초록 ▼

A network for detecting a substance includes at least two detectors that are capable of transmitting a signal, and a remote station capable of receiving the signal. The detectors are adapted to detect a substance and transmit data that indicates the presence of that substance to the remote receiving

A network for detecting a substance includes at least two detectors that are capable of transmitting a signal, and a remote station capable of receiving the signal. The detectors are adapted to detect a substance and transmit data that indicates the presence of that substance to the remote receiving station.

대표청구항 ▼

A network for detecting a substance includes at least two detectors that are capable of transmitting a signal, and a remote station capable of receiving the signal. The detectors are adapted to detect a substance and transmit data that indicates the presence of that substance to the remote receiving

A network for detecting a substance includes at least two detectors that are capable of transmitting a signal, and a remote station capable of receiving the signal. The detectors are adapted to detect a substance and transmit data that indicates the presence of that substance to the remote receiving station. checks the response and the proper ID by determining whether a response code generated by a predetermined method based on the challenge code is included in the response from the portable device for the challenge code. 5. A controller of claim 4, wherein, said checking means decides checking failure when detecting a failure condition several times, said failure condition being a condition where the fixed code from the portable device is proper but the response code is not. 6. A controller of claim 2, further comprising a display means for displaying failure of checking when checking failed at said checking means. 7. An on-vehicle device remote controller mounted on a vehicle for controlling operation of a predetermined on-vehicle device based on communication with a plurality of portable devices, said controller comprising: ID request signal transmitting means for: intermittently transmitting at a first time interval, an ID request signal compatible with a first portable device; and intermittently transmitting at a second time interval, an ID request signal compatible with a second portable device; wherein an average of the first time interval decreases over time and an average of the second time interval increases over time as the frequency of use of the first device increases and the frequency of use of the second device decreases; ID receiving means for receiving ID signals from the first and second portable devices; checking means for checking the ID signals received at the ID receiving means with a predetermined proper ID; and device operation control means for operating the predetermined on-vehicle device when checking is successful at the checking means; wherein, the transmission interval of the ID request signal at said checking means is changed in a predetermined manner; wherein transmission of the ID request signal is controlled to be inhibited when checking fails at said checking means; and wherein transmission of the ID request signal is achieved by elongating the interval between intermittent ID request signals. 8. The controller of claim 7, wherein the average of the second time interval increases over time, provided the second portable device does not communicate with the on-vehicle device for a period of time. 9. An on-vehicle device remote controller mounted on a vehicle for controlling operation of a plurality of on-vehicle devices based on communication with a plurality of portable devices, said controller comprising: ID request signal transmitting means for intermittently transmitting an ID request signal to the plurality of portable devices at a predetermined interval; ID receiving means for receiving ID signals from the plurality of portable devices; checking means for checking the ID signals received at the ID receiving means with a predetermined proper ID; and device operation control means for controlling operation of the plurality of on-vehicle devices when checking for a first one of the plurality of portable devices is successful at the checking means, and controlling operation of a subset of the plurality of on-vehicle devices when checking is successful for a second one of the plurality of portable devices at the checking means; wherein the transmission interval of the ID request signal at said checking means is changed in a predetermined manner; wherein transmission of the ID request signal is controlled to be inhibited when checking fails at said checking means; and wherein transmission of the ID request signal is achieved by elongating the interval between intermittent ID request signals.