CN203480338U - Constant-temperature controlling apparatus - Google Patents
Constant-temperature controlling apparatus Download PDFInfo
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- CN203480338U CN203480338U CN201320573796.0U CN201320573796U CN203480338U CN 203480338 U CN203480338 U CN 203480338U CN 201320573796 U CN201320573796 U CN 201320573796U CN 203480338 U CN203480338 U CN 203480338U
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- controlled equipment
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Abstract
Disclosed in the utility model is a constant-temperature controlling apparatus comprising a main control module, an analog-to-digital conversion module, a simulated proportional-integral-derivative controller, a temperature detection module, a switch element and a heating element. The analog-to-digital conversion module is electrically connected with the main control module; and the simulated proportional-integral-derivative controller is electrically connected with the analog-to-digital conversion module. The temperature detection module includes a temperature sensor and is electrically connected with the simulated proportional-integral-derivative controller; and the temperature detection module converts a detected temperature signal into an electrical signal and then transmits the electrical signal to the simulated proportional-integral-derivative controller. The switch element is electrically connected with the main control module; and the heating element is electrically connected with the switch element.
Description
Technical field
The utility model relates to a kind of control device, especially a kind of thermostatically-controlled equipment.
Background technology
Thermostatically-controlled equipment is widely used in the every field of the social life such as household electrical appliances, automobile, material, power electronics and Industry Control, and its circuit form can be according to application scenario and desired performance index and be different.Especially in Industry Control, temperature not only affects output and the quality of product, and the while is affects safety production also, and in Industry Control, controlled target temperature often exists the problems such as situation is complicated, parameter is changeable, factor is uncertain.Thereby the running precision and the performance index that how to improve this class controlled target temperature are all that Industry Control personnel and field technician make great efforts the problem solving all the time.And traditional thermostatically-controlled equipment is to adopt control relay circuit to carry out thermostatic control, although simple and practical, but because its control accuracy is low, inertia is large, control rate is slow, over-control is serious, thereby cause control performance not good, even occur to control the unstable phenomenon such as even out of control.And, because the actuating of relay is frequent, after long-time use, can affect because contact is bad normal operation.
Utility model content
The utility model, in order to overcome the serious problem of over-control in prior art, provides a kind of thermostatically-controlled equipment.
To achieve these goals, the utility model provides a kind of thermostatically-controlled equipment, comprises main control module, analog-to-digital conversion module, simulation proportional-integral derivative controller, temperature detecting module, on-off element and heating element.Analog-to-digital conversion module is electrically connected main control module.Simulation proportional-integral derivative controller is electrically connected analog-to-digital conversion module.Temperature detecting module comprises temperature sensor and is electrically connected simulates proportional-integral derivative controller, and temperature detecting module is sent to simulation proportional-integral derivative controller after the temperature signal detecting is converted to electric signal.On-off element is electrically connected main control module.Heating element is electrically connected on-off element.
In an embodiment of the present utility model, thermostatically-controlled equipment also comprises stabilized voltage supply, and described stabilized voltage supply is electrically connected respectively described main control module, analog-to-digital conversion module, simulation proportional-integral derivative controller, temperature detecting module, on-off element and heating element.
In an embodiment of the present utility model, analog-to-digital conversion module comprises analog to digital converter and photoelectrical coupler, and photoelectrical coupler is electrically connected simulation proportional-integral derivative controller and analog to digital converter.
In an embodiment of the present utility model, temperature detecting module also comprises amplifier, and amplifier electrically connects temperature sensor and simulation proportional-integral derivative controller.
In an embodiment of the present utility model, thermostatically-controlled equipment also comprises alarm, and alarm is electrically connected main control module.
In an embodiment of the present utility model, alarm is piezoelectric buzzer.
In an embodiment of the present utility model, thermostatically-controlled equipment also comprises reset circuit, and reset circuit is electrically connected main control module and is electrify restoration circuit.
In an embodiment of the present utility model, thermostatically-controlled equipment also comprises immunity module, and immunity module is electrically connected main control module.
In an embodiment of the present utility model, temperature sensor is occasionally integrated temperature sensor of thermal resistance, thermoelectricity.
In an embodiment of the present utility model, on-off element is bidirectional triode thyristor.
In sum, the thermostatically-controlled equipment that the utility model provides, by analog-to-digital conversion module is set, it delivers to main control module after simulating signal can being converted to digital signal, has improved the processing speed of thermostatically-controlled equipment.By set temperature detection module and electric connection simulation proportional-integral derivative controller, it delivers to simulation proportional-integral derivative controller after can be used for detecting in real time the actual temperature of measured object and the temperature signal detecting being converted to electric signal.By simulation proportional-integral derivative controller is set, its signal that can detect temperature sensor carries out ratio, integration, differential processing, thereby accelerates the response speed of thermostatically-controlled equipment, reduces overshoot, strengthens stability.By on-off element and heating element are set, main control module changes the heated condition of heating element by unlatching or closing switch element, thereby realizes the stable control of measured object temperature.
In addition, by increase photoelectrical coupler in analog-to-digital conversion module, it can be isolated simulating signal and digital signal, the phase mutual interference of anti-stop signal, the antijamming capability of raising thermostatically-controlled equipment.By alarm is set, when thermostatically-controlled equipment breaks down, cause the temperature that temperature sensor detects to exceed for a long time while presetting temperature, master control module controls alarm sends chimes of doom, and warning user processes, and prevents that security incident from occurring.By reset circuit is set, when thermostatically-controlled equipment powers on, main control module just reverts to original state, prevents that deadlock phenomenon from appearring in main control module, improves stability.By immunity module is set, the magnetic interference that it can effectively suppress the internal interference that produces from the approach such as power supply, ground wire, distributed capacitance and inductance and produce from thunder and lightning and other electrical equipments.By increase amplifier in temperature detecting module, the signal that temperature sensor detects is delivered to simulation proportional-integral derivative controller after amplifier amplifies, thereby reduces distorted signals, improves accuracy of detection.Stabilized voltage supply can be whole device stable power supply is provided.
For above-mentioned and other objects, features and advantages of the present utility model can be become apparent, preferred embodiment cited below particularly, and coordinate accompanying drawing, be described in detail below.
Accompanying drawing explanation
The schematic block circuit diagram of the thermostatically-controlled equipment providing according to an embodiment of the present utility model is provided.
Embodiment
As shown in Figure 1, the thermostatically-controlled equipment that the utility model provides, comprises main control module 1, analog-to-digital conversion module 2, simulation proportional-integral derivative controller 3, temperature detecting module 4, on-off element 5, heating element 6 and stabilized voltage supply 7.Analog-to-digital conversion module 2 is electrically connected main control module 1.Simulation proportional-integral derivative controller 3 is electrically connected analog-to-digital conversion module 2.Temperature detecting module 4 comprises temperature sensor 401 and is electrically connected simulates proportional-integral derivative controller 3, and temperature detecting module 4 is sent to simulation proportional-integral derivative controller 3 after the temperature signal detecting is converted to electric signal.On-off element 5 is electrically connected main control module 1.Heating element 6 is electrically connected on-off element 5.
In the present embodiment, main control module 1 can comprise single-chip microcomputer, and the model of single-chip microcomputer can be AT89S52.Analog-to-digital conversion module 2 comprises analog to digital converter 201 and photoelectrical coupler 202.Photoelectrical coupler 202 is electrically connected simulation proportional-integral derivative controller 3 and analog to digital converter 201, for isolating, simulate the output signal of proportional-integral derivative controller 3 and the input signal of analog to digital converter 201, thereby anti-stop signal disturbs, improve the stability of thermostatically-controlled equipment.
Temperature detecting module 4 also comprises amplifier 402, and amplifier 402 is electrically connected temperature sensor 401 and proportional-integral derivative controller 2, is sent to simulation proportional-integral derivative controller 2 after its signal that temperature sensor 401 can be detected amplifies.In the present embodiment, the model of temperature sensor 401 can be DS18B20.DS18B20 is a integrated temperature sensor that integrates temperature sensor 401, amplifier 402, analog to digital converter 201 and photoelectrical coupler 202.Yet the utility model is not limited in any way this.In other embodiment, temperature sensor 401, amplifier 402, analog to digital converter 201 and photoelectrical coupler 202 can independently arrange.The temperature-measuring range of DS18B20 is-55 to+125 ℃, and intrinsic thermometric resolution is 0.5 ℃, has that volume is little, reaction is fast, good linearity, temperature-measuring range is wide and precision advantages of higher.On-off element 5 is bidirectional triode thyristor BTA12.
In actual use, first user presets temperature for measured object, and the setting of this temperature can realize by bleeder circuit.In the present embodiment, measured object is the water in electric cup, and predefined temperature is 80 ℃.Yet the utility model is not limited in any way this.Temperature sensor 401 is for detection of the actual temperature of measured object, and is sent to simulation proportional-integral derivative controller 3 after the temperature signal detecting is converted to electric signal.The signal that simulation proportional-integral derivative controller 3 detects temperature sensor 401 and the temperature that presets of measured object compare, and produce side-play amount, and this side-play amount is carried out delivering to photoelectrical coupler 202 after ratio, integration, differential processing.Photoelectrical coupler 202 is delivered to analog to digital converter 201 after the conversion of electrical-optical-electricity.Analog to digital converter 201 is delivered to main control module 1 after simulating signal is converted to digital signal.Because the thermometric resolution of DS18B20 is 0.5 ℃, the temperature detecting when temperature sensor 401 is during lower than 79.5 ℃, and main control module 1 sends control signal Closing Switch element 5, and 6 pairs of measured objects of heating element are heated, and increases the temperature of measured object.The temperature detecting when temperature sensor 401 is during higher than 80.5 ℃, and main control module 1 sends control signal cut-off switch element 5, and heating element 6 does not heat measured object, and after a period of time is cooling, measured object temperature is down to 80 ℃.By the measured object temperature to detecting with preset temperature and carry out ratio, integration, differential and process, thermostatically-controlled equipment has been realized the accurate control to water temperature in electric cup, prevents overshoot.
In the present embodiment, thermostatically-controlled equipment also comprises alarm 8, and alarm 8 is electrically connected main control module 1.Alarm 8 is piezoelectric buzzer.When thermostatically-controlled equipment breaks down, cause the temperature that temperature sensor 401 detects to surpass for a long time while presetting temperature, main control module 1 is controlled alarm 8 and is sent chimes of doom, and warning user processes, and prevents that security incident from occurring.In the present embodiment, can set the temperature that detects and surpass and preset temperature in the time of 5 minutes, alarm 8 sends chimes of doom.
In the present embodiment, thermostatically-controlled equipment also comprises stabilized voltage supply 7, stabilized voltage supply 7 is electrically connected respectively main control module 1, analog-to-digital conversion module 2, simulation proportional-integral derivative controller 3, temperature detecting module 4, on-off element 5 and heating element 6, for thermostatically-controlled equipment provides stable power supply.In the present embodiment, stabilized voltage supply 7 comprises the alternating-current voltage source of 5V direct voltage source and 220V.
In the present embodiment, thermostatically-controlled equipment also comprises reset circuit 9, and its type is electrify restoration circuit.By reset circuit is set, when thermostatically-controlled equipment powers on, main control module just restPoses, and prevents that deadlock phenomenon from appearring in main control module, improves stability.
In the present embodiment, thermostatically-controlled equipment also comprises immunity module 10, and immunity module 10 is electrically connected main control module 1.The model of immunity module 10 is X5045.The serial EEPROM (Electrically Erasable Programmable Read Only Memo) that X5045 integrates electrify restoration circuit, WatchDog Timer, step-down management and has defencive function, the area occupied of minimizing printed-wiring board (PWB), improves reliability.Its function is the external disturbance for reducing the internal interference that produces from the approach such as power supply, ground wire, distributed capacitance and inductance and producing from thunder and lightning and other electrical equipments, and provide and power on and detection of power loss, make this thermostatically-controlled equipment more stable, measuring accuracy is higher.
In sum, the thermostatically-controlled equipment that the utility model provides, by analog-to-digital conversion module 2 is set, it delivers to main control module 1 after simulating signal can being converted to digital signal, has improved the processing speed of thermostatically-controlled equipment.By set temperature detection module 4 and electric connection simulation proportional-integral derivative controller 3, it delivers to simulation proportional-integral derivative controller 3 after can be used for detecting in real time the actual temperature of measured object and the temperature signal detecting being converted to electric signal.By simulation proportional-integral derivative controller 3 is set, its signal that can detect temperature sensor 401 carries out ratio, integration, differential processing, thereby accelerates the response speed of thermostatically-controlled equipment, reduces overshoot, strengthens stability.By on-off element 5 and heating element 6 are set, main control module 1 changes the heated condition of heating element 6 by unlatching or closing switch element 5, thereby realizes the stable control of measured object temperature.
In addition, by increase photoelectrical coupler 202 in analog-to-digital conversion module 2, it can be isolated simulating signal and digital signal, and the phase mutual interference of anti-stop signal improves thermostatically-controlled equipment antijamming capability.By alarm 8 is set, when thermostatically-controlled equipment breaks down, cause the temperature that temperature sensor 401 detects to surpass while presetting temperature, main control module 1 is controlled alarm 8 and is sent chimes of doom, and warning user processes, and prevents that security incident from occurring.By reset circuit 9 is set, when thermostatically-controlled equipment powers on, main control module just reverts to original state, prevents that deadlock phenomenon from appearring in main control module, improves stability.By immunity module 10 is set, the magnetic interference that it can effectively suppress the internal interference that produces from the approach such as power supply, ground wire, distributed capacitance and inductance and produce from thunder and lightning and other electrical equipments.By at the interior increase amplifier 402 of temperature detecting module 4, the signal that temperature sensor 401 detects is delivered to simulation proportional-integral derivative controller 3 after amplifier 402 amplifies, thereby reduces distorted signals, improves accuracy of detection.Stabilized voltage supply 7 provides stable power supply for whole system.
Although the utility model is disclosed as above by preferred embodiment; yet not in order to limit the utility model; anyly know this skill person; within not departing from spirit and scope of the present utility model; can do a little change and retouching, therefore protection domain of the present utility model is when being as the criterion depending on claims scope required for protection.
Claims (10)
1. a thermostatically-controlled equipment, is characterized in that, comprising:
Main control module;
Analog-to-digital conversion module, is electrically connected described main control module;
Simulation proportional-integral derivative controller, is electrically connected described analog-to-digital conversion module;
Temperature detecting module, comprises temperature sensor, and described temperature sensor is electrically connected described simulation proportional-integral derivative controller, is sent to described simulation proportional-integral derivative controller after the temperature signal detecting is converted to electric signal;
On-off element, is electrically connected described main control module;
Heating element, is electrically connected described on-off element.
2. thermostatically-controlled equipment according to claim 1, it is characterized in that, described thermostatically-controlled equipment also comprises stabilized voltage supply, and described stabilized voltage supply is electrically connected respectively described main control module, analog-to-digital conversion module, simulation proportional-integral derivative controller, temperature detecting module, on-off element and heating element.
3. thermostatically-controlled equipment according to claim 1, is characterized in that, described analog-to-digital conversion module comprises analog to digital converter and photoelectrical coupler, and described photoelectrical coupler is electrically connected described simulation proportional-integral derivative controller and described analog to digital converter.
4. thermostatically-controlled equipment according to claim 1, is characterized in that, described temperature detecting module also comprises amplifier, and described amplifier electrically connects described temperature sensor and simulation proportional-integral derivative controller.
5. thermostatically-controlled equipment according to claim 1, is characterized in that, described thermostatically-controlled equipment also comprises alarm, and described alarm is electrically connected described main control module.
6. thermostatically-controlled equipment according to claim 5, is characterized in that, described alarm is piezoelectric buzzer.
7. thermostatically-controlled equipment according to claim 1, is characterized in that, described thermostatically-controlled equipment also comprises reset circuit, and described reset circuit is electrify restoration circuit, and described reset circuit is electrically connected described main control module.
8. thermostatically-controlled equipment according to claim 1, is characterized in that, described thermostatically-controlled equipment also comprises immunity module, and described immunity module is electrically connected described main control module.
9. thermostatically-controlled equipment according to claim 1, is characterized in that, described temperature sensor is occasionally integrated temperature sensor of thermal resistance, thermoelectricity.
10. thermostatically-controlled equipment according to claim 1, is characterized in that, described on-off element is bidirectional triode thyristor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573796.0U CN203480338U (en) | 2013-09-17 | 2013-09-17 | Constant-temperature controlling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573796.0U CN203480338U (en) | 2013-09-17 | 2013-09-17 | Constant-temperature controlling apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN203480338U true CN203480338U (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320573796.0U Expired - Fee Related CN203480338U (en) | 2013-09-17 | 2013-09-17 | Constant-temperature controlling apparatus |
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| CN (1) | CN203480338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109445490A (en) * | 2018-12-12 | 2019-03-08 | 上海航天控制技术研究所 | A kind of temperature control circuit of highly reliable high safety |
-
2013
- 2013-09-17 CN CN201320573796.0U patent/CN203480338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109445490A (en) * | 2018-12-12 | 2019-03-08 | 上海航天控制技术研究所 | A kind of temperature control circuit of highly reliable high safety |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20160917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |