CN103790465A - Car window anti-pinch system based on ARM - Google Patents

Car window anti-pinch system based on ARM Download PDF

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Publication number
CN103790465A
CN103790465A CN201410061618.9A CN201410061618A CN103790465A CN 103790465 A CN103790465 A CN 103790465A CN 201410061618 A CN201410061618 A CN 201410061618A CN 103790465 A CN103790465 A CN 103790465A
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CN
China
Prior art keywords
arm
car window
pinch
car
arm processor
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CN201410061618.9A
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Chinese (zh)
Inventor
赵剑毅
谢宝莲
曹健才
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赵剑毅
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Application filed by 赵剑毅 filed Critical 赵剑毅
Priority to CN201410061618.9A priority Critical patent/CN103790465A/en
Publication of CN103790465A publication Critical patent/CN103790465A/en

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Abstract

The invention discloses a car window anti-pinch system based on an ARM. An ARM microprocessor which is small in size, low in energy consumption and cost, high in performance, flexible and simple in address finding method and high in executing efficiency is introduced into the car window anti-pinch system, and the ARM microprocessor serves as the control center of the anti-pinch system. The control center solves the problem that a car window cannot be braked and then descend in time after the car window clamps a barrier and the problems that shaking is too large and noise is high in the process of ascending and descending of the car window anti-pinch system by controlling the coordinated work among an optoelectronic isolation chip, a current sensor, an ARM processor, a power module, a memorizer, a driving module and a motor. The car window anti-pinch system has the advantages of being simple in structure, safe and reliable.

Description

A kind of car car window anti-clipping system based on ARM

Technical field

The present invention relates to control system of automobile windows, especially anti-pinching car window control system.

Background technology

Socioeconomic development has promoted the fast development of auto industry, and the raising that the use of electronic control system is automotive performance is laid a good foundation, and the lifting of automobile window glass is developed into the electronic control of today from the crank handle operation in past.At present, about the matching way of pinch resistant functionality parameter, according to principle difference, can be divided into two kinds: a kind of is based on Hall element, mainly by hand dipping distance, another kind is based on current detecting, is mainly to be gathered electric current or taked distinct program to realize the collection to electric current according to particular hardware by hand dipping.The realization of electronic control has alleviated driver and crew's labour intensity greatly, also for the safety of driving process provides guarantee, but existing electronic control lifting window is jammed because there is obstruction suddenly in lifting process sometimes, particularly driver and crew's hand, first-class, has brought hidden danger to driver and crew's safety.In order to solve problem above, have now technician that SCM system is introduced in vehicle window clipping prevention system, but the work of single-chip microcomputer is not very stable yet, noise is also larger.

Some open source literatures about vehicle window clipping prevention system as follows:

1, [title] Intelligent vehicle window anti-clamping device, [application number] CN201020178548.2[publication number] patent documentation of CN201695848U discloses a kind of Intelligent vehicle window anti-clamping device, this device comprises: vehicle window, it is characterized in that: microcontroller is housed in vehicle window, and described microcontroller, the first relay, the second relay and power supply are linked to be a circuit by wire; The 1st, 3 pin of described the first relay J 1, the 1st, 3 pin of the second relay J 2 are connected with the positive pole of power supply respectively; The 4th pin of described the first relay J 1, the 4th pin of the second relay J 2 are connected with the motor M bipod of each vehicle window respectively; The 5th pin of described the first relay J 1 and the 1st pin of microcontroller are connected, and the 5th pin of the second relay J 2 and the 3rd pin of microcontroller are connected; The 2nd pin of described the first relay J 1 and the 2nd pin of the second relay J 2 meet at A point, are then connected with the 2nd pin of microcontroller; The negative pole of described power supply is connected with A point by wire.

2, [title] a kind of power window clamp prevention sensor, [patent No.] CN201220023284.2, the patent documentation of [publication number] CN202417144U discloses a kind of power window clamp prevention sensor, it is characterized in that: be included on glass for vehicle window, along surface, at least two electric capacity and sensor detection circuit be set, the electric capacity that is wherein positioned at topmost forms main Detection capacitance C1, the electric capacity that is positioned at bottom forms auxiliary detection capacitor C 2, whether described main Detection capacitance C1 and described auxiliary detection capacitor C 2 have the limbs of human body near to or in contact with the upper edge of glass for vehicle window as sensing element with measurement, described main Detection capacitance C1 and described auxiliary detection capacitor C 2 are because the electric capacitance change signal that human body proximity produces is transferred to described sensor detection circuit, described sensor detection circuit produces according to the variable signal of the described main Detection capacitance detecting and described auxiliary detection electric capacity the control signal of controlling electric power window lifting motor action.

3, [title] a kind of power window clamp prevention sensor and method, [application number] CN201210015662.7, the patent documentation of [publication number] CN103174355A discloses a kind of power window clamp prevention sensor and method, it is characterized in that: be included on glass for vehicle window, along surface, at least two electric capacity and sensor detection circuit be set, the electric capacity that is wherein positioned at topmost forms main Detection capacitance C1, the electric capacity that is positioned at bottom forms auxiliary detection capacitor C 2, whether described main Detection capacitance C1 and described auxiliary detection capacitor C 2 have the limbs of human body near to or in contact with the upper edge of glass for vehicle window as sensing element with measurement, described main Detection capacitance C1 and described auxiliary detection capacitor C 2 are because the electric capacitance change signal that human body proximity produces is transferred to described sensor detection circuit, described sensor detection circuit produces according to the variable signal of the described main Detection capacitance detecting and described auxiliary detection electric capacity the control signal of controlling electric power window lifting motor action.

4, [title] a kind of vehicle window clipping prevention system based on LIN bus, [patent No.] CN200710195895.9, the patent documentation of [publication number] CN101182748 discloses a kind of vehicle window clipping prevention system based on LIN bus, this system couples together a LIN network of composition by LIN bus car body control module and anti-pinch module, car body control module is the host node of LIN network, anti-pinch module be LIN network from node, when car body control module receives after switch input signal, car body control module sends control command by LIN bus cycles property to anti-pinch module, anti-pinch module receives to be controlled motor after control command and turns round, and periodically send vehicle window motion state by LIN bus to car body control module, vehicle window position signalling.

Above four patent documentations have all been described the improvement to car car window anti-clipping system from different angles, thereby realize different object, reach certain Expected Results, but these car car window anti-clipping systems are because only use theory of mechanics or general controller to control vehicle window, cause to run into vehicle window and clamp in the situation of obstruction and can not make in time vehicle window braking then decline.Listed above to car car window anti-clipping system do not solve vehicle window yet and in lifting process, shake too large problem, noise is still larger.

Summary of the invention

The invention discloses a kind of car car window anti-clipping system based on ARM, solving vehicle window can not make in time vehicle window braking then decline in the situation that occurring clamping obstruction, and car car window anti-clipping system in lifting process, shake too large, the problem that noise ratio is larger.

The car car window anti-clipping system that the present invention is based on ARM comprises photoelectric isolated chip, current sensor, arm processor, power module, memory, driver module and motor, adopt the control centre of arm processor as whole system, control the work of all modules; Photoelectric isolated chip, current sensor, arm processor, memory, common same power supply, the i.e. power module of using of five modules of driver module; Between arm processor and memory, the pattern of transfer of data is full-duplex mode; The output of current sensor and photoelectric isolated chip need not directly be received through A/D converter the input of arm processor; The output of arm processor connects driver module; Driver module is connected with motor.

The model of described control centre arm processor is STM32F103, and what driver module used is L298N direct current generator driver module.

The car car window anti-clipping system that the present invention is based on ARM is introduced car car window anti-clipping system little volume, low-power consumption, low cost, high-performance, the addressing system ARM microprocessor that simple, execution efficiency is high flexibly, allows the micro-control centre that is treated as anti-clipping system of ARM.Control centre is by controlling the work of coordinating between photoelectric isolated chip, current sensor, arm processor, power module, memory, driver module, motor, solve the problem that vehicle window can not make in time vehicle window braking then decline in the situation that occurring clamping obstruction, also solved car car window anti-clipping system shakes too large simultaneously in lifting process, the problem that noise ratio is larger, there is advantage simple in structure, safe and reliable.

Accompanying drawing explanation

Fig. 1 is structure principle chart of the present invention.Wherein: 1-photoelectric isolated chip, 2-current sensor, 3-arm processor, 4-power module, 5-memory, 6-driver module, 7-motor.

The specific embodiment

The invention will be further described with reference to the accompanying drawings and in conjunction with the specific embodiment below.

As shown in Figure 1, adopt the control centre of arm processor 3 as whole system, control the work of all modules; Photoelectric isolated chip 1, current sensor 2, arm processor 3, memory 5, common same power supply, the i.e. power module 4 of using of 6 five modules of driver module; Between arm processor 3 and memory 5, the pattern of transfer of data is full-duplex mode; The output of current sensor and photoelectric isolated chip 1 need not directly be received through A/D converter the input of arm processor 3; The output of arm processor 3 connects driver module 6; Driver module 6 is connected with motor 7.Car car window glass is in automatic-ascending process, described arm processor 3 is controlled described driver module 6 drive motors 7 main storys, current sensor 2 detects the electric current of described motor 7, and the result detecting is sent back to arm processor 3, current value after arm processor 3 is processed the real-time current signal receiving and when motor 7 stablizes compares, judge whether difference is greater than certain certain value and judged result is stored in memory 5, meanwhile whether photoelectric isolated chip 1 is blocked and is detected, and send detection signal to arm processor 3 and process.When result is, when light is kept off and difference is above greater than certain certain value, to illustrate that there is obstruction at vehicle window place, now, described arm processor 3 will be controlled driver module 6 drive motors 7 and reverse.Motor 7 reverses, and automobile window glass declines at once.

That driver module 6 uses is L298N.L298N is that a kind of high voltage, the large-current electric machine that ST company produces drives chip.This chip adopts 15 pin encapsulation.Main feature is: operating voltage is high, and maximum operating voltage can reach 46V; Output current is large, and instantaneous peak current can reach 3A, and continuous firing electric current is 2A; Rated power 25W.The high-voltage large current full-bridge type driver that includes two H bridges, can be used for driving the inductive load such as dc motor and stepping motor, relay coil; Adopt the control of standard logic level signal; There are two and enable control end, in the situation that not affected by input signal, allow or forbid that device work has a logic power input, works internal logic circuit part under low-voltage; Can external detection resistance, variable quantity is fed back to control circuit.Use L298N chip drives motor, can drive a two-phase stepping motor or four phase step motor, also can drive two direct current generators

It is STM32F103 series that ARM microprocessor uses.STM32F103 series has the RISC kernel of 32 of high performance ARM Cortex-M3, and operating frequency is 72MHz, built-in high-speed memory.There are abundant enhancing I/O port and the peripheral hardware that is connected to two APB buses.The device of all models all comprises the ADC of 2 12,3 general 16 bit timing devices and a PWM timer, also comprises standard and advanced communication interface: reach 2 I2C and SPI, 3 USART, USB and a CAN.The temperature range of STM32F103 enhancement mode series A RM microprocessor work in-40 ° of C to+105 ° of C, supply voltage 2.0V to 3.6V, a series of battery saving mode guarantees the requirement of low-power consumption application.Complete STM32F103 enhanced arm microprocessor series of products comprise five kinds of different packing forms from 36 pin to 100 pin; According to different packing forms, the peripheral configuration in device is not quite similar.

Claims (3)

1. the car car window anti-clipping system based on ARM, comprise photoelectric isolated chip (1), current sensor (2), arm processor (3), power module (4), memory (5), driver module (6) and motor (7), it is characterized in that: adopt the control centre of arm processor (3) as whole system, control the work of all modules; Photoelectric isolated chip (1), current sensor (2), arm processor (3), memory (5), common same power supply, the i.e. power module (4) of using of (6) five modules of driver module; Between arm processor (3) and memory (5), the pattern of transfer of data is full-duplex mode; The output of current sensor (2) and photoelectric isolated chip (1) need not directly be received the input of arm processor (3) through A/D converter; The output of arm processor (3) connects driver module (6); Driver module (6) is connected with motor (7).
2. according to the car car window anti-clipping system based on ARM described in claim 1, it is characterized in that: the model of control centre's arm processor (3) is STM32F103.
3. according to the car car window anti-clipping system based on ARM described in claim 1, it is characterized in that: what driver module (6) used is L298N direct current generator driver module.
CN201410061618.9A 2014-02-24 2014-02-24 Car window anti-pinch system based on ARM CN103790465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410061618.9A CN103790465A (en) 2014-02-24 2014-02-24 Car window anti-pinch system based on ARM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410061618.9A CN103790465A (en) 2014-02-24 2014-02-24 Car window anti-pinch system based on ARM

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CN103790465A true CN103790465A (en) 2014-05-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201262010Y (en) * 2008-07-29 2009-06-24 湖南工程学院 Intelligent window control device
CN203022507U (en) * 2012-12-29 2013-06-26 长安大学 Singlechip-based power window anti-pinch device of automobile
CN203066732U (en) * 2012-12-28 2013-07-17 长春博泽汽车部件有限公司 Automobile window pivoting machine anti-clamping controller
CN203188776U (en) * 2013-02-18 2013-09-11 刘瑞 Automatic door control device
CN203978127U (en) * 2014-02-24 2014-12-03 赵剑毅 A kind of car car window anti-clipping system based on ARM

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201262010Y (en) * 2008-07-29 2009-06-24 湖南工程学院 Intelligent window control device
CN203066732U (en) * 2012-12-28 2013-07-17 长春博泽汽车部件有限公司 Automobile window pivoting machine anti-clamping controller
CN203022507U (en) * 2012-12-29 2013-06-26 长安大学 Singlechip-based power window anti-pinch device of automobile
CN203188776U (en) * 2013-02-18 2013-09-11 刘瑞 Automatic door control device
CN203978127U (en) * 2014-02-24 2014-12-03 赵剑毅 A kind of car car window anti-clipping system based on ARM

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