Systems and methods for intelligently engaging multiple brakes
A system for multiple brakes intelligently controlled by a single brake input on a personal mobility vehicle. By determining a front and rear brake differential based on the position and weight of the rider as well as the environmental and vehicle conditions, the system may reduce the risk of the vehicle skidding or tipping due to over-braking. In some embodiments, a rider may use a single brake lever to indicate a desire to brake and the system may make determinations about how to apply a combination of mechanical and electrical brakes to front and back wheels. By applying different braking systems based on a combination of controls and sensors, the system may improve user experience and user safety, especially for inexperienced riders.
1. A system, comprising:
a front brake and a rear brake of a personal mobility vehicle;
a first brake lever and a second brake lever that are configured to, in response to receiving input, initiate engagement of the front brake and the rear brake, respectively;
a weight sensor configured to detect a condition affecting braking of the personal mobility vehicle, wherein the weight sensor is associated with a seating portion of the personal mobility vehicle;
a controller configured to:
determine a first brake force to be applied to the front brake and a second brake force to be applied to the rear brake based at least in part on the condition affecting the braking of the personal mobility vehicle, wherein the condition affecting the braking comprises a position and a weight of a rider of the personal mobility vehicle; and
engage the front brake by applying the first brake force and the rear brake by applying the second brake force, and
an output mechanism configured to present an indication to the rider of the personal mobility vehicle of which of the first brake lever or the second brake lever to apply to reduce momentum of the personal mobility vehicle, the output mechanism configured to present the indication based at least in part on a predetermined distribution differential between the first brake force and the second brake force, and the output mechanism being further configured to present the indication prior to the engagement of the front brake and the rear brake.
2. The system of claim 1 , wherein the controller is configured to determine the first brake force to be applied to the front brake and the second brake force to be applied to the rear brake by determining a distribution differential between the first brake force and the second brake force.
3. The system of claim 1 , wherein the controller is further configured to increase the second brake force by:
determining that the weight of the rider of the personal mobility vehicle is distributed toward a front of the personal mobility vehicle; and
increasing the second brake force to be applied to the rear brake of the personal mobility vehicle based at least in part on determining that the weight of the rider is distributed towards the front of the personal mobility vehicle.
4. The system of claim 1 , wherein the controller is further configured to increase the first brake force by:
determining that the weight of the rider of the personal mobility vehicle is distributed toward a rear of the personal mobility vehicle; and
increasing the first brake force to be applied to the front brake of the personal mobility vehicle based at least in part on determining that the weight of the rider is distributed towards the rear of the personal mobility vehicle.
5. The system of claim 1 , wherein the controller is further configured to increase the second brake force by:
receiving information from a sensor that indicates that a front wheel of the personal mobility vehicle lacks traction; and
increasing the second brake force to be applied to the rear brake based at least in part on receiving the information from the sensor that indicates that the front wheel of the personal mobility vehicle lacks traction.
6. The system of claim 1 , wherein the controller is further configured to increase the first brake force by:
receiving information from a sensor that indicates that a rear wheel of the personal mobility vehicle lacks traction; and
increasing the first brake force to be applied to the front brake based at least in part on receiving the information from the sensor that indicates that the rear wheel of the personal mobility vehicle lacks traction.
7. The system of claim 1 , wherein the controller is further configured to increase the second brake force by:
receiving information from a sensor that indicates a probability of the personal mobility vehicle tipping over; and
increasing the second brake force to be applied to the rear brake based at least in part on receiving the information from the sensor that indicates the probability of the personal mobility vehicle tipping over.
8. The system of claim 1 , wherein:
the front brake comprises a front mechanical brake and a front electrical brake;
the rear brake comprises a rear mechanical brake and a rear electrical brake;
the front mechanical brake and the rear mechanical brake comprise a mechanical brake system;
the front electrical brake and the rear electrical brake comprise an electrical brake system; and wherein the controller is further configured to determine a distribution differential between the mechanical brake system and the electrical brake system.
9. The system of claim 8 , further comprising making a determination, by the controller, to engage a regenerative braking portion of the electrical brake system in response to receiving information from a sensor that indicates that the personal mobility vehicle is going downhill.
10. The system of claim 1 , wherein the controller is further configured to determine a frequency of application and cessation of application of the first brake force and the second brake force.
11. The system of claim 1 , wherein the controller is further configured to determine, based at least in part on data from a sensor, that the condition that affects the braking of the personal mobility vehicle comprises an environmental condition external to the personal mobility vehicle.
12. The system of claim 1 , wherein the controller is further configured to determine, based at least in part on data from a sensor, that the condition that affects the braking of the personal mobility vehicle comprises a level of wear of at least one component of the personal mobility vehicle.
13. The system of claim 1 , wherein the first brake lever is correlated with the front brake and the second brake lever is correlated with the rear brake and wherein the output mechanism is further configured to provide the indication to the rider of the personal mobility vehicle based on the determination by the controller of the first brake force to be applied to the front brake and the second brake force to be applied to the rear brake.
14. The system of claim 1 , wherein engaging the front brake by applying the first brake force and the rear brake by applying the second brake force comprises increasing the first brake force or the second brake force gradually over time as opposed to immediately applying the first brake force or the second brake force.
15. The system of claim 1 , wherein the predetermined distribution differential between the front brake and the rear brake comprises a distribution differential of 30% of maximum force for the rear brake and 10% of maximum force for the front brake.
16. A computer-implemented method, comprising, by a personal mobility vehicle including a controller and a front brake and a rear brake that, when engaged, reduce momentum of the personal mobility vehicle:
detecting that one of a first brake lever or a second lever of the personal mobility vehicle has received input;
receiving data from a weight sensor of the personal mobility vehicle, the sensor being configured to detect a condition affecting braking of the personal mobility vehicle, wherein the weight sensor is associated with a seating portion of the personal mobility vehicle;
determining a first brake force to be applied to the front brake and a second brake force to be applied to the rear brake based at least in part on the condition affecting the braking of the personal mobility vehicle, wherein the condition affecting the braking comprises a position and a weight of a rider of the personal mobility vehicle;
presenting, by an output mechanism of the personal mobility vehicle, an indication to the rider of the personal mobility vehicle of which of the first brake lever or the second brake lever to apply to reduce momentum of the personal mobility vehicle, the output mechanism being configured to present the indication based at least in part on a predetermined distribution differential between the first brake force and the second brake force; and
engaging, based at least in part on the indication, and in response to detecting the input from the first brake lever or the second lever, the front brake by applying the first brake force and the rear brake by applying the second brake force.
17. The computer-implemented method of claim 16 , further comprising:
receiving data from a sensor that indicates a lack of pressure on a rider-supporting portion of the personal mobility vehicle; and
disengaging the front brake and the rear brake in response to receiving the data from the sensor that indicates the lack of pressure on the rider-supporting portion of the personal mobility vehicle.
18. The computer-implemented method of claim 16 , wherein determining the first brake force to be applied to the front brake and the second brake force to be applied to the rear brake further comprises:
receiving information from a sensor that indicates a probability of the personal mobility vehicle tipping over; and
increasing the second brake force to be applied to the rear brake based at least in part on receiving the information from the sensor that indicates the probability of the personal mobility vehicle tipping over.
19. The computer-implemented method of claim 16 , wherein:
receiving the data from a sensor comprises receiving data about an object towards which the personal mobility vehicle is moving; and
determining the first brake force and the second brake force comprises making a determination to engage the front brake and the rear brake with a specified amount of force in response to receiving the data about the object towards which the personal mobility vehicle is moving.
20. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a controller, cause the controller to:
detect that one of a first brake lever or a second lever of a personal mobility vehicle has received input, wherein personal mobility vehicle includes a front brake and a rear brake that, when engaged, reduce momentum of the personal mobility vehicle;
receive data from a weight sensor of the personal mobility vehicle, the sensor being configured to detect a condition affecting braking of the personal mobility vehicle, wherein the weight sensor is associated with a seating portion of the personal mobility vehicle;
determine a first brake force to be applied to the front brake and a second brake force to be applied to the rear brake based at least in part on the condition affecting the braking of the personal mobility vehicle, wherein the condition affecting the braking comprises a position and a weight of a rider of the personal mobility vehicle;
present, by an output mechanism of the personal mobility vehicle, an indication to the rider of the personal mobility vehicle of which of the first brake lever or the second brake lever to apply to reduce momentum of the personal mobility vehicle, the output mechanism being configured to present the indication based at least in part on a predetermined distribution differential between the first brake force and the second brake force; and
engage, based at least in part on the indication, and in response to detecting the input from the first brake lever or the second lever, the front brake by applying the first brake force and the rear brake by applying the second brake force.