Object detection device of vehicle-mounted refrigerator

Abstract

The utility model relates to the technical field of vehicle-mounted refrigerators, in particular to an object detection device of a vehicle-mounted refrigerator. Comprising a control panel and a plurality of infrared detection groups, and the control panel is electrically connected with the infrared detection groups; each infrared detection group comprises a pair of infrared emitting head and infrared receiving head which are collinear and oppositely arranged, and a plurality of through holes are collinear formed in parts between the infrared emitting head and the infrared receiving head. According to the technical scheme, object detection in the drawer type vehicle-mounted refrigerator can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted refrigerators, and particularly to an object detection device for a vehicle-mounted refrigerator. Background Art

[0002] A vehicle-mounted refrigerator is a portable refrigeration device designed specifically for the vehicle environment. It can be easily installed in the vehicle and operates by connecting to the vehicle's 12V DC power supply or an adapted power converter to connect to a 220V AC power supply. The main purpose of a vehicle-mounted refrigerator is to provide refrigeration or heat preservation services for passengers during travel, maintaining the freshness of food and beverages, which is particularly useful during long-distance trips, camping, outdoor activities, or business vehicles.

[0003] Considering the importance of energy conservation and environmental protection, the vehicle-mounted refrigerator only starts to operate when there are objects stored in the refrigerator. This not only helps to reduce unnecessary energy consumption but also extends the service life of the refrigerator.

[0004] Currently, the door-opening vehicle-mounted refrigerators on the market generally use infrared devices to detect whether there are objects in the refrigerator. Since the positions where objects are placed inside the box body are fixed, infrared devices are fixedly installed inside the box body to detect whether there are objects at the fixed positions.

[0005] Refer to Figure 1 , there is also a drawer-type vehicle-mounted refrigerator on the market. Its box body generally includes a housing, an evaporator, and a movable drawer. The evaporator is arranged inside the housing. The evaporator generally adopts a plate-tube evaporator, which includes a heat exchange plate and heat exchange tubes. The heat exchange tubes can be fixed on the heat exchange plate through heat-conducting glue. The movable drawer is arranged inside the evaporator so that the movable drawer can maintain a refrigerated environment.

[0006] Due to the particularity of its opening method, it is necessary to move the movable drawer to place and take out objects, and the box body and the area where items are placed are not fixed. Therefore, the technical solutions of door-opening vehicle-mounted refrigerators cannot be directly applied to drawer-type vehicle-mounted refrigerators, and a new technical solution is urgently needed to achieve object detection. Content of the Utility Model

[0007] The purpose of the utility model is to provide an object detection device for a vehicle-mounted refrigerator, and this technical solution can achieve object detection inside a drawer-type vehicle-mounted refrigerator.

[0008] To achieve the above purpose, the basic solution provided by the utility model is: an object detection device for a vehicle-mounted refrigerator, including a control board and a plurality of infrared detection groups. The control board is electrically connected to the infrared detection groups; each infrared detection group includes a pair of infrared transmitting heads and infrared receiving heads that are collinear and oppositely arranged, and a plurality of through holes are arranged collinearly on the components between the infrared transmitting heads and the infrared receiving heads.

[0009] Principle and beneficial effects of the basic solution: In this solution, the controller drives the infrared emitter to emit infrared signals, and the infrared receiver receives the infrared signals. Since the movable drawer will be pushed and pulled when objects need to be placed in the refrigerator, the infrared detection group should be set outside the movable drawer. At the same time, through holes are set at the positions on the movable drawer that are collinear with the infrared detection group to avoid blocking the infrared emitter and the infrared receiver, which may affect the detection of objects.

[0010] When the movable drawer is pushed back into the box and in place, the infrared emitter, the through hole, and the infrared receiver are all on the same straight line. When there is an object in the movable drawer, the infrared signal emitted by the infrared emitter is blocked and the receiver cannot capture it, and the control board determines that there is an object; when there is no object in the movable drawer, the infrared signal emitted by the infrared emitter can be captured by the receiver, and the control board determines that there is no object.

[0011] As an implementable preferred solution, the infrared detection groups are evenly spaced.

[0012] As an implementable preferred solution, the interval between the infrared detection groups is 40mm - 55mm.

[0013] As an implementable preferred solution, the infrared emitter and the infrared receiver are respectively fixedly connected to two outer side walls of the evaporator.

[0014] As an implementable preferred solution, the infrared emitting end and the infrared receiving end are respectively fixedly connected to two inner side walls of the housing.

[0015] As an implementable preferred solution, it further includes an indicator light, which is arranged on the housing and electrically connected to the control board. Description of the Drawings

[0016] Figure 1 is a schematic diagram of a drawer-type vehicle refrigerator;

[0017] Figure 2 is a schematic diagram of the principle of an object detection device for a vehicle refrigerator;

[0018] Figure 3 is a schematic diagram of the installation of the infrared emitting end and the infrared receiving end on the outer side wall of the evaporator respectively;

[0019] Figure 4 is a schematic diagram of the installation of the infrared emitting end and the infrared receiving end on the inner side wall of the housing respectively;

[0020] Figure 5 is a schematic diagram of the system architecture of an object detection device for a vehicle refrigerator;

[0021] Figure 6It is a schematic structural diagram of an object detection device for a vehicle-mounted refrigerator. Detailed implementation manners

[0022] The technical solution of the present application will be further described in detail through the following specific implementation manners:

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection (including various mechanical connection forms, such as couplings or gear pairs, etc.), or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] Reference numerals: infrared emitter 1, infrared receiver 2, box body 3, movable drawer 4, through hole 5, infrared emission end 6, infrared reception end 7, evaporator 8, outer shell 9.

[0025] Refer to Figure 2 , an object detection device for a vehicle-mounted refrigerator, includes a control board, an infrared emission end 6 and an infrared reception end 7. In this embodiment, the model of the control board is CM2E1012-03, and the control board uses a chip with the model of G32A1445HAT0VLH. The control board is electrically connected to the infrared emission end 6 and the infrared reception end 7. The control board is used to drive the infrared emission end 6 to emit infrared signals and receive infrared signals through the infrared reception end 7. The infrared emission end 6 includes a plurality of infrared emitters, and the infrared reception end 7 includes a plurality of infrared receivers 2. In this embodiment, the model of the infrared emitter is OS-554F0445, and the model of the infrared receiver is OS-PT554C-28A.

[0026] The infrared emission end 6 and the infrared reception end 7 are arranged opposite to each other on the same horizontal straight line, and each pair of collinear infrared emitters and infrared receivers 2 together form an infrared detection group. Specifically, in one embodiment, refer to Figure 3 , the infrared emission end 6 and the infrared reception end 7 are respectively fixedly connected to two outer side walls of the evaporator 8. In another embodiment, refer to Figure 4 , the infrared emission end 6 and the infrared reception end 7 are respectively fixedly connected to two inner side walls of the outer shell 9, so that the infrared emission end 6 and the infrared reception end 7 can be better wired.

[0027] Refer to Figure 5 and Figure 6, there will be at least some obstruction by the side wall of the movable drawer 4 between the infrared transmitter 6 and the infrared receiver 7. Therefore, a number of through holes 5 are provided in a straight line on the components between the infrared transmitter head and the infrared receiver head 2 of each infrared detection group. The through holes 5 are provided on the side wall of the movable drawer 4 to avoid obstruction between the infrared detection groups, so that the infrared light can penetrate the movable drawer 4. When there are more components obstructing between the infrared transmitter 6 and the infrared receiver 7, the number of through holes 5 needs to be increased according to the actual situation. For example, when the infrared transmitter 6 and the infrared receiver 7 are Figure 2 or Figure 3 respectively fixedly connected to the two outer side walls of the evaporator 8 or respectively fixed on the two inner side walls of the housing 9, through holes 5 also need to be provided on the side wall of the evaporator 8.

[0028] The infrared detection groups are evenly spaced from each other. In this embodiment, the spacing of the infrared detection groups is preferably set at equal distances such as 40 mm, 45 mm, 50 mm or 55 mm. By evenly and reasonably setting the spacing of the infrared detection groups, it is ensured that the object is covered by the infrared detection device to achieve the detection of the object. In addition, the setting of multiple infrared detection groups can also detect the specific placement position of the object, as well as the size and quantity of the placed object, so as to facilitate the vehicle-mounted refrigerator to adjust the operating power according to the actual placement situation of the object, increase the operating power to ensure the refrigeration effect when there are more objects, and appropriately reduce the operating power when there are fewer objects to achieve the energy-saving effect.

[0029] When the movable drawer 4 is pushed back into the box body 3 in place, the infrared transmitter head, the through hole 5 and the infrared receiver head 2 are all in the same straight line. At this time, the infrared detection device starts to work. When there is an object in the movable drawer 4, the infrared signal emitted by the infrared transmitter is blocked and the receiver cannot capture it, and the control board determines that there is an object; when there is no object in the movable drawer 4, the infrared signal emitted by the infrared transmitter can be captured by the receiver, and the control board determines that there is no object.

[0030] Embodiment 2

[0031] The difference technical feature of this embodiment from Embodiment 1 is that it further includes an indicator light. The indicator light is arranged on the housing 9 and is electrically connected to the control board. When the control board determines that there is an object in the movable drawer 4, it gives an indication by lighting the indicator light or the color of the indicator light, and the user can determine whether the vehicle-mounted refrigerator is operating or whether an object has been successfully detected through the indicator light.

[0032] The above content is only an embodiment of the present utility model. Specific structures and common knowledge such as characteristics well-known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the utility model belongs before the filing date or the priority date, can know all the prior art in this field, and have the ability to apply conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given by this application and in combination with their own abilities, improve and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. An object detection device for a vehicle-mounted refrigerator, characterized in that: It includes a control board and several infrared detection groups, and the control board is electrically connected to the infrared detection groups; each infrared detection group includes a pair of collinear and oppositely arranged infrared transmitting heads and infrared receiving heads, and several through holes are arranged collinearly on the components between the infrared transmitting heads and the infrared receiving heads, including those arranged on the side walls of the movable drawer; the infrared transmitting heads and the infrared receiving heads are respectively fixedly connected to two outer side walls of the evaporator or two inner side walls of the housing.

2. The object detection device of a vehicle-mounted refrigerator according to claim 1, wherein: The infrared detection groups are evenly spaced from each other.

3. The object detection device for a vehicle-mounted refrigerator according to claim 2, characterized in that: The spacing between the infrared detection groups is 40 mm - 55 mm.

4. The object detection device of a vehicle-mounted refrigerator according to claim 1, characterized in that: It further includes an indicator light, the indicator light is arranged on the housing, and the indicator light is electrically connected to the control board.

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