US20210188383A1 - Snowmobile control system - Google Patents
Snowmobile control system Download PDFInfo
- Publication number
- US20210188383A1 US20210188383A1 US16/723,806 US201916723806A US2021188383A1 US 20210188383 A1 US20210188383 A1 US 20210188383A1 US 201916723806 A US201916723806 A US 201916723806A US 2021188383 A1 US2021188383 A1 US 2021188383A1
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- United States
- Prior art keywords
- snowmobile
- warmer
- display
- block
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J33/00—Arrangements for warming riders specially adapted for cycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/20—Cycle computers as cycle accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
- B62J45/416—Physiological sensors, e.g. heart rate sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
- B62J45/42—Sensor arrangements; Mounting thereof characterised by mounting
- B62J45/422—Sensor arrangements; Mounting thereof characterised by mounting on the handlebar
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J50/00—Arrangements specially adapted for use on cycles not provided for in main groups B62J1/00 - B62J45/00
- B62J50/20—Information-providing devices
- B62J50/21—Information-providing devices intended to provide information to rider or passenger
- B62J50/22—Information-providing devices intended to provide information to rider or passenger electronic, e.g. displays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/01—Electric circuits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/16—Arrangement of switches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/26—Handlebar grips
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0236—Industrial applications for vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/01—Electric circuits
- B62J6/015—Electric circuits using electrical power not supplied by the cycle motor generator, e.g. using batteries or piezo elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/22—Warning or information lights
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M27/00—Propulsion devices for sledges or the like
- B62M27/02—Propulsion devices for sledges or the like power driven
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/005—Circuits arrangements for indicating a predetermined temperature
Definitions
- the present disclosure relates to a snowmobile, and more particularly to a control system for a snowmobile.
- a snowmobile is a motorized vehicle designed for winter travel and recreation, for example.
- a snowmobile may be operated on snow and ice, and does not require a road or trail.
- current snowmobiles are suitable for their intended use, they are subject to improvement.
- the operator's ability to customize the amount of heat generated by the warmers is extremely limited.
- some snowmobiles include display screens to convey information to the operator, existing screens are prone to false touches due to buildup of contaminants on the screen, such as snow and other debris. Existing displays are also subject to lengthy boot-up processes, which are an inconvenience for the operator.
- the present disclosure is directed to an improved snowmobile including the features and advantages described herein.
- the present disclosure includes a snowmobile including a first warmer configured to generate heat in response to electrical current driven therethrough, and a second warmer configured to generate heat in response to electrical current driven therethrough.
- a control module is configured to accept a first temperature input from an operator of the snowmobile indicating a desired first temperature of the first warmer, and direct sufficient electrical current to the first warmer to generate heat equal to the first temperature input.
- the control module is further configured to accept a second temperature input from the operator of the snowmobile indicating a desired second temperature of the second warmer, and direct sufficient electrical current to the second warmer to generate heat equal to the second temperature input.
- the present disclosure is further directed to a snowmobile having an engine, a display assembly including a display, a GPS receiver, a control module, and a power supply.
- the control module is configured to run an operating system of the display assembly, receive GPS signals from the GPS receiver, and identify a current location of the snowmobile based on the received GPS signals.
- the display assembly, the GPS receiver, and the control module are powered by the engine when the engine is on. Subsequent to shutdown of the engine the power supply powers the display assembly, the GPS receiver, and the control module for a period of time to keep the operating system running and keep the GPS receiver locked onto GPS signals without illuminating the display.
- the present disclosure is also directed to a control assembly mounted at handlebars of the snowmobile.
- a control module is included with the control assembly.
- the control module is configured to control headlights, accent lights, hand warmers, and a thumb warmer.
- a plurality of buttons are included with the control assembly.
- the plurality of buttons include a handlebar warmer control button, a high beam control button, a multimedia control button, and a menu control button.
- a first light emitting element is configured to illuminate to indicate whether the hand warmers and the thumb warmer are set at low, medium, or high heat intensity.
- a second light emitting element is configured to illuminate to indicate whether the high beams are active.
- the present disclosure is further directed to a display assembly for a snowmobile, the display assembly comprising a display surface bordered by a top bezel, a left bezel, a right bezel, and a bottom bezel having a height that is lower than each one of the top bezel, the left bezel, and the right bezel to facilitate removal of snow and other contaminants from the display surface.
- a bottom portion of the display surface is at the bottom bezel, and a main portion of the display surface is above the bottom portion.
- the display surface is configured to accept touch inputs.
- the bottom portion is less sensitive to touch inputs than the main portion.
- the present disclosure is also directed to a snowmobile including a headlight, an accent light, a display assembly, and a power source configured to power both the display assembly and the accent light when an engine of the snowmobile is off.
- FIG. 1 is a perspective view of an exemplary snowmobile in accordance with the present disclosure
- FIG. 2 is another perspective view of the snowmobile
- FIG. 3 is a front view of the snowmobile
- FIG. 4 is a rear view of the snowmobile
- FIG. 5 is a top view of the snowmobile
- FIG. 6 is an exploded view of the snowmobile
- FIG. 7A is a top view of a center console of the snowmobile
- FIG. 7B illustrates hand and thumb warmers on handlebars of the snowmobile
- FIG. 8A is a plan view of a left hand control panel mounted to the left handle bar of the snowmobile;
- FIG. 8B illustrates power to the left hand control panel and various other features of, and related to, the left hand control panel
- FIG. 9 illustrates a display assembly of the snowmobile
- FIG. 10A is an exemplary display screen of the display assembly
- FIG. 10B illustrates another exemplary display screen of the display assembly for hand and thumb warmer control.
- FIG. 11 is a perspective view of an undersurface of a hood assembly of the snowmobile
- FIG. 12 is a plan view illustrating main headlights and accent lights of the snowmobile
- FIG. 13 is a diagram of a power system of the snowmobile
- FIG. 14 is a diagram of power inputs to the main headlights and the accent lights
- FIG. 15A is a diagram of various power mode states of the snowmobile
- FIG. 15B is a continuation of FIG. 15A ;
- FIG. 16A is a first power stateflow diagram of the snowmobile
- FIG. 16B is a second power stateflow diagram of the snowmobile
- FIG. 16C is a third power stateflow diagram of the snowmobile
- FIG. 16D is a fourth power stateflow diagram of the snowmobile
- FIG. 16E is a fifth power stateflow diagram of the snowmobile
- FIG. 17 is a diagram of current flow to hand and thumb warmers of the snowmobile.
- FIG. 18A is a resistive control flowchart for the hand and thumb warmers.
- FIG. 18B is a continuation of FIG. 18A .
- the snowmobile 10 may be any suitable type of snowmobile, such as any suitable trail snowmobile, sport trail snowmobile, touring snowmobile, performance snowmobile, utility snowmobile (such as any snowmobile suitable for search and/or rescue, law enforcement, military operations, etc.), crossover snowmobile, mountain snowmobile, youth snowmobile, etc.
- the snowmobile 10 generally includes a front end 12 and a rear end 14 .
- a front suspension 16 At the front end 12 is a front suspension 16 .
- a rear suspension 18 At the rear end 14 is a rear suspension 18 .
- the front suspension 16 and the rear suspension 18 support a chassis 20 .
- the front suspension 16 includes shock absorbers 22 , each one of which is connected to a ski 24 .
- the shock absorbers 22 may be any dampening devices suitable for absorbing shock resulting from the skis 24 passing over uneven terrain.
- the skis 24 are steered in part by a suitable steering device, such as handlebars 26 .
- a belt or track 30 which is an endless or continuous belt or track 30 .
- Rotation of the track 30 propels the snowmobile 10 .
- the track 30 is circulated through a tunnel 32 defined at least in part by the chassis 20 .
- the tunnel 32 is tapered at the rear end 14 .
- Mounted at the rear end 14 is a flap 34 , which blocks snow and other debris from being “kicked-up” by the track 30 .
- a seat 40 for the operator of the snowmobile 10 .
- footrests 42 On both sides of the chassis 20 or tunnel 32 are footrests 42 , upon which the operator may rest his or her feet when seated on the seat 40 .
- the seat 40 is positioned to allow the driver to grasp the handlebars 26 for steering the snowmobile 10 .
- the handlebars 26 are mounted to a steering rod 28 , which protrudes out from within the center console 44 .
- a fuel cap 46 of a fuel tank 48 At the center console 44 is a fuel cap 46 of a fuel tank 48 .
- Any suitable accessory 36 (see FIG. 6 ) may be mounted to the chassis 20 behind the seat 40 .
- a hood assembly 50 which is mounted on top of a nose pan 68 .
- a front bumper 52 mounted to the hood assembly 50 and protruding from a forwardmost end thereof.
- the hood assembly 50 houses headlights 54 .
- An optional windshield 56 is connected to an uppermost portion of the hood assembly 50 .
- a display 58 is viewable by the operator when seated on the seat 40 .
- body panels 60 which are advantageously interchangeable.
- the snowmobile 10 further includes an engine assembly 70 .
- the engine assembly 70 generates power for driving the track 30 .
- the engine assembly 70 may include any suitable engine, such as a two-stroke engine, a four-stroke engine (with or without a turbocharger), an 850 cc engine, etc. Coupled to the engine assembly 70 is any suitable exhaust assembly 72 . Oil for the engine assembly 70 is stored in an oil tank assembly 74 , which may be arranged proximate to the seat 40 .
- the snowmobile 10 further includes one or more control modules 64 .
- a control module 64 A (see FIG. 8A ) may be included within a display assembly of the display 58
- a control module 64 B (see FIG. 9 ) may be included in a control assembly 66 mounted to the handlebars 26 .
- the term “control module” may be replaced with the term “circuit.”
- the term “control module” may refer to, be part of, or include processor hardware (shared, dedicated, or group) that executes code and memory hardware (shared, dedicated, or group) that stores code executed by the processor hardware. The code is configured to provide the features of the control module described herein.
- memory hardware is a subset of the term computer-readable medium.
- Non-limiting examples of a non-transitory computer-readable medium are nonvolatile memory devices (such as a flash memory device, an erasable programmable read-only memory device, or a mask read-only memory device), volatile memory devices (such as a static random access memory device or a dynamic random access memory device), magnetic storage media (such as an analog or digital magnetic tape or a hard disk drive), and optical storage media (such as a CD, a DVD, or a Blu-ray Disc).
- nonvolatile memory devices such as a flash memory device, an erasable programmable read-only memory device, or a mask read-only memory device
- volatile memory devices such as a static random access memory device or a dynamic random access memory device
- magnetic storage media such as an analog or digital magnetic tape or a hard disk drive
- optical storage media such as a CD, a DVD, or a Blu-ray Disc
- FIG. 7A is a cockpit view generally taken from the viewpoint of the operator looking towards the display 58 and the skis 24 .
- the operator When seated on the seat 40 , the operator will generally have his or her feet on the footrest 42 . In some instances, the operator may operate the snowmobile 10 in a standing position.
- Shin rests 62 are on opposite sides of the center console 44 , and provide convenient surfaces for the operator to rest his/her shins when operating the snowmobile 10 in a standing, or partially standing, position. Regardless of the operator's position, he or she has easy access to the handlebars 26 and a control assembly mounted thereto, such as left hand control assembly 66 mounted to a left one of the handlebars 26 .
- FIGS. 7B, 8A and 8B illustrate an exemplary left hand control assembly 66 in accordance with the present disclosure.
- the left hand control assembly 66 is illustrated and described as mounted to the left handle bar 26 , the left hand control assembly 66 may be configured to be mounted to, and mounted to, the right handle bar 26 .
- the left hand control assembly 66 includes a plurality of buttons and/or switches for controlling various functions of the snowmobile 10 . Any suitable number and configuration of buttons and/or switches may be included.
- the control assembly 66 is sealed to prevent outside contaminates from damaging the control assembly 66 and the contents thereof.
- the buttons may be covered with any watertight material, such as silicon, a suitable polymeric or rubber material, or any other suitable covering to enhance ease of actuation by the user.
- buttons for controlling exemplary operations of the snowmobile 10 include, but are not limited to, the following: handle bar warmers 410 A; high beams 410 B; infotainment control 410 C; return 410 D; and forward 410 E.
- handle bar warmers 410 A For snowmobiles including electric start functionality, an electric start button may also be included.
- infotainment control 410 C may also be included.
- return 410 D For snowmobiles including electric start functionality, an electric start button may also be included.
- a button for controlling electric shocks may also be included.
- buttons may include status indicators, such as LED indicators or any other suitable indicators.
- status indicators such as LED indicators or any other suitable indicators.
- three LED lights 412 may be included.
- the LED lights 412 may indicate whether the handle bar warmers are at a low, medium or high heat setting.
- Another LED light 412 may be included at the headlight button 410 , such as to indicate whether the headlights are on or off.
- the left hand control assembly 66 may include the control module 64 A, which functions as a vehicle control unit and controls various features of the snowmobile 10 .
- the control module 64 A may alternatively be arranged at any other suitable location about the snowmobile 10 . Operation of the control module 64 A to control various features of the snowmobile 10 is described herein, such as with respect to control of the handle bar warmers.
- the handle bars 26 may include any suitable hand warmers, such as a left hand warmer 434 A for the left handle bar 26 , a right hand warmer 434 B for the right handle bar 26 , and a thumb warmer 436 for the operator's right thumb.
- Any suitable handle bar warmers may be used, such as those disclosed in U.S. patent application Ser. No. 16/156,548 titled “Temperature Sensing and Control System and Method,” which was filed on Oct. 10, 2018 and is assigned to Polaris Industries Inc. of Medina, Minn. The entire disclosure of application Ser. No. 16/156,548 is incorporated by reference herein.
- any other suitable warmers may be included.
- the following warmers may also be included: brake handle warmer; storage compartment warmer; goggles warmer; garment warmer; windshield warmer; helmet shield warmer; seat warmer; etc.
- the description of the operation of the warmers 434 A, 434 B, 436 set forth herein also applies to the additional warmers listed in the preceding sentence, as well as to any other suitable warmers.
- the display 58 may be any suitable touch screen having any suitable size, such as 7 ′′ diagonally.
- the display 58 includes the control module 64 B, which controls various functions of the display 58 and the display assembly associated therewith.
- the control module 64 B may operate an operating system of the display 58 , may identify location of the snowmobile based on inputs from GPS receiver 440 (see FIG. 11 ), and may control any other suitable functions and features as well.
- surrounding the display 58 is an upper bezel 420 A, a left hand bezel 420 B, a right hand bezel 420 C, and a lower bezel 420 D.
- Each one of the upper bezel 420 A, the left hand bezel 420 B, and the right-hand bezel 420 C have a similar, or the same, height.
- the display 58 is recessed beneath each one of the upper bezel 420 A, the left hand bezel 420 B and the right hand bezel 420 C at a common distance.
- the lower bezel 420 D is not as tall as (or is more shallow than) each one of the upper bezel 420 A, the left hand bezel 420 B, and the right hand bezel 420 C. In some applications, the lower bezel 420 D may not be present at all.
- To the left and right of the lower bezel 420 D are corner bezels 420 E.
- the corner bezels 420 E are angled inward toward the lower bezel 420 D. Specifically, the left corner bezel 420 E extends from the left hand bezel 420 B to the lower bezel 420 D.
- the right corner bezel 420 E extends from right hand bezel 420 C to the lower bezel 420 D.
- the corner bezels 420 E may have the same height as the lower bezel 420 D, or may have the same height as the left and right hand bezels 420 B, 420 C. Alternatively, the corner bezels 420 E may gradually decrease in height from the left and right hand bezels 420 B, 420 C to the lower bezel 420 D.
- the relatively lower or shallow height of the lower bezel 420 D reduces the buildup of, and facilitates removal of, snow and other contaminates at the lower portion of the display 58 .
- current snowmobile displays are surrounded by a bezel that is uniform in height around the display.
- snow and other contaminates often build up on the lower bezel, and the height of existing bezels at the bottom portion thereof makes it difficult to wipe away or otherwise remove the snow and contaminates.
- the lower bezel 420 D of the present disclosure is relatively short and shallow (or not present at all) thereby making it easier to wipe snow and other contaminates off of the display 58 .
- the display 58 includes a lower portion 58 ′, which is adjacent to the lower bezel 420 D.
- the lower portion 58 ′ is the bottom fifth of the display 58 and extends about 0.25′′-0.50′′ from the lower bezel 420 D.
- the relatively shallow lower bezel 420 D helps to prevent or lessen buildup of snow and other contaminates at the lower portion 58 ′ of the display 58 , some buildup may occur. Buildup of snow and contaminates at the lower portion 58 ′ may result in the display 58 sensing false touch inputs.
- the lower portion 58 ′ is configured with a sensitivity level that is reduced as compared to the rest of the display 58 .
- the lower portion 58 ′ may always be provided with reduced sensitivity or the user may select a reduced sensitivity mode for the lower portion 58 ′ as conditions warrant.
- a control panel 150 which includes any suitable physical controls 152 for entering commands into the display 58 .
- the controls 152 may be any suitable buttons, knobs, switches, joysticks, etc.
- the controls 152 may include a pair of up and down switches on the right hand side thereof.
- the display 58 may be configured such that simultaneous actuation of the up and down switches, for example, places the display 58 in a “lock mode,” whereby touch inputs are not accepted, and thus the physical controls 152 must be used to enter inputs. This mode provides numerous advantages, particularly under conditions resulting in the buildup of snow or other contaminates on the display 58 , which may cause false inputs.
- FIG. 10A illustrates an exemplary display screen 430 of the display 58 .
- various features of the snowmobile 10 may be controlled by way of touch inputs, such as the hand warmers 434 A, 434 B and the thumb warmer 436 .
- the hand warmers 434 A, 434 B may be set to a temperature that is different from the temperature of the thumb warmer 436 .
- each one of the hand warmers 434 A, 434 B and the thumb warmer 436 may be independently activated or deactivated.
- individual drivers for each of the hand warmers 434 A, 434 B and the thumb warmer 436 may be included to permit the temperature of the left hand warmer 434 A to be set at a different temperature as compared to the right hand warmer 434 B.
- the ideal temperature for the hand warmers 434 A, 434 B and the thumb warmer 436 can be customized.
- the hand warmers 434 A, 434 B may be set such that at the lower setting the hand warmers 434 A, 434 B are warmed to 25° F., warmed to 35° F. at the medium setting, and warmed to 50° F. at the high setting.
- the temperature of the thumb warmer 436 may be set differently.
- the thumb warmer may be set such that at the lower setting, the thumb warmer 436 is heated to 30° F., is heated to 40° F.
- Hand warmer drivers and control of the hand warmers 434 A, 434 B and the thumb warmer 436 to generate the temperature requested by the user is described herein and illustrated in FIGS. 17, 18A, and 18B .
- FIG. 11 illustrates the undersurface of the hood assembly and the rear of the display 58 .
- Extending from the rear of the display 58 is a wire harness 144 .
- the wire harness 144 connects the display 58 and the control module 64 B thereof to various other components of the hood 50 , such as, but not limited, to the following: an antenna 168 ; a GPS receiver 440 ; a USB port 156 ; headlights 54 by way of headlight connector 144 A; and to the left hand control assembly 66 by way of connector 144 B.
- the left and right hand warmers 434 A, 434 B and the thumb warmer 436 may be connected directly to the left hand control assembly 66 or indirectly by way of the display 58 .
- the headlights 54 include main headlights 54 A and accent lights 54 B.
- the main headlights 54 A provide the majority of the forward illumination used to operate the snowmobile 10 at night or in low light conditions, and may also be activated during the day to make the snowmobile 10 more visible to others.
- the accent lights 54 B are relatively low power lights that generate less lumens as compared to the main headlights 54 A.
- the accent lights 54 B may be configured to always be illuminated when the snowmobile 10 is being used, as well as for a predetermined period thereafter, as described further herein.
- the accent lights 54 B improve the visibility of the snowmobile 10 , and enhance the aesthetics of the snowmobile as well. Operation of the headlights 54 A and 54 B will be described further herein.
- FIG. 13 illustrates an exemplary power system 450 of the snowmobile 10 .
- the power system 450 includes any suitable power source 452 .
- the power source 452 may be any suitable battery, such as any suitable lithium ion battery, or any suitable capacitor, such as a 7 F capacitor.
- the power source 452 is connected to the display 58 at PIN 3 (switched power) and PIN 4 (constant battery power). Between the power source 452 and the display 58 is any suitable switch 454 such as a keyswitch.
- the power source 452 is further connected to the main headlights 54 A and the accent lights 54 B.
- the power system 452 further includes a relay switch 456 . At an engine speed greater than 1,000 RPM, the relay switch 456 closes in order to power the main headlights 54 A and accent lights 54 B by chassis power.
- the power system 450 further powers fuel and oil pumps 458 and may include an optional regulator 460 . Any suitable regulator may be used, such as a PBR (power boost regulator).
- PBR power boost regulator
- FIG. 14 illustrates power supply to the main headlights 54 A (including high beams 470 A and low beams 470 B) and the accent lights 54 B.
- the high beams 470 A and the low beams 470 B are connected to ground at PIN 1 480 .
- Main headlight power for the low beams 470 B is provided by way of PIN 2 at 482 .
- PIN 2 powers both the low beams 470 B and the accent light 54 B.
- the accent light 54 B is powered at full power, such as at about 330-360 milliamps.
- Power for the high beams 470 A is provided by way of PIN 3 at 484 (100 mA switch to power from left hand control 66 ).
- Switch 472 is arranged between PIN 3 and the high beams 470 A.
- Power to the accent lights 54 B may be provided by way of PIN 4 at 486 , which powers the accent lights 54 B by way of the display 58 when the engine is off at a relatively low intensity, such as at about 250 milliamps, as compared to when powered by way of PIN 2 .
- Power can be directed to the high beams 470 A, the low beams 470 B, and the accent light 54 B in any other suitable manner as well, such as by way of any suitable relay.
- FIGS. 15A and 15B illustrate exemplary power mode states of the snowmobile 10 , and particularly the left hand control assembly 66 thereof, at reference numeral 510 .
- the power mode states include the following: Mode 0 (no power state); Mode 1 (on state); Mode 2 (engine off, full power state); Mode 3 (engine off, low power state); and Mode 4 (on state, no chassis power).
- the engine 70 is on and there is critical power (such as at about 14V for example) and chassis power (such as at about 14.4V, for example), but no switched power.
- expected functionality includes: CAN communication; headlight control; reverse drive of the snowmobile 10 ; and control of the heaters, such as the hand warmers 434 A, 434 B and thumb warmer 436 or any other suitable heaters. No push-to-start functionality is available as there is no battery in the system.
- Mode 2 battery power is available if the snowmobile 10 includes a battery. No critical power or chassis power is available in Mode 2 , and thus Mode 2 is only available when the snowmobile 10 includes a battery.
- Expected functionality in Mode 2 includes CAN communication and push-to-start if the snowmobile 10 is outfitted with such functionality. The following functionality is not available in Mode 2 : headlight control, reverse, and control of heaters, such as hand warmers 434 A, 434 B and thumb warmer 436 .
- Mode 2 permits communication with the instrumentation.
- Mode 3 battery power is available if the snowmobile 10 includes a battery. No critical power or chassis power is available in Mode 3 , and thus Mode 3 is only available when the snowmobile 10 includes a battery.
- the left hand control assembly 66 will wake-up to Mode 2 in response to a button push, receipt of a CAN bus signal, or critical power.
- the following functionality is not available: CAN communication, headlight control, reverse operation, push-to-start (when the snowmobile is outfitted with such functionality), control of heaters, such as hand warmers 434 A, 434 B and thumb warmer 436 .
- Mode 3 reduces current draw on the battery when the user forgets to turn the key off. Also, Mode 3 is used to wake up from the lower power state.
- Mode 4 engine on, no chassis power
- battery power is available and critical power is available, such as at about 14V for example.
- Expected functionality includes: CAN communication, headlight control, and reverse operation. Push-to-start is not available (if included with the snowmobile 10 ), and there is no control of heaters.
- Mode 4 the engine is running, but chassis power is either disabled or not yet turned on by a power boosting regulator (PBR).
- PBR power boosting regulator
- the snowmobile 10 is placed in the different power mode states, and the control logic of FIGS. 15A and 15B is executed by, the control module 64 A of the left hand control 66 .
- the power mode state of the snowmobile 10 is mode 0 , which is a no power state. From block 512 , the control logic proceeds to block 514 .
- the control module 64 A checks to determine whether the ignition switch of the snowmobile 10 has been activated and whether a battery (such as the power source 452 ) is present. If the ignition switch has not been activated and/or no battery is present, the control logic proceeds to block 516 .
- the control module 64 A determines whether there is critical power and whether the engine is on. If the engine is off and/or critical power is not present, the control logic returns to block 512 and the snowmobile remains in the no power state of mode 0 .
- control module 64 A determines that the ignition switch is on and a battery is present, the control logic proceeds to block 520 . Also, if at block 516 the control module 64 A determines that critical power is present and the engine is on, the control logic proceeds to block 520 . At block 520 , the snowmobile 10 is in mode 1 , which is the on state.
- the control logic proceeds to block 522 .
- the control module 64 A determines whether critical power is present. If critical power is present, the control logic proceeds to block 524 .
- the control module 64 A determines whether chassis power 524 is present. If chassis power is present, the control module 64 A returns block 520 , which is the full power on state of mode 1 . If at block 524 the control module 64 A determines that there is no chassis power, the control logic proceeds to block 526 , where the control module 64 A operates the snowmobile 10 in mode 4 , which is an on state without chassis power. From block 526 , the control logic returns to block 522 .
- control module 64 A determines that critical power is not present, the control logic proceeds to block 528 .
- the control module 64 A checks for switch battery power. If no battery power is detected at block 528 , the control logic proceeds to block 512 where the control module 64 A places the snowmobile 10 in power mode state 0 , which is the no power state. If at block 528 the control module 64 A detects battery power, the control logic proceeds to block 530 . At block 530 , the control module 64 A places the snowmobile 10 in power mode 2 , which is an engine off, full power state.
- control logic proceeds to block 532 .
- the control module 64 A checks for battery power. If no battery power is detected, the control logic to block 512 , which is the no power state of mode 0 . If at block 532 battery power is detected, the control logic proceeds to block 534 .
- the control module 64 A checks for critical power. If critical power is present, the control logic returns to the on state of power mode state 1 .
- the control logic proceeds to block 536 of FIG. 15B .
- the control module 64 A checks for button pushes by the operator, such as actuation of the buttons on the left hand control 66 , touch inputs to the display 58 , or actuation of the physical controls 152 adjacent to the display 58 . If button pushes are detected, the control logic returns block 530 and the control module 64 A keeps the snowmobile 10 in the engine off, full power state. If at block 536 no button pushes are detected, the control logic proceeds to block 538 .
- the control module 64 A checks for a CAN message from an IC. If a CAN message is detected, the control logic returns to block 530 where the engine off, full power state is maintained. If at block 538 no CAN messages are detected, the control logic proceeds to block 540 .
- the control module 64 A determines whether a state change timer of the control module 64 A has elapsed. If the state change timer has not yet elapsed, the control logic returns to block 530 where the snowmobile is maintained in the engine off, full power state. If the state change timer has elapsed, the control logic proceeds to block 542 .
- the control module 64 A places the snowmobile 10 in mode 3 , which is an engine off, full power state. From block 542 the control logic proceeds to block 544 , where the control module 64 A checks for switch battery power. If no such battery power is detected, the control logic returns to block 512 where the control module 64 A places the snowmobile 10 in the no power state. If at block 544 battery power is detected, the control logic proceeds to block 546 . At block 546 , the control module 64 A determines whether critical power is present. If critical power is present, the control logic returns to block 530 and the control module 64 A places the snowmobile 10 in the engine off, full power state.
- control module 64 A determines that critical power is not present, the control logic proceeds to block 548 where the control module checks for button pushes, such as actuation of the buttons on the left hand control assembly 66 , touch inputs to the display 58 , or actuation of the physical controls 152 adjacent to the display 58 . If one or more button pushes are detected, the control logic returns to block 530 where the control module 64 A places the snowmobile in the engine off, full power state. If at block 548 no button pushes are detected, the control logic proceeds to block 550 . At block 550 , the control module 64 A checks for CAN messages from the IC.
- button pushes such as actuation of the buttons on the left hand control assembly 66 , touch inputs to the display 58 , or actuation of the physical controls 152 adjacent to the display 58 . If one or more button pushes are detected, the control logic returns to block 530 where the control module 64 A places the snowmobile in the engine off, full power state. If at block 5
- control module 64 A maintains the snowmobile 10 in the engine off, low power state of mode 3 . If at block 550 a CAN message is detected, the control logic returns to block 530 where the control module 64 A maintains the snowmobile 10 in the engine off, full power state of mode 2 .
- FIG. 16A illustrates an exemplary full power state flow diagram 610 for the display 58 , the logic of which is carried out by the control module 64 A, for example.
- the display 58 is in the quiescent current state.
- the quiescent current state is the lowest power state in which everything is off except GPS. Thus the screen is off, the backlight is off, processors are booted down, GPS is off, and the accent lights 54 B are off.
- the control module 64 A determines whether PIN 4 is powered. If PIN 4 is not powered, the control module 64 A proceeds to the power off state in block 624 . If PIN 4 is powered, the control module 64 A proceeds from block 622 to block 626 . At block 626 , the control module 64 A determines whether PIN 3 is powered. If PIN 3 is not powered, the control logic returns to block 620 where the control module 64 A returns the display 58 to the quiescent current state 620 . If at block 626 , PIN 3 is powered, the control module 64 A determines whether PIN 3 has a rising edge.
- control logic proceeds to block 632 , where the control module 64 A places the display 58 in a full power state. In the full power state the display 58 is on, the backlight is on, processors are on, GPS is locked, and the accent light 54 B is on. If at block 628 no PIN 3 rising edge is detected, the control logic proceeds to block 630 .
- the control module 64 A checks for CAN traffic. If CAN traffic is detected, the control module 64 A proceeds to block 630 and places the display 58 10 in a full power state. If at block 630 no CAN traffic is detected, the control logic returns to block 620 where the control module 64 A maintains the quiescent current state.
- FIG. 16B illustrates another power state flow diagram in accordance with the present disclosure at reference numeral 650 .
- the control logic starts at block 652 with the start of CAN transmission.
- the control module 64 A activates the accent lights 54 B, and at block 656 the control module 64 A places the display 58 in the full power state.
- the control module 64 A checks whether the engine 70 is running. If the engine 70 is running, the control logic proceeds to block 660 where the control module 64 A resets a power timer, and the display 58 remains in the full power state in block 656 . If at block 658 the control module 64 A determines that the engine is not running, the control logic proceeds to block 662 , where the control module 64 A determines whether PIN 4 is powered.
- the increment shutdown timer is designated to keep track of the time the display has been unpowered before imitating a software shutdown at 850 of FIG. 16E .
- the idle power state is a standby/idle power state designated for reducing load on the battery while keeping GPS locked and the processor alive.
- the display screen is off, the backlight is off, processors remain booted, GPS remains locked, the display 58 responds to display and external inputs, and the accent light 54 B is off.
- control logic proceeds to block 668 , where the control module 64 A determines whether PIN 3 is powered. If PIN 3 is not powered, control module 64 A initiates an increment power timer at block 670 . Upon expiration of the increment power timer 670 , the control logic proceeds to block 672 , where in the control module 64 A places the display 58 in the play dead state.
- the increment power timer is designated to keep track of time the display 58 has been in a certain state of the power management strategy.
- the play dead state is a standby/idle power state designated for reducing load on the battery while keeping GPS locked and the processor alive.
- the screen of the display 58 is off, the backlight is off, processors remain booted, GPS is locked, display and external inputs are not responded to, and the accent lights 54 B are off.
- control logic proceeds to block 674 where the control module 64 A resets a shutdown timer. Once the shutdown timer has been reset, the control logic proceeds to block 676 where the control module 64 A checks for inputs to the display 58 , such as touch inputs or actuation of the physical controls 152 adjacent to the display 58 . If display inputs are detected, the control module 64 A resets the power timer at block 660 and the full power state is maintained. If at block 676 no display inputs are detected, the control module 64 A checks for external inputs at block 678 . If external inputs are detected, the control module 64 A resets the power timer at block 660 and the full power state is maintained.
- control logic proceeds to block 680 , where the control module 64 A activates the increment power timer.
- the logic proceeds to block 684 where the control module 64 A places the display 58 in the idle power state. If the power timer is not greater than the full power time, then the control logic returns to block 656 , where the full power state is maintained.
- the full power time is a calibratable parameter designated as the time threshold the display 58 stays in full power mode without display button presses, hand control button presses, and engine not running.
- the full power time is stored in memory of the control module 64 A or 64 B, has a default of 30 seconds, a range of 6 hours, and a resolution of 5 seconds.
- FIG. 16C another power state flow diagram is illustrated at reference numeral 710 .
- the control module 64 A turns off the accent light 54 B at block 714 and places the display 58 in the idle power state at block 716 .
- the control logic proceeds to block 718 , where the control module 64 A determines whether the engine 70 is running. If the engine 70 is running, the control logic proceeds to block 748 , where the control module 64 A resets the power timer and places the display 58 in the full power state at block 750 .
- control logic proceeds to block 720 , where the control module 64 A determines whether PIN 4 is powered. If PIN 4 is not powered, the control logic proceeds to block 722 , where the control module 64 A activates an increment shutdown timer. At block 724 , the control module 64 A checks whether the shutdown timer is greater than the perc. time.
- the perc. time is a calibratable parameter designated as the time threshold the display 58 waits until initiating software shutdown at 850 of FIG. 16E .
- the perc. time has a default of 500 ms, a range of 10 seconds, and a resolution of 10 ms.
- the control logic returns to block 716 , where the display 58 is maintained in the idle power state. If at block 724 the shutdown timer is not greater than the perc. time, the control module 64 A places the display 58 in the power off state at block 726 . If at block 720 PIN 4 is powered, the control module 64 A checks whether PIN 3 is powered at block 730 . If PIN 3 is not powered, the control module 64 A activates the increment power timer at block 732 , and then places the display 58 in the play dead state at block 734 .
- the control module 64 A If at block 730 PIN 3 is powered, the control module 64 A resets the shutdown timer at block 740 . From block 740 , the control module 64 A checks for display inputs at block 742 . If display inputs are detected, the control module 64 A resets the power timer at block 748 , and places the display 58 in the full power state at block 750 . If at block 742 no display inputs are detected, the control module 64 A checks for external inputs at block 744 . If external inputs are detected, the control module 64 A resets the power timer at block 748 , and places the display 58 in the full power state at block 750 . If no external inputs are detected, the control module 64 A activates the increment power timer at block 746 .
- the control module 64 A places the display 58 in the power off state at block 726 . If the power timer is not greater than the idle power time, then the control logic proceeds to block 716 , and the control module 64 A maintains the display 58 in the idle power state.
- the idle power time is a calibratable parameter designated as the time threshold the display 58 stays in idle power mode without a display input, hand control input, and engine not running.
- the idle power time is stored in memory of the control module 64 A or 64 B, has a default of 120 seconds, has a range of 6 hours, and a resolution of 10 seconds.
- FIG. 16D illustrates another exemplary power state flow diagram in accordance with the present disclosure at reference numeral 810 .
- the control module 64 A powers off the accent lights at block 814 and places the display 58 in the play dead state at block 816 .
- the control module 64 A checks for power at PIN 4 . If PIN 4 is not powered, the control module 64 A activates the increment shutdown timer at block 820 .
- the control module 64 A checks whether the shutdown timer is greater than the perc. time. If the shutdown timer is not greater than the perc. time, the control module 64 A maintains the display 58 in the play dead state at block 816 . If the shutdown timer is greater than the perc. time, the control module 64 A places the display 58 in the power off state at block 824 .
- the control module 64 A checks whether the battery voltage is greater than a predetermined battery voltage threshold at block 830 .
- the battery voltage threshold is a calibratable parameter designated as the threshold where the display 58 decides there is not sufficient charge in the battery and initiates a software shutdown at 850 of FIG. 16E .
- the battery voltage threshold has a default of 8V, a range of 0-14V, and a resolution of 0.1V. If the battery voltage is not greater than the predetermined threshold, the control module 64 A places the display 58 in the power off state at block 824 . If the battery voltage is greater than the predetermined threshold, the control module 64 A checks whether PIN 3 is powered at block 832 .
- the control module 64 A If PIN 3 is powered, the control module 64 A resets the power time at block 834 , and places the display 58 in the full power state at block 836 . If PIN 3 is not powered, the control module 64 A activates the increment power timer at block 840 , and at block 842 the control module 64 A checks whether the power timer is greater than the play dead time. If the power timer is greater than the play dead time, the control module 64 A places the display 58 in the power off state at block 844 . If the power timer is not greater than the play dead time, the control module 64 A maintains the display 58 in the play dead state at block 816 .
- the play dead time is a calibratable parameter designated as the time threshold the display 58 stays in play dead mode (key switch off, engine not running).
- the play dead time is stored in the control module 64 A or 64 B, has a default time of 120 seconds, a range of 6 hours, and a resolution of 10 seconds.
- FIG. 16E illustrates another power state flow diagram in accordance with the present disclosure at reference numeral 850 for the software shutdown procedure.
- the control module 64 A initiates the software shutdown procedure, and places the display 58 in the power off state at block 854 .
- the control module 64 A checks whether PIN 4 is powered. If PIN 4 is not powered, the control module 64 A maintains the display 58 in the power off state at block 854 . If PIN 4 is powered, the control module 64 A places the display 58 in the quiescent current state.
- the circuitry of FIG. 17 may be included with the snowmobile 10 at any suitable location.
- the circuitry of FIG. 17 may be included within the left hand control assembly 66 on a printed circuit board thereof.
- the printed circuit board may also include the control module 64 A and a CAN transceiver.
- FIG. 17 illustrates current flow to the right hand warmer 434 B, the left hand warmer 434 A and the thumb warmer 436 of the handle bars 26 .
- power is provided by way of chassis power 920 .
- a current amplifier is included at reference numeral 922 and one or more high side drivers are included at reference numeral 924 . For each warmer (or group of warmers), over which individual temperature control is desired, a separate high side driver 924 is included.
- one high side driver 924 is included for the hand warmers 434 A, 434 B.
- separate high side drivers 924 for the hand warmers 434 A, 434 B are included.
- another high side driver 924 is included for the thumb warmer 436 .
- any suitable number of additional high side drivers 924 may be included to individually control the temperature of any other warmers, such as, but not limited to, the following warmers: brake handle warmer; storage compartment warmer; goggles warmer; garment warmer; windshield warmer; helmet shield warmer; seat warmer; etc.
- the high side driver 924 is driven by pulse width modulation (PWM), which advantageously allows for customized temperature settings of the left hand warmer 434 A, the right hand warmer 434 B, and the thumb warmer 436 by the operator as explained above, where the user is able to set preferred temperatures for the low, medium and high temperature settings of the hand warmers 434 A, 434 B and the thumb warmer 436 .
- PWM pulse width modulation
- FIGS. 18A and 18B illustrate exemplary resistive control diagrams for controlling the left hand warmer 434 A, the right hand warmer 434 B and the thumb warmer 436 .
- temperature of the hand warmers 434 A, 434 B and the thumb warmer 436 is set by the operator, such as by way of the display screen 432 of FIG. 10B as described above.
- the temperature of the left hand warmer 434 A, the right hand warmer 434 B and the thumb warmer 436 is determined at block 1030 based on numerous inputs, such as the following: temperature coefficient of resistance (a) 1014 , reference resistance (Rref) 1016 ; and reference temperature (Tref) 1018 .
- the temperature is also determined based on heater resistance including: measured voltage 1020 ; measured current 1022 ; internal resistance 1024 ; and wire resistance 1026 .
- heater resistance R measured voltage (V) of block 1020 divided by measured current (I) of block 1022 .
- heater temperature equals (R/Rref ⁇ 1/ ⁇ +Tref). Both the set temperature 1012 and the heater temperature calculated at block 1030 are input to block 1048 .
- the difference node for command value—measured is determined to arrive at the control error “e”.
- peak coefficient “P” is determined as follows kP*e.
- an integrator is determined as follows ⁇ ki*e dt).
- the control module 64 A determines whether the integrator is greater than maximum duty. If the integrator is greater than maximum duty, then the control module 64 A sets the integrator to equal maximum duty at block 1060 . From block 1060 , the control logic proceeds to block 1064 , where the duty is determined as the sum of peak coefficient (P) and integrator (I).
- the control module 64 A checks whether the integrator is less than 0 at block 1056 . If the integrator is less than 0, then at 1062 , the integrator is set to 0. If the integrator is not less than 0, then the control logic proceeds to block 1064 . From block 1064 , the control logic proceeds to block 1044 of FIG. 18A . At block 1044 , the control module 64 A determines whether duty is greater than limit duty.
- Limit duty is determined at blocks 1034 , 1040 , and 1042 .
- the control module 64 A determines whether the measured current 1022 is greater than a predetermined current limit. If the measured current 1022 is not greater than the current limit, then at block 1042 the limit duty is set to equal a predetermined maximum duty. If at block 1034 the measured current 1022 is greater than the current limit, then at block 1040 the control module 64 A sets the limit duty as follows: limit duty equals (current limit*maximum duty)/current.
- the control module 64 A determines whether the duty from block 1064 is greater than the limit duty from blocks 1040 , 1042 . If at block 1044 the duty is greater than the limit duty, at block 1046 , the duty is set to equal the limit duty, and the control logic proceeds to block 1070 , and the duty is output to PWM control, which is input to the high side driver 924 of FIG. 17 for driving the right hand warmer 434 B, the left hand warmer 434 A and/or the thumb warmer 436 . If at block 1044 , the duty is not greater than the limit duty, at block 1066 the control module 64 A determines whether the duty is less than the minimum duty.
- the duty is set to equal the minimum duty, which is output to PWM control at block 1070 . If at block 1066 the duty is not less than the minimum duty, then the duty is output to PWM control at block 1070 .
- Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
- first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
- Spatially relative terms such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the example term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
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Abstract
Description
- The present disclosure relates to a snowmobile, and more particularly to a control system for a snowmobile.
- This section provides background information related to the present disclosure, which is not necessarily prior art.
- A snowmobile is a motorized vehicle designed for winter travel and recreation, for example. A snowmobile may be operated on snow and ice, and does not require a road or trail. While current snowmobiles are suitable for their intended use, they are subject to improvement. For example, while some snowmobiles include hand and thumb warmers, the operator's ability to customize the amount of heat generated by the warmers is extremely limited. Furthermore, while some snowmobiles include display screens to convey information to the operator, existing screens are prone to false touches due to buildup of contaminants on the screen, such as snow and other debris. Existing displays are also subject to lengthy boot-up processes, which are an inconvenience for the operator. The present disclosure is directed to an improved snowmobile including the features and advantages described herein.
- This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.
- The present disclosure includes a snowmobile including a first warmer configured to generate heat in response to electrical current driven therethrough, and a second warmer configured to generate heat in response to electrical current driven therethrough. A control module is configured to accept a first temperature input from an operator of the snowmobile indicating a desired first temperature of the first warmer, and direct sufficient electrical current to the first warmer to generate heat equal to the first temperature input. The control module is further configured to accept a second temperature input from the operator of the snowmobile indicating a desired second temperature of the second warmer, and direct sufficient electrical current to the second warmer to generate heat equal to the second temperature input.
- The present disclosure is further directed to a snowmobile having an engine, a display assembly including a display, a GPS receiver, a control module, and a power supply. The control module is configured to run an operating system of the display assembly, receive GPS signals from the GPS receiver, and identify a current location of the snowmobile based on the received GPS signals. The display assembly, the GPS receiver, and the control module are powered by the engine when the engine is on. Subsequent to shutdown of the engine the power supply powers the display assembly, the GPS receiver, and the control module for a period of time to keep the operating system running and keep the GPS receiver locked onto GPS signals without illuminating the display.
- The present disclosure is also directed to a control assembly mounted at handlebars of the snowmobile. A control module is included with the control assembly. The control module is configured to control headlights, accent lights, hand warmers, and a thumb warmer. A plurality of buttons are included with the control assembly. The plurality of buttons include a handlebar warmer control button, a high beam control button, a multimedia control button, and a menu control button. A first light emitting element is configured to illuminate to indicate whether the hand warmers and the thumb warmer are set at low, medium, or high heat intensity. A second light emitting element is configured to illuminate to indicate whether the high beams are active.
- The present disclosure is further directed to a display assembly for a snowmobile, the display assembly comprising a display surface bordered by a top bezel, a left bezel, a right bezel, and a bottom bezel having a height that is lower than each one of the top bezel, the left bezel, and the right bezel to facilitate removal of snow and other contaminants from the display surface. A bottom portion of the display surface is at the bottom bezel, and a main portion of the display surface is above the bottom portion. The display surface is configured to accept touch inputs. The bottom portion is less sensitive to touch inputs than the main portion.
- The present disclosure is also directed to a snowmobile including a headlight, an accent light, a display assembly, and a power source configured to power both the display assembly and the accent light when an engine of the snowmobile is off.
- Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
- The drawings described herein are for illustrative purposes only of select embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
-
FIG. 1 is a perspective view of an exemplary snowmobile in accordance with the present disclosure; -
FIG. 2 is another perspective view of the snowmobile; -
FIG. 3 is a front view of the snowmobile; -
FIG. 4 is a rear view of the snowmobile; -
FIG. 5 is a top view of the snowmobile; -
FIG. 6 is an exploded view of the snowmobile; -
FIG. 7A is a top view of a center console of the snowmobile; -
FIG. 7B illustrates hand and thumb warmers on handlebars of the snowmobile; -
FIG. 8A is a plan view of a left hand control panel mounted to the left handle bar of the snowmobile; -
FIG. 8B illustrates power to the left hand control panel and various other features of, and related to, the left hand control panel; -
FIG. 9 illustrates a display assembly of the snowmobile; -
FIG. 10A is an exemplary display screen of the display assembly; -
FIG. 10B illustrates another exemplary display screen of the display assembly for hand and thumb warmer control. -
FIG. 11 is a perspective view of an undersurface of a hood assembly of the snowmobile; -
FIG. 12 is a plan view illustrating main headlights and accent lights of the snowmobile; -
FIG. 13 is a diagram of a power system of the snowmobile; -
FIG. 14 is a diagram of power inputs to the main headlights and the accent lights; -
FIG. 15A is a diagram of various power mode states of the snowmobile; -
FIG. 15B is a continuation ofFIG. 15A ; -
FIG. 16A is a first power stateflow diagram of the snowmobile; -
FIG. 16B is a second power stateflow diagram of the snowmobile; -
FIG. 16C is a third power stateflow diagram of the snowmobile; -
FIG. 16D is a fourth power stateflow diagram of the snowmobile; -
FIG. 16E is a fifth power stateflow diagram of the snowmobile; -
FIG. 17 is a diagram of current flow to hand and thumb warmers of the snowmobile; -
FIG. 18A is a resistive control flowchart for the hand and thumb warmers; and -
FIG. 18B is a continuation ofFIG. 18A . - Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
- Example embodiments will now be described more fully with reference to the accompanying drawings.
- With initial reference to
FIGS. 1-6 , an exemplary vehicle in accordance with the present disclosure is illustrated. Although the vehicle is illustrated as asnowmobile 10, numerous aspects of the present disclosure may be included with any other suitable vehicle as well. Thesnowmobile 10 may be any suitable type of snowmobile, such as any suitable trail snowmobile, sport trail snowmobile, touring snowmobile, performance snowmobile, utility snowmobile (such as any snowmobile suitable for search and/or rescue, law enforcement, military operations, etc.), crossover snowmobile, mountain snowmobile, youth snowmobile, etc. - The
snowmobile 10 generally includes afront end 12 and arear end 14. At thefront end 12 is afront suspension 16. At therear end 14 is arear suspension 18. Thefront suspension 16 and therear suspension 18 support achassis 20. - The
front suspension 16 includesshock absorbers 22, each one of which is connected to aski 24. Theshock absorbers 22 may be any dampening devices suitable for absorbing shock resulting from theskis 24 passing over uneven terrain. Theskis 24 are steered in part by a suitable steering device, such ashandlebars 26. - Coupled to the
rear suspension 18 is a belt ortrack 30, which is an endless or continuous belt ortrack 30. Rotation of thetrack 30 propels thesnowmobile 10. Thetrack 30 is circulated through atunnel 32 defined at least in part by thechassis 20. Thetunnel 32 is tapered at therear end 14. Mounted at therear end 14 is aflap 34, which blocks snow and other debris from being “kicked-up” by thetrack 30. - Mounted to the
chassis 20 and atop thetunnel 32 is aseat 40 for the operator of thesnowmobile 10. On both sides of thechassis 20 ortunnel 32 arefootrests 42, upon which the operator may rest his or her feet when seated on theseat 40. Theseat 40 is positioned to allow the driver to grasp thehandlebars 26 for steering thesnowmobile 10. Thehandlebars 26 are mounted to asteering rod 28, which protrudes out from within thecenter console 44. At thecenter console 44 is afuel cap 46 of afuel tank 48. Any suitable accessory 36 (seeFIG. 6 ) may be mounted to thechassis 20 behind theseat 40. - At the
front end 12 of thesnowmobile 10 is ahood assembly 50, which is mounted on top of anose pan 68. Mounted to thehood assembly 50 and protruding from a forwardmost end thereof is afront bumper 52. Thehood assembly 50houses headlights 54. Anoptional windshield 56 is connected to an uppermost portion of thehood assembly 50. Associated with thehood assembly 50 is adisplay 58 viewable by the operator when seated on theseat 40. Mounted to opposite sides of the hood assembly arebody panels 60, which are advantageously interchangeable. - With particular reference to
FIG. 6 , thesnowmobile 10 further includes anengine assembly 70. Theengine assembly 70 generates power for driving thetrack 30. Theengine assembly 70 may include any suitable engine, such as a two-stroke engine, a four-stroke engine (with or without a turbocharger), an 850 cc engine, etc. Coupled to theengine assembly 70 is anysuitable exhaust assembly 72. Oil for theengine assembly 70 is stored in anoil tank assembly 74, which may be arranged proximate to theseat 40. - The
snowmobile 10 further includes one ormore control modules 64. For example, acontrol module 64A (seeFIG. 8A ) may be included within a display assembly of thedisplay 58, and acontrol module 64B (seeFIG. 9 ) may be included in acontrol assembly 66 mounted to the handlebars 26. The term “control module” may be replaced with the term “circuit.” The term “control module” may refer to, be part of, or include processor hardware (shared, dedicated, or group) that executes code and memory hardware (shared, dedicated, or group) that stores code executed by the processor hardware. The code is configured to provide the features of the control module described herein. The term memory hardware is a subset of the term computer-readable medium. The term computer-readable medium, as used herein, does not encompass transitory electrical or electromagnetic signals propagating through a medium (such as on a carrier wave). The term computer-readable medium is therefore considered tangible and non-transitory. Non-limiting examples of a non-transitory computer-readable medium are nonvolatile memory devices (such as a flash memory device, an erasable programmable read-only memory device, or a mask read-only memory device), volatile memory devices (such as a static random access memory device or a dynamic random access memory device), magnetic storage media (such as an analog or digital magnetic tape or a hard disk drive), and optical storage media (such as a CD, a DVD, or a Blu-ray Disc). -
FIG. 7A is a cockpit view generally taken from the viewpoint of the operator looking towards thedisplay 58 and theskis 24. When seated on theseat 40, the operator will generally have his or her feet on thefootrest 42. In some instances, the operator may operate thesnowmobile 10 in a standing position. Shin rests 62 (seeFIGS. 7A and 7B , for example) are on opposite sides of thecenter console 44, and provide convenient surfaces for the operator to rest his/her shins when operating thesnowmobile 10 in a standing, or partially standing, position. Regardless of the operator's position, he or she has easy access to thehandlebars 26 and a control assembly mounted thereto, such as lefthand control assembly 66 mounted to a left one of the handlebars 26. -
FIGS. 7B, 8A and 8B illustrate an exemplary lefthand control assembly 66 in accordance with the present disclosure. Although the lefthand control assembly 66 is illustrated and described as mounted to theleft handle bar 26, the lefthand control assembly 66 may be configured to be mounted to, and mounted to, theright handle bar 26. The lefthand control assembly 66 includes a plurality of buttons and/or switches for controlling various functions of thesnowmobile 10. Any suitable number and configuration of buttons and/or switches may be included. Thecontrol assembly 66 is sealed to prevent outside contaminates from damaging thecontrol assembly 66 and the contents thereof. The buttons may be covered with any watertight material, such as silicon, a suitable polymeric or rubber material, or any other suitable covering to enhance ease of actuation by the user. Exemplary buttons for controlling exemplary operations of thesnowmobile 10 include, but are not limited to, the following: handlebar warmers 410A;high beams 410B; infotainment control 410C; return 410D; and forward 410E. For snowmobiles including electric start functionality, an electric start button may also be included. A button for controlling electric shocks may also be included. - One or more of the buttons may include status indicators, such as LED indicators or any other suitable indicators. For example and with respect to the handle bar
warmer button 410A, threeLED lights 412 may be included. The LED lights 412 may indicate whether the handle bar warmers are at a low, medium or high heat setting. AnotherLED light 412 may be included at the headlight button 410, such as to indicate whether the headlights are on or off. - As illustrated in
FIG. 8A , the lefthand control assembly 66 may include thecontrol module 64A, which functions as a vehicle control unit and controls various features of thesnowmobile 10. Thecontrol module 64A may alternatively be arranged at any other suitable location about thesnowmobile 10. Operation of thecontrol module 64A to control various features of thesnowmobile 10 is described herein, such as with respect to control of the handle bar warmers. - With particular reference to
FIG. 7B , the handle bars 26 may include any suitable hand warmers, such as a left hand warmer 434A for theleft handle bar 26, a right hand warmer 434B for theright handle bar 26, and a thumb warmer 436 for the operator's right thumb. Any suitable handle bar warmers may be used, such as those disclosed in U.S. patent application Ser. No. 16/156,548 titled “Temperature Sensing and Control System and Method,” which was filed on Oct. 10, 2018 and is assigned to Polaris Industries Inc. of Medina, Minn. The entire disclosure of application Ser. No. 16/156,548 is incorporated by reference herein. - In addition to, or in place of, the
warmers warmers - The
display 58 may be any suitable touch screen having any suitable size, such as 7″ diagonally. With reference toFIG. 9 , thedisplay 58 includes thecontrol module 64B, which controls various functions of thedisplay 58 and the display assembly associated therewith. For example, thecontrol module 64B may operate an operating system of thedisplay 58, may identify location of the snowmobile based on inputs from GPS receiver 440 (seeFIG. 11 ), and may control any other suitable functions and features as well. - As illustrated in
FIG. 9 , surrounding thedisplay 58 is anupper bezel 420A, aleft hand bezel 420B, aright hand bezel 420C, and alower bezel 420D. Each one of theupper bezel 420A, theleft hand bezel 420B, and the right-hand bezel 420C have a similar, or the same, height. Thus, thedisplay 58 is recessed beneath each one of theupper bezel 420A, theleft hand bezel 420B and theright hand bezel 420C at a common distance. - The
lower bezel 420D is not as tall as (or is more shallow than) each one of theupper bezel 420A, theleft hand bezel 420B, and theright hand bezel 420C. In some applications, thelower bezel 420D may not be present at all. To the left and right of thelower bezel 420D arecorner bezels 420E. Thecorner bezels 420E are angled inward toward thelower bezel 420D. Specifically, theleft corner bezel 420E extends from theleft hand bezel 420B to thelower bezel 420D. Theright corner bezel 420E extends fromright hand bezel 420C to thelower bezel 420D. Thecorner bezels 420E may have the same height as thelower bezel 420D, or may have the same height as the left andright hand bezels corner bezels 420E may gradually decrease in height from the left andright hand bezels lower bezel 420D. - The relatively lower or shallow height of the
lower bezel 420D (and optionally thecorner bezels 420E) reduces the buildup of, and facilitates removal of, snow and other contaminates at the lower portion of thedisplay 58. For example, current snowmobile displays are surrounded by a bezel that is uniform in height around the display. As a result, snow and other contaminates often build up on the lower bezel, and the height of existing bezels at the bottom portion thereof makes it difficult to wipe away or otherwise remove the snow and contaminates. Advantageously, thelower bezel 420D of the present disclosure is relatively short and shallow (or not present at all) thereby making it easier to wipe snow and other contaminates off of thedisplay 58. - The
display 58 includes alower portion 58′, which is adjacent to thelower bezel 420D. Thelower portion 58′ is the bottom fifth of thedisplay 58 and extends about 0.25″-0.50″ from thelower bezel 420D. Although the relatively shallowlower bezel 420D helps to prevent or lessen buildup of snow and other contaminates at thelower portion 58′ of thedisplay 58, some buildup may occur. Buildup of snow and contaminates at thelower portion 58′ may result in thedisplay 58 sensing false touch inputs. To lessen or eliminate the occurrence of false inputs caused by snow, contaminates, or other foreign objects at thelower portion 58′, thelower portion 58′ is configured with a sensitivity level that is reduced as compared to the rest of thedisplay 58. Thelower portion 58′ may always be provided with reduced sensitivity or the user may select a reduced sensitivity mode for thelower portion 58′ as conditions warrant. - On opposite sides of the
display 58 is acontrol panel 150, which includes any suitablephysical controls 152 for entering commands into thedisplay 58. For example, thecontrols 152 may be any suitable buttons, knobs, switches, joysticks, etc. Thecontrols 152 may include a pair of up and down switches on the right hand side thereof. Thedisplay 58 may be configured such that simultaneous actuation of the up and down switches, for example, places thedisplay 58 in a “lock mode,” whereby touch inputs are not accepted, and thus thephysical controls 152 must be used to enter inputs. This mode provides numerous advantages, particularly under conditions resulting in the buildup of snow or other contaminates on thedisplay 58, which may cause false inputs. -
FIG. 10A illustrates anexemplary display screen 430 of thedisplay 58. In the example ofFIG. 10A , various features of thesnowmobile 10 may be controlled by way of touch inputs, such as thehand warmers FIG. 10A , thehand warmers hand warmers hand warmers - Pressing the “settings” button in the heated grips section of display screen 430A results in the
display 58 displayingsettings page 432 illustrated inFIG. 10B . At thesettings page 432, the ideal temperature for thehand warmers hand warmers hand warmers hand warmers FIGS. 17, 18A, and 18B . -
FIG. 11 illustrates the undersurface of the hood assembly and the rear of thedisplay 58. Extending from the rear of thedisplay 58 is awire harness 144. Thewire harness 144 connects thedisplay 58 and thecontrol module 64B thereof to various other components of thehood 50, such as, but not limited, to the following: anantenna 168; aGPS receiver 440; aUSB port 156;headlights 54 by way ofheadlight connector 144A; and to the lefthand control assembly 66 by way ofconnector 144B. The left andright hand warmers hand control assembly 66 or indirectly by way of thedisplay 58. - As illustrated in
FIG. 12 , theheadlights 54 includemain headlights 54A andaccent lights 54B. Themain headlights 54A provide the majority of the forward illumination used to operate thesnowmobile 10 at night or in low light conditions, and may also be activated during the day to make thesnowmobile 10 more visible to others. The accent lights 54B are relatively low power lights that generate less lumens as compared to themain headlights 54A. The accent lights 54B may be configured to always be illuminated when thesnowmobile 10 is being used, as well as for a predetermined period thereafter, as described further herein. The accent lights 54B improve the visibility of thesnowmobile 10, and enhance the aesthetics of the snowmobile as well. Operation of theheadlights -
FIG. 13 illustrates anexemplary power system 450 of thesnowmobile 10. Thepower system 450 includes anysuitable power source 452. Thepower source 452 may be any suitable battery, such as any suitable lithium ion battery, or any suitable capacitor, such as a 7F capacitor. Thepower source 452 is connected to thedisplay 58 at PIN 3 (switched power) and PIN 4 (constant battery power). Between thepower source 452 and thedisplay 58 is anysuitable switch 454 such as a keyswitch. Thepower source 452 is further connected to themain headlights 54A and the accent lights 54B. - The
power system 452 further includes arelay switch 456. At an engine speed greater than 1,000 RPM, therelay switch 456 closes in order to power themain headlights 54A andaccent lights 54B by chassis power. Thepower system 450 further powers fuel andoil pumps 458 and may include anoptional regulator 460. Any suitable regulator may be used, such as a PBR (power boost regulator). Thepower system 450 is described in greater specificity herein. -
FIG. 14 illustrates power supply to themain headlights 54A (includinghigh beams 470A andlow beams 470B) and the accent lights 54B. Thehigh beams 470A and thelow beams 470B are connected to ground atPIN 1 480. Main headlight power for thelow beams 470B is provided by way ofPIN 2 at 482. When powered,PIN 2 powers both thelow beams 470B and theaccent light 54B. Theaccent light 54B is powered at full power, such as at about 330-360 milliamps. Power for thehigh beams 470A is provided by way ofPIN 3 at 484 (100 mA switch to power from left hand control 66).Switch 472 is arranged betweenPIN 3 and the high beams 470A. Power to the accent lights 54B may be provided by way ofPIN 4 at 486, which powers the accent lights 54B by way of thedisplay 58 when the engine is off at a relatively low intensity, such as at about 250 milliamps, as compared to when powered by way ofPIN 2. Power can be directed to thehigh beams 470A, thelow beams 470B, and the accent light 54B in any other suitable manner as well, such as by way of any suitable relay. -
FIGS. 15A and 15B illustrate exemplary power mode states of thesnowmobile 10, and particularly the lefthand control assembly 66 thereof, atreference numeral 510. The power mode states include the following: Mode 0 (no power state); Mode 1 (on state); Mode 2 (engine off, full power state); Mode 3 (engine off, low power state); and Mode 4 (on state, no chassis power). - In the no power state of
Mode 0, thesnowmobile 10 is completely shutdown, there is no critical power, no chassis power, and the lefthand control assembly 66 has no functionality. - In the on state of
Mode 1, theengine 70 is on and there is critical power (such as at about 14V for example) and chassis power (such as at about 14.4V, for example), but no switched power. InMode 1, expected functionality includes: CAN communication; headlight control; reverse drive of thesnowmobile 10; and control of the heaters, such as thehand warmers - In Mode 2 (engine off, full power state), battery power is available if the
snowmobile 10 includes a battery. No critical power or chassis power is available inMode 2, and thusMode 2 is only available when thesnowmobile 10 includes a battery. Expected functionality inMode 2 includes CAN communication and push-to-start if thesnowmobile 10 is outfitted with such functionality. The following functionality is not available in Mode 2: headlight control, reverse, and control of heaters, such ashand warmers Mode 2 permits communication with the instrumentation. - In Mode 3 (engine off, low power state), battery power is available if the
snowmobile 10 includes a battery. No critical power or chassis power is available inMode 3, and thusMode 3 is only available when thesnowmobile 10 includes a battery. The lefthand control assembly 66 will wake-up toMode 2 in response to a button push, receipt of a CAN bus signal, or critical power. The following functionality is not available: CAN communication, headlight control, reverse operation, push-to-start (when the snowmobile is outfitted with such functionality), control of heaters, such ashand warmers Mode 3 reduces current draw on the battery when the user forgets to turn the key off. Also,Mode 3 is used to wake up from the lower power state. - In Mode 4 (engine on, no chassis power), battery power is available and critical power is available, such as at about 14V for example. Expected functionality includes: CAN communication, headlight control, and reverse operation. Push-to-start is not available (if included with the snowmobile 10), and there is no control of heaters. Thus in
Mode 4 the engine is running, but chassis power is either disabled or not yet turned on by a power boosting regulator (PBR). - The
snowmobile 10 is placed in the different power mode states, and the control logic ofFIGS. 15A and 15B is executed by, thecontrol module 64A of theleft hand control 66. Atblock 512, the power mode state of thesnowmobile 10 ismode 0, which is a no power state. Fromblock 512, the control logic proceeds to block 514. Atblock 514, thecontrol module 64A checks to determine whether the ignition switch of thesnowmobile 10 has been activated and whether a battery (such as the power source 452) is present. If the ignition switch has not been activated and/or no battery is present, the control logic proceeds to block 516. Atblock 516 thecontrol module 64A determines whether there is critical power and whether the engine is on. If the engine is off and/or critical power is not present, the control logic returns to block 512 and the snowmobile remains in the no power state ofmode 0. - If at
block 514 thecontrol module 64A determines that the ignition switch is on and a battery is present, the control logic proceeds to block 520. Also, if atblock 516 thecontrol module 64A determines that critical power is present and the engine is on, the control logic proceeds to block 520. Atblock 520, thesnowmobile 10 is inmode 1, which is the on state. - From the mode 1 (on state) of
block 520, the control logic proceeds to block 522. Atblock 522, thecontrol module 64A determines whether critical power is present. If critical power is present, the control logic proceeds to block 524. Atblock 24, thecontrol module 64A determines whetherchassis power 524 is present. If chassis power is present, thecontrol module 64A returns block 520, which is the full power on state ofmode 1. If atblock 524 thecontrol module 64A determines that there is no chassis power, the control logic proceeds to block 526, where thecontrol module 64A operates thesnowmobile 10 inmode 4, which is an on state without chassis power. Fromblock 526, the control logic returns to block 522. - If at
block 522 thecontrol module 64A determines that critical power is not present, the control logic proceeds to block 528. Atblock 528, thecontrol module 64A checks for switch battery power. If no battery power is detected atblock 528, the control logic proceeds to block 512 where thecontrol module 64A places thesnowmobile 10 inpower mode state 0, which is the no power state. If atblock 528 thecontrol module 64A detects battery power, the control logic proceeds to block 530. Atblock 530, thecontrol module 64A places thesnowmobile 10 inpower mode 2, which is an engine off, full power state. - From
block 530, the control logic proceeds to block 532. Atblock 532, thecontrol module 64A checks for battery power. If no battery power is detected, the control logic to block 512, which is the no power state ofmode 0. If atblock 532 battery power is detected, the control logic proceeds to block 534. Atblock 534, thecontrol module 64A checks for critical power. If critical power is present, the control logic returns to the on state ofpower mode state 1. - If at
block 534 critical power is not detected, the control logic proceeds to block 536 ofFIG. 15B . Atblock 536, thecontrol module 64A checks for button pushes by the operator, such as actuation of the buttons on theleft hand control 66, touch inputs to thedisplay 58, or actuation of thephysical controls 152 adjacent to thedisplay 58. If button pushes are detected, the control logic returns block 530 and thecontrol module 64A keeps thesnowmobile 10 in the engine off, full power state. If atblock 536 no button pushes are detected, the control logic proceeds to block 538. Atblock 538 thecontrol module 64A checks for a CAN message from an IC. If a CAN message is detected, the control logic returns to block 530 where the engine off, full power state is maintained. If atblock 538 no CAN messages are detected, the control logic proceeds to block 540. - At
block 540, thecontrol module 64A determines whether a state change timer of thecontrol module 64A has elapsed. If the state change timer has not yet elapsed, the control logic returns to block 530 where the snowmobile is maintained in the engine off, full power state. If the state change timer has elapsed, the control logic proceeds to block 542. - At
block 542, thecontrol module 64A places thesnowmobile 10 inmode 3, which is an engine off, full power state. Fromblock 542 the control logic proceeds to block 544, where thecontrol module 64A checks for switch battery power. If no such battery power is detected, the control logic returns to block 512 where thecontrol module 64A places thesnowmobile 10 in the no power state. If atblock 544 battery power is detected, the control logic proceeds to block 546. Atblock 546, thecontrol module 64A determines whether critical power is present. If critical power is present, the control logic returns to block 530 and thecontrol module 64A places thesnowmobile 10 in the engine off, full power state. If atblock 546, thecontrol module 64A determines that critical power is not present, the control logic proceeds to block 548 where the control module checks for button pushes, such as actuation of the buttons on the lefthand control assembly 66, touch inputs to thedisplay 58, or actuation of thephysical controls 152 adjacent to thedisplay 58. If one or more button pushes are detected, the control logic returns to block 530 where thecontrol module 64A places the snowmobile in the engine off, full power state. If atblock 548 no button pushes are detected, the control logic proceeds to block 550. Atblock 550, thecontrol module 64A checks for CAN messages from the IC. If no CAN messages are detected, thecontrol module 64A maintains thesnowmobile 10 in the engine off, low power state ofmode 3. If at block 550 a CAN message is detected, the control logic returns to block 530 where thecontrol module 64A maintains thesnowmobile 10 in the engine off, full power state ofmode 2. -
FIG. 16A illustrates an exemplary full power state flow diagram 610 for thedisplay 58, the logic of which is carried out by thecontrol module 64A, for example. Atblock 620, thedisplay 58 is in the quiescent current state. The quiescent current state is the lowest power state in which everything is off except GPS. Thus the screen is off, the backlight is off, processors are booted down, GPS is off, and the accent lights 54B are off. - At
block 622, thecontrol module 64A determines whetherPIN 4 is powered. IfPIN 4 is not powered, thecontrol module 64A proceeds to the power off state inblock 624. IfPIN 4 is powered, thecontrol module 64A proceeds fromblock 622 to block 626. Atblock 626, thecontrol module 64A determines whetherPIN 3 is powered. IfPIN 3 is not powered, the control logic returns to block 620 where thecontrol module 64A returns thedisplay 58 to the quiescentcurrent state 620. If atblock 626,PIN 3 is powered, thecontrol module 64A determines whetherPIN 3 has a rising edge. If aPIN 3 rising edge is detected, the control logic proceeds to block 632, where thecontrol module 64A places thedisplay 58 in a full power state. In the full power state thedisplay 58 is on, the backlight is on, processors are on, GPS is locked, and theaccent light 54B is on. If atblock 628 noPIN 3 rising edge is detected, the control logic proceeds to block 630. Atblock 630, thecontrol module 64A checks for CAN traffic. If CAN traffic is detected, thecontrol module 64A proceeds to block 630 and places thedisplay 58 10 in a full power state. If atblock 630 no CAN traffic is detected, the control logic returns to block 620 where thecontrol module 64A maintains the quiescent current state. -
FIG. 16B illustrates another power state flow diagram in accordance with the present disclosure atreference numeral 650. The control logic starts atblock 652 with the start of CAN transmission. In response to CAN transmission, thecontrol module 64A activates the accent lights 54B, and atblock 656 thecontrol module 64A places thedisplay 58 in the full power state. Atblock 658, thecontrol module 64A checks whether theengine 70 is running. If theengine 70 is running, the control logic proceeds to block 660 where thecontrol module 64A resets a power timer, and thedisplay 58 remains in the full power state inblock 656. If atblock 658 thecontrol module 64A determines that the engine is not running, the control logic proceeds to block 662, where thecontrol module 64A determines whetherPIN 4 is powered. IfPIN 4 is not powered, atblock 664 thecontrol module 64A starts an increment shutdown timer, and atblock 666 thecontrol module 64A places thedisplay 58 in the idle power state. The increment shutdown timer is designated to keep track of the time the display has been unpowered before imitating a software shutdown at 850 ofFIG. 16E . The idle power state is a standby/idle power state designated for reducing load on the battery while keeping GPS locked and the processor alive. The display screen is off, the backlight is off, processors remain booted, GPS remains locked, thedisplay 58 responds to display and external inputs, and theaccent light 54B is off. - If at
block 662PIN 4 is powered, the control logic proceeds to block 668, where thecontrol module 64A determines whetherPIN 3 is powered. IfPIN 3 is not powered,control module 64A initiates an increment power timer atblock 670. Upon expiration of theincrement power timer 670, the control logic proceeds to block 672, where in thecontrol module 64A places thedisplay 58 in the play dead state. The increment power timer is designated to keep track of time thedisplay 58 has been in a certain state of the power management strategy. The play dead state is a standby/idle power state designated for reducing load on the battery while keeping GPS locked and the processor alive. The screen of thedisplay 58 is off, the backlight is off, processors remain booted, GPS is locked, display and external inputs are not responded to, and the accent lights 54B are off. - If at
block 668PIN 3 is powered, the control logic proceeds to block 674 where thecontrol module 64A resets a shutdown timer. Once the shutdown timer has been reset, the control logic proceeds to block 676 where thecontrol module 64A checks for inputs to thedisplay 58, such as touch inputs or actuation of thephysical controls 152 adjacent to thedisplay 58. If display inputs are detected, thecontrol module 64A resets the power timer atblock 660 and the full power state is maintained. If atblock 676 no display inputs are detected, thecontrol module 64A checks for external inputs atblock 678. If external inputs are detected, thecontrol module 64A resets the power timer atblock 660 and the full power state is maintained. If atblock 678 no external inputs are detected, the control logic proceeds to block 680, where thecontrol module 64A activates the increment power timer. Atblock 682, if the power timer is greater than full power time, the logic proceeds to block 684 where thecontrol module 64A places thedisplay 58 in the idle power state. If the power timer is not greater than the full power time, then the control logic returns to block 656, where the full power state is maintained. The full power time is a calibratable parameter designated as the time threshold thedisplay 58 stays in full power mode without display button presses, hand control button presses, and engine not running. The full power time is stored in memory of thecontrol module - With reference to
FIG. 16C , another power state flow diagram is illustrated atreference numeral 710. In response to a stop CAN transmission atblock 712, thecontrol module 64A turns off theaccent light 54B atblock 714 and places thedisplay 58 in the idle power state atblock 716. Fromblock 716, the control logic proceeds to block 718, where thecontrol module 64A determines whether theengine 70 is running. If theengine 70 is running, the control logic proceeds to block 748, where thecontrol module 64A resets the power timer and places thedisplay 58 in the full power state atblock 750. - If at
block 718 the engine is not running, the control logic proceeds to block 720, where thecontrol module 64A determines whetherPIN 4 is powered. IfPIN 4 is not powered, the control logic proceeds to block 722, where thecontrol module 64A activates an increment shutdown timer. Atblock 724, thecontrol module 64A checks whether the shutdown timer is greater than the perc. time. The perc. time is a calibratable parameter designated as the time threshold thedisplay 58 waits until initiating software shutdown at 850 ofFIG. 16E . The perc. time has a default of 500 ms, a range of 10 seconds, and a resolution of 10 ms. If the shutdown timer is greater, the control logic returns to block 716, where thedisplay 58 is maintained in the idle power state. If atblock 724 the shutdown timer is not greater than the perc. time, thecontrol module 64A places thedisplay 58 in the power off state atblock 726. If atblock 720PIN 4 is powered, thecontrol module 64A checks whetherPIN 3 is powered atblock 730. IfPIN 3 is not powered, thecontrol module 64A activates the increment power timer atblock 732, and then places thedisplay 58 in the play dead state atblock 734. - If at
block 730PIN 3 is powered, thecontrol module 64A resets the shutdown timer atblock 740. Fromblock 740, thecontrol module 64A checks for display inputs atblock 742. If display inputs are detected, thecontrol module 64A resets the power timer atblock 748, and places thedisplay 58 in the full power state atblock 750. If atblock 742 no display inputs are detected, thecontrol module 64A checks for external inputs atblock 744. If external inputs are detected, thecontrol module 64A resets the power timer atblock 748, and places thedisplay 58 in the full power state atblock 750. If no external inputs are detected, thecontrol module 64A activates the increment power timer atblock 746. If atblock 728 the power timer is greater than the idle power time, thecontrol module 64A places thedisplay 58 in the power off state atblock 726. If the power timer is not greater than the idle power time, then the control logic proceeds to block 716, and thecontrol module 64A maintains thedisplay 58 in the idle power state. The idle power time is a calibratable parameter designated as the time threshold thedisplay 58 stays in idle power mode without a display input, hand control input, and engine not running. The idle power time is stored in memory of thecontrol module -
FIG. 16D illustrates another exemplary power state flow diagram in accordance with the present disclosure atreference numeral 810. In response to a stop CAN transmission atblock 812, thecontrol module 64A powers off the accent lights atblock 814 and places thedisplay 58 in the play dead state atblock 816. Atblock 818, thecontrol module 64A checks for power atPIN 4. IfPIN 4 is not powered, thecontrol module 64A activates the increment shutdown timer atblock 820. Atblock 822, thecontrol module 64A checks whether the shutdown timer is greater than the perc. time. If the shutdown timer is not greater than the perc. time, thecontrol module 64A maintains thedisplay 58 in the play dead state atblock 816. If the shutdown timer is greater than the perc. time, thecontrol module 64A places thedisplay 58 in the power off state atblock 824. - If
PIN 4 is powered atblock 818, thecontrol module 64A checks whether the battery voltage is greater than a predetermined battery voltage threshold atblock 830. The battery voltage threshold is a calibratable parameter designated as the threshold where thedisplay 58 decides there is not sufficient charge in the battery and initiates a software shutdown at 850 ofFIG. 16E . The battery voltage threshold has a default of 8V, a range of 0-14V, and a resolution of 0.1V. If the battery voltage is not greater than the predetermined threshold, thecontrol module 64A places thedisplay 58 in the power off state atblock 824. If the battery voltage is greater than the predetermined threshold, thecontrol module 64A checks whetherPIN 3 is powered atblock 832. IfPIN 3 is powered, thecontrol module 64A resets the power time atblock 834, and places thedisplay 58 in the full power state atblock 836. IfPIN 3 is not powered, thecontrol module 64A activates the increment power timer atblock 840, and atblock 842 thecontrol module 64A checks whether the power timer is greater than the play dead time. If the power timer is greater than the play dead time, thecontrol module 64A places thedisplay 58 in the power off state atblock 844. If the power timer is not greater than the play dead time, thecontrol module 64A maintains thedisplay 58 in the play dead state atblock 816. The play dead time is a calibratable parameter designated as the time threshold thedisplay 58 stays in play dead mode (key switch off, engine not running). The play dead time is stored in thecontrol module -
FIG. 16E illustrates another power state flow diagram in accordance with the present disclosure atreference numeral 850 for the software shutdown procedure. Atblock 852, thecontrol module 64A initiates the software shutdown procedure, and places thedisplay 58 in the power off state atblock 854. Atblock 856, thecontrol module 64A checks whetherPIN 4 is powered. IfPIN 4 is not powered, thecontrol module 64A maintains thedisplay 58 in the power off state atblock 854. IfPIN 4 is powered, thecontrol module 64A places thedisplay 58 in the quiescent current state. - The circuitry of
FIG. 17 may be included with thesnowmobile 10 at any suitable location. For example, the circuitry ofFIG. 17 may be included within the lefthand control assembly 66 on a printed circuit board thereof. The printed circuit board may also include thecontrol module 64A and a CAN transceiver.FIG. 17 illustrates current flow to the right hand warmer 434B, the left hand warmer 434A and the thumb warmer 436 of the handle bars 26. In the example ofFIG. 17 , power is provided by way ofchassis power 920. A current amplifier is included atreference numeral 922 and one or more high side drivers are included atreference numeral 924. For each warmer (or group of warmers), over which individual temperature control is desired, a separatehigh side driver 924 is included. For example, to control the temperature of thehand warmers high side driver 924 is included for thehand warmers high side drivers 924 for thehand warmers hand warmers high side driver 924 is included for the thumb warmer 436. Any suitable number of additionalhigh side drivers 924 may be included to individually control the temperature of any other warmers, such as, but not limited to, the following warmers: brake handle warmer; storage compartment warmer; goggles warmer; garment warmer; windshield warmer; helmet shield warmer; seat warmer; etc. Thehigh side driver 924 is driven by pulse width modulation (PWM), which advantageously allows for customized temperature settings of the left hand warmer 434A, the right hand warmer 434B, and the thumb warmer 436 by the operator as explained above, where the user is able to set preferred temperatures for the low, medium and high temperature settings of thehand warmers -
FIGS. 18A and 18B illustrate exemplary resistive control diagrams for controlling the left hand warmer 434A, the right hand warmer 434B and the thumb warmer 436. Beginning atblock 1012, temperature of thehand warmers display screen 432 ofFIG. 10B as described above. The temperature of the left hand warmer 434A, the right hand warmer 434B and the thumb warmer 436 is determined atblock 1030 based on numerous inputs, such as the following: temperature coefficient of resistance (a) 1014, reference resistance (Rref) 1016; and reference temperature (Tref) 1018. Atblock 1030, the temperature is also determined based on heater resistance including: measuredvoltage 1020; measured current 1022;internal resistance 1024; andwire resistance 1026. At block 1032, heater resistance R=measured voltage (V) ofblock 1020 divided by measured current (I) ofblock 1022. Atblock 1030, heater temperature equals (R/Rref− 1/α+Tref). Both theset temperature 1012 and the heater temperature calculated atblock 1030 are input to block 1048. - At
block 1048, the difference node for command value—measured is determined to arrive at the control error “e”. Atblock 1050, peak coefficient “P” is determined as follows kP*e. Atblock 1052, an integrator is determined as follows ∫ki*e dt). Atblock 1054, thecontrol module 64A determines whether the integrator is greater than maximum duty. If the integrator is greater than maximum duty, then thecontrol module 64A sets the integrator to equal maximum duty atblock 1060. Fromblock 1060, the control logic proceeds to block 1064, where the duty is determined as the sum of peak coefficient (P) and integrator (I). If atblock 1054 the integrator is not greater than maximum duty, thecontrol module 64A checks whether the integrator is less than 0 atblock 1056. If the integrator is less than 0, then at 1062, the integrator is set to 0. If the integrator is not less than 0, then the control logic proceeds to block 1064. Fromblock 1064, the control logic proceeds to block 1044 ofFIG. 18A . Atblock 1044, thecontrol module 64A determines whether duty is greater than limit duty. - Limit duty is determined at
blocks block 1034, thecontrol module 64A determines whether the measured current 1022 is greater than a predetermined current limit. If the measured current 1022 is not greater than the current limit, then atblock 1042 the limit duty is set to equal a predetermined maximum duty. If atblock 1034 the measured current 1022 is greater than the current limit, then atblock 1040 thecontrol module 64A sets the limit duty as follows: limit duty equals (current limit*maximum duty)/current. - At
block 1044, thecontrol module 64A determines whether the duty fromblock 1064 is greater than the limit duty fromblocks block 1044 the duty is greater than the limit duty, atblock 1046, the duty is set to equal the limit duty, and the control logic proceeds to block 1070, and the duty is output to PWM control, which is input to thehigh side driver 924 ofFIG. 17 for driving the right hand warmer 434B, the left hand warmer 434A and/or the thumb warmer 436. If atblock 1044, the duty is not greater than the limit duty, atblock 1066 thecontrol module 64A determines whether the duty is less than the minimum duty. If the duty is less than the minimum duty, then atblock 1068 the duty is set to equal the minimum duty, which is output to PWM control atblock 1070. If atblock 1066 the duty is not less than the minimum duty, then the duty is output to PWM control atblock 1070. - The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
- Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
- The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “comprising,” “including,” and “having,” are inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. It is also to be understood that additional or alternative steps may be employed.
- When an element or layer is referred to as being “on,” “engaged to,” “connected to,” or “coupled to” another element or layer, it may be directly on, engaged, connected or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly engaged to,” “directly connected to,” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
- Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
- Spatially relative terms, such as “inner,” “outer,” “beneath,” “below,” “lower,” “above,” “upper,” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” other elements or features would then be oriented “above” the other elements or features. Thus, the example term “below” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Claims (31)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/723,806 US20210188383A1 (en) | 2019-12-20 | 2019-12-20 | Snowmobile control system |
CA3103012A CA3103012A1 (en) | 2019-12-20 | 2020-12-16 | Snowmobile control system |
CA3200015A CA3200015A1 (en) | 2019-12-20 | 2020-12-16 | Snowmobile control system |
US18/311,466 US20230271661A1 (en) | 2019-12-20 | 2023-05-03 | Snowmobile control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US16/723,806 US20210188383A1 (en) | 2019-12-20 | 2019-12-20 | Snowmobile control system |
Related Child Applications (1)
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US18/311,466 Division US20230271661A1 (en) | 2019-12-20 | 2023-05-03 | Snowmobile control system |
Publications (1)
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US20210188383A1 true US20210188383A1 (en) | 2021-06-24 |
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Family Applications (2)
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US16/723,806 Abandoned US20210188383A1 (en) | 2019-12-20 | 2019-12-20 | Snowmobile control system |
US18/311,466 Pending US20230271661A1 (en) | 2019-12-20 | 2023-05-03 | Snowmobile control system |
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Application Number | Title | Priority Date | Filing Date |
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US18/311,466 Pending US20230271661A1 (en) | 2019-12-20 | 2023-05-03 | Snowmobile control system |
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US (2) | US20210188383A1 (en) |
CA (2) | CA3103012A1 (en) |
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US20200114999A1 (en) * | 2018-10-10 | 2020-04-16 | Polaris Industries Inc. | Temperature sensing and control system and method |
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ATE302711T1 (en) * | 2002-06-10 | 2005-09-15 | Honda Access Kk | CONTROL DEVICE FOR HEATED GRIPS |
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US11034270B2 (en) * | 2017-08-24 | 2021-06-15 | Indian Motorcycle International, LLC | Heated and cooled seat |
US11458795B1 (en) * | 2018-07-27 | 2022-10-04 | Bombardier Recreational Products Inc. | Rear suspension assembly and method of controlling a rear suspension assembly |
-
2019
- 2019-12-20 US US16/723,806 patent/US20210188383A1/en not_active Abandoned
-
2020
- 2020-12-16 CA CA3103012A patent/CA3103012A1/en active Pending
- 2020-12-16 CA CA3200015A patent/CA3200015A1/en active Pending
-
2023
- 2023-05-03 US US18/311,466 patent/US20230271661A1/en active Pending
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US6114668A (en) * | 1996-08-29 | 2000-09-05 | Koita Manufacturing Co., Ltd. | Heater-containing grip for vehicles |
US6770848B2 (en) * | 2001-04-19 | 2004-08-03 | William S. Haas | Thermal warming devices |
CA2444325A1 (en) * | 2002-05-21 | 2005-04-03 | David Edward Livingstone | Temperature control for a vehicle grip surface |
US20040007567A1 (en) * | 2002-07-12 | 2004-01-15 | Downey Philip L. | Heated cycle grip |
US20040084292A1 (en) * | 2002-11-06 | 2004-05-06 | Arctic Cat Inc. | Adjustable emergency stop switch |
EP1555198A1 (en) * | 2004-01-18 | 2005-07-20 | Mitsubishi Cable Industries, Ltd. | Apparatus for and method of controlling grip heater |
US7214906B1 (en) * | 2005-03-16 | 2007-05-08 | K Brent Hansen | Heated hand grip control |
US20060219686A1 (en) * | 2005-04-01 | 2006-10-05 | Honda Access Corp. | Grip heater control apparatus |
US20100097325A1 (en) * | 2008-10-21 | 2010-04-22 | Daisuke Nagao | Touch screen assemblies and saddle-type vehicles having one or more touch screen assemblies |
US20130212765A1 (en) * | 2012-02-16 | 2013-08-22 | Jack Cornelius | Pwm heating system for eye shield |
US20190071145A1 (en) * | 2017-09-05 | 2019-03-07 | Kawasaki Jukogyo Kabushiki Kaisha | Grip heater device |
US20200114999A1 (en) * | 2018-10-10 | 2020-04-16 | Polaris Industries Inc. | Temperature sensing and control system and method |
Also Published As
Publication number | Publication date |
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US20230271661A1 (en) | 2023-08-31 |
CA3103012A1 (en) | 2021-06-20 |
CA3200015A1 (en) | 2021-06-20 |
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