CN109781643A - A kind of distributed wireless ozone detection system - Google Patents
A kind of distributed wireless ozone detection system Download PDFInfo
- Publication number
- CN109781643A CN109781643A CN201811442775.9A CN201811442775A CN109781643A CN 109781643 A CN109781643 A CN 109781643A CN 201811442775 A CN201811442775 A CN 201811442775A CN 109781643 A CN109781643 A CN 109781643A
- Authority
- CN
- China
- Prior art keywords
- host
- module
- output end
- slave
- data
- 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
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a kind of distributed wireless ozone detection systems, including host and multiple slaves, the output end of the host is connect with slave, the host output end is connected with human-computer interaction module, the output end of the interactive mode and the input terminal of host connect, LCD MODULE is provided between the human-computer interaction module and host, the output end of the host is also connected with alarm module, mobile phone terminal and display module, the output end of the mobile phone terminal is connected by the input terminal of bluetooth communication and host, the output end of the host is connected by the input terminal of serial communication and display module.The present invention uses master-slave system, slave distributed collection, host is collected data and is focused on, i.e. slave carries out moisture data acquisition, host then collects each data, processing, monitoring, the display etc. for carrying out environmental data are concentrated, once the environmental quality data of point being monitored has been more than preset range, host is alarmed.
Description
Technical field
The present invention relates to ozone detection system technical field more particularly to a kind of distributed wireless ozone detection systems.
Background technique
Daily life field is the most widely used field of ozone technology, and related application product will also become all ozone
The maximum product in market in technical application product, wherein the ozone of low concentration can be used for food fresh keeping, decontamination, taste removal, disinfection
Deng, but when ozone concentration reaches 0.1ppm, the respiratory tract of exceeded ozone meeting intense stimulus people causes the neurotoxic of people,
There is destruction to the vitamin E in human skin, therefore must ozone harm harm as caused by organic exhaust gas
It must cause the great attention of people.
Host and slave are attached by the way of wired in traditional ozone environment quality detecting system, wire communication
The advantages of be that data transmission credibility is higher, but needs to be laid with more open-wire line, and area-limited, it is difficult to be laid with open-wire line, and existing
All is mostly on the market single gas detecting system, for hand-held single form, can not large area acquire data, do not have more
Data exchange operational capability.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, such as: in existing ozone detection system
It is wired connection between host and slave, and the acquisition of data is limited, and a kind of distributed wireless ozone detection system proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of distributed wireless ozone detection system, including host and multiple slaves, the output end and slave of the host
Connection, the host output end are connected with human-computer interaction module, the output end of the interactive mode and the input terminal of host
Connection, is provided with LCD MODULE, the output end of the host is also connected with report between the human-computer interaction module and host
The output end of alert module, mobile phone terminal and display module, the mobile phone terminal is connected by the input terminal of bluetooth communication and host,
The output end of the host is connected by the input terminal of serial communication and display module, the output end and host of the display module
The input terminal of connection connects, and the output end of the slave is connected with wireless telecommunications, the input terminal company of the wireless telecommunications and host
It connecing, the slave is connected with gas sensor module, and the input terminal of the slave and the output end of gas sensor module connect,
Single-chip microcontroller is mounted in the host and slave.
Preferably, the host includes signal processing module and microprocessor, the slave include signal acquisition module and
Microprocessor, is equipped with host software in the host, and the host software includes data receiver, data processing, and LCD data are aobvious
Show, serial ports output data to the end PC, bluetooth data transmission to mobile phone and beyond warning line alarm.
Preferably, the wireless telecommunications are NRF24L01 module, RXD the and TXD pin and NRF24L01 of the single-chip microcontroller
D0 the and D1 pin of module is connected directly, and the control pin of the NRF24L01 module is connected with the control pin of single-chip microcontroller, and
Wherein CS connects power supply line, that is, meets high level CS=1, and NRF24L01 module selects working channel 2 to carry out in 434.33MHz frequency range
Number passes.
Preferably, the LCD MODULE uses 2.8 cun of TFT Liquid Crystal Modules, and the circuit of LCD MODULE includes FPC
Interface circuit, touch control circuit, I/O expansion circuit, power circuit, TFT control interface, SD interface circuit.
Preferably, the single machine piece is connected with key function.
Preferably, the alarm module is connected with voice module.
Compared with prior art, the beneficial effects of the present invention are: using master-slave system, slave distributed collection, host is received
Collection data simultaneously focus on, i.e., slave carries out moisture data acquisition, and host then collects each data, concentrate and carry out environmental data
Processing, monitoring, display etc., once the environmental quality data of point being monitored has been more than preset range, host is alarmed.
Carried out data transmission between slave using communication, for different geographical, different application environments is also
Different quality detecting systems can be used, wireless multipoint soil moisture monitoring system uses wireless telecommunications, avoids in this way
The investment of wire communication is excessive, is applicable in and is limited, the drawbacks such as scalability difference have saved cable and cable wiring manufacture cost.
Detailed description of the invention
Fig. 1 is a kind of system block diagram of distributed wireless ozone detection system proposed by the present invention；
Fig. 2 is a kind of host circuit figure of distributed wireless ozone detection system proposed by the present invention；
Fig. 3 is a kind of slave circuit diagram of distributed wireless ozone detection system proposed by the present invention.
In figure: 1 host, 2 alarm modules, 3 human-computer interaction modules, 4 mobile phone terminals, 5 display modules, 6 wireless telecommunications, 7 from
Machine, 8 gas sensor modules.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Referring to Fig.1-3, a kind of distributed wireless ozone detection system, including host 1 and multiple slaves 7, the output of host 1
End is connect with slave 7, and 1 output end of host is connected with human-computer interaction module 3, and the output end of interactive mode is defeated with host 1
Enter end connection, LCD MODULE 5 is provided between human-computer interaction module 3 and host 1, the output end of host 1 is also connected with report
The output end of alert module 2, mobile phone terminal 4 and display module 5, mobile phone terminal 4 is connected by the input terminal of bluetooth communication and host 1
It connects, the output end of host 1 is connect by serial communication with the input terminal of display module 5, the output end and host 1 of display module 5
The input terminal of connection connects, and the output end of slave 7 is connected with wireless telecommunications 6, and wireless telecommunications 6 are connect with the input terminal of host 1, from
Machine 7 is connected with gas sensor module 8, and the input terminal of slave 7 is connect with the output end of gas sensor module 8, host 1 and from
Single-chip microcontroller is mounted in machine 7.
Gas sensor module 8 in this system can measure the ozone in environment using O3/C-200 ozone sensor
Percentage, it is small by measurement other unrelated composition influences of environment, it is exported by its signal after modular circuit direct and single-chip microcontroller
PA0 pin is connected directly, and is acquired conversion by AD inside STM32 single-chip microcontroller.
The Ozone Monitor is exactly the principle using uItraviolet absorption methods, generates ultraviolet light with stable ultraviolet light source,
Other length ultraviolet light are filtered out with lightwave filter, only wavelength 253.7nm are allowed to pass through, by sample photoelectric sensor, then
Behind Ozone Absorption pond, sampling photoelectric sensor is reached, passes through sample photoelectric sensor and sampling photoelectric sensor electric signal
Compare, using the calculating of mathematical model, can obtain ozone concentration size.
Wireless telecommunications 6 are NRF24L01 monolithic wireless transceiver, machine NRF24L01 module, RXD the and TXD pin of single-chip microcontroller
It is connected directly with D0 the and D1 pin of NRF24L01 module, the control pin phase of the control pin and single-chip microcontroller of NRF24L01 module
Even, and wherein CS connects power supply line, that is, meets high level CS=1, and NRF24L01 module selects working channel 2 i.e. in 434.33MHz frequency
Duan Jinhang number passes, when the system is operating, by run in single-chip microcontroller control program real-time control its operating mode reception state, hair
State and standby micro energy lose state are penetrated, when carrying out wireless data transmission between host 1 and slave 7, the NRF24L01 of transmitting terminal
The data to be transferred of single-chip microcontroller is modulated into radiofrequency signal by module, re-sends to the NRF24L01 module of receiving end, receiving end
NRF24L01 module receives radiofrequency signal, and it is modulated into TTL signal and is sent to single-chip microcontroller.
LCD MODULE 5 use 2.8 cun of TFT Liquid Crystal Modules, the circuit of LCD MODULE 5 include FPC interface circuit,
Touch control circuit, I/O expansion circuit, power circuit, TFT control interface, SD interface circuit, TFT makes on mobile phone at present
With the most extensively, the screen generallyd use in the colour screen handset of middle and high end divides 65536 colors and 260,000 colors, and 16,000,000 three kinds of colors are shown
Show that effect is very outstanding, but with advances in technology, TFT is not applied only on mobile phone and many intelligence instruments, industry control are man-machine
Interface also all using TFT replace before screen, since TFT can only be in 3.3V operating at voltages, to work as input voltage VIN
It when for 5V, needs to drop to 3.3V voltage by 3.3V pressure stabilizing IC, when input voltage is 3.3V, need J2 using 0 Europe resistance
It is shorted, is equivalent to not by pressure stabilizing IC directly to module for power supply.
Single machine piece is connected with key function, and key is directly inputted from the pin of single-chip microcontroller, it is only necessary to simple keyboard
Scanner program can reflect the state of system operation by liquid crystal display in time, and keyboard can be manually arranged, key
Disk and liquid crystal display make human-computer interaction more convenient flexibly, and alarm module 2 is connected with voice module, and the circuit of alarm module 2 is adopted
Preset range, Jiu Huiming are had exceeded once the measured value of point being monitored is too low or too high with voice module and circuit connection
Sounding alarm is rung, staff is reminded to take necessary measure.
7 software configuration of slave includes the initialization of processor, and built-in chip type AD's is enabled, and built-in chip type DMA's is enabled, is driven
Dynamic sensor, driving wireless module transmit data.
Processor initialization: this system uses the processor of STM32F103ZET6, and slave 7 initializes core after powering on first
The clock system of piece.
Built-in chip type AD is enabled: this system acquires 8 groups of data altogether, therefore needs 8 simulations using 8 channels AD by acquisition
Amount is converted into digital quantity, therefore channel 7 is arrived in channel 0, shows the data acquisition of multichannel, sets AD to improve conversion rate
Continuous conversion and scan pattern, complete the digital-to-analogue conversion in 8 channels once, facilitate the reading of data.
Built-in chip type DMA is enabled: the DMA channel of built-in chip type, can directly replicate data by peripheral hardware AD data register
To memory, the result of AD conversion very easily can be read in into memory using DMA channel, and come in the process without CPU
Shift data, a degree of power consumption for reducing CPU.Using the dma controller 1 of chip interior i.e. DMA1 in this system, make
With the channel 1 of DMA1, the data in AD register are passed to defined array, AD acquires 8 groups of data, array value 0~
Between 4096, therefore it is no symbol short that length of defining arrays, which is 8 types, is used to store data.
Driving sensor: this system is mainly the sensing for detect while 7 pernicious gases being assisted to detect to ozone
Device by the gas componant in sensor acquisition air, and is translated into analog output to the channel AD of processor, in system
It is delayed first after completing initialization, sensor is waited to complete preheating, sensor is begun in detection air after completing preheating
The content of gas to be checked, then exports analog quantity.
Slave 7 will transmit data to host 1 by wireless module after completing the acquisition of data.It is used in this system
NRF24L01 carries out the transmission of data, and the data width of the transmission of NRF24L01 is 8, therefore defining a length is 16
Transmission data register area of the unsigned character type array as NRF24L01, numberical range 0~255；The numerical value of AD 0~
4096, NRF24L01 buffer area value range 0~255, therefore AD value is handled, it needs to split data, kilobit
With hundred compositions, one double figures, ten and position one double figures of composition are stored in array respectively.Host 1 receive data it
Afterwards, then by Data Synthesis, AD value is taken out.
Various sensors are first preheated upon power-up of the system, then the variation of environmental factor can be converted into electric signal
That is analog quantity is finally handled analog quantity by processor by the AD pin of processor by analog input to processor.
Initializing the AD controller 1 enabled inside STM32F103ZET6 processor after slave 7 is ADC1 and dma controller 1
That is DMA1, by ADC1 be set as continuously convert and scan pattern, ADC1 will to sensor by the channel AD input analog quantity into
Row digital-to-analogue conversion, built-in AD are 12, and output digital quantity is up to 4096, and the digital quantity as transformation result output will be deposited
The data register for entering ADC1 is copied directly to again by built-in DMA channel by the data in ADC register after converting
In memory, the transformation result in multiple channels AD disposably can be passed to by memory by DMA；It is arrived and is led to using channel 0 in this system
Road 10 uses 11 channels AD altogether, and 11 AD conversion values can be obtained, define in a program length be 12 it is short whole without symbol
Type array is used to store the AD conversion result that DMA is passed to memory.
Temperature value and humidity value that DHT11 is exported are read after executing the above operation, Temperature Humidity Sensor DHT11 can be surveyed simultaneously
The analogue value of acquisition can be converted into digital output by the value of temperature and humidity out, therefore DHT11 can be read directly in processor
Measurement result, obtain the occurrence of temperature and humidity.
The data acquisition to indoor environment factor is completed to this slave 7, is then transferred data to by NRF24L01
Host 1, the transmission data width of NRF24L01 are a byte, and the maximum number of output is 255, and the number of AD conversion output
Amount will be handled digital quantity within the scope of 0~4096, define the unsigned character type number that a length is 24
Group is used to store the data that host 1 is sent to via NRF24L01 as data buffer zone, and the digital quantity of four figures is turned
It changes two double figures into and is stored in transmission array respectively, host 1 is then communicated to, by host 1 after receiving array, by every two
Element merges, and is reduced to four digital quantities, in the processing for carrying out data.
Host 1 includes signal processing module and microprocessor, and slave 7 includes signal acquisition module and microprocessor, host 1
1 software of host is inside installed, 1 software of host includes data receiver, data processing, and LCD data are shown, serial ports output data to PC
End, bluetooth data transmission to mobile phone and beyond warning line alarm, 1 part of host use processor single-chip microcontroller be
STM32F103ZET6 single-chip microcontroller.
Data receiver: host 1 connects wireless module NRF24L01, establishes data transmission, host with the wireless module of slave 7
1 sends different addresses to distinguish slave 7, and the data of acquisition will be passed to master by slave 7 identical with the address that host 1 is sent
Machine 1, after host 1 receives data, data receiver is completed.
Data processing: being a byte, two byte of AD collection value data length, slave since NRF24L01 sends data length
The AD value of two bytes is split as two bytes when 7 transmission, therefore received two byte datas are combined into one four by host 1
Position integer, what is finally obtained is the transformation result of AD, and AD value is unfavorable for the content that user gets information about each ingredient in air, because
AD value is converted to the valid data with practical significance according to specific formula according to the characteristic of sensor by this.
LCD data are shown: 2.8 cun of TFTLCD (Thin Film Transistor-LCD), resolution ratio 240* are used in system
320, use ILI341 as driving IC, system electrification later first initializes the hardware of LCD, then reads the initial of LCD
Change sequence and to select corresponding driving agreement then coordinate to be shown is set, the operational order of GRAM is written, then
Color data is written, LCD, which shows one at coordinate, later color dot, and it is in LCD that this operation is drawn a little by being called on LCD
Show character substantially, the character shown on LCD is all formed by putting one by one, by the coordinate of set-point by point sink
Lines are polymerized to, the shape of character is finally shown on LCD, according to point at the principle of line, generate software using type matrix
" PCtoLCD " generates the dot matrix collection of type matrix, each character is transformed into several points, then generates coordinate a little, is stored in
Dot matrix collection, drawing point according to dot matrix collection when display can be completed a display for character；For convenience of the display of character, picture point function is carried out
Encapsulation, is encapsulated as digital explicit function and character explicit function, and the data according to display are that character or number selection are corresponding
The display of data can be completed in function, shows greeting, title and abbreviated functional description after booting LCD completes initialization, then
The received data of host 1 are shown, the first row shows the title of slave 7, and each detection is once shown by the second row
The value of title and slave 7 detection of amount, is delayed after having shown first slave 7, refreshes the title of slave 7 and the data of acquisition.
Serial ports output data is to the end PC: the serial ports of enabled STM32F103ZET6 is installed COM Debug Assistant on PC, is used
Line connects the serial ports of host 1 and the USB interface of PC, can export the data that host 1 is handled by serial ports after completing preparation
To the end PC, data can be checked by the end PC.
Bluetooth data transmission is to mobile phone: enabled bluetooth module installs bluetooth serial ports debugging assistant on mobile phone terminal 4, when
After host 1 completes initialization, Bluetooth of mobile phone and bluetooth serial ports debugging assistant APP are opened, connects host 1 and mobile phone by bluetooth
It connects, after data processing, i.e. starting bluetooth module transmits data to mobile phone, and user can open at any time APP and check data.
It alarms beyond warning line: being configured with key module in host 1, for the pre-value of alarm is arranged, mode switching key can
To be switched to different collection capacities, pre-value is set；Pre-value adds, and presses pre-value increase every time；Pre-value subtracts, and presses pre-value every time and subtracts
It is few；After accomplishing the setting up pre-value will be output to the end PC by serially printing, and user can check that the pre-value set is big by the end PC
It is small, after host 1 is handled AD value, the result of acquisition can be compared with the pre-value of setting, if exceeding pre-value, host
1 will drive buzzer to alarm, and detection limit is exceeded prompting to have in user's air, so that user takes certain measure.
7 software section of slave mainly completes A/D conversion and sends data to host 1 by wireless module, and shows the survey
The numerical value of pilot converts interruption and wireless module to A/D first and liquid crystal carries out Initialize installation, and what A/D was interrupted initially melts
PA mouthfuls of clocks, enabled ADC1 clock are opened, and Frequency Dividing Factor is set, the operating mode that ADC1 is set, ADC1 sequence of rules is set
Relevant information opens converter, reads ADC value；
And the length for sending data is also identical with the length of the reception data of host 1, while meeting the two conditions
The communication being just able to achieve between host 1 and slave 7, system starts to carry out A/D conversion after the completion of initialization, completes change data
After transmission and after showing as a result, data are sent completely, caching array is reset, is started A/D conversion by cyclic process, thus
Realize acquisition in real time, in real time conversion, real-time display and real-time sending function.
In the wireless ozone monitoring system, the data communication between single-chip microcontroller uses one-to-many master slave mode, utilizes
24G multiband wireless communications.In this system, in order to make host 1 and each slave 7 and 1 independence of host, accurate and effective communication, respectively
A slave 7 is designed with oneself independent address, and slave 7 is responsible for acquisition data and collected data are returned to host 1, by leading
Machine 1 is further again to be handled.
More than, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of distributed wireless ozone detection system, including host (1) and multiple slaves (7), the output end of the host (1)
It is connect with slave (7), which is characterized in that host (1) output end is connected with human-computer interaction module (3), the human-computer interaction
The output end of mode is connect with the input terminal of host (1), is provided with liquid crystal between the human-computer interaction module (3) and host (1)
Display module (5), the output end of the host (1) are also connected with alarm module (2), mobile phone terminal (4) and display module (5),
The output end of the mobile phone terminal (4) is connect by bluetooth communication with the input terminal of host (1), the output end of the host (1)
It is connect by serial communication with the input terminal of display module (5), what the output end of the display module (5) was connect with host (1)
Input terminal connection, the output end of the slave (7) are connected with wireless telecommunications (6), and the wireless telecommunications (6) are defeated with host (1)
Enter end connection, the slave (7) is connected with gas sensor module (8), the input terminal and gas sensor mould of the slave (7)
The output end of block (8) connects, and is mounted on single-chip microcontroller in the host (1) and slave (7).
2. a kind of distributed wireless ozone detection system according to claim 1, which is characterized in that host (1) packet
Signal processing module and microprocessor are included, the slave (7) includes signal acquisition module and microprocessor, and the host (1) is interior
Host (1) software is installed, host (1) software includes data receiver, data processing, and LCD data show that serial ports exports number
It alarms according to the end PC, bluetooth data transmission to mobile phone and beyond warning line.
3. a kind of distributed wireless ozone detection system according to claim 1, which is characterized in that the wireless telecommunications
It (6) is NRF24L01 module, RXD the and TXD pin of the single-chip microcontroller is connected directly with D0 the and D1 pin of NRF24L01 module,
The control pin of the NRF24L01 module is connected with the control pin of single-chip microcontroller, and wherein CS connects power supply line.
4. a kind of distributed wireless ozone detection system according to claim 1, which is characterized in that the liquid crystal display mode
Block (5) use 2.8 cun of TFT Liquid Crystal Modules, the circuit of LCD MODULE (5) include FPC interface circuit, touch control circuit,
I/O expansion circuit, power circuit, TFT control interface, SD interface circuit.
5. a kind of distributed wireless ozone detection system according to claim 1, which is characterized in that the single machine piece connection
There is key function.
6. a kind of distributed wireless ozone detection system according to claim 1, which is characterized in that the alarm module
(2) it is connected with voice module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442775.9A CN109781643A (en) | 2018-11-29 | 2018-11-29 | A kind of distributed wireless ozone detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811442775.9A CN109781643A (en) | 2018-11-29 | 2018-11-29 | A kind of distributed wireless ozone detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109781643A true CN109781643A (en) | 2019-05-21 |
Family
ID=66496040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811442775.9A Pending CN109781643A (en) | 2018-11-29 | 2018-11-29 | A kind of distributed wireless ozone detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109781643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967454A (en) * | 2019-12-23 | 2020-04-07 | 中国航空工业集团公司沈阳飞机设计研究所 | Distributed oxygen concentration real-time measurement system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203070498U (en) * | 2013-02-06 | 2013-07-17 | 陕西理工学院 | Distributed combustion gas leakage monitoring alarm system |
| CN203337633U (en) * | 2013-07-02 | 2013-12-11 | 福建师范大学 | Indoor gas concentration monitoring device based on wireless interconnection |
| CN103453985A (en) * | 2013-09-02 | 2013-12-18 | 陕西理工学院 | Distribution type wireless luminous intensity measurement instrument |
| CN107167562A (en) * | 2017-06-30 | 2017-09-15 | 天津同创云科技术股份有限公司 | A kind of gas detecting controller of gas |
| CN108279289A (en) * | 2018-04-17 | 2018-07-13 | 四川巴斯德环境检测技术有限责任公司 | A kind of distributed room air detecting system based on wireless transmission |
| US20180308347A1 (en) * | 2013-10-07 | 2018-10-25 | Google Llc | Mobile user interfaces for smart-home hazard detection devices |
-
2018
- 2018-11-29 CN CN201811442775.9A patent/CN109781643A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203070498U (en) * | 2013-02-06 | 2013-07-17 | 陕西理工学院 | Distributed combustion gas leakage monitoring alarm system |
| CN203337633U (en) * | 2013-07-02 | 2013-12-11 | 福建师范大学 | Indoor gas concentration monitoring device based on wireless interconnection |
| CN103453985A (en) * | 2013-09-02 | 2013-12-18 | 陕西理工学院 | Distribution type wireless luminous intensity measurement instrument |
| US20180308347A1 (en) * | 2013-10-07 | 2018-10-25 | Google Llc | Mobile user interfaces for smart-home hazard detection devices |
| CN107167562A (en) * | 2017-06-30 | 2017-09-15 | 天津同创云科技术股份有限公司 | A kind of gas detecting controller of gas |
| CN108279289A (en) * | 2018-04-17 | 2018-07-13 | 四川巴斯德环境检测技术有限责任公司 | A kind of distributed room air detecting system based on wireless transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110967454A (en) * | 2019-12-23 | 2020-04-07 | 中国航空工业集团公司沈阳飞机设计研究所 | Distributed oxygen concentration real-time measurement system and method |
| CN110967454B (en) * | 2019-12-23 | 2022-06-07 | 中国航空工业集团公司沈阳飞机设计研究所 | Distributed oxygen concentration real-time measurement system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102928394A (en) | Portable Raman spectrum noninvasive glucose meter | |
| Ladgaonkar | Design and implementation of sensor node for wireless sensors network to monitor humidity of high-tech polyhouse environment | |
| CN102579021A (en) | System and method for measuring pulse blood oxygen | |
| CN203414797U (en) | Greenhouse measuring and control device based on wireless sensing network | |
| CN109781643A (en) | A kind of distributed wireless ozone detection system | |
| CN203576483U (en) | Household portable type human body physiological parameter tester | |
| CN206472646U (en) | A kind of aquaculture monitoring system based on ZigBee | |
| CN207066485U (en) | Vegetables temperature canopy monitoring system based on Internet of Things | |
| CN110231311A (en) | A kind of portable fiber-optic turbidity detection device | |
| CN208366386U (en) | A kind of multi-path data acquiring system | |
| CN202994794U (en) | Bluetooth-based household miniature urine analyzer | |
| CN202836816U (en) | Multipoint temperature measurement circuit | |
| CN106768036A (en) | Adjustable agricultural Temperature Humidity Sensor with infrared receiver | |
| CN202255647U (en) | Multifunctional digital temperature instrument | |
| CN108563597A (en) | A kind of multiplexed signal sampling and processing system with strong extended capability | |
| CN208506130U (en) | Electronic tag resistance detection equipment | |
| CN102973250A (en) | Non-contact medical temperature measuring device and application thereof | |
| CN206906361U (en) | A kind of industrial circulating water cultivating monitoring water quality on line system | |
| CN208065163U (en) | A kind of digital pulse measuring device | |
| CN104224136A (en) | Method and device for medically and wirelessly monitoring body temperature | |
| CN112629581A (en) | Green house humiture measurement system | |
| Lu | Wireless granary temperature and humidity monitoring system | |
| CN202108544U (en) | Intelligent type mine pressure monitoring substation | |
| CN108257367A (en) | A kind of multiplexed signal sampling and processing system with Bluetooth transmission function | |
| CN108388172A (en) | A kind of multiplexed signal sampling and processing system with strong anti-interference ability |
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 |