CN217455978U - Locomotive air conditioner control system and locomotive air conditioner - Google Patents
Locomotive air conditioner control system and locomotive air conditioner Download PDFInfo
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- CN217455978U CN217455978U CN202123436991.2U CN202123436991U CN217455978U CN 217455978 U CN217455978 U CN 217455978U CN 202123436991 U CN202123436991 U CN 202123436991U CN 217455978 U CN217455978 U CN 217455978U
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Abstract
The application relates to a locomotive air conditioner control system and a locomotive air conditioner. The locomotive air conditioner control system comprises: a variable frequency power supply; the variable frequency power supply is used for connecting a power supply; a variable frequency compressor; the variable frequency compressor is connected with a variable frequency power supply; a human-computer interaction module; the man-machine interaction module is used for storing a user account and outputting air conditioner working parameters corresponding to the user account under the condition that the user account logs in; a controller; the controller is respectively connected with the variable frequency power supply, the variable frequency compressor and the man-machine interaction module; and the controller receives the working parameters of the air conditioner and controls the variable frequency power supply to drive the variable frequency compressor to operate according to the working parameters of the air conditioner. The stepless temperature regulation of the air conditioner is realized, the room temperature of the locomotive cab can reach the temperature which is habituated to a driver and suitable for the driver, the practicability of the locomotive air conditioning system is effectively improved, and the application scene is greatly increased.
Description
Technical Field
The application relates to the technical field of vehicle-mounted air conditioner control, in particular to a locomotive air conditioner control system and a locomotive air conditioner.
Background
The air conditioning system arranged in the locomotive cab can improve the microclimate condition of the cab and provide a good and comfortable working environment for a locomotive driver; today of high-speed railway development in China, the method has very important practical significance for ensuring high-speed and safe operation of the locomotive, so that the development of a locomotive air conditioning system with high comfort, high efficiency, reliability and intellectualization is necessary. For a control system of a traditional locomotive air conditioner, after the locomotive air conditioner is powered on, the default working parameters are started to operate, different drivers and drivers may have different temperature requirements, and therefore the locomotive drivers are required to reset air conditioner parameters every time, and certain inconvenience is brought.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the existing locomotive air conditioning system has the defects of low practicability and poor convenience.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a locomotive air conditioner control system and a locomotive air conditioner.
A locomotive air conditioning control system comprising:
a variable frequency power supply; the variable frequency power supply is used for connecting a power supply;
a variable frequency compressor; the variable frequency compressor is connected with a variable frequency power supply;
a human-computer interaction module; the man-machine interaction module is used for storing a user account and outputting air conditioner working parameters corresponding to the user account under the condition that the user account logs in;
a controller; the controller is respectively connected with the variable frequency power supply, the variable frequency compressor and the man-machine interaction module; and the controller receives the working parameters of the air conditioner and controls the variable frequency power supply to drive the variable frequency compressor to operate according to the working parameters of the air conditioner.
In one embodiment, the human-computer interaction module comprises a memory and a processor;
the processor is respectively connected with the controller and the memory.
In one embodiment, the human-computer interaction module further comprises a human-computer interaction interface;
the human-computer interaction interface is connected with the processor.
In one embodiment, the human-computer interaction interface is a touch display screen.
In one embodiment, the system further comprises an EC fan;
the EC fan is connected with the controller.
In one embodiment, the device further comprises a temperature sensor;
the temperature sensor is connected with the controller.
In one embodiment, the device further comprises a humidity sensor;
the humidity sensor is connected with the controller.
In one of the embodiments, the inverter compressor is of the scroll, rotary, reciprocating, semi-hermetic, open, screw, centrifugal or axial type.
In one embodiment, the variable frequency power supply drives the variable frequency compressor in an SVPWM manner.
A locomotive air conditioner comprises the locomotive air conditioner control system.
One of the above technical solutions has at least the following advantages and beneficial effects:
the variable frequency power supply can convert a power supply into an alternating current power supply with any frequency and any voltage, the human-computer interaction module is used for storing a user account corresponding to a locomotive driver, outputting an air conditioner working parameter corresponding to the user account to the controller under the condition that the user account logs in, and the controller adjusts the variable frequency power supply to output corresponding working voltage and working current according to the received air conditioner working parameter under the condition that the air conditioner working parameter output by the human-computer interaction module is received, so that the variable frequency compressor is driven to operate, modulated refrigerant modulation mass flow and refrigeration and heating output are generated, and corresponding refrigeration or heating requirements are met, so that the room temperature of a locomotive cab can reach the temperature which is habituated and favored by the driver, the practicability and convenience of the locomotive air conditioning system are effectively improved, application scenes are greatly increased, and the starting currents of the variable frequency compressor and the variable frequency power supply are small, The noise is little, and stability is higher, has effectively ensured locomotive air conditioning system's operational safety, also can realize the stepless temperature regulation of air conditioner, has further improved locomotive air conditioning system's practicality and convenience.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a first block diagram of an embodiment of a locomotive air conditioning control system;
FIG. 2 is a block diagram of a second configuration of an air conditioning control system for a locomotive according to one embodiment;
FIG. 3 is a third block diagram illustrating an embodiment of a locomotive air conditioning control system;
FIG. 4 is a block diagram of an alternative embodiment of a locomotive air conditioner.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
In one embodiment, as shown in fig. 1, there is provided a locomotive air conditioning control system, which may include:
a variable frequency power supply; the variable frequency power supply is used for connecting a power supply;
a variable frequency compressor; the variable frequency compressor is connected with a variable frequency power supply;
a human-computer interaction module; the man-machine interaction module is used for storing a user account and outputting air conditioner working parameters corresponding to the user account under the condition that the user account logs in;
a controller; the controller is respectively connected with the variable frequency power supply, the variable frequency compressor and the man-machine interaction module; and the controller receives the working parameters of the air conditioner and controls the variable frequency power supply to drive the variable frequency compressor to operate according to the working parameters of the air conditioner.
Wherein, the power supply can be a power frequency power supply; the air conditioner operating parameter may include a target temperature; the variable frequency power supply is an electrical device for converting a power frequency power supply into an alternating current power supply with any frequency and any voltage and current, and is mainly used for adjusting the power of a compressor motor and realizing the variable speed operation of the compressor motor; the variable frequency compressor is a compressor which has a constant relative rotating speed, the rotating speed of the variable frequency compressor is continuously adjusted within a certain range through a control mode or means, and the output energy can be continuously changed; the human-computer interaction module can be used for storing user account numbers, drivers of each locomotive can own the corresponding user account numbers, and target temperature set by the user account numbers can be recorded when the drivers of the locomotives log in the user account numbers.
In one example, the variable frequency power supply may drive the variable frequency compressor in a Space Vector Pulse Width Modulation (SVPWM) manner.
The SVPWM mode takes an ideal flux linkage circle of a stator of a three-phase symmetrical motor as a reference standard when three-phase symmetrical sine-wave voltage is supplied, and properly switches different switching modes of a three-phase inverter, so that a PWM (Pulse width modulation) wave is formed, and an accurate flux linkage circle is tracked by a formed actual flux linkage vector. The traditional Sinusoidal Pulse Width Modulation (SPWM) method starts from the power supply perspective to generate a frequency and voltage adjustable sine wave power supply, while the SVPWM method considers the inverter system and the asynchronous motor as a whole, and the model is simpler and is convenient for the real-time control of the microprocessor. The variable frequency power supply has a soft start function, so that the variable frequency compressor has the characteristics of small starting current, small noise and the like.
In another example, the inverter compressor may be of the scroll, rotary, reciprocating, semi-hermetic, open, screw, centrifugal, or axial type. These types of compressors utilize a special drive to control the speed of the compressor motor (in revolutions per second), and the inverter compressors can be operated at different speeds to produce a modulated refrigerant mass flow and a cooling or heating output.
Specifically, after the locomotive is powered on, a locomotive driver can log in a user account of the locomotive driver through the human-computer interaction module and set a corresponding target temperature; the human-computer interaction module stores the target temperature and sends the target temperature to the controller; the controller controls the variable frequency power supply to drive the variable frequency compressor to refrigerate or heat according to the target temperature; the next time the user account logs in, the man-machine interaction module reads the historical set temperature corresponding to the user account and sends the historical set temperature serving as the target temperature to the controller; if the human-computer interaction module has a user account number for logging in and updates the temperature setting, the human-computer interaction module updates the target temperature corresponding to the stored user account number and sends the target temperature to the controller, so that the controller controls the variable-frequency power supply to drive the variable-frequency compressor to refrigerate or heat, and the temperature in the cab of the locomotive reaches the target temperature.
If the locomotive is powered on, the man-machine interaction module does not receive the target temperature set by the outside, the man-machine interaction module reads the set temperature of the user account which is stored in the locomotive and is logged in last time as the target temperature in a default mode, and the man-machine interaction module sends the default target temperature to the controller, so that the controller controls the variable frequency power supply to drive the variable frequency compressor to operate, and corresponding refrigerating or heating requirements are met. If no user account logs in after the locomotive is powered off last time, the human body interaction module selects the human body suitable temperature of 24 ℃ as the target temperature and sends the target temperature to the intelligent air conditioner controller for temperature adjustment. Therefore, when different drivers drive the vehicle, the driver can switch to the account number set by the driver, and the temperature setting which feels comfortable is stored, so that the air conditioner can operate in a satisfactory interval; when a driver continuously operates the vehicle for a long time, the driver does not need to try to log in the account after getting on the vehicle every time, and the last user account setting value is enabled by default.
The specific process of the controller controlling the variable frequency power supply to drive the variable frequency compressor to operate can be as follows:
the controller sends a corresponding command to the variable frequency power supply according to the target temperature and the current temperature under the condition of receiving the target temperature, and controls a compressor motor to work; the variable frequency air conditioner power supply controls the variable frequency compressor to work through SVPWM output voltage, and collects a current value and a voltage value; the variable frequency compressor feeds back a speed value of a motor of the compressor to the controller, and the variable frequency power supply also feeds back a current value and a voltage value to the controller; the controller adjusts the operation of the variable frequency power supply according to the bus current value and the voltage value of the variable frequency compressor and the motor speed value PI (proportional integral) of the variable frequency compressor, and then drives the variable frequency compressor to operate.
The specific control flow of the controller is as follows:
(1) the controller firstly calculates the target working voltage and the target working current of the variable frequency power supply according to the received target temperature and the current temperature.
(2) And the controller outputs and controls the working voltage and the working current of the variable frequency power supply after PI regulation according to the motor speed fed back by the current variable frequency compressor, the output working voltage and the output working current detected by the variable frequency power supply.
(3) And when the difference between the target temperature of the required condition and the current temperature is larger, the target working voltage and the target working current of the variable frequency power supply calculated by the controller are correspondingly increased.
(4) And when the difference between the target temperature of the required condition and the current temperature is smaller, the target working voltage and the target working current of the variable frequency power supply calculated by the controller are correspondingly smaller.
(5) When the motor speed of the variable frequency compressor exceeds the preset speed, the working voltage and the working current of the variable frequency power supply output after the adjustment of the controller PI are correspondingly reduced.
(6) And when the motor speed of the variable-frequency compressor is lower than the preset speed, the working voltage and the working current of the variable-frequency power supply output after the adjustment of the controller PI are correspondingly increased.
(7) When the working voltage output to the variable frequency compressor by the variable frequency power supply is smaller than the preset voltage or the working current is smaller than the preset current, the working voltage and the working current of the variable frequency power supply output after the adjustment of the controller PI become larger correspondingly.
(8) When the working voltage output to the variable frequency compressor by the variable frequency power supply is greater than the preset voltage or the working current is greater than the preset current, the working voltage and the working current of the variable frequency power supply output after the adjustment of the controller PI become correspondingly large.
The human-computer interaction module outputs air conditioner working parameters corresponding to the user account under the condition that the user account logs in, and the variable frequency power supply of the controller drives the variable frequency compressor to operate according to the air conditioner working parameters under the condition that the controller receives the air conditioner working parameters output by the human-computer interaction module. According to the method and the system, the temperature preferences of different locomotive drivers are recorded through the human-computer interaction module, and the temperature is automatically adjusted according to the temperature preferred by the locomotive drivers by logging in the user account, so that the convenience of the locomotive air conditioning system is greatly improved, and the use feeling is improved; moreover, the variable frequency power supply can convert a power frequency power supply into an alternating current power supply with any frequency and any voltage, and the variable frequency compressor is driven in an SVPWM mode, so that the variable frequency power supply has a soft start function, the starting current of the variable frequency compressor is small, the noise is low, and the variable frequency compressor can run at different speeds, so that stepless temperature regulation of an air conditioner is realized, and the practicability and convenience of a locomotive air conditioning system are effectively improved.
In one embodiment, the locomotive air conditioning control system may further comprise an EC fan;
the EC fan is connected with the controller.
In one example, the air conditioning operating parameter may also include a target wind speed.
The EC fan is a centrifugal fan adopting a digital brushless direct current outer rotor motor, a small driver is arranged in the fan, power conversion and motor drive control can be realized, and the EC fan also has an external communication function.
Specifically, the fans adopted by the locomotive air conditioning unit are three-phase asynchronous motors, and the problems of large starting current, unadjustable fan rotating speed, large noise, large volume, heavy weight and the like exist.
The air conditioner air speed can be set through the human-computer interaction module, and the human-computer interaction module outputs the target air speed under the condition that the target air speed set by a user is received; under the condition that the controller receives the target wind speed, the controller adjusts the running of the EC fan according to the target wind speed so that the fan reaches the wind speed set by a user; the man-machine interaction module also stores the wind speed, and outputs the historical wind speed set by the user account as a target wind speed to the controller to control the EC fan to adjust the wind speed by default when the user account logs in and the wind speed is not adjusted; and when the locomotive is powered on but the account is not logged in, the man-machine interaction module automatically sets the wind speed set by the previous user account as the target wind speed.
This application adopts the EC fan to carry out infinitely variable control to the wind speed, and energy-efficient, and it is convenient to maintain, very convenient use.
In one embodiment, the locomotive air conditioning control system may further comprise a temperature sensor;
the temperature sensor is connected with the controller.
Specifically, the temperature sensor can monitor the external temperature of the air conditioner in real time, the detected current temperature is sent to the controller, and the controller can calculate the target working voltage and the target working current of the variable frequency power supply according to the current temperature and the target temperature, so that the variable frequency power supply is continuously controlled to drive the variable frequency compressor to operate, and the external temperature of the air conditioner reaches and is stabilized at the target temperature.
In one embodiment, as shown in FIG. 2, the locomotive air conditioning control system may further include a humidity sensor;
the humidity sensor is connected with the controller.
The humidity sensor can detect the air humidity outside the air conditioner in real time and send the detected humidity to the controller.
Specifically, humidity transducer real-time supervision air conditioner outside air humidity to send the humidity that detects for the controller, the controller transmits this humidity to human-computer interaction module under the condition of receiving humidity, and human-computer interaction module can show this humidity through the human-computer interaction interface, thereby is convenient for the driver to know the humid degree of air, has improved user experience.
In one embodiment, as shown in FIG. 3, the human interaction module may include a memory and a processor;
the processor is respectively connected with the controller and the memory.
In one example, the human-computer interaction module can further comprise a human-computer interaction interface;
the human-computer interaction interface is connected with the processor.
In one particular example, the human-computer interaction interface may be a touch display screen.
Specifically, a user can log in a user account through a human-computer interaction interface, and can set air conditioner working parameters such as a target temperature and a target air speed through the human-computer interaction interface; the memory can store user account information and air conditioner working parameters such as target temperature and target wind speed set by a user; the processor can receive the air conditioner working parameters set by the user on the man-machine interaction interface and input the air conditioner working parameters into the memory for storage, and can also respond to other related operations performed by the user on the man-machine interaction interface; the processor can also read the stored air conditioner working parameters from the memory and send the air conditioner working parameters to the controller for processing. The man-machine interaction interface can also display various current air conditioner working parameters, working states, temperature and humidity conditions and the like of the air conditioner, and can also display fault information and send an alarm under the condition that the air conditioner fails so that a worker can maintain the air conditioner conveniently.
Furthermore, information CRC (cyclic redundancy check) and information message counting functions are added in the aspect of communication reliability design among the controller, the variable-frequency power supply, the variable-frequency compressor and the EC fan, and meanwhile, communication information network management is added for preventing communication conflicts. When the controller detects that the communication with the variable-frequency power supply, the variable-frequency compressor and the EC fan is lost, the corresponding network node shortens the sending period and sends the corresponding message in a complementary manner; when the controller detects that the number of times of communication loss with the variable-frequency power supply, the variable-frequency compressor and the EC fan exceeds the set number of times Lost _ delt, the controller can reset or restart the corresponding component with message loss. When the component with the corresponding message loss is restarted for 3 times and the message loss occurs, the controller can carry out node disconnection processing on the corresponding component; and the controller can transmit the corresponding message loss fault information to the man-machine interaction module, and the man-machine interaction module stores and displays the message loss fault information.
By adopting the variable-frequency power supply, the variable-frequency compressor and the digital fan, frequent starting is reduced, hard wire layout is eliminated, and reliability is improved; the variable frequency power supply has a soft start effect, so that the starting current of the variable frequency compressor is small, the noise is low, and the operation safety is higher; the combination of the variable frequency power supply and the variable frequency compressor can realize the stepless temperature regulation of the air conditioner; this application has still adopted the EC fan to carry out infinitely variable control to the wind speed, has increased air conditioner control system's practicality to this application passes through human-computer interaction module storage user account, and according to the operation of the air conditioner working parameter automatically regulated variable frequency power supply that user account corresponds and inverter compressor, makes temperature regulation more be fit for driver's hobby, has greatly strengthened convenience, practicality and the comfort level that the air conditioner used.
In one embodiment, as shown in FIG. 4, a locomotive air conditioner is provided and may include the locomotive air conditioner control system described above.
In one specific embodiment, the locomotive air conditioner can have functions of cooling, heating, ventilation and the like, has four modes of automation, manual operation, debugging and stopping, and can select and set an operation mode according to requirements, wherein the automatic mode comprises the following steps: there are three automatic modes to choose from: warming, conventional and cooling, automatic temperature modes preferred by drivers can be preset through a human-computer interaction interface, the working mode of the unit is determined by a controller according to the external environment climate conditions, and the refrigerating and heating quantity of the unit is automatically adjusted; manual mode: in a manual mode, the controller determines the working mode of the air conditioning unit according to the temperature set by the human-computer interaction interface, automatically adjusts the refrigerating and heating quantity of the air conditioner, and ensures that the difference range between the indoor temperature and the set value is not more than +/-1 ℃; debugging mode: the debugging mode can be set through the human-computer interaction interface, the debugging mode is mainly used for routine inspection of the locomotive air conditioner before the locomotive goes out or during maintenance, each data value can be observed through the human-computer interaction interface, and a routine log report can be downloaded through the controller; a stop mode: and setting the shutdown mode of the air conditioning unit through a human-computer interaction interface.
The locomotive air conditioner can realize stepless regulation of temperature, according to locomotive driver's hobby and the function of custom automatically regulated air conditioner, the practicality and the convenience of locomotive air conditioner have greatly been increased, comfortable good driving environment is provided for vast locomotive drivers, the running state of real time monitoring locomotive air conditioner, in time make the state adjustment, the operational safety of locomotive air conditioner has been ensured, the maintenance work has been simplified, the maintenance efficiency is improved, the intelligent fortune dimension of locomotive air conditioner has been realized.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic depictions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (9)
1. A locomotive air conditioning control system, comprising:
a variable frequency power supply; the variable frequency power supply is used for connecting a power supply;
a variable frequency compressor; the variable frequency compressor is connected with the variable frequency power supply;
a human-computer interaction module; the system comprises a memory and a processor, wherein the processor is respectively connected with a controller and the memory; the memory is used for storing user account information and air conditioner working parameters set by a user; the processor is used for reading the stored air conditioner working parameters from the memory and sending the air conditioner working parameters to the controller;
the controller; the controller is respectively connected with the variable frequency power supply, the variable frequency compressor and the human-computer interaction module; and the controller receives the air conditioner working parameters and controls the variable frequency power supply to drive the variable frequency compressor to operate according to the air conditioner working parameters.
2. The locomotive air conditioning control system of claim 1, wherein the human machine interaction module further comprises a human machine interaction interface;
the human-computer interaction interface is connected with the processor.
3. The locomotive air conditioning control system of claim 2, wherein the human machine interface is a touch screen display.
4. The locomotive air conditioning control system of claim 1, further comprising an EC fan;
the EC fan is connected with the controller.
5. The locomotive air conditioning control system of claim 1, further comprising a temperature sensor;
the temperature sensor is connected with the controller.
6. The locomotive air conditioning control system of claim 1, further comprising a humidity sensor;
the humidity sensor is connected with the controller.
7. The locomotive air conditioning control system of any of claims 1 to 6, wherein the inverter compressor is of the scroll, rotary, reciprocating, semi-hermetic, open, screw, centrifugal, or axial type.
8. The locomotive air conditioning control system of any of claims 1 to 6, wherein the variable frequency power supply drives the variable frequency compressor using SVPWM.
9. An air conditioner for a locomotive, comprising: the locomotive air conditioning control system of any of claims 1 to 8.
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| CN202123436991.2U CN217455978U (en) | 2021-12-31 | 2021-12-31 | Locomotive air conditioner control system and locomotive air conditioner |
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| CN202123436991.2U CN217455978U (en) | 2021-12-31 | 2021-12-31 | Locomotive air conditioner control system and locomotive air conditioner |
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