CN209387145U - A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device - Google Patents
A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device Download PDFInfo
- Publication number
- CN209387145U CN209387145U CN201822041173.4U CN201822041173U CN209387145U CN 209387145 U CN209387145 U CN 209387145U CN 201822041173 U CN201822041173 U CN 201822041173U CN 209387145 U CN209387145 U CN 209387145U
- Authority
- CN
- China
- Prior art keywords
- module
- temperature
- signal
- circuit
- temperature sensor
- 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.)
- Expired - Fee Related
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
It plunges into the commercial sea amount temperature point on-Line Monitor Device the utility model discloses a kind of low temperature background, on-Line Monitor Device includes temperature collecting module, signal transmission module, signal conditioning module, main control unit and power supply module；Temperature collecting module includes temperature sensor of several scattering devices in soil to be detected；Signal transmission module includes modulation circuit, carrier-frequency circuit and the demodulator circuit being sequentially connected；Signal conditioning module includes analog switch module, conditioning circuit and modulus conversion chip；Main control unit includes microcontroller, memory module, GPRS remote transmission module and USB module.When work, temperature collecting module acquisition signal is simultaneously transmitted, main control unit controls analog switch module and converts serial signal for the temperature signal of parallel each temperature sensor according to predetermined temperature sorting sensor, digital information after modulus conversion chip is converted is stored to memory module, and is controlled GPRS remote transmission module and sent it to host computer.
Description
Technical field
The utility model relates to thermosensitive resistance measurement technical field under low temperature environment, magnanimity under especially a kind of low temperature environment
Temperature spot on-Line Monitor Device.
Background technique
Temperature monitoring is the important technology field that current many requirement of engineering are related to and the Xian Xing Ministry of Railways in road construction
With the important construction quotas of development, especially developing the Northwest with greater need for construction road, but the Northwest such as highlands
There are larger difference in soil property environment and plains region, and colder regional aqueous soil mutability is at frozen soil region, due to the stream of frozen soil
Denaturation, construction project road easily causes frost heave and thaw collapse above herein, it is therefore desirable to a large amount of temperature sensing is placed under soil
Device measurement temperature judges soil property situation, so as to engineering construction.When measurement points are more, such as reach several hundred a points or thousands of
When point, the complexity of measuring circuit is reduced, improving Measurement reliability is the target that current scientific worker pursues always.
Traditional multichannel temperature point measurement is based primarily upon microcontroller, if measurement temperature spot is digital signal, directly connects
The input/output port for connecing microcontroller carries out data processing, if analog signal, first converts digital signal for each point, then with it is micro-
Controller is connected, and the quantity for being limited in that observable temperature point of this method and the general input/output port of microcontroller have
It closes, is only applicable to the points measurement of passage aisle quantity；Traditional a large amount of temperature spot telemeasurements, a temperature spot output are believed all the way
Number, therefore several hundred or thousands of signal wire output signals are needed if several hundred or thousands of a measurement points, increase the body of equipment
Product, integrated level reduce and improve the degree of difficulty of plant maintenance.
Utility model content
Technical problem to be solved in the utility model is provided a kind of low for defect involved in background technique
Warm environment is plunged into the commercial sea amount temperature point on-Line Monitor Device.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of low temperature environment is plunged into the commercial sea amount temperature point on-Line Monitor Device, includes temperature collecting module, signal transmission module, letter
Number conditioning module, main control unit and power supply module.
The temperature collecting module includes temperature sensor of several scattering devices in soil to be detected；The temperature passes
Sensor is used to incude the temperature of its location soil, and passes it to the signal transmission module.
The signal transmission module includes modulation circuit, carrier-frequency circuit and the demodulator circuit being sequentially connected；
The modulation circuit is connected with each temperature sensor respectively, for by the temperature signal one of each temperature sensor
In the one corresponding each preset carrier frequency being adjusted on information transmission broadband, it is integrated into transmission signal, and will integration
At transmission signal pass to the carrier-frequency circuit；
The carrier-frequency circuit is used to the transmission signal being integrated into being sent to demodulator circuit by modulation circuit；
The demodulator circuit be used for will be integrated into transmission signal be demodulated to each temperature sensor temperature signal and by its
The signal conditioning module is passed to parallel.
The signal conditioning module includes analog switch module, conditioning circuit and modulus conversion chip；
The input terminal of the analog switch module is connected with the demodulator circuit, and output end passes through the conditioning circuit and institute
The input terminal for stating modulus conversion chip is connected, and control terminal is connected with the main control unit；Analog switch module is used for according to master control
The instruction of unit converts the temperature signal of parallel each temperature sensor to according to predetermined temperature sorting sensor
Serial signal, and pass it to the conditioning circuit；
The serial signal conditioning that the conditioning circuit is used to input is in the modulus conversion chip analog-to-digital conversion range
After interior analog signal, the modulus conversion chip is passed it to；
The modulus conversion chip is used to convert the analog signal that conditioning circuit exports to corresponding digital information, and will
It passes to the main control unit；
The main control unit includes microcontroller, memory module, GPRS remote transmission module and USB module；
The microcontroller respectively with memory module, GPRS remote transmission module, USB module, analog switch modular electrical
It is connected, for controlling analog switch module according to predetermined temperature sorting sensor for parallel each temperature sensor
Temperature signal is converted into serial signal, and the digital information after modulus conversion chip is converted is stored to memory module, and is controlled
GPRS remote transmission module modulus conversion chip is converted after the i.e. each temperature sensor of digital information temperature information send
To host computer；
Temperature information of the USB module for each temperature sensor in manual download storage module.
It plunges into the commercial sea the further prioritization scheme of amount temperature point on-Line Monitor Device as a kind of low temperature environment of the utility model, institute
Temperature sensor is stated using thermistor.
It plunges into the commercial sea the further prioritization scheme of amount temperature point on-Line Monitor Device as a kind of low temperature environment of the utility model, institute
Power supply module is stated using solar panels.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
When the transmission bandwidth of signal wire is larger, a transmission signal line reality can be only used by designing different carrier-frequency circuits
The monitoring of existing multiple temperature points, reduces the complexity of monitoring device, the integrated level of enhancement device, greatly reduce device at
This；Solar energy and the double charging modules of battery, can automatically provide power supply in the state that guarantee is unattended；A large amount of points monitorings
So that data are more comprehensively and reliable；Device has separately set USB interface other than remote transmission function, avoids remote transmission bring
Loss of data improves the reliability of device；Host computer procedure calculates the degree of variation of various discrete temperature spot, identifies more wave zones
Domain band shows frozen soil region, will extract data and analysis data combine, so that device is more intelligent.
Detailed description of the invention
Fig. 1 shows that a kind of low temperature background of the utility model is plunged into the commercial sea the general frame of amount temperature point on-Line Monitor Device；
Fig. 2 shows a kind of temperature spot schematic layout pattern of the utility model；
Fig. 3 shows a kind of road the single line Zhong Ge signal spectrum schematic diagram of the utility model.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
As shown in Figure 1, plunging into the commercial sea amount temperature point on-Line Monitor Device the utility model discloses a kind of low temperature environment, include temperature
Spend acquisition module, signal transmission module, signal conditioning module, main control unit and power supply module.
Temperature collecting module: comprising temperature sensor of several scattering devices in soil to be detected, temperature sensor is adopted
With two-wire system thermistor temperature sensor, both ends are shared, one end connects AD7793 (the analog-to-digital conversion core in signal conditioning module
Piece) output drive electric current source, the other end as temperature collection voltage signal export, the modulation of connection signal transmission module
Device.Temperature acquisition schematic layout pattern is as shown in Figure 2.
Signal transmission module: including modulation circuit, carrier-frequency circuit and demodulator circuit.It is biggish in the bandwidth of a signal wire
Under the premise of, change the frequency of each signal, carried out frequency spectrum shift, makes it possible to transmit on a signal wire, in addition to
Interfering with each other for each signal is avoided, then has certain frequency band between signal and signal in vain and does not use, reaches a signal wire and passes
The purpose of defeated a plurality of signal.Signal first passes through low-pass filter, limits highest frequency, then by modulator and carrier multiplication, no
With signal it needs to be determined that different carrier wave, carrier wave fcDetermine that method is as follows: the oscillator initial oscillation frequency that carrier wave occurs is
F0, the empty band bandwidth between the temperature signal of adjacent temperature sensor is fIt is empty, share n channel, i.e. n single-side belt (top
Band or lower sideband, are multiplied to obtain by transmission signal with carrier-frequency circuit), it is F that transmission signal, which occupies total frequency band,Always(the signal of selection
The bandwidth of line is B, B > FAlways), the standard bandwidth of the road Ze Mei signal are as follows:
The road-load wave frequency rate of m are as follows:
fcm=F0+(FMark+fIt is empty)(n-m)
Determine the frequency spectrum shift that signal is carried out after each carrier signal, frequency spectrum f of the road the m signal in single-signal-line1~fmSignal
Figure is as shown in Figure 3.
Signal conditioning module: including analog switch module, conditioning circuit and modulus conversion chip.The signal demodulated passes through
Analog switch module, analog switch selection can be by the biggish signal of electric signal range, if the original signal demodulated is not in mould
In the range of quasi- switch can be by signal, operational amplifier need to be added after demodulator, signal is controlled can lead in analog switch
In the range of crossing.When number of signals is more, analog switch is connected with decoder, and the output pin of decoder connects each simulation
The enable end of switch, the control terminal of decoder and the address end of analog switch and the signal input/output port of main control unit are connected
It connects, the input terminal by controlling decoder selects the analog switch of work, controls the address end selection output selection of analog switch
Signal all the way can increase the quantity of decoder and the quantity of analog switch therewith with the increase of number of signals.Signal from
After analog switch module is sequentially output, by conditioning circuit, conditioning circuit is mainly made of operational amplifier, adjusts operation amplifier
The resistance value of device changes the range of signal of output, guarantees signal in the conversion voltage range of digital analog converter (ADC).The dress
The digital analog converter using 24 AD7793 models is set, converts voltage as 0~5V, built-in excitation current source can be temperature-sensitive electricity
Resistance provides current source, output voltage signal.
Main control unit: including microcontroller, memory module, GPRS remote transmission module and USB module；Microcontroller difference
It is connected with memory module, GPRS remote transmission module, USB module, analog switch modular electrical, for controlling analog switch module
Serial signal is converted by the temperature signal of parallel each temperature sensor according to predetermined temperature sorting sensor, it will
Digital information after modulus conversion chip conversion is stored to memory module, and controls GPRS remote transmission module for analog-to-digital conversion core
Digital information, that is, each temperature sensor temperature information after piece conversion is sent to host computer；USB module for downloading manually
The temperature information of each temperature sensor in memory module.
Solar powered module: directlying adopt existing solar panels collecting energy on the market, and power supply uses 1 piece of 6V, 2W
Solar panel directly pass through the 4055 lithium battery chargings being together in parallel to two pieces, open output switch, lithium battery passes through
The booster circuit of MC34063CD composition is raised to 5V, exports 5V voltage.
Host computer is discrete data with 1 year data value of a sensor, by calculating the variance yields of an annual data,
The fluctuating range of data is acquired, frozen soil region is analyzed with this.M sensor measures 1 year temperature data value and is denoted as T1,
T2..., Tm-1, Tm, mean value am(t), then t is denoted as D for departure degree, that is, variance of mean value to random temperature point at various moments
[Tm(t)],
D[Tm(t)]=E { [Tm(t)-am(t)]2}
The variance yields for surveying 1 year temperature spot of each sensor to device carries out bubbling operation, and it is biggish to select variance yields
Point calculates it corresponding temperature according to the characteristic of the various frozen soil such as temperature changes such as permafrost soil, frost zone and short-term frozen soil
Degree fluctuation threshold obtains the soil property type in temperature measurement device point region by threshold value compared with variance yields.
It plunges into the commercial sea the single wire transmission side of amount temperature point on-Line Monitor Device the invention also discloses one kind low temperature environment
Method comprising the steps of:
Step 1), enabling the quantity of temperature sensor is n, and transmission channel bandwidth B, preset transmission signal occupies total
Frequency band is FAlways, the empty band bandwidth between the temperature signal of preset adjacent temperature sensor is fIt is empty, B > FAlways；
Bandwidth F shared by the temperature signal of each temperature sensor is calculated according to the following formulaMark:
Step 2), according to bandwidth F shared by the temperature signal of each temperature sensorMark, adjacent temperature sensor temperature
Empty band bandwidth f between signalIt is empty, occur carrier wave oscillator initial oscillation frequency F0It is corresponding to calculate each temperature sensor
Carrier frequency:
fcm=F0+(FMark+fIt is empty)(n-m)
In formula, fcmFor the carrier frequency of m-th of temperature sensor temperature information；
Step 3) is carried out according to temperature information of the corresponding carrier frequency of each temperature sensor to each temperature sensor
Modulation, is integrated into transmission signal；
The transmission signal being integrated into is passed to carrier-frequency circuit, the biography that carrier-frequency circuit will be integrated by step 4), modulation circuit
Defeated signal is sent to demodulator circuit by modulation circuit.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (3)
- The amount temperature point on-Line Monitor Device 1. a kind of low temperature background is plunged into the commercial sea, which is characterized in that passed comprising temperature collecting module, signal Defeated module, signal conditioning module, main control unit and power supply module；The temperature collecting module includes temperature sensor of several scattering devices in soil to be detected；The temperature sensor For incuding the temperature of its location soil, and pass it to the signal transmission module；The signal transmission module includes modulation circuit, carrier-frequency circuit and the demodulator circuit being sequentially connected；The modulation circuit is connected with each temperature sensor respectively, for the temperature signal one of each temperature sensor is a pair of In each preset carrier frequency that should be adjusted on information transmission broadband, it is integrated into transmission signal, and will be integrated into Transmission signal passes to the carrier-frequency circuit；The carrier-frequency circuit is used to the transmission signal being integrated into being sent to demodulator circuit by modulation circuit；The demodulator circuit is used to be integrated into transmission signal and is demodulated to the temperature signal of each temperature sensor and it is parallel Pass to the signal conditioning module；The signal conditioning module includes analog switch module, conditioning circuit and modulus conversion chip；The input terminal of the analog switch module is connected with the demodulator circuit, and output end passes through the conditioning circuit and the mould The input terminal of number conversion chip is connected, and control terminal is connected with the main control unit；Analog switch module is used for according to main control unit Instruction convert the temperature signal of parallel each temperature sensor to serially according to predetermined temperature sorting sensor Signal, and pass it to the conditioning circuit；The serial signal conditioning that the conditioning circuit is used to input is within the scope of the modulus conversion chip analog-to-digital conversion After analog signal, the modulus conversion chip is passed it to；The modulus conversion chip is used to convert corresponding digital information for the analog signal that conditioning circuit exports, and is passed Pass the main control unit；The main control unit includes microcontroller, memory module, GPRS remote transmission module and USB module；The microcontroller is connected with memory module, GPRS remote transmission module, USB module, analog switch modular electrical respectively, For controlling analog switch module according to predetermined temperature sorting sensor for the temperature of parallel each temperature sensor Signal is converted into serial signal, and the digital information after modulus conversion chip is converted is stored to memory module, and it is remote to control GPRS Journey transmission module modulus conversion chip is converted after the i.e. each temperature sensor of digital information temperature information be sent to it is upper Machine；Temperature information of the USB module for each temperature sensor in manual download storage module.
- The amount temperature point on-Line Monitor Device 2. low temperature background according to claim 1 is plunged into the commercial sea, which is characterized in that the temperature Sensor uses thermistor.
- The amount temperature point on-Line Monitor Device 3. low temperature background according to claim 1 is plunged into the commercial sea, which is characterized in that the power supply Module uses solar panels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822041173.4U CN209387145U (en) | 2018-12-06 | 2018-12-06 | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822041173.4U CN209387145U (en) | 2018-12-06 | 2018-12-06 | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209387145U true CN209387145U (en) | 2019-09-13 |
Family
ID=67870838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822041173.4U Expired - Fee Related CN209387145U (en) | 2018-12-06 | 2018-12-06 | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209387145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459151A (en) * | 2018-12-06 | 2019-03-12 | 南京信息工程大学 | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device and method |
-
2018
- 2018-12-06 CN CN201822041173.4U patent/CN209387145U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459151A (en) * | 2018-12-06 | 2019-03-12 | 南京信息工程大学 | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device and method |
| CN109459151B (en) * | 2018-12-06 | 2024-02-20 | 南京信息工程大学 | Device and method for monitoring mass temperature points on line under low-temperature background |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109459151A (en) | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device and method | |
| Li et al. | Practical deployment of an in-field soil property wireless sensor network | |
| Nath et al. | IoT based system for continuous measurement and monitoring of temperature, soil moisture and relative humidity | |
| CN209387145U (en) | A kind of low temperature background is plunged into the commercial sea amount temperature point on-Line Monitor Device | |
| CN205353342U (en) | Single -phase carrier wave smart electric meter communication module interface load bearing capability tester | |
| CN108593130A (en) | One kind being suitable for a large amount of unmanned monitoring systems of frozen soils temperature point in plateau | |
| CN111174833A (en) | Data acquisition device for plant bioelectricity and moisture transmission parameters | |
| CN203759570U (en) | Intelligent control apparatus for greenhouse | |
| CN103438937B (en) | The device that a kind of live standing tree electric energy and environmental parameter thereof are measured | |
| CN105607678B (en) | A kind of intelligent electric kettle and its control system and method | |
| CN108513275A (en) | A kind of Zigbee wireless sensing nodes that live indicating meter is coupled | |
| Kumar et al. | Design of real time data acquisition with multi node embedded systems | |
| CN107707276B (en) | Power consumption detection device based on broadband power line carrier communication unit | |
| CN206132853U (en) | Aerogenerator ground net on -line monitoring early warning device | |
| CN109283415A (en) | A kind of grid voltage sags failure simulation device and its control method | |
| CN205718833U (en) | A kind of Structural Engineering safety automation monitoring system | |
| CN104019869B (en) | The wireless automatic calibrator of fuel charger capacity of vacuum heat-preserving standard capacity measure | |
| CN203673059U (en) | Three-phase electric energy meter simulation system | |
| CN203132723U (en) | Wireless integrated temperature transmitter | |
| CN202092795U (en) | Wireless temperature measuring probe device | |
| CN205681413U (en) | Split-type mini multifunctional concrete temperature intelligent online monitoring system RS 485 telecommunication circuit | |
| CN208672820U (en) | Meteorological data monitoring device based on wireless network | |
| CN211877094U (en) | Data acquisition device for plant bioelectricity and moisture transmission parameters | |
| CN206788274U (en) | A kind of JXG 50S types phase-sensitive track circuits receiver testboard | |
| CN208595982U (en) | One kind being suitable for the unmanned Long-term Monitoring Systems of a large amount of frozen soils temperature points in plateau |
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: 20190913 Termination date: 20211206 |