Abstract:
A device for detecting the presence or absence of an object, its movement, moving direction, speed, shape, quantity and their time information without being provided with transmission means. An antenna device (1) has the function capable of receiving radio waves (EW1 to EW24) transmitted from a GPS artificial satellite. When the object (A) intercepts the reception of the radio waves (EW1 to EW24) transmitted from the GPS satellite, a detection signal is outputted. Signal processor (2) detects the object (A) by the detection signal supplied from the antenna device (1).
Abstract:
A solenoid relay driving circuit which generates an exciting signal for exciting a solenoid relay after confirming that a make contact of the solenoid relay is off. A forcedly operated type solenoid relay (4) where a make contact (4A) and a brake contact (4B) have a mutual complementary relation is used. A trigger input signal having a logic value (1) within a predetermined level range is fed to a trigger terminal (2b) of a self-retaining circuit (2) when the brake contact (4B) is on, that is, when the make contact (4A) is off. While this trigger input signal is applied, when an input signal IN having a logic value (1) within a predetermined level range is applied to a reset terminal (2a), the solenoid relay (4) is excited and the make contact (4A) is turned on.
Abstract:
This invention relates to a monitor apparatus for an alarm apparatus for making it possible to confirm the generation of an alarm sound when the alarm apparatus is remote from its driving means. The operation of the alarm apparatus (1) is turned on and off by ON/OFF operations of a drive switch (12) of a driving side (A) of the alarm apparatus, and after the alarm apparatus (1) is turned off, an alarm sound generation detection signal from a return apparatus (2) of the alarm apparatus side (B) is received by the driving side (A) of the alarm apparatus through a power feed line (a). Further, when a confirmation signal of the return of the alarm apparatus side (B) to the original normal state is received after the detection signal of the generation of the alarm sound stops, then a confirmation output (F3) of the generation of the alarm sound is generated on the driving side (A) of the alarm apparatus.
Abstract:
This device is for controlling a rotary machine having a movable part rotated by a motor. The device has a fail safe mechanism in which a signal of logical one representing that no motor current is flowing is outputted. The motor (2) receives a signal representing the permission of rotation thereof, which is the AND of the two signals: one is the OR of the signal of logical one outputted by the current sensor (3) when no motor current flows and the signal of logical one outputted by the rotation sensor (4) when the movable part is rotating; and the other is the start signal outputted when the start switch of the motor (2) is turned on. Thus the motor (3) can be started by enabling the application of the motor current when the movable part is in rest.
Abstract:
A circuit for judging the rotation of a motor, and an apparatus for confirming motor stop using this circuit. Threshold value is judged by the use of a fail-safe two-input window comparator by inputting a signal from a rotation sensor for detecting the rotation of a motor. More specifically, a predetermined threshold value range (window) is set to each of the terminals of the window comparator. When the sensor and the judgement circuit are normal and, moreover, the motor is at halt, a signal level inputted to each terminal is within the range of the window, and the window comparator outputs a logical value "1". When the sensor or the judgement circuit is out of order, the signal level of one of the input terminals is out of the range of the window, and thus the comparator output is logic 0. When the motor is rotating, the signal level of the other input terminal is out of the range of the window, so that the comparator output is logic 0. In this way, the stop state of the motor can be distinguished from its inertial rotation, and can be detected reliably.
Abstract:
In an automatic ticket examining machine which permits the passage of an owner of an inserted ticket when the ticket satisfies a predetermined condition, a conventional examining machine always uses a single ticket, returns a ticket which is not used up by the passenger, and accepts a used-up ticket into the machine. Therefore, there is no record of the number of passengers using the ticket examining machine whose tickets have been accepted, and there is no record, either, of the passengers as to the rejected tickets. This invention separates one ticket inserted into the machine in to a ticket to be returned and a ticket to be retained, returns the former to the passenger and retains the latter in the machine, in order to solve the problem described above. Since the returned ticket is discharged to a take-out port irrespective of the direction from which the ticket was inserted, the time before the next passenger inserts the ticket can be shortened, and the efficiency of processing the passengers can be improved.
Abstract:
A movable body controlling device for improving the flexibility and maintainability of an operation control system for movable bodies in which the running control of movable bodies can be effected by allowing ultrasonic signals to be transferred between movable bodies without any intervention by a ground device. An ultrasonic signal transmitter (1) is provided on a train (A) and an ultrasonic signal receiver (10) and a signal-processing circuit (13) are provided on another train (B), timings of transmitting and receiving ultrasonic signals are synchronised by means of a timing signal-generating circuit (2, 11) provided on respective trains, and ultrasonic signals are transmitted and received via a metallic transmitting medium (30). The signal-receiving train (B) measures the transmitting time of ultrasonic signals by means of the signal-processing circuit (13) and produces information needed to control the trains based on the measured value.
Abstract:
A counting device having an excellent fail-safe function. According to a first invention, a counter (1) counts pulse signals (P1) to be counted and then counts the cycles of a high-frequency signal (P2). When the frequency of the high-frequency signal (P2) is a predetermined value, a frequency judging circuit (30) generates a judgement signal representing that the counter is normal. According to a second invention, a counter (100) is preset by a preset signal, the counter resetting is confirmed based on the output of a self-hold circuit (102), and another self-hold circuit (104) generates a count output. According to a third invention, such a counting device is used as a timer circuit (203, 300, 400) to determine the rate of generation of the revolution detection pulse signal (Ip) generated based on a sensor signal, thereby detecting the stop of revolution of a rotating body.
Abstract:
A planar biaxial electromagnetic actuator having two movable plates (12A and 12B) perpendicular to each other. Two static magnetic field generating means (4 and 5) are arranged on both sides of the plates (12A and 12B) in a direction of one diagonal of one of the plates (12A and 12B) in such a way as to face each other. A static magnetic field is impressed upon the plates (12A and 12B) and a magnetic force resulting from the interaction between the magnetic field and the electric currents flowing through driving coils (15A and 15B) is applied to the plates (12A and 12B) so as to drive the plates (12A and 12B). Thus the number of parts of the static magnetic field generating means is small, the structure of the actuator is simple, and the manufacturung cost is low.
Abstract:
A fail-safe signal transmitter whose output signals do not include errors even if multiple troubles occur in its circuits inclusive of a power supply device. Particularly, the transmitter is provided with a power supply monitor device, which includes a fail-safe window comparator and a fail-safe on-delay circuit for monitoring the power supply device. The output signal from the transmitter represents the conjunction of a power supply monitor signal, a signal to be transmitted, and a carrier.