CN109256908A

CN109256908A - A kind of contactless angle feedback direct current air door executer

Info

Publication number: CN109256908A
Application number: CN201811227878.3A
Authority: CN
Inventors: 杨俊华; 李鄂胜; 陈如虎; 李勇; 郑海法
Original assignee: Hubei Kait Automotive Electronic & Electrical Systems Co Ltd
Current assignee: Hubei Kait Automotive Electronic & Electrical Systems Co Ltd
Priority date: 2018-10-22
Filing date: 2018-10-22
Publication date: 2019-01-22

Abstract

The invention discloses a non-contact angle feedback direct current air door actuator, comprising: a direct current motor, a PCB circuit board, an encoder magnet, and a Hall induction chip. The non-contact angle feedback direct current air door actuator utilizes an existing magnetic rotation code The pulser technology of the electric motor replaces the existing sliding potentiometer angle sensor. The device has a simple structure and strong adaptability to terminal applications. It is easy to create platform-based and intelligent devices for automotive motor actuator products. The measurement technology avoids mechanical friction, and the output signal is a pulse numerical signal, which has the advantage of more stable transmission than the original analog voltage signal. Moreover, with the improvement of electronic parts and chip manufacturing technology, the manufacturing cost and sales of magnetic rotation angle encoder The price is getting lower and lower, and the material cost of the encoder magnet and Hall induction chip in this non-contact angle feedback DC damper actuator is only 2/3 of the original sliding potentiometer.

Description

A kind of contactless angle feedback direct current air door executer

Technical field

The present invention relates to electromechanical integration electronics field of measuring technique, and in particular to a kind of contactless angle feedback direct current Air door executer.

Background technique

Existing air conditioning for automobiles direct current air door executer product is by plastic casing, micro machine (direct current DC MOTOR), plastics The elements such as gear set and position sensor (carbon-film potentiometer), gear wheel output shaft, input and output Plug pin patch bay composition, by micro- Motor power-up rotation drives train of reduction gears and gear wheel output shaft and drives position sensor, position sensor feedback voltage letter Number it is confirmed whether to have arrived at position and power off to control unit (i.e. air conditioning for automobiles ECU), realizes an angle of closed-loop control The device of output；There are also a kind of air door actuator of automobile air-conditioner products to use stepper motor (STEPPER MOTOR), it does not have Position sensor applies pulse signal by ECU controller, and electric impulse signal is converted into opening for mechanical displacement by stepper motor Ring control model.

Air-conditioning direct current air door executer position sensor is generally made of sliding carbon-film potentiometer, it is by metal elastic brush in carbon Partial pressure is slided in film resistance, to detect voltage variety (or angle variable quantity of mechanical location), to realize that actuator position is revolved Turn output function；Since there are mechanical frictions, carbon-film potentiometer is slided in actual use, connecing between bullet brush and carbon film Electric shock resistance can be gradually increased or even wear-out failure, and the voltage signal for exporting motor is abnormal, cause ECU control malfunction or not , there is air door executer quality accident in movement.

Summary of the invention

It is an object of the invention to overcome above-mentioned technical deficiency, a kind of contactless angle feedback direct current air door execution is provided Device solves sliding carbon-film potentiometer in the prior art and there is mechanical friction in actual use and will appear the skill of wear-out failure Art problem.

To reach above-mentioned technical purpose, technical solution of the present invention provides a kind of contactless angle feedback direct current air door and holds Row device, comprising: direct current generator, PCB circuit board, encoder magnet, hall sensing chip, one end setting of the PCB circuit board One through-hole, two the first conductive terminals and three the second conductive terminals, there are two for the other end setting of the PCB circuit board Three conductive terminals and three the 4th conductive terminals；Two first conductive terminals pass through the conductor wire in the PCB circuit board Road corresponds and is electrically connected with two third conductive terminals；Three second conductive terminals pass through the PCB circuit board Interior conducting wire one-to-one correspondence is electrically connected with three the 4th conductive terminals；The direct current generator includes electric machine casing and electricity Machine rotor, the rotor, which rotates coaxially, is built in the electric machine casing, and the head end of the rotor, tail end are worn respectively The head end of the electric machine casing, tail end out；There are two power supply terminals for the tail end setting of the electric machine casing, and described in two Power supply terminal one-to-one correspondence is electrically connected with two first conductive terminals；The tail end of the rotor passes through described logical Encoder magnet described in Kong Houyu is fixedly and coaxially connected；The hall sensing chip is fixed in the PCB circuit board, and opposite The encoder magnet arrangement, signal transmission end that there are three the hall sensing chip tools, three of the hall sensing chip Signal transmission end one-to-one correspondence is electrically connected with three second conductive terminals.

Compared with prior art, the beneficial effect comprise that the contactless angle feeds back direct current air door executer Utilize the existing slide potentiometer angular transducer of the pulser technical substitution of existing magnetic rotary encoder, apparatus structure letter List, terminal applies suitability are strong, easily creation electric motor of automobile actuator product platform, intelligent device are fitted, due to magnetic rotation volume The noncontact measurement of code device avoids mechanical friction, and the signal of output is number of pulses signal, is had than original analog voltage The more stable transmission advantage of signal, also, with the raising of electronic component and chip fabrication techniques, magnetic rotation angular encoder system Cause this and price lower and lower, which feeds back the encoder magnet and hall sensing in direct current air door executer The material cost of chip only has the 2/3 of original slide potentiometer, since contactless angle feedback direct current air door executer is raw Production batch is huge, can be a large amount of for factory's saving in the case of every product reduces by 1/3 using the material cost of sensor Production capital.

Detailed description of the invention

Fig. 1 is the first view stereo structural schematic diagram of the invention.

Fig. 2 is the overlooking structure diagram of Fig. 1.

Fig. 3 is the second view stereo structural schematic diagram of the invention.

Fig. 4 is third view stereo structural schematic diagram of the invention.

Fig. 5 is the step-by-step counting schematic illustration of hall sensing chip in the present invention.

In Fig. 5: 41- reverse-voltage protection diode, 42- power module, the first Zener diode of 43-, the second Zener of 44- Diode, 45- number of pulses output end, 46- Hall voltage generator, 47- dynamic deflection cancellation module, 48- feedback module, The first difference amplifier of 49-, the second difference amplifier of 4b-, 4c- low-pass filter, 4d- Schmidt trigger, 4e- sample mould Block, 4f- control module, 4g- overcurrent limit module.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.

Fig. 1~5 are please referred to, the present embodiment provides a kind of contactless angles to feed back direct current air door executer, comprising: direct current Motor 1, PCB circuit board 2, encoder magnet 3, hall sensing chip 4, P I N needle 5, Plug pin patch bay 6.

A through-hole, two the first conductive terminal 2a and three the second conductive terminals are arranged in one end of the PCB circuit board 2 2b, there are two third conductive terminal 2c and three the 4th conductive terminal 2d for the other end setting of the PCB circuit board 2；Two institutes The first conductive terminal 2a is stated to correspond and two third conductive terminals by the conducting wire in the PCB circuit board 2 2c electrical connection；Three the second conductive terminal 2b are corresponded and three institutes by the conducting wire in the PCB circuit board 2 State the 4th conductive terminal 2d electrical connection.

The direct current generator 1 includes electric machine casing 11 and rotor 12, and the rotor 12, which rotates coaxially, to be built in The electric machine casing 11, and the head end of the rotor 12, tail end are pierced by head end, the tail end of the electric machine casing 11 respectively； There are two power supply terminal 11a for the tail end setting of the electric machine casing 11, and two power supply terminal 11a mono- are a pair of It should be electrically connected with two the first conductive terminal 2a；In the present embodiment, two power supply terminal 11a are sheet, Two power supply terminal 11a one-to-one correspondence are plugged in two the first conductive terminal 2a, and are welded and fixed with it；Institute The tail end for stating rotor 12 is fixedly and coaxially connected after the through-hole with the encoder magnet 3.

The hall sensing chip 4 is fixed in the PCB circuit board 2, and the relatively described encoder magnet 3 is arranged, institute The tool of hall sensing chip 4 is stated there are three signal transmission end 4a, three signal transmission end 4a mono- of the hall sensing chip 4 are a pair of Ying Yusan the second conductive terminal 2b electrical connections, specifically, three signal transmission end of the hall sensing chip 4 4a one-to-one correspondence is positioned opposite with three the second conductive terminal 2b, and is welded and fixed with it.

The encoder magnet 3 includes installation sheet and pole pair, and the installation sheet is circle, the installation sheet and the electricity The tail end of machine rotor 12 is fixedly and coaxially connected；The pole pair is multipair, circumferential direction of the multipair pole pair along the installation sheet It being evenly arranged, in the present embodiment, the head end of the rotor 12 and the input shaft of gear train (not shown) are sequentially connected, To ensure the gear train output angle precision, the reduction of speed ratio of general gear train is 500, is calculated with 500, the direct current generator 1 It rotates a circle, gear train output shaft rotates 360/500=0.72 °, and the magnetic pole is 4 clock synchronizations, and the hall sensing chip 4 identifies Gear train output shaft rotates angular resolution are as follows: 0.72 °/(4*2)=0.09 °.

Two PI N needles 5 are plugged and fixed respectively in two third conductive terminals corresponding in the PCB circuit board 2 The position of 2c, PI N needle 5 described in the other three is plugged and fixed respectively leads in corresponding three the described 4th in the PCB circuit board 2 The position of electric terminal 2d；In the present embodiment, two third conductive terminal 2c and three the 4th conductive terminal 2d are all provided with It is placed on same straight line；The Plug pin patch bay 6 is bar shaped, and the Plug pin patch bay 6 is fixedly connected with the PCB circuit board 2, and institute Plug pin patch bay 6 is stated to cover and two third conductive terminal 2c and three the 4th conductive terminal 2d；Five PI N needles 5 Equal one end, which plugs, is fixed on the Plug pin patch bay 6, and pass through after the Plug pin patch bay 6 with the third conductive terminal 2c or described the Four conductive terminal 2d electrical connection；The Plug pin patch bay 6 improves the stability that the PI N needle 5 is connect with the PCB circuit board 2.

Working principle: the contactless angle feeds back the pulse that direct current air door executer utilizes existing magnetic rotary encoder The existing slide potentiometer angular transducer of device technical substitution, the apparatus structure is simple, terminal applies suitability is strong, fits easily creation Electric motor of automobile actuator product platform, intelligent device avoid machine due to the noncontact measurement of magnetic rotary encoder Tool friction, the signal of output are number of pulses signal, there is a transmission advantage more more stable than original analog voltage signal, also, with The raising of electronic component and chip fabrication techniques, magnetic rotation angular encoder manufacturing cost and price are lower and lower, this is non-to connect The material cost of encoder magnet 3 and hall sensing chip 4 in touch angle feed-back direct current air door executer is only original sliding The 2/3 of electrokinetic potential device is used since contactless angle feedback direct current air door executer production batch is huge in every product In the case of the material cost of sensor reduces by 1/3, a large amount of production capital can be saved for factory；The contactless angle is anti- Direct current air door executer is presented compared with existing stepper motor air door executer, there is superior performance, the direct current It is good that machine 1 is responded than the mechanical dynamic of stepper motor, has the efficiency ratio higher than stepper motor 40%；Driving method determines stepping Motor needs higher hardware cost, controls complex software；Stepper motor air door executer non-angular exports feedback signal, and category is opened Ring control, such as operates step-out, and automobile ECU can not know that there are systems to control risk.

The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention It protects in range.

Claims

1. a non-contact angle feedback direct current damper actuator, is characterized in that, comprises: direct current motor, PCB circuit board, encoder magnet, Hall induction chip, one end of described PCB circuit board is provided with a through hole, two a first conductive terminal and three second conductive terminals, the other end of the PCB circuit board is provided with two third conductive terminals and three fourth conductive terminals; the two first conductive terminals pass through the PCB circuit board The inner conductive lines are electrically connected to the two third conductive terminals in a one-to-one correspondence; the three second conductive terminals are electrically connected to the three fourth conductive terminals in a one-to-one correspondence through the conductive lines in the PCB circuit board. The DC motor includes a motor housing and a motor rotor, the motor rotor is coaxially rotated and built into the motor housing, and the head end and the tail end of the motor rotor respectively pass through the motor housing The head end and the tail end of the body; the tail end of the motor casing is provided with two power supply terminals, and the two power supply terminals are electrically connected to the two first conductive terminals in a one-to-one correspondence; the The tail end of the motor rotor passes through the through hole and is coaxially and fixedly connected to the encoder magnet; the Hall induction chip is fixed on the PCB circuit board and is arranged relative to the encoder magnet, and the Hall induction chip is The Hall induction chip has three signal transmission ends, and the three signal transmission ends of the Hall induction chip are electrically connected to the three second conductive terminals in a one-to-one correspondence.

2 . The non-contact angle feedback DC damper actuator according to claim 1 , wherein the two power supply terminals are both sheet-shaped, and the two power supply terminals are inserted into two The first conductive terminal is welded and fixed therewith.

3 . The non-contact angle feedback DC damper actuator according to claim 1 , wherein the three signal transmission ends of the Hall sensor chip are in a one-to-one correspondence with the three second conductive terminals. 4 . arranged and fixed by welding.

4 . The non-contact angle feedback DC damper actuator according to claim 1 , wherein the encoder magnet comprises a mounting piece and a magnetic pole pair, the mounting piece is circular, and the mounting piece and the The tail end of the motor rotor is coaxially and fixedly connected; the magnetic pole pairs are multiple pairs, and the multiple pairs of the magnetic pole pairs are evenly arranged along the circumferential direction of the mounting piece.

5. The non-contact angle feedback DC damper actuator according to claim 1, wherein the non-contact angle feedback DC damper actuator further comprises five PIN pins, wherein two of the PIN pins The pins are respectively plugged and fixed on the PCB circuit board at positions corresponding to the two third conductive terminals, and the other three PIN pins are respectively plugged and fixed on the PCB circuit board corresponding to three of the fourth conductive terminals. The location of the conductive terminals.

6 . The non-contact angle feedback DC damper actuator according to claim 5 , wherein the two third conductive terminals and the three fourth conductive terminals are all arranged on the same straight line; the The non-contact angle feedback DC damper actuator also includes a pin seat, the pin seat is strip-shaped, the pin seat is fixedly connected with the PCB circuit board, and the pin seat is pressed against the two one of the third conductive terminals and three of the fourth conductive terminals; all five of the PIN pins are inserted and fixed to the pin socket at one end, and pass through the pin socket to communicate with the third pin socket The conductive terminal or the fourth conductive terminal is electrically connected.