CN208819351U - Harmful gas detection, alarm device - Google Patents
Harmful gas detection, alarm device Download PDFInfo
- Publication number
- CN208819351U CN208819351U CN201821482889.1U CN201821482889U CN208819351U CN 208819351 U CN208819351 U CN 208819351U CN 201821482889 U CN201821482889 U CN 201821482889U CN 208819351 U CN208819351 U CN 208819351U
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- CN
- China
- Prior art keywords
- gas sensor
- box body
- esp8266
- mercury
- gas
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- 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.)
- Expired - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The utility model discloses a kind of harmful gas detection, alarm device.Including a box body, USB interface is provided on front side of box body；It is provided with circuit board in the box body, reduction voltage circuit, ESP8266 module, gas sensor, OLED display screen are provided on the circuit board；The box body front vertical is provided with a gas passage；The gas sensor is located in gas passage；Air heating apparatus is provided with below the gas sensor in the gas passage, air heating apparatus provides 5 volts of operating voltages by USB interface.The utility model is used as main control chip using ESP8266, have many advantages, such as structure it is simple, it is easy to use, can WIFI transmit data, while carrying display screen, buzzer etc., can show current air conditions in time.It is easy to use due to can connect any computer, notebook or charger baby etc. using USB port.
Description
Technical field
The utility model relates to a kind of harmful gas detection, alarm device, in particular to a kind of pernicious gas being convenient for carrying
Detect warning device.
Background technique
With the raising of people's quality of the life, people are environmentally safe increasingly to be paid attention to.Occurs many on the market thus
Warning device to harmful gas.Usually structure is complicated for these alarms, and volume is big, it has not been convenient to carry.And since its structure is complicated, because
This its be usually operated at 220V, therefore, it is impossible to timely and conveniently use.
Utility model content
To overcome drawbacks described above, it is simple, easy to use, easy to carry that the purpose of this utility model is to provide a kind of structures
Harmful gas detection, alarm device.
In order to achieve the above objectives, the harmful gas detection, alarm device of the utility model, including a box body, on front side of box body
It is provided with USB interface；
It is provided with circuit board in the box body, is provided on the circuit board
Reduction voltage circuit, for 5 volts of voltages of USB interface to be dropped to 3.3V；
ESP8266 module provides operating voltage by the 3.3V power supply that reduction voltage circuit provides；
Gas sensor, operating voltage are provided by USB port, and data output end connects the first of ESP8266 module
I/O port；
OLED display screen, operating voltage are provided by USB port, and the end SCL connects the 2nd end IO of ESP8266 module
Mouthful, the end SDA connects the third I/O port of ESP8266；
The box body front vertical is provided with a gas passage；
The gas sensor is located in gas passage；
Be provided with air heating apparatus below the gas sensor in the gas passage, air heating apparatus by
USB interface provides 5 volts of operating voltages.
Preferably, also setting up a passive buzzer on the circuit board, wherein passive buzzer is mentioned by reduction voltage circuit
The 3.3V power supply of confession provides operating voltage, and the data input port of the passive buzzer and the 4th I/O port of ESP8266 connect
It connects.
Preferably, the air heater is two, it is separately positioned on above and below gas sensor；Further include
One mercury direction switch, the mercury direction switch includes the closed double glazing pipe being vertically arranged, in the upper of glass tube
A pair of electrodes is respectively arranged in lower both ends；The mercury of 1/2 volume is provided in the double glazing pipe；It is described to be located above
Gas sensor is connect by a pair of electrodes above top mercury direction switch with USB interface；The underlying gas
Body sensor is connect by a pair of electrodes below mercury direction switch with USB interface.
The utility model using ESP8266 be used as main control chip, have structure it is simple, it is easy to use, can WIFI transmitting number
According to the advantages that, while included display screen, buzzer etc. can show current air conditions in time.Due to using USB port,
Therefore any computer, notebook or charger baby etc. be can connect, it is easy to use.Air heating dress is increased in the air passageway
It sets, the air for entering air duct can be preheated, reduce the preheating time of gas sensor, improve air detection
Speed.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model.
Fig. 2 is the structural schematic diagram of mercury direction switch in the utility model.
Fig. 3 is the circuit diagram of mercury switch and air heating apparatus in the utility model.
Specific embodiment
The utility model will be further described below with reference to the accompanying drawings.
ESP8266 is the WI-FI low-power chip of Shanghai happy prosperous (ESPRESSIF) production, is that integrated level is highest in the industry
Wi-Fi chip, package dimension are only 5mm x 5mm.ESP8266EX highly integrated duplexer, radio frequency balun, power are put
Big device, low noise amplifier, filter and power management module, it is only necessary to which seldom peripheral circuit can drop to shared PCB space most
It is low.32 microcontrollers (MCU) of Tensilica L106 built in ESP8266EX have super low-power consumption and 16 RSIC, when
Clock rate degree reaches as high as 160MHz.It supports real time operating system (RTOS), Wi-Fi protocol stack has only used 20% MIPS at present,
Other are used equally for user program and exploitation.Multiple Type such as ESP8266-01, ESP8266- had been issued since chip emerges
The modules such as 12F, ESP8266-12E.Such as: ESP8266-12F, with 4Mflash, 16 I/O ports.
The utility model is based on ESP8266 module making.ESP8266-12F, the moulds such as ESP8266-12E can be used
Block.
Embodiment 1
As shown in Figure 1, the present embodiment includes a box body, usb 1 is provided on front side of box body；
It is provided with circuit board in the box body, is provided on the circuit board
Reduction voltage circuit 2 such as uses AMS1117 integrated regulated power supply for 5 volts of voltages of USB interface to be dropped to 3.3V；
ESP8266-12F module 3 provides operating voltage by the 3.3V power supply that reduction voltage circuit provides；
Gas sensor 4, operating voltage is provided by USB port, and data output end connects the first of ESP8266 module
I/O port；Gas sensor can use various gas sensors according to working environment, if MQ is serial, such as MQ-135, MQ-2, MQ-7
Deng, MQ series, volume is slightly larger.It has ready conditions and patch gas sensor can also be used, such as GM-802B ammonia gas sensor；Or take
The small size gas sensor for adding sieve (FIGARO) Ji Yan Co., Ltd. to produce, such as TGS2600, TGS2602.
OLED display screen 7, operating voltage is provided by USB port, and the end SCL connects the 2nd end IO of ESP8266 module
Mouthful, the end SDA connects the third I/O port of ESP8266；Commercially available 0.91 cun of OLED screen, outer dimension 38*12 can be used
Millimeter.With 4 ports, including power supply just, power supply is negative, SCL (clock line) and SDA (data line).
The box body front vertical is provided with a gas passage 5；
The gas sensor 4 is located in gas passage；
Be provided with air heating apparatus 6 below the gas sensor in the gas passage, air heating apparatus by
USB interface provides 5 volts of operating voltages.Air heating apparatus can be electric heating wire, be arranged in gas passage in a ring；It can also
To be made of ptc material.Air heating apparatus is increased in the air passageway, the air for entering air duct can be carried out
Preheating, reduces the preheating time of gas sensor, improves the speed of air detection；Meanwhile the air quilt at gas passage
After heating, it will form air flowing from bottom to top, be conducive to the detection of pernicious gas.
To sum up, in the present embodiment, using ESP8266 as main control chip, have structure simple, easy to use；It is detected
The pernicious gas data arrived by WIFI can real-time delivery data, with by buzzer complete alarm；Included display screen simultaneously, can
To show current air conditions in time.Due to using USB port, any computer, notebook or charger baby can connect
Deng easy to use.Air heating apparatus is increased in the air passageway, the air for entering air duct can be preheated,
The preheating time for reducing gas sensor improves the speed of air detection.
Embodiment 2
In embodiment 1, it is only provided with air heating apparatus below gas sensor, therefore there is side in its use process
Tropism brings inconvenience to using.
The present embodiment is further improvement on the basis of embodiment 1: the air heater is two, is set respectively
It sets above and below gas sensor.
It further include a mercury direction switch 8, the mercury direction switch includes the closed hollow glass being vertically arranged
A pair of electrodes 83,84 is respectively arranged in the upper and lower ends of glass tube in pipe 81；1/2 volume is provided in the double glazing pipe
Mercury 82；The gas sensor being located above is connect by a pair of electrodes above the mercury direction switch of top with USB
Mouth connection；The underlying gas sensor is connect by a pair of electrodes below mercury direction switch with USB interface.
Its working principle is as shown in figure 3, in figure, and K1 is upper electrode, K2 is lower electrode；61 be upper air heating dress
It sets, 62 be lower air heating device；When work, with the difference of use direction, mercury switch can have choosing under the effect of gravity
Select using different air heaters, to increase the convenience in use process.
Claims (3)
1. harmful gas detection, alarm device, which is characterized in that including a box body, USB interface is provided on front side of box body；
It is provided with circuit board in the box body, is provided on the circuit board
Reduction voltage circuit, for 5 volts of voltages of USB interface to be dropped to 3.3V；
ESP8266 module provides operating voltage by the 3.3V power supply that reduction voltage circuit provides；
Gas sensor, operating voltage are provided by USB port, and data output end connects the first end IO of ESP8266 module
Mouthful；
OLED display screen, operating voltage are provided by USB port, and the end SCL connects the second I/O port of ESP8266 module,
The third I/O port of the end SDA connection ESP8266；
The box body front vertical is provided with a gas passage；
The gas sensor is located in gas passage；
Air heating apparatus is provided with below the gas sensor in the gas passage, air heating apparatus is connect by USB
Mouth provides 5 volts of operating voltages.
2. harmful gas detection, alarm device as described in claim 1, which is characterized in that also set up on the circuit board
One passive buzzer, wherein passive buzzer provides operating voltage, the passive bee by the 3.3V power supply that reduction voltage circuit provides
The data input port of ring device and the 4th I/O port of ESP8266 connect.
3. harmful gas detection, alarm device as described in claim 1, which is characterized in that the air heating apparatus is two
It is a, it is separately positioned on above and below gas sensor；It further include a mercury direction switch, the mercury direction switch
Including the closed double glazing pipe being vertically arranged, a pair of electrodes is respectively set in the upper and lower ends of glass tube；In the hollow glass
The mercury of 1/2 volume is provided in glass pipe；The gas sensor being located above passes through above top mercury direction switch
A pair of electrodes connect with USB interface；The underlying gas sensor passes through a pair below mercury direction switch
Electrode is connect with USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482889.1U CN208819351U (en) | 2018-09-11 | 2018-09-11 | Harmful gas detection, alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821482889.1U CN208819351U (en) | 2018-09-11 | 2018-09-11 | Harmful gas detection, alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208819351U true CN208819351U (en) | 2019-05-03 |
Family
ID=66276751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821482889.1U Expired - Fee Related CN208819351U (en) | 2018-09-11 | 2018-09-11 | Harmful gas detection, alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208819351U (en) |
-
2018
- 2018-09-11 CN CN201821482889.1U patent/CN208819351U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190503 Termination date: 20190911 |