73results about "Energy efficiency in escalators" patented technology

A control system for a passenger conveyor includes a ready-to-operate mode, a standby speed and a nominal speed. A method to operate the passenger conveyor includes the steps of: transitioning the conveyor from ready-to-operate mode to nominal speed using a frequency converter; switching from frequency converter to line power at nominal speed; switching back to frequency converter if no passengers are present and transitioning from nominal to standby speed; and transitioning from standby speed to ready-to-operate mode if a predetermined amount of time passes without a passenger entering the conveyor.

The present invention provides a ladder side and its processing method, belonging to component of the automatic ladder. The ladder side includes a ladder top side structure and a ladder lower side structure, characterized in taht:the ladder top side is decompounded to design to a plate component composed of at least two blocks, the ladder lower side is decompounded to design to a plate component composed of at least three blocks, each plate component of the top side and the lower side are formed by at least three bending components and at least two connecting components, fixed with the plate component and each rails respectively. The invention fills the blank of the present technology, resolves the fault caused by the whole structure of the ladder top and lower sides, has a easy process, lower cost, lower energy consumption, convenient package and transportation, and laboursaving and easy mounting, and meets the requirement of mass production of the modernization ladder manufacturing company.

A driving chain of a passenger conveyor and / or the relaxation amount of armrest driving chain are diagnosed at a condition that an accurate motor control technique and a special stair moving sensor are not required. The passenger conveyor (1) is moved to a direction through a motor (10) and then is braked for stopping. A braking device is activated at a state that the power supply to the motor (10) is cut off. The rotation amount of a driving shaft (7) is detected through a rotation amount detector (12). The relaxation amount of a driving chain (9) is calculated based on the rotation amount. Furthermore the motor is driven to rotate along a reverse direction, the total delay time (T4) to a time when the moving of armrest (20) is detected through an armrest moving amount detector (24). The relaxation amount (L2) of the armrest driving chain (23) is calculated through subtracting a calculated value (L1) corresponding with the relaxation amount of the driving chain (9) from the total delay time.

The invention discloses an automatic escalator or a sidewalk that is driven by a double main machine, which includes a drive device, a first main machine and a second main machine that are connected in parallel, a control device and a load detection device, wherein, the load detection device is utilized to detect a load state signal of the escalator or the sidewalk and output the signal to the control device; the control device is utilized to judge the load state and control the drive unit to drive the first main machine to work independently or drive the first main machine and the second main machine to work at the same time. The automatic escalator or the sidewalk has the advantages that the escalator or the sidewalk is controlled by a double main machine independently, and the power of the main machines can be combined conveniently; the main machine can have different running states that can be adjusted according to the load state so that the two main machines can work at the power nearest to their rated load, so the working efficiency and the power factor of the main machine can be improved, the service life can be prolonged; meanwhile, the invention can save energy and the operation is safe and reliable.

The invention discloses a control method of an escalator which includes the steps that the visible light and / or infrared images of the area scenes maintained for the passengers to stand on are acquired; the images are analyzed; the escalator is judged if passengers stand on the escalator according to the analytical results; according to the judgment results whether passengers stand on the escalator and the current state of the escalator, the state of the escalator is controlled; the invention also discloses a control system of the escalator; the technical proposal of the control method and the control system of the escalator can realize the control of the operating state of the escalator through acquiring the images of the standing areas on the escalator and realize the purpose of saving energy.

The invention discloses a control device for an escalator and an automatic sidewalk, comprising a rectifier device assembly, an inverter device assembly, a motor, a microprocessor operating system, a current transformer and a pedestrian detection device at escalator top and bottom entry. The current transformer and the pedestrian detection device are used for estimating an escalator load factor, automatically changing operation speed of the escalator and the automatic sidewalk according to difference of the escalator load factors, and increasing the escalator speed to exceed a rated speed in heavy load. The no-load energy saving function of the escalator and the automatic sidewalk can be achieved, the pedestrian conveying capability when the escalator is under a heavy load can be increased, and the energy can be saved furthest in a light load.

Process and device for controlling the drive means of a conveyor system 10, specifically in the form of an escalator or passenger conveyor, which can be switched from load to no-load operation, comprising a drive motor 26 and a variable frequency converter 42, which at is least controllable with respect to the frequency of its output voltage, wherein, under load, the drive motor 26 is supplied with a line voltage with an essentially constant line frequency and, at no-load, is supplied the output voltage of the variable frequency converter's 42, wherein, prior to a changeover from no-load to load operation, the output frequency of the variable frequency converter 42 is essentially brought with phase accuracy to the line frequency by means of a PLL device 30, and wherein this changeover is brought about as soon as this phase conformance has been realized.

The invention discloses a pedestrian loading rate detecting device for an escalator and an autowalk. In the pedestrian loading rate detecting device, an electric power value of an escalator in current running is calculated by a current detecting module, a voltage estimating or detecting module and a current power calculation module; an electric power value of the escalator in full-load running is calculated by a running direction judging module and a full-load power calculation module; an electric power value of the escalator in no-load running is calculated by a no-load state judging module and a no-load power adjusting module; and an actual loading rate is calculated by a loading rate calculation module according to the full-load running electric power value, the no-load running electric power value and the current running electric power value. The pedestrian loading rate detecting device enables accurate loading rate calculation, can be adjusted automatically according to conditions of an escalator lifting height, an actual escalator mechanical resistance and the like, and is convenient to use.

The invention relates to an automatic arm rest lift energy saving method, with the energy saving device inspection automatic arm rest control circuit sending three phases power supply phase change to decide the positive and negative running direction of the lift through converter controlling the running of the lift. Energy saving device is used to inspect the circuit for lift loading, sending out a low speed running signal through converter while the lift is free from load. While unchanging the original control, it has small linking lines, free from the up, down and running signals of the sampling original control circuit.

The invention discloses a control device of an induction motor, comprising a tri-phase bridge rectifier, a power module, the induction motor, a current transformer, a coder, a pulse-width modulation (PWM) driver and a driving operating system, wherein the driving operation system adopts a vector control mode and comprises a filter circuit which is connected between a speed loop proportional plus integral (PI) controller and an exciting current instruction operation unit of the driving operation system and is used for filtering the moment current instruction value and inputting the filtered moment current instruction value in the exciting current instruction operation unit; and the exciting current instruction operation unit corrects the exciting current instruction value Ids of the induction motor based on the filtered moment current instruction value to lead the induction motor to have the minimum total current under the same load condition. The invention also discloses an application of the control device of the induction motor. In the invention, on the premise of not weakening the heavy load driving capacity of an escalator and a moving walk, the effect of stable operation of the motor with minimum current under a medium / light load condition is realized, thus achieving energy conservation.

The invention relates to an escalator inlet human body inductor which ensures that a mobile signal of a human body is accurately detected at an escalator inlet so as to realize the aim of energy saving by suspending the running of an escalator when the escalator is not used. A human body signal collecting circuit comprises a power supply circuit, an ultrasonic transceiver and a matched drive circuit thereof as well as a feedback signal processing circuit, wherein the power supply circuit is used for providing a working power supply for other circuits after being subjected to filtration and voltage reduction; a controller is used for transmitting a drive signal to the input end of the drive circuit and driving the ultrasonic transceiver to send an ultrasonic signal; after the ultrasonic signal is reflected by a moving human body, the ultrasonic transceiver receives reflecting echo, and the reflecting echo is transmitted to a central processing unit after processed by the feedback signal processing circuit; and an escalator action signal is output after calculating by the central processing unit. The invention has the advantages of suspending the running of the escalator when not used, saving energy and preventing the condition of not collecting the moving information of a human body when people pass through.

The invention discloses an escalator energy-saving control system based on an embedded type technology, and a main loop is that each phase of a three-phase power supply is connected with two groups of star-connected pulse duration modulation controllers respectively and successively after passing through an inductance and a resistor, the center point of each group of pulse duration modulation controllers is a positive electrode output end and a negative electrode output end, and the positive electrode output end and a negative electrode output end bridges the capacitance; a control circuit is that each phase voltage and current signal are sampled and extracted from each phase of the three-phase power supply and are connected with a microprocessor through a reshaping circuit and an isolating circuit; voltage is output from the positive electrode output end and the negative electrode output end and is connected with the microprocessor through the isolating circuit; The three-phase pulse duration modulation output of the microprocessor is respectively connected with each pulse duration modulation controller through a driver and an isolator; and the microprocessor is connected with a fault protective circuit, a keyboard display circuit and a communication interface circuit. The most obvious characteristic of the escalator energy-saving control system is energy conservation. The energy conservation of the escalator on average is more than 40%. The average energy consumption is 50% of that in single speed operation. Simultaneously, mechanical abrasion is reduced, and service life of installation kit and a complete machine is prolonged.

A permanent magnetic synchronous escalator tractor, a prime move of which adopts a permanent magnetic synchronous motor of the permanent synchronous magnetic technique, transforms the output of the permanent magnetic synchronous motor into the output of the escalator tractor through a retarding mechanism. The permanent magnetic synchronous motor and a gear retarding and transmitting structure are fixed on a tractor base; the gear retarding and transmitting structure is a primary gear transmitting structure, wherein a high-speed gear shaft is a motor shaft of the permanent magnetic synchronous motor; a low-speed gear shaft is an output shaft of the permanent magnetic synchronous escalator tractor; the high-speed gear shaft and the low-speed gear shaft are in pair connection through gears; the work efficiency of the permanent magnetic synchronous escalator tractor of the structure can normally reach from 0.87 to 0.9. Compared with prior escalator tractors, the work efficiency is raised by from 40 to 50 percent; the tractor can be used in driving an automatic escalator and a moving sidewalk. Because the permanent synchronous magnetic technique and the high-efficiency primary helical gear transmission are adopted, a quite high transmitting efficiency can be achieved, the effect of energy saving and environment protection is achieved as well.

The invention relates to an automatic escalator speed regulating method. The automatic escalator speed regulating method includes the following steps that when an escalator operates without being loaded, the corresponding relation between an operation frequency and torque of a motor is learned on its own; the corresponding relation between the load rate of the escalator and the operation speed of the escalator is set; when the escalator goes upwards, the torque of the current motor of the escalator is detected and the current load rate is calculated; according to the current load rate, the corresponding operation speed is set; when the escalator goes downwards, the size of the voltage and a change trend of a bus of the escalator are detected; if the voltage of the bus is larger than G1 but smaller than G2 and upward going does not exist, the mode of the escalator is going to be switched to a working frequency mode; if the voltage of the bus is lager than G1 and upward going exists or if the voltage of the bus is larger than G2, the mode of the escalator is switched to the working frequency and operate; if the voltage of the bus is smaller than G3, the torque of the motor is detected and the current load rate is calculated; according to the current load rate, the corresponding operation speed is set. According to the method, no hardware is needed for controlling variation of the operation speed of the escalator and frequent switching of the working frequency will not happen. Thus, cost can be saved and damage to elements of the escalator is reduced.

The invention discloses a drainage device of an escalator or a moving pavement. The escalator or the moving pavement is mounted outdoors, oily water is accumulated on a sealing bottom plate of the lower end of the escalator or the moving pavement after raining, the oily water is stored in a groove on the sealing bottom plate, oil is lighter than water and floats on the water all along, a sealing part is opened when drainage is required, accordingly, a drain outlet is connected with a drain pipe, the water in the groove flows through a communicating opening at the bottom of a cover and a communicating space and is drained via the drain outlet, the oil is finally retained at the bottom of the groove after the water is drained completely, finally, the drain outlet is closed by the aid of the sealing part, the oil is guaranteed against being leaked, the water is drained smoothly while oil leakage is avoided, and purposes of energy conservation and environmental protection are achieved. In addition, the groove is mounted on the sealing bottom plate, the bottom of the groove is higher than the lowest edge of the escalator or the moving pavement, the groove does not need to be mounted in an extra pit, and the drainage device is not limited by civil engineering.

Conveyor system for the transportation of passengers (21) / goods (22) formed by a bearing structure (1a), a loading / unloading area (1b) and a traction equipment (4a, 19, 20), which also comprises mobile platforms (3, 6, 7, 8, 16, 26) dragged by the traction equipment (4a, 19, 20), for the reception and transport of passengers (21) / goods (22) from a loading area to an unloading area. The mobile platforms (3, 6, 7, 8, 16, 26) have side walls (25) to define a compartment and prevent passengers (21) / goods (22) from interfering with the guiding device (4b) thereof in a carryway, from a loading area (1b) to an unloading area (1b), and in a return way, from an unloading area (1b) to a loading area (1b).

The present invention is lighting LED device for escalator or moving side walk rail protecting wall plate. The present invention features that LED device lights the escalator or moving side walk via the ground glass plate. The lighting LED device consists of LED array, glass wall protection, guide rail and power source, and the LED array is embedded inside the cavity between the rail protecting wall and the guide rail. The lighting LED device is novel, beautiful, reliable, less in power consumption and environment friendly.

The invention relates to an intelligent drive control system of an escalator, which is characterized by comprising a group control main computer, a main control computer, a sensor and a plurality of actuators. The main control computer is respectively connected with the actuators and the sensor, the actuators comprise a drive host, a brake, an electromagnetic clutch and are respectively connected with the main control computer, and the main control computer is also connected with the group control main computer. The intelligent drive control system also comprises an LED (light-emitting diode) display, and the LED display is connected with the main control computer. By adopting the system, the number of the used drive hosts can be adjusted according to the load on the escalator, and the energy-saving purpose can be fully realized.

The invention relates to an automatic arm rest lift or foot path control method and relative system, wherein said system comprises driver, arm rest lift controller, speed controller connected to the driver and arm rest lift controller to control the speed of driver, and load detector. The load detector inputs the detected the load signal of lift to the arm rest lift controller. And the control method comprises that: using detector to real-time detect the lift load; inputting detected load signal to the lift controller; the arm rest lift controller via speed controller controls the driver, to select relative operation speed; since the invention uses load feedback, via the flux to control the speed and save energy.

The present invention discloses one novel type of powerless escalator energy storing down lift, which is powered for normal running by the body weight and the gravitation eccentric flywheels on two ends of the upper main shaft of the lift to generate kinetic energy. The down lift has always uniform velocity downward running, saving in power and descent convenience. It may be combined with the upward lift to form a gold cooperation, and its stored electric energy may be provided for the upward lift or for other use.

The aim of the invention is to make person conveying systems more simple and less expensive. Said aim is achieved by equipping a person conveying system with a synchronous linear motor comprising a rack-shaped, permanent magnet-less secondary part (S) for driving purposes while the primary part of the synchronous linear motor is fixed to the conveying device (K) in or on which persons can be conveyed. If the person conveying system is embodied as a magnetic levitation railway, the synchronous linear motor makes it possible to conserve a significant amount of energy as opposed to an asynchronous linear motor as the permanent magnets provide a certain basic magnetic flux that can be used for supporting the railway car and driving the same in the direction of travel.

The invention provides a control apparatus of a passenger conveyor and a control method which can effectively reduce the impact to an induction-motor when source transfer in a simple and low-cost structure, and can prevent the occur of noise and shake. A star-delta start the same as the starting running is made when the source is transferred for the induction-motor, the provisional connection of the induction-motor is star connection and then transfers to a delta connection. The induction-motor is supplied power provisionally by the starting resistance or the starting choking coil when the source is transferred for the induction-motor, and then the power is supplied by winding off the starting resistance and the starting choking coil.

The invention provides an escalator stair power-off fault detection device which comprises a supporting rod component and an elastic compression component. The supporting rod component comprises a plurality of supporting rods and two universal hooves; the elastic compression component comprises a sliding block, an encoder, an installation plate, a torsional spring, a torsional spring installation plate and the like. According to the escalator stair power-off fault detection device, the supporting rods can be firmly supported on a left lateral plate and a right lateral plate of an escalator, and the encoder is completely in contact with stairs; the firmness of a speed measuring clamp during clamping is accordingly and greatly improved. The escalator stair power-off fault detection device is used in cooperation with the speed measuring clamp arranged on a handrail, the synchronism of the stairs and a handrail belt can be rapidly and conveniently detected, and the efficiency is greatly improved. The escalator stair power-off fault detection device has the advantages of being convenient to detect, high in speed, high in accuracy, high in universality and the like.

The invention discloses an energy-saving efficient escalator control system, which comprises a PLC (programmable logic controller), a passenger detector, a frequency changer and a motor. The passenger detector transmits the loading information to the PLC that controls the rotary speed of the motor through the frequency changer. The frequency changer is connected with a frequency detector, a delayed selector switch is arranged on a circuit between the frequency changer and the motor, the frequency detector detects the output power frequency information of the frequency changer and sends the same to the PLC, and the PLC sends a circuit switching command to switch the circuit for the delayed selector switch so that the motor is connected with the power frequency circuit. With adoption of the structural form, when the escalator carries passengers, the escalator advances at full speed and the frequency changer stops working, thereby not only improving the work efficiency, but also prolonging the service life of the frequency changer. In addition, the system further has the advantages of low cost, no noise, energy conservation and environmental friendliness.

An exemplary device for controlling power associated with a passenger conveyor motor includes a regenerative drive that is configured to facilitate providing electricity generated by the motor to a power source when the passenger conveyor is moving. The controller determines when an operating condition of the regenerative drive is outside of a desired range and responsively prevents the regenerative drive from facilitating providing the electricity to the power source.

A full-automatic frequency conversion energy-saving escalator relates to the technical field of escalators and comprises infrared sensors arranged at the entrance position and the exit position of an escalator. The infrared sensors are used for detecting whether people are nearby. When passengers pass through or approach the infrared sensors, micro heat of human bodies is received by the sensors, and the infrared sensors send signals to report to a system. The infrared sensors are connected with a variable frequency governor through a control circuit. The control circuit receives the states of the infrared sensors and indicates the variable frequency governor to work. The variable frequency governor is used for adjusting the rotation speed of the escalator, starting the escalator and controlling the escalator to operate stably. When nobody passes, the system is converted into climbing operation through delaying automatically so as to achieve the purpose of saving energy. When the passengers exist, the escalator is subjected to frequency control to reach rated speed. When all the passengers leave the escalator, the escalator enters a low speed operation state to wait for the passengers automatically. Energy is saved, and mechanical abrasion is reduced.

The invention discloses a chain-type classification drive device at middle of escalator, which includes a load step chain (3); a step main orbit (2) for a step chain roller (32) of the load step chain (3) rolling on it; at least one chain wheel drive device equipped at middle of the escalator, which is connected with power source and disposed under the load step chain (3); and chain teeth which is arranged on a drive chain (4) of the chain wheel drive device and capable of engaging with the load step chain (3). Advantages of the classification drive device are: head drive power does not increased, structure is simple, material consume is less, self-weight is light, demand of process precision is not high, and cost is low.