CN111998064B

CN111998064B - Manual-automatic gear shifter based on Hall induction

Info

Publication number: CN111998064B
Application number: CN202010676445.7A
Authority: CN
Inventors: 钱高法; 胡万训; 邓据洋; 陈江辉
Original assignee: Ningbo Gaofa Automotive Control System Co ltd
Current assignee: Ningbo Gaofa Automotive Control System Co ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-11-23
Anticipated expiration: 2040-07-14
Also published as: CN111998064A

Abstract

The invention discloses a manual-automatic integrated gear shifter based on Hall induction, relates to the field of gear shifter control, and mainly comprises a gear lever, a gear switching detection module, a manual-automatic switching detection module and a main control module. According to the gear shifting device, Hall angle induction currents with different sizes are generated through the Hall sensors according to the change of the magnetic flux of the Hall sensors caused by the angle change of the gear shifting rod during gear shifting, and the gears to be shifted are identified according to the sizes of the induction currents, so that the gear shifting identification of the single Hall sensor is realized, the structure of the gear shifting device is simplified, and the interference among the Hall sensors is avoided; and when manual automatic switch, through the displacement of pin, change hall switch's conducting state to realize the switching of manual automatic mode, simultaneously, utilize hall switch, also can not have the condition of disturbing hall sensor when switching manual automation, avoided the mistake of keeping off the position and transfer.

Description

Manual-automatic gear shifter based on Hall induction

Technical Field

The invention relates to the field of control of gear shifters, in particular to a manual-automatic integrated gear shifter based on Hall induction.

Background

The automobile gear shifter is a necessary component of a modern automobile, and the gear shifter is matched with a gearbox to finish the matching of the rotating speed of an automobile engine and the rotating speed of wheels through the action of hands, so that the automobile can give consideration to both large torque in low-speed running and high speed in high-speed running. With the change of social requirements, the gear shifter itself is gradually developed from the original manual gear to the current manual-automatic gear, and the gear shifting form is also from a simple mechanical operator cable to the current electronic gear shifting form. However, the existing electronic gear shifting device, such as a gear shifter based on hall sensing, often needs to use complex electronic detection equipment, has a complex overall structure, and causes a large overall occupied area of a gearbox, and meanwhile, hall sensors are easy to interfere with each other, so that signal interference is caused.

In the prior art, as disclosed in chinese patent publication No. CN103363088A, a dual hall sensor type DCT shifter operating mechanism is disclosed, which realizes shifting by fixing a dual hall sensor on a circuit board of each shift to sense the shift change. This application also utilizes the hall response to shift, all sets up a two hall detection passageway when keeping off a position department at each, makes selector overall structure complicated undoubtedly, and occupation space is too big simultaneously, also can't avoid the interference between a hall sensor simultaneously.

Also, as disclosed in chinese patent publication No. CN105383413A, a circuit applied to an AMT shifter for solving hall interference of non-contact switches is disclosed, which solves the problem of mutual interference between hall elements by using independent hall modules installed in each shift stage, but inevitably complicates the overall structure of the shifter.

Disclosure of Invention

In order to solve the problems and enable the Hall-induction-based gear shifter to optimize the overall structure of the Hall-induction-based gear shifter under the condition that induction signals are not interfered with each other, the invention provides a Hall-induction-based manual-automatic integrated gear shifter, which comprises a gear shifting rod, a gear switching detection module, a manual-automatic switching detection module and a main control module, wherein:

the gear shifting rod is used for shifting the manual gear and the automatic gear according to the switching of the gear shifting rod stations and shifting the gears according to the forward and backward rotation of the gear shifting rod;

the manual-automatic switching detection module is used for generating a first Hall switch signal to control the gearbox to enter a manual gear mode when the gear shifting lever is switched to a first station, and generating a second Hall switch signal to control the gearbox to enter an automatic gear mode when the gear shifting lever is switched to a second station;

the gear switching detection module is used for generating Hall angle induction current according to the change of magnetic flux on the Hall detection chip when the gear lever rotates forwards and backwards, and calculating an angle induction signal of the gear lever;

the main control module is used for generating a gear shifting request signal according to the gear shifting lever angle sensing signal and uploading the gear shifting request signal to the CAN bus;

the external actuator switches the gear of the gearbox after receiving the gear shifting request signal on the CAN bus, and feeds back a real-time gear signal through the CAN bus;

and the main control module is also used for sending a gear lamp control signal through LIN communication after receiving the real-time gear signal.

Further, the main control module comprises a second main control chip containing first to sixty-fourth pins; the gear switching detection module comprises a third Hall detection chip and a second Hall detection chip, wherein the third Hall detection chip comprises a first pin, a second pin, a third pin and a sixteenth pin; the manual-automatic switching detection module comprises a tenth Hall switch and an eleventh Hall switch.

Further, still include the power management module, be used for providing operating power for each module, include first low dropout regulator, contain first to fifteenth pins, wherein:

the first pin is grounded through the first capacitor and the second capacitor at the same time and is connected with external power supply voltage through a thirteenth inductor; the fifth pin is grounded through a fifth resistor; the sixth pin is grounded through a twelfth capacitor; the fourteenth pin is grounded through a sixth resistor; the second pin is connected with the seventh pin through a second resistor; the twelfth pin is connected with the seventh pin through a fourth resistor and is connected with a thirty-fifth pin of the second main control chip; the tenth pin is connected with a thirty-sixth pin of the second main control chip; the ninth pin is connected with a forty-eighth pin of the second main control chip; the fourth pin and the fifteenth pin are grounded in parallel;

the seventh pin is grounded through a third capacitor, a fourth capacitor and a fifty-ninth capacitor at the same time and serves as a second working power supply output end, the seventh pin is also connected with one end of a third resistor and a fifty-seventh capacitor which are connected in parallel through a first resistor, the one end of the third resistor and the one end of the fifty-seventh capacitor which are connected in parallel are connected with a twenty-third pin of the second main control chip to provide reference voltage for the second main control chip, and the other end of the third resistor and the one end of the fifty-ninth capacitor which are connected in parallel are grounded;

and a forty-second pin and a fifty-eighth pin of the second main control chip are connected in parallel, the parallel ends are grounded through a thirteenth capacitor, a twenty-ninth capacitor and a fifty-eighth capacitor respectively, and the parallel ends are also used as the output end of the first working power supply.

Further, in the gear shift detection module:

the first pin and the ninth pin of the third Hall detection chip are grounded through a tenth capacitor and a fifteenth capacitor respectively; the second pin and the thirteenth pin are grounded in parallel, and the fifth pin and the tenth pin are grounded in parallel; a third pin and an eleventh pin of the power supply are respectively connected to a second working power supply and are respectively grounded through a ninth capacitor and a fourteenth capacitor;

a fourth pin and a twelfth pin of the third Hall detection chip are respectively connected with a forty-fourth pin of the second main control chip in parallel through a seventh resistor and a tenth resistor; the eighth pin and the sixteenth pin of the first main control chip are connected with the forty-fifth pin of the second main control chip in parallel; the sixth pin and the fourteenth pin of the second main control chip are connected with the forty-sixth pin of the second main control chip in parallel; a seventh pin of the second main control chip is connected with a fifty-second pin of the second main control chip, and a fifteenth pin of the second main control chip is connected with a forty-seventh pin of the second main control chip; and a forty-seventh pin and a fifty-second pin of the second main control chip are respectively connected in parallel to the first working power supply through a ninth resistor and an eighth resistor.

Further, in the manual-automatic switching detection module:

the input end of the tenth Hall switch is connected with a second working power supply and is grounded through a fifteenth capacitor; the output end of the voltage regulator is simultaneously connected with one end of a forty-sixth capacitor, one end of a thirty-ninth resistor and one end of a forty-first resistor, the other end of the forty-sixth capacitor is grounded, the other end of the thirty-ninth resistor is connected with the input end of a tenth Hall switch, and the other end of the forty-first resistor is connected with an eleventh pin of the second main control chip;

the input end of the eleventh Hall switch is connected with a second working power supply and is grounded through a seventeenth capacitor; the output end of the voltage regulator is connected with one end of a forty-eighth capacitor, one end of a forty-second resistor and one end of a forty-eighth capacitor, the other end of the forty-eighth capacitor is grounded, the other end of the forty-fourth resistor is connected with the input end of the eleventh Hall switch, and the other end of the forty-second resistor is connected with the twelfth pin of the second main control chip.

Further, still include LIN communication connector, CAN communication connector, the gear level top still includes the handball of shifting simultaneously, contains in the handball from accuse module, backlight and fender position lamp, wherein:

the LIN communication connector comprises first to eighth interfaces and is used for LIN communication connection in the gear shifter;

the CAN communication connector comprises first to twelfth interfaces and is in communication connection with a CAN in the gear shifter;

the slave control module comprises a fourth slave control chip, a first pin, a second pin, a third pin, a fourth pin and a fourth pin, wherein the fourth slave control chip comprises the first pin, the second pin and the eighth pin and is used for starting a corresponding gear lamp on the gear shifting handball according to a gear lamp control signal and feeding back a backlight lamp signal through LIN communication;

the backlight lamp is used for providing backlight for the gear lamp.

Further, still include gear lamp regulating circuit, be used for according to backlight signal, adjust the luminance of gear lamp, include:

the backlight signal input end is simultaneously connected with a third interface of the LIN communication connector and the cathode of the fourth diode and is grounded through a twenty-first capacitor; the anode of the fourth diode is grounded through a twenty-second capacitor and is simultaneously connected with the base of the fifth common base amplifier, the emitter of the fourth diode is grounded, the collector of the fourth diode is connected with a second working power supply through a twenty-third resistor, and the collector of the fourth diode is simultaneously connected with the base of the third common base amplifier; the emitter of the third common base amplifier is grounded, the collector of the third common base amplifier is simultaneously connected with a twentieth resistor and the base of the first triode through a twenty-first resistor, and the other end of the twentieth resistor is connected with an external power supply voltage and the emitter of the first triode; the emitter of the first triode is connected with the collector of the first triode through a twenty-second resistor, and the collector of the first triode is connected with one end of a thirty-fourth resistor; the other end of the thirty-fourth resistor is simultaneously connected with one ends of an eleventh bidirectional voltage stabilizing diode and a forty-fourth capacitor and connected with a second interface of the LIN communication connector, and the other ends of the eleventh bidirectional voltage stabilizing diode and the forty-fourth capacitor are grounded.

Further, still include gear shift lever power control circuit for providing power for the gear shift lever, include:

the external power supply voltage input end is connected with an external power supply voltage, is grounded through a twenty-fourth capacitor, and is connected with a twenty-seventh capacitor and a second patch capacitor which are connected in parallel through a third inductor; the external power supply voltage input end is also connected with a thirty-third resistor, the anode of the first voltage stabilizing diode and the source electrode of the sixth field effect transistor through a third inductor, the other end of the thirty-third resistor, the cathode of the first voltage stabilizing diode and the grid electrode of the sixth field effect transistor are connected in parallel, one end of the parallel connection is connected with a thirty-second resistor and a thirty-fifth capacitor simultaneously, the other end of the thirty-fifth capacitor is grounded, and the other end of the thirty-second resistor is connected with the collector electrode of the eighth common base amplifier; the emitter of the eighth common base amplifier is grounded, and the base is connected with the thirty-fourth pin of the second main control chip;

the drain electrode of the sixth field effect transistor is simultaneously connected with a twenty-seventh resistor, a twenty-ninth resistor and a thirty-first resistor; the other end of the twenty-seventh resistor is connected with a seventh pin of a fourth slave control chip through a first inductor; the other end of the twenty-ninth resistor is simultaneously connected with a twenty-eighth capacitor, a sixth bidirectional voltage stabilizing diode and a fourth inductor, the other ends of the twenty-eighth capacitor and the sixth bidirectional voltage stabilizing diode are grounded, and the other end of the fourth inductor is connected with a fifth interface of the LIN communication connector; the other end of the thirty-first resistor is simultaneously connected with a thirty-seventh resistor, a thirty-sixth capacitor, the anode of the second voltage stabilizing diode and the twenty-second pin of the second main control chip, and the other ends of the thirty-seventh resistor, the thirty-sixth capacitor and the second voltage stabilizing diode are grounded in parallel.

Further, the slave control module comprises:

the LIN communication port is connected with a first interface of an LIN communication connector and simultaneously connected with an eighteenth capacitor, a third bidirectional voltage stabilizing diode and an eighteenth resistor through a second inductor, the other ends of the eighteenth capacitor and the third bidirectional voltage stabilizing diode are grounded, the other end of the eighteenth resistor is simultaneously connected with a twelfth resistor and a sixth pin of a fourth slave control chip, the other end of the twelfth resistor is simultaneously connected with a seventeenth capacitor and a seventh pin of the fourth slave control chip through the first inductor, and the other end of the seventeenth capacitor is simultaneously connected with a ground electrode and a fifth pin of the fourth slave control chip; the third pin of the fourth slave control chip is connected with the seventh pin of the fourth slave control chip through an eleventh resistor and is grounded through a sixteenth capacitor; the first pin, the fourth pin and the second pin of the fourth slave control chip are respectively connected with the forty-ninth pin to the fifty-first pin of the second master control chip, and the first pin of the fourth slave control chip is also connected with the first working power supply through a seventeenth resistor.

Further, still include P and keep off button and P and keep off button detection circuitry to and shift gears UNLOCK button on the handball, wherein:

the P-gear key is used for generating a P-gear switching signal when the P-gear key is pressed under the condition that the UNLOCK key is pressed;

and the P-gear key detection circuit is used for receiving an external P-gear switching signal, and the main control module generates a corresponding gear shifting request signal according to the P-gear switching signal.

Compared with the prior art, the invention at least has the following beneficial effects:

(1) according to the manual-automatic integrated gear shifter based on the Hall sensor, the Hall sensor is used for generating Hall angle induction currents with different sizes according to the change of the angle of the gear shifting lever during gear shifting, and the gear to be shifted is identified according to the size of the induction currents, so that the gear shifting identification of the single Hall sensor is realized;

(2) the gear switching is realized by the detection of Hall angle induced current through a single Hall sensor, and compared with the traditional gear shifter based on Hall sensing, the gear shifter has the advantages that the total amount of the Hall sensor is reduced, the structure of the gear shifter is simplified, and the interference among a plurality of Hall sensors is avoided;

(3) the structure is simple, a plurality of gears share the same Hall sensor, the size of the gear shifter is greatly reduced, and the space in a limited vehicle is saved;

(4) when manual automatic switch-over, through the displacement of gear level, change hall switch's conducting state to realize the switching of manual automatic mode, simultaneously, utilize hall switch, also can not have the condition of disturbing hall sensor when switching manual automation, avoided the mistake of keeping off the position and transfer.

Drawings

FIG. 1 is a schematic block diagram of a Hall-sensing based manual-automatic integrated shifter;

FIG. 2 is a schematic circuit diagram of a power management module;

FIG. 3 is a schematic circuit diagram of a gear shift detection module;

FIG. 4 is a schematic diagram of a tenth Hall switch circuit of the manual-automatic switching detection module;

FIG. 5 is a schematic diagram of an eleventh Hall switch circuit of the manual-automatic switching detection module;

fig. 6 is a schematic view of a LIN communication connector;

FIG. 7 is a schematic view of a CAN communication connector;

FIG. 8 is a circuit schematic of the range lamp adjustment circuit;

FIG. 9 is a circuit schematic of the shift lever power control circuit;

FIG. 10 is a circuit diagram of the slave module and its associated circuitry;

FIG. 11 is a schematic circuit diagram of a P-range key detection circuit;

FIG. 12 is a circuit schematic of a PWM communication circuit;

FIG. 13 is a schematic circuit diagram of a main control module with an attached overcurrent suppression and battery voltage detection circuit;

FIG. 14 is a circuit diagram of an auxiliary wake-up circuit of the main control module;

FIG. 15 is a schematic circuit diagram of the attached CAN communication circuit of the host module;

fig. 16 is a pin diagram of a second main control chip.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

In order to solve the above problems, the present invention provides a manual-automatic integrated gear shifter based on hall sensing, which can optimize the overall structure of the gear shifter based on hall sensing under the condition that the sensing signals are not interfered with each other, as shown in fig. 1, the manual-automatic integrated gear shifter comprises a gear shift lever, a gear switching detection module, a manual-automatic switching detection module and a main control module, wherein:

The main control module comprises a second main control chip (U2) containing first to sixty-fourth pins; the gear switching detection module comprises a third Hall detection chip (U3) which comprises first to sixteenth pins; the manual-automatic switching detection module comprises a tenth (U10) Hall switch and an eleventh (U11) Hall switch.

Further, the power management module is used for providing a working power supply for each module, and includes a first low dropout regulator including first to fifteenth pins, and an external power supply Voltage (VSUP) is input through the first pin of the first low dropout regulator and is output by a seventh pin to supply power to the main control module, the gear switching detection module, and the other modules, as shown in fig. 2, the circuit connection structure of the power management module is as follows:

the seventh pin is grounded through a third capacitor, a fourth capacitor and a fifty-ninth capacitor at the same time and serves as an output end of a second working power supply (5V _ 2), the seventh pin is also connected with one end of a third resistor and a fifty-seventh capacitor which are connected in parallel through a first resistor, the twenty-third pin of the second main control chip is connected with the one end of the first main control chip in parallel to provide reference voltage for the second main control chip, and the other end of the first main control chip in parallel is grounded;

and a forty-second pin and a fifty-eighth pin of the second main control chip are connected in parallel, the parallel ends are grounded through a thirteenth capacitor, a twenty-ninth capacitor and a fifty-eighth capacitor respectively, and meanwhile, the parallel ends are also used as the output end of the first working power supply (5V _ 1).

Consistent with the method of the gear shifting operation of the existing gear shifter, the gear shifting lever in the invention takes the forward direction of a vehicle as a front-back positioning standard, the left-right swing is respectively the switching of a manual gear (a first station) and an automatic gear (a second station), the front-back swing of the manual gear is the addition and subtraction (namely M + and M-) of gears, and the front-back swing direction of the automatic gear is respectively provided with a reverse gear (R), a neutral gear (N), a parking gear (P) and a forward gear (D) from front to back.

The gear switching detection module is used for changing the angle between a third Hall detection chip and the magnetic field direction in the gear switching detection module when the gear shifting rod swings back and forth to shift gears, so that the magnetic flux flowing through the detection chip is changed and corresponding Hall angle induction current is generated, and according to the change of the induction current, the third Hall detection chip calculates the gear shifting angle of the gear shifting rod at the time, so that the gear switching identification of the single Hall sensor is realized. Specifically, as shown in fig. 3, the circuit connection method is as follows:

Through single hall sensor, utilize hall angle induced-current's detection to realize keeping off the switching of position, compare with the tradition selector based on hall response, both reduced hall sensor's total amount, simplified the structure of selector, avoided the interference between a plurality of hall sensor again.

The manual automatic detection module is used for changing the conduction state of the tenth Hall switch when the gear shifting lever swings leftwards and is switched to a manual mode (namely, the gear shifting lever is switched to the first station), so that a Hall switch signal is generated and transmitted to the eleventh pin of the main control module through the second pin, and the manual gear mode of the gearbox is switched; similarly, when the gear shift lever swings right to be switched to the automatic gear mode (namely, to the second station), the eleventh hall switch generates a hall switch signal and outputs the hall switch signal to the twelfth pin of the main control module, so that the automatic gear mode of the gearbox is switched. Specifically, as shown in fig. 4 and 5, the circuit connection manner is as follows:

Further, a LIN communication connector (as shown in fig. 6) and a CAN communication connector (as shown in fig. 7) are included, and a shift knob is further included at the top end of the shift lever, wherein the shift knob contains a slave control module, a backlight and a shift lamp, and the shift knob comprises:

a LIN communication connector (J2) comprising a first to an eighth interface for LIN communication connection in the gear shifter;

a CAN communication connector (J3) comprising first to twelfth interfaces for connecting with CAN communication in the gear shifter;

the slave control module comprises a fourth slave control chip, a first pin, a second pin, a third pin and a fourth pin, wherein the fourth slave control chip comprises the first pin, the second pin and the fourth pin, and is used for starting a corresponding gear lamp on the gear shifting handball according to a gear lamp control signal and feeding back a backlight signal through LIN communication (the signal reflects the brightness of a backlight);

the backlight lamp is used for providing backlight for the gear lamp.

In order to enable a driver to clearly know the current gear at night, the invention further comprises a gear lamp adjusting circuit which is used for adjusting the brightness of the gear lamp according to a backlight signal, so that the gear lamp can adjust the brightness of the gear lamp according to the brightness of a backlight, and the gear lamp can be more obvious under the conditions of high daytime illuminance or night. Specifically, as shown in fig. 8, the circuit connection method is as follows:

the backlight signal input end is simultaneously connected with a third interface of the LIN communication interface and the cathode of the fourth diode and is grounded through a twenty-first capacitor; the anode of the fourth diode is grounded through a twenty-second capacitor and is simultaneously connected with the base of the fifth common base amplifier, the emitter of the fourth diode is grounded, the collector of the fourth diode is connected with a second working power supply through a twenty-third resistor, and the collector of the fourth diode is simultaneously connected with the base of the third common base amplifier; the emitter of the third common base amplifier is grounded, the collector of the third common base amplifier is simultaneously connected with a twentieth resistor and the base of the first triode through a twenty-first resistor, and the other end of the twentieth resistor is connected with an external power supply voltage and the emitter of the first triode; the emitter of the first triode is connected with the collector of the first triode through a twenty-second resistor, and the collector of the first triode is connected with one end of a thirty-fourth resistor; the other end of the thirty-fourth resistor is simultaneously connected with one ends of an eleventh bidirectional voltage stabilizing diode and a forty-fourth capacitor and connected with a second interface of the LIN communication connector, and the other ends of the eleventh bidirectional voltage stabilizing diode and the forty-fourth capacitor are grounded.

Further, the control circuit also comprises a power supply control circuit of the gear shift lever, which is used for providing power supply for each module in the gear shift lever handball, as shown in fig. 9, the circuit connection mode is as follows:

the external power supply voltage input end is connected with an external power supply voltage, is grounded through a twenty-fourth capacitor, and is connected with a twenty-seventh capacitor and a second patch capacitor which are connected in parallel through a third inductor; the external voltage input end is also connected with a thirty-third resistor, the anode of the first voltage stabilizing diode and the source electrode of the sixth field effect transistor through a third inductor, the other end of the thirty-third resistor, the cathode of the first voltage stabilizing diode and the grid electrode of the sixth field effect transistor are connected in parallel, the parallel end is connected with a thirty-second resistor and a thirty-fifth capacitor simultaneously, the other end of the thirty-fifth capacitor is grounded, and the other end of the thirty-second resistor is connected with the collector electrode of the eighth common base amplifier; the emitter of the eighth common base amplifier is grounded, and the base is connected with the thirty-fourth pin of the second main control chip;

The slave control module sends the received gear lamp control signal to an LED lamp group on the gear shifting handball through LIN communication (because an LED lamp circuit belongs to a conventional circuit, a person skilled in the art can obtain the signal according to the prior art, so that the circuit is not described in detail in the embodiment and only limited functionally), so that the corresponding gear lamp is controlled to be turned on according to the current gear, and meanwhile, the slave control module can also feed back a backlight signal to adjust the brightness of the gear lamp according to the brightness of the backlight. Specifically, as shown in fig. 10, the slave control module and its accessory circuits are connected as follows:

the LIN communication port is connected with a first interface of the LIN communication connector and is simultaneously connected with an eighteenth capacitor, a third bidirectional voltage stabilizing diode and an eighteenth resistor through a second inductor, the other ends of the eighteenth capacitor and the third bidirectional voltage stabilizing diode are grounded, the other end of the eighteenth resistor is simultaneously connected with a twelfth resistor and a sixth pin of a fourth slave control chip, the other end of the twelfth resistor is simultaneously connected with a seventeenth capacitor and a seventh pin of the fourth slave control chip through the first inductor, and the other end of the seventeenth capacitor is simultaneously connected with a ground electrode and a fifth pin of the fourth slave control chip; the third pin of the fourth slave control chip is connected with the seventh pin of the fourth slave control chip through an eleventh resistor and is grounded through a sixteenth capacitor; the first pin, the fourth pin and the second pin of the fourth slave control chip are respectively connected with the forty-ninth pin to the fifty-first pin of the second master control chip, and the first pin of the fourth slave control chip is also connected with the first working power supply through a seventeenth resistor.

the P-gear key is used for generating a P-gear switching signal when the UNLOCK key is pressed down (the signal is transmitted to the main control module through LIN communication) and the P-gear key is pressed down;

The UNLOCK key and the P-shift key are general key circuits to generate corresponding key signals (those skilled in the art can implement the generation of key signals by using corresponding prior art according to actual requirements, and therefore, the circuit structure of the key circuit is not described in detail in this embodiment, and only the functions thereof are limited). The P-shift key detection circuit, as shown in fig. 11, includes:

the P-gear switching signal input end receives a P-gear switching signal sent by the P-gear key, and is connected with a thirty-ninth capacitor, a ninth bidirectional voltage stabilizing diode, a thirty-third resistor and a thirty-fifth resistor through a fifth inductor; the other ends of the thirty-ninth capacitor and the ninth bidirectional voltage stabilizing diode are grounded, the other end of the thirty-third resistor is connected with the anode of a fifth diode, the cathode of the fifth diode is connected with a second working power supply, and the other end of the thirty-fifth resistor is simultaneously connected with the anode of the third voltage stabilizing diode, the thirty-eighth capacitor and the fifteenth pin of the second main control chip; and the other ends of the third voltage stabilizing diode and the thirty-eighth capacitor are grounded.

In a preferred embodiment, in order to prevent the situation that the gear cannot be normally switched due to the failure of the CAN communication, a PWM communication circuit is additionally provided to serve as backup communication (a communication mode sent by the main control module in a one-way manner) when the CAN communication fails, at this time, the shifter maintains the gear shifting function, but other functions based on the CAN communication fail (such as a function of feeding back real-time gear information to switch the gear lamp), and the backup communication is only required to maintain safe driving and is triggered by the fact that the CAN bus is continuously closed twice or no main control module gear shifting information message exists on the 10-cycle CAN bus. Specifically, as shown in fig. 12, the circuit connection method is as follows:

a PWM communication signal input terminal, which is connected to a fifty-ninth pin (PWM signal output pin) of the second master control chip to introduce a PWM signal, and is simultaneously connected to a thirty-seventh capacitor, a collector of the ninth triode, and a base of the seventh common-base amplifier, wherein the other end of the thirty-seventh capacitor is grounded to an emitter of the ninth triode, the base of the ninth triode is simultaneously connected to an emitter of the seventh common-base amplifier and is grounded through a thirty-eighteen resistor, the collector of the seventh common-base amplifier is simultaneously connected to a twenty-eighth resistor, a thirty-first capacitor, and an eighth bidirectional zener diode, and the collector of the seventh common-base amplifier is also used as a PWM signal output terminal and is connected to an eleventh interface of the CAN communication connector; the other end of the twenty-eighth resistor is connected with the second working power supply, and the other ends of the thirty-first capacitor and the eighth bidirectional voltage stabilizing diode are grounded.

In conclusion, according to the manual-automatic integrated gear shifter based on the Hall sensor, the magnetic flux of the Hall sensor is changed through the Hall sensor according to the angle change of the gear shifting rod during gear shifting, Hall angle induction currents with different sizes are generated, the gear to be shifted is identified according to the size of the induction currents, and therefore gear shifting identification of the single Hall sensor is achieved.

Simultaneously, through single hall sensor, utilize hall angle induced-current's detection to realize keeping off the switching of position, compare with the tradition selector based on hall response, both reduced hall sensor's total amount, simplified the structure of selector, avoided the interference between a plurality of hall sensor again. Simple structure, a plurality of fender position share same hall sensor, have reduced the volume of selector greatly, have practiced thrift limited car inner space. The manual automatic gear is switched by adopting a Hall switch mode, and the interference to the Hall sensor is further avoided.

Example two

In order to better explain the technical gist of the present invention, the present embodiment analyzes the present invention through a practical operation, as shown in fig. 1 to 12:

when a starting key of an automobile is inserted but an engine is not started, the automobile is powered by an automobile storage battery only, a power supply signal of the automobile storage battery is led in from a KL30 end through an overcurrent suppression and battery voltage detection circuit (as shown in fig. 13, an auxiliary circuit is led out from a first pin of a main control module), the signal is transmitted and input into a first pin (U2.1) of a main control chip through a seventh capacitor, an eleventh capacitor, a first bidirectional voltage stabilizing diode, a first diode, an EC1, a sixth inductor, a fifth capacitor, a sixth capacitor and an eighth capacitor, and meanwhile, a KL30 end is connected with a first interface of a CAN communication connector.

When the engine is started, the main control module is awakened by an awakening circuit (as shown in fig. 14, KL15 PRO is an engine awakening signal, an accessory circuit led out from a twenty-first pin of the main control module and comprising a nineteenth resistor, a sixteenth resistor, a sixty-fifth capacitor and a twenty-first pin input to the second main control chip) and meanwhile an engine power supply signal is led in from a KL15 end of the over-current suppression and battery voltage detection circuit (as shown in fig. 13), the signal is transmitted and input to a first pin of the second main control chip through a fifteenth capacitor, a fifty-sixth capacitor, a second bidirectional voltage stabilizing diode, a second diode, a twelfth pole tube, an EC1, a fifth capacitor, a sixth capacitor and an eighth capacitor, and meanwhile, the KL15 end is connected with a second interface of the CAN communication connector.

At the moment, the vehicle is formally started, after an UNLOCK button on a gear shifting handball at the top end of the gear shifting lever is pressed (which is equivalent to releasing the dead lock of a hand brake), the gear shifting lever is shaken backwards (here, in an automatic gear mode), the angle between a third Hall detection chip in the gear shifting detection module and a magnetic field is changed, so that the magnetic flux change causes the change of Hall angle induction current, the third Hall detection chip calculates the rotation angle of the gear shifting lever corresponding to the current, generates an angle induction signal and transmits the angle induction signal to the main control module. The master control module generates a shift request signal according to the angle sensing signal, and uploads the signal to the CAN bus through the CAN communication circuit (as shown in fig. 15, an auxiliary circuit led out from the twenty-eighth, twenty-ninth and thirty-first pins of the master control module), the twenty-first (× R21), the twenty-third (× R23), the twenty-seventh (× R27) and twenty-eighth (× R28) resistors, the twenty-seventh (× C27), the twenty-fifth (C25), the thirty-fourth (C34) capacitors, and the seventh ESD protector (D7) after processing.

At the moment, after the external actuator receives a gear shifting request signal on the CAN bus, the motor inside the actuator is controlled to operate, the gear of the gearbox is changed to the 1 gear (namely D gear and 1 gear starting), and the gear is switched to a proper gear along with the change of the form speed of the vehicle. Meanwhile, the gearbox transmits the real-time gear signals to the actuator through a hard wire, and the actuator feeds the real-time gear signals back to the main control module through the CAN bus. The master control module generates a gear lamp control signal according to the real-time gear signal, transmits the gear lamp control signal to the slave control module on the gear shifting handball through LIN communication, and the slave control module sends the gear lamp control signal to the LED control chip to light the corresponding gear lamp (the gear lamp is a D gear lamp in the automobile starting and driving stages). Meanwhile, the brightness of the gear lamp is adjusted through the gear lamp adjusting circuit according to the brightness of the gear lamp.

And when the automobile is ready to enter a parking state from a driving state, a P gear key is pressed, when the speed of the automobile is more than 3km/h, the gear shifter sends an N gear request signal to control the gearbox to be switched to an N gear, and sends a P gear request signal to control the gearbox to be switched to a P gear for parking after the speed is reduced to 3km/h, and at the moment, the UNLOCK key is pressed to lock a hand brake.

Specifically, since the second main control chip (as shown in fig. 16) and its auxiliary circuits, such as the crystal oscillator circuit, the key circuit, the over-current suppression and battery voltage detection circuit, and the wake-up circuit, belong to the conventional auxiliary circuits of the control chip, those skilled in the art can implement them according to the prior art, and the connection manner of the specific auxiliary circuits can be obtained by the prior art, therefore, the circuit description of such circuits is not repeated in the above embodiments.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a manual-automatic integrative selector based on hall response which characterized in that, switches detection module, manual-automatic switching detection module and host system including the gear level, keeps off the position, wherein:

the main control module is also used for sending a gear lamp control signal through LIN communication after receiving the real-time gear signal;

the main control module comprises a second main control chip and a second main control chip, wherein the second main control chip comprises first to sixty-fourth pins; the gear switching detection module comprises a third Hall detection chip and a second Hall detection chip, wherein the third Hall detection chip comprises a first pin, a second pin, a third pin and a sixteenth pin; the manual-automatic switching detection module comprises a tenth Hall switch and an eleventh Hall switch;

still include power management module for provide operating power for each module, including first low dropout regulator, contain first to fifteenth pins, wherein:

a forty-second pin and a fifty-eighth pin of the second main control chip are connected in parallel, a parallel end is grounded through a thirteenth capacitor, a twenty-ninth capacitor and a fifty-eighth capacitor respectively, and the parallel end is also used as a first working power supply output end;

in the gear switching detection module:

2. The Hall sensing-based automatic and manual shifter is characterized in that in the automatic and manual shift detection module:

3. The manual-automatic integrated gear shifter based on the Hall induction as claimed in claim 1, further comprising a LIN communication connector and a CAN communication connector, and a gear shifting handball at the top end of the gear shifting lever, wherein the gear shifting handball comprises a slave control module, a backlight and a gear shifting lamp, and wherein:

the backlight lamp is used for providing backlight for the gear lamp.

4. The Hall sensing-based manual-automatic integrated shifter according to claim 3, further comprising a gear lamp adjusting circuit for adjusting the brightness of a gear lamp according to a backlight signal, comprising:

5. The hall induction based manual and automatic integrated shifter according to claim 3, further comprising a shift lever power supply control circuit for supplying power to the shift lever, comprising:

6. The Hall sensing based manual and automatic integrated shifter is characterized in that the slave control module comprises:

7. The Hall sensing based automated manual shifter of claim 3, further comprising a P-shift button and a P-shift button detection circuit, and a UNLOCK button on a shift knob, wherein: