CN107972444A - Refrigerator car temperature control system - Google Patents
Refrigerator car temperature control system Download PDFInfo
- Publication number
- CN107972444A CN107972444A CN201610921911.7A CN201610921911A CN107972444A CN 107972444 A CN107972444 A CN 107972444A CN 201610921911 A CN201610921911 A CN 201610921911A CN 107972444 A CN107972444 A CN 107972444A
- Authority
- CN
- China
- Prior art keywords
- refrigerator car
- temperature
- microcontroller
- control system
- car
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00785—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models by the detection of humidity or frost
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a kind of refrigerator car temperature control system, whole refrigerator car environmental monitoring system is to monitor various envirment factors on-line by multiple sensors such as temperature and humidities, then microcontroller S3C2410 is transmitted further to after A/D converter is converted to digital signal, microcontroller is according to its sampled result, compared with value set in advance, handle by analysis, then other executing agencies such as corresponding control algolithm output control signal, driving compressor, wind turbine are used to carry out the adjusting of respective environment parameter.The present invention realizes refrigerator car temperature automatic control.
Description
Technical field
The invention belongs to special-purpose vehicle field, more particularly to a kind of refrigerator car temperature control system.
Background technology
Refrigerator car is the closed transport van for transport frozen or fresh-keeping cargo, is equipped with the system of refrigeration unit
Device for cooling and the refrigeration special transport automobile in the heat-insulated railway carriage or compartment of polyurethane, are usually used in transport frozen food (van cooler), dairy produce (milk products
Transport vehicle), vegetable and fruit (fresh goods transport vehicle), vaccine medicine (vaccine transport vehicle) etc..Refrigerator car by special-purpose automobile chassis row
Part is walked, (is generally made of with heat-insulation and heat-preservation carriage body polyurethane material, fiberglass, color steel, stainless steel etc.), refrigeration unit,
The component such as moisture recorder forms in compartment, for the vehicle of particular/special requirement, such as meat hook car, can install meat hook, by the waist, aluminium alloy additional
Guide rail, ventilation slot etc. choose to install part.The temperature control of refrigerator car is the core of refrigerator car.
The content of the invention
The defects of for the prior art, the present invention provides a kind of refrigerator car temperature control system.
A kind of refrigerator car temperature control system, whole refrigerator car environmental monitoring system are by a variety of biographies such as temperature and humidity
Sensor monitors various envirment factors on-line, is then transmitted further to microcontroller after A/D converter is converted to digital signal
S3C2410, microcontroller compared with value set in advance, are handled, then using corresponding by analysis according to its sampled result
Control algolithm output control signal, driving compressor, other executing agencies such as wind turbine carry out the adjusting of respective environment parameter；Temperature
Degree acquisition module is responsible in online acquisition refrigerator car, car is outer and the temperature information of the multiple spot such as compressed gas, and is collected
Information be transferred to controller as control compressor operating foundation.
Refrigerating of convertible frequency air conditioner system is the value collected according to temperature sensor, after microcontroller analysis calculates, output
The action of corresponding control signals compressor related to electric expansion valve etc. executing agency, thus to refrigeration environment inside car temperature into
Row is adjusted.Two motors are controlled respectively by two relays K1 and K2, and one is used to, when refrigeration vehicle humidity is higher, open
Draft fan；Another is used for when humidity is relatively low, opens humidifier.
The beneficial effects of the invention are as follows：Using digital temperature sensor and analog-digital converter, with HSM40 humidity sensor phases
With reference to using Data Transport Protocol, carrying out on-line checking to ambient temperature and humidity, on the one hand greatly save the I/O mouths of controller
Resource, on the other hand also simplify wiring, reduce mutual interference, ensure that the accuracy of information gathering.
Brief description of the drawings
Fig. 1 is the structure diagram of control system
Fig. 2 is schematic diagram of refrigerating.
Embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail, make the above and other purpose of the present invention, feature and advantage will become apparent from.Complete
Identical reference numeral indicates identical part in portion's attached drawing.Not deliberately attached drawing drawn to scale, it is preferred that emphasis is show this hair
Bright purport.
As shown in Figure 1, 2, whole refrigerator car environmental monitoring system is supervised online by multiple sensors such as temperature and humidities
Various envirment factors are surveyed, microcontroller S3C2410, micro-control are then transmitted further to after A/D converter is converted to digital signal
Device processed compared with people's value set in advance, is handled, then calculated using corresponding control according to its sampled result by analysis
Other executing agencies such as method output control signal, driving compressor, wind turbine carry out the adjusting of respective environment parameter.Wherein, it is different
Requirement of the product to refrigerator car environmental parameter can be set by touch-screen, and operating personnel make choice in transport, once
System breaks down, such as compressor damage, environment temperature are excessive, and controller immediately prompted by output alarm signal.In addition,
Remote monitoring module can be added in systems to realize the remote supervisory to refrigerator car environment.
Temperature collecting module is one of link the most key in the system, it is responsible in online acquisition refrigerator car, outside car
And the temperature information of the multiple spot such as compressed gas, and the information collected is transferred to controller as control compressor operating
Foundation.Air humidity is also the very important environmental parameter of another in refrigerator car environmental monitoring system.Because humidity sensor
Device must could directly transmit moisture signal with moisture, therefore humidity sensor can only be directly exposed in environment to be measured,
Service life is also relatively short.Therefore for the system when selecting humidity sensor, most basic requirement is it to good environmental adaptability, survey
Wet scope is wide, working stability, reliable, and the requirement to precision is within 3%.
Datagraphic is shown using the average value of environment inside car parameter as display object, is set by timer and is shown the time
Interval.Because three data acquisition, display and storage processes are designed to multithreading realization in the system.Same priority
The concept of thread passage time piece performs in turn.After a certain thread obtains processor, specific a period of time can be performed, so
After reschedule.Per thread has a timeslice size, and OEM can change the size of this value when kernel initialization.
Distributing to the timeslice size of thread can use CeGetThreadQuantum functions to obtain.In order to protect data in two thread wheels
Stream is not modified during performing, and tri- kinds of kernel mechanism of Mutex, Event and Semaphore are provided in Windows CE to realize
Synchronization between thread.In addition, Windows CE additionally provide the synchronous method under two kinds of User spaces:Critical
Section and Interlocked Functions.The all no corresponding Windows CE kernel objects of both approaches, because
This it be unable to striding course.
Refrigerating of convertible frequency air conditioner system is the value collected according to temperature sensor, after microcontroller analysis calculates, output
The action of corresponding control signals compressor related to electric expansion valve etc. executing agency, thus to refrigeration environment inside car temperature into
Row is adjusted.The system controls two motors respectively by two relays K1 and K2, and one is used for when refrigeration vehicle humidity is higher
When, open draft fan；Another is used for when humidity is relatively low, opens humidifier.System brings disaster upon clutch by two photoelectricity will be micro-
Controller and the isolation of the circuit of executing agency, are influenced with reducing the high current of executing agency caused by microcontroller.Q1 and Q2
It is two triodes, for amplifying electric current, light emitting diode DS1 and DS2 are used for the working status of indicating relay.
Many details are elaborated in the above description in order to fully understand the present invention.But above description is only
Presently preferred embodiments of the present invention, the invention can be embodied in many other ways as described herein, therefore this
Invention from specific implementation disclosed above limitation.Any those skilled in the art are not departing from the technology of the present invention at the same time
In the case of aspects, all technical solution of the present invention is made using the methods and technical content of the disclosure above many possible
Changes and modifications, or it is revised as the equivalent embodiment of equivalent variations.Every content without departing from technical solution of the present invention, according to this
The technical spirit of invention still falls within skill of the present invention to any simple modifications, equivalents, and modifications made for any of the above embodiments
In the range of the protection of art scheme.
Claims (3)
1. a kind of refrigerator car temperature control system, it is characterised in that whole refrigerator car environmental monitoring system is by temperature and wet
The multiple sensors such as degree monitor various envirment factors on-line, are then transmitted further to after A/D converter is converted to digital signal
Microcontroller S3C2410, microcontroller compared with value set in advance, are handled, then by analysis according to its sampled result
Using corresponding control algolithm output control signal, other executing agencies such as driving compressor, wind turbine carry out respective environment parameter
Adjusting；Temperature collecting module is responsible in online acquisition refrigerator car, car is outer and the temperature information of the multiple spot such as compressed gas, and will
Its information collected is transferred to foundation of the controller as control compressor operating.
2. refrigerator car temperature control system according to claim 1, it is characterised in that refrigerating of convertible frequency air conditioner system is basis
The value that temperature sensor collects, after microcontroller analysis calculates, exports corresponding control signals compressor and electronics is swollen
The correlation such as swollen valve executing agency action, so that refrigeration environment inside car temperature be adjusted.
3. refrigerator car temperature control system according to claim 1, it is characterised in that pass through two K1 and K2 points of relays
Not Kong Zhi two motors, one be used for when refrigerate vehicle humidity it is higher when, open draft fan；Another is used for when humidity is relatively low
When, open humidifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921911.7A CN107972444A (en) | 2016-10-21 | 2016-10-21 | Refrigerator car temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921911.7A CN107972444A (en) | 2016-10-21 | 2016-10-21 | Refrigerator car temperature control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107972444A true CN107972444A (en) | 2018-05-01 |
Family
ID=62004666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610921911.7A Pending CN107972444A (en) | 2016-10-21 | 2016-10-21 | Refrigerator car temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107972444A (en) |
-
2016
- 2016-10-21 CN CN201610921911.7A patent/CN107972444A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180501 |
|
| WD01 | Invention patent application deemed withdrawn after publication |