专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US3641547A Line security system 失效
标题翻译：线路安全系统
公开(公告)号：US3641547A
公开(公告)日：1972-02-08
申请号：US3641547D
申请日：1970-05-25
申请人： ALARMTRONICS ENG INC
发明人： REISS MARTIN H , COTTER WILLIAM L
IPC分类号： G08B29/06 , G08B29/12 , G08B13/22
CPC分类号： G08B29/123 , G08B29/06
摘要： A system for insuring the security of electrical transmission lines extending between a monitor station and a remote station utilizes a voltage source at the monitor station which impresses an AC voltage signal on the transmission lines. At the remote station, the AC voltage signal is rectified and the rectified signal is applied to a current regulator which provides a quiescent pulsed direct current of constant level to the transmission lines. The current regulator is arranged to provide a higher alarm current when an intruder is detected at the remote station. At the monitoring station, a shorted line fault detector provides a signal when a reversal in the direction of normal current flow occurs in the transmission lines, an open line fault detector provides a signal when a drop in current below the quiescent current level is detected, and an alarm current fault detector provides a signal when a rise in current above the quiescent current level is detected. The impressed voltage is periodically reduced in amplitude to a level which barely sustains the minimum quiescent current level to test line impedance.
摘要翻译：用于确保在监测站和远程站之间延伸的电传输线路的安全性的系统利用在监测站处的电压源，其在传输线上施加AC电压信号。在远程站，交流电压信号被整流，并且整流信号被施加到电流调节器，其向传输线提供恒定电平的静态脉冲直流电流。当在远程站检测到入侵者时，电流调节器被设置成提供更高的报警电流。在监控站，短路故障检测器在传输线路中发生正常电流方向发生反向时提供信号，当检测到低于静态电流电平的电流降低时，开路故障检测器提供信号，并且当检测到高于静态电流电平的电流的上升时，报警电流故障检测器提供信号。外加电压的幅度周期性地减小到几乎不能维持最小静态电流电平以测试线路阻抗的水平。

42. 发明授权

US3588891A Self-monitoring field-contacts for automatic alarm systems 失效
标题翻译：自动报警系统的自我监测现场联络
公开(公告)号：US3588891A
公开(公告)日：1971-06-28
申请号：US3588891D
申请日：1968-03-07
申请人： BETA CORP
发明人： PORTER LESTER H JR
IPC分类号： G08B29/04 , G08B29/06 , G08B29/00
CPC分类号： G08B29/06 , G08B29/04
摘要： A SELF-MONITORING FIELD-CONTACT CIRCUIT FOR PROVIDING AN ALARM IN AUTOMATIC ALARM OR ANNUNCIATOR SYSTEMS SHOULD THE WIRES TO THE FIELD-CONTACTS BECOME BROKEN OR SHORTED. A UNIPOLARITY OPERATED SWITCHING CIRCUIT BETWEEN THE FIELD-CONTACT TO BE MONITORED AND AN ALARM INDICATOR UNIT IS TRIGGERED BY A CAPACITOR CHARGING CIRCUIT IN RESPONSE TO EITHER (A) THE CLOSING OF A NORMALLY OPEN FIELD-CONTACT BECAUSE OF A MALFUNCTION OF THE MONITORED EQUIPMENT OR (B) THE BREAKAGE (OPENING) OR SHORTING OUT OF THE FIELD-CONTACT WIRES.

43. 发明授权

US3252156A Alarm annunciator including detection of breaks, grounds, and a break followed by a ground on a monitored line 失效
标题翻译：报警器包括检测断路，场地和断路，并在监控线路上接地
公开(公告)号：US3252156A
公开(公告)日：1966-05-17
申请号：US30976163
申请日：1963-09-18
申请人： AMERICAN DISTRICT TELEGRAPH CO
发明人： MUEHTER MANFRED W
IPC分类号： G08B13/22 , G08B29/06
CPC分类号： G08B29/06 , G08B13/22

44. 发明授权

US2556363A Alarm system with circuit integrity checking means 失效
标题翻译：带电路完整性检测手段的报警系统
公开(公告)号：US2556363A
公开(公告)日：1951-06-12
申请号：US5074448
申请日：1948-09-23
申请人： LORD TABER COMPANY
发明人： LORD KENNETH M , BREDESEN PHILIP N
IPC分类号： G08B29/06
CPC分类号： G08B29/06

45. 发明授权

US2075822A Alarm system 失效
公开(公告)号：US2075822A
公开(公告)日：1937-04-06
申请号：US54588131
申请日：1931-06-22
申请人： MILLER HAROLD B
发明人： MILLER HAROLD B
IPC分类号： G08B29/06 , G08B29/16
CPC分类号： G08B29/16 , G08B29/06

46. 发明授权

US1679228A Method and apparatus for testing signaling systems 失效
标题翻译：用于测试信号系统的方法和装置
公开(公告)号：US1679228A
公开(公告)日：1928-07-31
申请号：US75521424
申请日：1924-12-11
申请人： ROBERT L MCELROY
发明人： NOLEN JAMES G
IPC分类号： G08B29/06 , G08B29/14
CPC分类号： G08B29/14 , G08B29/06

47. 发明授权

US1036620A Electric signaling system. 失效
公开(公告)号：US1036620A
公开(公告)日：1912-08-27
申请号：US1908414817
申请日：1908-02-07
申请人： SIMMEN AUTOMATIC RAILWAY SIGNAL COMPANY
发明人： HAWLEY KENT A
CPC分类号： G08B29/06 , B60T17/228

48. 发明授权

US12151131B1 Fire panel end of line supervision monitoring 有权
公开(公告)号：US12151131B1
公开(公告)日：2024-11-26
申请号：US18319275
申请日：2023-05-17
申请人： Tyco Fire & Security GmbH
发明人： Adam Elijah Siegel , Daniel Paul Cianfrocco
IPC分类号： G08B29/04 , A62C37/50 , G08B7/06 , G08B29/06
CPC分类号： A62C37/50 , G08B7/06 , G08B29/043 , G08B29/06
摘要： A fault sensing circuit is provided in a remote device configured to be connected to an end of line resistor (EOLR) that is used to detect wiring faults. The fault sensing circuit includes a current monitoring subcircuit configured to detect when an input current of the remote device has crossed a fault threshold corresponding to a fault in the remote device. The fault sensing circuit further includes a switching subcircuit connected to the current monitoring subcircuit and the EOLR. The switching subcircuit is configured to electrically connect a fault resistor in parallel with the EOLR to change a value of an end of line resistance for a fault indication when the input current of the remote devices has crossed the fault threshold.

49. 发明公开

US20240382792A1 FIRE PANEL END OF LINE SUPERVISION MONITORING 审中-公开
公开(公告)号：US20240382792A1
公开(公告)日：2024-11-21
申请号：US18319275
申请日：2023-05-17
申请人： Tyco Fire & Security GmbH
发明人： Adam Elijah SIEGEL , Daniel Paul Cianfrocco
IPC分类号： A62C37/50 , G08B7/06 , G08B29/04 , G08B29/06
CPC分类号： A62C37/50 , G08B7/06 , G08B29/043 , G08B29/06
摘要： A fault sensing circuit is provided in a remote device configured to be connected to an end of line resistor (EOLR) that is used to detect wiring faults. The fault sensing circuit includes a current monitoring subcircuit configured to detect when an input current of the remote device has crossed a fault threshold corresponding to a fault in the remote device. The fault sensing circuit further includes a switching subcircuit connected to the current monitoring subcircuit and the EOLR. The switching subcircuit is configured to electrically connect a fault resistor in parallel with the EOLR to change a value of an end of line resistance for a fault indication when the input current of the remote devices has crossed the fault threshold.

50. 发明公开

US20240331514A1 METHOD OF INSTALLING A SECURITY ALARM SYSTEM AND WIRELESS ACCESS POINT 审中-公开
公开(公告)号：US20240331514A1
公开(公告)日：2024-10-03
申请号：US18738366
申请日：2024-06-10
申请人： 1010210 B.C. Ltd.
发明人： Julian Paul CARLSON , Paul Justin CARLSON
IPC分类号： G08B13/14 , G08B13/196 , G08B19/00 , G08B25/10 , G08B29/06 , G08B29/16
CPC分类号： G08B13/1436 , G08B13/19697 , G08B19/005 , G08B29/06 , G08B29/16 , G08B25/10
摘要： There is provided a method of installing a wireless access point so as to inhibit detection thereof within the interior of a home. The method includes disconnecting one of a doorbell chime, a smoke detector or a carbon monoxide detector of a building from existing wiring thereof. The one of the doorbell chime, smoke detector or carbon monoxide detector is in an existing location of the home which is central and elevated. The method includes removing the doorbell chime from the existing location. The method includes installing in the existing location the wireless access point. The method includes connecting the existing wiring to the wireless access point so as to receive power therefrom.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式