CN110049112A - A kind of fire cistern liquid level detection system and method - Google Patents
A kind of fire cistern liquid level detection system and method Download PDFInfo
- Publication number
- CN110049112A CN110049112A CN201910239557.3A CN201910239557A CN110049112A CN 110049112 A CN110049112 A CN 110049112A CN 201910239557 A CN201910239557 A CN 201910239557A CN 110049112 A CN110049112 A CN 110049112A
- Authority
- CN
- China
- Prior art keywords
- electrically connected
- liquid level
- mcu
- resistance
- chip
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 131
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 80
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 90
- 230000000087 stabilizing effect Effects 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 18
- 239000004973 liquid crystal related substance Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000006641 stabilisation Effects 0.000 claims description 12
- 238000011105 stabilization Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 101000894525 Homo sapiens Transforming growth factor-beta-induced protein ig-h3 Proteins 0.000 description 1
- 102100021398 Transforming growth factor-beta-induced protein ig-h3 Human genes 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 208000028485 lattice corneal dystrophy type I Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to fire-fighting internet of things field, it is proposed a kind of fire cistern liquid level detection system, including liquid level sensor, MCU, communication module, wherein MCU carries out data transmission with liquid level sensor, the output end of MCU and the input terminal of communication module connect, and fire cistern liquid level detection system is powered using external connection battery.The present invention also proposes a kind of fire cistern liquid-level detecting method, using above-mentioned fire cistern liquid level detection system, comprising the following steps: system electrification enters low-power consumption mode after MCU, communication module initialization；MCU timing wake-up and the fire cistern liquid level data that current time is obtained by liquid level sensor are upload the data in Cloud Server if liquid level data is higher than alarming value, and then MCU and communication module enter low-power consumption mode；If it is not, then judging whether the time interval uploaded apart from last time is greater than ten minutes, if then uploading the data in Cloud Server, otherwise MCU and communication module enter low-power consumption mode.
Description
Technical field
The present invention relates to fire-fighting internet of things field, more particularly, to a kind of fire cistern liquid level detection system and
Method.
Background technique
In order to guarantee that fire demand water is enough under emergency case, the need to the fire cistern in fire fighting water system are needed
Water is detected, to avoid since water shortage leads to the fire-fighting work for influencing fire department in fire cistern.Fire water
Pond is generally located on skyscraper, generallys use artificial detection to the water level detecting of fire cistern at present, therefore fire cistern
Water level detecting need of work take a substantial amount of time with the resources such as manpower, and once detection work do not carry out in time, Huo Zhejian
It surveys work to slip, by the security of the lives and property of crisis people.
Summary of the invention
The present invention is to overcome detect etc. at least to the water level of fire cistern in time described in the above-mentioned prior art
A kind of defect provides a kind of fire cistern liquid level detection system.
In order to solve the above technical problems, technical scheme is as follows:
A kind of fire cistern liquid level detection system, including liquid level sensor, for obtain and handle liquid level sensor detection
The MCU of obtained liquid level data, the liquid level data for handling completion are reported to the communication module of Cloud Server, wherein MCU
Carry out data transmission with liquid level sensor, the output end of MCU and the input terminal of communication module connect, and fire cistern level sensing
System is powered using external connection battery.
In the specific use process, after fire cistern liquid level detection system powers on, MCU is initialized, MCU configuration and liquid
After the communication protocol of level sensor, Cloud Server is connected to by communication module, completes starting work；MCU timing wake-up is simultaneously led to
The liquid level data for communicating with liquid level sensor and obtaining current time is crossed, it is pre- that MCU judges whether the liquid level data at current time exceeds
If alarming value, if so, MCU is reported to the liquid level data at current time in Cloud Server by communication module, then into
Enter low-power consumption mode；If it is not, then first judging whether the time interval for reporting liquid level data apart from last time is greater than 10min, if then
MCU enters back into low-power consumption mode after the liquid level data at current time is reported to Cloud Server platform, and otherwise MCU is directly entered low
Power consumption mode.
In the technical program, MCU carries out data transmission with liquid level sensor, make MCU and communication module can integrated installation exist
Building interior darkness position, effectively avoids direct sunlight from leading to system failure；Fire cistern liquid level detection system is by external connection battery
It is powered, can reduce overall cost and reduces overall volume, it is easier for installation；In fire cistern liquid level detection system
MCU and communication module are set as timing wake-up work, and low-power consumption mode is entered when not needing work, whole system is effectively reduced
Power consumption, extend battery；Fire cistern liquid level detection system realizes the real-time measurement of fire cistern liquid level, passes through
The liquid level data that communication module timing will test is reported to Cloud Server, or when liquid level data is lower than preset alarming value
The liquid level data that will test is reported in Cloud Server, and staff can be by transferring the liquid periodically updated in Cloud Server
Position data, realize the real-time detection of fire cistern liquid level condition, avoid the level sensing work without carrying out fire cistern in time
Lead to the security of the lives and property for jeopardizing people.
Preferably, communication module is NB-IoT module communication circuit, and wherein NB-IoT module communication circuit includes NB-IoT
Module chip U3, antenna, SIM card holder and the SIM card being arranged in SIM card holder；NB-IoT module chip U3 passes through antennal interface
J1 is connect with antenna, and NB-IoT module chip U3 is electrically connected by usim card interface with the SIM card being arranged in SIM card holder.This
In preferred embodiment, selects the NB-IoT module communication circuit of low-power consumption as communication module, the outside gimmick data of MCU are effectively reduced
When required consumption communication power consumption.
Preferably, NB-IoT module communication circuit further includes Chip-R R20, R22, R23, wherein NB-IoT module chip
The end USIM_RESET of U3 is electrically connected by Chip-R R20 with the end RST of SIM card, the USIM_ of NB-IoT module chip U3
The end CLK is electrically connected by Chip-R R22 with the end CLK of SIM card, and the end USIM_DATA of NB-IoT module chip U3 passes through patch
Sheet resistance R23 is electrically connected with the end I/O of SIM card.Chip-R R20, R22, R23 in this preferred embodiment is antistatic for improving
Discharge performance.
Preferably, NB-IoT module communication circuit further includes TVS diode U4, patch capacitor C25, C26, C27, wherein pasting
One end of sheet resistance R20, R22, R23 are electrically connected with NB-IoT module chip U3 respectively, and Chip-R R20, R22, R23's is another
End is electrically connected with TVS diode U4 respectively；The other end of Chip-R R20 is electrically connected with one end of patch capacitor C25, patch electricity
Hold the other end ground connection of C25；The other end of Chip-R R22 is electrically connected with one end of patch capacitor C26, patch capacitor C26's
Other end ground connection；The other end of Chip-R R23 is electrically connected with one end of patch capacitor C27, another termination of patch capacitor C27
Ground.Diode in this preferred embodiment uses TVS diode, electrostatic can be effectively performed to NB-IoT module communication circuit and put
Electricity protection；Patch capacitor C25, C26, C27 improve the stability of circuit for being filtered to electric signal.
Preferably, device further includes boot-strap circuit, wake-up circuit and reset circuit；
The boot-strap circuit includes triode Q1, patch capacitor C21, Chip-R R13 and R15, wherein the MCU_ of MCU
The end PWR is electrically connected with one end of resistance R13, and the other end of resistance R13 is electrically connected with the base stage of triode Q1, the collection of triode Q1
Electrode is electrically connected with the end NB_PWR of NB-IoT module chip U3, the emitter ground connection of triode Q1；The other end of resistance R13 with
One end of resistance R15 is electrically connected, the other end ground connection of resistance R15；The end NB_PWR of NB-IoT module chip U3 is with capacitor C21's
One end electrical connection, the other end ground connection of capacitor C21；
The wake-up circuit includes triode Q2, patch capacitor C22, Chip-R R14, R16, R17, R18, wherein MCU
In the end MCU_PWR be electrically connected with one end of resistance R16, the other end of resistance R16 is electrically connected with the base stage of triode Q2, three-level
The emitter of pipe Q2 is electrically connected with the end NB_WAKEUP of NB-IoT module chip U3；The NB_WAKEUP of NB-IoT module chip U3
End is electrically connected with one end of capacitor C22, the other end ground connection of capacitor C22；The emitter of triode Q2 and one end electricity of resistance R18
Connection, the other end ground connection of resistance R18；The other end of resistance R16 is electrically connected with one end of resistance R17, the other end of resistance R17
Ground connection；The collector of triode Q2 is electrically connected with one end of resistance R14, the other end of resistance R14 and the output end of external connection battery
Electrical connection；
The reset circuit includes triode Q3, patch capacitor C24, Chip-R R21, R24, wherein the MCU_ in MCU
The end RST is electrically connected with one end of resistance R21, and the other end of resistance R21 is electrically connected with the base stage of triode Q3, the hair of triode Q3
Emitter grounding；The other end of resistance R21 is electrically connected with one end of resistance R24, the other end ground connection of resistance R24；Triode Q3's
Collector is electrically connected with the end NB_RST of NB-IoT module chip U3, the end NB_RST of NB-IoT module chip U3 and capacitor C24
One end electrical connection, capacitor C24 the other end ground connection.
In this preferred embodiment, when the end MCU_PWR is high level, the end NB_PWR of NB-IoT module chip U3 is led with GND
Logical, when NB_PWR was in the low level duration greater than 1.2 seconds, NB-IoT module chip U3 completes booting work；Work as MCU_
When the end WAKEUP is high level, triode Q2 conducting, the end NB_WAKEUP is high level at this time, when the end NB_WAKEUP is in high electricity
When the flat duration is greater than 1 second, NB-IoT module chip U3 wakes up from low-power consumption mode, into normal operating conditions；When
When the end MCU_RST is high level, the end NB_RST of triode Q3 conducting, NB-IoT module chip U3 is low level, works as NB_RST
In when being greater than 1 second the low level duration, NB-IoT module chip U3 executes reset work at end.
Preferably, communication module is provided with 485 wireline interfaces, and it is serial total by 485 to be used for the MCU when wireless signal is weaker
Line standard carries out data communication to Cloud Server.
Preferably, device further includes power supply stabilization circuit, the input terminal of power supply stabilization circuit and the output end of external connection battery
Electrical connection, the power supply stabilization circuit include low pressure difference linearity voltage stabilizing chip U2, capacitor C3, C4, C5, wherein voltage stabilizing chip U2
Input terminal is electrically connected as the input terminal of power supply stabilization circuit with the output end of external connection battery, the output end of voltage stabilizing chip U2 with
The feeder ear of MCU is electrically connected, and the output end of voltage stabilizing chip U2 is electrically connected with the feeder ear of communication module；The input of voltage stabilizing chip U2
End is electrically connected with one end of capacitor C3, the other end ground connection of capacitor C3；The output end of voltage stabilizing chip U2 and one end electricity of capacitor C4
Connection, the other end ground connection of capacitor C4；The output end of voltage stabilizing chip U2 is electrically connected with one end of capacitor C5, the other end of capacitor C5
Ground connection.It in this preferred embodiment, is acquired and steady pressure treatment, is passed through using the power supply that power supply stabilization circuit exports external connection battery
Low pressure difference linearity voltage stabilizing chip U2 is converted to suitable for voltage used in MCU and communication module, then passes through voltage stabilizing chip U2 two
Patch capacitor C3, C4, the C5 at end are filtered, and finally obtain stable direct current output.
Preferably, liquid level detection device further includes LCD liquid crystal display screen, and the LCD of the LCD liquid crystal display screen and MCU drive
Moved end electrical connection, MCU show current level sensor liquid level data detected by driving LCD liquid crystal display screen.
Preferably, liquid level detection device further includes function button module, and function button module is connect with MCU, function button
Module includes Chip-R R10, R11, R12, patch capacitor C16, C17, C18, touch-switch S2, S3, S4, wherein resistance R10
One end be electrically connected with external connection battery, the other end of resistance R10 is electrically connected with the end KEY1 in MCU；The other end of resistance R10 with
One end of capacitor C16 is electrically connected, the other end ground connection of capacitor C16；The other end of resistance R10 is electrically connected with one end of switch S2,
The other end of switch S2 is grounded；
One end of resistance R11 is electrically connected with external connection battery, and the other end of resistance R11 is electrically connected with the end KEY2 in MCU；Electricity
The other end of resistance R11 is electrically connected with one end of capacitor C17, the other end ground connection of capacitor C17；The other end and switch of resistance R11
One end of S3 is electrically connected, the other end ground connection of switch S3；
One end of resistance R12 is electrically connected with external connection battery, and the other end of resistance R12 is electrically connected with the end KEY3 in MCU；Electricity
The other end of resistance R12 is electrically connected with one end of capacitor C18, the other end ground connection of capacitor C18；The other end and switch of resistance R12
One end of S4 is electrically connected, the other end ground connection of switch S4.
In this preferred embodiment, MCU is judged whether there is by the level height variation of each key circuit in detection key module
Actuation of keys.
The present invention also proposes a kind of fire cistern liquid-level detecting method, using above-mentioned fire cistern liquid level detection system, packet
Include following steps:
S1: fire cistern liquid level detection system powers on, and MCU is initialized and completed to match with the communication protocol of liquid level sensor
It sets, communication module, which is initialized and registered, is connected to Cloud Server, and then MCU and communication module enter low-power consumption mode；
S2:MCU timing wake-up, then sends detection signal to liquid level sensor, and liquid level sensor disappears current time
Anti- pond liquid level data are sent in MCU by IIC communication and carry out processing analysis:
If the fire cistern liquid level data at current time is higher than preset alarming value, MCU controls communication module and wakes up, communication
After the fire cistern liquid level data at current time is reported Cloud Server by module, MCU and communication module enter low-power consumption mode；
If the fire cistern liquid level data at current time is normal, MCU judges to report fire cistern liquid level data apart from last time
Time interval whether be greater than 10min, if so, MCU control communication module wakes up, communication module is by the fire water at current time
After pit level data report Cloud Server, MCU and communication module enter low-power consumption mode；If it is not, then MCU enters low-power consumption mould
Formula.
Compared with prior art, the beneficial effect of technical solution of the present invention is: capableing of the fire-fighting at timing acquisition current time
Pond liquid level data, and upload in Cloud Server, staff is long-range by calling the liquid level data in Cloud Server to realize
Monitoring, effectively avoiding working not in time because of fire cistern water level detecting causes to influence people's safety of life and property；Pass through timing
The design of wake-up system reduces the power consumption of system entirety, effectively extends the service life of battery, and be suitable for various complexity
Use environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fire cistern liquid level detection system of the present embodiment.
Fig. 2 is the pinouts of the MCU of the present embodiment.
Fig. 3 is the circuit diagram of the NB-IoT module communication circuit of the present embodiment.
Fig. 4 is the circuit diagram that the MCU of the present embodiment controls booting, the wake-up, reset of NB-IoT mould group.
Fig. 5 is the circuit diagram of the power supply stabilization circuit of the present embodiment.
Fig. 6 is the fire cistern liquid-level detecting method flow chart of the present embodiment.
Fig. 7 is the LCD liquid crystal display screen and function button module circuit diagram of the present embodiment.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；
In order to better illustrate this embodiment, the certain components of attached drawing have omission, zoom in or out, and do not represent actual product
Size；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.
The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, the structural schematic diagram of the fire cistern liquid level detection system for the present embodiment.
A kind of fire cistern liquid level detection device of the present embodiment includes liquid level sensor 1, MCU2, communication module 3, external
Battery 4, wherein MCU2 carries out data transmission with liquid level sensor 1, and the output end of MCU2 is connect with the input terminal of communication module 3.
MCU2 in the present embodiment uses STM32 super low-power consumption microcontroller chip STM32L053R8T6, is mainly used for obtaining
The liquid level data that liquid level sensor 1 detects is taken and handled, and liquid level data is reported to by cloud service by communication module 3
In device 5.
As shown in Fig. 2, the pinouts of the MCU2 for the present embodiment.
In the present embodiment, MCU2 carries out IIC with liquid level sensor 1 by the port P1 and communicates the acquisition detection of liquid level sensor 1
Liquid level data.
Communication module 3 in the present embodiment is NB-IoT module communication circuit, as shown in figure 3, being the NB- of the present embodiment
The circuit diagram of IoT module communication circuit.
Wherein NB-IoT module communication circuit includes NB-IoT module chip U3, antenna, SIM card holder and setting in SIM card
SIM card on seat, NB-IoT module chip U3 are connect by antennal interface J1 with antenna, and NB-IoT module chip U3 passes through USIM
Card interface is electrically connected with the SIM card being arranged in SIM card holder.
NB-IoT module communication circuit further include Chip-R R20, R22, R23, TVS diode U4, patch capacitor C25,
C26, C27, wherein the end USIM_RESET of NB-IoT module chip U3 is electrically connected with one end of Chip-R R20, Chip-R
The other end of R20 is electrically connected with the end RST of SIM card；The end USIM_CLK of NB-IoT module chip U3 and the one of Chip-R R22
End electrical connection, the other end of Chip-R R22 are electrically connected with the end CLK of SIM card；The USIM_DATA of NB-IoT module chip U3
End is electrically connected with one end of Chip-R R23, and the other end of Chip-R R23 is electrically connected with the end I/O of SIM card；
The other end of Chip-R R20 is electrically connected with the end K3 of TVS diode U4, the other end and TVS of Chip-R R22
The end K5 of diode U4 is electrically connected, and the other end of Chip-R R23 is electrically connected with the end K1 of TVS diode U4；
The other end of Chip-R R20 is electrically connected with one end of patch capacitor C25, the other end ground connection of patch capacitor C25；
The other end of Chip-R R22 is electrically connected with one end of patch capacitor C26, the other end ground connection of patch capacitor C26；Chip-R
The other end of R23 is electrically connected with one end of patch capacitor C27, the other end ground connection of patch capacitor C27.
In the present embodiment, fire cistern liquid level detection device further includes boot-strap circuit, wake-up circuit and reset circuit.Such as figure
It is the circuit diagram of the boot-strap circuit of the present embodiment, wake-up circuit and reset circuit shown in 4.
Wherein, boot-strap circuit includes NPN triode Q1, patch capacitor C21, Chip-R R13 and R15, wherein described
The end MCU_PWR of MCU2 is electrically connected with one end of resistance R13, and the other end of resistance R13 is electrically connected with the base stage of triode Q1, and three
The collector of pole pipe Q1 is electrically connected with the end NB_PWR of NB-IoT module chip U3, the emitter ground connection of triode Q1；Resistance R13
The other end be electrically connected with one end of resistance R15, the end NB_PWR of the other end of resistance R15 ground connection NB-IoT module chip U3 with
One end of capacitor C21 is electrically connected, the other end ground connection of capacitor C21；
Wake-up circuit includes NPN triode Q2, patch capacitor C22, Chip-R R14, R16, R17, R18, wherein described
The end MCU_PWR of MCU2 is electrically connected with one end of resistance R16, and the other end of resistance R16 is electrically connected with the base stage of triode Q2, and three
The emitter of grade pipe Q2 is electrically connected with the end NB_WAKEUP of NB-IoT module chip U3；The NB_ of NB-IoT module chip U3
The end WAKEUP is electrically connected with one end of capacitor C22, the other end ground connection of capacitor C22；The emitter of triode Q2 is with resistance R18's
One end electrical connection, the other end ground connection of resistance R18；The other end of resistance R16 is electrically connected with one end of resistance R17, resistance R17's
Other end ground connection；The collector of triode Q2 is electrically connected with one end of resistance R14, the other end and the external connection battery 4 of resistance R14
Output end electrical connection；
Reset circuit includes NPN triode Q3, patch capacitor C24, Chip-R R21, R24, wherein the MCU_RST of MCU2
End is electrically connected with one end of resistance R21, and the other end of resistance R21 is electrically connected with the base stage of triode Q3, the transmitting of triode Q3
Pole ground connection；The other end of resistance R21 is electrically connected with one end of resistance R24, the other end ground connection of resistance R24；The collection of triode Q3
Electrode is electrically connected with the end NB_RST of NB-IoT module chip U3, and the end NB_RST of NB-IoT module chip U3 is with capacitor C24's
One end electrical connection, the other end ground connection of capacitor C24.
When the end MCU_PWR is high level, the end NB_PWR of NB-IoT module chip U3 is connected with GND, at NB_PWR
It is greater than 1.2 seconds in the low level duration, NB-IoT module chip U3 completes booting work；When the end MCU_WAKEUP is high electricity
Usually, triode Q2 is connected, and the end NB_WAKEUP is high level at this time, big when the duration that the end NB_WAKEUP is in high level
When 1 second, NB-IoT module chip U3 wakes up from low-power consumption mode, into normal operating conditions；When the end MCU_RST is high electricity
Usually, triode Q3 is connected, and the end NB_RST of NB-IoT module chip U3 is low level, holds when the end NB_RST is in low level
When the continuous time is greater than 1 second, NB-IoT module chip U3, which is executed, resets work.
In the present embodiment, communication module 3 is additionally provided with 485 wireline interfaces, for when wireless signal is weaker MCU2 pass through
485 serial bus standards carry out data communication to Cloud Server 5.
In the present embodiment, fire cistern liquid level detection device device further includes power supply stabilization circuit, as shown in figure 5, for this
The circuit diagram of the power supply stabilization circuit of embodiment.
Power supply stabilization circuit in the present embodiment includes low pressure difference linearity voltage stabilizing chip U2, capacitor C3, C4, C5, wherein surely
The input terminal of pressure chip U2 is electrically connected as the input terminal of power supply stabilization circuit with the output end of external connection battery, voltage stabilizing chip U2's
Output end is electrically connected with the feeder ear of MCU2, and the feeder ear of the output end and NB-IoT module chip U3 of voltage stabilizing chip U2 is electrically connected
It connects；The input terminal of voltage stabilizing chip U2 is electrically connected with one end of capacitor C3, the other end ground connection of capacitor C3；The output of voltage stabilizing chip U2
End is electrically connected with one end of capacitor C4, the other end ground connection of capacitor C4；The output end of voltage stabilizing chip U2 and one end electricity of capacitor C5
Connection, the other end ground connection of capacitor C5.
Chip model used by low pressure difference linearity voltage stabilizing chip U2 in the present embodiment is XC6206P302MR.
The voltage of external connection battery 4 in the present embodiment is 3.6V.
In the specific implementation process, first fire water pit level detection system is powered on, MCU2 initialization, MCU2 configuration and liquid
The IIC communication protocol of level sensor 1, MCU2 establish connection by NB-IoT module communication circuit and Cloud Server 5, that is, complete to disappear
Anti- pond liquid level detection system starts work；It wakes up within MCU2 every 10 seconds and by communicate with liquid level sensor 1, acquisition current time
The liquid level data of fire cistern, MCU2 judge whether the liquid level data of current time fire cistern exceeds preset alarming value, if
It is that then MCU2 is reported to the liquid level data of current time fire cistern in Cloud Server 5 by NB-IoT module communication circuit,
Subsequently into low-power consumption mode；If it is not, then first judge whether the time interval that liquid level data was reported apart from last time is greater than 10min,
If so, MCU2 enters back into low-power consumption mode after the liquid level data of current time fire cistern is reported to 5 platform of Cloud Server,
Otherwise MCU2 is directly entered low-power consumption mode.
The fire cistern liquid level detection system of the present embodiment realizes the real-time measurement of fire cistern liquid level, will test to obtain
Liquid level data timing be reported to Cloud Server 5, or the liquid level that will test when liquid level data is lower than preset alarming value
Data are reported in Cloud Server 5, and staff can be by transferring the liquid level data periodically updated in Cloud Server 5, and realization disappears
The real-time detection of anti-pond liquid level situation, to avoid because causing to jeopardize without the level sensing work for carrying out fire cistern in time
The security of the lives and property of people.
The present embodiment further relates to a kind of fire cistern liquid-level detecting method, using above-mentioned fire cistern liquid level detection system.
As shown in fig. 6, being the flow chart of the present embodiment fire cistern liquid-level detecting method.
The fire cistern liquid-level detecting method of the present embodiment the following steps are included:
S1: fire cistern liquid level detection system powers on, and MCU2 is initialized and completed the IIC communication protocols with liquid level sensor 1
View configuration, communication module 3, which is initialized and registered, is connected to Cloud Server 5, and then MCU2 and communication module 3 enter low-power consumption mould
Formula；
Then S2:MCU2 timing wake-up sends detection signal to liquid level sensor 1, liquid level sensor 1 is by current time
Fire cistern liquid level data is sent in MCU2 by IIC communication and carries out processing analysis:
If the fire cistern liquid level data at current time is higher than preset alarming value, MCU2 controls communication module 3 and wakes up, and leads to
After the fire cistern liquid level data at current time is reported Cloud Server 5 by letter module 3, MCU2 and communication module 3 enter low-power consumption
Mode；
If the fire cistern liquid level data at current time is normal, MCU2 judges to report fire cistern liquid level data apart from last time
Time interval whether be greater than 10min, if so, MCU2 control communication module 3 wakes up, communication module 3 disappears current time
After anti-pond liquid level data report Cloud Server 5, MCU2 and communication module 3 enter low-power consumption mode；If it is not, then MCU2 enter it is low
Power consumption mode.
In the present embodiment, using the STM32L053R8T6 microcontroller chip of low-power consumption as MCU2, and called out using timing
Awake standby mode works, while liquid level sensor 1 only needs to spend Millisecond other time that can obtain in the operational mode
The liquid level data of the fire cistern at current time is taken, and all modules in system reenter low-power consumption mould after completing work
Formula waits timing wake-up next time, so that the power consumption of entire circuit system be effectively reduced, can provide using external connection battery entire
The electricity consumption of system, while can effectively extend the service life of battery.
The present embodiment also uses NB-IoT module communication circuit as the communication module of the present embodiment, therefore liquid level sensor
Firmware updating program is not needed, it is only necessary to which the Internet of Things network interface card for replacing operator can intervene the service network of corresponding operator, i.e.,
The liquid level data for the fire cistern that can be will acquire is sent to unified IoT platform, then is pushed in Cloud Server 5 by IoT platform,
It efficiently solves the problems, such as that construction field signal is poor, and can in time upload to the liquid level data of fire cistern in Cloud Server 5
It is monitored for staff, effectively preventing working not in time because of fire cistern water level detecting leads to influence people's life and property peace
Entirely.
Embodiment 2
A kind of fire cistern liquid level detection system of the present embodiment is additionally arranged LCD liquid crystal display on the basis of embodiment 1
Screen, wherein the LCD driving end of the input terminal with MCU2 of LCD liquid crystal display screen is electrically connected.
The function button module that the present embodiment is added is electrically connected with the end KEY1, KEY2, KEY3 of MCU2.
As shown in fig. 7, being the LCD liquid crystal display screen and function button module circuit diagram of the present embodiment.
LCD liquid crystal display screen in the present embodiment uses the LCD liquid crystal display of 13 sections of 4COM, since the present embodiment uses
STM32L053R8T6 carries LCD driving function as MCU2, the inside STM32L053R8T6, i.e. MCU2 can be connected by the end LCD1
Drive LCD liquid crystal display screen.
Function button module in the present embodiment includes Chip-R R10, R11, R12, patch capacitor C16, C17, C18,
Touch-switch S2, S3, S4, wherein one end of resistance R10 is electrically connected with external connection battery 4, in the other end and MCU2 of resistance R10
The electrical connection of the end KEY1；The other end of resistance R10 is electrically connected with one end of capacitor C16, the other end ground connection of capacitor C16；Resistance R10
The other end be electrically connected with one end of switch S2, the other end of switch S2 ground connection；
One end of resistance R11 is electrically connected with external connection battery 4, and the other end of resistance R11 is electrically connected with the end KEY2 in MCU2；
The other end of resistance R11 is electrically connected with one end of capacitor C17, the other end ground connection of capacitor C17；The other end of resistance R11 with open
Close one end electrical connection of S3, the other end ground connection of switch S3；
One end of resistance R12 is electrically connected with external connection battery 4, and the other end of resistance R12 is electrically connected with the end KEY3 in MCU2；
The other end of resistance R12 is electrically connected with one end of capacitor C18, the other end ground connection of capacitor C18；The other end of resistance R12 with open
Close one end electrical connection of S4, the other end ground connection of switch S4.
In the specific implementation process, touch-switch S2, S3, S4 is defaulted as the state of bouncing, at this time the end KEY1, KEY2, KEY3
For high level, when touch-switch S2, S3, S4 are closed, i.e., key is pressed, and the corresponding end KEY1, KEY2, KEY3 is electric from height at this time
Flat turn is changed to low level, and MCU2 is by the height variation of the detection end KEY1, KEY2, KEY3 level to determine whether there is key dynamic
Make.Assuming that switch S2 presses key pressing, the end KEY1 is converted to low level from high level at this time, and MCU2 detects the level hair at the end KEY1
Variation has been given birth to, has judged that there is actuation of keys at the end KEY1.
MCU2 timing wake-up, MCU2 are obtained the fire cistern liquid level data at current time by liquid level sensor 1, then led to
The fire cistern liquid level data at current time is carried out real-time display by LCD liquid crystal display screen of overdriving, and when no external key is grasped
When making, LCD liquid crystal display screen remains closed state.
The MCU2 of the present embodiment is used cooperatively with the LCD liquid crystal display screen and function button module added, when there is key
The liquid level data of LCD liquid crystal display screen starting and display button operation content and the last fire cistern obtained when operation.
The same or similar label correspond to the same or similar components；
The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent；
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of fire cistern liquid level detection system, it is characterised in that: passed including liquid level sensor, for obtaining and handling liquid level
The MCU for the liquid level data that sensor detects, the communication module for the liquid level data for completing processing to be reported to Cloud Server,
Wherein the MCU carries out data transmission with liquid level sensor, and the output end of the MCU and the input terminal of communication module connect, institute
Fire cistern liquid level detection system is stated to be powered using external connection battery.
2. fire cistern liquid level detection system according to claim 1, it is characterised in that: the communication module is NB-IoT
Module communication circuit, wherein the NB-IoT module communication circuit includes NB-IoT module chip U3, antenna, SIM card holder and sets
Set the SIM card in SIM card holder；The NB-IoT module chip U3 is connect by antennal interface J1 with antenna, the NB-IoT
Module chip U3 is electrically connected by usim card interface with the SIM card being arranged in SIM card holder.
3. fire cistern liquid level detection system according to claim 2, it is characterised in that: the NB-IoT mould group communication electricity
Road further includes Chip-R R20, R22, R23, and wherein the end USIM_RESET of NB-IoT module chip U3 passes through Chip-R R20
It is electrically connected with the end RST of SIM card, the end USIM_CLK of the NB-IoT module chip U3 passes through Chip-R R22 and SIM card
The end USIM_DATA of the electrical connection of the end CLK, the NB-IoT module chip U3 passes through the end I/O of Chip-R R23 and SIM card electricity
Connection.
4. fire cistern liquid level detection system according to claim 3, it is characterised in that: the NB-IoT mould group communication electricity
Road further includes TVS diode U4, patch capacitor C25, C26, C27, one end of described Chip-R R20, R22, R23 respectively with
NB-IoT module chip U3 electrical connection, the other end of Chip-R R20, R22, R23 are electrically connected with TVS diode U4 respectively；Institute
The other end for stating Chip-R R20 is electrically connected with one end of patch capacitor C25, the other end ground connection of patch capacitor C25；The patch
The other end of sheet resistance R22 is electrically connected with one end of patch capacitor C26, the other end ground connection of patch capacitor C26；The patch electricity
The other end of resistance R23 is electrically connected with one end of patch capacitor C27, the other end ground connection of patch capacitor C27.
5. fire cistern liquid level detection system according to claim 2, it is characterised in that: the system also includes booting electricity
Road, wake-up circuit and reset circuit；
The boot-strap circuit includes triode Q1, patch capacitor C21, Chip-R R13 and R15, wherein the MCU_ of the MCU
The end PWR is electrically connected with one end of resistance R13, and the other end of resistance R13 is electrically connected with the base stage of triode Q1, the collection of triode Q1
Electrode is electrically connected with the end NB_PWR of NB-IoT module chip U3, the emitter ground connection of triode Q1；The resistance R13's is another
End is electrically connected with one end of resistance R15, the other end ground connection of resistance R15；The end NB_PWR of the NB-IoT module chip U3 with
One end of capacitor C21 is electrically connected, the other end ground connection of capacitor C21；
The wake-up circuit includes triode Q2, patch capacitor C22, Chip-R R14, R16, R17, R18, wherein the MCU
The end MCU_PWR be electrically connected with one end of resistance R16, the other end of resistance R16 is electrically connected with the base stage of triode Q2, triode
The emitter of Q2 is electrically connected with the end NB_WAKEUP of NB-IoT module chip U3；The NB_ of the NB-IoT module chip U3
The end WAKEUP is electrically connected with one end of capacitor C22, the other end ground connection of capacitor C22；The emitter and resistance of the triode Q2
One end of R18 is electrically connected, the other end ground connection of resistance R18；The other end of the resistance R16 is electrically connected with one end of resistance R17,
The other end of resistance R17 is grounded；The collector of the triode Q2 is electrically connected with one end of resistance R14, the other end of resistance R14
It is electrically connected with the output end of external connection battery；
The reset circuit includes triode Q3, patch capacitor C24, Chip-R R21, R24, wherein the MCU_RST of the MCU
End is electrically connected with one end of resistance R21, and the other end of resistance R21 is electrically connected with the base stage of triode Q3, the transmitting of triode Q3
Pole ground connection；The other end of resistance R21 is electrically connected with one end of resistance R24, the other end ground connection of resistance R24；The collection of triode Q3
Electrode is electrically connected with the end NB_RST of NB-IoT module chip U3, and the end NB_RST of NB-IoT module chip U3 is with capacitor C24's
One end electrical connection, the other end ground connection of capacitor C24.
6. fire cistern liquid level detection system according to claim 1, it is characterised in that: the communication module is provided with
485 wireline interfaces are used for the MCU when wireless signal is weaker and pass through 485 serial bus standards to Cloud Server progress data communication.
7. described in any item fire cistern liquid level detection systems according to claim 1~6, it is characterised in that: the system is also
Including power supply stabilization circuit, the input terminal of the power supply stabilization circuit is electrically connected with the output end of external connection battery；The power supply is steady
Volt circuit includes low pressure difference linearity voltage stabilizing chip U2, capacitor C3, C4, C5, wherein the input terminal of the voltage stabilizing chip U2 is as electricity
The input terminal of source voltage regulator circuit is electrically connected with the output end of external connection battery, the power supply of the output end and MCU of the voltage stabilizing chip U2
End electrical connection, the output end of the voltage stabilizing chip U2 are electrically connected with the feeder ear of communication module；The input of the voltage stabilizing chip U2
End is electrically connected with one end of capacitor C3, the other end ground connection of capacitor C3；The output end of the voltage stabilizing chip U2 and the one of capacitor C4
End electrical connection, the other end ground connection of capacitor C4；The output end of the voltage stabilizing chip U2 is electrically connected with one end of capacitor C5, capacitor C5
The other end ground connection.
8. fire cistern liquid level detection system according to claim 7, it is characterised in that: the system also includes LCD liquid
Crystal display screen, the LCD liquid crystal display screen are electrically connected with the LCD of MCU driving end.
9. fire cistern liquid level detection system according to claim 7, it is characterised in that: the system also includes functions to press
Key module, the function button module are electrically connected with MCU, and the function button module includes Chip-R R10, R11, R12, patch
Chip capacitor C16, C17, C18, touch-switch S2, S3, S4, wherein one end of the resistance R10 is electrically connected with external connection battery, resistance
The other end of R10 is electrically connected with the end KEY1 in MCU；The other end of the resistance R10 is electrically connected with one end of capacitor C16, electricity
Hold the other end ground connection of C16；The other end of the resistance R10 is electrically connected with one end of switch S2, the other end ground connection of switch S2；
One end of the resistance R11 is electrically connected with external connection battery, and the other end of resistance R11 is electrically connected with the end KEY2 in MCU；Institute
The other end for stating resistance R11 is electrically connected with one end of capacitor C17, the other end ground connection of capacitor C17；The resistance R11's is another
End is electrically connected with one end of switch S3, the other end ground connection of switch S3；
One end of the resistance R12 is electrically connected with external connection battery, and the other end of resistance R12 is electrically connected with the end KEY3 in MCU；Institute
The other end for stating resistance R12 is electrically connected with one end of capacitor C18, the other end ground connection of capacitor C18；The resistance R12's is another
End is electrically connected with one end of switch S4, the other end ground connection of switch S4.
10. a kind of fire cistern liquid-level detecting method, which comprises the following steps:
S1: fire cistern liquid level detection system powers on, and MCU is initialized and completed to configure with the communication protocol of liquid level sensor, leads to
Believe module initialization and register and be connected to Cloud Server, then MCU and communication module enter low-power consumption mode；
Then S2:MCU timing wake-up sends detection signal to liquid level sensor, liquid level sensor is by the fire water at current time
Pit level data are sent in MCU by IIC communication and carry out processing analysis: if the fire cistern liquid level data at current time is higher than
Preset alarming value, MCU control communication module and wake up, and the fire cistern liquid level data at current time is reported cloud to take by communication module
It is engaged in after device, MCU and communication module enter low-power consumption mode；If the fire cistern liquid level data at current time is normal, MCU judge away from
Reported whether the time interval of fire cistern liquid level data is greater than 10min from last time, if so, MCU control communication module wakes up,
After the fire cistern liquid level data at current time is reported Cloud Server by communication module, MCU and communication module enter low-power consumption mould
Formula；If it is not, then MCU enters low-power consumption mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239557.3A CN110049112A (en) | 2019-03-27 | 2019-03-27 | A kind of fire cistern liquid level detection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239557.3A CN110049112A (en) | 2019-03-27 | 2019-03-27 | A kind of fire cistern liquid level detection system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110049112A true CN110049112A (en) | 2019-07-23 |
Family
ID=67275386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910239557.3A Pending CN110049112A (en) | 2019-03-27 | 2019-03-27 | A kind of fire cistern liquid level detection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110049112A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130317659A1 (en) * | 2011-09-06 | 2013-11-28 | Stevens Water Monitoring Systems, Inc. | Distributed low-power wireless monitoring |
| CN105334842A (en) * | 2015-09-30 | 2016-02-17 | 苏州富米信息技术有限公司 | Cloud of things online monitoring general platform system |
| US20170003736A1 (en) * | 2015-06-30 | 2017-01-05 | Google Inc. | Systems and methods for efficiently communicating between low-power devices |
| CN206281554U (en) * | 2016-12-24 | 2017-06-27 | 宁夏电通物联网科技股份有限公司 | Fire cistern liquid level gathers active radio sensing device |
| CN107422677A (en) * | 2017-09-11 | 2017-12-01 | 杭州钛比科技有限公司 | A kind of direct water dispenser control system based on NB IoT |
| CN108682137A (en) * | 2018-06-04 | 2018-10-19 | 杨凌天海智慧水电科技有限公司 | Water resource remote supervision system based on NB-IoT |
| CN208043110U (en) * | 2018-02-02 | 2018-11-02 | 长春欣程科技有限公司 | Fire protection sensor data acquisition device based on NB-IoT |
| CN209731295U (en) * | 2019-03-27 | 2019-12-03 | 广州优优加智能科技有限公司 | A kind of fire cistern liquid level detection device |
-
2019
- 2019-03-27 CN CN201910239557.3A patent/CN110049112A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130317659A1 (en) * | 2011-09-06 | 2013-11-28 | Stevens Water Monitoring Systems, Inc. | Distributed low-power wireless monitoring |
| US20170003736A1 (en) * | 2015-06-30 | 2017-01-05 | Google Inc. | Systems and methods for efficiently communicating between low-power devices |
| CN105334842A (en) * | 2015-09-30 | 2016-02-17 | 苏州富米信息技术有限公司 | Cloud of things online monitoring general platform system |
| CN206281554U (en) * | 2016-12-24 | 2017-06-27 | 宁夏电通物联网科技股份有限公司 | Fire cistern liquid level gathers active radio sensing device |
| CN107422677A (en) * | 2017-09-11 | 2017-12-01 | 杭州钛比科技有限公司 | A kind of direct water dispenser control system based on NB IoT |
| CN208043110U (en) * | 2018-02-02 | 2018-11-02 | 长春欣程科技有限公司 | Fire protection sensor data acquisition device based on NB-IoT |
| CN108682137A (en) * | 2018-06-04 | 2018-10-19 | 杨凌天海智慧水电科技有限公司 | Water resource remote supervision system based on NB-IoT |
| CN209731295U (en) * | 2019-03-27 | 2019-12-03 | 广州优优加智能科技有限公司 | A kind of fire cistern liquid level detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213243599U (en) | BMS low-power consumption dormancy power supply control and awakening circuit | |
| CN206818848U (en) | A kind of solar storage battery remote online monitoring device of radio network technique | |
| CN206740889U (en) | Electrical equipment supportability tester | |
| CN109377732A (en) | Water logging detector based on WiFi scheme | |
| CN201417180Y (en) | Temperature and humidity detection alarm | |
| CN203861830U (en) | Wireless pressure alarm system for fire extinction steel cylinder | |
| CN112235742A (en) | Gas meter with NB-IoT communication module embedded with program and data processing method | |
| CN209731295U (en) | A kind of fire cistern liquid level detection device | |
| CN109374075A (en) | Matrix form NB-IoT remote transmission intelligent water meter | |
| CN105404214B (en) | A kind of solar energy aerator intelligence control system and method | |
| CN110049112A (en) | A kind of fire cistern liquid level detection system and method | |
| CN209103519U (en) | A kind of universal telemetering terminal equipment | |
| CN210131289U (en) | Fire-fighting pipeline pressure detection device and system | |
| CN204600440U (en) | A kind of apparatus for testing body temperature and system | |
| CN214843454U (en) | Intelligent lithium electric flowmeter remote transmission equipment | |
| CN109471043A (en) | A kind of storage batteries of transformer substation group on-Line Monitor Device based on LTE mechanics of communication | |
| CN205210161U (en) | Optical fiber temperature fault indicator | |
| CN212304097U (en) | Intelligent power line plug | |
| CN210574260U (en) | Wireless leakage detection equipment and system | |
| CN209979045U (en) | WiFi intelligence pad of weighing | |
| CN208888611U (en) | A kind of super low-power consumption control system based on wireless bidirectional communication | |
| CN208903108U (en) | Remote monitoring system based on matrix form NB-IoT intellectual water meter | |
| CN202758231U (en) | Monitoring system for power environment in machine room | |
| CN208968610U (en) | Matrix form NB-IoT remote transmission intelligent water meter | |
| CN203334810U (en) | Electronic key of electromagnetic lock |
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 |