CN109029561A - A kind of ambient temperature and humidity and VOC multi-parameter monitor terminal on-line - Google Patents
A kind of ambient temperature and humidity and VOC multi-parameter monitor terminal on-line Download PDFInfo
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- CN109029561A CN109029561A CN201810734493.XA CN201810734493A CN109029561A CN 109029561 A CN109029561 A CN 109029561A CN 201810734493 A CN201810734493 A CN 201810734493A CN 109029561 A CN109029561 A CN 109029561A
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- 238000004891 communication Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 48
- 238000013500 data storage Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 9
- 238000007726 management method Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 210000000352 storage cell Anatomy 0.000 claims description 6
- 210000004027 cell Anatomy 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims 1
- 230000002463 transducing effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 19
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 235000015429 Mirabilis expansa Nutrition 0.000 description 1
- 244000294411 Mirabilis expansa Species 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000013536 miso Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses a kind of ambient temperature and humidities and VOC multi-parameter to monitor terminal on-line, its under bad working environments outdoors temperature and humidity and VOC multi-parameter monitoring terminal it is short there are cruise duration, wireless communication distance is short, clock system drift, degree of protection is low, constructional difficulties, the problems such as O&M cost height, monitoring application under the environment of bad working environments outdoors made, it is long with cruise duration, wireless communication distance is long, clock system is stablized, data transmission is stablized, degree of protection is high, it is convenient to construct, the ambient temperature and humidity and VOC multi-parameter for the beneficial effects such as O&M is cheap monitor terminal on-line.
Description
Technical field
The present invention relates to field of wireless communication more particularly to a kind of ambient temperature and humidities and VOC multi-parameter to monitor terminal on-line.
Background technique
In recent years, the fast development of smart city effectively pushes striding greatly for environmental monitoring cause to stride forward.Atmosphere And Humidity
The parameter monitorings such as degree and VOC are indexs more important in environmental monitoring, so far, the environment temperature based on wireless communication technique
Humidity and VOC multi-parameter on-line monitoring terminal are much, but most equipment therein belongs to common apparatus, and environment adapts to energy
Power is relatively limited.According to statistics, using under bad working environments outdoors temperature and humidity and VOC multi-parameter monitoring terminal there are cruise duration
The problems such as short, wireless communication distance is short, clock system drifts about, degree of protection is low, constructional difficulties, O&M cost height.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of ambient temperature and humidity and VOC multi-parameter on-line monitoring terminal.
The present invention provides a kind of ambient temperature and humidity and VOC multi-parameter on-line monitoring terminal, including
Central processing unit: for self-organizing network, self- recoverage network, clock be synchronous, temperature and humidity and VOC data sampling and
Calculating, radio-frequency communication, data storage, data transmission and covering, control instruction execute, state machine switching and low-power consumption are realized；
Clock Managing Unit: it includes real-time clock module and its peripheral processes circuit；Central processing unit reads clock
The related register of module obtains system clock；Time data are written periodically from father node acquisition time for central processing unit
The register cell of clock module, with prover time；
Temperature-humidity signal acquisition unit: it includes Temperature Humidity Sensor and sampled signal conditioning circuit；Central processing unit is fixed
Phase obtains ambient temperature and humidity data from the unit, and completes sampled data calculating；
VOC signal acquisition unit: it includes VOC sensor and sampled signal conditioning circuit；Central processing unit is periodically from this
Unit obtains environment VOC monitoring data, and completes sampled data calculating；
Radio-frequency communication unit: it includes radio-frequency transmitter, radio frequency sending set and radiofrequency signal conditioning circuit；Central processing unit
The data interaction with exterior terminals such as gateways is completed by the unit, includes data transmission and data receiver；
Data storage cell: it includes data memory module and its peripheral processes circuit；Central processing unit can be from the list
Member reads data, can also write data into the unit；
Power-supply management system: electric power is provided for each unit；
The central processing unit and the Clock Managing Unit, temperature-humidity signal acquisition unit, VOC signal acquisition list
Member, radio-frequency communication unit, data storage element are electrically connected to form electrical circuit.
The central processing unit is MCU.
The model MSP430F5438A of the central processing unit.
The model DS3231 of the real-time clock module.
The model SHT15 of the Temperature Humidity Sensor.
The model of the VOC sensor are as follows: MAQ400A.
The model SX1276 of the radio-frequency communication receiver, radio-frequency transmitter.
The model AT24CM01 of the data memory module.
Compared with the relevant technologies, the invention has the following advantages:
1, present invention employs low-power consumption processing technique, central processing unit, which can control, to be connected with power-supply management system
All units, so that temperature and humidity and VOC multi-parameter is monitored terminal on-line can only be continued a journey 2 years or more with battery power supply.
2, present invention employs LORA mechanicss of communication, are integrated with the Protocol of Wireless Snesor Network of customization, make warm and humid
Degree and VOC multi-parameter on-line monitoring terminal can carry out stable bidirectional wireless communication with the gateway outside 10 kilometers.
3, present invention employs real-time clock collimation techniques, and temperature and humidity and VOC multi-parameter is made to monitor the real-time of terminal on-line
Clock is synchronous with Network Time Protocol server holding.
4, present invention employs power down non-volatile data memory technologies, and temperature and humidity and VOC multi-parameter can be made to monitor on-line eventually
End keeps the continuity of data under extreme conditions.
5, shell structure of the invention use increases material manufacturing technology, Rainproof moisture-proof, can make its degree of protection reach IP67 with
On.
Detailed description of the invention
Fig. 1 is connection relationship diagram of the invention.
Specific embodiment
Below in conjunction with drawings and embodiments, the invention will be further described.
The monitoring terminal includes that central processing unit, Clock Managing Unit, temperature-humidity signal acquisition unit, VOC signal are adopted
Collect unit, radio-frequency communication unit, data storage cell and power-supply management system.
For convenient for style of writing description, central processing unit is with MSP430F5438A for preferred object, but technology described in this patent is several
It is suitable for all microprocessors.
Central processing unit mainly completes following work: self-organizing network, self- recoverage network, clock synchronization, warm and humid degree
According to sampling and calculating, radio-frequency communication, data storage, data transmission and covering, control instruction execution, state machine switching and low-power consumption
It realizes.
Self-organization network technology is told somebody what one's real intentions are.After monitoring terminal booting, set by sending the father nodes such as broadcast singal searching gateway
It is standby, after receiving father node response, it is considered as self-organizing network success；Otherwise, it should continue searching, until being successfully joined network.
Self- recoverage network technology is told somebody what one's real intentions are.After monitoring terminal data transmission failure, it is considered as disconnection network, needs to restore again,
It monitors terminal retransmission broadcast singal and finds the father nodes equipment such as gateway, after receiving father node response, be considered as self- recoverage network
Success；Otherwise, it should continue searching, until successfully restoring network.
Data transmission and covering are confided a technological secret.After monitoring terminal data transmission failure, this data for sending failure is write
Enter in the corresponding address of nonvolatile storage；It is sent to father node after monitoring terminal net network restores, then by the data of storage, together
When, delete the data in raw address.
Control instruction execution is confided a technological secret.After monitoring terminal enters operating conditions from dormant state, it can send and shake hands to father node
Signal, if obtaining order instruction, is started to receive and executes order with the instruction of query caching.
Clock Managing Unit includes real-time clock module and peripheral processes circuit connected to it.
Clock Managing Unit is confided a technological secret.Central processing unit is connected with Clock management module (DS3231) by iic bus.
The SCL connection of the GPIO P8.7 and DS3231 of central processing unit, the SDA connection of GPIO P8.6 and DS3231, the two interfaces
On configure the pull-up resistor of 10K Ω, supply voltage 3.3V.Central processing unit reads the phase of clock module by iic bus
Register is closed, system clock is obtained；Central processing unit periodically from the father nodes acquisition time such as gateway, and by time data be written when
The register cell of clock module, with prover time.
Temperature-humidity signal acquisition unit includes Temperature Humidity Sensor and sampled signal conditioning circuit.
Temperature-humidity signal acquisition unit is confided a technological secret.Central processing unit periodically obtains environment from temperature-humidity signal acquisition unit
Data of the Temperature and Humidity module, and complete sampled data calculating.Central processing unit is connected with Temperature Humidity Sensor (SHT15) by iic bus.
The SCL connection of the GPIO P5.4 and SHT15 of central processing unit, the SDA connection of GPIO P3.7 and SHT15, on the two interfaces
Configure the pull-up resistor of 10K Ω, supply voltage 3.3V.
VOC signal acquisition unit includes VOC sensor and sampled signal conditioning circuit.
VOC signal acquisition unit is confided a technological secret.Central processing unit periodically obtains environment VOC number from VOC signal acquisition unit
According to, and complete sampled data calculating.Central processing unit is connected with VOC sensor (MAQ400A) by UART bus.Central processing
The RXD connection of the TXD connection of the U5_RX and MAQ400A of device, U5_TX and MAQ400A, supply voltage 5V.
Radio-frequency communication unit includes radio-frequency transmitter, radio frequency sending set and radiofrequency signal conditioning circuit.
Radio-frequency communication monotechnics is told somebody what one's real intentions are.Radio-frequency communication unit has unique address, in this way, the prison of multiple and different addresses
Surveying terminal can work in the same communication channel；Central processing unit realizes the exterior terminals such as itself and gateway by the unit
Data interaction includes data transmission and data receiver.Central processing unit is connected with radio-frequency module (SX1276) by spi bus.
The transmission control pin connection of the GPIO P2.1 and SX1276 of central processing unit, are in transmission state for controlling SX1276；
The reception control pin connection of GPIO P2.2 and SX1276, are in reception state for controlling SX1276；GPIO P2.3 with
The reset control pin connection of SX1276, resets for controlling SX1276；The GP0 pin of GPIO P2.4 and SX1276 connect, when
When radio frequency reception is to data, processor can enter interrupt status, receive data；The SCK pin of GPIO P3.3 and SX1276
Connection is used for synchronised clock；The MISO pin of GPIO P3.2 and SX1276 connect, the MOSI pin of GPIO P3.1 and SX1276
Connection is used for data exchange.
Data storage cell includes data memory module and its peripheral processes circuit.
Data storage cell is confided a technological secret.Central processing unit can also write data into from the unit reads data
The unit, the unit have power down non-volatile characteristic, and after monitoring terminal switch machine, original storing data will not lose.Centre
Reason device is connected with data memory module (AT24CM01) by iic bus.The GPIO P10.2 and AT24CM01 of central processing unit
SCL connection, the SDA connection of GPIO P10.1 and AT24CM01 configures the pull-up resistor of 10K Ω on the two interfaces, supplies
Piezoelectric voltage is 3.3V.Central processing unit reads the related register of data memory module by iic bus, empty from specified address
Between obtain data；The address space that initialization information and sampled data write-in can also be specified.
Power-supply management system is adopted with central processing unit, Clock Managing Unit, temperature-humidity signal acquisition unit, VOC signal
Collection unit, radio-frequency communication unit, data storage cell are connected.
Power-supply management system is confided a technological secret.By power-supply management system, central processing unit can flexible switching state machine, into
Enter working condition or dormant state, to reduce the power consumption of whole system.Central processing unit is switched to work from dormant state
After state, firstly, the power-supply system of temperature-humidity signal acquisition unit, VOC signal acquisition unit can be opened successively, sampling is finished
Afterwards, its power-supply system is closed；Secondly, the power-supply system of radio-frequency communication unit can be opened, after data interaction, the electricity is closed
Source system；Then, suspend mode is entered back into.The switching of above-mentioned state machine in cycles, in a dormant state because of the most of the time,
Therefore cruise duration can be greatly prolonged.
Central processing unit controls the power supply of SHT15 by GPIO P4.5, and at the beginning of sampling, GPIO P4.5 output is high
Level powers on for SHT15；After sampling, GPIOP4.5 exports low level, powers off for SHT15.Central processing unit passes through GPIO
P4.3 controls the power supply of MAQ400A, and at the beginning of sampling, GPIO P4.3 exports high level, powers on for MAQ400A；Sampling knot
Shu Hou, GPIO P4.3 export low level, power off for MAQ400A.The signal of the GPIO P4.7 and SX1276 of central processing unit are sent out
Amplifier port is penetrated to be connected.When data emit, GPIO P4.7 output is high level, emitting voltage can be increased to 5V, together
When, SX1276 radio-frequency emission power average power consumption is up to 150mA；When terminal sleeping, GPIO P4.7 output is low level,
The signal transmitting amplifying circuit power supply of SX1276 is cut off, and SX1276 dormancy power consumption only has 2 μ A.
Monitor terminal sampling period, average power consumption substantially 20mA；T-time, average power consumption substantially 160mA；Suspend mode
Before, central processing unit handles GPIO pin configuration one by one, enters back into low-power consumption mode (LPM3), average power consumption can be dropped to 10
μ A or so.Accordingly, when monitoring the terminal sampling period is ten minutes, the battery of the 10Ah of configuration for its continue a journey 2 years with
On.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of ambient temperature and humidity and VOC multi-parameter monitor terminal on-line, it is characterised in that: including
Central processing unit: by self-organizing network, self- recoverage network, clock be synchronous, temperature and humidity and VOC data sampling and based on
Calculation, radio-frequency communication, data storage, data transmission and covering, control instruction execute, state machine switching and low-power consumption are realized；
Clock Managing Unit: it includes real-time clock module and its peripheral processes circuit；Central processing unit reads clock module
Related register, obtain system clock；Central processing unit is periodically from father node acquisition time, and by time data write clock
The register cell of module, with prover time；
Temperature-humidity signal acquisition unit: it includes Temperature Humidity Sensor and sampled signal conditioning circuit；Central processing unit periodically from
The unit obtains ambient temperature and humidity data, and completes sampled data calculating；
VOC signal acquisition unit: it includes VOC sensor and sampled signal conditioning circuit；Central processing unit is periodically from the unit
VOC data are obtained, and complete sampled data calculating；
Radio-frequency communication unit: it includes radio-frequency transmitter, radio frequency sending set and radiofrequency signal conditioning circuit；Central processing unit passes through
The unit completes the data interaction with exterior terminals such as gateways, includes data transmission and data receiver；
Data storage cell: it includes data memory module and its peripheral processes circuit；Central processing unit can be read from the unit
Access evidence, can also write data into the unit；
Power-supply management system: electric power is provided for each unit；
The central processing unit and the Clock Managing Unit, transducing signal acquisition unit, radio-frequency communication unit, data are stored up
Memory cell is electrically connected to form electrical circuit.
2. a kind of ambient temperature and humidity as described in claim 1 and VOC multi-parameter monitor terminal on-line, it is characterised in that: described
Central processing unit is MCU.
3. a kind of ambient temperature and humidity as claimed in claim 2 and VOC multi-parameter monitor terminal on-line, it is characterised in that: described
The model MSP430F5438A of central processing unit.
4. a kind of ambient temperature and humidity as described in claim 1 and VOC multi-parameter monitor terminal on-line, it is characterised in that: described
The model DS3231 of real-time clock module.
5. a kind of ambient temperature and humidity as described in claim 1 and VOC multi-parameter monitor terminal on-line, it is characterised in that: described
The model MAQ400A of model SHT15, the VOC sensor of Temperature Humidity Sensor.
6. a kind of ambient temperature and humidity as described in claim 1 and VOC multi-parameter monitor terminal on-line, it is characterised in that: described
The model SX1276 of radio-frequency communication receiver, radio-frequency transmitter.
7. a kind of ambient temperature and humidity as described in claim 1 and VOC multi-parameter monitor terminal on-line, it is characterised in that: described
The model AT24CM01 of data memory module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734493.XA CN109029561A (en) | 2018-07-06 | 2018-07-06 | A kind of ambient temperature and humidity and VOC multi-parameter monitor terminal on-line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810734493.XA CN109029561A (en) | 2018-07-06 | 2018-07-06 | A kind of ambient temperature and humidity and VOC multi-parameter monitor terminal on-line |
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| CN109029561A true CN109029561A (en) | 2018-12-18 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205193459U (en) * | 2015-10-26 | 2016-04-27 | 飞亚达（集团）股份有限公司 | Time synchronization device |
| CN206430751U (en) * | 2016-09-30 | 2017-08-22 | 陕西省考古研究院 | A kind of damp-proof Atmosphere temp.and RH and CO2 monitoring terminals |
-
2018
- 2018-07-06 CN CN201810734493.XA patent/CN109029561A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205193459U (en) * | 2015-10-26 | 2016-04-27 | 飞亚达（集团）股份有限公司 | Time synchronization device |
| CN206430751U (en) * | 2016-09-30 | 2017-08-22 | 陕西省考古研究院 | A kind of damp-proof Atmosphere temp.and RH and CO2 monitoring terminals |
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Application publication date: 20181218 |
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