CN114526331A - Device and method for transmitting neutral-reverse gear signal - Google Patents
Device and method for transmitting neutral-reverse gear signal Download PDFInfo
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- CN114526331A CN114526331A CN202111586289.6A CN202111586289A CN114526331A CN 114526331 A CN114526331 A CN 114526331A CN 202111586289 A CN202111586289 A CN 202111586289A CN 114526331 A CN114526331 A CN 114526331A
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- gearbox
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- neutral
- reverse gear
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 64
- 230000007935 neutral effect Effects 0.000 claims abstract description 63
- 238000006073 displacement reaction Methods 0.000 claims abstract description 38
- KSWHNTPMGZKIOB-UHFFFAOYSA-N 5-hexyl-2-(2-methylphenoxy)phenol Chemical compound OC1=CC(CCCCCC)=CC=C1OC1=CC=CC=C1C KSWHNTPMGZKIOB-UHFFFAOYSA-N 0.000 claims 17
- 101100241771 Arabidopsis thaliana NUP58 gene Proteins 0.000 description 22
- 230000008054 signal transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/42—Ratio indicator devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
Abstract
The invention discloses a device and a method for transmitting a neutral-reverse gear signal.A transmission case TCU, a reverse gear displacement sensor and a gear displacement sensor are arranged on the transmission case; the gear shift sensor is connected with the TCU; the reverse gear displacement sensor is connected with the TCU; the transmission TCU is connected with the control part of the whole vehicle. The TCU of the gearbox reads the numerical value of the sensor, obtains signals and judges whether the state of the gearbox is a neutral state or a reverse state; when the TCU of the gearbox detects that the displacement values of the 12-gear shift sensor, the 34-gear shift sensor and the 56-gear shift sensor are all 0, the gearbox is in a neutral state; when the TCU of the gearbox detects that the displacement of the reverse gear displacement sensor is a preset value, the gearbox is in a reverse gear state. According to the invention, the neutral-reverse gear switch is realized under the condition of canceling the entity signal switch, so that the risk coefficient is reduced, and the reliability of the gearbox is improved.
Description
Technical Field
The invention belongs to the technical field of automobile gearboxes, and particularly relates to a device and a method for transmitting a neutral-reverse gear signal.
Background
Light card AMT gearbox uses traditional trigger formula signal switch to realize the transmission of neutral gear signal more in the present, uses the neutral switch to send the neutral signal, provides the neutral protect function, when the gearbox is located the neutral promptly, the starting circuit of engine could switch on, and whole car side can strike sparks, uses the switch of reversing gear to send the signal of reversing gear, realizes the function of the lamp of controlling the reverse gear. The design is a signal transmission method along the traditional mechanical gearbox. The traditional neutral position signal switch and the traditional reverse gear signal switch need to be provided with hard wires to transmit signals when in work. The signal transmission line between the transmission case and the whole vehicle, namely the transmission case TCU transmits the neutral position signal or the reverse gear signal to the control mechanism of the whole vehicle through the neutral position signal switch or the reverse gear signal switch and the hard wire, thereby realizing the transmission of the signal. However, since there are many box-type components of the AMT, especially many electronic devices and complex structure, any damaged component may result in that the AMT gearbox cannot realize the design function, and the signal switch is a vulnerable component, and there is a certain probability that a fault occurs, so in order to achieve the purpose of reducing the risk factor and improving the reliability of the AMT gearbox, a method for canceling the physical signal switch but still realizing the function thereof is required.
Disclosure of Invention
In order to solve the technical problems, the invention provides a device and a method for transmitting a neutral-reverse gear signal, which can reduce the risk coefficient and improve the reliability of a gearbox by realizing neutral-reverse gear switching under the condition of canceling an entity signal switch.
The invention is realized by the following technical scheme:
a device for transmitting a neutral-reverse gear signal comprises a transmission TCU and a sensor, wherein the transmission TCU is arranged on a transmission;
the sensor comprises a reverse gear displacement sensor and a gear displacement sensor;
one end of the gear shift sensor is connected with the gearbox, and the other end of the gear shift sensor is connected with the gearbox TCU; one end of the reverse gear displacement sensor is connected with the gearbox, and the other end of the reverse gear displacement sensor is connected with the gearbox TCU; and the transmission TCU is connected with the whole vehicle control part.
Preferably, the gearbox is also provided with a finished automobile hard wire joint for transmitting signals to the finished automobile control part, one end of the finished automobile hard wire joint is connected with the gearbox TCU, and the other end of the finished automobile hard wire joint is connected with the finished automobile control part through a finished automobile hard wire.
Preferably, two special stitches are arranged in the hard wire connector of the whole vehicle.
Preferably, the two special pins comprise a neutral special pin and a reverse special pin.
Preferably, the transmission TCU is connected with the vehicle control part through CAN network signals.
A method for transmitting a reverse gear signal comprises the following steps,
the TCU of the gearbox reads the numerical value of the sensor, obtains signals and judges whether the state of the gearbox is a neutral state or a reverse state;
when the transmission TCU detects that the displacement value of the gear shift sensor is 0, the transmission is in a neutral state at the moment, and the transmission TCU sends a signal and transmits the signal to a vehicle control part;
when the transmission TCU detects that the displacement of the reverse gear displacement sensor is a preset value, the transmission is in a reverse gear state at the moment, and the transmission TCU sends a signal to a vehicle control part.
Preferably, the gearbox is provided with a whole vehicle hard wire connector, and a neutral special pin and a reverse special pin are arranged in the whole vehicle hard wire connector; when the gearbox is in a neutral position state, the gearbox TCU sends a neutral position analog signal, and a neutral position special pin in a hard wire joint of the whole vehicle is transmitted to a control part of the whole vehicle; when the gear box is in a reverse gear state, the gear box TCU sends a reverse gear analog signal, and a reverse gear special pin in a hard wire joint of the whole vehicle is transmitted to a control part of the whole vehicle.
Preferably, the transmission TCU sends a neutral analog signal as a low level signal; the speed changing box TCU sends a reverse gear analog signal which is a high level signal.
Preferably, when the gearbox is in a neutral position state, the message information sent by the gearbox TCU is 0, and the message information is transmitted to the whole vehicle CAN network and transmitted to the whole vehicle control part; when the gearbox is in a reverse gear state, the gearbox TCU sends out message information of-1, and the message information is transmitted to a whole vehicle CAN network and transmitted to a whole vehicle control part.
Preferably, the message information sent by the transmission TCU is a digital signal; the digital signal is realized by transmitting a sequence of electrical pulses.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a device and a method for transmitting a neutral-reverse gear signal, which can reduce the risk coefficient and improve the reliability of a gearbox by realizing neutral-reverse gear switching under the condition of canceling an entity signal switch. The number of unnecessary and easily damaged gear pressure switch parts is reduced by utilizing the TCU of the gearbox and the displacement sensors of all gears on the premise of realizing the original functions, so that the structure is simpler, and the reliability of the gearbox is improved; in addition, an idle reverse gear switch is eliminated, so that the manufacturing cost is reduced during production;
further, a method of sending messages or analog signals by a transmission TCU is adopted, and under the condition that a signal switch is not used, the neutral position protection function and the function of controlling a reverse gear lamp are realized. The method has the advantages that the structure of the gearbox is simpler, the number of external wire harnesses is reduced, the reliability of the gearbox is improved, and the manufacturing cost, the maintenance time cost and the maintenance and replacement cost when the after-sales fault occurs are reduced.
Furthermore, when the gearbox cannot realize the neutral protection or control the reverse light function, the problem of whether the signal switch is damaged or not is not considered, so that the maintenance and replacement cost is saved, meanwhile, only a computer is needed to check whether the analog signal or the message is normally sent or not, and the time cost for troubleshooting is saved.
Description of the drawings:
FIG. 1 is a diagram of the apparatus for transmitting reverse gear signal according to the present invention;
FIG. 2 is a partial schematic view of a transmission TCU and hard-line coupling of the present invention;
FIG. 3 is a partial schematic view of the reverse range displacement sensor of the present invention;
FIG. 4 is a partial schematic view of the shift position sensor of the present invention;
FIG. 5 is a diagram of a signal transmission method according to the present invention, illustrating a technical route 1;
fig. 6 is a diagram of a signal transmission method according to the present invention, illustrating a technical route 2.
In the figure: 1. the speed changing box TCU 2, the whole vehicle hard wire joint 3, the reverse gear displacement sensor 4, the gear shift sensor 41, 12, the gear shift sensor 42, 34 and the gear shift sensor 43, 56.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to examples. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
A device for transmitting a neutral-reverse gear signal is characterized in that a transmission TCU1 and a sensor are arranged on the transmission; as shown in fig. 1 and 2;
the sensors comprise a reverse gear displacement sensor 3 and a gear displacement sensor 4; the shift position sensor 4 includes 12-shift position shift sensors 41, 34-shift position shift sensors 42, 56-shift position shift sensor 43, as shown in fig. 3 and 4;
one end of the gear shift sensor 4 is connected with the gearbox, and the other end of the gear shift sensor 4 is connected with the gearbox TCU 1; one end of the reverse gear displacement sensor 3 is connected with the gearbox, and the other end of the reverse gear displacement sensor 3 is connected with the gearbox TCU 1; the transmission TCU1 is connected with the vehicle control part.
The gearbox also comprises a whole vehicle hard wire connector 2 used for transmitting signals to a whole vehicle control part, the whole vehicle hard wire connector 2 is connected with the gearbox TCU1, and the other end of the whole vehicle hard wire connector 2 is connected with the whole vehicle control part through a whole vehicle hard wire.
The transmission TCU1 is connected with the vehicle control part through CAN network signals.
Two special stitches are arranged in the hard wire connector 2 of the whole vehicle. The special two-way stitch comprises a neutral special stitch and a reverse special stitch.
A method of transmitting a reverse neutral signal, comprising the steps of:
the transmission TCU1 reads the value of the sensor, acquires a signal and judges whether the state of the transmission is a neutral state or a reverse state;
when the gear shift sensors 41, 42 and 43 of the 12 gears and the gear shift sensor 3 of the reverse gear in the graph 3 are all detected to be 0 by the gear box TCU1, the gear box is in a neutral state at the moment, and the gear box TCU1 sends a signal to be transmitted to the control part of the whole vehicle;
when the transmission TCU1 detects that the displacement of the reverse displacement sensor 3 is a preset value, the transmission is in a reverse state at the moment, and the transmission TCU1 sends a signal to a vehicle control part.
When the gearbox is in a neutral position state, the gearbox TCU1 sends a neutral position analog signal, and the neutral position analog signal is transmitted to a vehicle control part through a neutral position special pin in a vehicle hard wire connector 2; when the gearbox is in a reverse gear state, the gearbox TCU1 sends a reverse gear analog signal, and the reverse gear analog signal is transmitted to a vehicle control part through a reverse gear special pin in the vehicle hard wire connector 2.
The transmission TCU1 sends out neutral position analog signals as low level signals; the transmission TCU1 sends a reverse gear analog signal as a high level signal.
When the gearbox is in a neutral position state, the gearbox TCU1 sends out message information of 0, and the message information is transmitted to a whole vehicle CAN network and transmitted to a whole vehicle control part; when the gearbox is in a reverse gear state, the gearbox TCU1 sends out message information of-1, and the message information is transmitted to a whole vehicle CAN network and transmitted to a whole vehicle control part.
The transmission TCU1 sends out message information as digital signals; the digital signal is realized by transmitting a sequence of electrical pulses.
The following detailed description is illustrative of the embodiments and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
As shown in fig. 1, in the case of canceling the neutral signal switch and the reverse signal switch, the original function can be realized through two technical routes. First, the transmission TCU1 determines whether the transmission is in a neutral state by reading the values of the 12-gear shift sensors 41, 34-gear shift sensors 42, 56-gear shift sensor 43 in fig. 4 and the reverse shift sensor 3 in fig. 3: if the feedback values of the four sensors are all 0, the gearbox is in a neutral state; if any one feedback value of the four sensors is not 0, the gearbox is in a gear shifting state. Similarly, the transmission TCU1 determines whether the transmission is in the reverse gear state by reading the value of the reverse gear displacement sensor 10: if the numerical value is 0, the reverse gear state is not achieved; if the value is 1, the gearbox is in a reverse gear state.
As shown in the technical route 1 in fig. 5, the transmission TCU1 sends an analog signal, i.e., a signal simulating a conventional signal switch, as shown in fig. 2, and is connected to the vehicle hard line via the transmission and the vehicle hard line connector 2, so as to transmit the signal to the vehicle control part. There are two dedicated stitches in the gear box and vehicle hardline connector 2, used for transmitting the neutral position analog signal and reversing the analog signal: when the gearbox is in a neutral position state, the gearbox TCU1 simulates a low level signal and transmits the low level signal to a finished automobile control part from a neutral position special pin in the gearbox and the finished automobile hard wire connector 2; when the gearbox is in a reverse gear state, the gearbox TCU1 simulates a high level signal and transmits the high level signal to a vehicle control part from a reverse gear special pin in the gearbox and the vehicle hard wire connector 2.
As shown in the technical route 2 in fig. 6, the transmission TCU1 transmits information to the entire vehicle CAN network by sending a message specified in the internationally recognized CAN communication network J1939 protocol. When the gearbox is in a neutral position state, the current gear signal SPN code of the gearbox specified in the J1939 protocol is 163, and the SPN code is a message with a unique number in the protocol and should send '0'; when the gearbox is in a reverse gear state, a message of a current gear signal of the gearbox, which is specified in a J1939 protocol, should send out '1'. At the moment, the whole vehicle control part CAN receive digital information from the whole vehicle CAN network to acquire whether the gearbox is in a neutral position state or a reverse gear state, so that the neutral position protection function or the reverse gear lamp control function is activated.
However, with conventional transmission of a neutral signal with a neutral switch, the mechanical structure inside the transmission puts stress on the neutral switch when the transmission is in neutral. At the moment, the neutral position switch is stressed, a low level signal is output, and the signal is directly output to the whole vehicle from a gearbox and a whole vehicle hard wire connector through a neutral position signal switch hard wire. In the conventional transmission of a reverse gear signal with a reverse gear switch, when the transmission is in a reverse gear, a mechanical structure inside the transmission presses the reverse gear switch. At the moment, the reverse gear switch is pressed, a high level signal is output, and the signal is directly output to the whole vehicle from a gearbox and a whole vehicle hard wire connector through a reverse gear signal switch hard wire.
According to the invention, for the neutral position signal transmission without the neutral position switch, the gear displacement sensor of the AMT gearbox is directly used for judging whether the gearbox is in the neutral position or not. For an AMT gearbox, a core gearbox TCU of the AMT gearbox utilizes various sensors to detect the running state of the gearbox, and a position signal of a gear shifting electromagnetic valve is transmitted to the gearbox TCU. If the TCU detects that the displacement values of the three displacement sensors are all 0, the program determines that the transmission is in neutral.
And then, the TCU is used for sending a neutral position analog signal which is a low level signal, namely, a signal output after the neutral position switch is stressed is simulated, and the signal is output to the whole vehicle through a hard wire joint of a gearbox and the whole vehicle. Or the TCU is used for sending out message information '0', namely a digital signal, the signal is not transmitted through high and low levels, but is realized by transmitting an electric pulse sequence, and the signal is output to the whole vehicle from a gearbox and a hard wire connector of the whole vehicle.
According to the invention, for the neutral position signal transmission without a reverse gear switch, at the moment, whether the gearbox is in a reverse gear is judged by directly using a reverse gear displacement sensor of the AMT gearbox. The reverse gear displacement sensor transmits the position signal of the reverse gear electromagnetic valve to the reverse gearbox TCU through a red line. If the TCU detects that the displacement of the reverse displacement sensor is a set value X, the program determines that the transmission is in reverse.
And then, by utilizing the technical route 1, the TCU sends a reverse gear analog signal which is a high-level signal, namely, a signal output after the reverse gear switch is pressed is simulated, and the signal is output to the whole vehicle from the gearbox and the hard wire joint of the whole vehicle. Analog signals: the continuously varying electromagnetic waves are transmitted on various media, the signaling method used by technical line 1, because of the varying high and low level signals transmitted. Or by using the technical route 2, the TCU sends out message information '-1', namely a digital signal, the signal is not transmitted by high and low levels, but is realized by transmitting an electric pulse sequence, and the signal is output to the whole vehicle from a gearbox and a hard wire connector of the whole vehicle. Digital signal: a sequence of voltage pulses transmitted over various media. The signal transmission method used in the technical line 2 uses an electric pulse sequence to represent information such as "0", "1", and the like.
Claims (10)
1. A device for transmitting a neutral-reverse signal is characterized by comprising a transmission TCU (1) and a sensor, wherein the transmission TCU and the sensor are arranged on a transmission;
the sensors comprise a reverse gear displacement sensor (3) and a gear displacement sensor (4);
one end of the gear shift sensor (4) is connected with the gearbox, and the other end of the gear shift sensor (4) is connected with the gearbox TCU (1); one end of the reverse gear displacement sensor (3) is connected with the gearbox, and the other end of the reverse gear displacement sensor (3) is connected with the gearbox TCU (1); and the transmission TCU (1) is connected with a vehicle control part.
2. The device for transmitting the neutral-reverse gear signal according to claim 1, wherein a finished vehicle hard wire connector (2) for transmitting a signal to a finished vehicle control part is further arranged on the gearbox, one end of the finished vehicle hard wire connector (2) is connected with the gearbox TCU (1), and the other end of the finished vehicle hard wire connector (2) is connected with the finished vehicle control part through a finished vehicle hard wire.
3. The device for transmitting the neutral-reverse gear signal according to claim 2, wherein a dedicated two-way pin is arranged in the hard wire connector (2) of the whole vehicle.
4. The device for transmitting the signal of the neutral reverse gear according to claim 3, wherein the two pins comprise a pin dedicated to the neutral gear and a pin dedicated to the reverse gear.
5. The device for transmitting the neutral-reverse gear signal according to claim 1, wherein the transmission TCU (1) is connected with a vehicle control part through a CAN network signal.
6. A method for transmitting a reverse neutral signal, according to any one of claims 1 to 5, comprising,
the method comprises the following steps that a speed changing box TCU (1) reads a numerical value of a sensor, obtains a signal and judges whether the state of the speed changing box is a neutral state or a reverse state;
when the transmission TCU (1) detects that the displacement value of the gear displacement sensor (4) is 0, the transmission is in a neutral state at the moment, and the transmission TCU (1) sends a signal to be transmitted to a vehicle control part;
when the transmission TCU (1) detects that the displacement of the reverse gear displacement sensor (3) is a preset value, the transmission is in a reverse gear state at the moment, and the transmission TCU (1) sends a signal to a vehicle control part.
7. The method for transmitting the neutral-reverse signal according to claim 6, wherein a whole vehicle hard-wire connector (2) is arranged on the gearbox, and a neutral-gear special pin and a reverse-gear special pin are arranged in the whole vehicle hard-wire connector (2); when the gearbox is in a neutral position state, the gearbox TCU (1) sends a neutral position analog signal, and a neutral position special pin in the finished automobile hard wire connector (2) is transmitted to a finished automobile control part; when the gearbox is in a reverse gear state, the gearbox TCU (1) sends a reverse gear analog signal, and a reverse gear special pin in the vehicle hard wire connector (2) is transmitted to a vehicle control part.
8. The method for transmitting a reverse gear signal according to claim 7, characterized in that the transmission TCU (1) sends out a neutral analog signal as a low level signal; the speed changing box TCU (1) sends a reverse gear analog signal which is a high level signal.
9. The method for transmitting the neutral-reverse signal according to claim 6, wherein when the transmission is in a neutral state, the transmission TCU (1) sends out a message of 0, and the message is transmitted to a whole vehicle CAN network and transmitted to a whole vehicle control part; when the gearbox is in a reverse gear state, the gearbox TCU (1) sends out message information of-1, and the message information is transmitted to a whole vehicle CAN network and transmitted to a whole vehicle control part.
10. The method for transmitting the reverse gear signal according to claim 9, wherein the message information sent by the transmission TCU (1) is a digital signal; the digital signal is realized by transmitting a sequence of electrical pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111586289.6A CN114526331A (en) | 2021-12-20 | 2021-12-20 | Device and method for transmitting neutral-reverse gear signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111586289.6A CN114526331A (en) | 2021-12-20 | 2021-12-20 | Device and method for transmitting neutral-reverse gear signal |
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Application publication date: 20220524 |