2551 results about "Open contact" patented technology

An intelligent power management system that includes a circuit breaker containing a PLC module that spans open contacts of the circuit breaker to provide a communication path for PLC messages between the line and load sides of the circuit when the contacts are open. The contacts are motorized to permit remote operation through PLC messaging. Coupled to the PLC module is a controller, which controls the opening and closing of the motorized contacts under user control or via an adaptive load management algorithm that reduces peak power consumption and adapts a set of loads to changed power supply conditions. The controller can also dynamically alter operational current and fault threshold levels on a real-time basis based upon circuit requirements or environmental conditions. The algorithm runs a state machine and also manages loads in a limited power source environment such as when loads are powered by a generator.

The invention discloses split type direct-current charging piles for electric automobiles, a system and a method. The split type direct-current charging piles for the electric automobiles are in parallel connection to an alternating-current terminal; bus-bars are sequentially connected to one another by charging modules in charger screens of the split type direct-current charging piles through parallel contactors so as to form a loop; a master control module, a front acquiring module and a rear acquiring module of each split direct-current charging pile are connected to one another through a CAN (controller area network) bus; electric energy intelligent load distribution is implemented through the rear acquiring modules by control on switching-off of the parallel contactors; and each charging module is communicated with the master control module of the corresponding direct-current charging pile through a CAN bus, is in parallel connection with a normally open contact of a corresponding intermediate relay and is connected with the adjacent charging modules so that a CAN communication loop is formed. Each charging module is connected with the master control module of the corresponding direct-current charging pile which requires power allocation through the corresponding intermediate relay when responding power allocation; and centralized control is implemented. Moreover, a charging combination mode is flexible, the synthetic cost is low, and the utilization ratio of the charging modules is high.

A liquid crystal display driver has N common drive lines and M segment drive lines. A liquid crystal display has M segment driver leads and N times P common drive leads, P being at least two. P multiplexers are provided, each external to the liquid crystal display driver. Each of the M segment driver lines is connected with a respective one of the M segment drive leads. Each multiplexer comprising N switches, each switch defining a normally-open contact, a normally-closed contact, and a common contact. Each of the switches is connected by its common contact with a respective one of the common drive leads of the liquid crystal display. Each of the switches is connected by its normally-closed contact with a cancel signal. The N switches of each multiplexer are each connected with a respective one of the N common drive lines of the liquid crystal display driver.

The present invention discloses an open contact center formed from multiple contact center components that conform to open standards and that intercommunicate utilizing open standards. The open contact center can provide automated interactive communications with callers, can provide queue management for callers waiting to communicate with live agents, can provide skills based routing for assigning live agents to callers based upon skills of the live agents and skills needed by the callers, and can provide tooling for provisioning and monitoring the live agents. In one configuration, the contact center components can execute within a middleware solution, such as WEBSPHERE, that has IP Multimedia Subsystem capability. Additionally, the contact center components can be implemented as service oriented architecture (SOA) components that communicate over an enterprise service bus (ESB).

The present invention discloses a contact center system based upon open standards. The contact center system can include at least one agent node, a portal server, and an application server. An agent node can include a standard HTTP browser that communicates over a standard Internet Protocol network using standard protocols. The portal server can be configured to communicate with an agent node via an agent portal, which can consist of multiple agent portlets to present information. The application server can be configured to execute contact center applications that can collect and distribute information via the agent portlets and transfer calls to agents.

A contact activated vacuum assisted suction cup assembly comprising: 1) a cylindrical bellowed or corrugated cup defining a plurality of interconnected bellows or corrugations of alternating, coaxial large and small diameter areas, hereinafter “bellows”, and having; A) an open contact end; and B) a valve end including a valve seat; 2) a valve stem having first and second extremities; 3) a valve plate intermediate the open contact end and the valve end in one of the large diameter areas attached to the first extremity; and 4) a valve stop attached to the valve stem at the second extremity that can engage the valve seat in the closed position. A picking device comprising a vacuum plenum having a plurality of the previously described contact activated vacuum assisted suction cup assemblies mounted therein in plenum apertures that engage a peripheral flange about the valve end is also described.

A sensing system, sensing method, and method of producing a sensing system capable of providing a cumulative measurement capability, such as in the form of a RFID tag capable of measuring cumulative heat and humidity for continuous monitoring of storage and shipping conditions of various goods. The system includes integrated circuitry and a plurality of sensing elements, preferably having cantilevered bimorph beams. Each sensing element is responsive to an environmental condition so as to deflect toward and away from open contacts in response to changes in the environmental condition. Each sensing element produces a digital output when it contacts and closes its open contacts. The integrated circuitry interfaces with the sensing elements so that the digital outputs of the sensing elements are processed to generate a system output of the sensing system.

A series of implementations of open access sleeves for holding one or more closed containers of sterile fluid for use in medical procedures are disclosed. The open access sleeves may be adapted to provide heat to maintain the containers of sterile fluid above the ambient air temperature of the room. The provision of heat may be controlled by a control system. The control system may use a temperature measurement device to obtain a temperature representative of the container of sterile fluid and of the sterile fluid in the container. The access sleeve may be included in a device for maintaining an open volume of sterile fluid within a range of a target temperature to maintain the closed containers of sterile fluid at a temperature near target temperature for open volume of sterile fluid.

The invention discloses an automatic power distributing direct-current rapid charging machine of an electric automobile and a control method thereof. The automatic power distributing direct-current rapid charging machine comprises a charging cabinet, a first charging pile, a second charging pile and a control system. The charging cabinet is connected with an alternating-current power source. The first charging pile and the second charging pile are connected with the charging cabinet. Monitoring panels are arranged in the first charging pile and the second charging pile. Two automatic distributing units are arranged in the charging cabinet. Each automatic charging unit comprises a plurality of charging modules. The direct-current output end of each charging module is connected with a relay. A normally-open contact and a normally-closed contact of the relay are connected with the first charging pile and the second charging pile correspondingly. The charging cabinet, the first charging pile and the second charging pile are all controlled by the control system. The control strategy is that power can be distributed automatically according to a charging load; and the charging power can be distributed automatically according to state information in the charging process, so that the charging machine has the load adjusting and distributing function, and the load utilization rate is optimized.

The invention relates to an experimental tester with an automatic switching device, which comprises an adjustable single phase current output unit, an analog breaker unit, a three-phase alternate current and voltage output unit, an auxiliary relay, a central proceeding unit and a computer. The analog breaker unit comprises three independent analog breakers and operation power sources; each analog breaker circuit beaker is provided with corresponding tripping and switching instruction input port, a tripping and switching setting port and an output normally-closed contact port or normally-open contact port; normally-open contacts of two control switches and three analog breakers form voltage which is output; a common end of the central processing unit is connected with the operational power source; the output end of the central processing unit is respectively connected with the tripping and switching setting port of each analog breaker; a voltage control end of the central processing unit is respectively connected with the input ends of the two control switches and the auxiliary relay; and the central processing unit is connected with the computer, can generate various signals required by the experiment, and has the characteristics of simple structure, convenient operation and improvement on the working efficiency of the experiment.

The invention relates to a charging and travelling interlocking device for an electric automobile. The charging and travelling interlocking device comprises a low-voltage control circuit, wherein the low-voltage control circuit comprises a lead-acid battery, a relay J1, a quick charging switch, a slow charging switch, a relay J2, a key switch, an ON gear and a low-voltage electrical equipment unit, wherein an anode of the lead-acid battery is connected with one end of a control coil of the relay J1; the anode of the lead-acid battery is connected with a normally open contact of the relay J2 through a normally closed contact of the relay J1; the quick charging switch is in parallel connection with the slow charging switch and then is serially connected between the other end of the control coil of the relay J1 and the automobile body ground; one end of the control coil of the relay J2 is connected with the ON gear while the other end is connected with the automobile body ground; the normally open contact of the relay J2 is connected with the low-voltage electrical equipment unit; and the ON gear is connected with the lead-acid battery through the key switch. The charging and travelling interlocking device for the electric automobile effectively and conveniently achieves a charging and travelling interlocking function and has the advantages of safety and reliability.

The invention discloses a double-rotor disc self-excited retarder and a control method thereof. The retarder, a generating set and two rotor discs are fixedly arranged on a transmission shaft of an automobile, wherein the two rotor discs are arranged on both sides of the retarder; the retarder comprises a retarder coil, a retarder coil iron core and a retarder bracket; the generating set comprises a permanent magnet, a generating set stator coil and a generating set shell; a control unit comprises an amplifying circuit, a voltage transformation rectifier and two relays; the transmission shaft of the automobile rotates to drive the permanent magnet to rotate; a three-phase alternating voltage generated by the generating set stator coil is input into the voltage transformation rectifier; a brake signal is input into the amplifying circuit, so that a normally open contact of a first relay is closed; the current of a storage battery is input into a second relay through the normally open contact of the first relay; the second relay switches on the retarder coil; and an electromagnetic braking torque generated by the rotor disc prevents the transmission shaft of the automobile from rotating. The retarder has the advantages of power generating and retarding functions, high system radiating performance and higher braking efficiency and chassis space utilization ratio.

The invention relates to a novel six-phase permanent magnet fault-tolerant motor control system in a half-bridge circuit structure, which has the characteristic of failure isolation. The system comprises a six-phase permanent magnet fault-tolerant motor and two paths of three-phase half-bridge inverting circuits. Aiming at the six-phase permanent magnet fault-tolerant motor, one end of an A-phasewinding, one end of a C-phase winding and one end of an E-phase winding are connected with a midpoint of a corresponding bridge arm, and the lower end of the bridge arm is connected with the negativeend of a direct current bus after being connected in series with a normally-closed contact point and a PTC resistor; the other ends of all windings are connected to form a Y-shaped connecting method after being connected in series with the other normally-closed contact point; and the two normally-closed contact points in the same phase belong to the same double-connecting relay. The midpoint of the Y-shaped connecting method is connected with a midpoint of an equivalent bus series capacitor after being connected in series with the normally-opened contact point K1 to form a set of three-phase Y-shaped drive subsystems. Similarly, other three phases form a set of three-phase drive subsystems by the circuit structure. When any phase in any set generates failure, a failure subsystem is automatically reconstructed into a two-phase system, and the motor system enters a fault-tolerant running state by a failure state two-phase control algorithm of a common three-phase motor.

The invention discloses a multi-gun direct current charging pile system of an electric automobile. According to the system, multiple electric automobiles can be charged at the same time, the charging powers of the multiple electric automobiles can be allocated dynamically in real time, and the using efficiency of a charging pile is improved. The system comprises n AC-DC power supply modules, m charging guns, a microprocessor and mxn contactors; wherein the n and m are integers more than or equal to 2; each AC-DC power supply module is connected with the microprocessor through the m contactors; after the charging guns are connected with the electric automobiles, the charging parameters of the electric automobiles are obtained through the microprocessor; and the microprocessor controls the breakover of the normally open contacts of corresponding contactors, thus charging the electric automobiles through the electric automobiles connected with the contactors.

The invention discloses a failure alarm circuit for an emergency stop solenoid valve loop of a diesel engine. The failure alarm circuit consists of a stop power supply, a stand-by power supply, a first current type relay normally-closed contact, a second current type relay normally open contact, a second current type relay normally-closed contact, a third current type relay normally open contact, a voltage type relay coil, a first current type relay coil, a second current type relay coil, a third current type relay coil, an emergency stop solenoid valve, a stand-by solenoid valve, an alarm power supply, a voltage type relay normally-closed contact, a first alarm lamp and a second alarm lamp. The failure alarm circuit is simple, and can respectively alarm and carry out timely self-protection for power failure caused by failure of the stop power supply and the faults of the emergency stop solenoid valve so as to ensure the normal work of the emergency stop solenoid valve loop. The invention further provides an alarm method for the failure alarm circuit for the emergency stop solenoid valve loop of the diesel engine, wherein alarms for different fault problems are given off through different alarm lamp lightening modes.

The invention discloses a diesel generator emergent stop electromagnetic valve loop failure warning circuit. The warning circuit consists of a stop power supply, a spare power supply, a first current type relay normally closed contact, a second current type relay normally open contact, a second current type relay normally closed contact, a third current type relay normally open contact, a voltage type relay coil, a first current type relay coil, a second current type relay coil, a third current type relay coil, an emergent stop electromagnetic valve, a spare electromagnetic valve, a diesel generator, an AC/DC module, a voltage type relay normally closed contact, a first warning lamp and a second warning lamp. The warning circuit is simple, and can respectively perform the warning and timely self-protection for the failure of the stop power supply of an emergent stop electromagnetic valve loop and the failure of the emergent stop electromagnetic valve. The invention further discloses a diesel generator emergent stop electromagnetic valve loop failure warning method; and different failure problems are respectively warned through different warning lamp lightening modes.

The invention discloses a blocking against misoperation, alarming and protecting device of a high-voltage switch cabinet. The back door of the high-voltage switch cabinet prevents entering a system by mistake with electricity, and an electrified display DD2 and an electromagnetic lock DS close the back door of the switch cabinet; an electrified display DD1, an electromagnetic lock contact DS1 of the back door of the high-voltage switch cabinet and a voice alarm BJQ are connected in series to form an electrified voice prompt alarming loop; the electrified display contact DD1, a back door stroke contact QS1, an intermediate relay KB1, a normally open contact KB1 and a singlechip P3.2 signal input port are connected in series to form a singlechip 89C51 signal input circuit; the device singlechip 89C51 outputs power supply trip, unit alarming and accident recording circuits after sequential operation, thus making up the bug of an anti-misoperation system; the invention has blocking for preventing misoperation of workers, has voice prompt alarming for preventing misoperation of workers and is provided with a tripping system cutting off the power supply when workers are in dangerous voltage. The invention can ensure personnel safety of workers and avoid personal injury and death.

The invention discloses a full-electronic security computer interlocking system. The full-electronic security computer interlocking system comprises a special railway security computer, an interlocker, a control and display machine and an electronic executing unit subsystem, wherein the special railway security computer comprises two security computers as a master computer and a spare computer; each security computer comprises a CPU (central processing unit) board and multiple communication boards; data transmission and data synchronization between a first CPU module and a second CPU module of the CPU board are finished through a two-port RAM (random access memory) and interrupt operation; the CPU board and the communication boards in a same system exchange data through the two-port RAM and the interrupt operation; during system operation, the first CPU module and the second CPU module output control signals for driving a master relay; and a normally open contact of the master relay is used for controlling acting power of onboard safety relays of all the communication boards. By a working method of the full-electronic security computer interlocking system, the special railway security computer can achieve functional safety of a double 2-vote-2 platform, can achieve short-period task-level synchronization of a single computer and two computers, and can achieve seamless handover under fault conditions.

An AC cord/plug is “dead” while disconnected and goes “live” only when connected. The plug has a set of spring-loaded, normally-open contacts, each having two sets of fixed contacts and a single set of movable contacts. The movable contacts are in a spring-loaded assembly that has an iron core opposite the contacts, and the fixed contacts are in a hermetically sealed compartment shielding them from the plug's exterior. The AC plug inputs (L1, L2) are connected to one set of the normally open, fixed contacts, and the plug's socket terminals are connected to the other set of normally opened, fixed contacts. In the unplugged state, the plug's socket contacts are electrically isolated from the L1 and L2 inputs. When plugged-in, the plug's socket terminals go “live” when a magnetic circuit closes between the plug and socket that causes the plug's spring-loaded assembly to move to close the contacts.

A circuit to monitor electrical continuity through a light bulb when the light bulb is switched off, and to monitor proper functioning of the light bulb when the bulb is switched on. The circuit comprises a LED, a relay and a latching circuit portion, the latching circuit portion configured to remain latched thereby applying power to the bulb and the relay only when the bulb is switched on and lit, and the relay having a pair of normally closed contacts connected to provide an alternative path of minimal resistance to ground for low voltage applied to an incoming side of the LED, and the relay also having a pair of normally open contacts which when closed allow voltage to be applied to the outgoing side of the LED, thereby resulting in the LED lighting when and only when, the light bulb is broken. Most preferably the latching portion of the circuit comprises a silicone controlled rectifier having a trigger circuit portion configured to pulse the gate when a switched light power control line is energized. The switched light power control line is connected to the anode and a coil of the relay, and the cathode is connected to one of the normally closed contacts of the relay and to the light bulb.

Since a release voltage to a brake is applied by a plurality of series-connected contacts and at least one contact is a normally open contact of a relay for controlling a driving power supply of a motor, a control apparatus having a high safety characteristic for an industrial-purpose robot is provided, while even when fusion of a contact happens to occur, the control apparatus can firmly interrupt the application of the release voltage to the brake. Also, the control apparatus for the industrial-purpose robot is provided which need not be equipped with a power supply for releasing the brake by an operator in a manual manner.

To this end, in a control apparatus of an industrial-purpose robot (11) equipped with an electromagnetic type brake (23) which locks a shaft of a motor, the control apparatus is provided with a first relay contact (24) which is closed when the electromagnetic type brake (23) is released, and a second relay contact (22) which is closed when driving electric power is supplied to the motor; and the first relay contact (24), the second relay contact (22), and the electromagnetic type brake (23) are series-connected to a drive-purpose power supply (27) of the electromagnetic type brake (23).

The invention discloses a reverse, over-speed and stall protection safety circuit of an escalator and a moving walkway. The reverse, over-speed and stall protection safety circuit comprises an input control module, a control processing module, and an output execution module, wherein the input control module is used for detecting the running state of the escalator and the moving walkway and inputting a detected signal to the control processing module; the control processing module consists of a programmable logic device, and is used for determining whether reverse, over-speed and stall happen according to a running state signal of the escalator and the moving walkway inputted by the input control module, and for controlling the output execution module to act when reverse, over-speed and stall happen; and a normally-open contact of the output execution module is serially connected with a safety control circuit of the escalator and the moving walkway, and the normally-open contact is switched off when reverse, over-speed and/or stall happen so as to achieve the safety protection. The safety circuit provided by the invention can achieve non-operating reverse protection, over-speed andstall protection.