CN207215780U - A kind of ambient air quality detection means - Google Patents
A kind of ambient air quality detection means Download PDFInfo
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- CN207215780U CN207215780U CN201720916319.8U CN201720916319U CN207215780U CN 207215780 U CN207215780 U CN 207215780U CN 201720916319 U CN201720916319 U CN 201720916319U CN 207215780 U CN207215780 U CN 207215780U
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- air quality
- detection means
- ambient air
- quality detection
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Abstract
The utility model discloses a kind of ambient air quality detection means, it is made up of data transfer circuits, sensor interface, Wireless Transmitter, isolation circuit and communication interface；Ambient air quality detection means can carry out detecting the transmission of data by communication interface and Wireless Transmitter, sensor interface is provided with external-connected port, carbon dioxide indicator, moisture detector and PM2.5 detectors can be connected, ambient air quality detection means internal circuit is set to isolate with each detector, allow ambient air quality detection means configure a variety of detectors while internal circuit configuration it is simpler, and production cost and rate of breakdown are reduced, reduce maintenance difficulty.
Description
Technical field
A kind of environmental detection set is the utility model is related to, particularly a kind of ambient air quality detection means.
Background technology
Living environment is the basis of people's life and ensured, with the increase of urban population, the deterioration of environment, room air
Quality is gradually reduced, and people increasingly pay close attention to the living environment of oneself, begins to use environmental detector to detect the ring of oneself inhabitation
Border.At present, universal ambient air quality detection means is using the quality of sensor detection air, according to the environment number of detection
According to calculated by internal processor and obtain a result display on a display screen, however, ambient air quality detection means
Testing result be by manual transcription's typing, data can not be directly transmitted to central controller, can cause to detect data and exist
Easily changed during artificial transfer, there is very high error rate.
The content of the invention
For overcome the deficiencies in the prior art, the utility model provides a kind of ring simple in construction, can externally sending data
Border air quality detecting device.
Technical scheme is used by the utility model solves its technical problem：
A kind of ambient air quality detection means, by data transfer circuits, sensor interface, Wireless Transmitter, isolation electricity
Road and communication interface composition；The data transfer circuits are electric with the sensor interface, Wireless Transmitter and isolation circuit respectively
Connection；The isolation circuit electrically connects with the communication interface；Foregoing circuit provides work by the power supply circuit inside controller
Power supply.
Isolation circuit is ADUM1200 chips.
Sensor interface is provided with 3 detection sensor interfaces, is the first Sensing interface, the second Sensing interface and respectively
Three Sensing interfaces；First Sensing interface is provided with the port of connection carbon dioxide indicator；Second Sensing interface is set
It is equipped with the port of connection moisture detector；3rd Sensing interface is provided with the port of connection PM2.5 detectors.
Single-chip microcomputer model in data transfer circuits is M451RE6AE.
Power supply circuit includes switching power circuit；Switching power circuit includes inductance L2, inductance L3, electric capacity C18, electric capacity
C19, electric capacity C20 and electric capacity C21；After the electric capacity C18 is in parallel with the electric capacity C19, a termination 5V power supplys, another termination control
Ground；After the electric capacity C20 is in parallel with the electric capacity C21, one end connects single-chip microcomputer M451RE6AE 42 and 43 pins, another termination
Power supply；A termination REF5V power supplys of the inductance L2, another termination electric capacity C20, electric capacity C21 and the single-chip microcomputer
The node of M451RE6AE 42 and 43 pins；The termination control ground of the inductance L3, another termination power supply.
The beneficial effects of the utility model are：It is of the present utility model by data transfer circuits, sensor interface, be wirelessly transferred
Device, isolation circuit and communication interface composition；Detection means can carry out detecting the biography of data by communication interface and Wireless Transmitter
Defeated, sensor interface is provided with external-connected port, can connect carbon dioxide indicator, moisture detector and PM2.5 detectors, make ring
Border air quality detecting device internal circuit is isolated with each detector, allows ambient air quality detection means to configure a variety of detectors
While internal circuit configuration it is simpler, and reduce production cost and rate of breakdown, reduce maintenance difficulty.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the circuit block diagram of the present embodiment；
Fig. 2 is the power supply circuit Part I of the present embodiment；
Fig. 3 is the power supply circuit Part II of the present embodiment；
Fig. 4 is the power supply circuit Part III of the present embodiment；
Fig. 5 is the main control chip circuit diagram of the present embodiment；
Fig. 6 is the switching power circuit figure of the present embodiment；
Fig. 7 is the first Sensing interface circuit diagram of the present embodiment；
Fig. 8 is the second Sensing interface circuit diagram of the present embodiment；
Fig. 9 is the 3rd Sensing interface circuit diagram of the present embodiment；
Figure 10 is the SP485EEN communication interface circuit figures of the present embodiment；
Figure 11 is the first isolating chip circuit diagram of the present embodiment；
Figure 12 is the second isolating chip circuit diagram of the present embodiment；
Figure 13 is the Wireless Transmitter circuit diagram of the present embodiment；
Figure 14 is the SP232E communication interface circuit figures of the present embodiment.
Embodiment
A kind of ambient air quality detection means, by data transfer circuits, sensor interface, Wireless Transmitter, isolation electricity
Road and communication interface composition；The data transfer circuits are electric with the sensor interface, Wireless Transmitter and isolation circuit respectively
Connection；The isolation circuit electrically connects with the communication interface；Foregoing circuit provides work by the power supply circuit inside controller
Power supply；Isolation circuit is ADUM1200 chips；Foregoing circuit provides working power by the power supply circuit inside controller.In this reality
The communication interface applied in example includes SP232E communication interfaces and SP485EEN communication interfaces, can carry out 15 meters of full duplexs and 1200 meters
Semiduplex wired data transfer, and signal isolation is carried out to communication interface using two panels ADUM1200 chips, prevent to master control
Chip produces interference.
Sensor interface is provided with 3 detection sensor interfaces, is the first Sensing interface, the second Sensing interface and respectively
Three Sensing interfaces；First Sensing interface is provided with the port of connection carbon dioxide indicator；Second Sensing interface is set
It is equipped with the port of connection moisture detector；3rd Sensing interface is provided with the port of connection PM2.5 detectors, makes environment empty
Makings amount detecting device internal circuit is isolated with each detector, allows ambient air quality detection means to configure the same of a variety of detectors
When internal circuit configuration it is simpler, and reduce production cost and rate of breakdown, reduce maintenance difficulty；In the present embodiment
Three kinds of interface independent operatings, are independent of each other.
Single-chip microcomputer model in data transfer circuits is M451RE6AE, and data transfer circuits only turn to initial data
Change, change data is uniformly sent to outside central processing system by Wireless Transmitter or communication interface, simplifies surrounding air
Quality detection device internal circuit.
Power supply circuit includes transforming circuit, mu balanced circuit, low-voltage circuit and switching power circuit；Transforming circuit can be inside
Circuit provides 5V power supplys, and mu balanced circuit provides REF5V power supplys（Stable 5V voltages）, the power supply of low-voltage circuit is by transformation power supply circuit
There is provided, the power supply of switching power circuit is provided by transforming circuit and mu balanced circuit, and the power supply that low-voltage power supply circuit provides is 3.3V,
Switching power circuit includes inductance L2, inductance L3, electric capacity C18, electric capacity C19, electric capacity C20 and electric capacity C21；The electricity
After appearance C18 is in parallel with the electric capacity C19, a termination 5V power supplys, another termination control ground；The electric capacity C20 and electric capacity C21
After parallel connection, one end connects single-chip microcomputer M451RE6AE 42 and 43 pins, another termination power；A termination of the inductance L2
REF5V power supplys, another node for terminating the electric capacity C20, electric capacity C21 and single-chip microcomputer M451RE6AE 42 and 43 pins；It is described
The inductance L3 termination control ground, another termination power supply, inductance L3 is choke induction, plays isolation ground connection；
Switching power circuit provides independent current source for the AD conversion of data converting circuit.
Embodiment above can not limit the protection domain of the invention, and the personnel of professional skill field are not departing from
In the case of the invention general idea, the impartial modification and change done, the scope that the invention is covered is still fallen within
Within.
Claims (5)
- A kind of 1. ambient air quality detection means, by data transfer circuits, sensor interface, Wireless Transmitter, isolation circuit Formed with communication interface；The data transfer circuits are electrically connected with the sensor interface, Wireless Transmitter and isolation circuit respectively Connect；The isolation circuit electrically connects with the communication interface；Foregoing circuit provides work electricity by the power supply circuit inside controller Source.
- 2. a kind of ambient air quality detection means according to claim 1, it is characterised in that the isolation circuit is ADUM1200 chips.
- 3. a kind of ambient air quality detection means according to claim 1, it is characterised in that the sensor interface is set 3 detection sensor interfaces are equipped with, are the first Sensing interface, the second Sensing interface and the 3rd Sensing interface respectively；Described first Sensing interface is provided with the port of connection carbon dioxide indicator；Second Sensing interface is provided with connection moisture detector Port；3rd Sensing interface is provided with the port of connection PM2.5 detectors.
- A kind of 4. ambient air quality detection means according to claim 1, it is characterised in that the data transfer circuits In single-chip microcomputer model be M451RE6AE.
- 5. a kind of ambient air quality detection means according to claim 4, it is characterised in that the power supply circuit includes Switching power circuit；The switching power circuit includes inductance L2, inductance L3, electric capacity C18, electric capacity C19, electric capacity C20 and electric capacity C21；After the electric capacity C18 is in parallel with the electric capacity C19, a termination 5V power supplys, another termination control ground；The electric capacity C20 with After the electric capacity C21 parallel connections, 42 and 43 pins of a termination single-chip microcomputer M451RE6AE, another termination power；The electricity Feel a L2 termination REF5V power supplys, another termination electric capacity C20, electric capacity C21 draw with the 42 of single-chip microcomputer M451RE6AE and 43 The node of pin；The termination control ground of the inductance L3, another termination power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720916319.8U CN207215780U (en) | 2017-07-26 | 2017-07-26 | A kind of ambient air quality detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720916319.8U CN207215780U (en) | 2017-07-26 | 2017-07-26 | A kind of ambient air quality detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215780U true CN207215780U (en) | 2018-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720916319.8U Active CN207215780U (en) | 2017-07-26 | 2017-07-26 | A kind of ambient air quality detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207215780U (en) |
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2017
- 2017-07-26 CN CN201720916319.8U patent/CN207215780U/en active Active
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