CN209432783U - A kind of portable formaldehyde examination terminal - Google Patents
A kind of portable formaldehyde examination terminal Download PDFInfo
- Publication number
- CN209432783U CN209432783U CN201822217642.3U CN201822217642U CN209432783U CN 209432783 U CN209432783 U CN 209432783U CN 201822217642 U CN201822217642 U CN 201822217642U CN 209432783 U CN209432783 U CN 209432783U
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- China
- Prior art keywords
- formaldehyde
- circuit
- microcontroller
- formaldehyde examination
- portable
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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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Abstract
The utility model discloses a kind of portable formaldehyde examination terminals, include data processing circuit, formaldehyde examination circuit and 4G telecommunication circuit；It is provided with the microcontroller handled collected formaldehyde parameter information in the data processing circuit, includes the formaldehyde acquisition chip for acquiring formaldehyde information in the formaldehyde examination circuit；The formaldehyde acquisition chip is connected by the end ADC of ADC interface and microcontroller；4G telecommunication circuit obtains the data that microcontroller is sent by serial ports and microcontroller serial communication, then the data sent will be needed to be wirelessly transmitted to inspection center by 4G communication.In the resident room that the utility model can detect in real time and working environment formaldehyde, it can effectively, accurately acquire indoor formaldehyde concentration signal and radio to inspection center, resident can take into account when to move according to the concentration of formaldehyde data acquired in real time, avoid the exceeded harm generated to human health of indoor formaldehyde；Meanwhile also saving the investment of manpower and material resources.
Description
Technical field
The utility model relates to the inspections of a kind of portable formaldehyde examination terminal more particularly to indoor formaldehyde parameter real-time measurement
Survey terminal.
Background technique
With the quickening of modern life rhythm, the raising of living standard, more and more people begin to focus on oneself and occupy
It is indoor caused by a series of finishing work such as paint due to furniture when new family moves in firmly with the content of formaldehyde of working environment
Gaseous contamination is always hot spot concerned by people, and the polluted gas of indoor generation is mainly based on formaldehyde, and danger caused by it
Evil is also bigger.
Therefore, present people can please detect special mechanism for monitoring before moving in and detect indoor content of formaldehyde, until
Content of formaldehyde can just be moved in down to after in the range of regulation.Having more interior is not to play formaldehyde in one-time detection and contain
Amount is just in the value range of standard.Therefore.In order to move in as soon as possible；Client needs to detect indoor content of formaldehyde in real time.?
Before moving in, the people for some need often monitoring content of formaldehyde, but monitoring requires manually to run errands each time, very
Trouble, and testing cost and cost of labor are also relatively high.Cause the waste of manpower and material resources.
Summary of the invention
For the above technical issues, the technical program provides a kind of portable formaldehyde examination terminal, can effectively solve
The certainly above problem.
The utility model is achieved through the following technical solutions:
A kind of portable formaldehyde examination terminal includes data processing circuit, formaldehyde examination circuit and 4G telecommunication circuit；It is described
Data processing circuit in be provided with the microcontroller handled collected formaldehyde parameter information, the formaldehyde examination
It include the formaldehyde acquisition chip for acquiring formaldehyde information in circuit；The formaldehyde acquisition chip passes through ADC interface and microcontroller
The end ADC of device connects；4G telecommunication circuit obtains the data that microcontroller is sent by serial ports and microcontroller serial communication, then
The data sent will be needed to be wirelessly transmitted to inspection center by 4G communication.
Further, the microcontroller is connected with the peripheral circuit comprising crystal oscillator and filter capacitor.
Further, the 4G telecommunication circuit passes through UART serial ports and microcontroller serial communication.
Further, operational amplifier Q1 is connected in the formaldehyde examination circuit.
Further, the microcontroller is connected with display circuit.
Further, the display circuit is connected by 8 parallel-by-bit interfaces with microcontroller I/O interface.
Further, in the data processing circuit microcontroller using MSP430F149 chip；The first
Formaldehyde acquisition chip is using LTC1049 in aldehyde detection circuit, in the 4G telecommunication circuit 4G communication chip using
USR-LTE-7S4, the display circuit is using LCD12864.
(3) beneficial effect
The utility model proposes a kind of portable formaldehyde examination terminal have compared with prior art with following
Beneficial effect:
(1) the real-time of the fields state-of-the-art technologies such as electronic integration technology, serial communication, Low-power Technology and 4G communication has been merged
Detection device can detect indoor content of formaldehyde in real time, and use wired and wireless mixed communication mode, can be using wireless
Content of formaldehyde information is transmitted to inspection center by the mode of transmission.It is highly suitable for real-time to personal household and office environments parameter
Acquisition has a significant effect for promoting automatic management level, saving manpower and fund.
(2) by microcontroller in data processing circuit using MSP430F149 chip；In the formaldehyde examination circuit
Formaldehyde acquisition chip is using LTC1049, and 4G communication chip is using USR-LTE-7S4 in the 4G telecommunication circuit.Make
Obtaining the detection terminal has many advantages, such as portability, at low cost, easy to maintain, automation, low-power consumption, engineer application with higher
Value and market popularization value, there is very wide application prospect.
(3) design of the peripheral circuit of microcontroller, crystal oscillating circuit have the function of even if；The design of filter capacitor, energy
Collected content of formaldehyde information is filtered, the stability and accuracy rate of formaldehyde information are increased.
(4) in formaldehyde examination circuit operational amplifier Q1 design, formaldehyde examination circuit receive formaldehyde sensor transmission
Analog quantity parameter, after operational amplifier Q1 amplifier, then by ADC interface connect MSP430F149 chip ADC pin, will put
Concentration of formaldehyde analog quantity after big is converted to digital signal, then carries out digital filter to it by microcontroller MSP430F149 chip
Wave, the formaldehyde numerical value measured.
(5) design of display circuit, so that the terminal can be with real-time display formaldehyde parameter information.LCD12864 is a kind of tool
There are 4/8 parallel-by-bits, 2 lines or a serial multiple interfaces mode of 3 lines, the flexible interface mode of display circuit and simply and easily grasps
It instructs, may make up complete Chinese human-computer interaction graphical interfaces.
Detailed description of the invention
Fig. 1 is the integrally-built connection signal block diagram of the utility model.
Fig. 2 is the circuit connection diagram of data processing circuit in the utility model.
Fig. 3 is the circuit connection diagram of formaldehyde examination circuit in the utility model.
Fig. 4 is the circuit connection diagram of 4G telecommunication circuit in the utility model.
Fig. 5 is the circuit connection diagram of display circuit in the utility model.
Fig. 6 is the circuit connection diagram of power-switching circuit in the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.The described embodiments are only a part of the embodiments of the utility model, rather than whole implementation
Example.Without departing from the design concept of the present utility model, ordinary people in the field does the technical solution of the utility model
All variations and modifications out, should fall within the protection scope of the present utility model.
Embodiment:
A kind of portable formaldehyde examination terminal includes data processing circuit, formaldehyde examination circuit and 4G telecommunication circuit；It is described
Data processing circuit in be provided with the microcontroller handled collected formaldehyde parameter information, the formaldehyde examination
It include the formaldehyde acquisition chip for acquiring formaldehyde information in circuit；In the data processing circuit microcontroller using
MSP430F149 chip；Formaldehyde acquisition chip is using LTC1049 in the formaldehyde examination circuit, in the 4G telecommunication circuit
4G communication chip is using USR-LTE-7S4.
Working principle:
Microcontroller in data processing circuit uses MSP430F149 chip, and interface resource is abundant, microcontroller is adopted
There are the 16 super low power consuming single chip processor MSP430F149 produced with TI company 5 grades of low-power consumption modes can flexibly switch suitably
Mode reduces power consumption.Peripheral circuit mainly includes crystal oscillator and filter capacitor.It is connect by 4G telecommunication circuit with inspection center, is led to
It crosses UART serial ports and realizes that the connection with 4G telecommunication circuit passes through ADC interface by the connection of parallel bus realization and display circuit
Realize the connection with formaldehyde examination circuit.
Formaldehyde acquisition chip in formaldehyde examination circuit uses LTC1049 chip, it is a with internal capacitor
Low-power, zero shift operational amplifier, formaldehyde examination circuit receives the analog quantity parameter of formaldehyde sensor transmission, after amplifier,
MSP430F149 chip ADC pin is connected by ADC interface, amplified concentration of formaldehyde analog quantity is converted into digital signal,
Digital filtering is carried out to it by microcontroller MSP430F149 chip again, the formaldehyde numerical value measured.
4G telecommunication circuit uses the USR-LTE-7S4 module of someone's science and technology, it is a feature-rich M2M product, uses
Family need be simply to set, so that it may realize serial ports to network bi-directional data transparent transmission, the circuit by USB interface reception come
The formaldehyde supplemental characteristic transmitted from data processing circuit sends data to inspection center by 4G telecommunication circuit, and receives and
The feedback command of self-test measured center.
Physical circuit connection:
The connection type of microcontroller and each module:
Formaldehyde acquisition chip LTC1049 is connected by the ADC interface of its output end and the end ADC of microcontroller MSP430F149
It connects.The 6th pin of formaldehyde acquisition chip LTC1049 is connect with the 26th pin of microcontroller MSP430F149.
The USR-LTE-7S4 of 4G telecommunication circuit is obtained by UART serial ports and microcontroller MSP430F149 serial communication
The data that microcontroller is sent, then the data sent will be needed to be wirelessly transmitted to inspection center by 4G communication.USR-LTE-7S4
6-7 pin connect with the 34-35 pin of microcontroller MSP430F149；The 19th pin and micro-control of USR-LTE-7S4
The 58th pin of device MSP430F149 processed connects；The 20-23 pin of USR-LTE-7S4 is connect with the 1-4 pin of its SIM.
The microcontroller is connected with display circuit, and display circuit uses display screen LCD12864, LCD12864 to pass through 8
Parallel-by-bit interface is connected with microcontroller I/O interface.The of the interface 2-14 pin of display circuit and microcontroller MSP430F149
The connection of 36-47 pin, the 15-16 pin of interface are connect with the 49-50 pin of microcontroller MSP430F149.
The peripheral circuit of microcontroller:
Microcontroller MSP430F149 be connected with include crystal oscillating circuit and filter capacitor for timing peripheral circuit.
The 52(XT2OUT of microcontroller MSP430F149) and 53(XT2IN) pin respectively with the both ends of crystal oscillator Y1 connect
It connects, the both ends of crystal oscillator Y1 are parallel with filter capacitor C1 and C2.
The 8(XIN of microcontroller MSP430F149) and 9(XOUT) pin is connect with the both ends of crystal oscillator Y2 respectively.
The 7th pin (VREF+) of microcontroller MSP430F149 is connect with the anode of filter capacitor C12, C13, filtered electrical
Hold the cathode ground connection of C12, C13.
The 10th pin (VeREF+) of microcontroller MSP430F149 is connect with the anode of filter capacitor C9, C10, filtered electrical
Hold the cathode ground connection of C9, C10.
The 11st pin (VREF-) of microcontroller MSP430F149 is connect with the anode of filter capacitor C15, C16, filtered electrical
Hold the cathode ground connection of C15, C16.
The 62nd pin (AVss) of microcontroller MSP430F149 is connect with the anode of filter capacitor C7, C8, filter capacitor
The cathode of C7, C8 are grounded.
The 64th pin (AVss) of microcontroller MSP430F149 is connect with the anode of filter capacitor C5, C6, filter capacitor
The cathode of C5, C6 are grounded.
The connection type of operational amplifier in formaldehyde Acquisition Circuit:
Wherein, the input terminal of the formaldehyde acquisition chip LTC1049 is connected with operational amplifier Q1.The operation is put
The 2nd pin of big device Q1 connects to power supply, the 1st and 3 pins respectively with the output end of formaldehyde sensor (Sensor-) and
(Sensor+) it connects, the 2nd pin and the 3rd of operational amplifier Q1 the 3rd and 1 pin respectively with formaldehyde acquisition chip LTC1049 draws
Foot connection.
Claims (7)
1. a kind of portable formaldehyde examination terminal, it is characterised in that: include data processing circuit, formaldehyde examination circuit and 4G communication
Circuit；The microcontroller handled collected formaldehyde parameter information is provided in the data processing circuit, it is described
Formaldehyde examination circuit in include acquire formaldehyde information formaldehyde acquisition chip；The formaldehyde acquisition chip is connect by ADC
Mouth is connect with the end ADC of microcontroller；4G telecommunication circuit is obtained microcontroller and is sent by serial ports and microcontroller serial communication
Data, then the data that send will be needed to be wirelessly transmitted to inspection center by 4G communication.
2. a kind of portable formaldehyde examination terminal according to claim 1, it is characterised in that: the microcontroller connection
There is the peripheral circuit comprising crystal oscillator and filter capacitor.
3. a kind of portable formaldehyde examination terminal according to claim 1, it is characterised in that: the 4G telecommunication circuit passes through
UART serial ports and microcontroller serial communication.
4. a kind of portable formaldehyde examination terminal according to claim 1, it is characterised in that: the formaldehyde examination circuit
In be connected with operational amplifier Q1.
5. a kind of portable formaldehyde examination terminal described in -4 any items according to claim 1, it is characterised in that: it is described
Microcontroller is connected with display circuit.
6. a kind of portable formaldehyde examination terminal according to claim 5, it is characterised in that: the display circuit passes through
8 parallel-by-bit interfaces are connected with microcontroller I/O interface.
7. a kind of portable formaldehyde examination terminal according to claim 6, it is characterised in that: in the data processing circuit
Microcontroller is using MSP430F149 chip；In the formaldehyde examination circuit formaldehyde acquisition chip using
LTC1049, in the 4G telecommunication circuit 4G communication chip using USR-LTE-7S4, the display circuit using
LCD12864。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822217642.3U CN209432783U (en) | 2018-12-27 | 2018-12-27 | A kind of portable formaldehyde examination terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822217642.3U CN209432783U (en) | 2018-12-27 | 2018-12-27 | A kind of portable formaldehyde examination terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209432783U true CN209432783U (en) | 2019-09-24 |
Family
ID=67974024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822217642.3U Expired - Fee Related CN209432783U (en) | 2018-12-27 | 2018-12-27 | A kind of portable formaldehyde examination terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209432783U (en) |
-
2018
- 2018-12-27 CN CN201822217642.3U patent/CN209432783U/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 |
Granted publication date: 20190924 Termination date: 20201227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |