초록 ▼

An overvoltage suppression system is disclosed, such as for construction equipment, for protecting the construction equipment from overvoltages that may occur in day to day operations. An overvoltage suppression system for construction equipment may have a communication network that includes nodes.

An overvoltage suppression system is disclosed, such as for construction equipment, for protecting the construction equipment from overvoltages that may occur in day to day operations. An overvoltage suppression system for construction equipment may have a communication network that includes nodes. A data line may be used to electrically connect the nodes of the communication network. A semiconductor device may be electrically connected with the data line. Also, a frame of the construction equipment may be electrically connected with the semiconductor device, where the frame may be a frame common. The frame common may be adapted to include a common electrical point of the communication network.

대표청구항 ▼

We claim: 1. An overvoltage suppression system for construction equipment, comprising: a communication network, including a plurality of nodes, each of said nodes comprising a housing and a microprocessor located within said housing to provide a digital communication interface to the communications

We claim: 1. An overvoltage suppression system for construction equipment, comprising: a communication network, including a plurality of nodes, each of said nodes comprising a housing and a microprocessor located within said housing to provide a digital communication interface to the communications network; a data line to electrically connect said plurality of nodes of said communication network; a semiconductor device electrically connected with said data line; and a frame of the construction equipment electrically connected with said semiconductor device, wherein said frame comprises a conductive frame common, wherein said frame common is adapted to include a common electrical point of said communication network. 2. The overvoltage suppression system as in claim 1, wherein each of said nodes is coupled with said frame. 3. The overvoltage suppression system as in claim 1, wherein said semiconductor device comprises a thyristor. 4. The overvoltage suppression system as in claim 3, wherein said thyristor comprises a bidirectional thyristor. 5. The overvoltage suppression system as in claim 3, wherein said thyristor comprises at most two leads. 6. The overvoltage suppression system as in claim 3, wherein said thyristor comprises a thyristor with a breakdown voltage of at most about 20 volts. 7. The overvoltage suppression system as in claim 3, wherein said thyristor comprises a thyristor with an on-state voltage of at most about 2 volts. 8. The overvoltage suppression system as in claim 3, wherein said thyristor comprises a thyristor with a current capacity of at least 150 amps at 8 microsecond rise time and 20 microsecond decay time and at least 30 amps at 10 microsecond rise time and 1000 microsecond decay time. 9. The overvoltage suppression system as in claim 3, wherein said thyristor comprises a thyristor with a junction capacitance of at most about 100 Pico farads. 10. An overvoltage suppression device for construction equipment, comprising: a node including a housing, wherein within said housing is positioned a microprocessor to provide a digital communication interface and at least a portion of said housing comprises a conductor; a first data line and a second data line disposed within said housing in communication with the microprocessor; a first semiconductor device electrically connected between said conductor of said housing and said first data line; and a second semiconductor device electrically connected between said conductor of said housing and said second data line, wherein the conductor of the housing electrically connects with a frame common connecting a plurality of parts of the construction equipment, said frame common including a common electrical point of the construction equipment. 11. The overvoltage suppression device as in claim 10, wherein at least one of said first data line and said second data line comprises a differential data line. 12. The overvoltage suppression device as in claim 10, wherein said housing comprises a conductive material. 13. The overvoltage suppression device as in claim 10, further comprising: a digital input line disposed within said housing. 14. The overvoltage suppression device as in claim 10, wherein at least one of said first data line and said second data line accommodates direct current voltages in the range of 0 to 14 volts. 15. The overvoltage suppression device as in claim 10, wherein at least one of said first semiconductor device and said second semiconductor device comprises a thyristor. 16. The overvoltage suppression device as in claim 15, wherein said thyristor comprises a bidirectional thyristor. 17. The overvoltage suppression device as in claim 15, wherein said thyristor comprises at most two leads. 18. The overvoltage suppression device as in claim 15, wherein said thyristor comprises a thyristor with a breakdown voltage of at most about 20 volts. 19. The overvoltage suppression device as in claim 15, wherein said thyristor comprises a thyristor with an on-state voltage of at most about 2 volts. 20. The overvoltage suppression device as in claim 15, wherein said thyristor comprises a thyristor with a junction capacitance of at most about 100 Pico farads. 21. An overvoltage suppression system for construction equipment, comprising: a data bus; an overvoltage suppression device electrically connected with said data bus; a node electrically connected with said overvoltage suppression device, said node comprising a housing and a microprocessor located within said housing, said node being one of a plurality of nodes connected in series and dispersed throughout parts of the construction equipment; and a frame of the construction equipment electrically connected with said node, wherein said frame comprises a frame common, wherein said frame common is adapted to include a common electrical point of the construction equipment. 22. The overvoltage suppression system as in claim 21, wherein said data bus includes at least two data lines. 23. The overvoltage suppression system as in claim 21, wherein said overvoltage suppression device comprises: a housing, wherein at least a portion of said housing comprises a conductor; a first data line and a second data line disposed within said housing; a first semiconductor device electrically connected between said conductor of said housing and said first data line; and a second semiconductor device electrically connected between said conductor of said housing and said second data line. 24. The overvoltage suppression device as in claim 23, wherein at least one of said first data line and said second data line comprises a differential data line. 25. The overvoltage suppression device as in claim 23, wherein at least one of said first semiconductor device and said second semiconductor device electrically connects said data bus to said frame common. 26. The overvoltage suppression device as in claim 23, wherein said housing comprises a conductive material. 27. The overvoltage suppression device as in claim 23, wherein at least one of said first semiconductor device and said second semiconductor device comprises a thyristor. 28. The overvoltage suppression device as in claim 27, wherein said thyristor comprises a bidirectional thyristor. 29. The overvoltage suppression device as in claim 27, wherein said thyristor comprises at most two leads. 30. The overvoltage suppression device as in claim 27, wherein said thyristor comprises a thyristor with a breakdown voltage of at most about 20 volts. 31. The overvoltage suppression device as in claim 27, wherein said thyristor comprises a thyristor with an on-state voltage of at most about 2 volts. 32. The overvoltage suppression device as in claim 10, wherein said housing connects with a node, said node comprising a separate housing coupled with said frame common and a microprocessor located within said separate housing.