CN109655175A - A kind of control of high-precision multi-path temperature and recorder - Google Patents
A kind of control of high-precision multi-path temperature and recorder Download PDFInfo
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- CN109655175A CN109655175A CN201910106750.XA CN201910106750A CN109655175A CN 109655175 A CN109655175 A CN 109655175A CN 201910106750 A CN201910106750 A CN 201910106750A CN 109655175 A CN109655175 A CN 109655175A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/022—Means for indicating or recording specially adapted for thermometers for recording
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/02—Thermometers giving results other than momentary value of temperature giving means values; giving integrated values
-
- 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
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a kind of control of high-precision multi-path temperature and recorders, belong to technical field of temperature control, comprising: temperature-measuring module, temperature collecting module, control unit, On-off signal output module, display screen, power supply unit, single-phase solid relay, binding post and heating tape；The temperature-measuring module, temperature collecting module, control unit and On-off signal output module sequence are electrically connected composition control circuit；The power supply unit, single-phase solid relay, binding post and heating tape sequence are electrically connected composition heating circuit, for heating to product to be heated；The display screen and control unit are electrically connected；The present invention can be realized to the temperature control of product to be heated and record.
Description
Technical field
The invention belongs to technical field of temperature control, and in particular to a kind of control of high-precision multi-path temperature and recorder.
Background technique
Temperature control and recorder is temperature control, the important instrument that measures and records involved in engineering field experiment it
One, main function is to heat to experimental article and record its temperature in real time.Existing temperature control cannot achieve with recorder
In high precision, the temperature of multichannel is controlled and is recorded and there are deficiencies below: 1. only with a thermoelectricity in experiment heating space
Resistance measures its temperature, it can be achieved that the control of single-pass channel temp and the temperature for recording and only measuring certain point, cannot really reflect
True temperature needed for the space and experiment；2. Current Temperatures control generally measures 0-150 using thermal resistance with recorder
DEG C medium and low temperature, the measurement of high-precision higher temperature can not be carried out；3. current temperature control may be implemented with recorder
It is heated to a certain specific temperature, but the real-time change of heating process temperature can not record；4. current temperature control and note
Record instrument reaches the setting that can not carry out soaking time after set temperature to it.
Summary of the invention
In view of this, can be realized the present invention provides a kind of control of high-precision multi-path temperature and recorder to be added
The temperature of hot product controls and record.
The present invention is achieved through the following technical solutions:
A kind of control of high-precision multi-path temperature and recorder, comprising: temperature-measuring module, temperature collecting module, control
Unit, On-off signal output module, display screen, power supply unit, single-phase solid relay, binding post and heating tape；
The temperature-measuring module, temperature collecting module, control unit and On-off signal output module sequence electrically connect
Connect composition control circuit；The power supply unit, single-phase solid relay, binding post and heating tape sequence are electrically connected composition and add
Hot loop, for being heated to product to be heated；The display screen and control unit are electrically connected；
The power supply unit is used to supply to temperature collecting module, On-off signal output module and single-phase solid relay
Electricity；
The On-off signal output module is used to control the on-off of single-phase solid relay；
The single-phase solid relay controls the on-off of its own for signal based on the received；Single-phase solid relay
When connection, heating circuit is connected, and power supply unit provides load voltage to heating tape by binding post；When disconnection, heating circuit
It disconnects, power supply unit no longer passes through binding post and provides load voltage to heating tape；
The heating tape is coated on outside hot product to be added, is connected with binding post, when single-phase solid relay is connected, electricity
The voltage sequence that source power supply unit provides is by single-phase solid relay, stud conductor to heating tape, heating tape heating, to be added
Hot product heating；
The temperature-measuring module is used to measure the real time temperature of hot product two or more different zones to be added, and two
Real time temperature information described above is sent to temperature collecting module；The temperature-measuring module is by more than two thermal resistances and two
The above thermocouple composition, more than two thermal resistances or more than two thermocouples simultaneously survey the different zones of product to be heated
Amount, forms the measurement pattern of multichannel；
After the temperature collecting module receives the real time temperature information of hot product different zones to be added, respectively by two with
Upper real time temperature information is converted into electric signal and is sent to control unit；
The heating temperature being arranged to hot product to be added is preset in described control unit；Receiving more than two telecommunications
After number, for converting corresponding temperature information for the electric signal, and more than two temperature informations are averaged to obtain
The average real time temperature of hot product to be added；Control unit compares the average real time temperature with preset heating temperature；
(1) if the average real time temperature is less than preset heating temperature, control unit is controlled by On-off signal output module
Single-phase solid relay is connected, i.e., heating circuit is connected；(2) if the average real time temperature is greater than or equal to preset heating temperature
Degree, then control unit controls single-phase solid relay by On-off signal output module and disconnects, i.e., heating circuit disconnects；
Meanwhile the average real time temperature is also sent to display screen by control unit, display screen receives described average real
After Shi Wendu, storage record is carried out to the average real time temperature, and generate temperature curve and show.
Further, control unit controls what single-phase solid relay was switched on or switched off by On-off signal output module
Process is as follows:
If the temperature information is less than setting heating temperature, control unit sends to On-off signal output module and connects
Signal after On-off signal output module receives connection signal, gives single-phase solid relay to send high level signal, single-phase solid
State relay is connected after receiving the high level signal；
If the temperature information is greater than or equal to setting heating temperature, control unit is sent out to On-off signal output module
After sending cut-off signal, On-off signal output module to receive cut-off signal, low level signal is sent to single-phase solid relay,
Single-phase solid relay disconnects after receiving the low level signal.
Further, the connection signal is on-off model " 1 ", and cut-off signal is on-off model " 0 ".
Further, the soaking time being arranged to hot product to be added is preset in described control unit；
In preset soaking time, control unit carries out pair according to the average real time temperature and setting heating temperature
Than repeating (1) and (2), i.e. the on-off of Repetitive controller single-phase solid relay, realizing in setting soaking time to be heated
The heat preservation of product；After setting soaking time, control unit no longer controls the on-off of single-phase solid relay, hot product to be added
Natural cooling.
Further, the heating tape is equipped with different capacity section, and different capacity section corresponds to different heating temperatures,
Corresponding power interval is selected to be connected with binding post according to the setting heating temperature of control unit.
Further, the thermal resistance is for measuring hot product to be added in the temperature less than 150 DEG C of temperature ranges；The heat
Galvanic couple is used to measure hot product to be added in the temperature for being greater than or equal to 150 DEG C of temperature ranges.
The utility model has the advantages that (1) present invention is to be heated to measure by using more than two thermal resistances or more than two thermocouples
The real time temperature of product, and read its average value as temperature and control benchmark, improve product test and control the accurate of temperature
Property.
(2) present invention can not only measure the middle low temperature environment less than 150 DEG C with thermal resistance, while can be surveyed with thermocouple
Amount is greater than or equal to 150 DEG C of hot environment, promotes the product general applicability；And due to the high-precision characteristic of thermocouple
Guarantee is provided for experiment accuracy.
(3) display screen of the invention can show, record the real time temperature curve of hot product to be added.
(4) present invention is configured by the soaking time to product to be heated, improves the operability of experiment and guarantor
Going on smoothly for experiment is hindered.
Detailed description of the invention
Fig. 1 is structure composition figure of the invention；
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
A kind of control of high-precision multi-path temperature and recorder are present embodiments provided, referring to attached drawing 1, comprising: temperature is surveyed
Measure module, temperature collecting module, control unit, display screen, On-off signal output module, power supply unit, single-phase solid-state after
Electric appliance, binding post and heating tape；
The temperature-measuring module, temperature collecting module, control unit and On-off signal output module sequence electrically connect
Connect composition control circuit；The power supply unit, single-phase solid relay, binding post and heating tape sequence are electrically connected composition and add
Hot loop, for being heated to product to be heated；The display screen and control unit are electrically connected, and are used for display control unit
The information of transmission；
The power supply unit is used to supply to temperature collecting module, On-off signal output module and single-phase solid relay
Electricity；
The On-off signal output module is according to the connection signal or cut-off signal received, to single-phase solid-state relay
Device sends high level signal or low level signal, and then controls the on-off of single-phase solid relay；
The single-phase solid relay high level signal or low level signal based on the received, control the on-off of its own；
When single-phase solid relay is connected, heating circuit is connected, and power supply unit provides load voltage to heating tape by binding post；It is disconnected
When opening, heating circuit is disconnected, and power supply unit no longer passes through binding post and provides load voltage to heating tape；Wherein, single-phase solid-state
Relay uses small-sized high-power solid-state relay, model SSR-40-DA；
The heating tape is coated on outside hot product to be added, is connected with binding post, when single-phase solid relay is connected, electricity
The voltage sequence that source power supply unit provides is by single-phase solid relay, stud conductor to heating tape, heating tape heating, to be added
Hot product heating；Wherein, the heating tape is equipped with different capacity section, and different capacity section corresponds to different heating temperatures,
Corresponding power interval is selected to be connected with binding post according to the setting heating temperature of control unit.
The temperature-measuring module is used to measure the real time temperature of hot product two or more different zones to be added, and two
Real time temperature information described above is sent to temperature collecting module；The temperature-measuring module is by more than two thermal resistances and two
The above thermocouple composition, more than two thermal resistances or more than two thermocouples simultaneously survey the different zones of product to be heated
Amount, forms the measurement pattern of multichannel；Wherein, the thermal resistance is for measuring hot product to be added in less than 150 DEG C temperature ranges
Temperature；The thermocouple is used to measure hot product to be added in the temperature for being greater than or equal to 150 DEG C of temperature ranges, and measurement accuracy
It is high；
After the temperature collecting module receives the real time temperature information of hot product different zones to be added, respectively by two with
Upper real time temperature information is converted into electric signal and is sent to control unit；
The heating temperature and soaking time being arranged to hot product to be added are preset in described control unit；Receive two with
After the upper electric signal, corresponding temperature information is converted by the electric signal, and be averaged to more than two temperature informations
Value obtains the average real time temperature of hot product to be added, to improve the precision of temperature measurement；Control unit will be described average warm in real time
Degree is compared with preset heating temperature；(1) if the average real time temperature is less than preset heating temperature, control unit
It is sent to On-off signal output module and connects signal (i.e. on-off model " 1 "), On-off signal output module receives
After messenger, high level signal is sent to single-phase solid relay, after single-phase solid relay receives the high level signal
It connects, i.e., heating circuit is connected, and product to be heated is heated in heating tape, and product temperature to be heated increases；(2) if it is described flat
Equal real time temperature is greater than or equal to preset heating temperature, then control unit sends cut-off signal to On-off signal output module
(i.e. on-off model " 0 ") after On-off signal output module receives cut-off signal, sends low electricity to single-phase solid relay
Ordinary mail number, single-phase solid relay disconnect after receiving the low level signal, i.e., heating circuit disconnects, and heating tape is to be heated
Product stops heating, and product temperature to be heated reduces；It in preset soaking time, repeats (1) and (2), realizes to be heated
The heat preservation of product；
Meanwhile the average real time temperature is also sent to display screen by control unit, display screen receives described average real
After Shi Wendu, storage record is carried out to the average real time temperature, and generate temperature curve and show；
Workflow:
The first step is operated by display screen, presets heating temperature and soaking time to hot product to be added in control unit；
Second step, according to the selection of the heating temperature of setting using the real-time of thermal resistance or thermocouple measurement hot product to be added
Temperature；If setting heating temperature less than 150 DEG C, thermal resistance is selected to measure the real time temperature of hot product to be added；If setting heating
Temperature is greater than or equal to 150 DEG C, then selects the real time temperature of thermocouple measurement hot product to be added；
Third step selects the corresponding power interval in heating tape according to the heating temperature of setting, by the corresponding power in heating tape
The both ends in section are connected with binding post respectively, and heating tape is coated on outside hot product to be added；
4th step, the real time temperature of hot product to be added is measured with thermoelectricity occasionally thermal resistance, and is converted by control unit
After average real time temperature, formation temperature curve is shown on a display screen, realizes the thermograph to product to be heated；Meanwhile it controlling
Unit processed compares the average real time temperature of hot product to be added and setting heating temperature；
If the average real time temperature is less than setting heating temperature, control unit is sent to On-off signal output module
It connects signal (i.e. on-off model " 1 "), after On-off signal output module receives connection signal, gives single-phase solid relay
High level signal is sent, single-phase solid relay is connected after receiving the high level signal；Then power supply unit, single-phase solid-state
Access is formed between relay, binding post and heating tape, heating tape work is heated, product temperature to be heated to hot product to be added
Increase, until hot product to be added be heated to its average real time temperature it is identical as setting heating temperature when, control unit is to switching
It measures input/output module and sends cut-off signal (i.e. on-off model " 0 "), On-off signal output module receives cut-off signal
Afterwards, low level signal is sent to single-phase solid relay, single-phase solid relay disconnects after receiving the low level signal；Then
Open circuit is formed between power supply unit, single-phase solid relay, binding post and heating tape, heating tape stops adding to hot product to be added
Heat, product temperature to be heated reduce；It realizes and the temperature of product to be heated is controlled；In setting soaking time, if production to be heated
Product temperature degree falls below setting heating temperature, then control unit controls single-phase solid-state relay by On-off signal output module
Device is again switched on, and is heated again to product to be heated, that is, passes through the on-off of Repetitive controller single-phase solid relay, is realized
Set the heat preservation in soaking time to product to be heated；After setting soaking time, control unit no longer controls single-phase solid-state
The on-off of relay, hot product natural cooling to be added.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of high-precision multi-path temperature control and recorder characterized by comprising temperature-measuring module, temperature acquisition
Module, control unit, On-off signal output module, display screen, power supply unit, single-phase solid relay, binding post and add
The torrid zone；
The temperature-measuring module, temperature collecting module, control unit and On-off signal output module sequence electric connection group
At control loop；The power supply unit, single-phase solid relay, binding post and heating tape sequence are electrically connected composition and heat back
Road, for being heated to product to be heated；The display screen and control unit are electrically connected；
The power supply unit is used to power to temperature collecting module, On-off signal output module and single-phase solid relay；
The On-off signal output module is used to control the on-off of single-phase solid relay；
The single-phase solid relay controls the on-off of its own for signal based on the received；Single-phase solid relay is connected
When, heating circuit is connected, and power supply unit provides load voltage to heating tape by binding post；When disconnection, heating circuit is disconnected,
Power supply unit no longer passes through binding post and provides load voltage to heating tape；
The heating tape is coated on outside hot product to be added, is connected with binding post, and when single-phase solid relay is connected, power supply is supplied
For the voltage sequence for answering device to provide by single-phase solid relay, stud conductor to heating tape, production to be heated is given in heating tape heating
Product heating；
The temperature-measuring module is used to measure the real time temperature of hot product two or more different zones to be added, and more than two
The real time temperature information is sent to temperature collecting module；The temperature-measuring module is by more than two thermal resistances and two or more
Thermocouple composition, more than two thermal resistances or more than two thermocouples simultaneously measure the different zones of product to be heated,
Form the measurement pattern of multichannel；
It, respectively will be more than two real after the temperature collecting module receives the real time temperature information of hot product different zones to be added
When temperature information be converted into electric signal and be sent to control unit；
The heating temperature being arranged to hot product to be added is preset in described control unit；Receiving more than two electric signals
Afterwards, for converting corresponding temperature information for the electric signal, and to more than two temperature informations be averaged to obtain to
Heat the average real time temperature of product；Control unit compares the average real time temperature with preset heating temperature；(1)
If the average real time temperature is less than preset heating temperature, control unit is controlled single-phase by On-off signal output module
Solid-state relay is connected, i.e., heating circuit is connected；(2) if the average real time temperature is greater than or equal to preset heating temperature,
Then control unit controls single-phase solid relay by On-off signal output module and disconnects, i.e., heating circuit disconnects；
Meanwhile the average real time temperature is also sent to display screen by control unit, display screen receives the average temperature in real time
After degree, storage record is carried out to the average real time temperature, and generate temperature curve and show.
2. a kind of high-precision multi-path temperature control as described in claim 1 and recorder, which is characterized in that control unit is logical
It is as follows to cross the process that On-off signal output module control single-phase solid relay is switched on or switched off:
If the temperature information is less than setting heating temperature, control unit sends to On-off signal output module and connects letter
Number, after On-off signal output module receives connection signal, single-phase solid relay is given to send high level signal, single-phase solid-state
Relay is connected after receiving the high level signal；
If the temperature information is greater than or equal to setting heating temperature, control unit sends disconnected to On-off signal output module
ON signal after On-off signal output module receives cut-off signal, sends low level signal to single-phase solid relay, single-phase
Solid-state relay disconnects after receiving the low level signal.
3. a kind of high-precision multi-path temperature control as claimed in claim 2 and recorder, which is characterized in that the connection letter
Number be on-off model " 1 ", cut-off signal be on-off model " 0 ".
4. a kind of high-precision multi-path temperature control as described in claim 1 and recorder, which is characterized in that the control is single
The soaking time being arranged to hot product to be added is preset in member；
In preset soaking time, control unit is compared according to the average real time temperature with setting heating temperature, weight
Multiple (1) and (2), the i.e. on-off of Repetitive controller single-phase solid relay are realized in setting soaking time to product to be heated
Heat preservation；After setting soaking time, control unit no longer controls the on-off of single-phase solid relay, and hot product to be added is naturally cold
But.
5. a kind of high-precision multi-path temperature control as described in claim 1 and recorder, which is characterized in that the heating tape
It is equipped with different capacity section, different capacity section corresponds to different heating temperatures, according to the setting heating temperature of control unit
Corresponding power interval is selected to be connected with binding post.
6. a kind of high-precision multi-path temperature control as described in claim 1 and recorder, which is characterized in that the thermal resistance
For measuring hot product to be added in the temperature less than 150 DEG C of temperature ranges；The thermocouple is for measuring hot product to be added big
In or equal to 150 DEG C of temperature ranges temperature.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044168A (en) * | 2019-11-27 | 2020-04-21 | 上海新华控制技术集团科技有限公司 | Thermocouple and thermal resistor integrated acquisition clamping piece |
| CN111736026A (en) * | 2020-06-29 | 2020-10-02 | 深圳市京泉华科技股份有限公司 | Temperature rise test system and method |
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Application publication date: 20190419 |