Control system of refrigerating unit and refrigerator car

Abstract

The utility model provides a control system of a refrigerating unit and a refrigerator car, and relates to the technical field of cold chain transportation. The control system of the refrigerating unit comprises a multimedia vehicle machine, a vehicle control unit, a data converter and the refrigerating unit, the multimedia vehicle machine is connected with the vehicle control unit, the vehicle control unit is connected with the data converter through a first link, and the data converter is connected with the refrigerating unit through a second link. The formats of signals transmitted by the first link and the second link are different, a first control signal is converted into a second control signal through the data converter, an independent signal transmission channel is configured for the refrigerating unit, and when the data converter does not recognize the first operation signal sent by the refrigerating unit, it is indicated that the first operation signal is abnormal. The data converter does not carry out conversion operation on the first operation signal, so that the first operation signal cannot be transmitted to the vehicle control unit, and the situation that the abnormal signal interferes with the vehicle control unit and influences the functions of the whole vehicle is avoided.

Description

Technical Field

[0001] The present application relates to the field of cold chain transportation technology, and in particular to a control system of a refrigeration unit and a refrigerated truck. Background Art

[0002] A refrigerated truck is a closed refrigerated transport vehicle that uses a refrigeration unit to regulate the temperature inside the cargo box. It is commonly used to transport frozen foods, dairy products, vegetables and fruits, vaccines, medicines and other frozen or preserved goods.

[0003] In the related art, a refrigeration unit in a refrigerated truck is connected to a vehicle controller, and the vehicle controller controls the refrigeration unit, so that the refrigeration unit adjusts the temperature in the cargo box according to the control of the vehicle controller.

[0004] However, the inventors have discovered that the above technology may affect the functions of the entire vehicle in some scenarios and pose a safety hazard. Utility Model Content

[0005] The present application provides a control system for a refrigeration unit and a refrigerated vehicle, which are used to solve the problem of potential safety hazards when the refrigeration unit is controlled by the vehicle controller through a direct connection between the vehicle controller and the refrigeration unit.

[0006] In a first aspect, an embodiment of the present application provides a control system for a refrigeration unit, including: a multimedia vehicle machine, a vehicle controller, a data converter, and a refrigeration unit;

[0007] The multimedia vehicle machine is connected to the vehicle controller, the vehicle controller is connected to the data converter via a first link, the data converter is connected to the refrigeration unit via a second link, and the signal formats transmitted by the first link and the second link are different;

[0008] A multimedia vehicle machine, including a display screen, provides a function of setting the temperature inside the cargo box of the refrigerated truck, and generates a temperature adjustment signal based on the temperature setting operation and sends it to the vehicle controller;

[0009] A vehicle controller, configured to generate a first control signal for the refrigeration unit and adapted to the first link according to the temperature adjustment signal, and send the first control signal to the data converter through the first link;

[0010] A data converter, configured to convert the first control signal into a second control signal adapted to the second link, and transmit the second control signal to the refrigeration unit through the second link; and, when the first operation signal adapted to the second link sent by the refrigeration unit is not identified, not converting the first operation signal;

[0011] The refrigeration unit is used to adjust the temperature in the cargo box based on the second control signal.

[0012] Optionally, the data converter is also used to, when the first operating signal is identified, convert the first operating signal into a second operating signal adapted to the first link, and transmit it to the vehicle controller through the first link, so that the vehicle controller obtains the operating status of the refrigeration unit.

[0013] Optionally, the control system of the refrigeration unit further includes: a vehicle-mounted monitoring terminal, a cloud platform and a binding terminal of the vehicle, and the vehicle-mounted monitoring terminal is connected to the multimedia vehicle machine;

[0014] The vehicle-mounted monitoring terminal is used to obtain the temperature inside the cargo box and the current ambient temperature of the vehicle, and upload the temperature inside the cargo box and the current ambient temperature to the cloud platform;

[0015] Binding terminal, used to set the temperature range of goods in the cargo box based on interaction with the user, and upload the temperature range of goods to the cloud platform;

[0016] The cloud platform is used to determine the control strategy for the refrigeration unit based on the cargo storage temperature range, the temperature inside the cargo box and the current ambient temperature, and send the control strategy to the multimedia vehicle computer through the on-board monitoring terminal.

[0017] Optionally, the binding terminal is further used to perform one or more of the following operations:

[0018] Remotely monitor the temperature inside the cargo box;

[0019] Obtain the current ambient temperature, and issue pop-up window prompts and / or alarm prompts based on the current ambient temperature and / or temperature inside the cargo box;

[0020] When it is detected that the vehicle has stopped moving, the temperature of the cargo box is set according to the current ambient temperature and / or the temperature inside the cargo box.

[0021] Optionally, the control system of the refrigeration unit further includes: a door magnetic switch, the door magnetic switch is installed on the cargo box door, and the door magnetic switch is connected to the multimedia vehicle machine;

[0022] The multimedia vehicle computer is also used to send out an alarm prompt message when it detects that the door magnetic switch is opened, and / or send a power enhancement instruction to the vehicle controller, so that the vehicle controller increases the working power of the refrigeration unit according to the power enhancement instruction.

[0023] Optionally, the control system of the refrigeration unit further includes: a temperature sensor probe, the temperature sensor probe is installed in the cargo box, and the temperature sensor probe is connected to the multimedia vehicle machine;

[0024] The multimedia vehicle computer is also used to monitor the temperature inside the cargo box through a temperature sensor probe, and to display the temperature inside the cargo box in real time through the display screen of the multimedia vehicle computer.

[0025] Optionally, there are at least two temperature sensor probes, which are respectively arranged at different positions in the cargo box.

[0026] Optionally, when the cargo box includes an area, the multimedia vehicle machine further includes a display screen, and the display screen of the multimedia vehicle machine displays the average temperature obtained by at least two temperature sensor probes in real time;

[0027] The cargo box includes multiple areas, and at least two temperature sensor probes are installed in different areas respectively. The multimedia car machine is also used to display the temperature of the different areas in real time on the display screen of the multimedia car machine.

[0028] Optionally, the multimedia car machine is also used for:

[0029] The display screen of the multimedia vehicle machine interacts with the user, sets the alarm temperature threshold, and issues an alarm when the temperature in the cargo box detected by the temperature sensor probe is greater than the alarm temperature threshold.

[0030] Optionally, the signal formats transmitted by the first link and the signal formats transmitted by the second link are different, including: the number of signal bits transmitted by the first link and the signal formats transmitted by the second link are different.

[0031] In a second aspect, an embodiment of the present application provides a refrigerated truck, including a closed cargo box and a control system of the refrigeration unit provided in the first aspect.

[0032] The control system of the refrigeration unit and the refrigerated vehicle provided in the embodiment of the present application, the control system of the refrigeration unit includes a multimedia vehicle machine, a vehicle controller, a data converter and a refrigeration unit. Among them, the multimedia vehicle machine is connected to the vehicle controller, the vehicle controller is connected to the data converter through a first link, the data converter is connected to the refrigeration unit through a second link, and the signal formats transmitted by the first link and the second link are different; specifically, the multimedia vehicle machine includes a display screen, provides the function of setting the temperature in the cargo box of the refrigerated vehicle, and generates a temperature adjustment signal based on the temperature setting operation and sends it to the vehicle controller; the vehicle controller is used to generate a first control signal for the refrigeration unit and adapted to the first link according to the temperature adjustment signal, and send the first control signal to the data converter through the first link; the data converter is used to convert the first control signal into a second control signal adapted to the second link, and transmit it to the refrigeration unit through the second link; and when the first operation signal adapted to the second link sent by the refrigeration unit is not identified, the first operation signal is not converted; the refrigeration unit is used to adjust the temperature in the cargo box based on the second control signal. The present application integrates the control system of the refrigeration unit into the multimedia vehicle computer through a multimedia vehicle computer, a vehicle controller, a data converter and a refrigeration unit to reduce costs. At the same time, a first control signal is converted into a second control signal through a data converter to configure a separate signal transmission channel for the refrigeration unit. When the data converter fails to recognize a first operating signal emitted by the refrigeration unit, it indicates that the first operating signal is abnormal. The data converter does not convert the first operating signal, so that the first operating signal cannot be transmitted to the vehicle controller, thereby avoiding interference of the abnormal signal on the vehicle controller and affecting the function of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0034] Figure 1 A system architecture diagram of a control system for a refrigeration unit provided in one embodiment of the present application;

[0035] Figure 2 A system architecture diagram of a control system for a refrigeration unit provided in yet another embodiment of the present application;

[0036] Figure 3 A system architecture diagram of a control system for a refrigeration unit provided in another embodiment of the present application;

[0037] Figure 4 A system architecture diagram of a control system of a refrigeration unit provided in another embodiment of the present application.

[0038] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In the related art, the refrigeration unit in the refrigerated truck is connected to the vehicle controller so that the refrigeration unit adjusts the temperature of the cargo box of the refrigerated truck according to the control of the refrigeration unit by the vehicle controller. However, this control method of the refrigeration unit will interfere with the vehicle controller when the operating signal emitted by the refrigeration unit does not match the signal defined by the vehicle controller, thereby affecting the function of the entire vehicle and posing a safety hazard.

[0041] Based on the technical problems existing in the related technology, the present application converts the first control signal into the second control signal through a data converter, so as to configure a separate channel for the refrigeration unit. When the data converter fails to recognize the first operating signal issued by the refrigeration unit, it indicates that the first operating signal is abnormal. The data converter does not convert the first operating signal, so that the first operating signal cannot be transmitted to the vehicle controller, thereby avoiding the abnormal signal from interfering with the vehicle controller and affecting the function of the vehicle.

[0042] Figure 1 This is a system architecture diagram of a control system for a refrigeration unit provided in one embodiment of the present application. Figure 1 As shown, the control system 10 of the refrigeration unit includes a multimedia vehicle machine 110 , a vehicle controller 120 , a data converter 130 and a refrigeration unit 140 .

[0043] The multimedia vehicle machine 110 (Man-Machine Interface, MMI for short) is connected to the vehicle control unit 120 (VCU for short), the vehicle control unit 120 is connected to the data converter 130 via a first link, the data converter 130 is connected to the refrigeration unit 140 via a second link, and the signal formats transmitted by the first link and the second link are different;

[0044] The multimedia vehicle machine 110 includes a display screen, provides a function of setting the temperature inside the cargo box of the refrigerated vehicle, and generates a temperature adjustment signal based on the temperature setting operation and sends it to the vehicle controller 120;

[0045] The vehicle controller 120 is used to generate a first control signal for the refrigeration unit 140 and adapted to the first link according to the temperature adjustment signal, and send the first control signal to the data converter 130 through the first link;

[0046] The data converter 130 is used to convert the first control signal into a second control signal adapted to the second link, and transmit the second control signal to the refrigeration unit 140 through the second link; and when a first operation signal adapted to the second link sent by the refrigeration unit 140 is identified, the first operation signal is converted into a second operation signal adapted to the first link, and the second operation signal is transmitted to the vehicle controller 120 through the first link, so that the vehicle controller 120 obtains the operation status of the refrigeration unit 140; when the first operation signal is not identified, the first operation signal is not converted;

[0047] The refrigeration unit 140 is used to adjust the temperature in the cargo box based on the second control signal.

[0048] It can be understood that the first operating signal may be issued by the refrigeration unit during operation.

[0049] Exemplarily, the multimedia vehicle machine 110 , the vehicle controller 120 , the data converter 130 and the refrigeration unit 140 are connected via a controller area network (CAN for short).

[0050] Exemplarily, the multimedia vehicle machine 110 and the vehicle controller may transmit information via a gateway (GW), wherein the gateway is connected to the multimedia vehicle machine 110 and the vehicle controller 120 via a CAN bus.

[0051] Exemplarily, the refrigeration unit 140 is connected to the chassis high-voltage component through a high-voltage line, and the chassis high-voltage component is used to provide high-voltage electricity to the refrigeration unit 140 .

[0052] Optionally, the signal formats transmitted by the first link and the second link are different, which may be that the number of signal bits transmitted by the first link and the second link are different.

[0053] Exemplarily, the number of signal bits of the message transmitted via the first link may be 6 bits, and the number of signal bits of the message transmitted via the second link may be 4 bits.

[0054] It should be noted that in the control system of the refrigeration unit provided in the present application, there is no limitation on the number of signal bits transmitted by the first link and the second link, which can be determined according to actual needs.

[0055] Optionally, when the data converter 130 does not recognize the first operating signal, the first operating signal is not converted, and the first operating signal can be uploaded to the cloud platform through the vehicle-mounted monitoring terminal for storage, so as to be subsequently used for monitoring and repairing the working status of the refrigeration unit.

[0056] It is understandable that when the refrigeration unit and the vehicle controller are directly connected, when the operating signal emitted by the refrigeration unit does not match the signal defined by the vehicle controller, the operating signal emitted by the refrigeration unit will interfere with the vehicle controller, thereby affecting the function of the vehicle. In the control system of the refrigeration unit provided in the embodiment of the present application, when the data converter fails to identify the first operating signal, it indicates that the first operating signal is an abnormal signal and the refrigeration unit may fail. When the data converter fails to identify the first operating signal, it does not perform a conversion operation on the first operating signal, thereby isolating the unidentified first operating signal on the communication link between the data converter and the refrigeration unit, and does not interfere with the vehicle controller.

[0057] For example, when a CAN bus off fault occurs in a refrigeration unit, if the refrigeration unit is directly connected to the vehicle controller, the vehicle will drop high voltage, making it impossible for the vehicle to drive normally. However, by connecting the vehicle controller and the refrigeration unit with a data converter, the data converter can prevent the operation signal from being sent to the vehicle controller by not converting the operation signal sent by the refrigeration unit that caused the CAN bus off fault, thereby affecting the function of the vehicle.

[0058] In an embodiment of the present application, the multimedia vehicle machine is connected to the vehicle controller, the vehicle controller is connected to the data converter through a first link, the data converter is connected to the refrigeration unit through a second link, and the signal formats transmitted by the first link and the second link are different; specifically, the multimedia vehicle machine includes a display screen, provides a function of setting the temperature in the cargo box of the refrigerated truck, and generates a temperature adjustment signal based on the temperature setting operation and sends it to the vehicle controller; the vehicle controller is used to generate a first control signal for the refrigeration unit and adapted to the first link according to the temperature adjustment signal, and send the first control signal to the data converter through the first link; the data converter is used to convert the first control signal into a second control signal adapted to the second link, and transmit it to the refrigeration unit through the second link; and when the first operation signal adapted to the second link sent by the refrigeration unit is identified, the first operation signal is converted into a second operation signal adapted to the first link, and transmitted to the vehicle controller through the first link, so that the vehicle controller obtains the operation status of the refrigeration unit; when the first operation signal is not identified, the first operation signal is not converted; the refrigeration unit is used to adjust the temperature in the cargo box based on the second control signal. In an embodiment of the present application, a first control signal is converted into a second control signal through a data converter, so as to configure a separate signal transmission channel for the refrigeration unit. When the data converter fails to recognize a first operating signal emitted by the refrigeration unit, it indicates that the first operating signal is abnormal. The data converter does not perform a conversion operation on the first operating signal, so that the first operating signal cannot be transmitted to the vehicle controller, thereby avoiding interference of the abnormal signal on the vehicle controller and affecting the function of the vehicle.

[0059] It is understandable that, compared with the related art, the display and control device for monitoring, displaying and controlling the temperature in the cargo box of the refrigerated truck is installed in the cab. On the one hand, it brings inconvenience to the driver's operation and affects driving safety. At the same time, it is also necessary to consider maintenance, space, aesthetics, comfort, labor, cost and other factors, resulting in high costs. On the other hand, the control and display system is not compatible with the original vehicle system, and the accuracy of control and display may be deviated, which may cause some goods in the cargo box to be damaged when overcooled or overheated. The control system of the refrigeration unit provided in the embodiment of the present application is integrated into the multimedia car machine of the vehicle, and then connected to the vehicle controller through the multimedia car machine. The vehicle controller is connected to the data converter through the first link, and the data converter is connected to the refrigeration unit through the second link to realize the control of the refrigeration unit, which has no effect on the driver's operation and is low in cost.

[0060] Figure 2 This is a system architecture diagram of a control system for a refrigeration unit provided in another embodiment of the present application. Figure 2As shown, the control system 20 of the refrigeration unit includes a multimedia vehicle machine 110, a vehicle controller 120, a data converter 130, a refrigeration unit 140, a vehicle monitoring terminal 150, a cloud platform 160 and a vehicle binding terminal 170.

[0061] The connection method among the multimedia vehicle machine 110 , the vehicle controller 120 , the data converter 130 and the refrigeration unit 14 and their respective functions are similar to those described above and will not be described in detail here.

[0062] The vehicle monitoring terminal 150 is connected to the multimedia vehicle machine 110;

[0063] The vehicle monitoring terminal 150 is used to obtain the temperature inside the cargo box and the current ambient temperature of the vehicle, and upload the temperature inside the cargo box and the current ambient temperature to the cloud platform 160;

[0064] A binding terminal 170 is used to set a temperature range for storing goods in a cargo box based on interaction with a user, and upload the temperature range for storing goods to a cloud platform;

[0065] The cloud platform 160 is used to determine the control strategy for the refrigeration unit according to the cargo storage temperature range, the temperature inside the cargo box and the current ambient temperature, and send the control strategy to the multimedia vehicle machine 110 through the vehicle monitoring terminal.

[0066] Exemplarily, the vehicle-mounted monitoring terminal 150 and the multimedia vehicle machine 110 may be connected via a CAN bus.

[0067] Exemplarily, the vehicle-mounted monitoring terminal 150 uploads the temperature inside the cargo box and the current ambient temperature to the cloud platform 160 via the remote cloud access layer.

[0068] Exemplarily, the binding terminal 170 is loaded with an application corresponding to the refrigerated truck, and based on the application, the user can set the temperature range for storing goods in the refrigerated truck cargo box and the optimal storage temperature of the goods.

[0069] For example, for some areas with large temperature differences between day and night, or in special situations such as drivers working in shifts overnight, the cloud platform 160 can determine the control strategy for the refrigeration unit based on the current temperature of the vehicle and the temperature range of the goods stored in the cargo box of the refrigerated truck, such as increasing or decreasing the working power of the refrigeration unit, and send the control strategy to the multimedia vehicle machine through the on-board monitoring terminal, and further send the control strategy to the vehicle controller through the multimedia vehicle frame. The vehicle controller generates a control signal according to the control strategy, and sends the control signal to the data converter through the first link. After the data converter converts the control signal, it obtains a control signal adapted to the second link, so that the refrigeration unit adjusts the temperature in the cargo box based on the control signal.

[0070] Compared with the related art, for goods transported over long distances, the working power of the refrigeration unit cannot be adaptively controlled as the regional temperature changes, resulting in unnecessary energy waste and a shortened life of the refrigeration unit. The embodiment of the present application determines the control strategy for the refrigeration unit through a cloud platform according to the cargo storage temperature range, the temperature inside the cargo box and the current ambient temperature, thereby achieving adaptive adjustment of the working power of the refrigeration unit and the temperature inside the cargo box of the refrigerated truck.

[0071] In the embodiment of the present application, the control system of the refrigeration unit includes a multimedia vehicle machine, a vehicle controller, a data converter, a refrigeration unit, a vehicle-mounted monitoring terminal, a cloud platform, and a binding terminal of the vehicle. Among them, the vehicle-mounted monitoring terminal is connected to the multimedia vehicle machine, the vehicle-mounted monitoring terminal is used to obtain the temperature in the cargo box and the current ambient temperature of the vehicle, and upload the temperature in the cargo box and the current ambient temperature to the cloud platform, the binding terminal is used to set the cargo storage temperature range in the cargo box based on interaction with the user, and upload the cargo storage temperature range to the cloud platform, the cloud platform is used to determine the control strategy for the refrigeration unit according to the cargo storage temperature range, the temperature in the cargo box and the current ambient temperature, and send the control strategy to the multimedia vehicle machine through the vehicle-mounted monitoring terminal. In the embodiment of the present application, the cloud platform determines the control strategy for the refrigeration unit according to the cargo storage temperature range, the temperature in the cargo box and the current ambient temperature, so as to realize the adaptive adjustment of the temperature in the cargo box of the refrigerated truck. At the same time, when the current ambient temperature of the vehicle is low, the temperature in the cargo box of the refrigerated truck is lowered by adaptively controlling the refrigeration unit, which can reduce the loss of vehicle power and save energy.

[0072] Optionally, the binding terminal is further used to perform one or more of the following operations:

[0073] Remotely monitor the temperature inside the cargo box; obtain the current ambient temperature, and issue pop-up prompts and / or alarm prompts based on the current ambient temperature and / or the temperature inside the cargo box; when it is detected that the vehicle has stopped moving, set the cargo box temperature based on the current ambient temperature and / or the temperature inside the cargo box.

[0074] Exemplarily, the binding terminal can remotely monitor the temperature inside the cargo box by acquiring the temperature inside the cargo box displayed on the display screen of the multimedia vehicle computer from the cloud platform.

[0075] Compared with the related art, when the user forgets to adjust the temperature in the cargo box or turn off the refrigeration unit, the user needs to return to the refrigerated truck to operate. For the user who is about to load the goods, the temperature in the cargo box cannot be adjusted to a suitable temperature in advance, and the refrigeration unit cannot be remotely controlled. The control system of the refrigeration unit provided in the embodiment of the present application can realize remote control of the refrigeration unit by binding the remote monitoring function of the terminal and the setting function of the temperature in the cargo box.

[0076] For example, when the bound terminal monitors a sudden rise or drop in temperature in the cargo box, it can notify the user of the abnormal temperature in the cargo box through pop-up prompts and / or alarm prompts, and allow the user to check factors such as vehicle equipment and power level to reduce losses caused by fire in the cargo box or failure of the refrigeration function.

[0077] For example, when the current ambient temperature changes over a large range, a pop-up window prompt and / or an alarm prompt may be used to notify the user to select appropriate temperature control parameters, which is more conducive to energy saving.

[0078] Optionally, the temperature holding time in the cargo box can be set at the binding terminal to achieve timed control of the refrigeration unit, which is beneficial to energy conservation and emission reduction.

[0079] Compared with the related art, when the refrigeration unit fails and loses its refrigeration function, the user cannot know it immediately, and there is no alarm function, which may cause damage to the goods. The embodiment of the present application can check the refrigeration unit in time and handle the goods to avoid damage to the goods by binding the alarm function of the terminal when the refrigeration unit fails and loses its refrigeration function.

[0080] Figure 3 This is a system architecture diagram of a control system for a refrigeration unit provided in another embodiment of the present application. Figure 3 As shown, the control system 30 of the refrigeration unit includes a multimedia vehicle machine 110 , a vehicle controller 120 , a data converter 130 , a refrigeration unit 140 , a door magnetic switch 180 and a temperature sensor probe 190 .

[0081] Optionally, a door magnetic switch 180 is installed on the cargo box door, and the door magnetic switch 180 is connected to the multimedia vehicle machine.

[0082] The multimedia vehicle machine 110 is also used to send an alarm prompt message when it detects that the door magnetic switch is opened, and / or send a power enhancement instruction to the vehicle controller, so that the vehicle controller increases the working power of the refrigeration unit according to the power enhancement instruction.

[0083] Exemplarily, the door magnetic switch 180 and the multimedia vehicle machine 110 may be connected via a hard wire.

[0084] Optionally, the temperature sensor probe 190 is installed in the cargo box, and the temperature sensor probe 190 is connected to the multimedia vehicle machine 110 .

[0085] The multimedia vehicle machine 110 is also used to monitor the temperature inside the cargo box through the temperature sensor probe 190, and to display the temperature inside the cargo box in real time through the display screen of the multimedia vehicle machine.

[0086] Exemplarily, the temperature sensor probe 190 and the multimedia vehicle machine 110 may be connected via a hard wire.

[0087] Optionally, there are at least two temperature sensor probes 190 , which are respectively disposed at different positions in the cargo box.

[0088] Exemplarily, the number of temperature sensor probes can be determined according to the number of interfaces in the cargo box for connecting the temperature sensor probes. Figure 3 The number of temperature sensor probes shown in FIG. 3 is 3.

[0089] The control system of the refrigeration unit provided in the embodiment of the present application does not limit the number of temperature sensor probes.

[0090] It is understandable that the cargo box of a refrigerated truck may include only one refrigerated area, or may include different refrigerated areas, and different refrigerated areas may require different refrigerated temperatures when transporting different goods.

[0091] Optionally, when the cargo box includes one area, the multimedia car computer also includes a display screen, and the temperature average obtained by at least two temperature sensor probes is displayed in real time on the display screen of the multimedia car computer; when the cargo box includes multiple areas, at least two temperature sensor probes are respectively installed in different areas, and the multimedia car computer is also used to display the temperatures of different areas in real time on the display screen of the multimedia car computer.

[0092] Optionally, the temperature sensor probe 190 may also be connected to the vehicle controller 120 via a hard line.

[0093] The vehicle controller 120 is also used to obtain the temperature inside the cargo box through the temperature sensor probe 190, and send the temperature inside the cargo box to the multimedia vehicle machine 110, so that the multimedia vehicle machine 110 can display the temperature inside the cargo box in real time on the display screen of the multimedia vehicle machine.

[0094] In an embodiment of the present application, the control system of the refrigeration unit includes a multimedia vehicle computer, a vehicle controller, a data converter, a refrigeration unit, a door magnetic switch and a temperature sensor probe. While realizing the control of the refrigeration unit, the status of the refrigerated compartment door is monitored through the door magnetic switch, and the temperature inside the cargo box is monitored through the temperature sensor probe. By installing multiple temperature sensor probes in the same cargo box, the accuracy of the temperature inside the cargo box displayed in real time on the multimedia vehicle computer display screen is ensured.

[0095] Optionally, the multimedia car computer is also used to: interact with the user based on the display screen of the multimedia car computer, set an alarm temperature threshold, and issue an alarm prompt when the temperature in the cargo box is detected by the temperature sensor probe to be greater than the alarm temperature threshold, thereby realizing the alarm function.

[0096] Figure 4 This is a system architecture diagram of a control system for a refrigeration unit provided in another embodiment of the present application. Figure 4As shown, the control system 40 of the refrigeration unit includes a multimedia vehicle machine 110, a vehicle controller 120, a data converter 130, a refrigeration unit 140, a vehicle monitoring terminal 150, a cloud platform 160, a binding terminal 170, a door magnetic switch 180, a temperature sensor probe 190, a gateway 200 and a chassis high-voltage component 210.

[0097] Among them, the connection relationship between the various components and the functions of the various components are similar to those described above and will not be repeated here.

[0098] In summary, the beneficial effects of the embodiments of the present application are summarized below.

[0099] 1. There is no need to install a refrigeration unit control system for the refrigerated truck in the cab. The vehicle's built-in multimedia car machine integrates the control system of the refrigerated truck refrigeration unit to reduce costs. At the same time, users can remotely control the refrigeration unit on the binding terminal, which is more convenient. The timing function of the binding terminal can more effectively plan the control of the refrigeration unit to achieve energy saving and emission reduction. The alarm function of the binding terminal and / or the multimedia car machine can inform the user immediately after the refrigeration function fails to avoid user losses.

[0100] 2. The control system of the refrigeration unit integrated in the multimedia car machine has better stability, and is compatible with the vehicle-mounted monitoring terminal, multimedia car machine, gateway, vehicle controller, data converter, software and hardware of the refrigeration unit of the whole vehicle, and can be adapted according to the protocol and software version of the actual vehicle controller, thereby solving the problem of incompatibility and occasional failure of the equipment installed in the control system of the refrigeration unit installed in the cab in the prior art; at the same time, for different vehicles, the control system of the refrigeration unit provided in the embodiment of the present application can provide refrigeration control and display functions for different vehicles by adapting to the vehicle code, thereby reducing costs and risks on the basis of improving efficiency.

[0101] 3. The background real-time monitoring function is realized through the binding terminal. The temperature inside the cargo box and the current ambient temperature of the vehicle are fed back to the cloud platform in real time through the on-board monitoring terminal. After cloud data processing, it is sent to the binding terminal, and on the display interface of the binding terminal, pop-up prompts or alarm prompts and other intelligent suggestions are issued according to the temperature inside the cargo box and the current ambient temperature of the vehicle. For example, when the temperature inside the cargo box rises and falls suddenly, the user will be notified to check the vehicle equipment, power and other factors when the temperature is abnormal, so as to reduce the losses caused by cargo fire or refrigeration function failure. When the current ambient temperature changes over a large range, the user will be notified to select appropriate temperature control parameters, which is more conducive to energy saving.

[0102] 4. Realize the function of adaptive temperature adjustment in the cargo box. For some areas with large temperature difference between day and night, or special conditions such as drivers working in shifts overnight, the cloud platform determines the control strategy for the refrigeration unit based on the cargo storage temperature range, the temperature in the cargo box and the current ambient temperature, and sends the control strategy to the multimedia vehicle computer through the vehicle monitoring terminal. The vehicle computer sends the control strategy to the vehicle controller. The vehicle controller obtains the control signal after background logic processing, and converts and processes the control signal through the data converter and sends it to the refrigeration unit, so that the refrigeration unit adjusts the temperature in the cargo box according to the control signal. At the same time, through the door magnetic switch, when the refrigerated compartment door is detected to be open, the refrigeration machine power is increased to reduce damage to the goods during transportation, and the monitoring function of vehicle refrigeration is realized.

[0103] The embodiment of the present application also provides a refrigerated truck, comprising a closed cargo box and a control system of a refrigeration unit provided by any of the above embodiments. The refrigerated truck has the functional structure and beneficial effects of the refrigeration unit.

[0104] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application, are not limited to the precise structures described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A control system for a refrigeration unit, characterized in that: include: Multimedia car machines, vehicle controllers, data converters and refrigeration units; The multimedia vehicle machine is connected to the vehicle controller, the vehicle controller is connected to the data converter via a first link, the data converter is connected to the refrigeration unit via a second link, and the signal formats transmitted by the first link and the second link are different; The multimedia vehicle machine is used to provide a function of setting the temperature in the cargo box of the refrigerated vehicle, and to generate a temperature adjustment signal based on the temperature setting operation and send it to the vehicle controller; The vehicle controller is configured to generate a first control signal for the refrigeration unit and adapted to the first link according to the temperature adjustment signal, and send the first control signal to the data converter through the first link; The data converter is used to convert the first control signal into a second control signal adapted to the second link, and transmit the second control signal to the refrigeration unit through the second link; and when the first operation signal adapted to the second link sent by the refrigeration unit is not identified, not converting the first operation signal; The refrigeration unit is used to adjust the temperature in the cargo box based on the second control signal.

2. The control system of the refrigeration unit according to claim 1, characterized in that: The data converter is also used to, when identifying the first operating signal, convert the first operating signal into a second operating signal adapted to the first link, and transmit the second operating signal to the vehicle controller through the first link, so that the vehicle controller obtains the operating status of the refrigeration unit.

3. The control system of the refrigeration unit according to claim 1, characterized in that: Also includes: A binding terminal for an on-board monitoring terminal, a cloud platform and a vehicle, wherein the on-board monitoring terminal is connected to the multimedia vehicle machine; The vehicle-mounted monitoring terminal is used to obtain the temperature inside the cargo box and the current ambient temperature of the vehicle, and upload the temperature inside the cargo box and the current ambient temperature to the cloud platform; The binding terminal is used to set a temperature range for storing goods in a cargo box based on interaction with a user, and upload the temperature range for storing goods to the cloud platform; The cloud platform is used to determine the control strategy for the refrigeration unit according to the cargo storage temperature range, the temperature inside the cargo box and the current ambient temperature, and send the control strategy to the multimedia vehicle machine through the vehicle-mounted monitoring terminal.

4. The control system of the refrigeration unit according to claim 3, characterized in that: The binding terminal is also used to perform one or more of the following operations: Remotely monitoring the temperature inside the cargo box; Acquire the current ambient temperature, and issue a pop-up window prompt and / or an alarm prompt according to the current ambient temperature and / or the temperature inside the cargo box; When it is detected that the vehicle stops running, the temperature of the cargo box is set according to the current ambient temperature and / or the temperature inside the cargo box.

5. The control system of the refrigeration unit according to any one of claims 1 to 4, characterized in that: Also includes: A door magnetic switch, which is installed on the cargo box door and is connected to the multimedia vehicle unit; The multimedia vehicle machine is also used to issue an alarm prompt message when it detects that the door magnetic switch is opened, and / or send a power enhancement instruction to the vehicle controller, so that the vehicle controller increases the working power of the refrigeration unit according to the power enhancement instruction.

6. The control system of a refrigeration unit according to any one of claims 1 to 4, characterized in that: Also includes: A temperature sensor probe, the temperature sensor probe is installed in the cargo box, and the temperature sensor probe is connected to the multimedia vehicle machine; The multimedia vehicle machine is also used to monitor the temperature inside the cargo box through the temperature sensor probe, and display the temperature inside the cargo box in real time through the display screen of the multimedia vehicle machine.

7. The control system of the refrigeration unit according to claim 6, characterized in that: The number of the temperature sensor probes is at least two, which are respectively arranged at different positions in the cargo box.

8. The control system of the refrigeration unit according to claim 7, characterized in that: When the cargo box includes an area, the multimedia vehicle machine further includes a display screen, and the display screen of the multimedia vehicle machine displays the average temperature values ​​obtained by at least two temperature sensor probes in real time; The cargo box includes multiple areas, and the at least two temperature sensor probes are respectively installed in different areas. The multimedia vehicle machine is also used to display the temperature of different areas in real time on the display screen of the multimedia vehicle machine.

9. The control system of the refrigeration unit according to claim 6, characterized in that: The multimedia vehicle machine is also used for: Based on the interaction between the display screen of the multimedia vehicle machine and the user, an alarm temperature threshold is set, and an alarm prompt is given when the temperature in the cargo box is detected by the temperature sensor probe to be greater than the alarm temperature threshold.

10. A refrigerated vehicle, characterized in that: include: A closed cargo box and a control system for a refrigeration unit as claimed in any one of claims 1 to 9.

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