Vehicle lift system with adaptive wireless communication

• US 10,457,536 B2
• Filed: 02/25/2019
• Issued: 10/29/2019
• Est. Priority Date: 03/19/2012
• Status: Active Grant

• Current Assignee: Gray Manufacturing Company Incorporated
• Original Assignee: Gray Manufacturing Company Incorporated
• Inventors: Jaipaul, Larry M., Fagan, John E., Sandmann, David Dwight, Keck, Jr., William R., Rucker, Stephen J., McKee, Ralph S.
• Primary Examiner(s): Salata, Anthony J
• Application Number:
  US16/284,775
• Publication Number:
  US 20190185305A1
• Time in Patent Office: 246 Days
• Field of Search: 187203, 187209, 187210, 187223, 187227, 187247, 187285, 187286, 187290, 187391, 187392, 187393
• CPC Class Codes: B66F 13/00 Common constructional features or accessories
• CPC Class Codes: B66F 3/46 Combinations of several jacks with means for interrelating lifting or lowering movements
• CPC Class Codes: B66F 5/00 Mobile jacks of the garage type mounted on wheels or rollers
• CPC Class Codes: B66F 7/02 with platforms suspended from ropes, cables, or chains or screws and movable along pillars
• CPC Class Codes: B66F 7/10 with platforms supported directly by jacks
• CPC Class Codes: B66F 7/28 Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
• CPC Class Codes: H04B 7/24 for communication between two or more posts wireless communication networks H04W

Abstract

Wireless portable vehicle lift system incorporating one or more enhanced communication and/or control features. The lift system can incorporate enhanced wireless communication features such as the ability to automatically scan a plurality of communication channels, determine a clearest communication channel, and use the clearest communication channel for wireless communication.

Claims

1. A wireless portable vehicle lift system comprising:

a plurality of substantially identical individual lifts;

a detachable remote control physically connected in wired communication with one of said individual lifts; and

an adaptive communication system for providing wireless communication between said individual lifts, wherein said adaptive communication system is configured to automatically scan a plurality of communication channels and determine a clearest communication channel for wireless communication between said individual lifts,

wherein each of said individual lifts comprises—

a base for supporting said individual lift on a floor or the ground,

a post coupled to said base and extending upwardly from said base,

a carriage configured to engage a wheel of a vehicle,

a lifting actuator configured to vertically shift said carriage relative to said post,

a height sensor configured to measure a height of said carriage and/or vehicle,

a rechargeable battery,

a battery charger,

an e-stop button,

a transceiver configured to operate on said clearest communication channel, and

a user interface comprising a display screen,

wherein said user interface is configured to display height information, weight information, and battery status information,

wherein said user interface is configured to display a pass code screen that prompts the lift operator to enter a pass code,

wherein each of said individual lifts is configured to track and/or store lift data relevant to safety, maintenance, and/or proper operation of said lift system,

wherein each of said individual lifts is configured to provide a notification of maintenance needs based on said lift data,

wherein said lift system is configured to be selectively operated in a paired mode where two of said individual lifts are paired with one another and operate independently of the other of said individual lifts that are not paired.

2. The vehicle lift system of claim 1, wherein said adaptive communication system enables each of said individual lifts to track its own actions and the actions of all other individual lifts of said lift system to there by provide collective intelligence that enables coordinated lifting a vehicle with none of said individual lifts being a dedicated master lift or slave lift.

3. The vehicle lift system of claim 1, wherein each of said individual lifts comprises an interface microprocessor configured to process information relating to said user interface, a control microprocessor configured to process information relating to at least said height sensor and said lifting actuator, and a common area of memory shared by said interface and control microprocessors.

4. The vehicle lift system of claim 3, wherein each of said individual lifts comprises a communication microprocessor configured to process information relating to wireless communication between said individual lifts, wherein said communication microprocessor shares said common area of memory with said interface and control microprocessors.

5. The vehicle lift system of claim 3, wherein said common area of memory comprises a communication buffer resident in said control microprocessor.

6. The vehicle lift system of claim 1, wherein said adaptive communication system is configured to scan communication channels and determine said clearest communication channel during initial establishment of a secure communication link between said individual lifts.

7. The vehicle lift system of claim 1, wherein said adaptive communication system is configured to transmit a beacon signal from a first of said individual lifts to be powered up, wherein said beacon signal is maintained during establishment of a secure communication link between all said individual lifts of said lift system.

8. The vehicle lift system of claim 1, wherein none of said individual lifts are a master lift or a slave lift, wherein said adaptive communication system is configured to use one of said individual lifts as a pseudo master lift for communication purposes, wherein said pseudo master lift poles said individual lifts for data.

9. The vehicle lift system of claim 8, wherein the same one of said individual lifts is maintained as said pseudo master lift during operation of said lift system.

10. The vehicle lift system of claim 1, wherein said lifting actuator is a hydraulic actuator.

11. A wireless portable vehicle lift system comprising:

a plurality of substantially identical individual lifts;

an adaptive communication system for providing wireless communication between said individual lifts of said lift system, wherein said adaptive communication system is configured to automatically scan a plurality of communication channels and determine a clearest communication channel for wireless communication between said individual lifts, wherein each of said individual lifts comprises—

a base for supporting said individual lift on a floor or the ground,

a post coupled to said base and extending upwardly from said base,

a carriage configured to engage a wheel of a vehicle and configured to be vertically shiftable relative to said post,

a rechargeable battery,

a battery charger,

an e-stop button,

a transceiver configured to operate on said clearest communication channel, and

a user interface comprising a display screen.

12. The vehicle lift system of claim 11, wherein said adaptive communication system is configured to scan communication channels and determine said clearest communication channel during initial establishment of a secure communication link between said individual lifts.

13. The vehicle lift system of claim 11, wherein said adaptive communication system is configured to scan communication channels and determine said clearest communication channel on a periodic basis during operation of said lift system.

14. The vehicle lift system of claim 11, wherein said adaptive communication system is configured to i) determine said clearest communication channel during initial establishment of a secure communication link between said individual lifts and ii) periodically assess and update said clearest communication channel during operation of said lift system.

15. The vehicle lift system of claim 11, wherein said adaptive communication system is configured to transmit a beacon signal from a first of said individual lifts to be powered up, wherein said beacon signal is maintained during establishment of a secure communication link between all said individual lifts of said lift system.

16. The vehicle lift system of claim 11, wherein said adaptive communication system is configured to use one of said individual lifts as a polling lift to ask for data from other of said individual lifts in said lift system, wherein each of said individual lifts is capable of operating as said polling lift, wherein said adaptive communication system is configured such that each of said individual lifts replies to said polling lift with data about said individual lift, wherein said replies are heard by all of said individual lifts, wherein each of said individual lifts comprises a data buffer, wherein data from said replies of said individual lifts is stored in said data buffer of each of said individual lifts.

17. The vehicle lift system of claim 11, further comprising a remote control configured for wired communication with at least one of said individual lifts, wherein said remote control is configured to be removably attached to said at least one of said individual lifts.

18. The vehicle lift system of claim 11, wherein each of said lifts is configured to track and/or store lift data relevant to safety, maintenance, and/or proper operation of said lift system, wherein each of said individual lifts is configured to provide a notification of maintenance needs based on said lift data, wherein said user interface is programmed to include a pass code screen that prompts the operator to enter a pass code, wherein said lift system is configured to be selectively operated in a paired mode where two of said individual lifts are paired with one another and operate independently of the other of said individual lifts that are not paired, wherein said lift system is configured to lock out from movement said individual lifts that are not paired, wherein each individual lift, when initially turned on, is configured to perform a self-check of systems that control lift movement, display lift data, and/or receive commands from a lift operator, wherein said display screen is configured to display height information, weight information, and battery status information, wherein each of said individual lifts comprises an adaptive frequency hopping transceiver configured to operate on a plurality of frequencies.

19. The vehicle lift system of claim 11, wherein each of said individual lifts comprises an interface microprocessor configured to process information relating to said user interface, a lift sensor, a lift actuator, a control microprocessor configured to process information relating to said lift sensor and lift actuator, a communication microprocessor configured to process information relating to wireless communication between said individual lifts, a common area of memory shared by said interface, control, and communication microprocessors, wherein said interface, control, and communication microprocessors are configured to push and pop commands and/or data between one another using said common area of memory, wherein said adaptive communication system is configured to continuously update said common area of memory of each of said individual lifts with information about all of said individual lifts to there by provide collective intelligence that enables coordinated lifting of a vehicle.

20. A method of operating a wireless portable vehicle lift system, said method comprising:

(a) providing a plurality of substantially identical individual lifts, wherein each individual lift comprises a base, a post, a carriage, a rechargeable battery, a display screen, and a radio frequency transceiver capable of operating on multiple channels;

(b) positioning said carriages of at least two of said individual lifts into engagement with wheels of a vehicle;

(c) establishing a secure wireless communication link between at least two of said individual lifts to thereby form a lift ensemble of said individual lifts, wherein said establishing includes—

(i) a lift operator powering up a first of said individual lifts,

(ii) said first lift automatically scanning a plurality of communication frequencies or channels and determining a communication frequency or channel of minimal noise content,

(iii) said first lift wirelessly transmitting a beacon signal,

(iv) a lift operator powering up a second of said individual lifts,

(v) said second lift detecting said beacon signal and determining that said second lift is not the first of said individual lifts to be powered up, and

(vi) said first and second lifts wirelessly exchanging lift identification information; and

(d) lifting a vehicle with said lift ensemble by vertically shifting said carriages of said individual lifts of said lift ensemble in a coordinated manner, wherein during said lifting said individual lifts wirelessly share data with one another so as to coordinate said lifting using collective intelligence of said lift ensemble.

21. The method of claim 20, further comprising, using said frequency or channel of minimal noise content during said lifting of step (d) to wirelessly share data between said individual lifts.

22. The method of claim 21, further comprising, during said lifting of step (d), i) periodically scanning said plurality of communication frequencies or channels to determine a clearest communication frequency or channel and ii) using said clearest communication frequency or channel for wireless communication between said individual lifts.

23. The method of claim 20, wherein said communication frequency or channel of minimal noise content is a clearest communication channel, further comprising using said clearest communication channel for wireless communication between said individual lifts during said establishing of step (c) and/or said lifting of step (d).

24. The method of claim 20, further comprising, during said lifting of step (d), communicating lift synchronization data and emergency data among all said individual lifts in a near real time manner.

25. The method of claim 24, wherein said communicating includes one of said lifts transmitting a polling signal and the other of said individual lifts responding to said polling signal.

26. The method of claim 20, wherein said lift system comprises an adaptive communication system capable of operating on multiple frequencies or channels, wherein during said lifting of step (d) said adaptive communication system (i) communicates command and control information to all of said individual lifts of said lift ensemble and (ii) provides continuous synchronous updating of a common data buffer in each of said individual lifts, wherein said updating of said common data buffer includes transmitting height information about each individual lift in said lift ensemble to said common data buffer in each of said individual lifts.

27. The method of claim 20, further comprising operating said lift ensemble in a paired mode where two of said individual lifts raise and lower in a coordinated manner while the other of said individual lifts remain stationary.

28. The method of claim 20, wherein each of said individual lifts further comprises a lifting actuator, a height sensor, a display microprocessor, and a control microprocessor, wherein said lifting actuator is configured to vertically shift said carriage relative to said post, wherein said height sensor is configured to provide information about the position of said carriage and/or vehicle, wherein said display microprocessor is configured to process information relating to at least said display screen, wherein said control microprocessor is configured to process information relating to at least said lifting actuator and said height sensor, wherein said display microprocessor and said control microprocessor are configured to communicate with one another.

29. The method of claim 28, wherein said display microprocessor and said control microprocessor share a common area of memory.

30. The method of claim 28, wherein each of said individual lifts comprise a COP watchdog configured to reset said control microprocessor in the event of a failure of or locking of said control microprocessor.