Monitoring system for elevator energy storage device

Abstract

The utility model discloses a monitoring system for an elevator energy storage device, which is characterized in that a three-phase alternating current is connected into an elevator frequency converter, and after the three-phase alternating current is rectified, filtered and inverted in the elevator frequency converter, the frequency-adjustable three-phase alternating current is input into an elevator motor; an elevator energy storage unit is connected to a direct current bus of an elevator frequency converter, a switch assembly is connected between the elevator energy storage unit and the elevator frequency converter, and the elevator energy storage unit is turned on and turned off through the switch assembly; the 4G monitoring unit comprises a Hall sensor, an intelligent Internet of Things meter and a 4G transmitting module which are connected in sequence; the Hall sensor is used for collecting the current of the low-voltage side of the elevator energy storage unit and converting the current into a standard transmission signal 4-20 mA. The intelligent Internet of Things meter is used for measuring voltage of the high-voltage side and the low-voltage side of the elevator energy storage unit and current data of the low-voltage side and receiving a standard signal from the Hall sensor. And the 4G transmitting module is used for transmitting voltage and current data measured by the intelligent Internet of Things meter to the upper computer.

Description

Technical Field

[0001] This utility model relates to the field of elevator energy storage monitoring technology, and in particular to a monitoring system for elevator energy storage devices. Background Technology

[0002] Elevator regenerative energy recovery, storage and reuse technology involves storing the regenerative electrical energy generated when the elevator traction machine is in braking mode in an energy storage device through a designed recovery circuit; when the traction machine is in traction mode, the electrical energy stored in the energy storage device is released into the DC bus, and together with the electrical energy rectified by the rectifier bridge, it is used to drive the elevator traction machine.

[0003] Currently, elevator energy storage units are widely used to store regenerated electrical energy in existing technologies. However, the lack of a monitoring system for elevator energy storage unit data makes it impossible to obtain timely information about these units. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a monitoring system for elevator energy storage devices, which uploads energy-saving data of elevator energy storage units in real time through a 4G monitoring unit, so as to keep track of elevator energy storage unit information in a timely manner.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model embodiment provides a monitoring system for an elevator energy storage device, including: an elevator frequency converter, an elevator motor, an elevator energy storage unit, a switch assembly, and a 4G monitoring unit;

[0007] Three-phase AC power is connected to the elevator frequency converter, which internally rectifies, filters, and inverts the three-phase AC power before inputting the frequency-adjustable three-phase AC power into the elevator motor.

[0008] The elevator energy storage unit is connected to the DC bus of the elevator frequency converter, and the switching assembly is connected between the elevator energy storage unit and the elevator frequency converter. The elevator energy storage unit is turned on and off through the switching assembly.

[0009] The 4G monitoring unit includes: a Hall sensor, a smart IoT meter, and a 4G transmission module connected in sequence;

[0010] The Hall sensor is used to collect the current magnitude on the low-voltage side of the elevator energy storage unit and convert it into a standard transmission signal of 4-20mA.

[0011] The smart IoT meter is used to measure the voltage on the high-voltage side and the low-voltage side of the elevator energy storage unit, as well as the current data on the low-voltage side, and to receive standard signals from the Hall sensor.

[0012] The 4G transmission module is used to transmit the voltage and current data measured by the smart IoT meter to the host computer.

[0013] In some embodiments, the switching assembly includes: a transformer, a diode, and a high-voltage relay;

[0014] One phase of alternating current is drawn through the transformer, then through one of the diodes, and finally supplied to the coil of the high-voltage relay.

[0015] In some embodiments, the elevator energy storage unit includes: a bidirectional DC-DC converter and a supercapacitor module;

[0016] The elevator inverter bus is connected to the switch assembly, and then to the high-voltage end of the bidirectional DC-DC converter. The bidirectional DC-DC converter is connected to the supercapacitor module through a low-voltage switch.

[0017] In some embodiments, the 4G transmission module is connected to the smart IoT meter via 485 communication.

[0018] In some embodiments, the 4G monitoring unit further includes a switching power supply, which is connected to the 4G transmitting module and is used to supply power to the 4G transmitting module.

[0019] This utility model provides a monitoring system for elevator energy storage devices. Through Hall sensors and smart IoT meters, it can collect in real time the charging and discharging current of the supercapacitor module in the elevator energy storage unit, as well as the voltage at the DC bus end and the supercapacitor module end. The system can also remotely read the above data in a host computer through a 4G transmitter module.

[0020] This utility model provides a monitoring system for elevator energy storage devices. It monitors the operation of the elevator energy storage unit in real time through a 4G monitoring unit, analyzes the recovery and reuse of energy, and provides maintenance warnings for the elevator energy storage unit and elevator energy-saving system.

[0021] This utility model provides a monitoring system for elevator energy storage devices. The 4G monitoring unit serves as the information management platform for the elevator energy storage unit. It is used in conjunction with Hall sensors, smart IoT meters, and 4G transmission modules to remotely monitor, analyze performance, and compile reports on important parameters such as implementation parameters, operating status, and energy-saving parameters of the elevator energy storage unit. This enables systematic information management and helps market and maintenance personnel to conduct comprehensive comparative analysis of elevator energy-saving effects. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments of this disclosure will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual process of the method, etc. involved in the embodiments of this disclosure.

[0023] Figure 1 This is a schematic diagram of the circuit structure of a monitoring system according to some embodiments of the present disclosure. Detailed Implementation

[0024] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0025] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0026] This utility model provides a monitoring system for elevator energy storage devices, such as... Figure 1 As shown, it includes: elevator frequency converter 1, elevator motor 2, elevator energy storage unit 3, switch assembly 4, and 4G monitoring unit 5.

[0027] In some embodiments, three-phase AC power is connected to the elevator inverter 1. The elevator inverter 1 rectifies, filters, and inverts the three-phase AC power, then inputs the frequency-adjustable three-phase AC power into the elevator motor 2. In this way, the elevator motor 2 can be driven to run and rotate.

[0028] In some embodiments, the elevator energy storage unit 3 is connected to the DC bus of the elevator inverter 1, and a switch assembly 4 is connected between the elevator energy storage unit 3 and the elevator inverter 1 to turn the elevator energy storage unit 3 on and off.

[0029] The elevator energy storage unit 3 is used to store the energy generated by elevator potential energy recovery and elevator braking, and to feed it back when the elevator needs energy to run.

[0030] In some embodiments, the 4G monitoring unit 5 includes: a Hall sensor, a smart IoT meter, and a 4G transmission module connected in sequence.

[0031] In some embodiments, the Hall sensor is used to collect the current magnitude on the low-voltage side of the elevator energy storage unit 3 and convert it into a standard transmission signal of 4-20mA.

[0032] In some embodiments, the smart meter is used to measure the voltage on the high-voltage side and the low-voltage side of the elevator energy storage unit 3, as well as the current data on the low-voltage side, and to receive standard signals from the Hall sensor.

[0033] In some embodiments, the 4G transmission module is used to transmit voltage and current data measured by the smart IoT meter to the host computer.

[0034] For example, the 4G transmitter module is connected to the smart IoT meter via RS-485 communication.

[0035] In some embodiments, the 4G monitoring unit 5 further includes a switching power supply, which is connected to the 4G transmitting module and is used to supply power to the 4G transmitting module.

[0036] For example, the switching power supply is an AC / DC 24V / 1.5A switching power supply.

[0037] This utility model provides a monitoring system for elevator energy storage devices. Through Hall sensors and smart IoT meters, it can collect in real time the charging and discharging current of the supercapacitor module in the elevator energy storage unit, as well as the voltage at the DC bus end and the supercapacitor module end. The system can also remotely read the above data in a host computer through a 4G transmitter module.

[0038] This utility model provides a monitoring system for elevator energy storage devices. It monitors the operation of the elevator energy storage unit in real time through a 4G monitoring unit, analyzes the recovery and reuse of energy, and provides maintenance warnings for the elevator energy storage unit and elevator energy-saving system.

[0039] This utility model provides a monitoring system for elevator energy storage devices. The 4G monitoring unit serves as the information management platform for the elevator energy storage unit. It is used in conjunction with Hall sensors, smart IoT meters, and 4G transmission modules to remotely monitor, analyze performance, and compile reports on important parameters such as implementation parameters, operating status, and energy-saving parameters of the elevator energy storage unit. This enables systematic information management and helps market and maintenance personnel to conduct comprehensive comparative analysis of elevator energy-saving effects.

[0040] In some embodiments, the switching assembly 4 includes a transformer, a diode, and a high-voltage relay K2.

[0041] In some embodiments, one phase of alternating current is taken, passed through a transformer, and then through a diode to power the coil of the high-voltage relay K2.

[0042] For example, the transformer is a single-phase transformer, which functions to stabilize the voltage, and the diode functions to limit the direction of current flow. In this way, a stable current can be transmitted to the high-voltage relay K2 to control the switching of the elevator energy storage unit 3.

[0043] In some embodiments, the elevator energy storage unit 3 includes a bidirectional DC-DC converter and a supercapacitor module.

[0044] In some embodiments, the elevator inverter 1 bus is connected to the switch assembly 4, and then to the high-voltage end of the bidirectional DC-DC converter, which is connected to the supercapacitor module via a low-voltage switch.

[0045] When the DC bus voltage of elevator inverter 1 is greater than 650V, the electrical energy on the DC bus of elevator inverter 1 is supplied to the supercapacitor module through a bidirectional DC-DC converter, providing a constant charging current. The supercapacitor module can quickly absorb electrical energy. When the DC bus voltage of elevator inverter 1 is lower than 550V, the supercapacitor module boosts the voltage through a bidirectional DC-DC converter, and then replenishes the voltage and current to the DC bus of elevator inverter 1 in a timely manner through a constant power supply. The supercapacitor module can quickly provide energy to elevator inverter 1 to drive elevator motor 2, thereby reducing the energy demand of elevator inverter 1 from the power grid.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A monitoring system for an elevator energy storage device, characterized by: The application relates to an elevator frequency converter, an elevator motor, an elevator energy storage unit, a switch assembly and a 4G monitoring unit. Three-phase alternating current is connected to the elevator frequency converter, and the elevator frequency converter rectifies, filters and inverts the three-phase alternating current to input frequency-adjustable three-phase alternating current into the elevator motor. The elevator energy storage unit is connected to the DC bus of the elevator frequency converter, and the switch assembly is connected between the elevator energy storage unit and the elevator frequency converter, so that the elevator energy storage unit can be turned on and off through the switch assembly. The 4G monitoring unit comprises a Hall sensor, an intelligent internet-of-things table and a 4G transmitting module which are connected in sequence. The Hall sensor is used for collecting the current size of the low-voltage side of the elevator energy storage unit and converting the current size into a standard transmission signal 4-20mA. The intelligent internet-of-things table is used for measuring the voltage of the high-voltage side and the low-voltage side of the elevator energy storage unit and the current data of the low-voltage side and receiving the standard signal from the Hall sensor. The 4G transmitting module is used for transmitting the voltage and current data measured by the intelligent internet-of-things table to an upper computer. The switch assembly comprises a transformer, a diode and a high-voltage relay.

2. The monitoring system for an elevator energy storage device according to claim 1, characterized in that, One-phase alternating current is taken, passes through the transformer, passes through a diode and then is used to supply power to the coil of the high-voltage relay. The elevator energy storage unit comprises a bidirectional DC-DC converter and a super capacitor module.

3. The monitoring system for an elevator energy storage device according to claim 1, characterized by, The switch assembly is connected to the DC bus of the elevator frequency converter and then connected to the high-voltage end of the bidirectional DC-DC converter, and the bidirectional DC-DC converter is connected to the super capacitor module through a low-voltage switch. The 4G transmitting module is connected to the intelligent internet-of-things table through 485 communication.

4. The monitoring system for an elevator energy storage device according to claim 1, characterized by, The 4G monitoring unit further comprises a switching power supply which is connected to the 4G transmitting module and is used for supplying power to the 4G transmitting module.

5. The monitoring system for an elevator energy storage device of claim 1, wherein, ​

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