摘要:
It is possible to provide a vehicle and an in-vehicle communication control device capable of performing control with preferable response even under an environment where notch attenuation exists and various noises are superimposed in a cable communication using a battery line. The vehicle includes: a plurality of operation devices installed in the vehicle; sensors arranged in the respective operation devices for detecting operation amounts of the operation devices; a controller inputting the operation amounts detected by the sensors; a communication device connected to the controller and a battery line and outputting a control signal as a carrier of a different frequency band for each type of the operation devices to the battery line; a second communication device connected to the battery line and using a carrier of a frequency band of each of the operation devices as a pass band; and a second controller connected to the second communication device and controlling the control device corresponding to the operation device.
摘要:
Disclosed is a wireless communications device with strong realtime performance, giving rise to no latency in communications even if communications errors arise in the communication frame MAC header. MAC header information is used to determine whether or not the destination address of a received data frame is the address of a concerned wireless communications device (1). MAC header information allocated among a plurality of MAC headers is employed in selecting MAC header information without errors. If all MAC header information is in error, a majority determination processing unit (13) is used to effect a majority determination of the MAC header information and generate correct MAC header information. A received data extraction unit (14) removes the received frame header, etc., extracts the received data, and outputs same to an external device.
摘要:
Disclosed is a wireless communications device with strong realtime performance, giving rise to no latency in communications even if communications errors arise in the communication frame MAC header. MAC header information is used to determine whether or not the destination address of a received data frame is the address of a concerned wireless communications device (1). MAC header information allocated among a plurality of MAC headers is employed in selecting MAC header information without errors. If all MAC header information is in error, a majority determination processing unit (13) is used to effect a majority determination of the MAC header information and generate correct MAC header information. A received data extraction unit (14) removes the received frame header, etc., extracts the received data, and outputs same to an external device.
摘要:
A plurality of slave stations receive a plurality of apparatus information signals concerning apparatus to be controlled (or sensors), and a master station allots the apparatus information signals to time slots in a transmission path and receives a specified apparatus information signal with priority from the respective slave stations. A priority change information signal adder in the master station adds a priority change information signal for changing priority of the information signals transmitted from each slave station to an information transmission signal string containing a sync signal and various information signals transmitted to each slave station. A multi-element information signal separator/processor in the master station separates and processes the multi-element information signals transmitted from each slave station, on the basis of the priority change information signal. A detector/counter in each slave station detects the sync signal transmitted from the master station and counts the number of time slots following the sync signal. A transmission pattern reconstructor in the slave station reconstructs transmission patterns of the respective slave stations in accordance with the priority change information signal when a count value coincides with a predetermined value.
摘要:
Using a network in which one master station modem 105 and multiple slave station modem 106, 107, 108 are physically connected by rudder connection or bus connection with a telecommunication line 121, the measurement result of the S/N ratio between the master station and slave stations is once collected in the master station at the initialization stage, pairs of the modulation method, by which all modems can demodulate at high probability, and transmission voltage are calculated based on this data, and the calculation is transmitted to all slave stations; and at a normal transmission stage, information regarding the coordination and control of the network is transmitted in accordance with this setting. Thus, one-to-multi communication is realized, guaranteeing an access right.
摘要:
A communication apparatus installed in the trains and that in a complex station building, a station or a maintenance factory communication through feeders, trolley wires or third rails can communicate each other. The present invention can realize a low cost vehicle-facility intra communication system that provides various information services available in the train.
摘要:
Using a network in which one master station modem 105 and multiple slave station modem 106, 107, 108 are physically connected by rudder connection or bus connection with a telecommunication line 121, the measurement result of the S/N ratio between the master station and slave stations is once collected in the master station at the initialization stage, pairs of the modulation method, by which all modems can demodulate at high probability, and transmission voltage are calculated based on this data, and the calculation is transmitted to all slave stations; and at a normal transmission stage, information regarding the coordination and control of the network is transmitted in accordance with this setting. Thus, one-to-multi communication is realized, guaranteeing an access right.