Bag laying fan control method and intelligent garbage can thereof

Abstract

The invention relates to the technical field of intelligent garbage cans, discloses a bag laying fan control method and system and an intelligent garbage can thereof, and solves the technical problem of how to prolong the endurance time of a product at present. The control method comprises the following control steps that a plurality of preset power supply periods for supplying power to a bag laying fan are defined; in the continuous preset power supply period, bag laying fans are controlled to work under the condition that the working power is gradually increased; in the whole preset power supply period, the laying state of the garbage bag is synchronously detected; whether laying of the garbage bag is completed is judged; if yes, the bag laying fan is controlled to be powered off in advance and stop working. According to the technical scheme, a large number of garbage bags can be laid under the low-power condition, a small number of garbage bags which are difficult to lay are laid under the high-power condition, and therefore the situation that all the garbage bags are laid under the high-power condition is avoided, and the technical purposes of saving electricity and prolonging the product endurance time are achieved.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 5, 2024, with application number 2024107182042 and application name “A bag-laying fan control method, system and intelligent trash can thereof”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of intelligent trash cans, and more particularly to a bag-laying fan control method and an intelligent trash can thereof. Background Art

[0003] A smart trash can is a trash can that can automatically pack and change bags. It has an independent control module inside. By integrating some software control programs into the control module, it can realize intelligent control of the lid opening and closing function, packing function and bag changing function of the smart trash can, thereby realizing the intelligence of the smart trash can.

[0004] The existing Chinese invention patent with the patent publication number CN108438612A discloses a garbage bag laying device, which uses a bag laying fan to suck air and lay the bags. The suction operation can form a negative pressure inside the garbage bin, and the garbage bags are laid downwards under the action of pressure. The bag laying fan starts working when power is supplied, and the greater the power supply voltage and the faster the fan speed, the better the suction performance and the higher the bag laying completion rate. However, when the power supply voltage of the bag laying fan is relatively low, it is easy to cause the garbage bag laying success rate to be too low, affecting the user experience. At the same time, during the laying process of the garbage bag, an infrared detection device is also configured to detect the progress of the garbage bag laying. When the garbage bag laying is completed, the infrared detection device detects that the garbage bag laying is completed, and the controller receives the information that the bag laying is completed and controls the bag laying fan to stop working.

[0005] Based on the bag-laying operation methods of the bag-laying blower in the above-mentioned prior art, the bag-laying blower can operate under different power supply voltages. To improve the success rate of garbage bag laying, it is generally necessary to supply the bag-laying blower with a relatively high power supply voltage. While using a higher power supply voltage for bag-laying greatly solves the laying of certain difficult-to-lay garbage bags, thus ensuring a near-100% bag-laying success rate, it also accelerates the consumption of battery power within the smart trash can, reducing the battery life of the smart trash can. Therefore, how to design a more intelligent bag-laying solution to achieve increased battery life while maintaining the same battery charge? Summary of the Invention

[0006] In response to the technical problem of how to extend the product life raised in the background technology, the present invention controls the bag-laying fans to operate under gradually increasing working power conditions, and simultaneously detects the laying status of the garbage bags. When it is detected that the garbage bags have been laid, the bag-laying fans are promptly controlled to stop. Through this technical solution, a large number of garbage bags can be laid under low power conditions, and a small number of garbage bags that are difficult to lay can be laid under high power conditions, thereby avoiding all garbage bags being laid under high power conditions, thereby achieving the technical purpose of saving electricity and extending the product life.

[0007] To achieve the above object, the present invention provides the following technical solution 1:

[0008] A bag-laying fan control method is applied to an intelligent trash can, wherein the intelligent trash can comprises a bag-laying fan (1), a controller (2), a garbage bag detection device (3) and a power supply (4), wherein the garbage bag detection device (3) is used to detect the laying state of the garbage bag, the garbage bag detection device (3) is communicatively connected to the controller (2), the controller (2) is control-connected to the bag-laying fan (1), the power supply (4) and the bag-laying fan (1) are electrically connected to supply power to the bag-laying fan (1), and the controller (2) is used to execute the following control steps:

[0009] Define multiple preset power supply cycles for powering the bagging fans;

[0010] During the continuous preset power supply cycles, the bag-laying fans are controlled to operate at gradually increasing operating power conditions;

[0011] During the entire preset power supply cycle, the laying status of the garbage bags is synchronously detected;

[0012] Determine whether the garbage bags have been laid;

[0013] If so, control the bag-making fan to cut off power in advance and stop working.

[0014] Regarding the above technical solution, let's first explain why there are different types of garbage bags, some of which are difficult to lay and some of which are easy to lay. The main reason is that garbage bags are continuous garbage bags, such as the garbage bags disclosed in patent announcement number CN206125974U. The garbage bags are packed into a box. Different production processes or individual differences between products will lead to different laying resistances of garbage bags. As for the power supply voltage of the bag laying fan, for example, when the garbage bag laying fan is given a voltage of 10V, it can ensure that 99.9% of the garbage bags can be laid; when it is given a voltage of 9V, it can only ensure that 99% of the garbage bags can be laid; when it is given a voltage of 8.5V, it can only ensure that 95% of the garbage bags can be laid; when it is given a voltage of 8V, it can only ensure that 90% of the garbage bags can be laid; when it is given a voltage of 7.5V, it can only ensure that 85% of the garbage bags can be laid. Therefore, in order to achieve a good laying completion rate and ensure the user experience of the product, the voltage of the bag laying blower needs to be set to 9V or above. If this is the actual situation, the bag laying blower of the existing smart trash can usually configure the supply voltage of the bag laying blower to 9V to achieve a higher laying success rate. However, in fact, a large number of garbage bags in the garbage bag box can be laid with a supply voltage below 9V (for example, when a voltage of 8V is provided, 90% of the garbage bags can be laid), but this is not enough to meet actual user needs.

[0015] The present invention controls the bag-laying fan to operate at gradually increasing operating power levels and simultaneously detects the bag laying status. When the bag laying is detected to be complete, the fan is promptly shut down. For example, the fan may operate for 2 seconds at a 75% duty cycle (the actual average voltage within the cycle is 7.5V) at a 10V voltage, 2 seconds at an 80% duty cycle (the actual average voltage within the cycle is 8.0V), 2 seconds at an 85% duty cycle (the actual average voltage within the cycle is 8.5V), 2 seconds at a 90% duty cycle (the actual average voltage within the cycle is 9.0V), and 2 seconds at a 100% duty cycle (the actual average voltage within the cycle is 10.0V). If the completion of the bag laying is detected within any small time period, the bag laying process can be prematurely terminated.

[0016] The existing solution is to operate the bag-laying blower with a 9V or 10V supply voltage for a short 2-second period. Once the bag detection device detects that the bag has been laid, the blower stops operating. However, the 10V voltage per 2-second period exceeds the actual voltage required for laying a large number of garbage bags, resulting in excess power consumption and a shorter battery life.

[0017] The present invention further: after determining whether the garbage bag is laid, if not, determine whether it is in a preset power supply cycle; if yes, return to detect the laying status of the garbage bag; if not, control the bag laying fan to cut off power, stop working, and alarm.

[0018] The present invention further states that the aforementioned gradually increasing operating power condition means that the supply voltage remains unchanged, and the duty cycle ratio of the supply voltage is controlled to gradually increase within the continuous preset power supply cycle.

[0019] The present invention further defines a plurality of preset power supply cycles for powering the bag-making fan, which may be five preset power supply cycles, wherein the power supply time of each preset power supply cycle is 2 seconds, and the power supply voltage of the bag-making fan is set to 10V; and the duty ratios of the bag-making fan in the five preset power supply cycles are as follows:

[0020] In the first preset power supply cycle, the bagging fan operates under 75% duty cycle;

[0021] In the second preset power supply cycle, the bagging fan operates under 80% duty cycle;

[0022] In the third preset power supply cycle, the bagging fan operates under 85% duty cycle;

[0023] In the fourth preset power supply cycle, the bagging fan operates under 90% duty cycle;

[0024] During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

[0025] The present invention further defines a plurality of preset power supply cycles for powering the bag-making fan, which may be five preset power supply cycles, wherein the power supply time of each preset power supply cycle is 2 seconds, and the power supply voltage of the bag-making fan is set to 10V; and the duty ratios of the bag-making fan in the five preset power supply cycles are as follows:

[0026] In the first preset power supply cycle, the bagging fan operates at 60% duty cycle;

[0027] In the second preset power supply cycle, the bagging fan operates under 65% duty cycle;

[0028] In the third preset power supply cycle, the bagging fan operates under 70% duty cycle;

[0029] In the fourth preset power supply cycle, the bagging fan operates under 80% duty cycle;

[0030] During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

[0031] Through the above technical solution: the present invention sets a controller to control the bag-laying fan to work under gradually increasing working power conditions, and simultaneously uses the garbage bag detection device to detect the laying status of the garbage bags. When it is detected that the garbage bags have been laid, the bag-laying fan is promptly controlled to stop. Through this technical solution, a large number of garbage bags can be laid under low power conditions, and a small number of garbage bags that are difficult to lay can be laid under high power conditions, thereby avoiding all garbage bags from being laid under high power conditions, thereby achieving the technical purpose of saving electricity and extending product life.

[0032] The present invention also provides the following technical solution 2:

[0033] A smart trash can applies the aforementioned bag-laying fan control method to control the bag-laying fan.

[0034] In summary, the present invention has the following beneficial effects:

[0035] The present invention enables a large number of garbage bags to be laid under low-power conditions, and a small number of garbage bags that are difficult to lay under high-power conditions, thereby avoiding the laying of all garbage bags under high-power conditions, thereby achieving the technical purpose of saving electricity and extending product life. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is the overall principle block diagram of the bag-laying fan control method of the present invention;

[0037] Figure 2 This is a block diagram of a first embodiment of the bag-laying fan control method principle of the present invention;

[0038] Figure 3 This is a block diagram of a second embodiment of the bag-making fan control method principle of the present invention;

[0039] Figure 4 This is a functional block diagram of the bag-laying fan control system in the intelligent trash can of the present invention.

[0040] Reference numerals: 1. bag-laying fan; 2. controller; 3. garbage bag detection device; 4. power supply. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0042] Before disclosing the bag-laying fan control method of the intelligent trash can, the hardware configuration required by the control method is disclosed first. The present invention discloses a bag-laying fan control system in the intelligent trash can, combined with Figure 1 and Figure 4It can be seen that it includes a bag-laying blower 1, a controller 2, a garbage bag detection device 3 and a power supply 4. The power supply 4 is electrically connected to the bag-laying blower 1 for powering the bag-laying blower 1. The garbage bag detection device 3 is installed inside the barrel body of the smart trash can, and the garbage bag detection device 3 is usually configured as an infrared transmitter and an infrared receiver. During installation, the infrared transmitter is installed on the bottom or side wall of the barrel body, and the infrared receiver is installed on the side wall or bottom of the barrel body, so that the garbage bag detection device 3 uses a cross-beam method to detect whether there is a laid garbage bag near the bottom of the barrel body. The garbage bag detection device 3 is communicatively connected to the controller 2, and the garbage bag detection device 3 transmits the detection signal to the controller 2. The controller 2 then controls the connection to the bag-laying blower 1. The controller 2 controls the working state of the bag-laying blower 1 by obtaining the detection signal detected by the garbage bag detection device 3.

[0043] In the hardware configuration of the bag-laying blower control system within the intelligent trash can of the present invention, the aforementioned controller 2 is not only used to control the bag-laying blower 1 based on the detection results of the trash bag detection device 3. The controller 2 is also used to define the full operating cycle of the bag-laying blower 1 as multiple preset power cycles and control the power supplied to the bag-laying blower 1 within each of the multiple preset power cycles. The bag-laying blower 1 operates at progressively increasing power levels within each of the preset power cycles. In this embodiment, the power supply voltage of the power supply 4 remains unchanged. The controller 2 controls the duty cycle of the power supplied to the bag-laying blower 1 by the power supply 4, thereby varying the average operating voltage within the cycle. This allows the bag-laying blower 1 to operate at progressively increasing power levels within each of the preset power cycles. Specifically, the power supply voltage of the power supply 4 remains unchanged, while the controller 2 controls the duty cycle of the power supply voltage within the preset power cycles to gradually increase. Of course, in other embodiments, multiple power supplies 4 with different supply voltages can be directly used, and the power supply 4 with gradually increasing supply voltages can be controlled to supply power in different preset power supply cycles, so that the bag-making blower 1 can operate under gradually increasing working power conditions in different preset power supply cycles. Alternatively, in other embodiments, other equivalent methods can be used to ultimately achieve the goal of changing the working power of the bag-making blower 1 to be considered as the same working mode.

[0044] As described above, the controller 2 controls the bag-laying blower 1 to operate under gradually increasing working power conditions in different preset power supply cycles. However, after starting the program for laying garbage bags, no matter in any preset power supply cycle, the garbage bag detection device 3 always detects the laying status of the garbage bags after starting the program for laying garbage bags. When the garbage bag detection device 3 detects that the laying of the garbage bags is completed, the controller 2 controls the bag-laying blower 1 to cut off the power.

[0045] According to the above bag-laying fan control system, the bag-laying fan control method of the intelligent trash can of the present invention is as follows: Figure 1As shown, the control steps include the following:

[0046] (1) Define multiple preset power supply cycles for powering the bagging fans.

[0047] (2) During the continuous preset power supply cycle, the bag-laying fans are controlled to operate under gradually increasing working power conditions.

[0048] (3) During the entire preset power supply cycle, the laying status of the garbage bags is synchronously detected.

[0049] (4) Determine whether the garbage bags have been laid.

[0050] (5) If yes, control the bag-laying fan to cut off power in advance and stop working.

[0051] After determining whether the garbage bag is laid, if not, determine whether it is in the preset power supply cycle; if yes, return to detect the laying status of the garbage bag; if not, control the bag laying fan to cut off power, stop working, and alarm.

[0052] The gradually increasing operating power condition means that the supply voltage remains unchanged, and the duty cycle of the supply voltage is controlled to gradually increase within a continuous preset power supply cycle.

[0053] Combine Figure 2 The first embodiment in which the duty cycle of the power supply voltage gradually increases within consecutive preset power supply cycles is to first define multiple preset power supply cycles for powering the bag-making blower in this embodiment. It is assumed that five preset power supply cycles are defined, and the power supply time of each preset power supply cycle is 2S, and the power supply voltage of the bag-making blower is set to 10V.

[0054] The duty cycle ratios of the bagging fan in the five preset power supply cycles are as follows:

[0055] In the first preset power supply cycle, the bagging fan operates under 75% duty cycle;

[0056] In the second preset power supply cycle, the bagging fan operates under 80% duty cycle;

[0057] In the third preset power supply cycle, the bagging fan operates under 85% duty cycle;

[0058] In the fourth preset power supply cycle, the bagging fan operates under 90% duty cycle;

[0059] During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

[0060] Combine Figure 3The second embodiment in which the duty cycle of the power supply voltage gradually increases within consecutive preset power supply cycles is that, first, in this embodiment, multiple preset power supply cycles for powering the bag-making blower are defined. It is assumed that five preset power supply cycles are defined, and the power supply time of each preset power supply cycle is 2S, and the power supply voltage of the bag-making blower is set to 10V.

[0061] The duty cycle ratios of the bagging fan in the five preset power supply cycles are as follows:

[0062] In the first preset power supply cycle, the bagging fan operates at 60% duty cycle;

[0063] In the second preset power supply cycle, the bagging fan operates under 65% duty cycle;

[0064] In the third preset power supply cycle, the bagging fan operates under 70% duty cycle;

[0065] In the fourth preset power supply cycle, the bagging fan operates under 80% duty cycle;

[0066] During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

[0067] Regardless of the first embodiment or the second embodiment above, when the garbage bags are laid using the bag-laying fan control method in the intelligent trash can of the present invention, most of the garbage bags have been laid within the first preset power supply cycle and there is no need to go to the subsequent preset power supply cycle; a small number of garbage bags are laid within the second preset power supply cycle or the third preset power supply cycle; and a very small number of garbage bags are laid within the fourth preset power supply cycle or the fifth preset power supply cycle; overall, the battery consumption is greatly reduced, and the success rate of laying the garbage bags can be guaranteed to remain unchanged.

[0068] Finally, the present invention also provides an intelligent trash can, in which the aforementioned bag-making fan control method is used to control the bag-making fan, or the intelligent trash can is equipped with the aforementioned bag-making fan control system.

[0069] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A bag-laying fan control method, characterized in that: The invention is applied to an intelligent trash can, which comprises a bag-laying blower (1), a controller (2), a garbage bag detection device (3) and a power supply (4). The garbage bag detection device (3) is used to detect the laying state of the garbage bag. The garbage bag detection device (3) is communicatively connected to the controller (2). The controller (2) is control-connected to the bag-laying blower (1). The power supply (4) is electrically connected to the bag-laying blower (1) for supplying power to the bag-laying blower (1). The controller (2) is used to execute the following control steps: Define multiple preset power supply cycles for powering the bagging fans; During the continuous preset power supply cycles, the bag-laying fans are controlled to operate at gradually increasing operating power conditions; During the entire preset power supply cycle, the laying status of the garbage bags is synchronously detected; Determine whether the garbage bags have been laid; If so, control the bag-making fan to cut off power in advance and stop working.

2. A bag-laying fan control method according to claim 1, characterized in that: After determining whether the garbage bag is laid, if not, further determining whether it is in a preset power supply cycle; If yes, return to check the laying status of the garbage bag; if no, control the bag laying fan to cut off the power, stop working, and alarm.

3. The bag-laying fan control method according to claim 1, characterized in that: The gradually increasing working power condition means that the supply voltage remains unchanged, and the duty cycle of the supply voltage is controlled to gradually increase within the continuous preset power supply cycle.

4. A bag-laying fan control method according to claim 3, characterized in that: The multiple preset power supply cycles for the bag-making fan may be defined as five preset power supply cycles, each of which has a power supply time of 2 seconds and a power supply voltage of 10V; and the duty ratios of the bag-making fan in the five preset power supply cycles are as follows: In the first preset power supply cycle, the bagging fan operates under 75% duty cycle; In the second preset power supply cycle, the bagging fan operates under 80% duty cycle; In the third preset power supply cycle, the bagging fan operates under 85% duty cycle; In the fourth preset power supply cycle, the bagging fan operates under 90% duty cycle; During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

5. The bag-laying fan control method according to claim 3, characterized in that: The multiple preset power supply cycles for the bag-making fan may be defined as five preset power supply cycles, each of which has a power supply time of 2 seconds and a power supply voltage of 10V; and the duty ratios of the bag-making fan in the five preset power supply cycles are as follows: In the first preset power supply cycle, the bagging fan operates at 60% duty cycle; In the second preset power supply cycle, the bagging fan operates under 65% duty cycle; In the third preset power supply cycle, the bagging fan operates under 70% duty cycle; In the fourth preset power supply cycle, the bagging fan operates under 80% duty cycle; During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

6. A bag-laying fan control system according to claim 1, characterized in that: The garbage bag detection device (3) is equipped with an infrared transmitter and an infrared receiver.

7. The bag-laying fan control system according to claim 1, characterized in that: The power supply voltage of the power supply (4) remains unchanged, and the controller (2) controls the duty cycle of the power supply voltage within a preset power supply cycle to gradually increase.

8. A bag-laying fan control system according to claim 7, characterized in that: The power supply voltage of the power supply (4) is 10V, the preset power supply cycle is defined as five preset power supply cycles, and the power supply time of each preset power supply cycle is 2S; The duty cycle ratios of the bagging fan in the five preset power supply cycles are as follows: In the first preset power supply cycle, the bagging fan operates at 60% duty cycle; In the second preset power supply cycle, the bagging fan operates under 65% duty cycle; In the third preset power supply cycle, the bagging fan operates under 70% duty cycle; In the fourth preset power supply cycle, the bagging fan operates under 80% duty cycle; During the fifth preset power cycle, the bagging fan operates under 100% duty cycle conditions.

9. A smart trash can, characterized in that: The smart trash can applies the bag-laying fan control method as described in any one of claims 1 to 8 to control the bag-laying fan.

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