CN215420038U

CN215420038U - Linear driver drive control system

Info

Publication number: CN215420038U
Application number: CN202121145581.XU
Authority: CN
Inventors: 周唯; 赵玉树; 宋璟; 郭文冰; 孔铭; 姜涛
Original assignee: Emomo Technology Co Ltd
Current assignee: Emomo Technology Co Ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2022-01-04
Anticipated expiration: 2031-05-26

Abstract

The utility model discloses a drive control system of a linear driver, which comprises a controller, a motor drive module, a motor and a position control module, wherein a power supply module is connected with the controller, the controller is connected with the control end of the motor drive module, the position control module is connected between the controller and the motor drive module in series to form a control loop, the power supply module is directly or indirectly connected with the drive end of the motor drive module and inputs power to the motor drive module, and the motor drive module is connected with the motor to form a drive loop. The control loop controls the work of the driving loop, the driving loop is directly connected with the motor and the power supply in series through the motor driving module to form a loop, the length and the connection point of the loop are reduced, unnecessary line loss and connection point loss are reduced, and the effect of directly driving the linear driver by adopting a +12V power supply can be realized.

Description

Linear driver drive control system

Technical Field

The utility model discloses a control system, in particular relates to a linear driver driving control system, and belongs to the field of intelligent home accessory control.

Background

The linear driver may also be referred to as a linear driver or a linear push rod, or simply a push rod. The linear motion adjusting device is widely applied to various intelligent furniture, such as intelligent sofas, intelligent beds, massage chairs and the like, and can adjust various attitude parameters of the intelligent furniture through the linear motion of the linear driver, such as: height, tilt angle, fore-aft position, etc.

The conventional linear driver is usually provided with an external driving power supply for use, the general rated voltage of the external power supply is +24V, and the external power supply of the linear driver sometimes reaches +29V due to errors of electronic components such as a transformer and the like. Referring to fig. 1 and 2, a conventional linear actuator has a driving control loop of power → controller → motor → position control module, and all load and control switch modules are connected in series to form a closed loop.

When the linear driver is installed on a vehicle for use, because the normal rated voltage of a vehicle-mounted low-voltage power supply is +12V (the working voltage may reach + 12.8V- +13.6V), a driving control loop of the conventional linear driver is adopted, and the phenomenon that the linear driver cannot normally work is caused due to the long control loop and the large line loss and node resistance. If the +12V power supply is converted into the +24V power supply through the transformer, an external transformer is added, and therefore the use cost is increased.

Disclosure of Invention

In view of the above-mentioned disadvantage that the conventional linear actuator cannot be driven by a +12V power supply in the prior art, the present invention provides a linear actuator driving control system, which includes a driving circuit and a control circuit, wherein the control circuit controls the operation of the driving circuit, and the driving circuit is directly connected in series with a motor and a power supply through a motor driving module to form a circuit, so as to reduce the length and connection point of the circuit, thereby reducing unnecessary line loss.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a linear driver drive control system, drive control system includes the controller, motor drive module, motor and position control module, power module is connected with the controller, the controller is connected with motor drive module's control end, position control module series connection is between controller and motor drive module, form control circuit, power module is direct or indirect to be connected with motor drive module's drive end, input power gives motor drive module, motor drive module is connected with the motor, form drive circuit.

The technical scheme adopted by the utility model for solving the technical problem further comprises the following steps:

the motor driving module comprises a diode D2, a diode D3, a relay K1 and a relay K2, anodes/cathodes of the diode D2 and the diode D3 are connected with each other, a cathode/anode of the diode D2 is connected with the position control module, a cathode/anode of the diode D3 is connected with the connecting joint, a control coil of the relay K1 is connected with a diode D3 in parallel, a control coil of the relay K2 is connected with a diode D2 in parallel, normally-open contacts of the relay K1 and the relay K2 are respectively connected with a positive power supply in the power module, normally-closed contacts of the relay K1 and the relay K2 are respectively grounded, and common contacts of the relay K1 and the relay K2 are respectively connected with two ends of the motor M.

A capacitor C1 is connected in parallel with the diode D2, and a capacitor C2 is connected in parallel with the diode D3.

The position control module comprises two travel switches which are respectively a switch KEY-A and a switch KEY-B, a diode D-A is connected with the switch KEY-A in parallel, a diode D-B is connected with the switch KEY-B in parallel, anodes/cathodes of the diode D-A and the diode D-B are connected with each other, a cathode/anode of the diode D-A is connected with the controller, and a cathode/anode of the diode D-B is connected with the motor driving module.

The power module adopts a +12V external power supply or a +12V storage battery or a vehicle-mounted +12V power supply.

The controller adopts a hand controller which is arranged independently.

The controller comprises a power supply input end and two control switches, the two control switches are a switch S1 and a switch S2 respectively, the switch S1 and the switch S2 are both connected with a +12V power supply at one end, and the other end is connected with GND.

And a TVS tube is connected in parallel with the motor.

And the positive power supply input end of the power supply module is connected with a diode D3 in series.

And a capacitor C3 is connected between the positive power supply input end of the power supply module and the ground.

The utility model has the beneficial effects that: the control loop controls the work of the driving loop, the driving loop is directly connected with the motor and the power supply in series through the motor driving module to form a loop, the length and the connection point of the loop are reduced, unnecessary line loss and connection point loss are reduced, and the effect of directly driving the linear driver by adopting a +12V power supply can be realized.

The utility model will be further described with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a block diagram of a conventional linear actuator drive control system.

Fig. 2 is a schematic diagram of a conventional linear actuator drive control system.

Fig. 3 is a schematic diagram of the hand controller circuit of the present invention.

Fig. 4 is a partial block diagram of a linear driver according to the present invention.

Fig. 5 is a partial schematic diagram of a linear driver according to the present invention.

Detailed Description

The present embodiment is a preferred embodiment of the present invention, and other principles and basic structures that are the same as or similar to the present embodiment are within the scope of the present invention.

Referring to fig. 3, 4 and 5 in combination, the present invention mainly includes a controller, a motor driving module, a motor and a position control module, wherein the power module is connected to the controller, the power module inputs power to the controller, the controller is connected to a control end of the motor driving module, the position control module is connected in series between the controller and the motor driving module, and the controller and the position control module control the motor driving module to work, so as to form a control loop, the power module is directly or indirectly connected to a driving end of the motor driving module, and inputs power to the motor driving module, the motor driving module is connected to the motor, so as to drive the motor to work, so as to form a driving loop.

In this embodiment, the power module is implemented by using a +12V external power supply, a +12V storage battery, a vehicle-mounted +12V power supply, or the like, and in this embodiment, the power module is input by using a DC connector, where +12V is a positive terminal of a DC power supply, and GND or ground is a negative terminal of the DC power supply.

In this embodiment, the controller adopts the hand controller that sets up alone, and accessible attach fitting is connected with linear actuator, and during the concrete implementation, the controller also can directly set up on linear actuator. In this embodiment, taking a hand controller as an example, the controller includes a power input terminal, two control switches and a connector, if the controller is directly disposed on the linear driver, the connector is omitted, and a cable is used for direct connection, the two control switches are a switch S1 and a switch S2, respectively, the switch S1 and the switch S2 are both connected to a +12V power supply at one end, and the other end is connected to GND, the common terminal is connected to the control loop, the common terminal of the switch S1 is connected to a connector P3 interface, the common terminal of the switch S2 is connected to a connector P2 interface, when the controller is in operation, one of the switch S1 and the switch S2 is connected to the +12V power supply, and the other is connected to the ground line, so that the positive power supply is connected to the control loop through the switch S1 or the switch S2, thereby controlling forward rotation or reverse rotation of the motor. In this embodiment, the P1 port and the P6 port of the connector are connected to the +12V power supply (for inputting the +12V power to the hand controller via the DC connector) and the GND, respectively, for inputting the DC connector power to the hand controller.

The motor driving module adopts a circuit module which is electrified to control the motor driving module to be capable of conducting in two directions, in the embodiment, the structure of the utility model is described by taking a relay matched with a diode as an example, and when the motor driving module is specifically implemented, circuit forms with other structures can also be adopted. In this embodiment, the motor driving module includes a diode D2, a diode D3, a relay K1 and a relay K2, the diode D2 and the diode D3 are connected in reverse series, that is, anodes of the diode D2 and the diode D3 are connected to each other (in a specific implementation, cathodes of the diode D2 and the diode D3 are connected to each other with the same effect), a cathode of the diode D2 is connected to the position control module, a cathode of the diode D3 is connected to the connection terminal, specifically, a cathode of the diode D3 is connected to a P2 interface of the connection terminal, a control coil of the relay K1 is connected to the diode D3 in parallel, a control coil of the relay K2 is connected to the diode D2 in parallel, normally open contacts of the relays K1 and K2 are respectively connected to a +12V power supply (i.e., a positive power source terminal of the DC terminal in this embodiment), contacts of the relays K1 and K2 are respectively connected to ground (i.e., a ground of the DC terminal in the normally closed embodiment), the common contacts of the relay K1 and the relay K2 are respectively connected with two ends of the motor M, during specific implementation, normally open contacts of the relay K1 and the relay K2 can be respectively grounded, normally closed contacts of the relay K1 and the relay K2 are respectively connected with a +12V power supply (namely, a positive power supply end of a DC connector in the embodiment), and the effects are the same. When a positive power supply is input from a P3 port of the connecting joint, and a P2 port of the connecting joint is grounded (namely, a negative power supply is input), a control loop current is input from a P3 port of the connecting joint, passes through a position control module, passes through a control coil of a relay K1, passes through a diode D2 (at this time, the control coil of the relay K2 is short-circuited by a diode D2), and is output through a P2 port of the connecting joint, at this time, a normally open contact of the relay K1 is closed, a normally closed contact of the relay K2 is opened, the normally closed contact is closed, the drive loop current directly passes through the normally open contact of the relay K1, then flows through the motor M, and then is connected to a power supply cathode (namely, the ground connection) after passing through the normally closed contact of the relay K2, and the motor is supposed to rotate forward; when a positive power supply is input from the P2 port of the connecting joint, and the P3 port of the connecting joint is grounded (namely, a negative power supply is input), the control loop current is input from the P2 port of the connecting joint, and then is output from the P3 port of the connecting joint after passing through the diode D3 (at this time, the control coil of the relay K1 is short-circuited by the diode D3), and then passes through the position control module, at this time, the normally open contact of the relay K2 is closed, the normally closed contact is opened, the normally open contact of the relay K1 is opened, the normally closed contact is closed, the drive loop current passes through the normally open contact of the relay K2, then flows through the motor M, and then is accessed to the negative pole of the power supply (namely, the grounding) after passing through the normally closed contact of the relay K1, and at this time, the motor is reversely rotated.

In this embodiment, the capacitor C1 is connected in parallel with the diode D2, and the capacitor C2 is connected in parallel with the diode D3, so that the working voltages of the relay K1 and the relay K2 are more stable, and the working effect is better.

In the above embodiment, the relay K1 and the relay K2 are used as the motor driving modules for explanation, and in specific implementation, other components may be used, and signals input to the P2 port of the connection terminal and the P3 port of the connection terminal are used as control signals to control the on/off of the motor driving module, so as to realize the reverse rotation of the current flowing through the motor, and further control the forward rotation or the reverse rotation of the motor. If four triodes, MOS tubes, IGBTs and the like are adopted, wherein two triodes are connected into a motor forward rotation loop (namely one is connected between the motor and a positive power supply, and the other is connected between the motor and a negative power supply), two triodes are connected into a motor reverse rotation loop, control ends of the two triodes, the MOS tubes and the IGBTs which are connected into the motor forward rotation loop are connected with a P3 port of a connecting joint, and when the positive power supply is input into a P3 port of the connecting joint, the motor is controlled to rotate forward; and the control ends of two triodes, an MOS (metal oxide semiconductor) tube and an IGBT (insulated gate bipolar transistor) which are connected into the motor reverse rotation loop are connected with the P2 port of the connecting joint, and when a positive power supply is input into the P2 port of the connecting joint, the motor is controlled to reversely rotate. The adoption of a triode, a MOS tube, an IGBT and the like is only one of the embodiments, and components such as a switch chip and the like can be adopted for replacement in specific implementation.

In this embodiment, the position control module includes two travel switches, which are a switch KEY-a and a switch KEY-B, respectively, a diode D-a is connected in parallel with the switch KEY-a, a diode D-B is connected in parallel with the switch KEY-B, the diode D-a and the diode D-B are connected in series in reverse, that is, anodes of the diode D-a and the diode D-B are connected to each other, a cathode of the diode D-a is connected to the connector P3, and a cathode of the diode D-B is connected to the motor driving module. The control loop can be conducted in two directions by the diode D-A and the diode D-B which are connected in series in an opposite direction, and when the switch KEY-A and the switch KEY-B short-circuit the diode D-A and the diode D-B, the control loop is conducted at the position control module. When a positive power supply is input from a P3 port of the connecting joint, the positive power supply passes through the switch KEY-A, then the switch KEY-B is input into the motor driving module, and finally the positive power supply is output through a P2 interface of the connecting joint, at the moment, the motor rotates forwards, the sliding block moves leftwards, when the sliding block touches the switch KEY-A, the sliding block is disconnected, and because the diode D-A is a reverse access control loop, the whole control loop is not conducted when the switch KEY-A is disconnected, the motor stops rotating, the sliding block slides to the end, at the moment, the switch KEY-B and the diode D-B are both conducted, and the end is not influenced to be accessed into the control loop; when the positive power is input to the port P2 of the connection joint, the current flow direction and the working process are just opposite, and the description is omitted here. In the above embodiment, the travel switch is used as the position control module, and in the specific implementation, the hall switch, the mercury switch, and the like may be used, so that the implementation function and the usage are the same.

In this embodiment, the TVS tube T1 and the TVS tube T2 are connected in parallel to the motor M, so that the influence of spike pulse, surge current and the like on the operation of the motor M can be prevented.

In this embodiment, a diode D3 is connected in series on the positive power input end of the driving circuit, when the motor starts, the voltage drops, and the voltage drops to 5V and is set lower, in order to prevent the impact to the charging circuit in the controller caused by the motor starting in the moment, a diode D3 is added here to isolate the power supply, and an energy storage element, namely a capacitor C3, is added to make the power supply smooth and have a better effect, so as to better protect the charging circuit in the controller.

When the utility model is used, a hand controller switch S1 is pressed, a positive power supply in a control loop passes through a switch S1, then is input through a connecting joint P3 interface, and then sequentially passes through a travel switch KEY-A, a diode D-B (or the travel switch KEY-A), a control coil of a relay K1 and a diode D2, and finally is input back to the hand controller through a connecting joint P2 interface to form a complete control loop, at the moment, a normally open contact of the relay K1 in the drive loop is conducted, the positive power supply positively flows into a motor M (from bottom to top in the direction of figure 4, or normally flows from left to right in the direction of figure 4) through the normally open contact of the relay K1, and then normally closes to a negative power supply end through the normally closed contact of the relay K2, at the moment, the motor positively rotates, when a slide block slides to the travel switch KEY-A, the travel switch KEY-A is disconnected, and the travel is ended; when the hand controller switch S2 is pressed, the whole process is reversed, and the description is omitted.

The control loop controls the work of the driving loop, the driving loop is directly connected with the motor and the power supply in series through the motor driving module to form a loop, the length and the connection point of the loop are reduced, unnecessary line loss and connection point loss are reduced, and the effect of directly driving the linear driver by adopting a +12V power supply can be realized.

Claims

1. A linear driver drive control system, characterized by: the drive control system comprises a controller, a motor drive module, a motor and a position control module, wherein a power supply module is connected with the controller, the controller is connected with a control end of the motor drive module, the position control module is connected between the controller and the motor drive module in series to form a control loop, the power supply module is directly or indirectly connected with a drive end of the motor drive module, a power supply is input to the motor drive module, and the motor drive module is connected with the motor to form a drive loop.

2. The linear actuator drive control system of claim 1, wherein: the motor driving module comprises a diode D2, a diode D3, a relay K1 and a relay K2, anodes/cathodes of the diode D2 and the diode D3 are connected with each other, a cathode/anode of the diode D2 is connected with the position control module, a cathode/anode of the diode D3 is connected with the connecting joint, a control coil of the relay K1 is connected with a diode D3 in parallel, a control coil of the relay K2 is connected with a diode D2 in parallel, normally-open contacts of the relay K1 and the relay K2 are respectively connected with a positive power supply in the power module, normally-closed contacts of the relay K1 and the relay K2 are respectively grounded, and common contacts of the relay K1 and the relay K2 are respectively connected with two ends of the motor M.

3. The linear actuator drive control system of claim 2, wherein: a capacitor C1 is connected in parallel with the diode D2, and a capacitor C2 is connected in parallel with the diode D3.

4. The linear actuator drive control system of claim 1, wherein: the position control module comprises two travel switches which are respectively a switch KEY-A and a switch KEY-B, a diode D-A is connected with the switch KEY-A in parallel, a diode D-B is connected with the switch KEY-B in parallel, anodes/cathodes of the diode D-A and the diode D-B are connected with each other, a cathode/anode of the diode D-A is connected with the controller, and a cathode/anode of the diode D-B is connected with the motor driving module.

5. The linear actuator drive control system of claim 1, wherein: the power module adopts a +12V external power supply or a +12V storage battery or a vehicle-mounted +12V power supply.

6. The linear actuator drive control system of claim 1, wherein: the controller adopts a hand controller which is arranged independently.

7. The linear actuator drive control system of claim 1, wherein: the controller comprises a power supply input end and two control switches, the two control switches are a switch S1 and a switch S2 respectively, the switch S1 and the switch S2 are both connected with a +12V power supply at one end, and the other end is connected with GND.

8. The linear actuator drive control system of claim 1, wherein: and a TVS tube is connected in parallel with the motor.

9. The linear actuator drive control system of claim 1, wherein: and the positive power supply input end of the power supply module is connected with a diode D3 in series.

10. The linear actuator drive control system of claim 1, wherein: and a capacitor C3 is connected between the positive power supply input end of the power supply module and the ground.