摘要:
A portable remote controller for a tire status detector, includes a portable casing, a transmission circuit disposed in the casing, a low-pass filter disposed at an output side of the transmission circuit for permitting a signal with a frequency of not more than the first frequency to pass through the low-pass filter, a receiving circuit disposed in the casing, a high-pass filter disposed at an input side of the receiving circuit for permitting a signal with a frequency of not less than the second frequency to pass through the high-pass filter, a ferrite bar antenna housed in the casing and having a ferrite bar wound with an antenna coil, the antenna coil having two terminals, one of which being connected to the ground and the other being connected in common to the low-pass and high-pass filers and a duplexer composed of the low-pass and high-pass filters. The ferrite bar antenna is used both for transmission of the long wave signals and for receipt of the ultra high frequency signals.
摘要:
An optical LAN includes a master node, a plurality of slave nodes, and a plurality of optical fiber cables to configure a network. Each node transmits optical signals to the network and receives optical signals from the network. Each node includes: a light transmitting portion for transmitting optical signals to the network and an abnormality detecting portion. Based on the output level of a received optical signal, the abnormality detecting portion detects decrease in the light intensity of the light transmitting portion of the node that has transmitted the optical signal. Therefore, the master node acquires occurrence of an abnormality when an abnormality occurs in a light transmitting portion of a slave node in the network.
摘要:
Optical fiber cables interconnect a master node and a plurality of slave nodes to configure a network. A master controller transmits instruction signals each corresponding to one of the slave nodes to the network. When receiving the corresponding one of the instruction signals from the network, each slave controller adds detection result information based on the state detected by a state detecting section and transmits the instruction signal to the network as a return signal for the master node. Based on the detection result information in each return signal from the network, the master controller acquires the state of the load device that corresponds to the return signal. Therefore, the states of load devices are reliably monitored.
摘要:
An ring type optical LAN device includes a master node and a plurality of slave nodes that are interconnected by an optical fiber cable. A plurality of optical bypass transmission lines are provided in correspondence with each one of the slave nodes. Each of the optical bypass transmission lines bypasses the corresponding one of the slave nodes. Each slave node includes an E/O converter and an optical cutoff circuit. Each of the E/O converters is controlled to flash for generating an optical signal, which is transmitted to a network. When any one of the slave nodes fails such that the corresponding E/O converter is maintained in a turned on state, the associated optical cutoff circuit forcibly switches the E/O converter to a turned off state. This suppresses a network crash caused by the failure maintaining the E/O converter in the turned on state.
摘要:
An optical LAN terminal device includes an optical input connected to an external optical fiber so that an optical signal is supplied via the optical fiber to the input, an optical output connected to the optical fiber so that an optical signal is delivered via the optical fiber, a signal processor receiving an optical signal and carrying out electrical signal processing for the received optical signal, thereby being capable of generating and delivering a second optical signal, a bypass normally connecting the input and output to each other optically, a receiving branch branched off from the input or the bypass to transmit the optical signal from the input toward the signal processor, and a transmission branch branched off from the output or the bypass to transmit the optical signal from the signal processor toward the output.
摘要:
In an optical LAN system, an optical connector is provided between the input and output optical fiber cables and each of the node devices. The optical connector includes a movable body (a switch body) having a prism. The movable body is switched selectively between a first position (a first state) at which the input and output optical fiber cables are optically connected to the node device and a second position (a second state) in which the input optical fiber cable and the output optical fiber cable are optically connected to each other in such a manner as to bypass the node device. This arrangement suppresses a network crash by means of a relatively simple configuration.
摘要:
An ring type optical LAN device includes a master node and a plurality of slave nodes that are interconnected by an optical fiber cable. A plurality of optical bypass transmission lines are provided in correspondence with each one of the slave nodes. Each of the optical bypass transmission lines bypasses the corresponding one of the slave nodes. Each slave node includes an E/O converter and an optical cutoff circuit. Each of the E/O converters is controlled to flash for generating an optical signal, which is transmitted to a network. When any one of the slave nodes fails such that the corresponding E/O converter is maintained in a turned on state, the associated optical cutoff circuit forcibly switches the E/O converter to a turned off state. This suppresses a network crash caused by the failure maintaining the E/O converter in the turned on state.
摘要:
A process for producing cyclohexanone oxime is provided: (1) reacting cyclohexanone, hydrogen peroxide and ammonia in the presence of a titanosilicate catalyst to give a reaction solution containing cyclohexanone oxime, water, unreacted ammonia and unreacted cyclohexanone, (2) distilling off ammonia, (3) an extraction step, (4) mixing the organic layer obtained in step (3) with water followed by separating into an organic aqueous layers, (5) distilling off organic solvent and water to obtain a bottom product containing cyclohexanone oxime and cyclohexanone oxime, and (6) distilling off cyclohexanone and obtain a bottom product containing cyclohexanone oxime; wherein a compound selected from an oxide, an oxo acid, an oxo acid salt, an oxo acid ester and an oxo acid amide of boron or phosphorous is added to at least one of the water used in step (4) and the organic layer obtained in step (4) to be subjected to step (5).
摘要:
A process for producing cyclohexanone oxime is provided: (1) reacting cyclohexanone, hydrogen peroxide and ammonia in the presence of a titanosilicate catalyst to give a reaction solution containing cyclohexanone oxime, water, unreacted ammonia and unreacted cyclohexanone, (2) distilling off ammonia, (3) an extraction step, (4) mixing the organic layer obtained in step (3) with water followed by separating into an organic and aqueous layers, (5) distilling off organic solvent and water to obtain a bottom product containing cyclohexanone oxime and cyclohexanone, and (6) distilling off cyclohexanone and to obtain a bottom product containing cyclohexanone oxime; wherein a compound selected from an oxide, an oxo acid, an oxo acid salt, an oxo acid ester and an oxo acid amide of boron or phosphorous is added to at least one of the water used in the step (4) and the organic layer obtained in step (4) to be subjected to step (5).