201921513469U CN 210181740 U CN210181740 U CN 210181740U
- Authority
- CN
- China
- Prior art keywords
- door
- door state
- unit
- state monitoring
- electrically connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Burglar Alarm Systems (AREA)
- Alarm Systems (AREA)
Abstract
The utility model aims at providing a door state monitoring device and an unattended remote anti-theft alarm system, the remote linkage anti-theft alarm system based on the door state monitoring is a remote anti-theft alarm system based on mobile internet communication, the anti-theft alarm is achieved through a door state monitoring module of infrared distance measurement, magnetic induction and a travel switch, the door state monitoring module is arranged at the inner side of a door frame of a power distribution station, and a door magnet is arranged at the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway through an M-Bus; after abnormal door actions are generated, the data gateway pushes the door state to the server side, and then the monitoring personnel are informed at the first time through the monitoring platform or the APP; the accuracy and effectiveness are ensured through multi-branch door state monitoring; and remote and reliable door state monitoring is realized.
Description
Technical Field
The utility model belongs to monitoring devices, concretely relates to door state monitoring devices and unmanned on duty long-range burglar alarm system.
Background
The door magnetic alarm mainly comprises a switch and a magnet, wherein the switch part is connected with a magnetic reed switch through a lead. Shaping and packaging; the magnet part is encapsulated in the plastic or alloy shell by a magnet with corresponding magnetic field intensity. When the two are separated or close to a certain distance, the switch is switched off so as to sense the change of the position of the object. The door magnetic alarm is widely applied to door and window installation in numerous fields such as city security, bank, telecommunication, electric power, judicial, residential quarter, factory, company, school, home, villa, warehouse and the like.
The existing door magnetic alarm induction device adopts unilateral door magnetic induction, has low detection precision, is easy to cause misjudgment and is not practical.
SUMMERY OF THE UTILITY MODEL
The utility model provides a door state monitoring devices has solved current door magnetism warning induction system and has adopted the unilateral door magnetism response, and it detects the precision low, causes erroneous judgement, unpractical problem very easily.
The utility model discloses the technical scheme who adopts does:
a door state monitoring device comprises a Hall switch monitoring unit for sensing a door magnetic signal, an infrared distance measuring module for monitoring the door distance, a travel switch signal detecting unit for installing a travel switch, and an information sending unit for sending signals; the Hall switch monitoring unit is electrically connected with the MCU processor, the infrared ranging module is electrically connected with the MCU processor, the travel switch signal detection unit is electrically connected with the MCU processor, and the information sending unit is electrically connected with the MCU processor. The door state monitoring module is arranged on the inner side of a door frame of the power distribution room, and the door magnet is arranged on the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway or connected with an alarm device through an M-Bus to directly alarm; when the door magnetic induction detects a magnetic field, the travel switch is in a normally closed state, and the infrared distance measurement distance is smaller than the set door opening distance, the door state monitoring module judges that the door is in a closed state, and normal information is sent out at the moment; when the magnetic induction of the door does not detect a magnetic field, the travel switch is in a normally open state, and the infrared distance measurement distance is greater than the set door opening distance, the door state monitoring module judges that the door is in an open state, and at the moment, alarm information is sent out; when the door is in other states, the door state monitoring module judges that the door is in a fault state, and sends out fault information at the moment; the door is detected in multiple modes, so that the detection precision is higher, the misjudgment rate is lower, and the practicability of the device is improved.
Further, the MCU processor is an STM32F030FXP6 processor.
Further, travel switch signal detection unit is including normally opening detection circuitry and normally closed detection circuitry, normally opening detection circuitry and normally closed detection circuitry all with be connected the plug pin seat J3 electricity and be connected, install travel switch on the plug pin seat J3.
Further, the information sending unit comprises a bus input circuit, a bus transceiving circuit and a control output circuit, wherein the bus input circuit comprises a socket J2, a bus is installed on the socket J2 for signal transmission, the bus transceiving circuit is electrically connected with the bus input circuit, an MCU processor and the control output circuit, the control output circuit is electrically connected with the MCU processor, a control signal output end of the control output circuit is connected with an external alarm device, and the control output circuit is used for receiving an alarm signal and controlling the external alarm device to alarm.
Further, the hall switch monitoring unit is a UHE4913G low power consumption hall effect switch.
The voltage stabilizing circuit comprises a voltage reducing chip, and the voltage reducing chip is electrically connected with a power supply and used for reducing voltage of the power supply; the voltage stabilizing circuit is electrically connected with the Hall switch monitoring unit, the infrared distance measuring module, the travel switch signal detecting unit and the MCU processor.
Further, the voltage reduction chip is a BL9341 chip.
An unattended remote anti-theft alarm system, which comprises a plurality of door state monitoring devices, a gateway box body, a server, an alarm unit and a terminal device, wherein the door state monitoring devices, the gateway box body, the server, the alarm unit and the terminal device are in any one of claims 1 to 7, a socket J2 of each door state monitoring device is connected to the gateway box body through an M-Bus, the gateway box body is wirelessly connected with the Internet, and the server and the terminal device acquire monitoring information from the Internet; the alarm unit is electrically connected with the control output circuit of the door state monitoring device. The remote linkage anti-theft alarm system based on the door state monitoring is a remote anti-theft alarm system based on mobile internet communication, and achieves anti-theft alarm through a door state monitoring module with infrared distance measurement, magnetic induction and a travel switch, wherein the door state monitoring module is installed on the inner side of a door frame of a power distribution room station, and a door magnet is installed on the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway through an M-Bus; after abnormal door actions are generated, the data gateway pushes the door state to the server side, and then the monitoring personnel are informed at the first time through the monitoring platform or the APP; the accuracy and effectiveness are ensured through multi-branch door state monitoring; and remote and reliable door state monitoring is realized.
Further, the gateway box body is also connected with a camera and/or a temperature and humidity acquisition unit. The method comprises the steps that a dynamic evidence obtaining function is achieved based on a video link, after an alarm is triggered, a camera is opened to obtain evidence, and the evidence obtaining video is uploaded to a server; therefore, the video information is not required to be continuously shot by a camera, a large storage space is occupied, resources are wasted, the video information is required to be continuously deleted and updated, and the video information cannot be stored for a long time; humiture acquisition unit real-time analysis station indoor humiture, analysis and warning propelling movement avoid high temperature, steam etc. to cause the damage to equipment.
The utility model discloses have following advantage and beneficial effect:
1. the door state monitoring device is arranged on the inner side of a door frame of a power distribution room, and the door magnet is arranged on the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway or connected with an alarm device through an M-Bus to directly alarm; when the door magnetic induction detects a magnetic field, the travel switch is in a normally closed state, and the infrared distance measurement distance is smaller than the set door opening distance, the door state monitoring module judges that the door is in a closed state, and normal information is sent out at the moment; when the magnetic induction of the door does not detect a magnetic field, the travel switch is in a normally open state, and the infrared distance measurement distance is greater than the set door opening distance, the door state monitoring module judges that the door is in an open state, and at the moment, alarm information is sent out; when the door is in other states, the door state monitoring module judges that the door is in a fault state, and sends out fault information at the moment; the door is detected in multiple modes, so that the detection precision is higher, the misjudgment rate is lower, and the practicability of the device is improved;
2. the unattended remote anti-theft alarm system is a remote anti-theft alarm system based on mobile internet communication, and achieves anti-theft alarm through a door state monitoring module of infrared distance measurement, magnetic induction and a travel switch, wherein the door state monitoring module is arranged on the inner side of a door frame of a power distribution room station, and a door magnet is arranged on the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway through an M-Bus; after abnormal door actions are generated, the data gateway pushes the door state to the server side, and then the monitoring personnel are informed at the first time through the monitoring platform or the APP; the accuracy and effectiveness are ensured through multi-branch door state monitoring; remote and reliable door state monitoring is realized;
3. the unattended remote anti-theft alarm system realizes the function of dynamic evidence collection based on the video link, and after the alarm is triggered, the camera is opened to collect the evidence and the evidence collection video is uploaded to the server; therefore, the video information is not required to be continuously shot by a camera, a large storage space is occupied, resources are wasted, the video information is required to be continuously deleted and updated, and the video information cannot be stored for a long time; humiture acquisition unit real-time analysis station indoor humiture, analysis and warning propelling movement avoid high temperature, steam etc. to cause the damage to equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic diagram of a module structure of the circuit of the present invention.
Fig. 2 is a circuit diagram of the MCU processor according to the embodiment of the present invention.
Fig. 3 is the circuit diagram of the hall switch monitoring unit according to the embodiment of the present invention.
Fig. 4 is a circuit diagram of the infrared distance measuring module according to the embodiment of the present invention.
Fig. 5 is a circuit diagram of the normally open detection circuit of the red travel switch signal detection unit according to the embodiment of the present invention.
Fig. 6 is a circuit diagram of a normally closed detection circuit of the red stroke switch signal detection unit according to the embodiment of the present invention.
Fig. 7 is a circuit diagram of an interface pin socket J3 of the red stroke switch signal detection unit according to the embodiment of the present invention.
Fig. 8 is a circuit diagram of a bus input circuit for implementing the information transmission unit of the present invention.
Fig. 9 is a circuit diagram of a bus transceiver circuit for implementing the information transmitting unit according to the present invention.
Fig. 10 is a circuit diagram of a control output circuit of an information transmission unit according to the present invention.
Fig. 11 is a circuit diagram of an embodiment of a voltage regulator circuit according to the present invention.
Fig. 12 is a circuit diagram of a display circuit according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
as shown in fig. 1 to 4, the present embodiment provides a door state monitoring device, which includes a hall switch monitoring unit for sensing a door magnetic signal, an infrared ranging module for monitoring a door distance, a travel switch signal detecting unit for installing a travel switch, and an information transmitting unit for transmitting a signal; the Hall switch monitoring unit is electrically connected with the MCU processor, the infrared ranging module is electrically connected with the MCU processor, the travel switch signal detection unit is electrically connected with the MCU processor, and the information sending unit is electrically connected with the MCU processor.
In particular implementation, as shown in FIG. 2, the MCU processor is an STM32F030FXP6 processor.
As shown in fig. 5, 6 and 7, in specific implementation, the travel switch signal detection unit includes a normally open detection circuit and a normally closed detection circuit, both of which are electrically connected to the connection plug pin seat J3, and the plug pin seat J3 is installed with a travel switch.
As shown in fig. 8, 9, and 10, in specific implementation, the information sending unit includes a bus input circuit, a bus transceiver circuit, and a control output circuit, where the bus input circuit includes a socket J2, a bus is installed on the socket J2 for signal transmission, the bus transceiver circuit is electrically connected to the bus input circuit, the MCU processor, and the control output circuit, the control output circuit is electrically connected to the MCU processor, a control signal output end of the control output circuit is connected to an external alarm device, and the control output circuit is configured to receive an alarm signal and control the external alarm device to alarm.
In particular implementation, as shown in fig. 3, the hall switch monitoring unit is a UHE4913G low power consumption hall effect switch.
As shown in fig. 11, in a specific implementation, the apparatus is provided with a voltage stabilizing circuit, where the voltage stabilizing circuit includes a voltage dropping chip, and the voltage dropping chip is electrically connected to the power supply to drop the voltage of the power supply; the voltage stabilizing circuit is electrically connected with the Hall switch monitoring unit, the infrared distance measuring module, the travel switch signal detecting unit and the MCU processor. The voltage reduction chip is a BL9341 chip.
As shown in fig. 12, in practical implementation, the MCU processor is further connected to a display circuit, the display circuit is formed by two 3-color LED lamps, and the blinking state represents different states of the device by controlling the color of the LED lamps.
During specific implementation, the door state monitoring device is installed on the inner side of a door frame of a power distribution room station, and the door magnet is installed on the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway or connected with an alarm device through an M-Bus to directly alarm; when the door magnetic induction detects a magnetic field, the travel switch is in a normally closed state, and the infrared distance measurement distance is smaller than the set door opening distance, the door state monitoring module judges that the door is in a closed state, and normal information is sent out at the moment; when the magnetic induction of the door does not detect a magnetic field, the travel switch is in a normally open state, and the infrared distance measurement distance is greater than the set door opening distance, the door state monitoring module judges that the door is in an open state, and at the moment, alarm information is sent out; when the door is in other states, the door state monitoring module judges that the door is in a fault state, and sends out fault information at the moment; the door is detected in multiple modes, so that the detection precision is higher, the misjudgment rate is lower, and the practicability of the device is improved.
Example 2
An unattended remote anti-theft alarm system adopts the door state monitoring device, the gateway box body, the server, the alarm unit and the terminal device in the embodiment 1, wherein a socket J2 of the door state monitoring device is connected to the gateway box body through an M-Bus, the gateway box body is wirelessly connected with the internet, and the server and the terminal device acquire monitoring information from the internet end; the alarm unit is electrically connected with the control output circuit of the door state monitoring device.
During specific implementation, the gateway box body is further connected with a camera and/or a temperature and humidity acquisition unit.
The remote linkage anti-theft alarm system based on the door state monitoring is a remote anti-theft alarm system based on mobile internet communication, and achieves anti-theft alarm through a door state monitoring module with infrared distance measurement, magnetic induction and a travel switch, wherein the door state monitoring module is installed on the inner side of a door frame of a power distribution room station, and a door magnet is installed on the inner side of a door panel; the door state is monitored in real time, including door magnetism, infrared distance measurement and travel switch monitoring, and the door state is analyzed and then transmitted to a data gateway through an M-Bus; after abnormal door actions are generated, the data gateway pushes the door state to the server side, and then the monitoring personnel are informed at the first time through the monitoring platform or the APP; the accuracy and effectiveness are ensured through multi-branch door state monitoring; remote and reliable door state monitoring is realized; the method comprises the steps that a dynamic evidence obtaining function is achieved based on a video link, after an alarm is triggered, a camera is opened to obtain evidence, and the evidence obtaining video is uploaded to a server; therefore, the video information is not required to be continuously shot by a camera, a large storage space is occupied, resources are wasted, the video information is required to be continuously deleted and updated, and the video information cannot be stored for a long time; humiture acquisition unit real-time analysis station indoor humiture, analysis and warning propelling movement avoid high temperature, steam etc. to cause the damage to equipment.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A door condition monitoring device, characterized by: the device comprises a Hall switch monitoring unit for sensing a door magnetic signal, an infrared distance measuring module for monitoring the door distance, a travel switch signal detecting unit for installing a travel switch, and an information sending unit for sending signals; the Hall switch monitoring unit is electrically connected with the MCU processor, the infrared ranging module is electrically connected with the MCU processor, the travel switch signal detection unit is electrically connected with the MCU processor, and the information sending unit is electrically connected with the MCU processor.
2. A door condition monitoring device according to claim 1, wherein: the MCU processor is an STM32F030FXP6 processor.
3. A door condition monitoring device according to claim 1, wherein: travel switch signal detection unit is including normally opening detection circuitry and normally closed detection circuitry, normally opening detection circuitry and normally closed detection circuitry all with be connected plug-pin seat (J3) electricity and be connected, install travel switch on plug-pin seat (J3).
4. A door condition monitoring device according to claim 1, wherein: the information sending unit comprises a bus input circuit, a bus transceiving circuit and a control output circuit, wherein the bus input circuit comprises a socket (J2), a bus is installed on the socket (J2) to transmit signals, the bus transceiving circuit is electrically connected with the bus input circuit, an MCU processor and the control output circuit, the MCU processor is electrically connected with the control output circuit, an external alarm device is connected with a control signal output end of the control output circuit, and the control output circuit is used for receiving alarm signals and controlling the external alarm device to alarm.
5. A door condition monitoring device according to claim 1, wherein: the Hall switch monitoring unit is a UHE4913G low-power consumption Hall effect switch.
6. A door condition monitoring device according to claim 1, wherein: the voltage stabilizing circuit comprises a voltage reducing chip, and the voltage reducing chip is electrically connected with the power supply and used for reducing voltage of the power supply; the voltage stabilizing circuit is electrically connected with the Hall switch monitoring unit, the infrared distance measuring module, the travel switch signal detecting unit and the MCU processor.
7. A door condition monitoring device according to claim 6, wherein: the voltage reduction chip is a BL9341 chip.
8. Unmanned on duty long-range burglar alarm system, its characterized in that: the system comprises a plurality of door state monitoring devices, a gateway box body, a server, an alarm unit and a terminal device, wherein the door state monitoring devices, the gateway box body, the server, the alarm unit and the terminal device are in any one of claims 1 to 7, a socket (J2) of each door state monitoring device is connected to the gateway box body through an M-Bus, the gateway box body is wirelessly connected with the Internet, and the server and the terminal device acquire monitoring information from the Internet; the alarm unit is electrically connected with a control output circuit of the door state monitoring device.
9. The unattended remote burglar alarm system according to claim 8, wherein: the gateway box body is further connected with a camera and/or a temperature and humidity acquisition unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921513469.XU CN210181740U (en) | 2019-09-11 | 2019-09-11 | Door state monitoring device and unattended remote anti-theft alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921513469.XU CN210181740U (en) | 2019-09-11 | 2019-09-11 | Door state monitoring device and unattended remote anti-theft alarm system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210181740U true CN210181740U (en) | 2020-03-24 |
Family
ID=69843107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921513469.XU Expired - Fee Related CN210181740U (en) | 2019-09-11 | 2019-09-11 | Door state monitoring device and unattended remote anti-theft alarm system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210181740U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012321A (en) * | 2021-02-20 | 2021-06-22 | 深圳零匙科技有限公司 | Door state monitoring system and monitoring method thereof |
| CN113092472A (en) * | 2021-04-08 | 2021-07-09 | 成都美特智控科技有限公司 | Environment-friendly intelligent self-checking oil smoke online monitoring system |
| CN113960943A (en) * | 2021-09-23 | 2022-01-21 | 德迅创新(深圳)有限公司 | Door state detection method based on multi-bin public service intelligent device |
-
2019
- 2019-09-11 CN CN201921513469.XU patent/CN210181740U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012321A (en) * | 2021-02-20 | 2021-06-22 | 深圳零匙科技有限公司 | Door state monitoring system and monitoring method thereof |
| CN113012321B (en) * | 2021-02-20 | 2022-03-15 | 深圳零匙科技有限公司 | Door state monitoring system and monitoring method thereof |
| CN113092472A (en) * | 2021-04-08 | 2021-07-09 | 成都美特智控科技有限公司 | Environment-friendly intelligent self-checking oil smoke online monitoring system |
| CN113960943A (en) * | 2021-09-23 | 2022-01-21 | 德迅创新(深圳)有限公司 | Door state detection method based on multi-bin public service intelligent device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210181740U (en) | Door state monitoring device and unattended remote anti-theft alarm system | |
| US20100033277A1 (en) | Peakpower energy management and control system method and apparatus | |
| CN106447998B (en) | Intelligent Distribution transformer and monitoring system | |
| CN103854400A (en) | Well lid intelligent monitoring device | |
| CN208188981U (en) | A kind of low-consumption wireless door sensor and remote alarming system | |
| CN208508613U (en) | A kind of intelligent substation monitoring system | |
| CN202856468U (en) | Integrated intelligent monitoring system suitable for substation direct current power supply | |
| CN112530131A (en) | Terminal box | |
| CN106997641A (en) | A kind of intelligent door electromagnetic induction system | |
| CN206989993U (en) | A kind of power distribution cabinet with real time monitoring function | |
| CN208314596U (en) | A kind of outside transformer substation bin condition monitoring system | |
| CN105321281B (en) | The detection system and method for battery check device and method, battery theft | |
| CN207354244U (en) | A kind of lifting cross sliding type mechanical parking equipment close to switching device | |
| CN213522615U (en) | Distributed Internet of things control box | |
| CN205508026U (en) | But remote alarm has door that vibrates induction system | |
| CN212256337U (en) | Complete set of electrical equipment thing networking intelligent acquisition system | |
| CN205213611U (en) | Remote monitoring vegetable greenhouse machine that leaks informaton | |
| CN207780917U (en) | Door sensor and Windows and door CAD system | |
| CN111897276A (en) | Controller and front-end acquisition system | |
| CN218156259U (en) | Switching station multi-information wireless monitoring system | |
| CN215733669U (en) | Intelligent monitoring equipment for power consumption of switch cabinet equipment | |
| CN105333964A (en) | Intelligent online temperature monitoring system | |
| CN218415403U (en) | Digital regulator cubicle | |
| CN219223955U (en) | Temperature monitoring system | |
| CN207440154U (en) | A kind of Multifunctional intelligent electric energy meter case |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 Termination date: 20210911 |