专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

DE2917832A1 Remote control suitable for devices in large building - can reverse power supply polarity using same line for power and signalling 未知
公开(公告)号：DE2917832A1
公开(公告)日：1980-11-13
申请号：DE2917832
申请日：1979-05-03
申请人： KUNZ KURT
发明人： KUNZ KURT , SCHWANDER GEORG
IPC分类号： E06B9/70 , H04Q9/06
摘要： Both power supply and control signals are sent to a remotely controlled device over one pair of conductors, e.g. 24VDC supply with signalling by reversing polarity. At the remote end, constant polarity power supply, for the output transducer and control circuits, is restored by a rectifier. Local control may also be provided at the remote end, e.g. for motor driven window blinds in a large building. Out of working hours, local control may be cancelled at a central controller by first switching off the supply/control voltage to release the local circuits. Then all the blinds are controlled together from the central position.

82. 发明专利

GB1567969A REMOTE CONTROL DEVICES 未知
公开(公告)号：GB1567969A
公开(公告)日：1980-05-21
申请号：GB5240477
申请日：1977-12-16
申请人： PETERSEN O
IPC分类号： H03H7/38 , G08C19/02 , H02K24/00 , H03J9/00 , H04B1/034 , H04Q9/06 , H03J3/20

83. 发明专利

DE2921712A1 未知
公开(公告)号：DE2921712A1
公开(公告)日：1979-12-06
申请号：DE2921712
申请日：1979-05-29
申请人： MONTORIO SALVATORE
发明人： MONTORIO SALVATORE
IPC分类号： H01Q3/04 , G05D3/10 , H01Q3/00 , H01Q3/02 , H04Q9/06
摘要： A device for the remote control of the angular position of an aerial rotor comprising a d.c. motor for the rotation of the rotor and a drive circuit adapted to cause the rotation of the motor in one direction when it receives as input a d.c. voltage higher than a reference value and in the opposite direction when it receives as input a d.c. voltage lower than the reference value. The device provides for a feeder, in proximity of the receiver, for generating at least one d.c. control voltage and comprising a regulator of the value of the voltage as a function of the desired angular position of the rotor of the aerial, and a regulator and stabilizor of the d.c. control voltage, located in proximity of the drive circuit of the motor, to obtain from the d.c. control voltage a stabilized constant voltage of a value lower than the minimum value of the d.c. control voltage, for the feeding of the drive circuit and the motor. The connection between the feeder and the regulator and stabilizor is effected through the cable for RF signals between the aerial and the receiver.

84. 发明专利

DE2837289A1 未知
公开(公告)号：DE2837289A1
公开(公告)日：1979-03-15
申请号：DE2837289
申请日：1978-08-26
申请人： MOLINS LTD
发明人： GREEN ROBERT JAMES , HALES GERALD A
IPC分类号： G08B25/00 , H02J13/00 , H04Q9/06
摘要： Monitoring system for an emergency stop circuit controlling a number of machines in a factory, to determine the location of an actuated stop button. The stop circuit consists of a supply line to a self-latching contactor and there is an emergency stop button in the circuit at each machine. A monitoring line runs parallel to the supply line and is connected to each section between adjacent stop buttons by high value resistors. When a voltage is applied to the supply line a current appears in the monitoring line whose magnitude depends upon the position of the actuated stop button and thus is connected to a voltage which is applied to a series of comparators driving light emitting diodes. Each comparator is provided with a different reference voltage from a resistive chain and since the L.E.D.'s are connected between the outputs of successive comparators along the chain, only the L.E.D. whose position represents the position of the actuated button is illuminated.

85. 发明专利

DE2717137A1 Remote controlled civil defence warning system - uses public switched telephone network to reach remote terminals to give alarm 未知
公开(公告)号：DE2717137A1
公开(公告)日：1978-11-02
申请号：DE2717137
申请日：1977-04-19
申请人： STANDARD ELEKTRIK LORENZ AG
发明人： MOSCH RUDOLF DIPL ING , PIEHL RALF , WITTE HORST , KRAUSER KLAUS
IPC分类号： G08B27/00 , H04M11/04 , H04Q9/06
摘要： The remotely-controlled civil defence warning system employs the public switched telephone network to reach remote terminals to give the alarm. All local switching centres as the first members of a return signalling chain send signals back to the relevant end switching centre on receipt of a signal block travelling forwards through the network. Each end switching centre checks whether the return signals from all local centres to which it is connected appear within a given time after sending the signal block.

86. 发明专利

DE2756203A1 未知
公开(公告)号：DE2756203A1
公开(公告)日：1978-06-22
申请号：DE2756203
申请日：1977-12-16
申请人： PETERSEN OLE SIMON
发明人： PETERSEN OLE SIMON
IPC分类号： H03H7/38 , G08C19/02 , H02K24/00 , H03J9/00 , H04B1/034 , H04Q9/06 , H03J1/18

88. 发明专利

CA1030224A SWITCHING CIRCUITS 未知
公开(公告)号：CA1030224A
公开(公告)日：1978-04-25
申请号：CA215108
申请日：1974-12-03
申请人： SIEMENS AG
发明人： SCHUHBAUER ERNST
IPC分类号： G05F1/46 , H04L12/02 , H04Q9/06 , H04L
摘要： Apparatus is described for switching between various current values in terminal equipment or remote units of data transmission systems using either mechanical or electronic switches. The connecting paths in a number of switches are connected in series between two current-carrying wires. Diodes polarized in the same direction are also connected between the wires and are interspersed in parallel between switch connecting paths.

89. 发明专利

FR2334258A1 Control of remote electronic appts. - requires single DC source and one connection twin wire cable 未知
公开(公告)号：FR2334258A1
公开(公告)日：1977-07-01
申请号：FR7616528
申请日：1976-06-01
申请人： SCHOTTEL WERFT
IPC分类号： G05D3/12 , G01D1/10 , G01D5/12 , G05D1/00 , G05D3/14 , H04Q9/06
摘要： Electronic control of a remote circuit utilising a single D.C. power source and a single twin-wire connecting cable. A regulating motor and a generator of a nominal value act on two integrated switching circuits, connected in an inverse parallel arrangement. Each circuit has an inverting and non-inverting input point, the output from these controlling the regulating motor via a transistor and amplifier circuit. The nominal value generator works with a sensor and two resistors forming part of a bridge network. The input to the switching circuit is taken from the cursor of a potentiometer connected across the D.C. supply.

你已经成功收藏专利！

检索式保存成功!

IPRDB