CN110596542A - Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method - Google Patents

Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method Download PDF

Info

Publication number
CN110596542A
CN110596542A CN201910727204.8A CN201910727204A CN110596542A CN 110596542 A CN110596542 A CN 110596542A CN 201910727204 A CN201910727204 A CN 201910727204A CN 110596542 A CN110596542 A CN 110596542A
Authority
CN
China
Prior art keywords
power supply
supply line
monitoring
infrared sensor
indoor power
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
Application number
CN201910727204.8A
Other languages
Chinese (zh)
Inventor
邓业林
沈怀念
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tefnut Wuxi Intelligent Technology Co Ltd
Original Assignee
Tefnut Wuxi Intelligent Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tefnut Wuxi Intelligent Technology Co Ltd filed Critical Tefnut Wuxi Intelligent Technology Co Ltd
Priority to CN201910727204.8A priority Critical patent/CN110596542A/en
Publication of CN110596542A publication Critical patent/CN110596542A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00Radiation pyrometry, e.g. infrared or optical thermometry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1218Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/06Electric actuation of the alarm, e.g. using a thermally-operated switch
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/38Services specially adapted for particular environments, situations or purposes for collecting sensor information
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Alarm Systems (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

The invention discloses a non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method. The invention discloses a non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method, which comprises the following steps: the temperature change of the surface of a wall body where an indoor power supply line is positioned is monitored by adopting a non-contact thermal sensing monitoring chip, and the temperature of the power supply line is judged so as to realize effective fireproof early warning of the indoor power supply line; wherein, hot sense monitor chip includes: infrared sensor, power, microprocessor module and wireless transmitting unit infrared sensor is used for the hotness monitoring of front end: the infrared sensor adopts an all-silicon infrared sensor to monitor the heat effect of a power supply circuit of electrical equipment which is easy to generate electric arc on the surface of a wall body. The invention has the beneficial effects that: the thermal sensing monitoring device for the indoor power supply line has the characteristics of real-time acquisition, high precision, low power consumption, easiness in installation and the like.

Description

Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method
Technical Field
The invention relates to the field of indoor fire prevention, in particular to a non-contact intelligent indoor power supply line fire prevention thermal sensing monitoring method.
Background
The fault electric arc can be caused by the loosening of the indoor power supply line joint, the aging or damage of the wire insulating layer and the like. When a fault arc occurs, a high temperature of several thousands of degrees can be generated under the condition of a small current, and the traditional over-current protection device and the traditional leakage protection device can not effectively detect the fault arc and make corresponding protection measures, so that a fire disaster is easily caused. Therefore, how to effectively judge the temperature condition of the indoor power supply line has important significance for building fire prevention.
The current measures adopted for indoor fire prevention mainly include installation of a photoelectric smoke alarm. The photoelectric smoke alarm consists of an infrared luminous tube, an infrared induction tube and a darkroom. The light of the infrared luminotron can not reach the infrared light induction tube under the condition of no smoke, when smoke enters a small darkroom, the smoke particles scatter the light emitted by the infrared luminotron, so that part of the light is received by the infrared induction tube and converted into an electric signal, the electric signal is amplified by the detection circuit, and the alarm enters an alarm state when reaching an alarm point.
The traditional technology has the following technical problems:
the smoke alarm cannot play an effective early warning role in case of overheating and fire striking of an indoor power supply circuit buried in a wall body. Because the power supply line is not exposed, when enough smoke is generated to trigger the smoke alarm, a larger fire source is often in the room, and the effect of timely and even early warning cannot be achieved
Disclosure of Invention
The technical problem to be solved by the invention is to provide a non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method, which adopts a non-contact thermal sensing monitoring chip, and judges the temperature of a power supply line by monitoring the temperature change of the surface of a wall body where an indoor key power supply line is positioned, thereby realizing effective indoor power supply line fireproof early warning.
In order to solve the technical problem, the invention provides a non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method, which comprises the following steps: the temperature change of the surface of a wall body where an indoor power supply line is positioned is monitored by adopting a non-contact thermal sensing monitoring chip, and the temperature of the power supply line is judged so as to realize effective fireproof early warning of the indoor power supply line;
wherein, hot sense monitor chip includes: infrared sensor, power, microprocessor module and wireless transmitting unit infrared sensor is used for the hotness monitoring of front end: the infrared sensor adopts an all-silicon infrared sensor to monitor the heat effect of a power supply circuit of electrical equipment which is easy to generate electric arc on the surface of a wall body; the all-silicon infrared sensor is provided with various corresponding filters in different radiation temperature ranges; the power supply supplies power to the thermal sensing monitoring chip, and the microprocessor module is electrically connected with the infrared sensor and the wireless transmitting unit.
In one embodiment, the infrared sensor employs SMTIR 9902.
In one embodiment, the power supply adopts a CR2032 lithium ion coin cell battery.
In one embodiment, the microprocessor module employs STM32F 205.
In one embodiment, the wireless transmitting unit adopts a LoRa module.
In one embodiment, the thermal sensing monitoring chip further comprises an audible and visual alarm device and a reset device.
A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any of the methods when executing the program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of any of the methods.
A processor for running a program, wherein the program when running performs any of the methods.
The invention has the beneficial effects that:
1. the thermal sensing monitoring device for the indoor power supply line has the characteristics of real-time acquisition, high precision, low power consumption, easiness in installation and the like.
2. The thermal inductance monitoring equipment is in a non-contact type, has small overall dimension, and can carry out effective monitoring only by being adhered near a circuit.
3. In order to achieve high-precision data acquisition, a complex all-silicon infrared sensor is adopted, various corresponding filters are arranged in different radiation temperature ranges, and a temperature sensor is arranged in the all-silicon infrared sensor.
4. All terminal equipment in the thermal sensing monitoring system carries out data transmission in a wireless communication mode, uploads the data to a cloud platform for data analysis and processing, and then sends the data to a handheld terminal or a PC (personal computer) end of a user. The user can conveniently master indoor safety in real time.
Drawings
Fig. 1 is a schematic structural diagram of a thermal monitoring system in the method for monitoring fireproof thermal sensing of the non-contact intelligent indoor power supply line according to the invention.
FIG. 2 is a reference circuit configuration diagram of an infrared sensor SMTIR9902 in the method for monitoring the fireproof thermal sensing of the non-contact intelligent indoor power supply circuit.
Fig. 3 is a schematic configuration diagram of a power management module in the method for monitoring the fireproof thermal inductance of the non-contact intelligent indoor power supply line according to the invention.
FIG. 4 is a schematic diagram of a microprocessor module in the method for monitoring the fireproof thermal inductance of the non-contact intelligent indoor power supply line according to the present invention.
Fig. 5 is a schematic structural diagram of a wireless transmitting unit in the method for monitoring the fireproof thermal inductance of the non-contact intelligent indoor power supply line according to the invention.
FIG. 6 is a schematic structural diagram of an acousto-optic alarm and reset device in the non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method.
Fig. 7 is a schematic structural diagram of a wireless network connection architecture in the non-contact intelligent indoor power supply line fireproof thermal monitoring method of the present invention.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, the overall architecture of the thermal monitoring system is shown as follows: generally comprises 5 large modules, which are divided as follows:
referring to fig. 2, an infrared sensor is used for thermal sensing monitoring of the front end: and monitoring the heat effect of a power supply circuit of electrical equipment which is easy to generate electric arc on the surface of the wall by adopting an all-silicon infrared sensor. The working principle of the all-silicon infrared sensor is as follows: when the sensor works, the black absorption layer absorbs infrared rays and converts the infrared rays into heat, so that the cold end and the hot end have temperature difference, according to the Seebeck effect, voltage difference can be generated between the other two output pins, a determined function relation exists between the voltage difference and the temperature difference, the larger the voltage difference is, the larger the temperature difference is, namely the more infrared radiation is absorbed, the larger the voltage difference is.
In order to meet the requirements for contactless measurement of surface temperature or infrared radiation, complex all-silicon infrared sensors are used, with corresponding filters in different radiation temperature ranges. Sensor type SMTIR9902 contains a temperature sensor for measuring the temperature of the sensor itself. The temperature of the sensor element itself ranges between-40 ℃ and 100 ℃. The sensor used a standard TO-05 package and a 5.5 micron high pass filter. A reference circuit configuration diagram of the infrared sensor smri 9902 is shown in the following figure.
Referring to fig. 3, power management: the power supply adopts a CR2032 lithium ion button battery. The output voltage of the battery remains relatively flat throughout the discharge life until the battery is nearly depleted. The battery is immediately followed by a low forward voltage schottky diode and a bulk capacitor. The voltage stabilizer is converted into a stabilized voltage power supply of +3.3V through capacitance filtering and a TPS61291DRV voltage stabilizer, and a stable power supply is provided for the signal acquisition module, the STM32F205 main control circuit module and the wireless transmitting module. The configuration of the power management module is shown in the following figure:
referring to fig. 4, the microprocessor module selects a high-performance, low-cost and low-power consumption core-M core microcontroller specially designed for embedded application in terms of processor selection. The STM32F205 employed is based on a core operating frequency of up to 120M for a high performance 32-bit reduced instruction set. The series uses high speed embedded memory (flash memory can reach 1 byte, up to 128 bytes of system memory), up to 4 bytes of backup memory, with 3 12 bit ADC modules, 2 universal 32 bit timers. 4 USART interfaces and 2 UART interfaces. The reference configuration circuit is shown in the following figure:
referring to fig. 5, the wireless transmitting unit: in view of power consumption, distance and cost, the data transmission is performed by adopting the LoRa wireless communication method in the scheme. The LoRa module is an embedded wireless data transmission module based on the LoRa spread spectrum technology, and utilizes the LoRa network to provide wireless data transmission function for users. The high-performance industrial chip is adopted to realize the transparent data transmission function; the design of low power consumption, the lowest power consumption is less than 2 uA; the multi-channel I/O is provided, the input and output of digital quantity can be realized, and the functions of analog quantity acquisition pulse counting and the like can be realized. To save space and facilitate installation, a built-in antenna will be used. In order to ensure the reliability and safety of data transmission, the data transmission is carried out by adopting an LoRa private protocol.
Audible and visual alarm and resetting means: in order to respond in time, the sound and light alarm function is added. The switch key and the reset key are added. The reference configuration circuit is shown in fig. 6 below.
An indoor fire protection thermal monitoring system may employ an embodiment of a cloud-end structure, as shown in fig. 7 below. The thermal sensing monitoring terminal system can be adhered to the opposite side of a wall surface corresponding to indoor high-power electrical equipment or key fireproof equipment. The data collected by the thermal sensing monitoring terminal system is sent to terminal systems such as mobile phones of users in a wireless communication mode, and the data can also be linked to a large cloud system for monitoring power supply circuits of all key areas of the whole building.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims (10)

1. A fire-proof thermal inductance monitoring method for a non-contact intelligent indoor power supply line is characterized by comprising the following steps: the temperature change of the surface of a wall body where an indoor power supply line is positioned is monitored by adopting a non-contact thermal sensing monitoring chip, and the temperature of the power supply line is judged so as to realize effective fireproof early warning of the indoor power supply line;
wherein, hot sense monitor chip includes: infrared sensor, power, microprocessor module and wireless transmitting unit infrared sensor is used for the hotness monitoring of front end: the infrared sensor adopts an all-silicon infrared sensor to monitor the heat effect of the power supply circuit on the surface of the wall body; the all-silicon infrared sensor is provided with various corresponding filters in different radiation temperature ranges; the power supply supplies power to the thermal sensing monitoring chip, and the microprocessor module is electrically connected with the infrared sensor and the wireless transmitting unit.
2. The method for monitoring the fireproof thermal sensation of the non-contact intelligent indoor power supply line according to claim 1, wherein the infrared sensor adopts SMTIR 9902.
3. The method for monitoring the fireproof thermal sensation of the non-contact intelligent indoor power supply line according to claim 1, wherein the power supply adopts a CR2032 lithium ion button cell.
4. The method for thermal monitoring of fire protection of the non-contact intelligent indoor power supply line as claimed in claim 1, wherein the microprocessor module adopts STM 32.
5. The method for thermal monitoring of fire protection of the non-contact intelligent indoor power supply line according to claim 1, wherein the wireless transmitting unit adopts a Lora module.
6. The method for monitoring the fireproof thermal sensation of the non-contact intelligent indoor power supply line according to claim 1, wherein the thermal sensation monitoring chip further comprises an audible and visual alarm device and a reset device.
7. The method for monitoring the fireproof thermal sensation of the non-contact intelligent indoor power supply line according to claim 1, wherein the data collected by the thermal sensation monitoring chip is sent to a terminal system such as a mobile phone of a user in a wireless communication mode or is linked to a large cloud system.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1 to 7 are implemented when the program is executed by the processor.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
10. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 7.
CN201910727204.8A 2019-08-07 2019-08-07 Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method Pending CN110596542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910727204.8A CN110596542A (en) 2019-08-07 2019-08-07 Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910727204.8A CN110596542A (en) 2019-08-07 2019-08-07 Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method

Publications (1)

Publication Number Publication Date
CN110596542A true CN110596542A (en) 2019-12-20

Family

ID=68853735

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910727204.8A Pending CN110596542A (en) 2019-08-07 2019-08-07 Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method

Country Status (1)

Country Link
CN (1) CN110596542A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115171316A (en) * 2021-04-02 2022-10-11 福建耀荣能源科技有限公司 Novel non-contact fireproof monitoring method based on power line carrier communication

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103196565A (en) * 2013-04-03 2013-07-10 山东省计算中心 Building indoor energy-saving detection point marking method based on infrared image
CN204140132U (en) * 2014-09-18 2015-02-04 徐州中矿大华洋通信设备有限公司 Colliery downhole equipment spot check instrument
CN204439587U (en) * 2015-03-17 2015-07-01 河北工业大学 For detecting the infreared imaging device of external wall heat bridge and inherent vice feature
CN204741134U (en) * 2015-06-15 2015-11-04 福建闽冠伟业智能科技有限公司 Intelligent security socket of state is inserted in discernment with electrical apparatus plug
CN107421659A (en) * 2017-08-03 2017-12-01 合肥祥国电子商务有限公司 A kind of supply line of office insert row heat production sensing detection analysis system
CN208795277U (en) * 2018-08-16 2019-04-26 北京建筑材料科学研究总院有限公司 A kind of building rock wool belt outer heat preservation system humiture observation system
CN209103478U (en) * 2018-12-08 2019-07-12 湖北创全电气有限公司 Electric wiring safety intelligence monitoring and controlling instrument

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103196565A (en) * 2013-04-03 2013-07-10 山东省计算中心 Building indoor energy-saving detection point marking method based on infrared image
CN204140132U (en) * 2014-09-18 2015-02-04 徐州中矿大华洋通信设备有限公司 Colliery downhole equipment spot check instrument
CN204439587U (en) * 2015-03-17 2015-07-01 河北工业大学 For detecting the infreared imaging device of external wall heat bridge and inherent vice feature
CN204741134U (en) * 2015-06-15 2015-11-04 福建闽冠伟业智能科技有限公司 Intelligent security socket of state is inserted in discernment with electrical apparatus plug
CN107421659A (en) * 2017-08-03 2017-12-01 合肥祥国电子商务有限公司 A kind of supply line of office insert row heat production sensing detection analysis system
CN208795277U (en) * 2018-08-16 2019-04-26 北京建筑材料科学研究总院有限公司 A kind of building rock wool belt outer heat preservation system humiture observation system
CN209103478U (en) * 2018-12-08 2019-07-12 湖北创全电气有限公司 Electric wiring safety intelligence monitoring and controlling instrument

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DOUDINGXH1: "SMTIR9901/02红外传感器", 《豆丁网》 *
张涛: "红外测温在电气防火检测中的应用", 《广东土木与建筑》 *
杨健等: "借助红外热像仪分析电气隐患", 《电气开关》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115171316A (en) * 2021-04-02 2022-10-11 福建耀荣能源科技有限公司 Novel non-contact fireproof monitoring method based on power line carrier communication

Similar Documents

Publication Publication Date Title
CN109142832A (en) Realize the intelligent electric energy meter and its implementation of fault electric arc detecting function
CN207817110U (en) Feeder line fault detection control apparatus
CN201417180Y (en) Temperature and humidity detection alarm
CN110596542A (en) Non-contact intelligent indoor power supply line fireproof thermal sensing monitoring method
CN208459533U (en) Realize the intelligent electric energy meter of fault electric arc detecting function
CN109738834A (en) A kind of detection device of server power supply
CN107204090A (en) A kind of system for monitoring intrusion based on IMAQ and information extraction
CN105973311A (en) Remote forest environment detection system based on temperature and humidity sensor
CN205983724U (en) Multi -functional fire alarm ware
CN204650700U (en) A kind of supervisory system of energy-conserving and environment-protective
CN204043705U (en) A kind of portable warm Humidity Detection equipment
CN109142885A (en) It is a kind of not by the electromagnetic environment monitor device of meteorological effect
CN209821411U (en) Human body infrared detection circuit
CN207601990U (en) A kind of fire detector pedestal
CN207475173U (en) A kind of Intelligent arc-light protection device
CN205138644U (en) Infrared human induction detection circuit of electricity is released to heat
Wu et al. Design of Fire Monitoring System for Communities Based on NRF24L01
CN203812357U (en) Wireless low power consumption smoke and temperature early warning circuit
CN208333678U (en) Temperature measuring device
CN108594709A (en) A kind of sensor data acquisition Transmission system applied in electric power fire protection
CN219978498U (en) Electric leakage detection system applied to fire rescue
CN109286789A (en) Community security defence monitoring system
CN214226088U (en) Multifunctional alarm
CN214474487U (en) Intelligence home systems based on stm32 singlechip
CN115171316A (en) Novel non-contact fireproof monitoring method based on power line carrier communication

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: 20191220