A lifting control device

Abstract

A lifting control device relates to a control technology field, including a cabinet, a cabinet door, and a control device. The control device includes a sensor for sensing human body, an MCU control circuit, a sensing controller, and a reset sensor located next to the cabinet door. The MCU control circuit is an MCU control circuit that controls a motor power mechanism to run at a set speed and a set time through a program to drive the cabinet door to move a set distance. The sensor for sensing human body includes a touch sensing component arranged at the bottom of the cabinet door, and a sensing circuit connected to the touch sensing component that can sense capacitance changes. The signal output end of the sensing controller, the signal output end of the reset sensor, and the electrical signal output end of the sensing circuit are connected to the matching electrical signal input end of the MCU control circuit. Compared with the existing technology, the utility model has the advantages of ensuring smooth lifting, preventing the occurrence of top collision and descending hand pinching, rich cabinet door travel, and meeting various usage requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of control, in particular to a lifting control device. Background Art

[0002] The lifting of existing doors, such as the lifting of the mirror located in front of a bathroom mirror cabinet, may cause the mirror to hit the top or fall and pinch the hand. The existing technology generally uses a switch to control the lifting stroke of the mirror to prevent the lifting stroke or pinching the hand. The switch is used to control the lifting stroke of the mirror. Since the switch is often touched and easily touched by the outside world, and the switch has a service life, once a failure occurs or the switch malfunctions due to external touch, the mirror cannot be lifted and lowered smoothly, and even the safety situation of hitting the top or falling and pinching the hand may occur. In addition, determined by the existing technology, the mirror stroke is single and cannot meet various usage requirements. Summary of the invention

[0003] The purpose of the invention of the utility model is to provide a lifting control device which can overcome one or more of the above-mentioned shortcomings, ensure smooth lifting and lowering, prevent the occurrence of top collision and hand pinching during descent, have a rich cabinet door travel, and can meet various usage requirements.

[0004] The utility model lifting control device is implemented as follows, including a cabinet, a cabinet door driven to move up and down by a motor power mechanism, and a control device for controlling the operation of the motor power mechanism. The special feature of the utility model is that the control device includes a sensor for sensing a human body, an MCU control circuit, a sensing controller, and a reset sensor located next to the cabinet door. The MCU control circuit is an MCU control circuit that controls the motor power mechanism to run at a set speed and a set time through a program to drive the cabinet door to move a set distance. The sensor for sensing a human body includes a touch sensing component arranged at the bottom of the cabinet door, and a sensing circuit connected to the touch sensing component and capable of sensing changes in electronic characteristics. The signal output end of the sensing controller, the signal output end of the reset sensor, and the electrical signal output end of the sensing circuit are connected to the matching electrical signal input end of the MCU control circuit.

[0005] During operation, when the cabinet door needs to be opened, the induction controller is touched (such as by touching the touch button on the cabinet door, or by shaking the hand in front of the touch switch of the cabinet door, or by voice control). After the MCU control circuit receives the signal from the induction controller, it controls the motor power mechanism to work at a set speed for a set time according to the preset control program until the cabinet door rises to the set position, thereby achieving the effect of opening the cabinet door and making the lifting and lowering smooth;

[0006] Since the MCU control circuit controls the motor power mechanism to work at a set speed and for a set time according to a preset control program, multiple running strokes can be set to make the cabinet door rise in sections to achieve partial or full opening of the cabinet door. Such control only requires setting multiple control modes (such as multiple gestures or multiple languages). The cabinet door has a rich stroke range to meet a variety of usage requirements.

[0007] When the cabinet door needs to be closed, the induction controller is triggered. After the MCU control circuit receives the signal from the induction controller, it controls the motor power mechanism to work at a set speed for a set time according to a preset control program until the cabinet door drops to a set position, thereby achieving the effect of closing the cabinet door.

[0008] When the door passes the reset sensor, the reset sensor is triggered. After receiving the control signal from the reset sensor, the MCU control circuit controls the starting position of the motor power mechanism to return to zero, so as to prevent the cumulative error after multiple door openings and closings, resulting in the door falling to the wrong closing position, or the door rising to the wrong opening position.

[0009] When the cabinet door is descending, a person's hand reaches into the cabinet door, causing the touch sensing component at the bottom of the cabinet door to come into contact with the person's hand, causing the circuit characteristics of the sensor that senses the human body to change, and then causing the nature of the output electrical signal to change (for example, under normal circumstances, the capacitance of the sensor that senses the human body is C1, and the output electrical signal is I1. The contact between the touch sensing component and the person's hand causes the capacitance to change to C2, and the corresponding electrical signal changes to I2). After the MCU control circuit senses the change in the electrical signal, it determines that the person's hand is within the range of the cabinet door's descent, and controls the motor power mechanism to stop working until the person's hand leaves the touch sensing component at the bottom of the cabinet door and the output electrical signal returns to its original signal characteristics. Only then does the MCU control circuit sense the change in the electrical signal and control the motor power mechanism to continue working.

[0010] Preferably, an anti-top-collision switch is provided on the top of the cabinet. The anti-top-collision switch is used to prevent the cabinet door from continuing to move upward when the cabinet door exceeds the set operating height in the event of an accident, thereby preventing the cabinet door from hitting the top accidentally.

[0011] Compared with the prior art, the utility model has the advantages of ensuring smooth lifting and lowering, preventing the occurrence of top collision and hand pinching during descent, and having a rich cabinet door travel to meet various usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of the lifting control device of the utility model;

[0013] Figure 2 It is a structural diagram of the belt and pulley parts.

[0014] Explanation of reference numerals: a-control device; 1-cabinet; 2-motor power mechanism; 201-motor mechanism; 202-transmission mechanism; 203-pulley; 204-belt; 3-cabinet door; 4-guide rail; 5-sensor; 501-touch sensing component; 502-sensing circuit; 503-switch structure; 6-MCU control circuit; 7-sensing controller; 8-reset sensor; 9-anti-top-impact switch. DETAILED DESCRIPTION

[0015] The lifting control device of the utility model is now described in further detail with reference to the accompanying drawings and embodiments:

[0016] As shown in the figure, the lifting control device of the utility model is implemented as follows, including a cabinet 1, a cabinet door 3 (a mirror door with a mirror in front) driven by a motor power mechanism 2 to move up and down, and a control device a for controlling the operation of the motor power mechanism 2. The cabinet door 3 moves up and down along the guide rails 4 on both sides of the cabinet 1. The motor power mechanism 2 includes a motor mechanism 201, upper and lower pulleys 203 located at the guide rails 4 driven by the motor mechanism through a transmission mechanism 202, and a belt 204 wound around the upper and lower pulleys 203. The cabinet door 3 is driven up and down by the belt 204 (of course, the cabinet door 3 can also be driven up and down by a rope driven by the motor mechanism through a guide pulley). The special feature of the control device a is that it includes a sensor for sensing the human body. The cabinet door 3 is provided with a touch sensing device 5, an MCU control circuit 6, a sensing controller 7, and a reset sensor 8 located at the starting position of the cabinet door 3 (it can also be any position where the cabinet door moves). The MCU control circuit 6 is an MCU control circuit that controls the motor power mechanism 2 to run at a set speed and a set time through a program to drive the cabinet door 3 to move a set distance. The sensor 5 for sensing the human body includes a touch sensing component 501 arranged at the bottom of the cabinet door 3, and a sensing circuit 502 connected to the touch sensing component 501 and capable of sensing a change in capacitance. The signal output end of the sensing controller 7, the signal output end of the reset sensor 8, and the electrical signal output end of the sensing circuit 502 are connected to the matching electrical signal input end of the MCU control circuit 6.

[0017] Preferably, a switch structure 503 is provided between the touch sensing member 501 and the bottom of the cabinet door 3 (for example, a conductive strip is provided at the bottom of the cabinet door 3, and the touch sensing member 501 is a metal conductive strip, and an insulating elastic space is provided between the conductive strip and the touch sensing member 501. When the conductive strip touches the human body, the conductive strip and the touch sensing member 501 touch each other, thereby forming a loop through the human body grounding, thereby outputting a signal to the MCU control circuit 6 through the sensing circuit 502, and controlling the cabinet door 3 to stop descending, thereby achieving the effect of preventing finger pinching). With the switch structure 503, even if a conductive foreign object (such as water droplets) contaminates the bottom of the cabinet door 3, since the switch structure 503 is in an off state, the sensing circuit 502 will not be triggered to send a control signal to the MCU control circuit 6.

[0018] Preferably, an anti-top-collision switch 9 is provided on the top of the cabinet 1, and the anti-top-collision switch 9 is located above the maximum operating height of the cabinet door 3 (such as 3-8 mm away from the maximum operating height of the cabinet door 3). In this way, the cabinet door 3 will not touch and activate the anti-top-collision switch 9 during normal operation. Of course, the anti-top-collision switch 9 can also be used as a reset sensor 8. When it needs to be reset to eliminate the accumulated error, the cabinet door 3 can be controlled to continue to move upward until it touches the anti-top-collision switch 9, and then move downward 5 mm to the maximum operating height of the cabinet door 3 to reset. Since the position of the anti-top-collision switch 9 is fixed, and the reset operation is generally performed after running for a period of time and having a certain accumulated error, it will not affect the anti-top-collision function of the anti-top-collision switch 9 during normal use.

[0019] Preferably, the reset sensor 8 is arranged below the set bottom position of the cabinet door 3 in the cabinet 1 (e.g., 5 mm away from the set bottom position of the cabinet door 3 in the cabinet 1). During normal operation, the cabinet door 3 moves to the set bottom position of the cabinet 1 according to a preset program under the control of the control device a, and the cabinet 1 is closed. After running for a period of time, when the cabinet door 3 moves to the set bottom position of the cabinet 1 according to a preset program under the control of the control device a, the cabinet door 3 continues to be controlled to continue to move downward to the reset sensor 8, and then moves upward back to the set bottom position of the cabinet door 3 in the cabinet 1 to achieve the reset operation, so as to eliminate the accumulated error generated after running for a period of time.

[0020] During operation, when the cabinet door needs to be opened, the induction controller 7 is touched (for example, by touching the touch button on the cabinet door, or by shaking the hand in front of the touch switch of the cabinet door 3, or by voice control). After the MCU control circuit 6 receives the signal from the induction controller 7, it controls the motor power mechanism 2 to work at a set speed for a set time according to a preset control program until the cabinet door 3 rises to a set position, thereby achieving the effect of opening the cabinet door 3 and making the lifting and lowering smooth;

[0021] Since the MCU control circuit controls the motor power mechanism 2 to work at a set speed for a set time according to a preset control program, multiple running strokes can be set to make the cabinet door rise in sections to achieve partial or full opening of the cabinet door. Such control only requires setting multiple control modes (such as multiple gestures or multiple languages). The cabinet door has a rich stroke range and can meet a variety of usage requirements.

[0022] When the cabinet door 3 needs to be closed, the sensing controller 7 is touched. After the MCU control circuit 6 receives the signal from the sensing controller 7, it controls the motor power mechanism 2 to work at a set speed for a set time according to a preset control program until the cabinet door 3 drops to a set position, thereby achieving the effect of closing the cabinet door 3;

[0023] When the cabinet door 3 descends to the starting position, the reset sensor 8 is triggered. After receiving the control signal of the reset sensor 8, the MCU control circuit 6 controls the starting position of the motor power mechanism 2 to return to zero, so as to prevent the cumulative error after multiple door openings and closings, resulting in the cabinet door 3 descending to the wrong door closing position, or the cabinet door 3 rising to the wrong door opening position;

[0024] When the cabinet door 3 is in the process of descending, a person's hand reaches into the cabinet door, causing the touch sensing component 501 at the bottom of the cabinet door to contact the person's hand, causing the circuit characteristics of the sensor 5 that senses the human body to change, and then causing the properties of the output electrical signal to change (for example, under normal circumstances, the capacitance of the sensor that senses the human body is C1, and the output electrical signal is I1. The contact between the touch sensing component 501 and the person's hand causes the capacitance to change to C2, and the corresponding electrical signal changes to I2). After the MCU control circuit 6 senses the change in the electrical signal, it determines that the person's hand is within the range of the cabinet door 3's descent, and controls the motor power mechanism 2 to stop working until the person's hand leaves the touch sensing component 501 at the bottom of the cabinet door 3 and the output electrical signal returns to the original signal characteristics. Only then does the MCU control circuit 6 control the motor power mechanism 2 to continue working.

Claims

1. A lifting control device, comprising a cabinet, a cabinet door driven up and down by a motor power mechanism, and a control device for controlling the operation of the motor power mechanism, characterized in that: The control device includes a sensor for sensing the human body, an MCU control circuit, a sensing controller, and a reset sensor located next to the cabinet door. The MCU control circuit is an MCU control circuit that controls a motor power mechanism to run at a set speed and a set time through a program to drive the cabinet door to move a set distance. The sensor for sensing the human body includes a touch sensing component arranged at the bottom of the cabinet door, and a sensing circuit connected to the touch sensing component and capable of sensing capacitance changes. The signal output end of the sensing controller, the signal output end of the reset sensor, and the electrical signal output end of the sensing circuit are connected to the matching electrical signal input end of the MCU control circuit.

2. The lifting control device according to claim 1, characterized in that: An anti-top switch is arranged on the top of the cabinet.

3. The lifting control device according to claim 2, characterized in that: The anti-top-impact switch is located above the highest operating height of the cabinet door.

4. The lifting control device according to claim 3, characterized in that: The anti-top impact switch is located 3-8 mm from the maximum operating height of the cabinet door.

5. The lifting control device according to claim 1, 2, 3 or 4, characterized in that: The reset sensor is disposed below the cabinet door at a set bottom position of the cabinet.

6. The lifting control device according to claim 1, 2, 3 or 4, characterized in that: A switch structure is arranged between the touch sensing component and the bottom of the cabinet door.

7. The lifting control device according to claim 5, characterized in that: A switch structure is arranged between the touch sensing component and the bottom of the cabinet door.

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