摘要:
A safety controller includes a first interrupt signal output unit outputting a first interrupt signal in a cycle synchronous with that of a first carrier signal defining a control cycle of a control target; a second interrupt signal output unit outputting a second interrupt signal in a cycle synchronous with that of a second carrier signal defining a control cycle of the control target, the first and second carrier signals having the same cycle and a predetermined phase difference; and a control unit executing tasks and controlling the control target by switching and scheduling time partitions according to outputs of the first and second interrupt signals from the first and second interrupt signal output units. The control unit stops controlling the control target upon detecting, as an abnormality related to the first and second interrupt signals, that the first and second interrupt signals are not output in a predetermined order.
摘要:
A safety controller includes a first interrupt signal output unit outputting a first interrupt signal in a cycle synchronous with that of a first carrier signal defining a control cycle of a control target; a second interrupt signal output unit outputting a second interrupt signal in a cycle synchronous with that of a second carrier signal defining a control cycle of the control target, the first and second carrier signals having the same cycle and a predetermined phase difference; and a control unit executing tasks and controlling the control target by switching and scheduling time partitions according to outputs of the first and second interrupt signals from the first and second interrupt signal output units. The control unit stops controlling the control target upon detecting, as an abnormality related to the first and second interrupt signals, that the first and second interrupt signals are not output in a predetermined order.
摘要:
Coding of the value of any number of quantities measured in a tire, for example its pressure and its temperature, is carried out using a ratio of time intervals TP/Tr, Tt/Tr. This frees the device from the effect of the time shift of the modulation system, the time shift affecting simultaneously the numerator and the denominator of said ratio.
摘要:
The present invention relates to remote control or trajectory calculation systems for missiles for example, and in particular to a message receiving device which may be mounted on the missle itself.The receiver of the invention comprises means for receiving the j sequences of the message, means for shifting each sequence by a time .DELTA.t.sub.j, means for confirming that the sequences of 1's are indeed associated with sequences of 0's, means for reading the word formed of the j sequences, j being an appropriately chosen integer.The invention applies to radar responder and any transmission carriers.
摘要:
Pulse position coding is used to transmit several channels of data from a ground radar transmitter to a receiver in an airborne, remotely-piloted vehicle. The system is designed to ignore interfering pulses, especially those which are synchronized with the transmitter's PRF, by combining a number of noise reduction devices. These include the redundant transmission of address and channel information, the transmission of true and complemented data, the tracking of channels transmitted in a predetermined order, developing an interference count to recognize synchronous pulses, comparing data received for a given channel with data subsequently received for that channel, the use of windows around the expected positions of pulses, and the use of parity. There is also a novel programming arrangement which enables several programs to be stored in a reduced amount of memory space.
摘要:
A transmitting device of light signal for remote control of television channel, sound volume, radio, tape recorder, etc, to transmit a light signal to a receiving device which is provided in the device which is to be controlled. Said light signal has at least two light pulses, i.e. first, and a second pulse and time interval Tp between said first, and a second light pulse which differs according to an operated switch, i.e. controlling matter. A delaying circuit is provided between the circuit of the switch and a gate circuit of a thyristor for producing said secondary light pulse so as to avoid controlling the gate of thyristor during an unstable condition immediately after the operation of said switch.
摘要:
In a telemeter system using a measuring probe for radiating a sound pulse signal the pulse spacing of which corresponds to information to be measured such as temperature or salinity of various depths in the ocean water, in order to prevent the echo noise signal there is provided an improved receiving system which comprises a one-bit delay circuit, a pair of integrating circuits, a pulse generator and a gate. One of the integrating circuits is controlled by the signal as received and the other is controlled by a one-bit delayed signal derived from the received signal. The pulse generator generates a pulse signal having a predetermined time duration at a predetermined level of the output from the integrating circuit, and that pulse drives the gate, so as to eliminate the echo unexpectedly received during the pulse spacing.
摘要:
A pulse dip carrier system comprises a series circuit having an electronic switch and a capacitor and being connected in parallel to an AC distribution line, and a phase shifter circuit for controlling the electronic switch by the phase shifter output. The electronic switch closes under the control of the phase shifter circuit when the phase of the line voltage of AC distribution line to a point of the zero instantaneous value thereof comes to a predetermined angle, a charging current flows in the capacitor when the electronic switch is closed whereby steep pulse dip is generated on the wave of the line voltage.