CN106197730A - A kind of temperature frequency conversion equipment - Google Patents
A kind of temperature frequency conversion equipment Download PDFInfo
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- CN106197730A CN106197730A CN201610785811.6A CN201610785811A CN106197730A CN 106197730 A CN106197730 A CN 106197730A CN 201610785811 A CN201610785811 A CN 201610785811A CN 106197730 A CN106197730 A CN 106197730A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 17
- 238000010586 diagram Methods 0.000 description 12
- 230000005611 electricity Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
- G01K7/25—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit for modifying the output characteristic, e.g. linearising
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides a kind of temperature frequency conversion equipment, wherein, this device includes: temperature sensor, signal processor and the signal adapter being sequentially connected with；Temperature sensor is used for Real-time Collection temperature, generates the voltage signal corresponding with Current Temperatures, transmits voltage signal to signal processor；Signal processor, for voltage signal is amplified process, exports the voltage signal after amplifying；Signal adapter, for the voltage signal received is carried out frequency conversion, obtains the frequency signal corresponding with Current Temperatures, and exports this frequency signal.A kind of temperature frequency conversion equipment that the present invention provides, convert electrical signals into the frequency signal corresponding with temperature by signal adapter to be transmitted, achieve the monitoring to mine temperature, the transmitting procedure of frequency signal is not susceptible to the interference of Mine Complicated environment simultaneously, and then improves the efficiency of mine temperature monitoring.
Description
Technical field
The present invention relates to safety production technique field, in particular to a kind of temperature frequency conversion equipment.
Background technology
At present, along with mine the most in depth under, affected the most increasingly severe by underground heat.Many less than 500 meters ore deposits
Well maximum temperature reaches 40 degree, has a strong impact on health and the work efficiency of workman, and therefore, mine cooling work is increasingly closed
Note, the monitoring to mine temperature also becomes one of important measures ensureing mine safety production.Generally, temperature monitoring passes through temperature
Sensor realizes, and utilizes temperature sensor that temperature transition becomes the signal of telecommunication, and the signal of telecommunication is transferred to monitoring personnel, to reach
The effect of temperature monitoring, but, owing in mine, environment is special, simultaneously distant in mine, use signal of telecommunication transmission easily
Disturbed by Minepit environment, and then reduce the efficiency of temperature monitoring.
Easily disturbed by mine temperature for the above-mentioned method utilizing the signal of telecommunication to carry out monitoring mine temperature, thus cause temperature
Monitor inefficient problem, the most not yet propose effective solution.
Summary of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of temperature frequency conversion equipment, it is possible to effectively monitor
Temperature in mine, and reduce in signals transmission the annoyance level by Minepit environment, and then improve the effect of temperature monitoring
Rate.
Wherein, embodiments provide a kind of temperature frequency conversion equipment, including: the temperature sensing being sequentially connected with
Device, signal processor and signal adapter；Temperature sensor is for the temperature of Real-time Collection local environment, according to Current Temperatures
Adjust internal resistance, generate the voltage signal corresponding with Current Temperatures, voltage signal is transmitted to signal processor；Signal processor is used
In voltage signal being amplified process, the voltage signal after output amplification；Signal adapter is for the voltage letter received
Number carry out frequency conversion, obtain the frequency signal corresponding with Current Temperatures, output frequency signal.
The embodiment of the present invention additionally provides the embodiment that the first is possible, and wherein, said apparatus also includes: turn with signal
The photoelectrical coupler that the outfan of parallel operation connects, for the output of driving frequency signal by the way of photoelectric coupling.
The embodiment of the present invention additionally provides the embodiment that the second is possible, and wherein, said temperature sensor includes: measure
Electric bridge, for being gathered the temperature of local environment by critesistor, is adjusted the internal resistance of temperature sensor, generates according to Current Temperatures
The voltage signal corresponding with Current Temperatures, transmits voltage signal to signal processor.
In conjunction with the embodiment that the second is possible, the embodiment of the present invention additionally provides the embodiment that the third is possible, its
In, said temperature sensor also includes: the mu balanced circuit being connected with measuring bridge；This mu balanced circuit is temperature by voltage stabilizing chip
Sensor provides voltage-stabilizing protection.
The embodiment of the present invention additionally provides the 4th kind of possible embodiment, and wherein, above-mentioned signal processor is that difference is put
Big circuit.
The embodiment of the present invention additionally provides the 5th kind of possible embodiment, and wherein, above-mentioned signal adapter includes mutually
The output regulating circuitry connected and modular converter；Output regulating circuitry is for regulating the reference current of modular converter；Modular converter
For generating reference current according to extraneous supply voltage, and receive the voltage signal that signal processor exports, adjust according to output
Reference current after joint the regulation of electrical circuit and voltage signal, export the frequency signal corresponding with Current Temperatures.
In conjunction with the 5th kind of possible embodiment, the embodiment of the present invention additionally provides the 6th kind of possible embodiment, its
In, the input voltage range of above-mentioned signal adapter is: 0～5V；The frequency model of the frequency signal of above-mentioned signal adapter output
Enclosing is 200Hz～1000Hz.
The embodiment of the present invention additionally provides the 7th kind of possible embodiment, and wherein, said apparatus also includes: overvoltage protection
Circuit；This overvoltage crowbar is arranged at the outfan of signal processor and the input of signal adapter, for turning signal
Parallel operation provides overvoltage protection.
The embodiment of the present invention additionally provides the 8th kind of possible embodiment, and wherein, said apparatus also includes: power supply fills
Put, be used for providing supply voltage.
In conjunction with the 8th kind of possible embodiment, the embodiment of the present invention additionally provides the 9th kind of possible embodiment, its
In, the supply voltage of above-mentioned supply unit is 8V.
A kind of temperature frequency conversion equipment that the embodiment of the present invention provides, gathers the temperature of residing mine by temperature sensor
Degree, carries out processing and amplifying, and utilizes signal adapter to convert electrical signals into the frequency corresponding with temperature after changing into the signal of telecommunication
Signal is transmitted, it is achieved that the monitoring to mine temperature, and the transmitting procedure of frequency signal is not susceptible to Mine Complicated ring simultaneously
The interference in border, and then improve the efficiency of mine temperature monitoring.
For making the above-mentioned purpose of the present invention, feature and advantage to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below by embodiment required use attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, and it is right to be therefore not construed as
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to this
A little accompanying drawings obtain other relevant accompanying drawings.
Fig. 1 shows the structural representation of a kind of temperature frequency conversion equipment that the embodiment of the present invention provided；
Fig. 2 shows the concrete electricity of the temperature sensor of a kind of temperature frequency conversion equipment that the embodiment of the present invention provided
Road schematic diagram；
Fig. 3 shows the concrete electricity of the signal processor of a kind of temperature frequency conversion equipment that the embodiment of the present invention provided
Road schematic diagram；
Fig. 4 shows the concrete electricity of the signal adapter of a kind of temperature frequency conversion equipment that the embodiment of the present invention provided
Road schematic diagram；
Fig. 5 shows the physical circuit schematic diagram of a kind of temperature frequency conversion equipment that the embodiment of the present invention provided.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
Middle accompanying drawing, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
It is a part of embodiment of the present invention rather than whole embodiments.Generally real with the present invention illustrated described in accompanying drawing herein
The assembly executing example can be arranged with various different configurations and design.Therefore, below to the present invention's provided in the accompanying drawings
The detailed description of embodiment is not intended to limit the scope of claimed invention, but is merely representative of the selected reality of the present invention
Execute example.Based on embodiments of the invention, the institute that those skilled in the art are obtained on the premise of not making creative work
There are other embodiments, broadly fall into the scope of protection of the invention.
In view of when mine temperature is monitored by prior art, utilize temperature sensor that temperature transition is become the signal of telecommunication
During being transmitted, easily disturbed by special environment in mine, and then reduced the problem of the efficiency of temperature monitoring, the present invention
Embodiment provides a kind of temperature frequency conversion equipment, is described below by embodiment.
Embodiment 1
The structural representation of a kind of temperature frequency conversion equipment shown in Figure 1, including: the temperature sensing being sequentially connected with
Device 10, signal processor 12 and signal adapter 14；
Temperature sensor 10, for the temperature of Real-time Collection local environment, adjusts in temperature sensor according to Current Temperatures
Resistance, generates the voltage signal corresponding with Current Temperatures, transmits voltage signal to signal processor 12.
Signal processor 12, for voltage signal is amplified process, exports the voltage signal after amplifying, and by this electricity
Pressure signal transmits to signal adapter 14；Wherein, the signal processor 12 of the embodiment of the present invention is preferably differential amplifier circuit.
Signal adapter 14, for the voltage signal received is carried out frequency conversion, obtains the frequency corresponding with Current Temperatures
Rate signal, exports described frequency signal.
When implementing, said temperature sensor 10 includes: measuring bridge, for gathering local environment by critesistor
Temperature, according to Current Temperatures adjust temperature sensor internal resistance, generates the voltage signal corresponding with Current Temperatures, by voltage letter
Number transmission to signal processor 12；This temperature sensor 10 also includes: the mu balanced circuit being connected with measuring bridge；This mu balanced circuit
Voltage-stabilizing protection can be provided for temperature sensor 10 by voltage stabilizing chip.
When implementing, above-mentioned signal adapter 14 includes interconnective output regulating circuitry and modular converter；Wherein,
Output regulating circuitry is for regulating the reference current of modular converter；Modular converter is for generating benchmark according to extraneous supply voltage
Electric current, and receive the voltage signal of signal processor 12 output, the reference current after adjusting according to output regulating circuitry and voltage
Signal, exports the frequency signal corresponding with Current Temperatures.
Further, said temperature frequency conversion apparatus also includes: the light thermocouple being connected with the outfan of signal adapter 14
Clutch, for the output of driving frequency signal by the way of photoelectric coupling.
A kind of temperature frequency conversion equipment that the embodiment of the present invention provides, gathers the temperature of residing mine by temperature sensor
Degree, carries out processing and amplifying, and utilizes signal adapter to convert electrical signals into the frequency corresponding with temperature after changing into the signal of telecommunication
Signal is transmitted, it is achieved that the monitoring to mine temperature, and the transmission of frequency signal simultaneously is also not susceptible to Mine Complicated environment
Interference, and then improve mine temperature monitoring efficiency.
Fig. 2 shows the circuit theory diagrams of a kind of temperature sensor that the embodiment of the present invention provides, and wherein, P1 is temperature-sensitive electricity
Resistance, in the present embodiment, preferred device model is PT100 platinum resistance thermometer sensor, and its resistance Rpt is permissible with the relation of temperature t
It is expressed as:
(1)-200 degree Celsius < t < when 0, Rpt=100* [1+A*t+B*t2+C*t3*(t-100)]；
When (2) 0 < t < 850 degrees Celsius, Rpt=100* (1+A*t+B*t2)；
In above-mentioned formula, A=0.00390802；B=-0.000000580；C=0.0000000000042735.Visible
When PT100 changes between room temperature 0～100 degrees Celsius, the linearity is preferable, and its resistance expression formula can approximate and be reduced to: Rpt=100
(1+At), when variations in temperature 1 degree Celsius, PT100 resistance approximation change 0.39 Europe.In Fig. 2, critesistor P1, resistance R1, resistance
R2 and potentiometer VR2 forms measuring bridge, can be by the resistance of regulator potentiometer VR2, to the electricity being input to signal processor
Signal is adjusted, i.e. realize being adjusted the certainty of measurement of temperature sensor.In order to ensure that measuring bridge output voltage is believed
Number stability, the input voltage of measuring bridge carries out voltage-stabilizing protection, in Fig. 2 by the mu balanced circuit being connected with measuring bridge
Power supply VCC, resistance R8, potentiometer VR1 and source of stable pressure U6 form this mu balanced circuit, and wherein, power supply VCC is preferably 8V, source of stable pressure
U6 is preferably controllable accurate source of stable pressure TL431, can be by the stabilized input voltage of measuring bridge to 2.5V.
Fig. 3 shows the circuit theory diagrams of a kind of signal processor that the embodiment of the present invention provides, this signal processor
Physical circuit is preferably differential amplifier circuit, is realized the processing and amplifying process of the signal of telecommunication by differential amplifier circuit, wherein, on
The power supply VCC stating amplifying circuit is preferably 8V.V+ and V-is the differential signal obtained from measuring bridge, by resistance R3 and resistance
R4 is input to amplification circuits；Amplifying circuit is preferably and uses LM324 integrated operational amplifier, i.e. U4A shown in Fig. 3, should
The amplification of amplifying circuit is realized by resistance R4 and resistance R6, and amplification is R6/R4, and when implementing, this is put
Big circuit also includes a pull down resistor R5.When temperature is raised, PT100 resistance becomes big, is input to the difference letter of amplifying circuit
Number becoming big, the output voltage of amplifying circuit also can corresponding raise, this differential signal after amplifying circuit processes by resistance R7
It is input to next stage.
Fig. 4 shows the circuit theory diagrams of a kind of signal adapter that the embodiment of the present invention provides, its output regulating circuitry
It is made up of resistance R10 and potentiometer RL2, changes reference current, and then regulation gain deviation by regulator potentiometer RL2, with
Correction output frequency.Modular converter consists of IC chip U2 and drive circuit, and wherein, IC chip U2 is
Voltage/frequency conversion chip.In the present embodiment, the preferred model of voltage/frequency conversion chip is LM131, and power supply VCC is preferably
8V, the drive circuit of IC chip U2 includes circuit R11, electric capacity C5, resistance R9, electric capacity C3 and electric capacity C4, input
Voltage signal is after the converted module of pin 7 of Vin end input ic chip U2, through the Vout end output frequency of pin 3
What signal, i.e. analogue signal exported after signal adapter effect is digital signal, it is simple to carries out long range propagation, and does not allows
Easily disturbed by surrounding.
Should be appreciated that above-mentioned accompanying drawing provides be applied to the temperature sensor of the embodiment of the present invention, signal processor and
The circuit theory diagrams of signal adapter, the only optimal way of the embodiment of the present invention, wherein, electronics unit in Fig. 2, Fig. 3, Fig. 4
The model of device and parameter, can select according to practical situation, including critesistor, IC chip etc., at other
Embodiment in, it is also possible to being other model, this is not limited by the embodiment of the present invention.
Embodiment 2
For the ease of being further understood from above-described embodiment 1, the embodiment of the present invention additionally provides a kind of temperature frequency and turns
The circuit theory diagrams of changing device, as shown in Figure 5.Should be appreciated that Fig. 5 is only the preferred circuit theory diagrams of the embodiment of the present invention,
Wherein, model and the parameter of electronic devices and components can select according to actually used situation.
Circuit diagram shown in Fig. 5, including above-described embodiment 1 provide temperature sensor circuit, signal processor circuit and
Signaling conversion circuit, also includes the circuit of photoelectric coupling circuit, overvoltage crowbar and supply unit.
Wherein, photoelectric coupling circuit includes photoelectrical coupler U1 and resistance R12, and wherein, the model of photoelectrical coupler U1 is excellent
Elect P521 as.When implementing, this photoelectric coupling circuit connects connecing of the outfan OUT of circuit by cache switching diodes D1
Line terminals J0, with the output of driving frequency signal, wherein, cache switching diodes model is preferably 1N4148.
Overvoltage crowbar is arranged at the outfan of signal processor and the input of signal adapter, for turning signal
Parallel operation provide overvoltage protection, in Figure 5, overvoltage crowbar is made up of electric capacity C2 and Zener diode Z1, wherein, electric capacity C2 and
One end of Zener diode Z1 is connected with the input of signal adapter by resistance R8, and electric capacity C2's and Zener diode Z1 is another
One end ground connection, when implementing, this overvoltage crowbar will enter into the voltage signal of signal adapter and protects within 5V, when
When voltage signal is more than 5V, Zener diode reverse breakdown, the backward resistance of Zener diode is reduced to a numerical value the lowest,
When this low-resistance region, being increased by the electric current of this Zener diode, voltage is then maintained at 5V voltage constant, changes signal
Device serves protective effect.
The temperature frequency conversion equipment that above-described embodiment provides also includes supply unit, is used for providing supply voltage, this electricity
Source apparatus circuit is as it is shown in figure 5, include diode D2, diode D3, electric capacity C6, electric capacity C7, and IC chip U3, its
In, IC chip U3 be model be the three-terminal voltage-stabilizing pipe of 78L08, for providing stable supply voltage, i.e. this power supply fills
The supply voltage put is 8V.This three-terminal voltage-stabilizing pipe of the direct voltage drive of embodiment of the present invention 12V, wherein, the direct current of this 12V
Voltage inputs to IC chip by 3 pins of the binding post J0 of outfan OUT by diode D3 and diode D2
U3.Electric capacity C6 and electric capacity C7 forms the filtering part of this power circuit, is connected to ground.
When implementing, the circuit of this temperature frequency conversion equipment runs and includes following process:
(1) platinum resistance thermometer sensor, PT100 is according to Current Temperatures resistance value, by the two of measuring bridge brachium pontis to signal processing
The amplifying circuit input difference voltage signal of device；
(2) differential signal is amplified processing by the amplifying circuit of signal processor, and output voltage signal is protected through overvoltage
Output voltage signal is transmitted to signal adapter by protection circuit；
(3) voltage signal of input is converted into the frequency corresponding with Current Temperatures by the IC chip U2 of signal adapter
Rate signal, it is achieved the conversion of analogue signal to digital signal, and this frequency signal is exported to photoelectrical coupler；Wherein, this letter
The input voltage range of number transducer is: 0～5V；The frequency range of frequency signal of signal adapter output be 200Hz～
1000Hz；
(4) photoelectrical coupler output of driving frequency signal by the way of photoelectric coupling, passes through cache switching diodes
1N4148 is connected to the binding post J0 of outfan OUT.
Further, at the outfan of binding post J0, it is also possible to connect an alarm device, such as, buzzer or send out
The devices such as optical diode, when this temperature frequency conversion equipment is for mine temperature, and when current mine ambient temperature is higher, permissible
Sound a buzzer or lamp sudden strain of a muscle etc. is reported to the police, to improve the efficiency of environmental monitoring.
A kind of temperature frequency conversion equipment that the embodiment of the present invention provides, gathers the temperature of residing mine by temperature sensor
Degree, carries out processing and amplifying, and utilizes signal adapter to convert electrical signals into the frequency corresponding with temperature after changing into the signal of telecommunication
Signal is transmitted, it is achieved that the monitoring to mine temperature, and the transmitting procedure of frequency signal is also not susceptible to Mine Complicated simultaneously
The interference of environment, and then improve the efficiency of mine temperature monitoring.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the temperature of foregoing description
The specific works process of the circuit theory diagrams of frequency conversion apparatus, the corresponding process being referred in previous embodiment, at this not
Repeat again.
It should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase in the description of invention
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
Institute the above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, appoint
What those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, answering
Contain within protection scope of the present invention.Therefore, protection scope of the present invention should described with scope of the claims be
Accurate.
Claims (10)
1. a temperature frequency conversion equipment, it is characterised in that including: the temperature sensor that is sequentially connected with, signal processor with
And signal adapter；
Described temperature sensor, for the temperature of Real-time Collection local environment, adjusts described temperature sensor according to Current Temperatures
Internal resistance, generates the voltage signal corresponding with described Current Temperatures, by the transmission of described voltage signal to described signal processor；
Described signal processor, for described voltage signal is amplified process, exports the described voltage signal after amplifying；
Described signal adapter, for the described voltage signal received is carried out frequency conversion, obtains and described Current Temperatures pair
The frequency signal answered, exports described frequency signal.
Device the most according to claim 1, it is characterised in that described device also includes: defeated with described signal adapter
Go out the photoelectrical coupler that end connects, for driving the output of described frequency signal by the way of photoelectric coupling.
Device the most according to claim 1, it is characterised in that described temperature sensor includes: measuring bridge, is used for passing through
Critesistor gathers the temperature of local environment, adjusts the internal resistance of described temperature sensor according to Current Temperatures, generates and works as with described
The voltage signal that front temperature is corresponding, by the transmission of described voltage signal to described signal processor.
Device the most according to claim 3, it is characterised in that described temperature sensor also includes: with described measuring bridge
The mu balanced circuit connected；
Described mu balanced circuit provides voltage-stabilizing protection by voltage stabilizing chip for described temperature sensor.
Device the most according to claim 1, it is characterised in that described signal processor is differential amplifier circuit.
Device the most according to claim 1, it is characterised in that described signal adapter includes interconnective output regulation
Circuit and modular converter；
Described output regulating circuitry is for regulating the reference current of described modular converter；
Described modular converter is for generating reference current according to extraneous supply voltage, and receives the output of described signal processor
Voltage signal, the reference current after adjusting according to described output regulating circuitry and described voltage signal, output and described current temperature
The frequency signal that degree is corresponding.
Device the most according to claim 6, it is characterised in that the input voltage range of described signal adapter is: 0～
5V；The frequency range of the described frequency signal of described signal adapter output is 200Hz～1000Hz.
Device the most according to claim 1, it is characterised in that described device also includes: overvoltage crowbar；
Described overvoltage crowbar is arranged at the outfan of described signal processor and the input of described signal adapter, is used for
Overvoltage protection is provided to described signal adapter.
Device the most according to claim 1, it is characterised in that described device also includes: supply unit, is used for providing power supply
Voltage.
Device the most according to claim 9, it is characterised in that the supply voltage of described supply unit is 8V.
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| CN201610785811.6A CN106197730A (en) | 2016-08-30 | 2016-08-30 | A kind of temperature frequency conversion equipment |
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| CN201610785811.6A CN106197730A (en) | 2016-08-30 | 2016-08-30 | A kind of temperature frequency conversion equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111367227A (en) * | 2020-04-15 | 2020-07-03 | 深圳市厨盟天地信息技术有限公司 | Commercial kitchen equipment maintenance device of intelligence |
| CN114235207A (en) * | 2021-12-20 | 2022-03-25 | 珠海格力电器股份有限公司 | Temperature sampling circuit, method, device, equipment, storage medium and electric automobile |
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Application publication date: 20161207 |