A light push door closing control method for a drawer refrigerator

Abstract

The application discloses a drawer refrigerator light push door closing control method, comprising the following steps: S1, when the drawer is pulled out from the cabinet by a distance D and stops for a duration T1, the photoelectric sensor works; S2, the drawer movement triggers the photoelectric sensor to generate a high-low level change signal, and the duration T2 is counted after receiving the high-low level change signal; S3, the number of continuous effective signals in the high-low level change signal within the duration T2 is detected, and the number n of effective signals is calculated through the grating signal counter; S4, when the grating signal counter counts n>N, the motor assembly is controlled to drive the drawer to close, the grating signal counter is cleared, the photoelectric sensor stops working, and the step S1 is returned; when the grating signal counter counts n≤N, the grating signal counter is cleared, and the step S2 is returned, the continuous effective signals in the high-low level change signal of the photoelectric sensor are detected to control the automatic closing of the drawer, the abnormal signals generated under the shaking condition of the drawer can be filtered, and the detection accuracy of the user's light push on the drawer is improved.

Description

[TECHNICAL FIELD]

[0001] The present application relates to the field of vehicle-mounted refrigerators, and in particular to a drawer refrigerator light-push door closing control method. [BACKGROUND]

[0002] With the development of refrigerator intelligence, automatic opening or closing of drawer refrigerators has become a development trend of user interaction experience, especially in vehicle-mounted drawer refrigerators, users are generally used to triggering automatic closing of the refrigerator drawer by lightly pushing the drawer. However, in the patent of a rope type vehicle-mounted refrigerator using a photoelectric sensor disclosed in application No. 202420961135.3, automatic closing of the vehicle-mounted refrigerator drawer is triggered when vibration occurs during vehicle driving, which has the problems of low accuracy of drawer push detection of the vehicle-mounted refrigerator and poor user experience. [SUMMARY]

[0003] The present application overcomes the shortcomings of the prior art and provides a drawer refrigerator light-push door closing control method for controlling automatic closing of a drawer by detecting continuous valid signals in a high-low level change signal of a photoelectric sensor.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A drawer refrigerator light-push door closing control method, characterized in that it comprises

[0006] S1, when the drawer is pulled out from the cabinet by a distance D and stopped for a duration T1, a control module controls a photoelectric sensor to work;

[0007] S2, the drawer movement triggers the photoelectric sensor to generate a high-low level change signal, and the control module times for a duration T2 after receiving the high-low level change signal;

[0008] S3, the control module detects the number of continuous valid signals in the high-low level change signal generated by the photoelectric sensor within the duration T2, and calculates the number of valid signals n through a grating signal counter; the judgment condition of the valid signal is t1 < continuous high-low level change signal duration t < t2, and t2 < T2;

[0009] S4, when the grating signal counter counts n > N, the control module controls a motor assembly to drive the drawer to close, the grating signal counter is cleared, the photoelectric sensor stops working, and the process returns to S1;

[0010] When the grating signal counter counts n ≤ N, the grating signal counter is cleared and the process returns to S2.

[0011] The drawer refrigerator light-push door closing control method described above is characterized in that T2 is in the range of 1.4s < T2 < 1.6s.

[0012] The drawer refrigerator light push door closing control method as described above is characterized in that the range of t1 is 35ms < t1 < 45ms,

[0013] The drawer refrigerator light push door closing control method as described above is characterized in that the range of t2 is 195ms < t2 < 205ms.

[0014] The drawer refrigerator light push door closing control method as described above is characterized in that N is 1.

[0015] The drawer refrigerator light push door closing control method as described above is characterized in that the time length T1 is 2S.

[0016] The drawer refrigerator light push door closing control method as described above is characterized in that a storage cavity is arranged in the cabinet, the drawer is movably inserted in the storage cavity, the photoelectric sensor is arranged on the inner side surface of the storage cavity, the light barrier is arranged on the outer side surface of the drawer, and the light barrier moves to the photoelectric sensor after the drawer is pulled out from the cabinet by a distance D.

[0017] The drawer refrigerator light push door closing control method as described above is characterized in that a storage cavity is arranged in the cabinet, the drawer is movably inserted in the storage cavity, the photoelectric sensor is arranged on the outer side surface of the drawer, the light barrier is arranged on the inner side surface of the storage cavity, and the photoelectric sensor moves to the light barrier after the drawer is pulled out from the cabinet by a distance D.

[0018] The drawer refrigerator light push door closing control method as described above is characterized in that the photoelectric sensor generates a high-level signal when the light barrier shields the photoelectric sensor, and generates a low-level signal when the light barrier does not shield the photoelectric sensor.

[0019] The drawer refrigerator light push door closing control method as described above is characterized in that the distance D is the maximum distance by which the drawer is pulled out from the cabinet.

[0020] The beneficial effects of the present application are:

[0021] The present application triggers the photoelectric sensor to generate a high-low level change signal when the drawer is pushed, detects the number of continuous effective signals in the high-low level change signal generated by the photoelectric sensor within a period of time, controls the drawer to automatically close when the number of continuous effective signals is not less than a preset value, and clears the number of continuous effective signals and waits for the next continuous effective signal detection when the number of continuous effective signals is less than the preset value, which can effectively filter the abnormal high-low level change signals generated by the drawer under the shaking condition, thereby greatly improving the detection accuracy of the user's light push of the drawer. [BRIEF DESCRIPTION OF DRAWINGS]

[0022] Figure 1 is the schematic diagram of the present application;

[0023] Figure 2 A cross-sectional view of a drawer in a closed state according to an embodiment of the present application;

[0024] Figure 3 A cross-sectional view of a drawer in a state of being pulled out to a maximum distance according to an embodiment of the present application. [DETAILED DESCRIPTION]

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings.

[0026] It should be noted that all directional indications, such as upper, lower, left, right, front, back, and the like, used in the embodiments of the present application are only used to explain the relative position relationship, movement condition, and the like between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly. In addition, the descriptions involving “preferred”, “suboptimal”, and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of the technical features indicated. Therefore, the features defined as “preferred”, “suboptimal” can be explicitly or implicitly included at least one of the features.

[0027] As shown in FIG. 1, a light push door closing control method of a drawer refrigerator includes Figure 1

[0028] S1, after the drawer is pulled out from the cabinet by a distance D and stopped for a time T1, the control module controls the photoelectric sensor to work;

[0029] In the present case, the distance D is the maximum distance by which the drawer is pulled out from the cabinet, and the time T1 is 2 seconds. That is, after the drawer is pulled out from the cabinet by the maximum distance to a maximum opening position and stopped for a time T2, the photoelectric sensor starts to work.

[0030] S2, the drawer movement triggers the photoelectric sensor to generate a high-low level change signal, and the control module times T2 after receiving the high-low level change signal; wherein T2 is in the range of 1.4s

[0031] In the present case, T2 is set to 1.5 seconds. After the drawer is opened to the maximum position, the grating will move to the photoelectric sensor; the grating and the photoelectric sensor will move relative to each other when the drawer moves, thereby triggering the photoelectric sensor to generate a high-low level change signal, and the control module times 1.5 seconds after receiving the high-low level change signal.

[0032] ​S3, the control module detects the number of continuous valid signals in the high-low level change signal generated by the photoelectric sensor within T2, and calculates the number of valid signals n through the grating signal counter; wherein the judgment condition of the valid signal is t1

[0033] In this case, t1 is set to 40 ms and t2 is set to 200 ms, so the judgment condition of the valid signal is 40 ms

[0034] For example, when the continuous high-low level change signal generated by the photoelectric sensor within 1.5 s lasts for more than 250 ms, according to the judgment condition of the valid signal, the first valid signal t1 is in the range of 0-200 ms, and the second continuous valid signal t2 is in the range of 200-250 ms, that is, two continuous valid signals are detected, and the grating signal counter calculates the number of valid signals n as 2.

[0035] S4, the control module judges whether the number n counted by the grating signal counter is greater than N; wherein N is 1;

[0036] When the number n counted by the grating signal counter is greater than 1, the control module controls the motor assembly to drive the drawer to close, the grating signal counter is cleared, the photoelectric sensor stops working, and returns to S1 to wait for the next time the drawer is pulled out from the cabinet to the maximum distance of the opening position.

[0037] When the number n counted by the grating signal counter is less than or equal to 1, the grating signal counter is cleared and returns to S2 to wait for the next time the drawer moves to trigger the photoelectric sensor to generate a high-low level change signal.

[0038] The present application can effectively filter the abnormal high-low level change signal generated by the photoelectric sensor triggered by the drawer in the shaking condition, thereby improving the detection accuracy of the user's light push on the drawer.

[0039] In this case, the vehicle-mounted refrigerator has a storage cavity in the cabinet, and the drawer is movably inserted in the storage cavity.

[0040] In this case, the photoelectric sensor and the grating can be implemented as follows: Figures 2-3As shown, the photoelectric sensor 3 is arranged on the inner side of the storage cavity 11, the light barrier 4 is arranged on the outer side of the drawer 2, and the light barrier 4 moves to the photoelectric sensor 3 after the drawer 2 is pulled out from the cabinet 1 by a distance D. That is, when the drawer is pulled out from the cabinet, the light barrier moves outward with the cabinet, and when the drawer is pulled out to the maximum opening position, the light barrier moves to the photoelectric sensor.

[0041] In the present application, the photoelectric sensor and the light barrier are arranged as follows: the photoelectric sensor is arranged on the outer side of the drawer, the light barrier is arranged on the inner side of the storage cavity, and the photoelectric sensor moves to the light barrier after the drawer is pulled out from the cabinet by a distance D. That is, when the drawer is pulled out from the cabinet, the photoelectric sensor moves outward with the cabinet, and when the drawer is pulled out to the maximum opening position, the photoelectric sensor moves to the light barrier.

[0042] In the present application, the photoelectric sensor generates a high-level signal when the light barrier shields the photoelectric sensor, and generates a low-level signal when the light barrier does not shield the photoelectric sensor. Therefore, after the drawer is pulled out to the maximum opening position, the photoelectric sensor may be in a state of being shielded by the light barrier to generate a high-level signal, or in a state of not being shielded by the light barrier to generate a low-level signal. When the drawer is pushed, the light barrier and the photoelectric sensor move relative to each other, so that the photoelectric sensor generates an alternating change signal of high-level and low-level, and sends the signal to the control module to detect the effective signal.

[0043] The above is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct or indirect application in other related technical fields within the concept of the present application, and the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A method for controlling the gentle push to close the drawer refrigerator door, characterized in that: Including S1. After the drawer is pulled out of the cabinet by a distance D and stopped for a period of T1, the control module controls the photoelectric sensor to work. S2. The drawer movement triggers the photoelectric sensor to generate a high-low level change signal. After receiving the high-low level change signal, the control module counts the duration T2. S3. The control module detects the number of consecutive valid signals in the high and low level change signals generated by the photoelectric sensor within the duration of T2, and calculates the number of valid signals n through the grating signal counter. The condition for determining a valid signal is that t1 < duration of the consecutive high and low level change signal t < t2, and t2 < T2. The range of t1 is 35ms < t1 < 45ms, and the range of t2 is 195ms < t2 < 205ms. S4. When the grating signal counter counts n>N, the control module controls the motor assembly to drive the drawer to close, the grating signal counter is cleared to zero, the photoelectric sensor stops working, and returns to S1. When the grating signal counter counts n≤N, the grating signal counter is cleared to zero and returns to S2; where N is 1.

2. The drawer refrigerator door closing control method according to claim 1, characterized in that: T2 is in the range of 1.4s < T2 < 1.6s.

3. The drawer refrigerator door closing control method according to claim 1, characterized in that: Duration T1 is 2 seconds.

4. The drawer refrigerator door closing control method according to claim 1, characterized in that: The cabinet has a storage cavity, and a drawer is inserted into the storage cavity. A photoelectric sensor is set on the inner side of the storage cavity, and a grating is set on the outer side of the drawer. After the drawer is pulled out of the cabinet by a distance D, the grating moves to a position opposite to the photoelectric sensor.

5. The drawer refrigerator door closing control method according to claim 1, characterized in that: The cabinet has a storage cavity, and the drawer is movably inserted into the storage cavity. The photoelectric sensor is set on the outer side of the drawer, and the grating is set on the inner side of the storage cavity. After the drawer is pulled out of the cabinet by a distance D, the photoelectric sensor moves to a position opposite to the grating.

6. A method for controlling the gentle push-to-close of a drawer refrigerator according to claim 4 or 5, characterized in that: When the grating blocks the photoelectric sensor, the photoelectric sensor generates a high-level signal; when the grating does not block the photoelectric sensor, the photoelectric sensor generates a low-level signal.

7. A method for controlling the gentle push-to-close of a drawer refrigerator according to claim 1, 4, or 5, characterized in that: Distance D is the maximum distance the drawer can be pulled out of the box.

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