Communication Device and Working Vehicle Provided with the Same
First Claim
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1. A communication device mounted in a working vehicle and executing at least one of reading identification information stored in an identification component attached to a component of the working vehicle and writing the identification information to the identification component, the communication device comprising:
- a control board comprising;
a communication controller that controls an execution of the at least one of reading and writing the identification information; and
a wireless control circuit that generates output of radio waves in response to a command from the communication controller;
an antenna that is spaced from the control board and transmits the output obtained from the wireless control circuit; and
a connection cable that electrically connects the control board to the antenna, whereinthe control board comprises;
a disconnection detector that detects a disconnection of the connection cable; and
a transmission controller that interrupts the output from the wireless control circuit to the antenna when the disconnection detector judges that the connection cable is disconnected.
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Accused Products
Abstract
A reader writer (a communication device) executes at least one of reading identification information of an IC tag (an identification component) and writing the identification information to the IC tag. The reader writer includes a CPU board (a control board) that includes CPU (a controller) and a wireless control circuit to output radio waves by a command from the CPU, an antenna that is spaced from the CPU board, and a connection cable that electrically connects the CPU board to the antenna. The CPU board includes a disconnection detector that detects a disconnection of the connection cable, and a transmission controller that interrupts an output from the wireless control circuit to the antenna when the disconnection detector judges that the connection cable is disconnected.
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Citations
10 Claims
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1. A communication device mounted in a working vehicle and executing at least one of reading identification information stored in an identification component attached to a component of the working vehicle and writing the identification information to the identification component, the communication device comprising:
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a control board comprising;
a communication controller that controls an execution of the at least one of reading and writing the identification information; and
a wireless control circuit that generates output of radio waves in response to a command from the communication controller;an antenna that is spaced from the control board and transmits the output obtained from the wireless control circuit; and a connection cable that electrically connects the control board to the antenna, wherein the control board comprises;
a disconnection detector that detects a disconnection of the connection cable; and
a transmission controller that interrupts the output from the wireless control circuit to the antenna when the disconnection detector judges that the connection cable is disconnected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A communication device that is mounted in a working vehicle and executing at least one of reading identification information stored in an identification component attached to a component of the working vehicle and writing the identification information to the identification component, the communication device comprising:
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a control board comprising;
a communication controller that controls an execution of the at least one of reading and writing the identification information; and
a wireless control circuit that generates an output of radio waves in response to a command from the communication controller;an antenna that is spaced from the control board and transmits the output obtained from the wireless control circuit; and a connection cable that electrically connects the control board to the antenna, wherein the control board comprises;
a disconnection detector that detects a disconnection of the connection cable;
a transmission controller that interrupt the output from the wireless control circuit to the antenna when the disconnection detector judges that the connection cable is disconnected;
a main power supply;
a wireless power supply that generates power for the wireless control circuit from power supplied from the main power supply;
a wireless power supply controller that switches between a supply and an interruption of the power from the main power supply to the wireless power supply; and
a pull-up resistor connected to a transmission line between the control board and the antenna including the connection cable,the transmission controller comprises;
the wireless power supply controller; and
a switch command generator that generates a switch command of interrupting the supply of the power from the main power supply to the wireless power supply and transmits the switch command to the wireless power supply controller, when the disconnection detector judges that the connection cable is disconnected,the antenna comprises a pull-down resistor that connects the transmission line to a ground line, and the disconnection detector detects a voltage of the transmission line on the control board. - View Dependent Claims (10)
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Specification
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Current AssigneeKomatsu Ltd.
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Original AssigneeKomatsu Ltd.
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InventorsKawasaki, Shinpei, Tsushimi, Yasushi, Ishidou, Motoi
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current701/50
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CPC Class CodesE02F 9/0866 Engine compartment, e.g. he...E02F 9/267 Diagnosing or detecting fai...G06K 7/10009 sensing by radiation using ...G06K 7/10158 methods and means used by t...G07C 5/006 Indicating maintenanceG07C 5/008 communicating information t...
