Controlling system for safety, a controlling method for safety, a safety switch and an escalator system
AssigneeOtis Elevator Company
InventorsHaizhong Zhong, Huajia Guo, Yijun Guo
Life of this patent
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Abstract
A safety control system includes: a plurality of safety switches connected in series to form a safety circuit; a plurality of wireless communication modules, each wireless communication module is associated with at least one of the safety switches, such that each of the wireless communication modules is configured to a signal indicating a state of a safety switch with which it is associated; and a controller including a control-site communication module, the control-site communication module configured to receive signals from the wireless communication modules, such that the controller obtains states of the safety switches based on the signals.
Claims15
A safety control system for a conveyer system, wherein the safety control system comprises:
- a plurality of safety switches connected in series to form a safety circuit;
- a plurality of wireless communication modules, wherein each wireless communication module is associated with at least one of the safety switches, such that each of the wireless communication modules is configured to send a signal indicating a state of a safety switch with which it is associated;
- and
- a controller comprising a control-site communication module, wherein the control-site communication module is configured to receive signals from the wireless communication modules, such that the controller obtains states of the safety switches based on the signals;
- wherein the plurality of wireless communication modules are arranged in a tree network topology, wherein in the tree network topology each wireless communication module communicates with an adjacent wireless communication module.
A safety control method for a conveyer system, wherein the safety control method comprises:
- sending, by wireless communication modules associated with safety switches, signals indicating states of the safety switches associated, wherein each of the wireless communication modules is associated with at least one of the safety switches;
- and
- receiving, by a control-site communication module of a controller, the signals sent by the wireless communication modules, such that the controller is informed of the states of the safety switches based on the signals;
- wherein the wireless communication modules are arranged in a tree network topology, wherein in the tree network topology each wireless communication module communicates with an adjacent wireless communication module.
A detection method for a conveyer system, the conveyer system comprising a plurality of safety switches connected in series to form a safety circuit and a controller and wireless communication modules, wherein each of the plurality of safety switches is associated with a wireless communication module;
- the detection method comprising:
- detecting whether the safety circuit is connected to the conveyer system after the conveyer system is powered on;
- and
- initiating a detection of the safety circuit when the safety circuit is connected to the conveyer system;
- wherein the wireless communication modules are arranged in a tree network topology, wherein in the tree network topology each wireless communication module communicates with an adjacent wireless communication module.
An escalator system, wherein the escalator system comprises a safety control system including:
- a plurality of safety switches connected in series to form a safety circuit;
- a plurality of wireless communication modules, wherein each wireless communication module is associated with at least one of the safety switches, such that each of the wireless communication modules is configured to send a signal indicating a state of a safety switch with which it is associated;
- and
- a controller comprising a control-site communication module, wherein the control-site communication module is configured to receive signals from the wireless communication modules, such that the controller obtains states of the safety switches based on the signals;
- wherein the plurality of wireless communication modules are arranged in a tree network topology, wherein in the tree network topology each wireless communication module communicates with an adjacent wireless communication module.
Dependencies are inferred from the claim text.