TWI742420B - Control system for locomotive forward and reverse and control method thereof - Google Patents

Abstract

The present invention relates to a control system for locomotive forward and reverse and a control method thereof. The control system of the locomotive forward and reverse includes a motor, a battery, a meter, a controller, a brake switch, and a mode switching and starting switch. The battery is activated or turned off by a key switch. The meter can be used as a driving computer to issue drive commands and drive functions to the controller. The controller is used to receive the information of the meter and control the battery and the motor to be powered or recharged. The brake switch is used to sense whether the rider presses a brake lever, and the brake signal is transmitted back to the meter and the controller. The mode switching and starting switch is electrically connected to the meter, as a start switch in red fire state and as a toggle switch of forward mode and reverse mode.

Description

Control system and control method of locomotive forward and reverse

The present invention relates to a control system for forward and reverse of a locomotive and its control method, in particular to a control system and method for forward and reverse of a locomotive suitable for electric locomotives.

Existing electric vehicles, its reversing technology and methods are currently common, the reversing switch is electrically connected to the motor controller, and the reversing switch is pressed and then the gas pedal is applied to start the reversing of the electric vehicle. Among them, such as Taiwan Patent No. M436592, the electric locomotive must be connected to the controller at the same time, so that all signals can be integrated through the controller, and after the information is comprehensively judged, the controller will output power to reverse. The controller handles more program judgments. Or, for example, Taiwan Patent No. M367114, in this patent case, when the rider presses the reversing switch, it starts to reverse. However, through the above method, the reverse can only be performed when the reverse switch is pressed, and it cannot be controlled through the throttle handle. The reverse force can only be reversed with the preset force.

In addition, the reversing switches of the above patents are directly connected to the motor controller, and the driving mode is not comprehensively judged by components similar to the trip computer, and communicated with other components on the electric vehicle. It may not be able to provide comprehensive protection, and it may happen unexpectedly. risks of.

This is the reason for the inventor. Based on the spirit of active invention, he eagerly thought of a control system and control method for the forward and reverse of a locomotive that can solve the above-mentioned problems. After several studies and experiments, the invention was finally completed.

The main purpose of the present invention is to provide a control system and control method for the forward and reverse of a locomotive. By electrically connecting the mode switch and the start switch or the reverse switch to the instrument respectively, it can communicate with the battery, controller and other components. , To issue drive commands to the controller, and also to communicate with the components to feedback the current situation, and then comprehensive protection can be done to effectively prevent accidents.

To achieve the above objective, the control system for forward and reverse locomotives of the present invention is installed on an electric vehicle, and includes a motor, a battery, an instrument, a controller, a brake switch, and a mode switch and start switch. The battery is turned on or off by a key switch; the instrument has the functions of displaying, receiving and transmitting information, and can be used as a trip computer to issue drive commands and drive functions to the controller; the controller is electrically connected to the motor, battery and instrument, and It communicates with the battery and the instrument to receive the information of the instrument, and control the battery and the motor to be in the state of power supply driving or energy recharging; the brake switch is electrically connected to the instrument to sense the rider's operation and press a brake lever, and The brake signal is sent back to the meter; the mode switch and start switch are electrically connected to the meter as a start switch in the red fire state, and a switch between forward mode and reverse mode.

If the mode switch and the start switch and the brake switch are actuated at the same time, it will enter a red fire state, in which the throttle can be driven by turning the throttle. Thereby, the electric locomotive can start running in the red fire state, and the functions of the mode switching and start switch include the mode switching when in the red fire state, and select a forward mode or a reverse mode.

The above-mentioned communication transmission can be used for data transmission through K-LINE communication protocol, CAN bus or SPI communication protocol. In this way, through the above-mentioned method, the meter, the battery and the controller are allowed to communicate with each other, so as to achieve the power generation goal of controlling the battery and the motor in a power supply drive or energy recharge by means of communication.

Alternatively, the present invention provides another locomotive forward and reverse control system, which is installed on an electric vehicle and includes a motor, a battery, an instrument, a controller, a brake switch, a start switch, and a reverse switch. The battery is turned on or off by a key switch; the instrument has the functions of displaying, receiving and transmitting information, and can be used as a trip computer to issue drive commands and drive functions to the controller; the controller is electrically connected to the motor, battery and instrument, and It communicates with the battery and the instrument to receive the information of the instrument, and control the battery and the motor to be in the state of power supply driving or energy recharging; the brake switch is electrically connected to the instrument to sense the rider's operation and press a brake lever, and The brake signal is transmitted back to the meter; the start switch is electrically connected to the meter as a start switch in the red fire state; the reverse switch is electrically connected to the meter as a switch between forward mode and reverse mode.

If the start switch and the brake switch are actuated at the same time, it will enter a red fire state. In the red fire state, turning the throttle can drive. Thereby, the electric locomotive can start running in the red fire state, and the function of the reverse switch includes the mode switching when in the red fire state, and selects a forward mode or a reverse mode.

With the above design, the present invention can directly communicate with the battery, controller and other components through the meter, issue driving commands to the controller, and accurately accept external information for mode switching, grasp the rider’s operating status, and provide a complete and comprehensive protect.

Another object of the present invention is to provide a method for controlling the forward and reverse of a locomotive, which includes the following steps (A) key activation; (B) judging whether the mode switch and the start switch and the brake switch are activated at the same time, and if so, perform step (C) ), if otherwise, re-execute step (B); (C) enter the red fire state; (D1) determine whether the mode switch and start switch are pressed for a specific time, if yes, execute step (E), if otherwise, execute step (H); (E) Determine whether the vehicle speed is equal to zero, if yes, perform step (F), if not, return to step (D1); (F) enter the reverse mode; (G1) determine whether to press the mode switch and start switch again for a specific time, if yes Go back to step (D1), if otherwise, go to step (J); (H) whether to turn the throttle, if yes, go to step (I), if not go back to step (D1); (I) drive forward; (J) whether Turn the throttle, if yes, go to step (K), if not go back to step (G1); and (K) drive to reverse. That is, in this method, the mode switching can only be achieved by pressing the mode switching and start switch for a specific time. If the mode switching and start switch is touched or accidentally touched, the mode switching will not be triggered, which improves the rider. Security.

The aforementioned specific time may be 3 seconds. In this way, through the setting of a specific time, it can be effectively determined that the rider does have the willingness to switch modes, so as to avoid the occurrence of simple light touch or accidental touch, which may cause safety concerns.

Among them, according to the above-mentioned control method of the locomotive forward and reverse, the present invention further includes another judgment basis for mode switching for the above-mentioned step (D1) and step (G1). Among them, replace step (D1) with: (D2) determine whether to press and hold the mode switch and start switch, if yes, execute step (E), if otherwise, execute step (H); replace step (G1) with: (G2) Judge whether to release the mode switch and start switch, if yes, go back to step (D2), if otherwise, go to step (J); that is, in this method flow, the reverse mode switch needs to hold down the mode switch and start switch and It can be reached at speed = 0. Once the mode switch and start switch are released, it will return to the forward mode. Therefore, the reverse operation can only be performed when the mode switch and start switch are pressed, and the operability for the rider is also quite good. Intuitive.

Furthermore, according to the configuration framework of another locomotive forward and reverse control system provided by the present invention, the control method of locomotive forward and reverse includes the following steps (A) key activation; (B) judging whether the start switch and the brake switch are activated at the same time , If yes, proceed to step (C), if otherwise, re-execute step (B); (C) enter the red fire state; (D3) determine whether to press the reverse switch for a specific time, if yes, proceed to step (E), if otherwise, proceed to step (H); (E) Determine whether the vehicle speed is equal to zero, if yes, perform step (F), if otherwise, return to step (D3); (F) enter the reverse mode; (G3) determine whether to press the reverse switch again for a specific time, If yes, go back to step (D3), if otherwise, go to step (J); (H) whether to turn the throttle, if yes, go to step (I), if not go back to step (D3); (I) drive forward; (J) Whether to turn the accelerator, if yes, go to step (K), if not, go back to step (G3); and (K) drive to reverse. That is, in this method process, the mode switching can only be achieved by pressing the reverse switch for a certain period of time. If the mode switching and start switch are only touched or accidentally touched, the mode switching will not be triggered, which improves the safety of the rider. .

The aforementioned specific time may be 3 seconds. In this way, through the setting of a specific time, it can be effectively determined that the rider does have the willingness to switch modes, so as to avoid the occurrence of simple light touch or accidental touch, which may cause safety concerns.

Among them, according to the above-mentioned control method of the locomotive forward and reverse, the present invention further includes another judgment basis for mode switching with respect to the above-mentioned steps (D3) and (G3). Among them, replace step (D3) with: (D4) determine whether to press and hold the reverse switch, if yes, execute step (E), if otherwise, execute step (H); replace step (G3) with: (G4) determine whether to release Turn on the reversing switch, if yes, go back to step (D4), if not, go to step (J); that is, in this method flow, the reversing mode switch needs to be long pressed and the vehicle speed = 0 to achieve, once released Turn on the reverse switch to return to the forward mode, so the reverse operation can only be performed when the reverse switch is pressed, and the operability for the rider is also quite intuitive.

The above summary and the following detailed description are exemplary in nature to further illustrate the scope of patent application of the present invention. The other objectives and advantages of the present invention will be described in the following description and drawings.

Please refer to FIG. 1, which is a system architecture diagram of a control system for forward and reverse locomotives according to the first embodiment of the present invention. The figure shows a locomotive forward and reverse control system 1, which is installed on an electric vehicle and includes a motor 2, a battery 3, an instrument 4, a controller 5, a brake switch 6, and a mode switch and start switch 7. The motor 2 series converts electrical energy into kinetic energy to achieve the function of driving the vehicle forward or driving the vehicle backward. The battery 3 uses a key switch 31 to turn on or turn off the power of the entire vehicle, providing the entire vehicle power supply, and can supply power to the entire vehicle components such as the instrument 4, head and tail lights and other electrical components. The battery 3 also has a communication interface that can be connected to Other components communicate and transmit information. The meter 4 can also be called a Vehicle Control Unit (VCU) in the present invention. It has the function of displaying and providing driving information to the driver, receiving and transmitting communication functions, and can communicate with the battery 3, the controller 5 and other components. Communication with each other. The communication transmission in this embodiment is through the K-LINE communication protocol, CAN bus or SPI communication protocol for data transmission, allowing the meter 4, the battery 2 and the controller 5 to communicate with each other, so as to control the battery 3 through communication. It is the power generation target for power supply drive or energy recharging with the motor. Furthermore, the meter 4 of the present invention can also be used as a trip computer, accepting the working status of the above-mentioned battery 3, controller 5 and other components, and issuing driving commands and driving functions to the controller 5, and can also be used for battery 3, control The communication function of components such as the device 5 feedback the current situation for protection.

The controller 5 is electrically connected to the motor 2, the battery 3 and the meter 4, and communicates with the battery 3 and the meter 4, and is used to receive the information, status and commands of the meter 4, and control the battery 3 and the motor 2 to drive or energy back. Full state. The brake switch 6 is electrically connected to the meter 4, and is generally installed in the brake components on the handle respectively to sense the operation of the rider to press a brake lever and send the brake signal back to the meter 4. The mode switch and start switch 7 is electrically connected to the meter 4, and is generally set around the faucet or the handle. It is convenient for the rider to hold the handle and can press it with their fingers, but is not easy to accidentally touch the position. It is used as a red fire start switch and forwards. Switch between mode and reverse mode. Among them, if the mode switch and the start switch 7 and the brake switch 6 are actuated at the same time, the prosperous state can be entered, and in the prosperous state, turning the accelerator can drive the vehicle forward or backward.

Please refer to FIG. 2, which is a flowchart of the control method for forward and reverse of a locomotive according to the first embodiment of the present invention. As shown in Fig. 1 and Fig. 2, the control method of the present invention can be realized by the component composition of the control system 1 for the forward and reverse of the locomotive described above. The control method includes the following steps:

(A) Key start. When a key switch 31 is turned on, it is in a standby state. At this time, the battery 3 starts to output power to supply the entire vehicle components, but in this state, the electric vehicle cannot be driven forward or reverse. (B) Determine whether the mode switching and start switch 7 and the brake switch 6 are activated at the same time. If yes, execute step (C), if not, execute step (B) again to make the electric locomotive (C) enter the red fire state before it can start to move forward or fall back.

(D1) Determine whether the mode switch and start switch 7 is pressed for a specific time, if yes, execute step (E), if otherwise, execute step (H). In this embodiment, the specific time is 3 seconds, but it is not limited to this, and may be any specific number of seconds. In this way, through the setting of a specific time, it can be effectively determined that the rider does have the willingness to switch modes, so as to avoid the occurrence of simple light touch or accidental touch, which may cause safety concerns. (E) Determine whether the vehicle speed is equal to zero, if yes, execute step (F), if otherwise, return to step (D1); (F) enter the reverse mode. After the meter 4 judges that it enters the reverse mode, it uses the communication interface to transmit the signal of the reverse mode to the controller 5 so that the motor 2 can drive the reverse. (G1) Determine whether to press the mode switch and start switch again for the specific time, if yes, go back to step (D1), if otherwise, go to step (J).

When the system continues to maintain in the forward mode, (H) judge whether to turn the throttle, if yes, go to step (I), if not, go back to step (D1). (I) Drive forward. The controller 5 can make the motor 2 output corresponding power to move forward according to the amplitude of turning the accelerator. In contrast, when the system continues to maintain in the reverse mode, (J) judge whether to turn the accelerator, if yes, perform step (K), if otherwise, return to step (G1); (K) drive reverse. The controller 5 can make the motor 2 output the corresponding power to reverse according to the amplitude of turning the accelerator.

Please refer to FIG. 3, which is a flowchart of a control method for forward and reverse of a locomotive according to a second embodiment of the present invention. As shown in Fig. 1 and Fig. 3, the control method of the present invention can be realized by the component composition of the control system 1 for the forward and reverse of the locomotive mentioned above. The control method includes the following steps:

(A) Key start. When a key switch 31 is turned on, it is in a standby state. At this time, the battery 3 starts to output power to supply the entire vehicle components, but in this state, the electric vehicle cannot be driven forward or reverse. (B) Determine whether the mode switching and start switch 7 and the brake switch 6 are activated at the same time. If yes, execute step (C), if not, execute step (B) again to make the electric locomotive (C) enter the red fire state before it can start to move forward or fall back.

(D2) Determine whether the mode switch and start switch 7 is long-pressed, if yes, proceed to step (E), if not, proceed to step (H). In this embodiment, long pressing the mode switch and start switch 7 means that the mode switch and start switch 7 must be continuously maintained in a pressed state. In this way, by pressing and holding the mode switch and start switch 7, it can be effectively determined that the rider does have the willingness to switch the mode, avoiding simple light touch or accidental touch, which may cause safety concerns. (E) Determine whether the vehicle speed is equal to zero, if yes, execute step (F), if not, return to step (D2); (F) enter the reverse mode. After the meter 4 judges that it enters the reverse mode, it uses the communication interface to transmit the signal of the reverse mode to the controller 5 so that the motor 2 can drive the reverse. (G2) Determine whether to release the mode switch and start switch for the specific time, if yes, go back to step (D2), if otherwise, go to step (J).

When the system continues to stay in the forward mode, (H) judge whether to turn the throttle, if yes, go to step (I), if not, go back to step (D2). (I) Drive forward. The controller 5 can make the motor 2 output corresponding power to move forward according to the amplitude of turning the accelerator. In contrast, when the system continues to maintain in the reverse mode, (J) judge whether to turn the accelerator, if yes, perform step (K), if otherwise, return to step (G2); (K) drive reverse. The controller 5 can make the motor 2 output the corresponding power to reverse according to the amplitude of turning the accelerator.

Next, please refer to FIG. 4, which is a system architecture diagram of a control system for locomotive forward and reverse according to the second embodiment of the present invention. The figure shows a locomotive forward and reverse control system 1', which is installed on an electric vehicle and includes a motor 2, a battery 3, an instrument 4, a controller 5, a brake switch 6, and a start switch 7' And a reversing switch 8. The motor 2 series converts electrical energy into kinetic energy to achieve the function of driving the vehicle forward or driving the vehicle backward. The battery 3 uses a key switch 31 to turn on or turn off the power of the entire vehicle, providing the entire vehicle power supply, and can supply power to the entire vehicle components such as the instrument 4, head and tail lights and other electrical components. The battery 3 also has a communication interface that can be connected to Other components communicate and transmit information. The meter 4 can also be called a Vehicle Control Unit (VCU) in the present invention. It has the function of displaying and providing driving information to the driver, receiving and transmitting communication functions, and can communicate with the battery 3, the controller 5 and other components. Communication with each other. The communication transmission in this embodiment is through the K-LINE communication protocol, CAN bus or SPI communication protocol for data transmission, allowing the meter 4, the battery 2 and the controller 5 to communicate with each other, so as to control the battery 3 through communication. It is the power generation target for power supply drive or energy recharging with the motor. Furthermore, the meter 4 of the present invention can also be used as a trip computer, accepting the working status of the above-mentioned battery 3, controller 5 and other components, and issuing driving commands and driving functions to the controller 5, and can also be used for battery 3, control The communication function of components such as the device 5 feedback the current situation for protection.

The controller 5 is electrically connected to the motor 2, the battery 3 and the meter 4, and communicates with the battery 3 and the meter 4, and is used to receive the information, status and commands of the meter 4, and control the battery 3 and the motor 2 to drive or energy back. Full state. The brake switch 6 is electrically connected to the meter 4, and is generally installed in the brake components on the handle respectively to sense the operation of the rider to press a brake lever and send the brake signal back to the meter 4. The start switch 7'is electrically connected to the meter 4. It is generally installed around the faucet or the handle, so that the rider can hold the handle and press it with his fingers, but is not easy to accidentally touch the position. It is a red fire start switch, and forward mode and Switch for reverse mode. Among them, if the start switch 7'and the brake switch 6 are actuated at the same time, it can enter the prosperous state, and in the prosperous state, turning the accelerator can drive the vehicle forward or backward. The reverse switch 8 is electrically connected to the meter 4, and is used as a switch between the forward mode and the reverse mode in this embodiment.

Please refer to FIG. 5, which is a flow chart of a control method for forward and reverse of a locomotive according to a third embodiment of the present invention. As shown in Figures 4 and 5, the components of the control system 1'for forward and reverse locomotives described above can be used to implement the control method of the present invention. Among them, the basic step structure of the control method for forward and reverse locomotives of this embodiment Both are the same as the control method of the locomotive forward and reverse in the first embodiment of FIG. 2, except that the difference is: step (B') determines whether the start switch 7'and the brake switch 6 are activated at the same time, and if so, execute step (C) , If otherwise, re-execute step (B'); step (D3) judge whether the reverse switch 8 is pressed for a specific time, if yes, execute step (E), if otherwise, execute step (H); and step (G3) judge whether or not again Press the reverse switch 8 for the specific time, if yes, go back to step (D3), if not, go to step (J). In summary, the control method of this embodiment is similar to the control method of the locomotive forward and reverse of the first embodiment in FIG. 2, mainly because this embodiment changes the aforementioned mode switch and start switch 7 to start switch 7'and reverse Switch 8, so the control method is also different.

Please refer to FIG. 6, which is a flowchart of a method for controlling forward and reverse of a locomotive according to a fourth embodiment of the present invention. As shown in Figures 4 and 6, the components of the aforementioned locomotive forward and reverse control system 1'can be used to implement the control method of the present invention. Among them, the basic step structure of the locomotive forward and reverse control method of this embodiment Both are the same as the control method of the locomotive forward and reverse in the second embodiment of FIG. 3, except that the difference is: step (B') determines whether the start switch 7'and the brake switch 6 are activated at the same time, and if so, execute step (C) , If otherwise, re-execute step (B'); step (D4) judge whether the reverse switch 8 is long pressed, if yes, execute step (E), if otherwise, execute step (H); and step (G4) judge whether to release the reverse switch 8 , If yes, go back to step (D4), if otherwise, go to step (J). In summary, the control method of this embodiment is similar to the control method of locomotive forward and reverse in the second embodiment of FIG. 3, mainly because this embodiment changes the aforementioned mode switch and start switch 7 to start switch 7'and reverse Switch 8, so the control method is also different.

With the above design, the present invention can directly communicate with the battery, controller and other components through the meter, issue driving commands to the controller, and accurately accept external information for mode switching, grasp the rider’s operating status, and provide a complete and comprehensive protect.

The above-mentioned embodiments are merely examples for the convenience of description, and the scope of rights claimed in the present invention should be subject to the scope of the patent application, rather than being limited to the above-mentioned embodiments.

1,1’: Control system for locomotive forward and reverse 2: motor 3: battery 31: Key switch 4: instrument 5: Controller 6: Brake switch 7: Mode switch and start switch 7’: Start switch 8: Reversing switch A,B,B’,C,D1~D4,E,F,G1~G4,H,I,J,K: steps

Fig. 1 is a system architecture diagram of a control system for forward and reverse locomotives according to the first embodiment of the present invention. Fig. 2 is a flowchart of the control method for forward and reverse of a locomotive according to the first embodiment of the present invention. Fig. 3 is a flow chart of the control method for forward and reverse of a locomotive according to the second embodiment of the present invention. Fig. 4 is a system architecture diagram of a control system for forward and reverse locomotives according to the second embodiment of the present invention. Fig. 5 is a flowchart of a control method for forward and reverse of a locomotive according to a third embodiment of the present invention. Fig. 6 is a flowchart of a method for controlling forward and reverse of a locomotive according to a fourth embodiment of the present invention.

1: Control system of locomotive forward and reverse

2: motor

3: battery

31: Key switch

4: instrument

5: Controller

6: Brake switch

7: Mode switch and start switch

Claims (7)

A control method for forward and reverse of a locomotive. The method is used in a control system for forward and reverse of a locomotive. The control system for forward and reverse of a locomotive includes: a motor; a battery, which is activated or turned off by a key switch Vehicle power supply; an instrument with message display, receiving and transmission functions; a controller, which is electrically connected to the motor, the battery and the instrument, and communicates with the battery and the instrument for receiving the information of the instrument, and Control the battery and the motor to be in a power-driven or energy-recharged state; a brake switch, electrically connected to the meter, for sensing the rider's operation and pressing a brake lever, and returning the braking signal to the meter; and a Mode switch and start switch, electrically connected to the meter, as a red fire start switch, and switch between forward mode and reverse mode; the forward and reverse control method of the locomotive includes the following steps: (A) key start; (B) Determine whether the mode switch and start switch and the brake switch are activated at the same time, if yes, perform step (C), if otherwise, perform step (B) again; (C) enter the red fire state; (D1) determine whether to press the mode switch and start The switch lasts for a specific time, if yes, execute step (E), if otherwise, execute step (H); (E) judge whether the vehicle speed is equal to zero, if yes, execute step (F), if otherwise, go back to step (D1); (F) Enter the reverse mode; (G1) Determine whether to press the mode switch and start switch again for a specific time, if yes, go back to step (D1), if otherwise, go to step (J); (H) whether to turn the throttle, if yes, go to step (I), If otherwise, go back to step (D1); (I) drive forward; (J) whether to turn the throttle, if yes, go to step (K), if otherwise go back to step (G1); and (K) drive to reverse. A control method for forward and reverse of a locomotive. The method is used in a control system for forward and reverse of a locomotive. The control system for forward and reverse of a locomotive includes: a motor; a battery, which is activated or turned off by a key switch Vehicle power supply; an instrument with message display, receiving and transmission functions; a controller, which is electrically connected to the motor, the battery and the instrument, and communicates with the battery and the instrument for receiving the information of the instrument, and Control the battery and the motor to be in a power-driven or energy-recharged state; a brake switch, electrically connected to the meter, for sensing the rider's operation and pressing a brake lever, and returning the braking signal to the meter; and a Mode switch and start switch, electrically connected to the meter, as a red fire start switch, and switch between forward mode and reverse mode; the forward and reverse control method of the locomotive includes the following steps: (A) key start; (B) Determine whether the mode switch and start switch and the brake switch are activated at the same time, if yes, execute step (C), if not, execute step (B) again; (C) Enter the prosperous state; (D2) Determine whether the mode switch and start switch is long pressed, if yes, execute step (E), if otherwise, execute step (H); (E) judge whether the vehicle speed is equal to zero, if yes, execute step ( F), if otherwise, go back to step (D2); (F) enter the reverse mode; (G2) judge whether to release the mode switch and start switch, if yes, go back to step (D2), if not, go to step (J); (H) Whether to turn the throttle, if yes, go to step (I), if otherwise, go back to step (D2); (I) Drive forward; (J) Whether to turn the throttle, if yes, go to step (K), if otherwise, go back to step (D2) (G2); and (K) drive reverse. A control method for forward and reverse of a locomotive. The method is used in a control system for forward and reverse of a locomotive. The control system for forward and reverse of a locomotive includes: a motor; a battery, which is activated or turned off by a key switch Vehicle power supply; an instrument with message display, receiving and transmission functions; a controller, which is electrically connected to the motor, the battery and the instrument, and communicates with the battery and the instrument for receiving the information of the instrument, and Control the battery and the motor to be powered or recharged; a brake switch, electrically connected to the meter, used to sense the rider's operation and press a brake lever, and return the braking signal to the meter; a start Switch, electrically connected to the meter, as a start switch in a prosperous state; and A reverse switch, which is electrically connected to the instrument, serves as a switch between forward mode and reverse mode; the control method of the locomotive forward and reverse includes the following steps: (A) key start; (B') judge whether the start switch and the Brake switch, if yes, execute step (C), if not, execute step (B') again; (C) enter the red fire state; (D3) judge whether the reverse switch is pressed for a specific time, if yes, execute step (E), If otherwise, perform step (H); (E) determine whether the vehicle speed is equal to zero, if yes, perform step (F), if otherwise, return to step (D3); (F) enter the reverse mode; (G3) determine whether to press the reverse switch again For a specific time, if yes, go back to step (D3), if otherwise, go to step (J); (H) whether to turn the throttle, if yes, go to step (I), if not go back to step (D3); (I) drive Go forward; (J) Whether to turn the throttle, if yes, go to step (K), if otherwise, go back to step (G3); and (K) drive to reverse. For example, the control method of locomotive forward and reverse described in item 1 or item 2 of the scope of patent application, wherein, actuate the mode switch and start switch and the brake switch at the same time, it will enter a red fire state, in the red fire state, rotate The throttle can be driven. As described in item 3 of the scope of patent application, the forward and reverse control method of a locomotive, wherein simultaneously actuating the start switch and the brake switch will enter a prosperous state. In the prosperous state, the accelerator can be driven by turning the throttle. Such as the control method of locomotive forwarding and reversing described in any one of items 1 to 3 of the scope of patent application, wherein the communication transmission is data transmission through the K-LINE communication protocol, the CAN bus or the SPI communication protocol. Such as the control method of locomotive forward and reverse described in item 1 or item 3 of the scope of patent application, wherein the specific time is 3 seconds.

Images