94 results about "Relay control systems" patented technology

A device relay control synchronizes a primary control display device with one or more other display devices connected over a network. The system operates independently, without the need of specialized hardware, and requires only a network connection. The control facilitates synchronization, for example, between a teacher's manual and a student book in a digitized teaching environment, allowing a teacher to facilitate a page turn event on a student book without diverting attention from the teacher's manual.

The present invention relates to a relay control system and a control method thereof, and more particularly, to a relay control system and a control method thereof capable of determining whether an unrecoverable failure of a relay due to an unexpected environment, namely, whether the relay is fused, by measuring a voltage on a relay in real time while a battery unit operates in a secondary cell battery using DC power.

A relay control system with a fault diagnosis function comprises a control module, a driving module, a relay module and a fault handling module. The control module can conduct self-inspection after the system is powered on, can transmit a fault to the fault handling module when the fault is detected in the self-inspection process, and can control the driving module to conduct self-inspection when no fault is detected in the self-inspection process. The driving module is used for transmitting a fault to the fault handling module when the fault is detected in the self-inspection process, can detect whether any fault exists in a SPI bus and whether a plurality of relays are off line when no fault is detected in the self-inspection process, and can transmit faults to the fault diagnosis module when faults exist in the SPI bus or the plurality of relays are off line. The fault handling module is used for correspondingly processing the received faults. The relay control system with the fault diagnosis function can detect faults of the relays and control circuits of the relays timely and handle the faults correspondingly.

A Long Term Evolution (LTE) network delivers a media service that uses an Access Point Name (APN) Quality-of-Service (QoS) Class Identifier (QCI) to serve User Equipment (UE) over a wireless relay. A relay control system transfers a session request indicating the APN QCI to a wireless base station serving the wireless relay. The base station and the wireless relay configure a wireless network bearer to use the APN QCI. Responsive to the network bearer configuration, the wireless relay transfers a relay bearer request for the APN QCI to the relay control system. The relay control system returns a session request to the wireless relay. The wireless relay and the UE then configure a wireless access bearer to use the APN QCI. The wireless relay exchanges user media over the wireless access bearer and the wireless network bearer between the UE and the wireless base station using the APN QCI.

The invention discloses a contact feedback type relay control system and relates to the electronic and electrical field. The control system comprises a single chip microcomputer, a plurality of relay driving circuits and a plurality of relay control circuits, wherein the single chip microcomputer outputs a plurality of channels of control signals and are connected with signal input ends of the plurality of relay driving circuits respectively, each of the plurality of relay driving circuits adopts a Darlington transistor array chip which comprises an emitting electrode, a common port, a plurality of signal input ends and a plurality of driving signal output ends, driving signal output ends and signal input ends are in the one-to-one correspondence relationship, emitting electrodes are grounded, common ports are connected with a power supply, one end of each of relay control circuits is connected with one driving signal output end of relay driving circuits, the other end of each of relay control circuits is connected with the power supply. According to the contact feedback type relay control system, the structure of an input control circuit is changed, so that on the premise that the relay closing is guaranteed, the current of the control circuit can be reduced, the voltage at two ends of a relay on the input side can be reduced, and the power consumption required by controlling of the relay can be reduced.

An underwater robot sea search system relates to an underwater robot, and comprises a water surface control system, an underwater relay control system and an underwater control system; the water surface control system comprises an energy acquisition subsystem, a display subsystem, and an order control subsystem; the underwater control system comprises the underwater robot, various underwater sensor modules, a video acquisition module, an underwater camera module and a power drive module; an output end of the energy acquisition subsystem is respectively connected with an input end of the order control subsystem, an input end of the display subsystem, and an input end of the underwater relay control system; an output end of the order control subsystem is connected with an input end of the underwater relay control system; the underwater relay control system is respectively connected with various underwater sensor modules, the video acquisition module, the underwater camera module and the power drive module; an output end of the power drive module is connected with the underwater robot; an output end of the underwater relay control system is connected with an input end of the display subsystem. The underwater sea search system can freely switch between a planktonic modal and a creep modal.

The invention relates to an automobile sunshade with an annular ambient lamp, which includes a mirror EPP, a skeleton subassembly, a back EPP which are successively connected; A cosmetic mirror assembly is arranged on the skeleton sub-assembly, characterized in that: the cosmetic mirror assembly includes a mirror cover, a cosmetic mirror, an annular LED illumination light guide integrated board, acosmetic mirror assembly base, and a PCB board; A switch magnet is arranged in that cover of the cosmetic mirror assembly, the cosmetic mirror assembly base comprises an annular substrate and a cosmetic mirror fixing plate, the front side of the cosmetic mirror assembly base is respectively connected with the cosmetic mirror and an annular LED lighting integrated plate, and the back side of the cosmetic mirror assembly base is connected with the PCB board; The ring LED illumination light guide integrated board comprises an annular anti-bright spot bar, an annular light guide board and an annular LED integrated circuit board which are connected in turn. The annular LED integrated circuit board is connected with the PCB board, and the PCB board comprises a Hall switch and a CPU power-off delay time relay control system.

The present invention provides a relay control module, a control method thereof and a relay control system and relates to the electronic field. The relay control module comprises a microprocessor, a relay, a communication module, an input assembly and an output assembly. The microprocessor is respectively coupled to the relay, the communication module, the input assembly and the output assembly. The communication module is used for receiving and/or sending modifiable control parameters. The input assembly is used for acquiring signal data. The microprocessor is used for storing an encryption algorithm and a secret key matched with the encryption algorithm. The microprocessor is also used for encrypting control parameters based on the encryption algorithm and then sending the control parameters to the communication module, or decrypting the control parameters received by the communication module based on the secret key. The relay control module can alleviate the problem in the prior art that a current relay control module is single in control mode, narrow in application range and unsafe in communication.

The invention discloses a relay control circuit. The relay control circuit comprises a micro control unit, a logic reverse unit, a first switch unit and a second switch unit, wherein when the relay control circuit is used for controlling a relay to switch on, the micro control unit is used for controlling the switch-off of the first switch unit so as to allow the relay to switch on, and the micro control unit controls the logic reverse unit to output a first logic signal for controlling the switch-off of the second switch unit so as to allow the relay to switch on; and when the relay control circuit is used for controlling the relay to switch off, the micro control unit is used for controlling the first switch unit to switch on so as to allow the relay to switch off, and the micro control unit controls the logic reverse unit to output a second logic signal for switching on the second switch unit so as to allow the relay to release induced electromotive force produced by a switch-off action through the second switch unit. The switch of the relay is switched off rapidly and correctly and faulty operation is avoided. The invention also provides a relay control system.

The invention relates to an electronic control system of a hoisting machine, in particular to an alternating current dual-control and high-voltage matrix frequency-conversion electronic control system of the hoisting machine. The electronic control system provided by the invention comprises a high-voltage vacuum switch cabinet (A), a high-voltage matrix frequency converter cabinet (B) and an operating station (E), wherein a transformer cabinet, two power cabinets, a switching cabinet and a control cabinet are arranged in the high-voltage vacuum switch cabinet; the high-voltage vacuum switch cabinet supplies a three-phase power supply to the power cabinets through the transformer cabinet; two sets of PWM (Pulse Width Modulation) control systems are installed in the control cabinet and are respectively in control connection with the power cabinets; the switching cabinet is also in control connection with the power cabinets; the operating station (E) is in control connection with the switching cabinet; and the power output ends of the two power cabinets are respectively connected with an electromotor through the switching cabinet. The electronic control system provided by the invention adopts a vacuum contactor to control frequency-conversion switching, forms the switching of a relay control system comprising intermediate relays with excellent performance and provides reliable control equipment to the energy saving and safety of the hoisting machine in coal mines or mines.

The invention discloses a UAV (unmanned aerial vehicle) relay control system and method. Relay control of a UAV is realized through transfer of control right of a controller, the position of the UAV is judged before handover of the control right, and the control right is transferred if judgment is qualified. According to the scheme, the UAV is controlled in a relay manner to perform inspection work of power distribution lines, the operation time of an operator can be saved, energy loss of the UAV can be reduced, the work efficiency is effectively improved, and the economic cost is saved effectively; the UAV can be more effectively and accurately controlled through relay control, the probability of collision and damage of the UAV can be reduced; defects which are not easily found on front and rear lines close to a power distribution pole tower are better found, and the work quality and efficiency of inspection are guaranteed.

The invention relates to a relay control apparatus, a control system and control methods. The relay control apparatus receives control signals output by a master control computer, and outputs driving signal to connect or disconnect the relay. An interface module transmits control signals for data communication among control apparatuses. A control module receives the control signals output by the interface module, verifies the integrity of the control signals and parses parsing control parameters. If the control signals are complete and the control parameters are valid, the control module outputs an execution signal for controlling on/off of the relay, and outputs a state signal indicating execution control signal to the master control computer by the interface module. The driving module receives execution signal and outputs the driving signal after amplifying the execution signal. The invention further provides a control method for the relay control apparatus, a relay control system employing the relay control apparatus, and a control method of the relay control system.

The invention discloses a multi-functional integration-type gas controller of a dual-purpose fuel tanker, comprising a microprocessor, a gas jetting control system, an on-off state conversion control system, a pressure reducer solenoid valve, a fuel pump switching-off relay control system, an ignition advance angular signal control system, a fuel spray nozzle control system, a rotating speed signal sampling processing system, a crankshaft position sensor and a camshaft sensor. The invention also discloses a gas jetting time correcting method of the integration-type gas controller of the dual-purpose fuel tanker, comprising the following steps: starting the technological process; obtaining gasoline injection time Tr in a current working condition; checking a gasoline map to obtain theoretical injection time Tt of the current working condition; calculating a correction factor D; calculating a low-speed corrected value in the current working condition according to the change tendency of D; calculating corrected value of a gas-gasoline map; correcting gas injection time by using the corrected value of the gas-gasoline map; and finishing the technological process. In the invention, a timing advance processor (TAP) is calibrated in real time, the precision of a timing advance angle can be improved and the maximum efficacy of an engine is achieved.

The invention discloses an automatic relay control alarm device based on a fire accident, which comprises a shell. An induction cavity with a forward opening is formed in the shell; a contact cavity is formed in the right side of the induction cavity in a communicating manner; a memory alloy sheet is fixedly arranged on the left wall of the induction cavity; the rightward extending part of the memory alloy sheet extends into the contact cavity; the contact cavity is provided with a relay control mechanism which controls the operation of the mechanism in the device through the softening of thememory alloy sheet when the external fire temperature rises; an alarm lamp is fixedly arranged on the top surface of the shell; and a control cavity is arranged in the shell. Whether a fire accident happens to the outside or not can be effectively monitored through the deformation characteristics of the memory alloy, then other mechanisms in the device are operated through the relay control system, the control effect is higher, and the transmission efficiency is higher.

The invention discloses a field programmable intelligent control system based on a single-chip microcomputer. The field programmable intelligent control system includes one or more groups of sub control systems, wherein the sub control systems are formed by a host, a slave and, an extension machine which are connected by a bus; the host is used for processing an on-site signal collected by the extension machine, and the extension machine is used to send a control signal to a field device; the slave is used for transmission of the on-site signal; and the extension machine is used for acquisition and conversion of the on-site signal and for transmitting the control signal to the field device. In the invention, the one or more groups of sub control systems are provided, and each sub control system includes the host, the slave, and the extension machine which are connected by the bus; according to different fields, different on-site signal module combination methods can be designed so as to replace the contactor and relay control system to realize the signal acquisition and control of the field device; the enterprise manufacturing cost can be greatly reduced; and the research and development and the production are ensured for the small and medium-sized enterprise.

The invention provides a relay control system based on zero-crossing delay control. The relay control system comprises an acquisition module, a main control module, a storage module and a control module, wherein the main control module obtains a relay switching-off delay time and a relay switching-on delay time by means of relay calibration, calculates a control delay time and stores the control delay time, combines with a zero-crossing point signal provided by means of the acquisition module, and realizes zero-crossing point control of the control module. The relay control system based on zero-crossing delay control mainly improves the using effect of a relay from the aspect of software, and adopts a delay control algorithm so that the relay is positioned at the zero point at the moment of turning on or off a lamp and voltages at both ends of the relay are zero, thus the impact to the relay is minimized, and the service life of the relay is prolonged. In particular, the main control module acquires the internal temperature of equipment in real time, compensates for the control delay time according to the acquired temperature, and performs calibration to obtain the switching-on andswitching-off delay times, so that the switching-on and switching-off of the relay can be at the zero point under the current temperature condition.

The invention relates to the technical field of refrigerated trucks, and in particular relates to an intelligent refrigerated truck vehicle-mounted data acquisition terminal system based on the Internet of Things technology. The vehicle-mounted data acquisition terminal comprises expandable 12 paths of temperature and humidity sensors, one path of image sensor which is used for acquiring picture information in a carriage in real time, two Hall sensors which are used for detecting opening and closing information of the carriage door in real time, a GPS satellite positioning system which is usedfor positioning the position of the vehicle in the driving process in real time, an MPU6050 sensor which collects the acceleration of vehicle driving and the vehicle body angle information in the carriage driving process in real time, and a two-way relay control system which controls the refrigerating machine system and can print out data information in the running process of the refrigerated truck and store the data information in a USB flash disk; the 4G module enables the acquisition terminal to be connected into the Internet of Things cloud platform through an Internet of Things protocol,and data display, big data analysis and intelligent decision making are achieved on the cloud platform. According to the system, transparent management of cold-chain logistics is realized, and intelligent regulation and control of the temperature of the refrigerated truck are realized.

The invention discloses a multifunctional welding machine controller based on a PLC. The multifunctional welding machine controller comprises a port triggering circuit and a welding process control circuit which are sequentially arranged, wherein the welding process control circuit comprises a welding process time sequence control circuit, a time delay circuit and a parameter adjusting circuit; the port triggering circuit is used for recognizing external information input, the welding process information selected by an operator is transmitted to the welding process control circuit, the weldingprocess control circuit controls the operation of a welding power supply, a wire feeder, a powder feeder, a water cooler and an air channel, so that the control of the welding process, the display ofa working state of the controller and the adjustment of the welding parameters are realized. Manual arc welding, argon arc welding, plasma welding, and hard surface surfacing function of a plasma wire material and a powder material can be realized; a relay control system of existing welding equipment is replaced, so that the reliability of a control system is enhanced, a control function is increased, and the power consumption of the equipment is reduced.

The invention discloses an electric control system for automatic flaw detection of steel pipes, which comprises a control unit and a sensor unit, wherein an input end of the control unit is connected with an ultrasonic flaw detector, and an output end of the control unit is connected with two topping electromagnetic valves, twelve loading roller motors, three forced-delivery roller motors, six pinch roller electromagnetic valves, twelve blanking roller motors, six overturning motors, one storing motor and two stirring electromagnetic valves. The invention also discloses an electric control method for the automatic flaw detection of the steel pipes, which comprises the steps of material lifting, loading, forced delivery, blanking and storing. The control system and the control method use a PLC as a control core which is matched with the ultrasonic flaw detector to finish a series of actions of material lifting, forced delivery, stirring and stacking for the automatic flaw detection of the steel pipes, so compared with a conventional relay control system, the whole control system is optimized and has more stable performance.