CN111540146A - Safe distance real-time monitoring method and device - Google Patents
Safe distance real-time monitoring method and device Download PDFInfo
- Publication number
- CN111540146A CN111540146A CN202010453697.3A CN202010453697A CN111540146A CN 111540146 A CN111540146 A CN 111540146A CN 202010453697 A CN202010453697 A CN 202010453697A CN 111540146 A CN111540146 A CN 111540146A
- Authority
- CN
- China
- Prior art keywords
- real
- detection device
- terminal
- local detection
- monitoring
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention relates to the technical field of electric power construction, and particularly discloses a real-time safety distance monitoring method and a real-time safety distance monitoring device, wherein the real-time safety distance monitoring device comprises a local detection device worn by constructors and a terminal monitoring device monitored by monitors, and the method comprises the following steps: the local detection device carries out non-contact sensing on the electric field intensity; judging whether the alarm condition is met or not according to the sensing result; if yes, the local detection device sends local warning information to remind constructors; the terminal monitoring device sends terminal warning information to remind monitoring staff. The invention provides a real-time safety distance monitoring method and a real-time safety distance monitoring device, which can automatically remind construction personnel of crossing lines, so that the personal safety of the construction personnel is ensured, and the risk of electric shock accidents is reduced.
Description
Technical Field
The invention relates to the technical field of electric power construction, in particular to a method and a device for monitoring a safe distance in real time.
Background
According to the requirement of the power regulation, when a constructor carries out live-line work, the constructor, tools and live objects are kept beyond the safety distance specified by the equipment voltage level so as to avoid safety accidents.
However, in actual work, the construction personnel often have an over-line behavior within the safe distance due to various factors, for example, an operation space is limited or the experience of the construction personnel is insufficient, so that an error occurs in mastering the safe distance, and the like.
At present, the mode of preventing that constructor from crossing the line mainly relies on constructor to pay attention to by oneself, does not have relevant automatic suggestion equipment, however, constructor is absorbed in work easily and can't keep vigilant nature to safe distance constantly when actual work, consequently, the risk of electrocuteeing still is higher.
In summary, a monitoring method is needed, which can automatically remind the constructors when the constructors cross the line, so as to ensure the personal safety of the constructors and reduce the risk of electric shock accidents.
Disclosure of Invention
One object of the present invention is to provide a method and an apparatus for monitoring a safe distance in real time, which can automatically remind a constructor of going offline, ensure personal safety of the constructor, and reduce the risk of electric shock accidents.
To achieve the above object, in one aspect, the present invention provides a real-time safe distance monitoring method, which is suitable for a real-time safe distance monitoring device including a local detection device worn by a constructor and a terminal monitoring device monitored by a supervisor, the method including:
the local detection device carries out non-contact sensing on the electric field intensity;
judging whether the alarm condition is met or not according to the sensing result; if so,
the local detection device sends local warning information to remind constructors;
the terminal monitoring device sends terminal warning information to remind monitoring staff.
Preferably, the judgment of whether the alarm condition is met or not is carried out according to the sensing result; if yes, the method further comprises the following steps:
and sending the judgment result to the terminal monitoring device.
Preferably, the terminal monitoring device sends the terminal warning information to remind the monitoring staff to include:
acquiring the number of the local detection device which sends the judgment result;
sounding;
and illuminating an indicator lamp corresponding to the local detection device.
Preferably, before the local detection device performs non-contact sensing on the electric field strength, the local detection device further includes:
numbering a plurality of local detection devices and a plurality of indicator lamps respectively;
and establishing a one-to-one correspondence relationship between the local detection device and the indicator lamp.
Preferably, the judging whether the alarm condition is met according to the sensing result includes:
calculating the actual distance between the local detection device and the charged object according to the actual voltage of the charged object and the sensed electric field intensity;
judging whether the actual distance is smaller than a safe distance; if yes, the alarm condition is met; if not, the alarm condition is not met.
Preferably, before the local detection device performs non-contact sensing on the electric field strength, the local detection device further includes:
and setting a safety distance.
Preferably, the method further comprises the following steps:
and after the distance is within the safe distance, the local warning information and the terminal warning information change along with the actual distance.
On the other hand, the invention also provides a safe distance real-time monitoring device, which is used for executing the safe distance real-time monitoring method and comprises a local detection device worn by constructors and a terminal monitoring device monitored by monitors, wherein the local detection device comprises a monitoring device body and a monitoring device body, and the monitoring device body comprises a monitoring device body and a monitoring device body, wherein the monitoring device body comprises a monitoring device body, a monitoring device:
the local detection device includes:
the electric field intensity sensor is used for carrying out non-contact sensing on the electric field intensity;
the local processor is used for judging whether the alarm condition is met or not according to the sensing result;
the local warning device is used for sending local warning information to remind constructors when the warning condition is met;
the terminal monitoring device includes:
and the terminal warning device is used for sending terminal warning information to remind a supervisor.
Preferably, the local detection device further includes:
and the wireless transceiving module is used for sending the judgment result to the terminal monitoring device.
Preferably, the terminal monitoring device further includes a terminal processor, configured to:
numbering a plurality of local detection devices and a plurality of indicator lamps respectively;
establishing a one-to-one corresponding relation between a local detection device and an indicator light;
acquiring the number of the local detection device which sends the judgment result;
the control terminal warning device sends out a buzzer sound;
and illuminating an indicator lamp corresponding to the local detection device.
The invention has the beneficial effects that: the method and the device for monitoring the safety distance in real time are provided, when a constructor carries out line crossing behavior, the sensed electric field intensity is overlarge, then warning information is sent to the constructor and a monitor respectively, and the line crossing reminding effect is guaranteed through double reminding measures, so that the personal safety of the constructor is guaranteed, and the risk of electric shock accidents is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the present embodiment or the prior art, the drawings needed to be used in the description of the embodiment or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings according to these drawings without inventive labor.
Fig. 1 is a flowchart of a safety distance real-time monitoring method according to an embodiment of the present invention;
fig. 2 is a block diagram of a local detection apparatus according to a second embodiment of the present invention;
fig. 3 is a block diagram of a terminal monitoring device according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The embodiment provides a safe distance real-time monitoring method, which is suitable for a safe distance monitoring application scene in the field of power construction, can remind constructors of keeping a safe distance from a charged object, and reduces electric shock risks of the constructors.
Fig. 1 is a flowchart of a method for monitoring a safe distance in real time according to a first embodiment of the present invention.
Referring to fig. 1, the real-time safe distance monitoring method is applicable to a real-time safe distance monitoring device, the real-time safe distance monitoring device comprises a local detection device worn by constructors and a terminal monitoring device monitored by monitors, and the method comprises the following steps:
s10: the local detection device performs non-contact sensing of electric field strength.
Specifically, the local detection device may perform sensing of the electric field strength by a non-contact electric field strength sensor.
S20: judging whether the alarm condition is met or not according to the sensing result; if yes, the process proceeds to the next step.
Specifically, S20 includes:
s201: calculating the actual distance between the local detection device and the charged object according to the actual voltage of the charged object and the sensed electric field intensity;
s202: judging whether the actual distance is smaller than a safe distance; if yes, the alarm condition is met; if not, the alarm condition is not met;
it can be understood that, when the charged object is stationary and its actual voltage is kept constant, the closer to the charged object, the stronger the electric field strength, the farther from the charged object, the more the electric field strength, and the closer the constructor is currently working near the 10kV line and equipment, so the actual voltage can be set to 10 kV. Of course, the actual voltage can be changed to other values according to actual needs.
It should be noted that the calculation formulas of the actual voltage, the electric field strength and the distance of the electric field strength sensors produced by different manufacturers are different, but all belong to the prior art, and are not the key points of the present application, so that the details are not repeated.
Preferably, the safe distance may be set in advance according to the power regulation, and for example, the safe distance corresponding to a 10kV charged object may be set to 3 m. Once the actual distance is less than 3m, an alarm condition is met.
S30: the local detection device sends local warning information to remind constructors.
Optionally, the local detection device includes a local buzzer, and the local warning information is a buzzer sound emitted by the local buzzer.
When actual distance is less than safe distance, local bee calling organ sends the buzzing sound, and the constructor who has worn local detection device hears the buzzing sound and just knows oneself and has crossed the line, so can play effectual warning effect, avoid the constructor owing to be absorbed in work and forget the emergence of keeping the safe distance condition.
S40: and sending the judgment result to the terminal monitoring device.
Preferably, the wireless communication module can be used for sending the judgment result in a wireless communication mode. In order to reduce power consumption, the wireless communication module starts to receive and transmit signals only when the actual distance is smaller than the safe distance, and the wireless communication module is in a standby state at ordinary times, so that the endurance time of the local detection device can be effectively prolonged.
S50: the terminal monitoring device sends terminal warning information to remind monitoring staff.
It should be noted that, in order to prevent that constructor from excessively concentrating on and not perceiving local warning information, so can also send terminal warning information through terminal monitoring device, after the supervision personnel received terminal warning information, correspond immediately and find the constructor of crossing the line and remind it.
Preferably, S50 includes:
s501: acquiring the number of the local detection device which sends the judgment result;
s502: sounding;
s503: and illuminating an indicator lamp corresponding to the local detection device.
Generally, a plurality of constructors may be in a work place, but the number of the monitors is only one, so that the monitors can conveniently and quickly find out the line-crossing constructors, the local detection devices can be numbered, and correspondingly, an indicator lamp is configured for each local detection device, so that the operators can quickly know which constructor has the line-crossing behavior only by observing which indicator lamp is on.
The terminal detection device that this embodiment provided only disposes a terminal buzzer, and no matter which local detection device sends the judged result and reminds the supervisor by this terminal buzzer warning, can practice thrift manufacturing cost.
It will be appreciated that before using the local detection means, the local detection means should be brought into communication with the terminal monitoring means, which then respectively number the local detection means and the indicator lights in advance; and then establishing a one-to-one corresponding relation between the local detection device and the indicator lamp.
Optionally, when the actual distance is smaller than the safety distance, the local warning information and the terminal warning information change with the actual distance. For example, when the actual distance is smaller, the sound of both the local buzzer and the terminal buzzer is more rapid and sharp, the flashing frequency of the indicator lamp is faster, and the like, so that the reminding function is enhanced.
The safe distance real-time monitoring method provided by the embodiment can be used for the safe distance monitoring situation in the technical field of electric power construction, when the construction personnel take over the line, the electric field intensity sensed by the method is too large, then warning information is sent to the construction personnel and the monitoring personnel respectively, and the line-crossing warning effect is guaranteed through double warning measures, so that the personal safety of the construction personnel is guaranteed, and the risk of electric shock accidents is reduced.
Example two
The real-time safety distance monitoring device provided by the embodiment of the invention can be used for executing the real-time safety distance monitoring method provided by the embodiment of the invention, and has corresponding functions and beneficial effects.
The safe distance real-time monitoring device comprises a local detection device 1 worn by constructors and a terminal monitoring device monitored by monitoring personnel:
referring to fig. 2, the local detection device 1 includes:
an electric field strength sensor 101 for performing non-contact sensing of an electric field strength;
the local processor 102 is configured to determine whether an alarm condition is met according to the sensing result;
the local warning device 103 is used for sending local warning information to remind constructors when the alarm condition is met; preferably, the local warning device is a local buzzer;
and the wireless transceiver module 104 is configured to send the determination result to the terminal monitoring device.
Referring to fig. 3, the terminal monitoring apparatus includes:
the terminal warning device is used for sending terminal warning information to remind a supervisor; preferably, the terminal warning device is a terminal buzzer 2011 and an indicator lamp 2012;
a terminal processor 202 configured to:
numbering a plurality of local detection devices and a plurality of indicator lamps respectively;
establishing a one-to-one corresponding relation between a local detection device and an indicator light;
acquiring the number of the local detection device which sends the judgment result;
the control terminal warning device sends out a buzzer sound;
and illuminating an indicator lamp corresponding to the local detection device.
Optionally, the local detection device in this embodiment may be disposed in an article such as a work suit, a safety helmet, or an insulating glove of a constructor, or may be manufactured as an external module, and fixed on the body of the constructor by a pin, a strap, or the like.
In the embodiments provided in the present application, it should be understood that the disclosed system, unit, apparatus and method may be implemented in other ways. For example, all the embodiments described above are merely illustrative, and for example, the division of the above units or modules is only one logical function division, and there may be other divisions when the actual implementation is performed, for example, a plurality of units, modules and 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 units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a computer-readable storage medium and includes instructions for causing a terminal device (which may be a mobile phone, a notebook, or other electronic device) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A safe distance real-time monitoring method is suitable for a safe distance real-time monitoring device, the safe distance real-time monitoring device comprises a local detection device worn by constructors and a terminal monitoring device monitored by monitoring personnel, and the safe distance real-time monitoring method is characterized by comprising the following steps:
the local detection device carries out non-contact sensing on the electric field intensity;
judging whether the alarm condition is met or not according to the sensing result; if so,
the local detection device sends local warning information to remind constructors;
the terminal monitoring device sends terminal warning information to remind monitoring staff.
2. The real-time safety distance monitoring method according to claim 1, wherein the judgment of whether an alarm condition is met is made according to the sensing result; if yes, the method further comprises the following steps:
and sending the judgment result to the terminal monitoring device.
3. The real-time safety distance monitoring method according to claim 2, wherein the sending of the terminal alarm information by the terminal monitoring device to remind the monitoring personnel comprises:
acquiring the number of the local detection device which sends the judgment result;
sounding;
and illuminating an indicator lamp corresponding to the local detection device.
4. The method for monitoring the safe distance in real time according to claim 3, wherein before the local detection device performs the non-contact sensing of the electric field intensity, the method further comprises:
numbering a plurality of local detection devices and a plurality of indicator lamps respectively;
and establishing a one-to-one correspondence relationship between the local detection device and the indicator lamp.
5. The real-time safety distance monitoring method according to claim 4, wherein the judging whether the alarm condition is met according to the sensing result comprises:
calculating the actual distance between the local detection device and the charged object according to the actual voltage of the charged object and the sensed electric field intensity;
judging whether the actual distance is smaller than a safe distance; if yes, the alarm condition is met; if not, the alarm condition is not met.
6. The method for monitoring the safe distance in real time according to claim 5, wherein before the local detection device performs the non-contact sensing of the electric field intensity, the method further comprises:
and setting a safety distance.
7. The method for monitoring the safe distance in real time according to claim 6, further comprising:
and after the distance is within the safe distance, the local warning information and the terminal warning information change along with the actual distance.
8. A safe distance real-time monitoring device is used for executing a safe distance real-time monitoring method and is characterized by comprising a local detection device worn by constructors and a terminal monitoring device monitored by monitoring personnel:
the local detection device includes:
the electric field intensity sensor is used for carrying out non-contact sensing on the electric field intensity;
the local processor is used for judging whether the alarm condition is met or not according to the sensing result;
the local warning device is used for sending local warning information to remind constructors when the warning condition is met;
the terminal monitoring device includes:
and the terminal warning device is used for sending terminal warning information to remind a supervisor.
9. The real-time safe distance monitoring device according to claim 8, wherein the local detection device further comprises:
and the wireless transceiving module is used for sending the judgment result to the terminal monitoring device.
10. The real-time safe distance monitoring device according to claim 8, wherein the terminal monitoring device further comprises a terminal processor configured to:
numbering a plurality of local detection devices and a plurality of indicator lamps respectively;
establishing a one-to-one corresponding relation between a local detection device and an indicator light;
acquiring the number of the local detection device which sends the judgment result;
the control terminal warning device sends out a buzzer sound;
and illuminating an indicator lamp corresponding to the local detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010453697.3A CN111540146A (en) | 2020-05-26 | 2020-05-26 | Safe distance real-time monitoring method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010453697.3A CN111540146A (en) | 2020-05-26 | 2020-05-26 | Safe distance real-time monitoring method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111540146A true CN111540146A (en) | 2020-08-14 |
Family
ID=71976096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010453697.3A Pending CN111540146A (en) | 2020-05-26 | 2020-05-26 | Safe distance real-time monitoring method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111540146A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933456A (en) * | 2021-03-02 | 2021-06-11 | 上海建工集团股份有限公司 | Safety monitoring system and method for construction safety belt attachment state |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004234317A (en) * | 2003-01-30 | 2004-08-19 | Mega Chips Corp | Warning apparatus for pacemaker |
| CN102982636A (en) * | 2012-12-13 | 2013-03-20 | 辽宁省电力有限公司锦州供电公司 | Small animal detection and alarm method for power transformation and distribution facility |
| CN104269023A (en) * | 2014-10-16 | 2015-01-07 | 杭州凯达电力建设有限公司 | Automatic warning device |
| CN204631112U (en) * | 2015-02-05 | 2015-09-09 | 梁佩群 | A kind of wearable electric shock-prevention safety guard system |
| CN105448035A (en) * | 2015-12-28 | 2016-03-30 | 云南电网有限责任公司电力科学研究院 | High-voltage line proximity early warning method and device |
| CN206400736U (en) * | 2016-11-21 | 2017-08-11 | 全球能源互联网研究院 | A kind of wearable device |
| CN208506939U (en) * | 2018-07-17 | 2019-02-15 | 郝祉 | A kind of high voltage site operation machinery closing electricity prevention alarm system |
| CN111009098A (en) * | 2019-11-18 | 2020-04-14 | 广东电网有限责任公司 | Safety distance early warning method and system |
-
2020
- 2020-05-26 CN CN202010453697.3A patent/CN111540146A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004234317A (en) * | 2003-01-30 | 2004-08-19 | Mega Chips Corp | Warning apparatus for pacemaker |
| CN102982636A (en) * | 2012-12-13 | 2013-03-20 | 辽宁省电力有限公司锦州供电公司 | Small animal detection and alarm method for power transformation and distribution facility |
| CN104269023A (en) * | 2014-10-16 | 2015-01-07 | 杭州凯达电力建设有限公司 | Automatic warning device |
| CN204631112U (en) * | 2015-02-05 | 2015-09-09 | 梁佩群 | A kind of wearable electric shock-prevention safety guard system |
| CN105448035A (en) * | 2015-12-28 | 2016-03-30 | 云南电网有限责任公司电力科学研究院 | High-voltage line proximity early warning method and device |
| CN206400736U (en) * | 2016-11-21 | 2017-08-11 | 全球能源互联网研究院 | A kind of wearable device |
| CN208506939U (en) * | 2018-07-17 | 2019-02-15 | 郝祉 | A kind of high voltage site operation machinery closing electricity prevention alarm system |
| CN111009098A (en) * | 2019-11-18 | 2020-04-14 | 广东电网有限责任公司 | Safety distance early warning method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112933456A (en) * | 2021-03-02 | 2021-06-11 | 上海建工集团股份有限公司 | Safety monitoring system and method for construction safety belt attachment state |
| CN112933456B (en) * | 2021-03-02 | 2022-07-01 | 上海建工集团股份有限公司 | Safety monitoring system and method for construction safety belt attachment state |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107240226B (en) | Nearly electric early warning device and system | |
| CN206058455U (en) | A kind of Fire Images Recognition System for possessing three kinds of grade smog identifications | |
| CN104260686A (en) | Bus safety control method and system | |
| CN115050158B (en) | Fire emergency lighting and evacuation indication system | |
| CN104742743A (en) | GSM-based drunk driving monitoring device and method | |
| CN113405219B (en) | Fireproof monitoring method and device for air conditioner, electronic equipment and storage medium | |
| CN205264004U (en) | Nearly electric early warning device of high -voltage line | |
| CN111540146A (en) | Safe distance real-time monitoring method and device | |
| KR20190035274A (en) | Safety equipment wearing encouragement system and method for operating the same | |
| CN206697057U (en) | Portable traffic accident prevention system, vehicle and warning sign | |
| CN210039044U (en) | Personal safety protection device for power distribution network | |
| CN111948960A (en) | Construction site hazard source monitoring system based on Internet of things and use method thereof | |
| CN205114738U (en) | Elevator remote monitoring system | |
| CN111273571A (en) | Equipment running state monitoring method, device and system, storage medium and equipment | |
| CN111179543A (en) | Safe distance monitoring method and safe distance monitoring system | |
| CN204990562U (en) | Electric wire shaft tower early warning device and system | |
| CN207747772U (en) | A kind of power battery dynamic security information sharing and communication alarm device | |
| CN110033594A (en) | Substation safety monitors system and method | |
| CN109859447A (en) | Method, controller and the system of security protection in a kind of construction site | |
| CN213693205U (en) | Battery charging monitoring system | |
| CN109847255B (en) | Movable modular intelligent fire-fighting on-duty guarantee equipment and related products | |
| CN108263310A (en) | A kind of power battery dynamic security information sharing and communication alarm device | |
| CN110554354B (en) | Equipment maintenance quality monitoring method and system and terminal equipment | |
| CN209993064U (en) | Charging detection circuit and charging station | |
| KR20030062030A (en) | Power line detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200814 |