Sweeping machine

• US 8,894,773 B2
• Filed: 08/19/2009
• Issued: 11/25/2014
• Est. Priority Date: 09/09/2008
• Status: Expired due to Fees

• Current Assignee: Tennant Company
• Original Assignee: Tennant Company
• Inventors: Riach, Alan Bryson, Galashan, Andrew Francis Robert
• Primary Examiner(s): Kornakov, Michael
• Assistant Examiner(s): CAMPBELL, NATASHA N.
• Application Number:
  US13/062,545
• Publication Number:
  US 20110180104A1
• Time in Patent Office: 1,924 Days
• Field of Search: 134/18, 134/21, 153/403
• US Class Current: 134/18
• CPC Class Codes: E01H 1/00 Removing undesirable matter from roads or like surfaces, with or without moistening of the surface for snow or ice E01H5/00; cleaning tramway rails E01H8/00; obstruction removers on vehicles B60R19/00; in combination with application of bitumen or the like E01C19/16; in combination with application of traffic line E01C23/16 ; Sweeping apparatus, particularly for lawns A01G20/30, A01G20/40; removing undesirable matter from floors and similar surfaces A47L5/00 - A47L13/00
• CPC Class Codes: G01C 21/3469 Fuel consumption; Energy use; Emission aspects
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A method of operating a sweeping machine, including a battery, a positioning receiver, a battery charge monitoring system and a computer, and having a cleaning and a transport mode of operation The method comprising the steps of: a) providing the computer with the location of a charging station, b) using the positioning receiver to provide the computer with the location of the sweeping machine, c) using the computer to provide an estimate of an amount of energy required to drive the sweeping machine from its location to the charging station in the transport mode, d) using the battery charge monitoring system to provide the computer with the amount of energy remaining in the battery, e) using the computer to compare the estimate with this amount of energy, and f) providing an operator notification when the amount of energy remaining in the battery falls below a predetermined amount of the estimate.

Claims

1. A method of operating an operator driven road-going sweeping machine, the sweeping machine including a battery for powering a rotating brush system, a dirt transportation system for transporting brushed dirt into a hopper and a transmission system,

the sweeping machine having a cleaning mode of operation where at least one of the rotating brush system and dirt transportation system is operating and a transport mode of operation where neither of the rotating brush system and dirt transportation system are operating,

the sweeping machine further including a positioning receiver for monitoring the location of the sweeping machine, a battery charge monitoring system for monitoring an amount of energy remaining in the battery and a computer,

the method comprising the steps of:

a) providing the computer with the location of a charging station,

b) using the positioning receiver to provide the computer with the current location of the sweeping machine,

c) while the sweeping machine is operating in cleaning mode, using the computer to provide an estimate of an amount of energy required to drive the sweeping machine from its current location to the charging station in the transport mode,

d) using the battery charge monitoring system to provide the computer with the current amount of energy remaining in the battery,

e) using the computer to compare the estimate with the amount of energy remaining in the battery, wherein when the amount of energy remaining falls below the predetermined amount of the estimate, operation of at least one of a rotating brush system and a dirt transportation system is disabled, and

f) providing an operator notification when the amount of energy remaining in the battery falls below a predetermined amount of the estimate, wherein the notification comprises a visual and/or audible notification.

2. The method as defined in claim 1 in which the dirt transportation system is one of a vacuum system and a elevator system.

3. The method as defined in claim 1 in which the predetermined amount of the estimate is at least 100% of the estimate.

4. The method as defined in claim 1 in which the predetermined amount of the estimate is at least 110% of the estimate.

5. The method as defined in claim 1 in which the predetermined amount of the estimate is at least 120% of the estimate.

6. The method as defined in claim 1 in which the predetermined amount of the estimate is at least 130% of the estimate.

7. The method as defined in claim 1 including the step of providing the computer with a map showing a route from the current location to the charging station,

wherein the estimate is based on using the route.

8. The method as defined in claim 1 including

providing the computer with the altitude of the current location of the sweeping machine,

providing the computer with the altitude of the charging station, and

wherein the estimate is based on the difference in altitudes of the current location and the charging station.

9. The method as defined in claim 1 including the step of providing the computer with a map showing a plurality of routes from the current location to the charging station, using the computer to estimate an amount of energy required to drive the sweeping machine from its current location to the charging station in the transport mode via each of the plurality of routes, and indicating to an operator the route estimated to require the least amount of energy.

10. The method as defined in claim 9 wherein the computer provides instructions to an operator to take the route estimated to require the least amount of energy.

11. The method as defined in claim 1 in which, when the amount of energy remaining falls below the predetermined amount of the estimate, the maximum speed of the sweeping machine when operating in the transport mode is limited.

12. The method as defined in claim 1 in which, when the amount of energy remaining falls below the predetermined amount of the estimate, the maximum acceleration of the sweeping machine when operating in the transport mode is limited.

13. The method as defined in claim 1 wherein the current location of the sweeping machine is determined using a GPS system.