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    • 46. 发明公开
    • Vehicle multiplex system having protocol/format for secure communication transactions
    • 车辆多播系统中,协议/格式具有用于安全传输衬套。
    • EP0117832A2
    • 1984-09-05
    • EP84630013.5
    • 1984-02-03
    • ESSEX GROUP INC.
    • Floyd, William Michael
    • B60R16/02G08C15/00
    • H04Q9/14B60R16/0315G08C25/00
    • An improved serial data protocol/format is provided in a serial multiplex system for use in an automotive vehicle electrical system which is subject to electrical noise. The protocol/format includes successive transactions between a master controller and respective remote controllers each connected to a serial multiplex bus. Each transaction is bidirectional and includes a command message transmitted by the master controller and a reply message normally transmitted by an answering remote controller. Each command message is preceded by a multibit SYNC byte. The command message includes an address byte (for a particular remote controller), a command byte, and an error check such as a cyclic redundance check byte passed on the address and command bytes. The reply message includes the address byte of the replying remote controller, a response byte indicative of its response to the command byte, and an error check such as a cyclic redundancy check byte based on the reply address and response bytes. The master controller may be caused to repeat the transmission of a command message if the address bytes, the command/response correlations or error check bytes are not verifiable, thereby enhancing the system's ability to detect and/or reject errors as might be occasioned by noise.
    • 50. 发明公开
    • Thermal relay and electric range control utilizing the same
    • 热继电器和电气范围控制使用它
    • EP0004842A3
    • 1979-10-31
    • EP79930002
    • 1979-03-29
    • ESSEX GROUP INC.
    • Willeke, Steven A.
    • H01H61/02H01H37/10
    • H01H61/02H01H37/10
    • A thermal relay construction capable of operating a pair of electrical contacts. The thermal relay includes an electrical heater of the self-regulating PTC type which is mounted upon and thermally coupled directly to a bimetal snap disc so that heat generated by the heater causes the bimetal snap disc to overcenter and operate the electrical contacts. The other electrical connection to the heater is made through a compensating blade which bears against the heater to compensate for ambient temperature effects on the thermal relay. An electric range oven control uses temperature sensitive electrical contacts in conjunction with the thermal relay to control the oven heaters.
    • 一种能够操作一对电气触点的热继电器结构。 热继电器包括自调节型PTC的电加热器,该电加热器安装在双金属卡盘上并热耦合到双金属片卡上,使得由加热器产生的热量使得双金属片卡盘偏心并操作电触点。 与加热器的另一个电气连接是通过补偿刀片制成的,该补偿刀片抵靠加热器以补偿环境温度对热继电器的影响。 电灶式烤箱控制使用温度敏感的电触点与热继电器相结合来控制烤箱加热器。