CN215205049U

CN215205049U - Electric adjusting controller

Info

Publication number: CN215205049U
Application number: CN202121258320.9U
Authority: CN
Inventors: 刘宇翔; 吴乐; 蒋金融
Original assignee: Hite Automotive Technology Suzhou Co ltd
Current assignee: Hite Automotive Technology Suzhou Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-12-17
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses an electronic regulation controller belongs to the electronic regulation controller technical field of car, change 5V module, MCU and watchdog, CAN communication circuit and button including 12V 24V power and 12V 24V, MCU be connected with the temperature detection module of voltage detection module, current detection module and PCB board end of 12V 24V power respectively, MCU's control port be connected with MOSFET drive circuit's control end, MOSFET drive circuit's output link to each other with motor drive circuit, motor drive circuit be connected with electric adjustment mechanism, electric adjustment mechanism constitute signal transmission return circuit through Hall signal circuit and MCU. The scheme of MCU and Hall sensor is adopted, the control precision is high, and the memory is accurate; the position is controlled accurately; the MOSFET has the advantages of high driving integration level, complete protection function, small number of devices, small circuit board area and stable and reliable performance.

Description

Electric adjusting controller

Technical Field

The utility model discloses an electronic regulation controller belongs to the electronic regulation controller technical field of car.

Background

An electric adjustment mechanism for an automobile generally refers to a mechanism for electrically adjusting the position of a seat, a backrest, a steering wheel, and the like of an automobile. The control drive of the electric actuating mechanism is also referred to as an electric actuating control. The existing electric adjusting controller generally supplies power for 12V or 24V, and adjusts the angle change and the relative height change of mechanisms such as a seat, a backrest, a steering wheel and the like by controlling the operation of a motor. Under the actual vehicle condition, the steering wheel of the vehicle and the seat of the vehicle need to be adjusted according to the height and the body shape of a driver and a passenger, and the steering wheel and the seat are adjusted to be suitable for the driver and the passenger.

The existing electric adjusting controller has poor power supply compatibility, cannot be compatible with 12V and 24V power supply systems at the same time, has no fault feedback function, cannot feed back the working state of the electric adjusting controller outwards, has poor safety, does not have fault diagnosis and fault indication, and is not suitable for a whole vehicle with higher performance requirements.

Disclosure of Invention

The utility model discloses realize an electronic regulation controller, divide into power module, detection control module, drive module according to the function.

The power module includes: a 12V/24V to 5V power interface;

the detection control module comprises: the device comprises an MCU module, a voltage detection module, a temperature detection module, a current detection module, a Hall signal circuit and an information feedback module;

the driving module includes: MOSFET drive circuit and motor drive circuit.

The electronic position regulator has the advantages of complete functions, reliable performance, simple control algorithm and good power supply compatibility, and can be used for driving electronic position regulators with the voltage of 12V or 24V within 200W.

The utility model provides an electronic regulation controller, includes 12V 24V power and 12V 24V changes 5V module, MCU and watchdog, CAN communication circuit and button, MCU be connected with the voltage detection module of 12V 24V power, current detection module and the temperature detection module of PCB board end respectively, MCU's control port be connected with MOSFET drive circuit's control end, MOSFET drive circuit's output link to each other with motor drive circuit, motor drive circuit be connected with electronic adjustment mechanism, electronic adjustment mechanism constitute signal transmission circuit through Hall signal circuit and MCU.

The MOSFET driving circuit is composed of a switching circuit consisting of NPN and PNP triode geminate transistors. The main function of the circuit is to convert TTL level PWM signal generated by MCU into 12V signal to drive the switch of MOSFET.

The Hall signal circuit is composed of an operational amplifier circuit consisting of an operational amplifier circuit, a resistor and a capacitor, and has the main functions of detecting Hall signals, interference resistance, stable performance and the like.

When the electric steering wheel works, the controller is arranged at the adjusting position of the electric steering wheel, is connected with the adjusting mechanism of the electric steering wheel through a hard wire, and controls the electric adjuster through the keys to realize the adjustment of the angle and the height of the electric steering wheel; the memory setting key can be pressed down to realize the memory function when the memory is adjusted to a proper position, when the memory is finished, the position does not need to be adjusted again when the vehicle is loaded again next time, and the position can be adjusted only by pressing the corresponding memory key; when the electric adjusting controller has a fault, the controller can take corresponding measures to protect the controller and the adjusting mechanism (if foreign matter is stuck in the mechanism, the controller can stop the mechanism from running), a fault signal is displayed through a fault indicating signal line, and meanwhile, a communication interface of the controller can also send a fault code.

The controller is arranged at the adjusting position of the electric seat, is connected with the adjusting mechanism of the electric seat through a hard wire, and controls the electric adjuster through a key to realize the adjustment of the longitudinal position and the backrest angle of the electric seat; the memory setting key can be pressed down to realize the memory function when the memory is adjusted to a proper position, when the memory is finished, the position does not need to be adjusted again when the vehicle is loaded again next time, and the position can be adjusted only by pressing the corresponding memory key; when the electric adjusting controller has a fault, the controller can take corresponding measures to protect the controller and the adjusting mechanism (if foreign matter is stuck in the mechanism, the controller can stop the mechanism from running), a fault signal is displayed through a fault indicating signal line, and meanwhile, a communication interface of the controller can also send a fault code.

The utility model has the advantages as follows:

two power supply systems of 12V and 24V can be compatible; the system has complete functions, can monitor voltage, current and temperature, has a fault diagnosis function and is high in system safety; the scheme of MCU and Hall sensor is adopted, the control precision is high, and the memory is accurate; the position is controlled accurately; the MOSFET has the advantages of high driving integration level, complete protection function, small number of devices, small circuit board area and stable and reliable performance.

Drawings

FIG. 1 is a schematic view of the connection of a controller with an adjustment mechanism and a vehicle body;

FIG. 2 is a block diagram of the electrical regulation control circuit connections; in the figure: 1. the device comprises a 12V/24V power supply module, a 2V/24V to 5V module, a 3 vehicle body, a 4 voltage detection module, a 5 temperature detection module, a 6 CAN communication circuit, a 7 button, an 8 MCU, a 9 MOSFET driving circuit, a 10 watchdog, a 11 motor driving circuit, a 12 current detection module, a 13 Hall signal circuit, a 14 electric adjusting mechanism;

FIG. 3 is a circuit for converting 12V/24V to 5V in the controller;

FIG. 4 is a MOSFET driver circuit in the controller;

FIG. 5 illustrates a voltage detection circuit in the controller;

FIG. 6 is a circuit for detecting current in the controller;

FIG. 7 is a Hall signal circuit;

fig. 8 is a watchdog circuit.

Detailed Description

The following further description is made in conjunction with the accompanying drawings and specific embodiments.

Example one

Referring to fig. 1, the electric adjusting mechanism is connected to the controller and the real vehicle, the vehicle body sends an instruction to the controller through a hard wire to control the electric adjusting mechanism to operate, and the controller also feeds back the state of the controller to the vehicle body through the hard wire;

two kinds of power supply system of compatible 12V of this embodiment and 24V adopt high performance MOSFET to drive DC motor, adopt the Hall sensor to carry out position detection, and control is accurate, and system integration MCU gathers signals such as voltage, electric current, temperature, Hall, and is multiple functional, and it is stable to have watchdog performance, and the security is high.

Referring to fig. 2, in an overall structure of the embodiment, a 12V/24V power supply module 1 is connected to a 12V/24V to 5V module 2, a voltage detection module 4, a MOSFET driving module 9 and a motor driving module 11, and the 12V/24V to 5V module 2 converts a 12V/24V power supply into 5V and then is connected to an MCU8 and a MOSFET driving circuit 9; the voltage detection module 4 transmits the value of the 12V/24V power supply module 1 to the MCU8 for detection; the temperature detection module 5 converts the temperature of the PCB end into analog quantity and transmits the analog quantity to the MCU 8; the CAN communication circuit 6 is connected with the MCU8 and the vehicle body 3, transmits an external instruction signal to the MCU8, and transmits a feedback signal of the MCU8 to the external vehicle body 3; the key 7 is connected with the MCU8 and used for controlling the action direction and memorizing the setting, the MCU8 is connected with the MOSFET drive circuit 9, the MOSFET drive circuit 9 is connected with the motor drive circuit 11, the motor drive circuit 11 is connected with the electric adjusting mechanism 14, the MCU8 carries out drive parameter configuration on the MOSFET drive circuit 9, and the MOSFET drive circuit 9 drives the motor drive circuit 11 to further drive the electric adjusting mechanism 14; current detection 12 is connected with motor drive circuit 11 and MCU8, detects lower extreme bus current to give MCU8 with the value transmission, watchdog 10 is used for detecting system reliable and stable.

The electric adjusting mechanism of car needs speed governing and state feedback at the operation in-process, and probably breaks down (if the card is dead, idle running or overheated the condition etc.), needs the controller to take corresponding safeguard measure when breaking down, the utility model has the advantages that the controller can be interacted with the automobile body, has speed governing function and state feedback function, and the controller can take corresponding measure to protect when the trouble takes place, avoids producing serious consequence.

The specific circuit of each part is as follows:

referring to fig. 3, a 12V/24V to 5V circuit is shown, wherein a 12V/24V power circuit mainly comprises a TVS, a capacitor, a resistor, an inductor, a mosfet, and a power conversion chip, and the circuit mainly functions to convert a 12V/24V voltage to 5V, provide power for an MCU, a pre-driver chip, a sampling circuit, and the like, and can be controlled by the MCU to switch on and off a 5V power supply, thereby saving power consumption when the 5V power supply is not needed.

Referring to fig. 4, the MOSFET driving circuit mainly includes a diode, a transistor, a resistor, and a capacitor, and the main function of the circuit is to convert a TTL level PWM signal generated by the MCU into a 12V signal to drive the MOSFET switch;

referring to fig. 5, the voltage detection circuit mainly includes a diode, a resistor, and a capacitor, and the circuit mainly functions to detect the voltage of the motor and represent the current working state;

referring to fig. 6, the current detection circuit mainly comprises an operational amplifier, a resistor and a capacitor, and has the main function of detecting the bus current and the functions of overcurrent, overload and dry running protection;

referring to fig. 7, the Hall signal circuit mainly includes an operational amplifier, a resistor, and a capacitor, and the circuit mainly functions to detect Hall signals, and has the functions of interference resistance, stable performance, and the like;

referring to fig. 8, the watchdog circuit mainly includes a watchdog, a resistor, and a capacitor, and the watchdog circuit mainly functions to implement a watchdog function and has a system stability and reliability function.

Claims

1. An electric regulation controller comprises a 12V/24V power supply, a 12V/24V-to-5V module, an MCU, a watchdog, a CAN communication circuit and a key, wherein the MCU is respectively connected with a voltage detection module and a current detection module of the 12V/24V power supply and a temperature detection module of a PCB board end, and is characterized in that a control port of the MCU is connected with a control end of an MOSFET drive circuit, an output end of the MOSFET drive circuit is connected with a motor drive circuit, the motor drive circuit is connected with an electric regulation mechanism, and the electric regulation mechanism forms a signal transmission loop with the MCU through a Hall signal circuit.

2. The electric regulator controller according to claim 1, wherein the MOSFET driving circuit is formed by a switching circuit comprising NPN and PNP triode pair transistors.

3. The electrical regulator controller according to claim 1, wherein the Hall signal circuit comprises an operational amplifier circuit comprising an operational amplifier circuit, a resistor and a capacitor.