阅读说明：本技术 一种电子换挡系统及汽车 (Electronic gear shifting system and automobile ) 是由 谢钰敏 黄树程 蓝世华 刘挺锐 张浩龙 朱志婷 于 2020-05-14 设计创作，主要内容包括：本发明公开一种电子换挡系统及汽车,其中,电子换挡系统包括：X型的挡位分布结构,功能挡位分别位于X型的四个端点,换挡自回位点位于X型的中央交叉处,由此形成X型的换挡路径；换挡检测装置,用于响应换挡杆在所述X型的换挡路径内的操作,检测有效挡位；微控制器MCU,与所述换挡检测装置电连接,用于在所述换挡检测装置检测到有效挡位时控制执行换挡。本发明的挡位分布结构新颖独特,一方面可以避免传统直排式挡位分布结构在盲操作时容易发生错误的缺陷,另一方面还能满足个性化需求,提高车型辨识度；换挡检测装置和换挡执行装置分开设置,可以为后续的自动驾驶打下基础。(The invention discloses an electronic gear shifting system and an automobile, wherein the electronic gear shifting system comprises: the gear shifting self-return point is positioned at the central intersection of the X type, so that an X-type gear shifting path is formed; shift detection means for detecting an effective shift position in response to an operation of a shift lever in the X-shaped shift path; and the microcontroller MCU is electrically connected with the gear shifting detection device and used for controlling and executing gear shifting when the gear shifting detection device detects an effective gear. The gear distribution structure is novel and unique, so that the defect that the traditional straight-line gear distribution structure is easy to generate errors during blind operation can be avoided, personalized requirements can be met, and the vehicle type identification degree is improved; the gear shifting detection device and the gear shifting execution device are arranged separately, and a foundation can be laid for subsequent automatic driving.)

1. An electronic gear shifting system, comprising:

the gear shifting self-return point is positioned at the central intersection of the X type, so that an X-type gear shifting path is formed;

shift detection means for detecting an effective shift position in response to an operation of a shift lever in the X-shaped shift path;

and the microcontroller MCU is electrically connected with the gear shifting detection device and used for controlling and executing gear shifting when the gear shifting detection device detects an effective gear.

2. The electronic shifting system according to claim 1, wherein in the functional gears, P is located at an upper left end point of the X-type gear distribution structure, R is located at an upper right end point of the X-type gear distribution structure, N is located at a lower left end point of the X-type gear distribution structure, and D/S is located at a lower right end point of the X-type gear distribution structure.

3. The electronic gear shift system according to claim 1, wherein the gear shift detection device comprises hall sensors, which are respectively disposed on the shift path of the functional gears and near each functional gear for collecting a position signal of a shift lever to detect an effective gear.

4. The electronic shift system according to claim 1, wherein the shift detection means includes angle hall sensors respectively provided in the directions of an abscissa axis and an ordinate axis with the shift self-return point as a coordinate origin for acquiring coordinates of the shift lever to detect the effective shift position.

5. The electronic shift system according to claim 1, wherein the shift detection device further comprises a mode switch for generating a mode switching signal in response to an operation trigger of a driver and transmitting the mode switching signal to the microcontroller MCU, and the microcontroller MCU performs cyclic switching of the D range and the S range.

6. The electronic shifting system of claim 1, further comprising a shift actuator, the shift actuator further comprising:

motor drive chip, cable motor and shift cable, motor drive chip with microcontroller MCU electricity is connected, is used for providing required operating voltage and the electric current of cable motor, the cable motor is used for right through rotary motion the cable of shifting operates to carry out the switching of function fender position.

7. The electronic gear shift system according to claim 1, wherein the gear shift detection device further comprises a gear indicator light electrically connected to the microcontroller MCU for indicating a current gear after a gear shift is successful.

8. An automobile, characterized in that the automobile has an electronic gear shift system according to any one of claims 1 to 7.

Technical Field

The invention belongs to the technical field of automobiles, and particularly relates to an electronic gear shifting system and an automobile.

Background

The traditional mechanical gear shifting system is generally linked to a gear selection switch of a transmission by using a zipper, the gear selection is determined by the travel of the zipper, the whole mechanism occupies large space, the zipper needs to penetrate through a firewall, and the interior trim arrangement is limited greatly. With the development of automotive electronics technology, due to the flexible modeling (rod type, knob type and button type), the electronic gear shifting system is convenient, light and durable in gear shifting, can prevent misoperation of a driver after safety-responsible logic is added, is safe and reliable, and gradually has the tendency of replacing the traditional mechanical zipper type gear shifting system. The gear shift is typically performed by a motor driving a mechanical rocker arm to control the zipper. However, the existing electronic gear shifting system still has the defects in structure: the direct-row gears are easy to shift in a wrong way during blind operation, the stepped gears are relatively complex in operation, and the key-type gears cannot realize blind operation and the like.

Disclosure of Invention

The technical problem to be solved by the embodiment of the invention is to provide an electronic gear shifting system and an automobile, wherein the electronic gear shifting system is simple in gear structure and easy to operate.

To solve the above technical problem, the present invention provides an electronic shift system, including:

the gear shifting self-return point is positioned at the central intersection of the X type, so that an X-type gear shifting path is formed;

shift detection means for detecting an effective shift position in response to an operation of a shift lever in the X-shaped shift path;

and the microcontroller MCU is electrically connected with the gear shifting detection device and used for controlling and executing gear shifting when the gear shifting detection device detects an effective gear.

Further, in the functional gears, P is located at an upper left end point of the X-type gear distribution structure, R is located at an upper right end point of the X-type gear distribution structure, N is located at a lower left end point of the X-type gear distribution structure, and D/S is located at a lower right end point of the X-type gear distribution structure.

Furthermore, the gear shifting detection device comprises switch Hall sensors, wherein the switch Hall sensors are respectively arranged on the gear shifting paths of the function gears and close to the positions of the function gears, and are used for acquiring position signals of the gear shifting lever to detect effective gears.

Further, the gear shifting detection device comprises an angle hall sensor which is respectively arranged on the abscissa axis and the ordinate axis direction with the gear shifting self-return point as the origin of coordinates and used for acquiring coordinates of the gear shifting rod to detect the effective gear.

Further, the gear shifting detection device further comprises a mode switching switch, and the mode switching switch is used for responding to the operation trigger of a driver to generate a mode switching signal, transmitting the mode switching signal to the microcontroller MCU, and performing cyclic switching of the D gear and the S gear by the microcontroller MCU.

Further, the electronic gear shifting system further includes a gear shifting executing device, and the gear shifting executing device further includes:

motor drive chip, cable motor and shift cable, motor drive chip with microcontroller MCU electricity is connected, is used for providing required operating voltage and the electric current of cable motor, the cable motor is used for right through rotary motion the cable of shifting operates to carry out the switching of function fender position.

Further, the gear shifting detection device further comprises a gear indicator light which is electrically connected with the microcontroller MCU and used for indicating the current gear after the gear shifting is successful.

The invention further provides an automobile which is provided with the electronic gear shifting system.

The implementation of the invention has the following beneficial effects: the gear distribution structure is novel and unique, so that the defect that the traditional straight-line gear distribution structure is easy to generate errors during blind operation can be avoided, the personalized requirements can be met, and the vehicle type identification degree is improved; the gear shifting detection device and the gear shifting execution device are arranged separately, and a foundation can be laid for subsequent automatic driving.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram of a gear distribution structure of an electronic shift system according to an embodiment of the present invention.

Fig. 2 is an electrical schematic block diagram of an electronic shift system according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments in which the invention may be practiced.

Referring to fig. 1 and fig. 2, an embodiment of the invention provides an electronic shift system, including:

the gear shifting self-return point is positioned at the central intersection of the X type, so that an X-type gear shifting path is formed;

shift detection means for detecting an effective shift position in response to an operation of a shift lever in the X-shaped shift path;

and the microcontroller MCU is electrically connected with the gear shifting detection device and used for controlling and executing gear shifting when the gear shifting detection device detects an effective gear.

The functional gears of the present embodiment include P (parking gear), R (reverse gear), N (neutral gear), and D/S (forward/sport gear), wherein D/S share one position, and the switching is differentiated by the mode selector switch SW. The mode switch SW is located below the X-type gear distribution. As an example, four endpoints of the X-type gear distribution structure are set as an upper left endpoint, an upper right endpoint, a lower left endpoint, and a lower right endpoint, and then a common distribution position of the functional gears in this embodiment is: the P gear is located at an upper left corner end point, the R gear is located at an upper right corner end point, the N gear is located at a lower left corner end point, the D/S gear is located at a lower right corner end point, namely the P gear and the R gear are located on the upper half portion of the X-type gear distribution structure, and the N gear and the D/S gear are located on the lower half portion of the X-type gear distribution structure. The central crossing of the X shape is a gear shifting self-return point O, and the gear shifting rod can automatically return to the point O after gear shifting is completed each time.

For example, when parking is needed, the gear shift lever is operated to move from a gear shift self-return point O to a gear P position (an upper left corner endpoint of an X-shaped gear distribution structure), after an effective gear, namely the gear P, is detected by the gear shift detection device, the gear shift motor is driven to control the mechanical rocker arm, the gear shift zipper is pulled, so that gear shift is performed, a gear which is successfully performed is displayed through a gear indicator lamp corresponding to the gear, and meanwhile, the gear shift lever returns to the gear shift self-return point O. If another example is needed, when a reverse operation is required, the shift lever is operated to move from the shift self-return point O to the R-shift position (the upper right end point of the X-type shift distribution structure), after the effective shift is detected by the shift detection device, i.e., the R-shift position, the microcontroller MCU controls the mechanical rocker arm by driving the cable motor to pull the shift cable, so as to perform the shift of the shift position, the successfully performed shift position is displayed by the shift position indicator lamp corresponding to the shift position, and the shift lever returns to the shift self-return point O. As an example, the gear indicator light is typically an LED light.

It can be understood that such a gear distribution complies with the usual gear distribution, on the one hand, with the operating habits of the driver, for example, when the shift lever is operated to execute a P-shift or an R-shift, the shift path of the shift lever is generally forward or upward (the P-shift and the R-shift are respectively located at the upper left end point and the upper right end point of the X-type gear distribution structure) and still resembles the conventional inline shift; on the other hand, the P gear and the R gear are respectively positioned at the upper left corner endpoint and the upper right corner endpoint of the X-shaped gear distribution structure, and the shifting paths of the gear shift lever are respectively moved towards the left upper corner and the right upper corner on the basis of the forward or upward overall, so that the defect that the gear shift is easy to shift by mistake in the blind operation of the traditional straight-line gear can be overcome.

In this embodiment, the detection device that shifts specifically is the fender position detection sensor, can have two kinds of selections: the installation position of the switch Hall sensor or the angle Hall sensor can be calibrated through tests. Generally, a switch hall sensor is respectively arranged on a shifting path of four functional gears and close to each functional gear, and the gears are detected through signals collected by the switch hall sensors. For example, a switch hall sensor is placed on a shift path of the N-gear (shift self-return point O — N gear) and near the N-gear (lower left corner end point of the X-type gear distribution structure), when the shift lever is operated to move along the shift path of the N-gear to reach the position of the corresponding switch hall sensor, a signal collected by the switch hall sensor is sent to the MCU, and the MCU controls the mechanical rocker arm by driving the shift motor to pull the shift cable, thereby performing the shift of the gears.

In addition, the gear shifting self-return point O is used as a coordinate origin, the angle Hall sensors are respectively arranged in the directions of the abscissa axis and the ordinate axis, the angle Hall sensors are respectively arranged in the transverse direction and the longitudinal direction, and the effective gear is detected by acquiring the coordinate of the gear shifting rod.

It is understood that the present embodiment is not an innovative gear detection sensor, and the above arrangement and detection principle are well known and can be implemented by those skilled in the art.

The gear shift detection device further comprises a mode switching switch which can be represented by a switch button below the X-type gear distribution structure as shown in fig. 1, when a driver presses the button, a mode switching signal is generated by triggering, the mode switching signal is transmitted to the microcontroller MCU, and the microcontroller MCU performs cyclic switching of the D gear and the S gear.

The electronic gear shifting system of the present embodiment further includes a gear shifting executing device, and the gear shifting executing device further includes:

motor drive chip, cable motor and the cable of shifting, motor drive chip is used for providing required operating voltage and the electric current of cable motor, the cable motor is used for right through rotary motion the cable of shifting operates to carry out the switching that the function kept off the position.

As common electrical element configuration, the power supply module is responsible for a power supply required by the MCU to work, and a 12V power supply of an in-vehicle network is converted into 5V or 3.3V voltage; the crystal oscillator and the reset circuit are the vibration frequency and the reset mode required by the MCU. The MCU controls the motor driving chip in a PWM mode. The gear shifting inhaul cable is mechanically connected with the transmission, and the automatic gearbox control unit TCU is in hard-line connection with the MCU.

An example of selecting some of the electrical components in this embodiment is as follows: the microcontroller MCU selects a Ruisa RH850 series chip, the angle Hall sensor selects A1335 of a double belt of the Allegro, the switch Hall sensor selects A1123 of the Allegro, and the motor driving chip selects A3922 of the Allegro.

The embodiment of the invention further provides an automobile which is provided with the electronic gear shifting system of the embodiment I.

As can be seen from the above description, compared with the prior art, the beneficial effects of the present invention are: the gear distribution structure is novel and unique, so that the defect that the traditional straight-line gear distribution structure is easy to generate errors during blind operation can be avoided, the personalized requirements can be met, and the vehicle type identification degree is improved; the gear shifting detection device and the gear shifting execution device are arranged separately, and a foundation can be laid for subsequent automatic driving.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.