CN114038150A - Electric fire early warning monitoring devices - Google Patents
Electric fire early warning monitoring devices Download PDFInfo
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- CN114038150A CN114038150A CN202111501770.0A CN202111501770A CN114038150A CN 114038150 A CN114038150 A CN 114038150A CN 202111501770 A CN202111501770 A CN 202111501770A CN 114038150 A CN114038150 A CN 114038150A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/06—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines
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- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
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Abstract
The invention discloses an electric fire early warning and monitoring device which comprises an upper cover assembly, a CPU (central processing unit) board, a power supply board, a 4G communication board, a cascade expansion board, a base assembly, a wiring terminal and a plug pin. The invention monitors the voltage, the current and the temperature in real time and comprehensively calculates and evaluates the probability of electrical fire occurrence so as to early warn in advance, reports early warning information to the main server through a mobile network to inform operators to do work deployment in advance, and finally completes the closed-loop control of fire early warning control. The invention can effectively solve the defects that the existing electric fire monitoring device can only sense and alarm when an electric fire occurs and can not predict the possibility of the occurrence of the fire in advance, and finally solves the problem that the electric fire is not early-warned in time.
Description
Technical Field
The invention relates to an electric fire early warning and monitoring device, and belongs to the technical field of power distribution network protection.
Background
In recent years, due to frequent occurrence of fire accidents caused by improper electricity utilization and electrical faults, serious harm is brought to the life and property safety of people, and in order to restrain the probability of electrical fire occurrence, the governments currently organize and develop comprehensive treatment work for electrical fire for three years in the national range, so that the quality of electrical products is obviously improved, the electrical design and construction quality of construction engineering is obviously improved, the electrical use and maintenance safety level of social units is obviously improved, and the national electrical fire accidents are obviously reduced. Electrical fire monitoring devices typically provide a fire warning by monitoring load current and residual current. The electric fire early warning and monitoring device is characterized in that continuous data acquisition and calculation analysis are carried out on main factors of electric fire initiation including wire temperature rise, fault current, electric arc combustion, leakage current and voltage state, multipoint electric line parameters are detected in real time through the wireless communication technology of the Internet of things, electricity utilization potential safety hazards are analyzed, early warning information is immediately sent to power supply enterprises and electricity utilization managers, potential electric fire potential safety hazards are eliminated, and the purpose of 'preventing the fire in the bud' is achieved.
The invention aims to overcome the defects in the prior art, early warning is carried out in advance by monitoring voltage, current and temperature in real time and comprehensively calculating and evaluating the probability of electrical fire, and early warning information can be reported to a main server through a mobile network to inform operators to carry out work deployment in advance, so that closed-loop control of fire early warning control is finally completed. The electric fire monitoring device can effectively solve the defects that the existing electric fire monitoring device can only sense and alarm when an electric fire happens and cannot predict the possibility of the fire in advance, and finally solves the problem that the electric fire is not early-warned in time.
Disclosure of Invention
The present invention aims to provide an electrical fire early warning and monitoring device, which can effectively solve the problems mentioned in the background.
In order to achieve the purpose, the invention provides the following technical scheme:
an electric fire early warning monitoring devices, includes upper cover subassembly, CPU board, power strip, 4G communication board, cascades expansion board, base subassembly, binding post and bolt.
The upper cover assembly is also an upper shell of the device and comprises an indicator light hole, a key hole and a turnover cover. The indicating lamp hole and the key hole are positioned in the middle of the upper cover component, so that the indicating lamp and the keys can be conveniently positioned and installed. The flip cover is positioned on two sides of the upper cover, and two ends of the flip cover are provided with rotating shafts, and the flip cover can be opened or closed. The upper cover component and the base component form a shell of the device, are made of ABS engineering plastics, and are insulating, high-temperature resistant and flame retardant.
The CPU board is composed of a CPU processor, a sampling loop, a memory, a temperature measuring circuit, a 32PIN connector, an LED indicator light and a key, and is electrically connected with the power panel through the 32PIN connector, the CPU processor adopts a cortex 4 embedded processor, and the voltage and current detection precision is improved through the DSP arithmetic unit by adopting the oversampling technology. The temperature measuring circuit adopts a DS12B80 chip to continuously collect the ambient temperature. The sampling loop adopts a single power supply rail to rail operational amplifier to realize the conversion of input level and the access to AD peripherals in the processor after impedance matching. The CPU board is used for collecting signals, calculating, setting and storing relevant quantity values, and uploading data and event records to the background through a serial port and a relevant signal line;
the power panel is provided with an AC-DC converter and a plurality of connectors, the AC-DC converter provides a DC power supply for the whole device, the plurality of connectors are used for connecting electric signals of the CPU board and the base, and the whole device plays a role in starting and stopping for electric connection and mechanical connection;
the communication board comprises a wireless 4G communication module and an SIM card unit, is arranged on the base assembly through double pins, and is communicated with the master station server to realize uploading of data and issuing and executing of commands, particularly, statistical data such as voltage and current collected locally by the device and calculated early warning result events, device operation conditions and other information are sent to the master station server, a power manager is reminded of early intervention through pictures, sound and light and other signals, the manager can issue a control command through the master station server, and after the CPU board receives a tripping command, checks a safety check mechanism, a relay is driven to cut off a user power supply loop, so that the purpose of preventing the trouble in the bud is achieved;
the cascade expansion board comprises an RS485 communication loop capable of automatically converting receiving and transmitting, is arranged on the base assembly through double rows of pins and is used for expanding the monitoring units, one set of device can monitor residents of two households, and the number of monitored households can be expanded through cascade connection;
the base component is also a lower shell of the device, a mutual inductor for collecting signals is arranged in the base and comprises 1 voltage mutual inductor, 1 current mutual inductor and 1 leakage current mutual inductor, a control relay provides a fixed clamping position of a wiring terminal, a 4G communication board and a cascade expansion board are arranged, the base component is an input and output circuit of the device, a user connects alternating voltage in parallel, alternating current is connected in series, and finally power supply control is realized through the opening and closing of the relay;
the wiring terminal consists of ABS plastic and metal screws, is placed on the base assembly through a designed concave-convex clamping position and is fixed by the screws, and is used for switching current and voltage signals of a user and local communication signals;
the latch is located at the bottom of the base assembly for securing the device to a mounting rail in a power distribution box.
Advantageous effects
The invention adopts the communication technology of the Internet of things and the multi-parameter artificial intelligence evaluation algorithm to realize higher prediction precision and higher early warning speed than the traditional electric fire early warning monitoring device. The cable temperature, the ambient temperature, the current and voltage and the electric leakage state can be comprehensively evaluated, the calculation result is uploaded to the master station server through the 4G module, a relevant power utilization manager is informed to make an emergency treatment scheme in advance, the fire hazard is solved before a fire disaster occurs, and the life and property safety of a user is guaranteed. The device has the characteristics of high integration level, simplicity in implementation, convenience in operation and maintenance and the like, and has a good application prospect.
Drawings
Fig. 1 is a schematic structural diagram of an electrical fire early warning and monitoring device according to the present invention. In the figure, 1-a top cover assembly, 2-a CPU board, 3-a power supply board, 4-4G communication boards, 5-a cascade expansion board, 6-a base, 7-a wiring terminal and 8-a plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1, in an embodiment of the present invention, an electrical fire warning and monitoring device includes an upper cover assembly 1, a CPU board 2, a power board 3, a 4G communication board 4, a cascade expansion board 5, a base assembly 6, a connection terminal 7, and a plug 8. The concrete design is as follows:
the upper cover assembly 1 is also an upper shell of the device, and comprises an indicating lamp hole, a key hole and a turnover cover, so that a man-machine operation interface is realized, and the intuitiveness and convenience of operation are emphasized during design.
The indicating lamp hole and the key hole are positioned in the middle of the upper cover component, so that the indicating lamp and the key can be conveniently positioned and installed.
The flip cover is positioned on two sides of the upper cover, and two ends of the flip cover are provided with rotating shafts, and the flip cover can be opened or closed.
The upper cover component 1 and the base 6 component form a shell of the device, are made of ABS engineering plastics, and are insulating, high-temperature resistant and flame retardant.
The CPU board 2 is composed of a CPU processor, a sampling loop, a memory, a temperature measuring circuit, a 32PIN connector, an LED indicator light and a key, collects signals (user voltage, load current, leakage current, ambient temperature and the like) in real time, calculates, sets and stores related quantity values, synthesizes line parameters and environmental parameters through an internal algorithm to give out fire prediction probability, gives an alarm when the calculated value exceeds a preset threshold value, transmits alarm information and related data to a 4G module of a communication board through a serial port and a related signal line, and uploads data and event records to a main station through a wireless signal after coding for analysis, processing and decision-making of main station workers.
The CPU board 2 and the power supply board 3 are electrically connected through a 32PIN connector.
The CPU processor adopts a cortex 4 embedded processor, and the voltage and current detection precision is improved by adopting an oversampling technology through a DSP operation unit. The oversampling technology is a method of averaging after multiple sampling to improve the stability of data and remove the unreliable data with larger deviation.
The temperature measuring circuit adopts a DS12B80 chip to continuously acquire the environmental temperature, software calculates the current temperature by looking up a table to acquire the heating coefficient of the current lead, and the integral of time under different heating coefficients forms the basic data of fire early warning.
The sampling loop adopts a single power supply rail-to-rail operational amplifier to realize the conversion of input level and the access of the input level to an AD peripheral in a processor after impedance matching, the design difficulty of a power supply board can be simplified by a single power supply design scheme, the selection of rail-to-rail characteristics further effectively utilizes all the performances of AD, the precision can be improved, and the cost can be reduced.
The power panel 3 is provided with an AC-DC converter and a plurality of connectors, the AC-DC converter provides a +5V DC power supply for the whole device, the power consumption is averagely controlled within 500mA, and the peak power is less than 2A during wireless transmission. The plurality of connectors are used for connecting the electric signals of the CPU board 2 and the base 6, namely, the remote communication signal of the communication board 4, the local communication signal of the cascade expansion board 5, the alternating current signal on the base 6 and the CPU board are electrically connected, and the functions of starting and stopping in the whole device are achieved;
the communication board 4 comprises a wireless 4G communication module and an SIM card unit, is arranged on the base assembly 6 through double pins, and is communicated with the master station server to realize the uploading of data and the issuing execution of commands, specifically, statistical data such as voltage and current locally acquired by a device obtained by the calculation of a CPU board, and calculated early warning result events, device operation condition and other information are transmitted to the master station server, a power manager is reminded to perform early intervention through pictures, sound and light and other signals, the manager can issue a control command through the master station server, and after the CPU board 2 receives a trip command, checks a safety check mechanism and then drives a relay on a bottom board to cut off a user power supply loop, so as to achieve the purpose of preventing the trouble in the bud;
the cascade expansion board 5 comprises an RS485 communication loop for automatic conversion of receiving and transmitting, is arranged on the base component 6 through double rows of pins and is used for expanding the monitoring unit, one set of device can monitor two residents, and the number of monitored residents can be expanded through cascade connection;
the base assembly 6 is also a lower shell of the device, a mutual inductor for collecting signals is installed in the base and comprises 1 voltage mutual inductor, 1 current mutual inductor and 1 leakage current mutual inductor, a control relay provides a fixed clamping position of a wiring terminal, a 4G communication board 4 and a cascade expansion board 5 are installed and are input and output loops of the device, a user connects alternating voltage in parallel, alternating current is connected in series, and finally power supply control is realized through the opening and closing of the relay;
the wiring terminal consists of ABS plastic and metal screws, is placed on the base component 6 through a designed concave-convex clamping position and is fixed by the screws, and is used for switching current and voltage signals of a user and local communication signals;
the latch is located at the bottom of the base assembly 6 for securing the device to a mounting rail in the electrical box.
The device is installed between the inlet wire of being qualified for the next round of competitions and the resident of every family of electric power company electric energy meter of every family resident, generally be 220V 380V voltage class, resident's live wire (L) of every family, zero line (N) advance 1# (L) of device respectively after coming out from the electric energy meter and advance, 2# (N advances) binding post, pass current transformer and leakage transformer simultaneously through binding post live wire (L), zero line (N) only passes leakage transformer, pass through 3# (L again, 4# (N goes out) binding post inserts in the resident family, gather the current of resident's power consumption, voltage, real-time information such as electric leakage. The real-time information, preset wire parameters and environment temperature parameters are processed by an early warning algorithm to finally form early warning data, a local acousto-optic warning is provided to remind a power consumer to check the line of the power consumer, and the early warning information related to the service system of the main station is sent to a power manager for analysis and decision, then the power manager directly carries out remote control processing or carries out on-site investigation on possible reasons.
In conclusion, the electric fire early warning monitoring device can effectively solve the problem that the traditional electric fire monitoring device can only monitor and cannot early warn, can solve the actual problem of difficult installation caused by a lead multipoint temperature measurement scheme, can greatly improve the accuracy and reliability of fire early warning in a low fault current state in the actual operation process of the device by acquiring and evaluating the ambient temperature and adopting a double-exponential curve inverse time-limit temperature rise algorithm of a heating coefficient and a heat dissipation coefficient, and has good application prospect.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An electric fire early warning monitoring device comprises an upper cover assembly, a CPU board, a power supply board, a 4G communication board, a cascade expansion board, a base assembly, a wiring terminal and a plug pin;
the upper cover component is also an upper shell of the device and comprises an indicating lamp hole, a key hole and a turnover cover, wherein the indicating lamp hole and the key hole are positioned in the middle of the upper cover component, so that the indicating lamp and the key are conveniently positioned and installed;
the CPU board consists of a CPU processor, a sampling loop, a memory, a temperature measuring circuit, a 32PIN connector, an LED indicator light and a key, and is electrically connected with the power panel through the 32PIN connector in sequence;
the power panel is provided with an AC/DC converter and a plurality of connectors, and the connectors are used for connecting the electrical signals of the CPU board and the base;
the communication board comprises a wireless 4G communication module and an SIM card unit and is arranged on the base component through double pins;
the cascade expansion board comprises an RS485 communication loop and is arranged on the base component through double rows of pins;
the base component is a lower shell of the device, and a voltage and current transformer for collecting signals, a relay for control and a fixing clamp position of a wiring terminal are arranged in the base;
the wiring terminal consists of ABS plastic and metal screws, is placed on the base assembly through a designed concave-convex clamping position and is fixed by the screws;
the latch is located at the bottom of the base assembly for securing the device to a mounting rail in the electrical distribution box.
2. An electrical fire warning and monitoring device according to claim 1, wherein the power panel is connected to a power system with a voltage level of 380V.
3. The electrical fire early warning and monitoring device according to claim 1, wherein a cortex 4 embedded processor is adopted as the CPU processor on the CPU board, and the voltage and current detection precision is improved by adopting an oversampling technology through a DSP operation unit.
4. The electrical fire early warning and monitoring device according to claim 1, wherein the temperature measuring circuit continuously collects the ambient temperature by using a DS12B80 chip, and the sampling circuit is connected to an AD peripheral in the processor after the conversion of the input level and the impedance matching are realized by using a single power rail-to-rail operational amplifier.
5. The electric fire early warning and monitoring device according to claim 1, wherein the communication board is a 4G Internet of things module, and data uploading and command issuing execution are realized through communication with the master station server.
6. The electrical fire warning and monitoring device as claimed in claim 1, wherein the cascade expansion board employs an RS485 circuit for automatic switching of transmission and reception for reducing control pin lines with the CPU board.
7. An electrical fire early warning and monitoring device according to claim 1, wherein the base assembly comprises 1 voltage transformer, 1 current transformer and 1 leakage current transformer for collecting user voltage, load current and leakage current respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111501770.0A CN114038150A (en) | 2021-12-09 | 2021-12-09 | Electric fire early warning monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111501770.0A CN114038150A (en) | 2021-12-09 | 2021-12-09 | Electric fire early warning monitoring devices |
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| CN114038150A true CN114038150A (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111501770.0A Withdrawn CN114038150A (en) | 2021-12-09 | 2021-12-09 | Electric fire early warning monitoring devices |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202084134U (en) * | 2011-06-08 | 2011-12-21 | 无锡金桥自动化技术有限公司 | Electrical fire monitor |
| CN204242334U (en) * | 2014-12-18 | 2015-04-01 | 重庆莱格特电气有限公司 | Residual-current electrical fire monitoring sniffer |
| CN106997647A (en) * | 2017-05-31 | 2017-08-01 | 上海蜀昌电气有限公司 | Electrical fire-detector |
| CN107688313A (en) * | 2017-09-27 | 2018-02-13 | 上海焕巍智能科技有限公司 | A kind of opened industrial robot controller |
| CN207516451U (en) * | 2017-10-23 | 2018-06-19 | 山东和远智能科技股份有限公司 | Power remote terminal |
| CN207867654U (en) * | 2018-02-11 | 2018-09-14 | 上海燕赵电子科技有限公司 | A kind of modular electrical fire multifunctional monitoring detector |
| CN209312185U (en) * | 2018-12-12 | 2019-08-27 | 深圳市泰永电气科技有限公司 | A kind of electrical fire monitoring device of accessible cloud platform |
| CN209543526U (en) * | 2019-03-13 | 2019-10-25 | 上海世兆新能源科技有限公司绍兴分公司 | Three-level early warning system is supervised based on 4G network intelligent formula safety utilization of electric power hidden danger |
| US20200342744A1 (en) * | 2019-04-24 | 2020-10-29 | Lindsey Firesense, Llc | Electrical power line mounted fire warning system |
-
2021
- 2021-12-09 CN CN202111501770.0A patent/CN114038150A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202084134U (en) * | 2011-06-08 | 2011-12-21 | 无锡金桥自动化技术有限公司 | Electrical fire monitor |
| CN204242334U (en) * | 2014-12-18 | 2015-04-01 | 重庆莱格特电气有限公司 | Residual-current electrical fire monitoring sniffer |
| CN106997647A (en) * | 2017-05-31 | 2017-08-01 | 上海蜀昌电气有限公司 | Electrical fire-detector |
| CN107688313A (en) * | 2017-09-27 | 2018-02-13 | 上海焕巍智能科技有限公司 | A kind of opened industrial robot controller |
| CN207516451U (en) * | 2017-10-23 | 2018-06-19 | 山东和远智能科技股份有限公司 | Power remote terminal |
| CN207867654U (en) * | 2018-02-11 | 2018-09-14 | 上海燕赵电子科技有限公司 | A kind of modular electrical fire multifunctional monitoring detector |
| CN209312185U (en) * | 2018-12-12 | 2019-08-27 | 深圳市泰永电气科技有限公司 | A kind of electrical fire monitoring device of accessible cloud platform |
| CN209543526U (en) * | 2019-03-13 | 2019-10-25 | 上海世兆新能源科技有限公司绍兴分公司 | Three-level early warning system is supervised based on 4G network intelligent formula safety utilization of electric power hidden danger |
| US20200342744A1 (en) * | 2019-04-24 | 2020-10-29 | Lindsey Firesense, Llc | Electrical power line mounted fire warning system |
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