CN107998579A - Fire water-supply and fire-extinguishing apparatus monitoring system - Google Patents
Fire water-supply and fire-extinguishing apparatus monitoring system Download PDFInfo
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- CN107998579A CN107998579A CN201711247685.XA CN201711247685A CN107998579A CN 107998579 A CN107998579 A CN 107998579A CN 201711247685 A CN201711247685 A CN 201711247685A CN 107998579 A CN107998579 A CN 107998579A
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- Prior art keywords
- fire
- sensor
- supply
- water
- monitoring system
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
Abstract
A kind of fire water-supply and fire-extinguishing apparatus monitoring system, belong to fire-fighting equipment technical field, it is characterized in that：Hydraulic gage, flowmeter and temperature sensor are connected by the drive circuit input terminal of sensor interface and sensor, and drive circuit output terminal is connected with main controller input terminal, and wireless communication unit echoes frequency with wireless handheld terminal.Beneficial effect is：1st, end fire water supply of registering one's residence monitors.Such as tap water pipe network pressure, flow monitoring.Its necessity is monitored to be to fill in time when fire cistern, cistern water level are insufficient.2nd, fire cistern, cistern water level monitoring are realized.3rd, the monitoring of fire pump room is realized.4th, realize that fire-fighting outer net is registered one's residence end, ground-based duct, the water of local pipe and monitoring temperature.
Description
Technical field
The invention belongs to fire-fighting equipment technical field.
Background technology
, it is necessary to the detection and management and control of normalization, such as tap water pipe network pressure, flow monitoring, prison in fire fighting water system
Its necessity is surveyed to be to fill in time when fire cistern, cistern water level are insufficient；Fire cistern, cistern water level monitoring, prison
Survey the requirement whether fire-fighting water meets fire consumption；The monitoring of fire pump room, monitors various fire-fighting pump discharge pressures；Fire-fighting
Outer net register one's residence the position such as end, ground-based duct, the water of local pipe and monitoring temperature, fire control well valve, trench pipe network it is freezing or
Frozen block causes the hydraulic pressure insufficient water sources of fire-extinguishing apparatus and influences the normal use of equipment, causes irreversible consequence.At present, all it is
By the artificial circling measurment of special messenger, detection means falls behind, and labor intensity is big, and working environment is severe.
The content of the invention
The purpose of the present invention is：A kind of fire water-supply and fire-extinguishing apparatus monitoring system are provided, it can be realized to fire water system
System all standing monitors automatically.
The technical scheme is that：By hardware circuit design, sensor driving design, wireless telecommunication system design, with
And software algorithm design composition.
Hydraulic gage, flowmeter and temperature sensor are connected by the drive circuit input terminal of sensor interface and sensor,
Drive circuit output terminal is connected with main controller input terminal, and wireless communication unit echoes frequency with wireless handheld terminal.
The communication modes and interface of current/voltage type sensor, directly using the analog-digital converter in main controller（ADC）, i.e.,
The communication modes and interface of current/voltage type sensor, are directly to be connected with the analog-digital converter in main controller.
Impulse form sensor or digital communication RS232/RS485, I2C, SPI carry out the output of numerical value, using at a high speed
Optocoupler is as optoisolator and level translation device, the i.e. sensor of impulse type or digital communication RS232/RS485, I2C, SPI
The output terminal for carrying out numerical value is connected with high speed photo coupling.
1 foot of I2C sensors is connected with supply port VCC-3.3 and GND, and I2C_SCL and I2C_SDA are by connecting on two
The I2C functions port of pull-up resistor and master controller connects, and the corresponding port of sensor is connected to controller SPI port, i.e. I2C is passed
1 foot of sensor is connected with supply port VCC-3.3 and GND, and I2C_SCL and I2C_SDA are by connecting two pull-up resistors and master control
The I2C functions port connection of device processed, the corresponding port of sensor is connected to controller SPI port.
Wireless communication unit uses the wireless communication mode based on Wi-Fi agreements with wireless handheld terminal, and system is initial
It is initially during change and does not show that the wireless access point (ap mode) of connection name (SSD) waits connection, wireless handheld terminal
The connection name and the numbering of password or input equipment of equipment are obtained by scanning device Quick Response Code as wireless site (STA)
Equipment is connected, establishes connection.
The beneficial effects of the invention are as follows：
1st, end fire water supply of registering one's residence monitors.Such as tap water pipe network pressure, flow monitoring.Its necessity is monitored to be to work as fire-fighting
It can be filled in time when pond, cistern water level are insufficient.
2nd, fire cistern, cistern water level monitoring.Water level information is read by the tank gage of improvement and monitors fire-fighting water in real time
Whether the requirement of fire consumption is met.The advantages of this technology, not only ensures the water of fire cistern, water tank, can also be true by data
Fire commander is effectively provided in fact, so as to the fire extinguishing scheme of rational adjacent cells, rational allocation fire-fighting resource.
3rd, the monitoring of fire pump room.Fire pump room is the core for starting fire-extinguishing apparatus when fire occurs.The characteristics of this technology
It is to monitor various fire-fighting pump discharge pressures using distance-transmission pressure gauge, whether the water level using liquid level sensor monitoring sump surpasses
Height, uploads status information in real time.According to fire-fighting work experience for many years, fire pump room often occurs being buried by water logging causing equipment to be damaged
Bad situation.And the characteristics of this technology is exactly come real using tank gage and the tableaux fire-fighting special camera of my company's exploitation
When monitoring catchment Well Water Level whether superelevation, timely processing ensure equipment do not flowed or blow over and cover completely.
4th, fire-fighting outer net is registered one's residence end, ground-based duct, the water of local pipe and monitoring temperature.The invention of this technology is filled up
The blank of outer net detection.China is vast in territory, and the southern and northern temperature difference is very big, the north and extremely frigid zones usually because fire control well valve,
The positions such as trench pipe network are freezing or jelly gambling causes the hydraulic pressure insufficient water sources of fire-extinguishing apparatus and influences the normal use of equipment, cause not
Reversible consequence.The characteristics of this technology is applied is to monitor some positions by the temperature sensor after improvement, water sensor
The temperature and water of pipeline.The automatic start-stop of electric heater unit and in real time uploading operation shape are controlled by the temperature value monitored
State information, to ensure that pipe network is not damaged by frost, current are unobstructed handy.The application of this technology has reached to cold area in north fire-fighting
The real-time monitoring and control of outer net, facilitate inspection and maintenance of the fire watch personnel to fire control well and pipe network, substantially increase
Work efficiency, has ensured the complete handy of facility while reducing working strength.
Brief description of the drawings
Fig. 1 is implementation principle block diagram of the present invention；
Fig. 2 .1 are present system each unit relation block diagrams；
Fig. 2 .2 are hardware circuit design figures of the present invention；
Fig. 2 .3 are power supply hardware circuit diagrams of the present invention；
Fig. 2 .4 are present system power circuit diagrams；
Fig. 2 .5 are inventive sensor interface form block diagrams；
Fig. 2 .6 are current-to-voltage converting circuit figures of the present invention；
Fig. 2 .7 are impulse type sensor circuit figures of the present invention；
Fig. 2 .8 are RS232 types sensor circuit figures of the present invention；
Fig. 2 .9 are I2C types sensor circuit figures of the present invention；
Fig. 2 .10 are ESP8266 internal structures block diagrams of the present invention；
Fig. 2 .11 are ESP8266 application circuits of the present invention；
Fig. 2 .12 are CC3200 modular circuits figures of the present invention；
Fig. 2 .13 are current mode of the present invention, voltage sensor driving block diagram；
Fig. 2 .14 are digital interface type sensor driving figures of the present invention；
Fig. 3 .1 are wireless communication channel Establishing process figures of the present invention.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings：
As shown in the figure, it is that capacitance, R are that resistance, L are inductance coils that U, which is integrated circuit, C,.
The present invention is designed by hardware circuit design, sensor driving design, wireless telecommunication system design and software algorithm
Composition.Wherein each hardware cell has been connected into an entirety by hardware circuit design, and unit can be cooperated, is
The basis of stable, the firm work of whole system.Sensor driving design is the basis that each sensor can work normally, wirelessly
Communication system is interacted by the driving of each sensor with sensor, can fast and accurately obtain the number of each sensor
Value.The design of wireless telecommunication system is the core of whole system, its major function is on the one hand to obtain the numerical value of sensor, separately
Outer one side sets up wireless communication channel, and foundation is used after filtered each sensor values are handled by Encryption Algorithm
The communication channel risen is transmitted on handheld terminal.Relation between whole system unit is as shown in Fig. 2 .1.
1st, hardware circuit design
The hardware design of system includes following components, Power Management Design, sensor interface engineering, main control unit type selecting and
External circuit designs.Shown in below figure 2.2.
(1) Power Management Design
Power supply is the energy source of whole system.The mounting location that can take into account the system during Power Management Design uses electricity
Pond or external power supply two ways, since the various pieces supply voltage difference of system is also needed to by using certain means
Supply voltage is adjusted to suitable state.Watt level that can be according to the actual requirements when actual design power circuit is selected
Select suitable DC-DC chips.Specifically convert as shown in Fig. 2 .3.
Fig. 2 .4 are the power circuit of whole system, and input power passes through resettable fuse F1 and anti-reverse diode D1
And Anti-surging TVS D2 are converted into the system power supply voltage of 24v, then 5V electricity is converted into by LM2576 linear stabilized power supplies
Source is used to power to system other devices, and the conversion and the power conversion of 5v due to 12v power supplys are used with a series of core
Piece, peripheral circuit are not repeated herein without difference substantially.5v power supplys pass through small pressure difference, small package DC-DC chips
AMS1117 changes into 3.3v power supplys, powers to main control unit.
(2) Interface design of sensor
Different sensors has different communication modes and interface, the hydraulic gage just known at present, flowmeter and temperature sensing
Device can as an electrical current, voltage form, impulse form or digital communication RS232/RS485, I2C, SPI carry out the defeated of numerical value
Go out.For different numerical value output forms, will be also attached using different interface modes.Specific interface conversion below figure
It is 2.5 shown.
For the sensor of current mode need that current signal is changed into voltage signal first, voltage signal passes through main controller
Internal analog-digital converter（ADC）It is converted into digital signal.For voltage sensor similarly.For RS232/RS485,
Only need master controller to have corresponding ancillary equipment that communication can be achieved for the sensor of I2C, SPI type, realize the reading of data
Take.
For current/voltage type sensor, if of less demanding to acquisition precision, it can be used directly what is carried inside main controller
Analog-digital converter（ADC）.Voltage sensor can be directly connected on the ADC ports of main controller, if voltage is not in 0-3.3V
In the range of, it amplifier can be used to be adjusted into line level.Then need that current signal is first converted into voltage letter for amperometric sensor
Number then be linked into again on the ADC ports of main controller, specific conversion circuit is as shown in Fig. 2 .6.Sensor passes through connector P9
Circuit is accessed, voltage signal is converted into by amplifier all the way, master controller is passed to by ADC_Channel0, after conversion
It can accurately know the numerical value that respective sensor collects.
The circuit as shown in Fig. 2 .7 can be used for the sensor of impulse type, such as common flowmeter, is made in circuit
By the use of 6N137 high speed photo couplings as optoisolator and level translation device, the pulse of flowmeter output main control is changed into by optocoupler
The pulse signal that device can identify, is linked on the I/O port of controller.Master controller passes through interrupt processing, can obtain certain
The umber of pulse collected in time is so as to calculate flow information.
, it is necessary to be turned using the MAX3232 chips that Maxim produces into line level for the sensor using RS232
Change, TX1 and RX1 is connected to the serial port unit of master controller in Fig. 2 .8, and 13,14 feet of MAX3232 chips, which are connected to, to be needed to operate
Sensor.Serial communication is so can be achieved with, carries out data interaction.For RS485 type sensors, MAX3232 cores
Piece changes SP485 chips into.
For the sensor using I2C, circuit shown in Fig. 2 .9 can be used, VCC-3.3 and GND are sensors
Supply port, I2C_SCL and I2C_SDA are connected by connecting the I2C functions port of two pull-up resistors and master controller, can be real
Data interaction is now completed by I2C.Sensor circuit using SPI types is similar with I2C, and the corresponding port of sensor is connected
To controller SPI port, it is not necessary to pull-up resistor.
(3) master controller type selecting
From the point of view of the development of current wireless telecommunications, short-range wireless telecommunications have many modes, can use bluetooth, Wi-Fi,
The radio-cell of RFID, NFC, ZigBee and various frequency ranges, such as 433M wireless communication units, 2.4G wireless communication units.
The system is required to realize quick connection, establishes reliable and stable communication port, and unwanted when
Connection content can be hidden.By the analysis to above-mentioned wireless communication mode pros and cons, obtain Wi-Fi and be most suitable for the system.
Wi-Fi is that a kind of permission electronic equipment is connected to a WLAN（WLAN）Technology, usually using 2.4G
UHF or 5G SHF ISM radio frequency bands.It is typically to have cryptoguard to be connected to WLAN；But it may also be open, this
Sample allows for any equipment in the range of WLAN to connect.In addition Wi-Fi can externally hide connecting link, only allow
Know that fixed SSD titles are connected with the user of password, this connection mode can make the distinctive connection mode of handheld terminal.Under
While provide two kinds of current Wi-Fi controllers common on the market alternatively, and it is for selection to analyze their respective advantage and disadvantage.
①ESP8266
ESP8266EX is that the highest Wi-Fi chips of integrated level, minimum package dimension are only 5mmx5mm in the industry.ESP8266EX high
Degree is integrated with duplexer, radio frequency balun, power amplifier, low noise amplifier, filter and power management module, it is only necessary to very
Shared PCB space, can be preferably minimized by few peripheral circuit.32 miniature controls of Tensilica L106 built in ESP8266EX
Device (MCU), there is super low-power consumption and 16 RSIC, clock speed to reach as high as 160 MHz.Support real time operating system
(RTOS), at present Wi-Fi protocol stacks only used 20% MIPS, other are used equally for user program and exploitation.Its internal structure is such as
Shown in figure below 2.10.
Shown in ESP8266 typical application circuits below figure 2.11.
②CC3200
CC3200 for Internet of Things (IoT) application is a wireless MCU for being integrated with high-performance ARM Cortex-M4, is borrowed
Help on piece Wi-Fi, internet and sane durable security protocol, it is not necessary to which there is Wi-Fi experiences can be achieved faster to open
Hair.CC3200 subsystems are 80MHz ARM Cortex-M4 kernels comprising a running frequency.This device includes a variety of outer
If including a fast parallel utilizing camera interface, I2S, SD/MMC, UART, SPI, I2C and four-way analog-digital converter
(ADC).Its Wi-Fi network processing system includes 802.11 b/g/n radio frequencies, base band and the MAC with powerful crypto engine,
The quick of 256 bit encryptions, secure internet connection are supported to realize.CC3200 devices support that base station, accessing points and Wi-Fi are direct
Pattern.This device also supports WPA2 people and enterprise security and WPS2.0.Wi-Fi on pieces internet includes embedded
TCP/IP and TLS/SSL storehouses, HTTP server and multiple Internet protocols.
By contrasting the parameter of two main control MCU, it is found that two chip can support the application of the system, but respectively have excellent lack
Point, ESP8266 biggest advantages are price, but its peripheral resources is more perfect not as CC3200, can be only done basic
Function, it is relatively difficult if to realize Function Extension.CC3200 is although higher price, it is with complete development data, outside
If aboundresources, performance is stablized.Can the demand based on system selected as one sees fit.The modular circuit for the CC3200 being intended that is as schemed
It is 2.12 shown.
2nd, sensor driving design
The driving design of sensor is related with the interface of sensor, and driving design is the premise that sensor can work normally.It is main
Control unit obtains different numerical value by calling the driving of different sensors.For current mode and voltage sensor
Driving design is exactly that the voltage and current value of sensor is obtained using the ADC functions of main control unit, by comparing producer's offer
Deck watch obtains the real physical quantity of sensor.Shown in concrete operations below figure 2.13.
Sensor based on digital communication mode RS232/RS485, I2C, SPI is driven than current mode and voltage sensor
Trouble, should meet the timing requirements of digital communication first, and then obtaining sensor according to the default instruction of sensor collects
Numerical value, implement block diagram as shown in Fig. 2 .14.
3rd, wireless telecommunication system designs
The design of wireless telecommunication system is the core of whole system.Wireless communication system is communicated by establishing with wireless handheld terminal
Passage, carry out the data that transmission of monitoring arrives.In addition the working process of data, transmission encryption are also to be completed by wireless telecommunication system.
As shown in Fig. 3 .1
(1) foundation of wireless communication
Wireless communication channel is the basis of data transfer, and the system uses the wireless communication mode based on Wi-Fi agreements, this system
It is initially during initialization and does not show that the wireless access point (ap mode) of connection name (SSD) waits connection, it is hand-held to set
Standby terminal obtains the connection name and password or defeated such as equipment of equipment as wireless site (STA) by scanning device Quick Response Code
Numbering connection equipment, establish connection.After hand held equipment terminal connects the system, the IP of system distribution can be automatically derived
Location, unique address of this address as communication, both sides establish TCP connections by the port numbers (PORT) appointed.With regard to this nothing
Line communication port, which is established, to be completed, and waits data transfer.
(2) data processing is encrypted
The problem of data safety of wireless telecommunications has been a concern, and the system intends the data communications framework using google
Protocol Buffer serialize the data of transmission, even if being trapped, the sequence not encoded also is obtained less than number
According to.
Google Protocol Buffer (abbreviation Protobuf) are the in-company hybrid language data marks of Google
Standard, currently in use at present to have more than 48,162 kinds of message formats define and more than 12,183 .proto files.They
For RPC systems and duration data storage system.
Protocol Buffers are a kind of structural data storage formats of portable and effective, can be used for structural data
Serialization, serializes in other words.It is well suited for doing data storage or RPC data interchange formats.Available for communications protocol, data
The language in the fields such as storage is unrelated, platform is unrelated, expansible serializing structured data formats.Currently provide C++, Java,
The API of tri- kinds of language of Python
Protocol Buffer briefly carry out sequence by way of arranging receiving-transmitting sides encoding and decoding to the agreement of transmission
Change, the data after serializing are transmitted using binary mode, the so not only simple assignment procedure of agreement, but also cause biography
Defeated safety greatly improves.
Claims (5)
1. a kind of fire water-supply and fire-extinguishing apparatus monitoring system, it is characterized in that：Hydraulic gage, flowmeter and temperature sensor pass through biography
The drive circuit input terminal of sensor interface and sensor connects, and drive circuit output terminal is connected with main controller input terminal, channel radio
Unit is interrogated to echo frequency with wireless handheld terminal.
2. a kind of fire water-supply as claimed in claim 1 and fire-extinguishing apparatus monitoring system, it is characterized in that：Current/voltage type senses
The communication modes and interface of device, are directly to be connected with the analog-digital converter in main controller.
3. a kind of fire water-supply as claimed in claim 1 and fire-extinguishing apparatus monitoring system, it is characterized in that：The sensor of impulse type
Or the output terminal of digital communication RS232/RS485, I2C, SPI progress numerical value is connected with high speed photo coupling.
4. a kind of fire water-supply as claimed in claim 1 and fire-extinguishing apparatus monitoring system, it is characterized in that：1 foot of I2C sensors with
Supply port VCC-3.3 is connected with GND, and I2C_SCL and I2C_SDA pass through two pull-up resistors of connection and the I2C of master controller
Function port connects, and the corresponding port of sensor is connected to controller SPI port.
5. a kind of fire water-supply as claimed in claim 1 and fire-extinguishing apparatus monitoring system, it is characterized in that：Wireless communication unit with
Wireless handheld terminal uses the wireless communication mode based on Wi-Fi agreements, and system is initially during initialization and does not show
The wireless access point (ap mode) of connection name (SSD) waits connection, and wireless handheld terminal is as wireless site (STA) by sweeping
The connection name for retouching equipment Quick Response Code acquisition equipment connects equipment with the numbering of password or input equipment, establishes connection.
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| CN201711247685.XA CN107998579A (en) | 2017-12-01 | 2017-12-01 | Fire water-supply and fire-extinguishing apparatus monitoring system |
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| CN201711247685.XA CN107998579A (en) | 2017-12-01 | 2017-12-01 | Fire water-supply and fire-extinguishing apparatus monitoring system |
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ID=62055899
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687783A (en) * | 2018-12-19 | 2019-04-26 | 山东神戎电子股份有限公司 | A kind of half ball machine and its self-locking start and stop method with orientation self-lock ability |
| CN111249661A (en) * | 2020-01-23 | 2020-06-09 | 海南合丰运维科技有限公司 | Hand-held type fire pump state detection device |
| CN114870314A (en) * | 2022-05-06 | 2022-08-09 | 浙江悟连科技有限公司 | Fire extinguisher pressure gauge, fire extinguisher management system and fire extinguisher management method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201727869U (en) * | 2010-07-09 | 2011-02-02 | 苏州市邓尉工业设备安装有限公司 | Firefighting monitoring system |
| CN204447070U (en) * | 2014-12-11 | 2015-07-08 | 杭州前控科技有限公司 | A kind of monitoring system of fire supply system |
| CN104922842A (en) * | 2015-06-15 | 2015-09-23 | 深圳市永兴元科技有限公司 | Method and system for monitoring fire hydrant and fire hydrant |
| WO2016094951A1 (en) * | 2014-12-17 | 2016-06-23 | Skilltech Consulting Services Pty Ltd | Intelligent standpipe |
| CN106297139A (en) * | 2016-08-16 | 2017-01-04 | 西安建筑科技大学 | Wireless building fire hazard monitoring system |
| CN206649584U (en) * | 2017-04-17 | 2017-11-17 | 孙平波 | A kind of electromagnetism lock control system based on WIFI |
| CN207886561U (en) * | 2017-12-01 | 2018-09-21 | 尹小东 | Fire water-supply and fire-extinguishing apparatus monitoring system |
-
2017
- 2017-12-01 CN CN201711247685.XA patent/CN107998579A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201727869U (en) * | 2010-07-09 | 2011-02-02 | 苏州市邓尉工业设备安装有限公司 | Firefighting monitoring system |
| CN204447070U (en) * | 2014-12-11 | 2015-07-08 | 杭州前控科技有限公司 | A kind of monitoring system of fire supply system |
| WO2016094951A1 (en) * | 2014-12-17 | 2016-06-23 | Skilltech Consulting Services Pty Ltd | Intelligent standpipe |
| CN104922842A (en) * | 2015-06-15 | 2015-09-23 | 深圳市永兴元科技有限公司 | Method and system for monitoring fire hydrant and fire hydrant |
| CN106297139A (en) * | 2016-08-16 | 2017-01-04 | 西安建筑科技大学 | Wireless building fire hazard monitoring system |
| CN206649584U (en) * | 2017-04-17 | 2017-11-17 | 孙平波 | A kind of electromagnetism lock control system based on WIFI |
| CN207886561U (en) * | 2017-12-01 | 2018-09-21 | 尹小东 | Fire water-supply and fire-extinguishing apparatus monitoring system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687783A (en) * | 2018-12-19 | 2019-04-26 | 山东神戎电子股份有限公司 | A kind of half ball machine and its self-locking start and stop method with orientation self-lock ability |
| CN111249661A (en) * | 2020-01-23 | 2020-06-09 | 海南合丰运维科技有限公司 | Hand-held type fire pump state detection device |
| CN111249661B (en) * | 2020-01-23 | 2021-11-23 | 海南合丰运维科技有限公司 | Hand-held type fire pump state detection device |
| CN114870314A (en) * | 2022-05-06 | 2022-08-09 | 浙江悟连科技有限公司 | Fire extinguisher pressure gauge, fire extinguisher management system and fire extinguisher management method |
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