CN103389753A - Water temperature monitoring system with water temperature signal amplification function - Google Patents
Water temperature monitoring system with water temperature signal amplification function Download PDFInfo
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- CN103389753A CN103389753A CN2012101456811A CN201210145681A CN103389753A CN 103389753 A CN103389753 A CN 103389753A CN 2012101456811 A CN2012101456811 A CN 2012101456811A CN 201210145681 A CN201210145681 A CN 201210145681A CN 103389753 A CN103389753 A CN 103389753A
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Abstract
The invention discloses a water temperature monitoring system with the water temperature signal amplification function. The water temperature monitoring system is mainly composed of a master control circuit, a temperature sensing circuit, a communication circuit and a relay circuit, wherein the temperature sensing circuit, the communication circuit and the relay circuit are connected with the master control circuit. The temperature sensing circuit is connected with a temperature sensor, the communication circuit is connected with a PC, and the relay circuit is connected with an electric heater. The water temperature monitoring system has the advantages that a single-chip microcomputer SPCE061A is used as a temperature monitoring core part and combines with the sensor PT100 to sample water temperature, interference in the system is eliminated and a current temperature value is restored by the adoption of the digital filter technology, proportion integral differential operation is conducted on acquired temperature values, and then the water temperature monitoring system is designed. The test result shows that the system has the good temperature control capacity.
Description
Technical field
The present invention relates to water temperature monitoring system, specifically refer to possess the water temperature monitoring system that water temperature signal amplifies.
Background technology
Temperature controls at industrial control field or the consumer electronics field application is all very extensive, as the control of the boiler in Industry Control, heating furnace, and the water heater of consumer electronics field, the control of water dispenser.Inside all relates to temperature and controls.And the abundant of control algolithm also controls for temperature the condition of providing convenience at present, application proportional integral differential (PID) control comparatively at large, fuzzy control etc.
Summary of the invention
The object of the present invention is to provide a kind of simple in structurely, control mode is simple, production cost is low possesses the water temperature monitoring system that water temperature signal amplifies.
Implementation of the present invention is as follows: possess the water temperature monitoring system that water temperature signal amplifies, mainly by governor circuit and the temperature sensing circuit that is connected with governor circuit, telecommunication circuit, relay circuit, formed, described degree sensing circuit is connected with temperature sensor, and telecommunication circuit is connected with PC, relay circuit is connected with electric heater;
Described temperature sensing circuit mainly consists of the operational amplification circuit of the measuring bridge that connects temperature sensor and connection measuring bridge; Described measuring bridge is comprised of adjustable resistance R3, resistance R 2, resistance R 4 and the temperature sensor of series connection successively, described operational amplification circuit consists of LM358 integrated operational amplifier U1A and the LM358 integrated operational amplifier U1B of serial connection, 2 pins of described LM358 integrated operational amplifier U1A are connected near an end of resistance R 2 with adjustable resistance R3, and 3 pins of described LM358 integrated operational amplifier U1A are connected with the end of resistance R 4 near temperature sensor.
Relay circuit also is connected with telecommunication circuit.
Described governor circuit also is connected with the LED lamp.
Described governor circuit comprises single-chip microcomputer SPCE061A, and described single-chip microcomputer SPCE061A is connected with temperature sensing circuit, telecommunication circuit, relay circuit, and described single-chip microcomputer SPCE061A is connected with the LED lamp.
Described governor circuit also comprises the multiplicative operator that is connected with single-chip microcomputer SPCE061A.
Described temperature sensor adopts platinum resistance sensor PT100.
Described telecommunication circuit comprises the MAX232 chip.
Based on foregoing, we can find out, the present invention adopts platinum resistance sensor PT100.Utilize temperature sensing circuit, the temperature data that collects is amplified debugging to be processed, after with data upload to single-chip microcomputer SPCE061A, processing computing through single-chip microcomputer SPCE061A, result is uploaded to PC by the telecommunication circuit that the MAX232 chip forms, simultaneously also data being sent to LED shows, also according to result of calculation output control command control relay circuit, cut-off with the relay in this control relay circuit, reach the driving electric heater with this and heat or stopped heating.
In addition, by native system, because telecommunication circuit in native system adopts the MAX232 chip, the relay that for this reason by PC, also can carry out in the Long-distance Control control relay circuit cut-offs, and reaches the driving electric heater with this and heats or stopped heating.Therefore, can carry out flexibly remote personnel controls voluntarily.
SPCE061A is the microcontroller of a 16 u'nspTM kernels, and this microcontroller not only can realize that basic control function also has some DSP functions simultaneously.The Flas-hROM of the embedded 32k of this chip and the SRAM of 2 k words, also integrated simultaneously ADC, DAC, AGC amplifying circuit etc., be a powerful SOC chip.This chip has the ADC of 8 10 precision in tunnel, and wherein a road is the audio frequency ALT-CH alternate channel, and other 7 tunnels can be used as common AD ALT-CH alternate channel.It can realize simple plus and minus calculation, in order to process complicated arithmetical operation, has also added the hardware multiplication arithmetical unit, can carry out n item inner product operation.The highest system clock can reach 49 MHz, and higher processing speed makes SPCE061A can be very easy to carry out rapidly complicated arithmetic logical operation.What native system adopted is 61 plates, and 61 plates are exactly the development system of SPCE061, and 61 plates except having single-chip minimum system, also have power circuit, voicefrequency circuit, reset circuit and button etc.
The temperature sensor of native system adopts platinum resistance sensor PT100, the physical and chemical performance of platinum resistance thermometer sensor, is very stable in high temperature and Oxidant, and it can be used as industrial temperature element, and this element linear is better, in the time of 0～100 ℃, maximum non-linear deviation is less than 0.5 ℃.R2, R3, R4 and PT100 form the measuring bridge of sensor, and in order to guarantee the stability of bridge output voltage signal, the input voltage of electric bridge is by stabilivolt TL431 surely to 2.5 V.The differential signal that obtains from electric bridge amplifies rear input single-chip microcomputer by two stage amplifer.A brachium pontis of electric bridge adopts adjustable resistance R3, by regulating R3, can adjust the differential voltage signal size that is input to amplifier, is generally used for adjusting zero point.
Operational amplification circuit adopts the LM358 integrated operational amplifier, and in order to prevent the too high nonlinearity erron that brings of single-stage enlargement factor, operational amplification circuit adopts two-stage to amplify, and previous stage is about 10 times, and rear one-level is about 3 times.Temperature is 0～100 ℃ of variation, and when temperature rose, it is large that the PT100 resistance becomes, and the differential signal of input operational amplification circuit becomes large, and the output voltage AV of operational amplification circuit is corresponding to raise.
The invention has the advantages that: adopt single-chip microcomputer SPCE061A as the monitoring temperature core component, combined sensor PT100 completes the sampling to water temperature, eliminate the current temperature value of interference reduction of system by digital filtering technique, and the temperature value that collects is carried out pid calculation process, realized a kind of design of water temperature monitoring system.Test result shows, this system has good temperature control capacity.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the temperature sensing circuit circuit diagram.
Embodiment
Embodiment one
As shown in Figure 1, 2.
Possesses the water temperature monitoring system that water temperature signal amplifies, mainly by governor circuit and the temperature sensing circuit that is connected with governor circuit, telecommunication circuit, relay circuit, formed, described degree sensing circuit is connected with temperature sensor, and telecommunication circuit is connected with PC, relay circuit is connected with electric heater;
Described temperature sensing circuit mainly consists of the operational amplification circuit of the measuring bridge that connects temperature sensor and connection measuring bridge; Described measuring bridge is comprised of adjustable resistance R3, resistance R 2, resistance R 4 and the temperature sensor of series connection successively, described operational amplification circuit consists of LM358 integrated operational amplifier U1A and the LM358 integrated operational amplifier U1B of serial connection, 2 pins of described LM358 integrated operational amplifier U1A are connected near an end of resistance R 2 with adjustable resistance R3, and 3 pins of described LM358 integrated operational amplifier U1A are connected with the end of resistance R 4 near temperature sensor.
Relay circuit also is connected with telecommunication circuit.
Described governor circuit also is connected with the LED lamp.
Described governor circuit comprises single-chip microcomputer SPCE061A, and described single-chip microcomputer SPCE061A is connected with temperature sensing circuit, telecommunication circuit, relay circuit, and described single-chip microcomputer SPCE061A is connected with the LED lamp.
Described governor circuit also comprises the multiplicative operator that is connected with single-chip microcomputer SPCE061A.
Described temperature sensor adopts platinum resistance sensor PT100.
Described telecommunication circuit comprises the MAX232 chip.
Based on foregoing, we can find out, the present invention adopts platinum resistance sensor PT100.Utilize temperature sensing circuit, the temperature data that collects is amplified debugging to be processed, after with data upload to single-chip microcomputer SPCE061A, processing computing through single-chip microcomputer SPCE061A, result is uploaded to PC by the telecommunication circuit that the MAX232 chip forms, simultaneously also data being sent to LED shows, also according to result of calculation output control command control relay circuit, cut-off with the relay in this control relay circuit, reach the driving electric heater with this and heat or stopped heating.
In addition, by native system, because telecommunication circuit in native system adopts the MAX232 chip, the relay that for this reason by PC, also can carry out in the Long-distance Control control relay circuit cut-offs, and reaches the driving electric heater with this and heats or stopped heating.Therefore, can carry out flexibly remote personnel controls voluntarily.
SPCE061A is the microcontroller of a 16 u'nspTM kernels, and this microcontroller not only can realize that basic control function also has some DSP functions simultaneously.The Flas-hROM of the embedded 32k of this chip and the SRAM of 2 k words, also integrated simultaneously ADC, DAC, AGC amplifying circuit etc., be a powerful SOC chip.This chip has the ADC of 8 10 precision in tunnel, and wherein a road is the audio frequency ALT-CH alternate channel, and other 7 tunnels can be used as common AD ALT-CH alternate channel.It can realize simple plus and minus calculation, in order to process complicated arithmetical operation, has also added the hardware multiplication arithmetical unit, can carry out n item inner product operation.The highest system clock can reach 49 MHz, and higher processing speed makes SPCE061A can be very easy to carry out rapidly complicated arithmetic logical operation.What native system adopted is 61 plates, and 61 plates are exactly the development system of SPCE061, and 61 plates except having single-chip minimum system, also have power circuit, voicefrequency circuit, reset circuit and button etc.
The temperature sensor of native system adopts platinum resistance sensor PT100, the physical and chemical performance of platinum resistance thermometer sensor, is very stable in high temperature and Oxidant, and it can be used as industrial temperature element, and this element linear is better, in the time of 0～100 ℃, maximum non-linear deviation is less than 0.5 ℃.R2, R3, R4 and PT100 form the measuring bridge of sensor, and in order to guarantee the stability of bridge output voltage signal, the input voltage of electric bridge is by stabilivolt TL431 surely to 2.5 V.The differential signal that obtains from electric bridge amplifies rear input single-chip microcomputer by two stage amplifer.A brachium pontis of electric bridge adopts adjustable resistance R3, by regulating R3, can adjust the differential voltage signal size that is input to amplifier, is generally used for adjusting zero point.
Operational amplification circuit adopts the LM358 integrated operational amplifier, and in order to prevent the too high nonlinearity erron that brings of single-stage enlargement factor, operational amplification circuit adopts two-stage to amplify, and previous stage is about 10 times, and rear one-level is about 3 times.Temperature is 0～100 ℃ of variation, and when temperature rose, it is large that the PT100 resistance becomes, and the differential signal of input operational amplification circuit becomes large, and the output voltage AV of operational amplification circuit is corresponding to raise.
As mentioned above, can well realize the present invention.
Claims (7)
1. possesses the water temperature monitoring system that water temperature signal amplifies, it is characterized in that: mainly by governor circuit and the temperature sensing circuit that is connected with governor circuit, telecommunication circuit, relay circuit, formed, described degree sensing circuit is connected with temperature sensor, and telecommunication circuit is connected with PC, relay circuit is connected with electric heater;
Described temperature sensing circuit mainly consists of the operational amplification circuit of the measuring bridge that connects temperature sensor and connection measuring bridge; Described measuring bridge is comprised of adjustable resistance R3, resistance R 2, resistance R 4 and the temperature sensor of series connection successively, described operational amplification circuit consists of LM358 integrated operational amplifier U1A and the LM358 integrated operational amplifier U1B of serial connection, 2 pins of described LM358 integrated operational amplifier U1A are connected near an end of resistance R 2 with adjustable resistance R3, and 3 pins of described LM358 integrated operational amplifier U1A are connected with the end of resistance R 4 near temperature sensor.
2. according to claim 1 possess the water temperature monitoring system that water temperature signal amplifies, and it is characterized in that: relay circuit also is connected with telecommunication circuit.
3. according to claim 2 possess the water temperature monitoring system that water temperature signal amplifies, and it is characterized in that: described governor circuit also is connected with the LED lamp.
4. according to claim 3 possess the water temperature monitoring system that water temperature signal amplifies, it is characterized in that: described governor circuit comprises single-chip microcomputer SPCE061A, described single-chip microcomputer SPCE061A is connected with temperature sensing circuit, telecommunication circuit, relay circuit, and described single-chip microcomputer SPCE061A is connected with the LED lamp.
5. according to claim 4 possess the water temperature monitoring system that water temperature signal amplifies, and it is characterized in that: described governor circuit also comprises the multiplicative operator that is connected with single-chip microcomputer SPCE061A.
6. any one describedly possess the water temperature monitoring system that water temperature signal amplifies according to claim 1-5, it is characterized in that: described temperature sensor adopts platinum resistance sensor PT100.
7. any one describedly possess the water temperature monitoring system that water temperature signal amplifies according to claim 1-5, it is characterized in that: described telecommunication circuit comprises the MAX232 chip.
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| CN2012101456811A CN103389753A (en) | 2012-05-11 | 2012-05-11 | Water temperature monitoring system with water temperature signal amplification function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104185311A (en) * | 2014-08-26 | 2014-12-03 | 无锡市华牧机械有限公司 | Heating circuit provided with sampling circuit and used in biomass granulator |
| CN104201773A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Distribution automation terminal provided with standby power source system and used under low temperature environment |
| CN104201764A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Intelligent power distribution terminal back-up source system directly applied under environment of -40 DEG C |
| CN106802678A (en) * | 2017-03-29 | 2017-06-06 | 刘程秀 | A kind of construction method of temperature control system |
| CN109613944A (en) * | 2018-12-27 | 2019-04-12 | 南通理工学院 | Temperature measurement and control device and method thereof |
| CN113143277A (en) * | 2021-01-29 | 2021-07-23 | 西安交通大学医学院第一附属医院 | Urine volume detector and distributed urine volume detection system |
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| GB1425072A (en) * | 1972-12-21 | 1976-02-18 | Vdo Adolf Schindling A | Temperature control switch |
| CN2551023Y (en) * | 2002-06-28 | 2003-05-21 | 胖龙(邯郸)温室工程有限公司 | Comprehensive heating regulator using water for greenhouse |
| CN201147406Y (en) * | 2007-12-12 | 2008-11-12 | 天津工程师范学院 | Hot liquid medicine filling machine |
| CN201307084Y (en) * | 2008-11-06 | 2009-09-09 | 湖南文理学院 | Novel textile fiber moisture testing oven |
| CN202563358U (en) * | 2012-05-11 | 2012-11-28 | 四川优的科技有限公司 | Water temperature monitoring system capable of amplifying water temperature signals |
-
2012
- 2012-05-11 CN CN2012101456811A patent/CN103389753A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| GB1425072A (en) * | 1972-12-21 | 1976-02-18 | Vdo Adolf Schindling A | Temperature control switch |
| CN2551023Y (en) * | 2002-06-28 | 2003-05-21 | 胖龙(邯郸)温室工程有限公司 | Comprehensive heating regulator using water for greenhouse |
| CN201147406Y (en) * | 2007-12-12 | 2008-11-12 | 天津工程师范学院 | Hot liquid medicine filling machine |
| CN201307084Y (en) * | 2008-11-06 | 2009-09-09 | 湖南文理学院 | Novel textile fiber moisture testing oven |
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Non-Patent Citations (1)
| Title |
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| 周超等: "基于SPCE061A的水温监控系统设计", 《电子设计工程》, vol. 19, no. 5, 31 March 2011 (2011-03-31), pages 1 - 3 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104201773A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Distribution automation terminal provided with standby power source system and used under low temperature environment |
| CN104201764A (en) * | 2014-08-19 | 2014-12-10 | 国家电网公司 | Intelligent power distribution terminal back-up source system directly applied under environment of -40 DEG C |
| CN104185311A (en) * | 2014-08-26 | 2014-12-03 | 无锡市华牧机械有限公司 | Heating circuit provided with sampling circuit and used in biomass granulator |
| CN104185311B (en) * | 2014-08-26 | 2016-06-08 | 无锡市华牧机械有限公司 | For biomass granulation machine has the heater circuit of sample circuit |
| CN106802678A (en) * | 2017-03-29 | 2017-06-06 | 刘程秀 | A kind of construction method of temperature control system |
| CN109613944A (en) * | 2018-12-27 | 2019-04-12 | 南通理工学院 | Temperature measurement and control device and method thereof |
| CN113143277A (en) * | 2021-01-29 | 2021-07-23 | 西安交通大学医学院第一附属医院 | Urine volume detector and distributed urine volume detection system |
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Application publication date: 20131113 |