CN206848839U - Apply the thermostatic control system in full-automatic food safely and fast detector - Google Patents
Apply the thermostatic control system in full-automatic food safely and fast detector Download PDFInfo
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- CN206848839U CN206848839U CN201720690772.1U CN201720690772U CN206848839U CN 206848839 U CN206848839 U CN 206848839U CN 201720690772 U CN201720690772 U CN 201720690772U CN 206848839 U CN206848839 U CN 206848839U
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- temperature
- microcontroller
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- control system
- automatic food
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Abstract
The utility model discloses a kind of thermostatic control system applied in full-automatic food safely and fast detector, the thermostatic control system of the full-automatic food safely and fast detector, by setting microcontroller, enter the trip temperature number of degrees using button controller to set, by for the temperature requirement needed for detection, required temperature value can be set using button, temperature data detection module employs RTD PT100 and carries out temperature survey, the voltage signal collected in circuit is converted into data signal by the digital analog converter that precision is 24 to be sent on microcontroller, improve the measurement accuracy in temperature detection.
Description
Technical field
Food temperature control technology field is the utility model is related to, in particular it relates to apply fast safely in full-automatic food
The thermostatic control system of fast detector.
Background technology
With expanding economy and science and technology progress, requirement more and more higher of the people for healthy living quality, especially
It is general to require to be detected sample and reagent only within specified temperatures during food is produced in terms of food manufacturing
Reaction, can just obtain reliable testing result, also, be only possible to the influence for completely cutting off other bacteriums within specified temperatures.At present,
Traditional Constant Temperature Detection system precision in terms of detection temperature is not high enough, and in the control aspect of food context of detection heater element
Also it is relatively difficult, it is impossible to the circuit on control temperature control module well so that the input power of circuit cannot work, and cause to heat
The device heat time is uncontrollable, adds the time used during heating, and operate more complicated.
Utility model content
The purpose of this utility model is, in view of the above-mentioned problems, proposing to apply in full-automatic food safely and fast detector
Thermostatic control system, to overcome traditional Constant Temperature Detection system precision in terms of detection temperature not high enough, and food detect
The control aspect of aspect heater element is also relatively difficult, it is impossible to well control temperature control module on circuit so that circuit it is defeated
Entering power cannot work, and cause the heater heat time uncontrollable, add the time used during heating, and operate more multiple
It is miscellaneous.
To achieve the above object, the technical solution adopted in the utility model is：Apply and safely and fast examined in full-automatic food
The thermostatic control system of instrument is surveyed, is mainly included：Temperature detecting module, microcontroller, button controller, temperature control unit and electricity
Heater, the microcontroller include PID controller and clock unit, and the temperature control unit includes on-off circuit and constant temperature
Control circuit；
The temperature detecting module, button controller and temperature control unit are connected with microcontroller respectively；
After temperature signal is sent to microcontroller by temperature detecting module, PID is carried out to temperature signal using PID controller
Adjust and be sent to clock unit, temperature signal is sent to on-off circuit after clock unit and forms PWM ripples, and PWM ripples are to perseverance
Temperature control circuit is controlled, and constant temperature control circuit finally realizes the regulation to electric heater；
The button controller carries out setting value to temperature needed for detection process, and button controller sends key information
To microcontroller, detection process temperature is adjusted according to key information for microcontroller.
Further, the temperature detecting module includes temperature sensor, digital analog converter, temperature sensing circuit and infrared
Temperature acquisition card, the input of the temperature sensor is connected with temperature sensing circuit and infrared temperature capture card respectively, described
The output end of temperature sensor and the input of digital analog converter connect, and output end and the microcontroller of the digital analog converter connect
Connect.
Further, the temperature sensor is single wire digital intelligent integrated temperature sensor DS18B20, the temperature
Detection circuit includes RTD PT100.
Further, system also includes host computer, and the microcontroller is sent after handling the temperature signal of collection
Real time temperature is shown to host computer, and by host computer, realizes the real-time monitoring of temperature.
Further, system also includes bluetooth module, and controller is sent to indigo plant after handling the temperature signal of collection
Tooth module, sent to outside Bluetooth recipient devices by bluetooth module, temperature is monitored in real time.
Further, the data after processing are sent into temperature-control circuit by the microprocessor, pass through temperature-control circuit
Output port, by processed data to optical coupling isolator carry out switch triggering, so as to realize to electric heater heater strip work(
The control of rate.
Further, the microcontroller is the processor of STMS320LF2407A series.
The thermostatic control system applied in full-automatic food safely and fast detector of various embodiments of the utility model, due to
Mainly include：The thermostatic control system of the full-automatic food safely and fast detector, by setting microcontroller, using by keying
Device processed enters the setting of the trip temperature number of degrees, by the way that for the temperature requirement needed for detection, required temperature can be set using button
Angle value, temperature data detection module employ RTD PT100 and carry out temperature survey, pass through the digital analog converter that precision is 24
The voltage signal collected in circuit is converted into data signal to be sent on microcontroller, improves the survey in temperature detection
Accuracy of measurement.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and a part for constitution instruction, with this practicality
New embodiment is used to explain the utility model together, does not form to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is the system signal structure chart described in the utility model embodiment；
Fig. 2 is the temperature detecting module structure chart described in the utility model embodiment.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellent
Select embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Specifically, as shown in figure 1, applying the thermostatic control system in full-automatic food safely and fast detector, system, bag
Microcontroller 1 and temperature control unit 7 are included, the microcontroller 1 is internally provided with PID controller 3, the PID controller 3
Using incremental timestamp algorithm, operation control can be completed, it is simple with respect to other control algolithms not lose accurate, the PID again
The output end of controller 3 is connected by clock unit 6 with temperature control unit 7, and the inside of the temperature control unit 7 includes
Constant temperature control circuit 9, the input of the constant temperature control circuit 9 are connected by on-off circuit 8 with microcontroller 1, the perseverance
The output end of temperature control circuit 9 is connected with electric heater 10, and the input of the microcontroller 1 electrically connect temperature detection mould
Block 2, the inside of the temperature detecting module 2 include temperature sensor 11, and input and the temperature of the temperature sensor 11 are examined
Slowdown monitoring circuit 13 is connected, and the output end of temperature sensor 11 is connected with digital analog converter 12, and the temperature sensor uses
Single wire digital intelligent integrated temperature sensor DS18B20.It has " one-wire bus " interface mode, only needs an interface pin
Can be communicated with processor, the output end of the digital analog converter 12 be connected respectively to the data terminal of microcontroller 1 with it is micro-
The signal port of PID controller 3 inside controller 1, the output end of the microcontroller 1 are connected by control line with host computer 5
Connect.
Preferably, the input of the temperature sensor 11 also electrically connect infrared temperature capture card 14；The micro-control
The input/output port of device 1 processed also electrically connect bluetooth module 15；The input of the microcontroller 1 is also associated with by key control
Device 4.
The microcontroller 1 is had 30MIPS execution speed, had using the processor of STMS320LF2407A series
Very strong real-time control capability.Up to 32KBFLASHROM and 2.5KBRAM and 40 programmable I/O pin in piece, 4 16
The universal dosed device in position, 5 external interrupts, 16 16 PWM passages.Above-mentioned function, which is enough to ensure that, is meeting other works of detecting instrument
Under conditions of being required, temperature control system can obtain preferably control in real time.
The digital analog converter uses precision as the ADS1256 chips of 24.
Its control method is as follows：Comprise the following steps：
（1）Enter the trip temperature number of degrees first with button controller to set, by for the temperature requirement needed for detection, making
Required temperature value is set with button；
（2）Temperature survey is carried out using RTD PT100, will be gathered by the digital analog converter that precision is 24 in circuit
To voltage signal be converted to data signal and be sent on microcontroller；
（3）It is external upper by being sent to after signal transacting after microprocessor receives the data of temperature collect module feeding
The enterprising trip temperature of machine is monitored in real time, while the data after processing are sent into temperature-control circuit by microprocessor, by output port,
Processed data are subjected to switch triggering to optical coupling isolator, so as to realize the control to heater strip power in circuit, finally
Realize the requirement of constant temperature
Specifically used mode and advantage：The thermostatic control system of the full-automatic food safely and fast detector, passes through setting
Microcontroller, enter the trip temperature number of degrees using button controller and set, by that for the temperature requirement needed for detection, can use
Button sets required temperature value, and temperature data detection module employs RTD PT100 and carries out temperature survey, pass through precision
The voltage signal collected in circuit is converted into data signal for the digital analog converters of 24 to be sent on microcontroller, improved
Measurement accuracy in temperature detection.After microprocessor receives the data of temperature collect module feeding, after signal transacting
The enterprising trip temperature of external host computer is sent to monitor in real time.The data after processing are sent into temperature-control circuit by microprocessor simultaneously,
By output port, processed data are subjected to switch triggering to optical coupling isolator, so as to realize to heater strip work(in circuit
The control of rate, finally realize the requirement of constant temperature.
Micro controller data processing is mainly set and detected to the parameter of modules by software programming.These ginsengs
Count the temperature collected having in button sets target temperature, temperature sensing circuit, PID arithmetic data etc..Pass through microprocessor
Carry out the output of PWM ripples and realize to control the heated at constant temperature of temperature control circuit, whole temperature control system has that measuring speed is fast, anti-interference energy
The advantages that power is strong, measurement is accurate, low in energy consumption, realizes intelligent temperature incubation function well, makes system stable, and to measurement after
As a result can timely monitoring display, real-time is fine
RTD PT100 is manufactured using the physical characteristic that the resistance value of metal platinum (Pt) is varied with temperature and changed
Temperature sensor.The key that temperature survey is carried out using RTD as temperature element is will energy accurately measure RTD sensing
The resistance value of device, realize that component drift and RTD PT100 precision are calibrated using micro controller system Corrective control scheme, most
Noise cancellation is realized using MLS numerical algorithms afterwards, substantially increases temperature measurement accuracy and stability, current existing thermometric
Although system thermometric resolution ratio can reach 0.01 DEG C, the thermometric degree of accuracy only reaches 0.1 DEG C, does not solve basic precision and asks
Topic, and system power dissipation is larger.
It is that analog circuit is controlled using the numeral output of microprocessor using pulse width modulation (PWM)
A kind of very effective technology, this mode can make the output voltage of power supply keep constant in operation conditions change.
Following beneficial effect can at least be reached：The thermostatic control system of the full-automatic food safely and fast detector, lead to
Setting microcontroller is crossed, entering the trip temperature number of degrees using button controller is set, can by for the temperature requirement needed for detection
To set required temperature value using button, temperature data detection module employs RTD PT100 and carries out temperature survey, leads to
It is that the voltage signal collected in circuit is converted to data signal and is sent to microcontroller by the digital analog converter of 24 to cross precision
On, improve the measurement accuracy in temperature detection.The key that temperature survey is carried out using RTD as temperature element is to want energy
The resistance value of accurately measure platinum sensor, using micro controller system Corrective control scheme realize component drift and
RTD PT100 precision calibrate, noise cancellation is finally realized using MLS numerical algorithms, substantially increase temperature measurement accuracy and
Stability, although current existing temp measuring system thermometric resolution ratio can reach 0.01 DEG C, the thermometric degree of accuracy only reaches 0.1
DEG C, do not solve basic precision problem, and system power dissipation is larger.
It is that analog circuit is controlled using the numeral output of microprocessor using pulse width modulation (PWM)
A kind of very effective technology, this mode can make the output voltage of power supply keep constant in operation conditions change.Microprocessor
After device receives the data of temperature collect module feeding, the enterprising trip temperature of external host computer will be sent to after signal transacting and is supervised in real time
Control.The data after processing are sent into temperature-control circuit by microprocessor simultaneously, by output port, by processed data to light
Coupling isolator carries out switch triggering, so as to realize the control to heater strip power in circuit, finally realizes the requirement of constant temperature.Micro-control
Device data processing processed is mainly set and detected to the parameter of modules by software programming.These parameters have by key assignments
The temperature collected, PID arithmetic data in target temperature, temperature sensing circuit etc..PWM ripple outputs are carried out by microprocessor
Realize and the heated at constant temperature of temperature control circuit is controlled, whole temperature control system has fast measuring speed, strong antijamming capability, measurement essence
The advantages that accurate, low in energy consumption, realize intelligent temperature incubation function well, make system stable, and to the result after measurement can and
When monitoring display, real-time is fine.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Carry out equivalent substitution.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (8)
1. apply the thermostatic control system in full-automatic food safely and fast detector, it is characterised in that including temperature detection mould
Block, microcontroller, button controller, temperature control unit and electric heater, the microcontroller include PID controller and clock
Unit, the temperature control unit include on-off circuit and constant temperature control circuit；
The temperature detecting module, button controller and temperature control unit are connected with microcontroller respectively；
After temperature signal is sent to microcontroller by temperature detecting module, PID regulations are carried out to temperature signal using PID controller
And clock unit is sent to, temperature signal is sent to on-off circuit after clock unit and forms PWM ripples, and PWM ripples are to constant temperature control
Circuit processed is controlled, and constant temperature control circuit finally realizes the regulation to electric heater；
The button controller carries out setting value to temperature needed for detection process, and button controller sends key information to micro-
Detection process temperature is adjusted according to key information for controller, microcontroller.
2. the thermostatic control system according to claim 1 applied in full-automatic food safely and fast detector, its feature
It is, the temperature detecting module includes temperature sensor, digital analog converter, temperature sensing circuit and infrared temperature capture card,
The input of the temperature sensor is connected with temperature sensing circuit and infrared temperature capture card respectively, the temperature sensor
The input of output end and digital analog converter is connected, and the output end of the digital analog converter is connected with microcontroller.
3. the thermostatic control system according to claim 2 applied in full-automatic food safely and fast detector, its feature
It is, the temperature sensor is single wire digital intelligent integrated temperature sensor DS18B20, and the temperature sensing circuit includes
RTD PT100.
4. the thermostatic control system according to claim 3 applied in full-automatic food safely and fast detector, its feature
It is, system also includes host computer, and the microcontroller is sent to host computer after handling the temperature signal of collection, and by
Host computer shows real time temperature, realizes the real-time monitoring of temperature.
5. the thermostatic control system according to claim 4 applied in full-automatic food safely and fast detector, its feature
It is, system also includes bluetooth module, and controller is sent to bluetooth module after handling the temperature signal of collection, by bluetooth
Module is sent to outside Bluetooth recipient devices, and temperature is monitored in real time.
6. applying the thermostatic control system in full-automatic food safely and fast detector according to claim 1 or 5, it is special
Sign is, the data after processing are sent into temperature-control circuit by the microcontroller, by the output port of temperature-control circuit,
Processed data are subjected to switch triggering to optical coupling isolator, so as to realize the control to electric heater heater strip power.
7. the thermostatic control system according to claim 2 applied in full-automatic food safely and fast detector, its feature
It is, the digital analog converter is specially the ADS1256 chips that precision is 24.
8. the thermostatic control system according to claim 6 applied in full-automatic food safely and fast detector, its feature
It is, the microcontroller is the processor of STMS320LF2407A series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720690772.1U CN206848839U (en) | 2017-06-14 | 2017-06-14 | Apply the thermostatic control system in full-automatic food safely and fast detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720690772.1U CN206848839U (en) | 2017-06-14 | 2017-06-14 | Apply the thermostatic control system in full-automatic food safely and fast detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206848839U true CN206848839U (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720690772.1U Expired - Fee Related CN206848839U (en) | 2017-06-14 | 2017-06-14 | Apply the thermostatic control system in full-automatic food safely and fast detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168413A (en) * | 2017-06-14 | 2017-09-15 | 中国农业科学院兰州畜牧与兽药研究所 | Apply the thermostatic control system in full-automatic food safely and fast detector |
-
2017
- 2017-06-14 CN CN201720690772.1U patent/CN206848839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107168413A (en) * | 2017-06-14 | 2017-09-15 | 中国农业科学院兰州畜牧与兽药研究所 | Apply the thermostatic control system in full-automatic food safely and fast detector |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |