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243 条记录 (耗时 0.019 秒)

    Method and apparatus for global polling having contention-based address identification
    63.
    发明授权
    Method and apparatus for global polling having contention-based address identification 失效
    全球轮询的方法和装置具有基于争用的地址识别

    公开(公告)号：US5347515A

    公开(公告)日：1994-09-13

    申请号：US859070

    申请日：1992-03-27

    申请人： Francis C. Marino

    发明人： Francis C. Marino

    IPC分类号： H04L12/10 ,  H04L12/403 ,  H04Q11/04

    CPC分类号： H04L12/4135 ,  H04L12/10 ,  H04L12/403

    摘要： A plurality of serially addressable devices connected to transmit data to or from a central controller via a two-wire polling loop has a global poll capability. The transmissions of data are via a tri-level line signal to provide both power and data transmission on a two-wire line. Global polling is initiated by a preamble recognized by each device in the loop. The preamble is followed by a single bit sequence to allow the devices to signal the central controller that one or more devices will respond to the global poll. If one or more devices will respond to the global poll, a series of bit sequences is generated by the central controller equal to the number of bits that will be transmitted by the serially addressable device to transmit its address and status. In order that only a single device respond to a global poll, if two or more devices are in contention for control of the loop to transmit their message to the central controller, each device measures the voltage on the loop and drops out of contention if it measures a digital zero while it is trying to transmit a digital one in the address field.

    摘要翻译： 经由两线轮询回路连接以向中央控制器发送数据或从中央控制器发送数据的多个可串行寻址的设备具有全局轮询能力。 数据的传输通过三电平线路信号，以在双线线路上提供电力和数据传输。 全局轮询由循环中每个设备识别的前导码启动。 前导码之后是单个位序列，以允许设备向中央控制器发信号通知一个或多个设备将响应全局轮询。 如果一个或多个设备将对全局轮询进行响应，则中央控制器产生一系列比特序列等于可由可串行寻址的设备发送的发送其地址和状态的比特数。 为了只有单个设备对全局轮询进行响应，如果两个或多个设备被竞争控制环路以将其消息发送到中央控制器，则每个设备测量回路上的电压并且如果 在地址字段中尝试传输数字时，测量数字零。

    Squeeze bottle dispensing closure with vent valve
    67.
    发明授权
    Squeeze bottle dispensing closure with vent valve 失效
    用排气阀挤压瓶子分配瓶盖

    公开(公告)号：US5169035A

    公开(公告)日：1992-12-08

    申请号：US703403

    申请日：1991-05-21

    申请人： Leo R. Imbery, Jr.

    发明人： Leo R. Imbery, Jr.

    IPC分类号： B65D47/08 ,  B65D51/16

    CPC分类号： B65D51/1644 ,  B65D47/0814 ,  B65D2205/00 ,  B65D2547/066

    摘要： A closure is provided for use in a squeeze-type container that defines a discharge opening communicating with the container interior in which the fluid product is contained. The closure includes a body for being mounted to the container over the container opening. An insert member is mounted in the body. In one embodiment, the insert member defines a dispensing orifice through which the container contents can be dispensed, and the closure body defines a vent aperture adjacent the insert member for cooperating with the insert member to define a vent passage between the container opening and the ambient atmosphere. A resilient sealing lip is defined by the insert member for sealingly engaging the interior surface of the closure body around the vent aperture in a closed position. The sealing lip is shifted out of sealing engagement to an open position when the ambient atmospheric pressure exceeds the pressure within the container, and this permits equalization of the container pressure the ambient atmospheric pressure. A lid is provided for being moved to a closed position on the closure body, and the lid has a plug member for being sealingly received in the dispensing orifice of the insert member to occlude the dispensing orifice. In another embodiment, the dispensing orifice and vent aperture are separately defined within, and by, the closure body.

    摘要翻译： 提供一种用于挤压型容器的封闭件，该容器限定与容纳内部连通的排放开口，容器内部容纳有流体产品。 封闭件包括用于在容器开口上方安装到容器的主体。 插入构件安装在主体中。 在一个实施例中，插入构件限定了分配孔，容器内容物可以通过该分配孔分配，并且闭合体主体限定邻近插入构件的通气孔，用于与插入构件配合以在容器开口和环境之间形成通气通道 大气层。 弹性密封唇由插入构件限定，用于在关闭位置密封地将封闭体的内表面围绕排气孔密封。 当环境大气压力超过容器内的压力时，密封唇从密封接合位置移动到打开位置，这样可以使容器压力达到环境大气压力的平衡。 提供盖子以移动到封闭主体上的关闭位置，并且盖子具有用于密封地容纳在插入构件的分配孔中以阻塞分配孔的插塞构件。 在另一个实施例中，分配孔和通气孔分别限定在封闭体内部和通过封闭体。

    Intrusion detection system
    69.
    发明授权
    Intrusion detection system 失效
    入侵检测系统

    公开(公告)号：US5126718A

    公开(公告)日：1992-06-30

    申请号：US511854

    申请日：1990-04-20

    申请人： Alan P. Doctor

    发明人： Alan P. Doctor

    IPC分类号： G08B13/191

    CPC分类号： G08B13/191 ,  Y10S250/01

    摘要： An intrusion detection system includes an array of infrared radiation-sensitive elements, each element comprises first and second spaced electrodes between which pyroelectric material is positioned, and each element is operative to produce a voltage proportional to the rate of change of infrared radiation incident thereon. A pair of oppositely poled detector elements is connected to a first signal processing channel and a second pair of oppositely poled detector elements is connected to a second signal processing channel. The system also includes coincidence means such that an alarm output in response is produced in response to concurrent application of intruder signals of opposite polarity to the two signal processing channels.

    Smoke and fire detection system communication
    70.
    发明授权
    Smoke and fire detection system communication 失效
    烟火探测系统通讯

    公开(公告)号：US5117219A

    公开(公告)日：1992-05-26

    申请号：US472225

    申请日：1990-01-30

    申请人： Lee D. Tice ,  Todd W. Fritz ,  Mark A. Kilcommons

    发明人： Lee D. Tice ,  Todd W. Fritz ,  Mark A. Kilcommons

    IPC分类号： G08B26/00 ,  H04Q9/14

    CPC分类号： H04Q9/14 ,  G08B26/002

    摘要： A smoke and fire detection system wherein a central controller transmits data to remote transponders on a voltage supply line by pulse code modulation (PCM) of the supply voltage, and the transponders communicate with the controller by pulse width modulated (PWM) current pulses over the voltage supply line. A transmitter in the controller supplies a nominal operating voltage to the transponders and transmits a data word comprising a plurality of data bits to the transponders over the line. The transmitter generates each data bit by switching the voltage supplied to the line from the nominal operating voltage to a first voltage corresponding to a first logical level or a second voltage corresponding to a second logical level. A decoder in each transponder derives the transmitted data word. The decoder detects each data bit by detecting the transition from the nominal voltage to the first or second voltage, and the decoder determines the logical level of each bit by measuring the transmitted voltage level immediately after detecting the transition. The transponder returns data to the controller in the form of data signals, each data signal having a duration based on the data to be returned. With such arrangement, the transponders do not require a clock or other timing circuitry to communicate with the controller. Also, the controller may vary the data rate or bit duration without interfering with the operation of the transponders.

    摘要翻译： 一种烟雾和火灾探测系统，其中中央控制器通过电源电压的脉冲编码调制（PCM）将数据发送到电压供应线路上的远程转发器，并且应答器通过脉冲宽度调制（PWM）电流脉冲与控制器通信 电源线。 控制器中的发射器向转发器提供标称工作电压，并将包含多个数据位的数据字通过线路发送到应答器。 发射机通过将从标称工作电压提供给线路的电压切换到对应于第一逻辑电平的第一电压或对应于第二逻辑电平的第二电压来产生每个数据位。 每个转发器中的解码器导出所发送的数据字。 解码器通过检测从标称电压到第一或第二电压的转变来检测每个数据位，并且解码器通过在检测到转换之后立即测量发送的电压电平来确定每个位的逻辑电平。 应答器以数据信号的形式将数据返回给控制器，每个数据信号具有基于要返回的数据的持续时间。 通过这样的布置，应答器不需要时钟或其他定时电路来与控制器通信。 此外，控制器可以改变数据速率或位持续时间，而不会干扰应答器的操作。