CN106448039A - Thermosensitive current supply based warehouse monitoring system - Google Patents
Thermosensitive current supply based warehouse monitoring system Download PDFInfo
- Publication number
- CN106448039A CN106448039A CN201611003561.2A CN201611003561A CN106448039A CN 106448039 A CN106448039 A CN 106448039A CN 201611003561 A CN201611003561 A CN 201611003561A CN 106448039 A CN106448039 A CN 106448039A
- Authority
- CN
- China
- Prior art keywords
- module
- warehouse
- parameter
- chip
- resistance
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention provides a thermosensitive current supply based warehouse monitoring system. The system includes a wireless sensor network for monitoring warehouse environment, a cloud data sever, a face identification module, an illegal open monitoring module, a wireless transmission module, an automatic open module, an infrared detection module, an automatic close module, a short-message warning module, a site audible and visual alarm module and a real time monitoring platform. The wireless sensor network includes a gateway node and several sensing nodes distributed everywhere in the warehouse. The sensing nodes include a temperature measurement module, a light intensity measurement module, a smoke transducer and a. interface circuit, wherein the temperature measurement module includes an AD590 thermosensitive current supply. The AD590 thermosensitive current supply includes an AD581 chip, an AD590 chip, a first LM358 dual operational amplifier and the first to fifth resistance. Based on the thermosensitive current supply, the system can detect the inter environment of the warehouse precisely and raise the alarm timely.
Description
Technical field
The present invention relates to warehouse monitoring technical field, particularly a kind of warehouse monitoring system based on temperature sensitive current sources.
Background technology
Develop rapidly with economic, storage scale is increasing, and goods and materials species also gets more and more.Traditional based on people
The warehouse monitoring system led becomes very heavy, not only consumes wealth effort, is also easy to monitoring blind area.Just because of this, species
Various warehouse monitoring device is also arisen at the historic moment.In recent years, because technology of Internet of things is day by day favored by developer, based on thing
The embedded system of networking technology is also therefore filled with fresh " blood " for warehouse monitoring system.
Wireless sensor network is a kind of distributed sensor, and its tip can perceive and check the external world
Sensor.Sensor in wireless sensor network wirelessly communicates, and therefore flexibly, device location can for network settings
The connection of wired or wireless way, being formed by communication to change at any time, can also be carried out with internet
Individual multihop self-organizing network, can be widely used in industry, agricultural, medical treatment and daily life.
In industrial aspect, with expanding economy, the production of goods and materials gets more and more, the requirement to warehouse for each manufacturing enterprise
More and more.Warehouse is higher as a security requirement, the numerous industry of human attendance's demand, has control point quantity many
Many, place dispersion, the complicated problem of site environment, this has become the major obstacle of line service.Wherein chemicals
Warehouse is at a relatively high for the requirement of security and automation.According to the incomplete investigation statisticses of storage association of China, whole nation danger in 2014
Change product storage area reaches 77,310,000 square metres, increased 5 .1% on year-on-year basis, but the chemicals warehouse area with rapid growth
Inharmonic is but highlighting of chemicals warehouse safety issue.Be not good at due to storage environment, operated by personnel's error etc. former
Cause, chemicals warehouse accident on fire from explosion is common in news, such as common during Spring Festival fireworks and firecrackers warehouse blast, 2013
Guangzhou Baiyun District warehouse deflagration accident having, PORT OF TIANJIN " 8 12 " explosion accident of 2015 etc., give people the people life security and
Property safety causes extreme loss, and corporate image and prestige are caused with very big impact.Therefore, it is necessary to a kind of prison of design
To chemicals warehouse, danger that may be present carries out early warning and monitoring to control system.
However, existing chemicals warehouse monitoring system, structure is single, substantially connects the side of each equipment using pipeline
Formula, transmission range is limited, and wiring is loaded down with trivial details, and extensibility is not enough, and transmission means is single, and practical function is bad, and cannot accomplish
The synchronization execution reported to the police and automatically control.Warehouse is storage, the important place of transfer and allotment material, and the storage condition in warehouse is straight
Connect the quality being related to material storing, even can cause loss of material when warehouse environment is severe, produce to enterprise and bring not
Just, existing warehouse environment, the especially detection of humiture, using Hygrothermograph, need personnel's number of degrees it is impossible to intuitively show
Humiture numerical value, and warning cannot be sent in time when humiture parameter is exceeded, if personnel not at the scene, are difficult to recognize
The exceeded situation of humiture parameter, causes loss of material.Some are stacked with inside the bulk storage plant of combustible, and fire prevention is most critical
Action, once have fire suffer from may destroy whole warehouse by fire, cause immeasurable loss.But some object storing are too
The various factors such as will ferment long produces fuel gas, once have Mars or temperature too high it is possible to there is fire, so inspection
The concentration surveying fuel gas is the work of non-the normally off key.
Content of the invention
The technical problem to be solved is to overcome the deficiencies in the prior art and provide and a kind of be based on temperature sensitive current sources
Warehouse monitoring system, the present invention be based on temperature sensitive current sources, can accurately detect the environment in warehouse, and alarm can be sent in time.
The present invention is to solve above-mentioned technical problem to employ the following technical solutions：
According to a kind of warehouse monitoring system based on temperature sensitive current sources proposed by the present invention, including the nothing for monitoring warehouse environment
Line sensor network, high in the clouds data server, face recognition module, illegally open monitoring modular, wireless transport module, automatically open
Open module, infrared detection module, be automatically switched off module, short message alarm module, live sound and light alarm module and real-time monitoring platform；
Described wireless sensor network includes gateway node, is deployed in warehouse several sensing nodes everywhere, and sensing node includes temperature
Degree detection module, light-intensity test module, Smoke Sensor and interface circuit；Wherein,
Described temperature detecting module includes AD590 temperature sensitive current sources, described AD590 temperature sensitive current sources include AD581 chip,
AD590 chip, a LM358 dual operational amplifier and the first to five resistance；Wherein, the power end of AD581 chip and+15V electricity
Pressure connects, and the earth terminal of AD581 chip is connected to ground, and the output end of AD581 chip is connected with one end of first resistor, the first electricity
The other end of resistance is connected with one end of second resistance, and the other end of second resistance is anti-phase with a LM358 dual operational amplifier
Input, one end of 3rd resistor, the hot end of AD590 chip connect respectively, the other end of 3rd resistor and the 4th resistance
One end connect, the other end of the 4th resistance is connected with the output end of a LM358 dual operational amplifier, transports for a LM358 pair
The positive input terminal calculating amplifier is connected with one end of the 5th resistance, and the other end of the 5th resistance is connected to ground, the double fortune of a LM358
The power end calculating amplifier is connected with+15V voltage, and the earth terminal of a LM358 dual operational amplifier is connected with -15V voltage,
The cold end of AD590 chip is connected with -15V voltage；
Temperature detecting module, for exporting the temperature parameter collecting to interface circuit；
Light-intensity test module, for exporting the light intensity collecting parameter to interface circuit；
Smoke Sensor, for exporting the smog collecting parameter to interface circuit；
Interface circuit, for amplifying temperature parameter, light intensity parameter and smog parameter, and it is converted into respectively data signal output
To gateway node；
Gateway node, for exporting data signal to high in the clouds data server；
High in the clouds data server, for exporting and entering the temperature parameter receiving, light intensity parameter, smog parameter to real-time monitoring platform
Row display；When temperature parameter, not within the scope of default temperature or light intensity parameter is not in default range of light intensity or smog parameter
When exceeding default smog threshold value, then output alarm signal is reported to the police to short message alarm module and live sound and light alarm module；
Face recognition module, for carrying out face information matching identification to the personnel of barndoor gate to be entered, when face information symbol
During conjunction, output open signal is to automatically turning on module and infrared detection module；
Automatically turn on module, for opening gate when receiving open signal；
Infrared detection module, for starting when receiving open signal to detect human body infrared information, works as infrared detection module
When detecting less than human body infrared information, output shutdown signal is to being automatically switched off module；
It is automatically switched off module, for closing barndoor gate when receiving shutdown signal；
Illegal unlatching monitoring modular, when being used for monitoring that barndoor gate is illegally opened, output alarm signal is to live acousto-optic report
Alert module is reported to the police, and warning message is sent to real-time monitoring platform by wireless transport module.
As a kind of further prioritization scheme of warehouse monitoring system based on temperature sensitive current sources of the present invention, two biographies
Between sense node, maximum linear distance is 300 meters.
As a kind of further prioritization scheme of warehouse monitoring system based on temperature sensitive current sources of the present invention, wireless biography
Sensor network is star-like or mesh network.
As a kind of further prioritization scheme of warehouse monitoring system based on temperature sensitive current sources of the present invention, wireless biography
Defeated module is the CC2530 chip of TI company.
As a kind of further prioritization scheme of warehouse monitoring system based on temperature sensitive current sources of the present invention, described net
Artis is WiFi or 4G network expansion board.
The present invention adopts above technical scheme compared with prior art, has following technique effect：
（1）The present invention is based on temperature sensitive current sources, can achieve the collection to the environment parameter such as humiture, smog in warehouse, and according to
Analysis result makes respective handling, sends alarm in time；
（2）The present invention can accurately detect the environment in warehouse, using wireless mode, warehouse is monitored, and is capable of reporting
Alert；
（3）Overcome traditional wire warehouse monitoring system wiring trouble, high cost, power consumption is high, extensibility and transplantability difference
Not enough；
（4）The invention provides the real-time monitoring of warehouse environment situation, transmitting and preserve, fast, the full-fledged nothing of Negotiation speed
Gauze network extends transmission range；
（5）The system has that structure is simple, convenient and practical, certainty of measurement is high, good reliability, intellectuality, low-power consumption, quickness and high efficiency
And cheap the advantages of.
Specific embodiment
Below technical scheme is described in further detail：
Those skilled in the art of the present technique it is understood that unless expressly stated, singulative " " used herein, "
Individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that arranging used in the specification of the present invention
Diction " inclusion " refers to there is described feature, integer, step, operation, element and/or assembly, but it is not excluded that existing or adding
Other features one or more, integer, step, operation, element, assembly and/or their group.It should be understood that when we claim unit
Part is " connected " or during " coupled " to another element, and it can be directly connected or coupled to other elements, or can also exist
Intermediary element.Additionally, " connection " used herein or " coupling " can include wirelessly connecting or coupling.Wording used herein
"and/or" includes one or more associated any cell and all combinations of listing item.
Those skilled in the art of the present technique it is understood that unless otherwise defined, all terms used herein（Including skill
Art term and scientific terminology）There is the general understanding identical meaning with the those of ordinary skill in art of the present invention.Also
It should be understood that those terms defined in such as general dictionary should be understood that have with the context of prior art in
The consistent meaning of meaning, and unless defined as here, will not be explained with idealization or excessively formal implication.
A kind of warehouse monitoring system based on temperature sensitive current sources, including the wireless sensor network for monitoring warehouse environment
Network, high in the clouds data server, face recognition module, illegally open monitoring modular, wireless transport module, automatically turn on module, red
Outer detecting module, it is automatically switched off module, short message alarm module, live sound and light alarm module and real-time monitoring platform；Described wireless
Sensor network includes gateway node, is deployed in warehouse several sensing nodes everywhere, and sensing node includes temperature detection mould
Block, light-intensity test module, Smoke Sensor and interface circuit；Wherein,
Described temperature detecting module includes AD590 temperature sensitive current sources, described AD590 temperature sensitive current sources include AD581 chip,
AD590 chip, a LM358 dual operational amplifier and the first to five resistance；Wherein, the power end of AD581 chip and+15V electricity
Pressure connects, and the earth terminal of AD581 chip is connected to ground, and the output end of AD581 chip is connected with one end of first resistor, the first electricity
The other end of resistance is connected with one end of second resistance, and the other end of second resistance is anti-phase with a LM358 dual operational amplifier
Input, one end of 3rd resistor, the hot end of AD590 chip connect respectively, the other end of 3rd resistor and the 4th resistance
One end connect, the other end of the 4th resistance is connected with the output end of a LM358 dual operational amplifier, transports for a LM358 pair
The positive input terminal calculating amplifier is connected with one end of the 5th resistance, and the other end of the 5th resistance is connected to ground, the double fortune of a LM358
The power end calculating amplifier is connected with+15V voltage, and the earth terminal of a LM358 dual operational amplifier is connected with -15V voltage,
The cold end of AD590 chip is connected with -15V voltage；
Temperature detecting module, for exporting the temperature parameter collecting to interface circuit；
Light-intensity test module, for exporting the light intensity collecting parameter to interface circuit；
Smoke Sensor, for exporting the smog collecting parameter to interface circuit；
Interface circuit, for amplifying temperature parameter, light intensity parameter and smog parameter, and it is converted into respectively data signal output
To gateway node；
Gateway node, for exporting data signal to high in the clouds data server；
High in the clouds data server, for exporting and entering the temperature parameter receiving, light intensity parameter, smog parameter to real-time monitoring platform
Row display；When temperature parameter, not within the scope of default temperature or light intensity parameter is not in default range of light intensity or smog parameter
When exceeding default smog threshold value, then output alarm signal is reported to the police to short message alarm module and live sound and light alarm module；
Face recognition module, for carrying out face information matching identification to the personnel of barndoor gate to be entered, when face information symbol
During conjunction, output open signal is to automatically turning on module and infrared detection module；
Automatically turn on module, for opening gate when receiving open signal；
Infrared detection module, for starting when receiving open signal to detect human body infrared information, works as infrared detection module
When detecting less than human body infrared information, output shutdown signal is to being automatically switched off module；
It is automatically switched off module, for closing barndoor gate when receiving shutdown signal；
Illegal unlatching monitoring modular, when being used for monitoring that barndoor gate is illegally opened, output alarm signal is to live acousto-optic report
Alert module is reported to the police, and warning message is sent to real-time monitoring platform by wireless transport module.
Between two sensing nodes, maximum linear distance is 300 meters.
Wireless sensor network is star-like or mesh network.
Wireless transport module is the CC2530 chip of TI company.
Described gateway node is WiFi or 4G network expansion board.
Above content is to further describe it is impossible to assert with reference to specific preferred embodiment is made for the present invention
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, some simple deductions can also be made or substitute, all should be considered as belonging to the present invention's
Protection domain.
Claims (5)
1. a kind of warehouse monitoring system based on temperature sensitive current sources is it is characterised in that include for monitoring the wireless of warehouse environment
Sensor network, high in the clouds data server, face recognition module, illegally open monitoring modular, wireless transport module, automatically turn on
Module, infrared detection module, it is automatically switched off module, short message alarm module, live sound and light alarm module and real-time monitoring platform；Institute
State wireless sensor network to include gateway node, be deployed in warehouse several sensing nodes everywhere, sensing node includes temperature
Detection module, light-intensity test module, Smoke Sensor and interface circuit；Wherein,
Described temperature detecting module includes AD590 temperature sensitive current sources, described AD590 temperature sensitive current sources include AD581 chip,
AD590 chip, a LM358 dual operational amplifier and the first to five resistance；Wherein, the power end of AD581 chip and+15V electricity
Pressure connects, and the earth terminal of AD581 chip is connected to ground, and the output end of AD581 chip is connected with one end of first resistor, the first electricity
The other end of resistance is connected with one end of second resistance, and the other end of second resistance is anti-phase with a LM358 dual operational amplifier
Input, one end of 3rd resistor, the hot end of AD590 chip connect respectively, the other end of 3rd resistor and the 4th resistance
One end connect, the other end of the 4th resistance is connected with the output end of a LM358 dual operational amplifier, transports for a LM358 pair
The positive input terminal calculating amplifier is connected with one end of the 5th resistance, and the other end of the 5th resistance is connected to ground, the double fortune of a LM358
The power end calculating amplifier is connected with+15V voltage, and the earth terminal of a LM358 dual operational amplifier is connected with -15V voltage,
The cold end of AD590 chip is connected with -15V voltage；
Temperature detecting module, for exporting the temperature parameter collecting to interface circuit；
Light-intensity test module, for exporting the light intensity collecting parameter to interface circuit；
Smoke Sensor, for exporting the smog collecting parameter to interface circuit；
Interface circuit, for amplifying temperature parameter, light intensity parameter and smog parameter, and it is converted into respectively data signal output
To gateway node；
Gateway node, for exporting data signal to high in the clouds data server；
High in the clouds data server, for exporting and entering the temperature parameter receiving, light intensity parameter, smog parameter to real-time monitoring platform
Row display；When temperature parameter, not within the scope of default temperature or light intensity parameter is not in default range of light intensity or smog parameter
When exceeding default smog threshold value, then output alarm signal is reported to the police to short message alarm module and live sound and light alarm module；
Face recognition module, for carrying out face information matching identification to the personnel of barndoor gate to be entered, when face information symbol
During conjunction, output open signal is to automatically turning on module and infrared detection module；
Automatically turn on module, for opening gate when receiving open signal；
Infrared detection module, for starting when receiving open signal to detect human body infrared information, works as infrared detection module
When detecting less than human body infrared information, output shutdown signal is to being automatically switched off module；
It is automatically switched off module, for closing barndoor gate when receiving shutdown signal；
Illegal unlatching monitoring modular, when being used for monitoring that barndoor gate is illegally opened, output alarm signal is to live acousto-optic report
Alert module is reported to the police, and warning message is sent to real-time monitoring platform by wireless transport module.
2. a kind of warehouse monitoring system based on temperature sensitive current sources according to claim 1 is it is characterised in that two sense
Between node, maximum linear distance is 300 meters.
3. a kind of warehouse monitoring system based on temperature sensitive current sources according to claim 1 is it is characterised in that wireless sensing
Device network is star-like or mesh network.
4. a kind of warehouse monitoring system based on temperature sensitive current sources according to claim 1 is it is characterised in that be wirelessly transferred
Module is the CC2530 chip of TI company.
5. a kind of warehouse monitoring system based on temperature sensitive current sources according to claim 1 is it is characterised in that described gateway
Node is WiFi or 4G network expansion board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003561.2A CN106448039A (en) | 2016-11-15 | 2016-11-15 | Thermosensitive current supply based warehouse monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003561.2A CN106448039A (en) | 2016-11-15 | 2016-11-15 | Thermosensitive current supply based warehouse monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106448039A true CN106448039A (en) | 2017-02-22 |
Family
ID=58207104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611003561.2A Pending CN106448039A (en) | 2016-11-15 | 2016-11-15 | Thermosensitive current supply based warehouse monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106448039A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147263A (en) * | 2018-09-05 | 2019-01-04 | 广州巨枫科技有限公司 | Warehouse intelligent monitor system based on Internet of Things |
| CN111271853A (en) * | 2019-08-29 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Wireless sensor system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080086154A (en) * | 2007-03-22 | 2008-09-25 | 이시우 | Terminal type of radio multi function sensor |
| CN203444593U (en) * | 2013-08-17 | 2014-02-19 | 天津讯安科技有限公司 | Warehouse antitheft alarm system |
| CN204156808U (en) * | 2014-11-12 | 2015-02-11 | 南京信息工程大学 | A kind of solar power generation supervising device based on wireless telecommunications |
| CN204884110U (en) * | 2015-09-07 | 2015-12-16 | 华锂（天津）机电装备技术有限公司 | Hazardous articles storage process real time monitoring alarm system |
| CN205596153U (en) * | 2016-03-28 | 2016-09-21 | 北京东霖消防科技有限公司 | Harmful gas surveys automatic control system |
-
2016
- 2016-11-15 CN CN201611003561.2A patent/CN106448039A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080086154A (en) * | 2007-03-22 | 2008-09-25 | 이시우 | Terminal type of radio multi function sensor |
| CN203444593U (en) * | 2013-08-17 | 2014-02-19 | 天津讯安科技有限公司 | Warehouse antitheft alarm system |
| CN204156808U (en) * | 2014-11-12 | 2015-02-11 | 南京信息工程大学 | A kind of solar power generation supervising device based on wireless telecommunications |
| CN204884110U (en) * | 2015-09-07 | 2015-12-16 | 华锂（天津）机电装备技术有限公司 | Hazardous articles storage process real time monitoring alarm system |
| CN205596153U (en) * | 2016-03-28 | 2016-09-21 | 北京东霖消防科技有限公司 | Harmful gas surveys automatic control system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109147263A (en) * | 2018-09-05 | 2019-01-04 | 广州巨枫科技有限公司 | Warehouse intelligent monitor system based on Internet of Things |
| CN111271853A (en) * | 2019-08-29 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Wireless sensor system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106504489A (en) | A kind of warehouse monitoring system based on Internet of Things | |
| CN102737468A (en) | System and method for detecting fire hazard based on wireless multi-sensor information fusion | |
| WO2020181851A1 (en) | Zigbee wireless network-based warehouse monitoring system | |
| CN2914207Y (en) | Household securing system | |
| CN102622844A (en) | Wireless energy-saving compound type fire detector | |
| CN108167651B (en) | A kind of gas monitoring device | |
| CN205140166U (en) | Combustible gas multiple spot system of observing and controling based on wireless sensor network | |
| CN201654978U (en) | Wireless fire alarm monitoring system of dry kiln | |
| CN109166269A (en) | Fire early warning device and system based on wireless communication | |
| CN205958033U (en) | Take intelligent environmental monitoring system of temperature detection | |
| CN106448039A (en) | Thermosensitive current supply based warehouse monitoring system | |
| CN202306238U (en) | Tank region oil tank intelligent monitoring device based on Internet of things | |
| CN204044963U (en) | A kind of petrochemical plant safety monitoring based on WSN network and warning system | |
| CN106128057A (en) | A kind of warehouse based on wireless sensor network security intelligent monitor system | |
| CN205121291U (en) | Warehouse remote monitering system based on data acquisition and radio communication technology | |
| CN108564756A (en) | A kind of workshop fire behavior real time monitoring prompting embedded equipment based on LoRa | |
| CN106568481A (en) | Warehouse monitoring system based on signal conditioning | |
| CN205235248U (en) | Intelligent building fire control detection device | |
| CN205373756U (en) | Temperature and humidity sensor | |
| CN116311760A (en) | Civil building fire monitoring and early warning system based on Internet of things | |
| CN106647643A (en) | Home toxic gas monitoring system | |
| CN208335434U (en) | A kind of interconnection type intelligent gas alarm system | |
| CN107622628A (en) | A kind of household safe Monitoring and control system | |
| CN208027525U (en) | A kind of intelligent synchronization laboratory monitoring and alarming system based on WiFi communication | |
| CN205563922U (en) | Multi -functional detection alarm device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
|
| RJ01 | Rejection of invention patent application after publication |