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    • 4. 发明申请
    • Security device for detecting change of air pressure and method thereof
    • 用于检测气压变化的安全装置及其方法
    • US20050068177A1
    • 2005-03-31
    • US10670758
    • 2003-09-25
    • Soon ChunSung Han
    • Soon ChunSung Han
    • G08B13/02G08B13/16G08B13/20G08B13/26G08B13/00
    • G08B13/1681G08B13/20
    • A security alarm device of the present invention detects change of indoor pressure and converts the change to electric signals (more particularly, voltage signals) with a variety of frequencies by using a sensor unit installed therein, particularly sensing a low frequency that is generated when the door opens among other converted electric signals. Then, when the electric signals corresponding to the low frequency turned out to be caused by intrusion of the object from the outside, the device immediately sound an alarm to notify the intrusion to a user in a remote place. According to the security alarm device and the method thereof, the intrusion of the object from the outside is sensed as the electric signals of the low frequency, and notifies the intrusion to the user to alarm the security.
    • 本发明的安全报警装置通过使用安装在其中的传感器单元来检测室内压力的变化并将变化转换为具有各种频率的电信号(更具体地,电压信号),特别是感测当 其他转换电信号门打开。 然后,当对应于低频的电信号被证明是由于外部物体的入侵而引起的,则该设备立即发出警报以通知入侵到远程位置的用户。 根据安全报警装置及其方法,将来自外部的物体的入侵检测为低频的电信号,并且向入侵者通知用户以报警。
    • 5. 发明授权
    • Processing of materials for uniform field emission
    • 加工用于均匀场发射的材料
    • US5857882A
    • 1999-01-12
    • US607532
    • 1996-02-27
    • Lawrence S. PamThomas E. FelterAlec TalinDouglas OhlbergCiaran FoxSung Han
    • Lawrence S. PamThomas E. FelterAlec TalinDouglas OhlbergCiaran FoxSung Han
    • H01J9/02H01J9/44
    • H01J9/025H01J2201/30457
    • This method produces a field emitter material having a uniform electron emitting surface and a low turn-on voltage. Field emitter materials having uniform electron emitting surfaces as large as 1 square meter and turn-on voltages as low as 16V/.mu.m can be produced from films of electron emitting materials such as polycrystalline diamond, diamond-like carbon, graphite and amorphous carbon by the method of the present invention. The process involves conditioning the surface of a field emitter material by applying an electric field to the surface, preferably by scanning the surface of the field emitter material with an electrode maintained at a fixed distance of at least 3 .mu.m above the surface of the field emitter material and at a voltage of at least 500V. In order to enhance the uniformity of electron emission the step of conditioning can be preceeded by ion implanting carbon, nitrogen, argon, oxygen or hydrogen into the surface layers of the field emitter material.
    • 该方法产生具有均匀的电子发射表面和低导通电压的场致发射材料。 具有大至1平方米的均匀电子发射表面和低至16V /μm的导通电压的场致发射体材料可以通过诸如多晶金刚石,类金刚石碳,石墨和无定形碳等电子发射材料的薄膜由 本发明的方法。 该过程包括通过向表面施加电场来调节场致发射材料的表面,优选地通过用保持在场的表面上至少3μm的固定距离的电极扫描场致发射体材料的表面 发射极材料和至少500V的电压。 为了提高电子发射的均匀性,调节步骤可以先将碳,氮,氩,氧或氢离子注入场致发射体材料的表面层。