CN114590661B - Novel energy-saving elevator system - Google Patents
Novel energy-saving elevator system Download PDFInfo
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- CN114590661B CN114590661B CN202111673128.0A CN202111673128A CN114590661B CN 114590661 B CN114590661 B CN 114590661B CN 202111673128 A CN202111673128 A CN 202111673128A CN 114590661 B CN114590661 B CN 114590661B
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- 238000010248 power generation Methods 0.000 claims abstract description 75
- 238000001514 detection method Methods 0.000 claims description 53
- 238000004804 winding Methods 0.000 claims description 19
- 230000001174 ascending effect Effects 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- 238000005381 potential energy Methods 0.000 abstract description 12
- 230000005611 electricity Effects 0.000 abstract description 10
- 230000006698 induction Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 5
- 102100039435 C-X-C motif chemokine 17 Human genes 0.000 description 3
- 101000889048 Homo sapiens C-X-C motif chemokine 17 Proteins 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1846—Rotary generators structurally associated with wheels or associated parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Elevator Control (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention discloses a novel energy-saving elevator system, which comprises: the control circuit module comprises a transmitting end control circuit and a receiving end control circuit which are connected in a wireless mode; the transmitting end control circuit is used for detecting the running state of the elevator and transmitting wireless signals; the receiving end control circuit is used for receiving the wireless signals and controlling the work of the power generation collection module; the power generation collection module is used for generating electricity and generating electric energy, and comprises a rotation power generation unit and a magnetic field generation unit arranged around the rotation power generation unit. According to the invention, the rotating wheel assembly of the elevator is connected with the power generation collecting device through the connecting rod, so that gravitational potential energy of an elevator system is converted into electric energy to be collected, and the energy utilization efficiency can be improved while braking is carried out without a braking resistor.
Description
Technical Field
The invention relates to the field of elevator energy conservation, in particular to a novel energy-saving elevator system.
Background
With the advent of high-rise buildings, elevators have emerged as a vertical transport means, which is an indispensable lifting device for modern urban life. The elevator generally comprises a car, a counterweight system, a steel wire rope, a traction sheave and the like, wherein the car and the counterweight system are respectively positioned at two sides of the traction sheave and are connected through two ends of the steel wire rope, and the steel wire rope is wound on the traction sheave. The heights of the lift car and the counterweight system are continuously changed through the traction of the traction sheave, so that the gravitational potential energy of the lift car and the counterweight system is changed, and the normal operation of the lift is realized. The elevators currently used are basically not provided with a power generation device, but are supplied to a traction machine by an external power source. Because the weight of the elevator car is different between no load and full load, but the weight of the counterweight system is constant, the traction machine of the elevator in the light-load ascending stage and the heavy-load descending stage does not need to provide additional power, and the elevator can work normally only by additionally braking the traction machine, for example, the braking resistance is increased, so that the energy consumption of the elevator is increased.
The intelligent heat dissipation control system for the elevator brake resistor box disclosed in the Chinese patent literature has the publication number of CN209882407U and the publication date of 2019-12-31 and comprises a power supply module, a central processing unit, a timer, a temperature detection device, an AD conversion circuit and a dual temperature control module; the dual temperature control module comprises an energy-saving relay, a DA conversion circuit and an amplifying circuit, a control loop I, a control loop II, a brake resistor box heat dissipation device and a temperature regulation device in a machine room, wherein the energy-saving relay and the DA conversion circuit and the amplifying circuit are respectively connected with a central processing unit, the energy-saving relay is connected with the temperature regulation device in the machine room through the control loop II, and the DA conversion circuit and the amplifying circuit are connected with the brake resistor box heat dissipation device through the control loop I; the invention adopts a double cooling mode of combining the brake resistor box heat dissipation device and the temperature regulating device in the machine room, improves the heat dissipation efficiency of the brake resistor, and prolongs the service life of the brake resistor. However, the technology does not effectively recycle a large amount of heat generated by the brake resistor, so that the heat energy converted by gravitational potential energy is wasted in a large amount, and the technology does not meet the environmental protection requirement.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the elevator is braked by a brake resistor, generated heat energy cannot be reused, and a large amount of energy is wasted, and provides a novel energy-saving elevator system.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a novel energy-efficient elevator system comprising:
the control circuit module comprises a transmitting end control circuit and a receiving end control circuit which are connected in a wireless mode; the transmitting end control circuit is used for detecting the running state of the elevator and transmitting wireless signals; the receiving end control circuit is used for receiving the wireless signals and controlling the work of the power generation collection module;
the power generation collection module is used for generating electricity and generating electric energy, and comprises a rotation power generation unit and a magnetic field generation unit arranged around the rotation power generation unit.
The invention forms a novel energy-saving elevator system by combining the power generation module and the control circuit, judges whether the motor of the elevator is in a motor state or in a generator state in the operation process of the elevator through the detection of the operation state of the elevator by the transmitting end control circuit, then sends a corresponding control signal to the receiving end control circuit, and the receiving end control circuit controls the work of the power generation collection module, so that the power generation collection module is determined to start power generation or end power generation.
Preferably, the rotary power generation unit comprises a rotary winding and a plurality of connecting rods fixedly connected with the rotary winding, the connecting rods are connected with a wheel assembly in the elevator, a coil is arranged in the rotary winding, and the output end of the rotary power generation unit is connected with the electric energy collecting device.
The rotating power generation unit is connected with the wheel assembly in the elevator through the connecting rod, when the elevator ascends or descends, the wheel assembly can be driven to rotate, the rotating wheel assembly enables the rotating power generation unit to rotate through the connecting rod, and the magnetic field generation unit is arranged around the transmission power generation unit in a surrounding mode; when the elevator runs and the motor consumes electric energy to drag, the magnetic field generating unit does not generate a magnetic field, and the rotating power generating unit does not generate power even if rotating; when the elevator runs and does not need the motor to consume electric energy, the magnetic field generating unit generates a magnetic field, the power generating unit is rotated to cut the magnetic induction line to generate power, and the electric energy is collected through the electric energy collecting device.
Preferably, the magnetic field generating unit comprises a plurality of magnetic field generating devices, the magnetic field generating devices are arranged in a matched mode in pairs, and the rotating power generating unit is located in the range of the magnetic field generated by the magnetic field generating devices.
The magnetic field generating units are arranged as magnetic field generating devices which are arranged in opposite directions in a pair-matching way, the magnetic field generating devices can be electromagnets, a magnetic field is generated between the two electromagnets after a pair of electromagnets are electrified, and the rotary power generating unit can generate electricity magnetically in the magnetic field range; the magnetic field generated by the electromagnet can be controlled to be generated, disappeared and strong or weak by the on-off of the current and the magnitude of the current, so that the control is convenient.
Preferably, the transmitting end control circuit comprises a bus voltage detection system, wherein the bus voltage detection system is used for receiving an elevator ascending signal or an elevator descending signal sent by an elevator main board; the bus voltage detection system is used for detecting a bus voltage difference value generated by a weight difference between a counterweight side and a car side of the elevator.
In the invention, due to the difference of weight difference between the counterweight side and the car side of the elevator, the motor of the elevator is in a motor state or a generator state when the elevator ascends or descends, the motor consumes electric energy of a power grid when in the motor state, and the motor generates electric energy when in the generator state, and the difference of bus voltages is different in the two states, so that the wireless signal sent by a transmitting end control circuit can be selected by detecting the bus voltage difference and combining the ascending or descending signal of the elevator.
Preferably, the receiving end control circuit comprises a singlechip U2 and a wireless control circuit which are in communication connection, and the wireless control circuit is in wireless connection with the transmitting end control circuit; the I/O end of the singlechip U2 is connected with a second voltage through a magnetic field generation branch, and the magnetic field generation branch comprises a voltage detection sensor and magnetic field generation devices arranged at two ends of the voltage detection sensor.
According to the invention, the singlechip U2 controls the communication or interruption of the I/O end according to the received signal, and when the I/O end is communicated, the voltage detection sensor connected with the I/O end detects that voltage exists, so that the voltage detection sensor is conducted, and the magnetic field generating devices connected with the two ends of the sensor generate a magnetic field; when the I/O is interrupted, the voltage detection sensor connected with the I/O terminal does not detect the voltage, the voltage detection sensor is disconnected, and the magnetic field generating devices connected with the two ends of the sensor do not generate magnetic fields. And meanwhile, the second voltage is an adjustable voltage, and the magnitude of the current passing through the magnetic field generating device is controlled by adjusting the magnitude of the second voltage so as to control the strength of the generated magnetic field.
Preferably, a car speed threshold is set in the transmitting end control circuit, and when the speed of the car rising or falling exceeds the car speed threshold, the transmitting end control circuit sends an overspeed signal to the receiving end control circuit, and the receiving end control circuit controls the magnetic field generating device to increase the magnetic field intensity, so that the car speed is reduced until the speed is lower than the car speed threshold.
The invention is provided with the car speed threshold value, so that the car has maximum speed limitation, when the car descends or ascends to exceed the car speed threshold value, the car can have the problems of improper stop position or difficult stop and the like, the risk of accidents can be increased, when the rotating power generation unit cuts the magnetic induction line to generate power, the rotating power generation unit receives the acting force of the connecting rod to rotate, and simultaneously the rotating power generation unit can receive ampere force after generating electricity to generate current, the direction of the ampere force is just opposite to the acting force of the connecting rod to the rotating power generation unit, therefore, when the magnetic field strength is increased to enable the ampere force moment to be larger than the acting force moment of the connecting rod to the rotating power generation unit, the rotating speed of the rotating power generation unit cutting the magnetic induction line is reduced, and the corresponding rotating speed of the wheel assembly connected with the rotating power generation unit is reduced, so that the speed of the car can be reduced.
Preferably, the bus voltage detection system detects a bus voltage difference value and receives a rising or falling signal from an elevator main board; when judging that the elevator needs to consume additional electric energy in operation, sending an interrupt signal to a receiving end control circuit, and generating no magnetic field; when the elevator operation is judged to not consume additional electric energy, a communication signal is sent to a receiving end control circuit to generate a magnetic field.
The invention has the following beneficial effects: the rotating wheel assembly of the elevator is connected with the power generation and collection device through the connecting rod, gravitational potential energy of the elevator system is converted into electric energy to be collected, and the energy utilization efficiency can be improved while braking by a braking resistor is not needed; the upper limit value can be set for the running speed of the elevator car, so that the running safety of the elevator is improved; the system can be externally connected to any rotating wheel assembly of the elevator at any time, and the system can be additionally arranged in the elevator which is put into use at any time, so that the system is convenient to detach and install.
Drawings
Fig. 1 is a schematic diagram of the energy efficient elevator system of the present invention;
fig. 2 is a schematic diagram of the operation of the elevator of the present invention;
FIG. 3 is a circuit diagram of a transmitting end control circuit of the present invention;
FIG. 4 is a circuit diagram of a receiver control circuit of the present invention;
fig. 5 is a schematic diagram of connection of an energy-saving elevator system in the second embodiment of the present invention;
in the figure: 1. a wheel assembly; 2. a connecting rod; 3. rotating the winding; 4. a coil; 5. a first electromagnet; 6. a second electromagnet; 7. an electric energy collection device; 8. a second control circuit module; 9. a first control circuit module.
Detailed Description
The invention is further described with reference to the drawings and detailed description.
A novel energy-efficient elevator system comprising: the control circuit module comprises a transmitting end control circuit and a receiving end control circuit which are connected in a wireless mode; the transmitting end control circuit is used for detecting the running state of the elevator and transmitting wireless signals; the receiving end control circuit is used for receiving the wireless signal and controlling the work of the power generation collection module; the power generation collection module is used for generating power and generating electric energy and comprises a rotation power generation unit and a magnetic field generation unit arranged around the rotation power generation unit.
As shown in fig. 1, the rotary power generation unit comprises a rotary winding 3 and a plurality of connecting rods 2, all of which are fixedly connected to the rotary winding; the rotating power generation unit is connected with a wheel assembly 1 in the elevator through a connecting rod, a coil 4 is further arranged in the rotating winding, and electric energy generated by the rotating power generation unit is collected and stored through an electric energy collecting device 7; the magnetic field generating unit is arranged around the rotary generating unit and comprises a plurality of magnetic field generating devices. The coil is wound on the rotary winding through a winding hole formed in the rotary winding, and the direction of the magnetic field generated by the coil and the magnetic field generating device is vertical.
As shown in fig. 2, the components that can rotate during operation of the elevator are the wheel assemblies of the elevator, including the ceiling sheave, traction sheave, guide sheave and counterweight sheave.
The magnetic field generating devices arranged in a matched manner are a first electromagnet 5 and a second electromagnet 6 in fig. 1, and the rotation generating unit is surrounded by the magnetic fields generated by the two electromagnets. The first electromagnet is controlled by a first control circuit module 9; the second electromagnet is controlled by a second control circuit module 8, the first control circuit module and the second control circuit module have the same circuit, and the generation of the magnetic fields of the first electromagnet and the second electromagnet can be controlled simultaneously through one control circuit module. The control circuit module comprises a receiving end control circuit and a transmitting end control circuit, wherein the receiving end control circuit is connected with the electromagnet, and the receiving end control circuit is in wireless connection with the transmitting end control circuit.
The transmitting end control circuit comprises a bus voltage detection system which is used for receiving an elevator ascending signal or a descending signal sent by the elevator main board according to the elevator running state, and meanwhile, the bus voltage detection system is also used for detecting a bus voltage difference value generated by the weight difference between the counterweight side and the car side of the elevator. The receiving end control circuit comprises a single chip microcomputer U2, a voltage input end of the single chip microcomputer U2 is connected with a first voltage VCC1, the single chip microcomputer U2 is in communication connection with the wireless control circuit, and the wireless control circuit receives wireless signals sent by the transmitting end control circuit. One I/O end of the singlechip U2 is connected with a second voltage VCC2 through a voltage detection sensor S1, two ends of the sensor S1 are connected with a first magnetic field generating device to form a magnetic field generating branch, and any I/O end of the singlechip U2 can be connected with one magnetic field generating branch to control a plurality of magnetic field generating devices.
The invention forms a novel energy-saving elevator system by combining the power generation module and the control circuit, judges whether the motor of the elevator is in a motor state or in a generator state in the operation process of the elevator through the detection of the operation state of the elevator by the transmitting end control circuit, then sends a corresponding control signal to the receiving end control circuit, and the receiving end control circuit controls the work of the power generation collection module, so that the power generation collection module is determined to start power generation or end power generation.
The rotating power generation unit is connected with the wheel assembly in the elevator through the connecting rod, when the elevator ascends or descends, the wheel assembly can be driven to rotate, the rotating wheel assembly enables the rotating power generation unit to rotate through the connecting rod, and the magnetic field generation unit is arranged around the transmission power generation unit in a surrounding mode; when the elevator runs and the motor consumes electric energy to drag, the magnetic field generating unit does not generate a magnetic field, and the rotating power generating unit does not generate power even if rotating; when the elevator runs and does not need the motor to consume electric energy, the magnetic field generating unit generates a magnetic field, the power generating unit is rotated to cut the magnetic induction line to generate power, and the electric energy is collected through the electric energy collecting device.
The magnetic field generating units are arranged as magnetic field generating devices which are arranged in opposite directions in a pair-matching way, the magnetic field generating devices can be electromagnets, a magnetic field is generated between the two electromagnets after a pair of electromagnets are electrified, and the rotary power generating unit can generate electricity magnetically in the magnetic field range; the magnetic field generated by the electromagnet can be controlled to be generated, disappeared and strong or weak by the on-off of the current and the magnitude of the current, so that the control is convenient.
In the invention, due to the difference of weight difference between the counterweight side and the car side of the elevator, the motor of the elevator is in a motor state or a generator state when the elevator ascends or descends, the motor consumes electric energy of a power grid when in the motor state, and the motor generates electric energy when in the generator state, and the difference of bus voltages is different in the two states, so that the wireless signal sent by a transmitting end control circuit can be selected by detecting the bus voltage difference and combining the ascending or descending signal of the elevator.
According to the invention, the singlechip U2 controls the communication or interruption of the I/O end according to the received signal, and when the I/O end is communicated, the voltage detection sensor connected with the I/O end detects that voltage exists, so that the voltage detection sensor is conducted, and the magnetic field generating devices connected with the two ends of the sensor generate a magnetic field; when the I/O is interrupted, the voltage detection sensor connected with the I/O terminal does not detect the voltage, the voltage detection sensor is disconnected, and the magnetic field generating devices connected with the two ends of the sensor do not generate magnetic fields. And meanwhile, the second voltage is an adjustable voltage, and the magnitude of the current passing through the magnetic field generating device is controlled by adjusting the magnitude of the second voltage so as to control the strength of the generated magnetic field.
The invention is provided with the car speed threshold value, so that the car has maximum speed limitation, when the car descends or ascends to exceed the car speed threshold value, the car can have the problems of improper stop position or difficult stop and the like, the risk of accidents can be increased, when the rotating power generation unit cuts the magnetic induction line to generate power, the rotating power generation unit receives the acting force of the connecting rod to rotate, and simultaneously the rotating power generation unit can receive ampere force after generating electricity to generate current, the direction of the ampere force is just opposite to the acting force of the connecting rod to the rotating power generation unit, therefore, when the magnetic field strength is increased to enable the ampere force moment to be larger than the acting force moment of the connecting rod to the rotating power generation unit, the rotating speed of the rotating power generation unit cutting the magnetic induction line is reduced, and the corresponding rotating speed of the wheel assembly connected with the rotating power generation unit is reduced, so that the speed of the car can be reduced.
The rotary power generation unit can be connected with any wheel component capable of rotating in an elevator system, so that braking performed by heating and consuming energy through the braking resistor in the prior art is changed into braking performed by converting gravitational potential energy into generated electric energy, and meanwhile, a plurality of rotary power generation units can be respectively connected with different wheel components, and the braking capacity and the electric energy collection rate of the elevator are improved. According to the invention, the rotating winding is wound, the winding direction of the coil is perpendicular to the magnetic field direction generated by the magnetic field generating device, so that the effective length of the coil for cutting the magnetic induction wire is maximized, and the generated energy in unit time is improved.
In the invention, as shown in fig. 3, a transmitting end control circuit comprises a motor M1, wherein a U of the motor M1 is connected with an emitter of a triode Q1 and a collector of a triode Q2; the V of the motor M1 is connected with the emitter of the triode Q3 and the collector of the triode Q4; the W of the motor M1 is connected with the emitter of the triode Q5 and the collector of the triode Q6; the collector of the triode Q1, the collector of the triode Q3 and the collector of the triode Q5 are connected with one end of the capacitor C1 and the other end of the inductor L1; the emitter of the triode Q2, the emitter of the triode Q4 and the emitter of the triode Q5 are connected with the other end of the capacitor C1 and the other end of the inductor L2; one end of the inductor L1 is an a end, and one end of the inductor L2 is a b end; the bus voltage detection system is connected between the end a and the end b and is connected with the end up and the end d of the elevator main board U1; the end a is respectively connected with the cathode of the diode D1, the cathode of the diode D3 and the cathode of the diode D5; the end b is respectively connected with the anode of the diode D2, the anode of the diode D4 and the anode of the diode D6; the commercial power R is connected with the anode of the diode D1 and the cathode of the diode D2; the commercial power S is connected with the anode of the diode D3 and the cathode of the diode D4; the mains supply T is connected to the anode of diode D5 and the cathode of diode D6.
The receiving end control circuit is shown in fig. 4, and comprises a singlechip U2, wherein the voltage input end of the singlechip U2 is connected with a first voltage VCC1, the RXD end and the TXD end of the singlechip U2 are respectively and correspondingly connected with the TXD end and the RXD end of the wireless control circuit, the wireless control circuit and the bus voltage detection system are connected through wireless, and the wireless control circuit is also powered by using the first voltage VCC 1; a voltage detection sensor S1 is connected between a first I/O end of the singlechip U2 and a second voltage VCC2, and two ends of the sensor S1 are connected with a magnetic field generating device; a voltage detection sensor Sn is connected between the nI/O end of the singlechip U2 and the second voltage VCC2, and two ends of the sensor Sn are connected with a magnetic field generating device; in the circuit of this embodiment, the magnetic field generating device is an electromagnet, and the second voltage VCC2 is adjustable, and can be increased or decreased; the different I/O ends of the singlechip U2 are connected with the voltage VCC2 through different voltage detection sensors, and the two ends of each sensor are connected with the magnetic field generating devices, so that the control of one singlechip on a plurality of magnetic field generating devices is realized.
In the first embodiment, a group of energy-saving elevator systems, namely a circuit control module and a power generation and collection module are arranged in one elevator, and the power generation and collection module is connected with a wheel assembly of any one elevator among a car top wheel, a traction wheel, a guide wheel or a counterweight wheel in the elevator system.
In this embodiment, the single-chip microcomputer U2 adopts a single-chip microcomputer with a model number of STC89C52, the elevator main board U1 is a SMART800 main board, the up end of the elevator main board sends an elevator rising signal or the d end sends an elevator falling signal to the bus voltage detection system, and meanwhile, the potential difference between the a end and the b end in the circuit is also detected by the bus voltage detection system. When the potential difference between the a end and the b end in the bus voltage detection system is assigned to be 0, the motor M1 of the elevator is used as a motor to consume electric energy to do work; when the potential difference between the a terminal and the b terminal in the bus voltage detection system is assigned to "1", it means that the motor M1 of the elevator generates electric energy as a generator. The bus voltage detection system combines the received up-end signal or d-end signal and the a-end b-end potential difference value signal to send corresponding wireless signals to the wireless control circuit, the wireless control circuit transmits the received signals to the singlechip U2, and the singlechip U2 controls the communication or interruption of the corresponding I/O end according to the received signals. When the I/O terminal is interrupted, the voltage detection sensor cannot detect that the voltage cannot be conducted at the branch terminal where the I/O terminal is located, so that no current in the electromagnet passes through and no magnetic field is generated; when the I/O ends are communicated, the voltage detection sensor detects voltage to conduct, and electromagnets connected to the two ends of the sensor generate a magnetic field. Meanwhile, in the embodiment, a control circuit module controls the on-off of all magnetic field generating devices or electromagnets in one magnetic field generating unit.
In this embodiment, a frequency converter control board is also provided, which converts the mains electricity into electricity of different voltages to be supplied to different parts of the elevator system, including a first voltage VCC1 and a second voltage VCC2, wherein the second voltage VCC2 is adjustable, which can be increased or decreased depending on the signal of the control module. In addition, the frequency converter control board is also respectively connected with the base electrode of the triode Q1, the base electrode of the triode Q2, the base electrode of the triode Q3, the base electrode of the triode Q4, the base electrode of the triode Q5 and the base electrode of the triode Q6, and the on-off of the triode is controlled by controlling the voltage output to the base electrode.
The weight of the car system varies due to the number of persons or goods inside during the operation of the elevator, while the weight of the counterweight system is unchanged, so that there are four different operating states of the elevator system depending on the weight difference between the car system and the counterweight system and the direction of operation of the elevator. Different binary logic information codes are set in the control circuit according to different running states of the elevator system, and the receiving end control circuit controls the generation of an electromagnet magnetic field according to the received logic information codes, as shown in the following table:
| state of car | Ascending (up) | Descending (d) | Potential difference assignment at a terminal and b terminal |
| DW>DX | 1 | 0 | 1 |
| DW≥DX | 0 | 1 | 0 |
| DW≤DX | 1 | 0 | 0 |
| DW<DX | 0 | 1 | 1 |
Wherein DW represents the weight of the counterweight side of the elevator, DX represents the weight of the elevator car, when the elevator is in an ascending state, the ascending signal output of the up end of the main board of the elevator is 1, and the descending signal output of the d end of the main board of the elevator is 0; when the elevator is in a descending state, the ascending signal output at the up end of the elevator main board is 0, and the descending signal output at the d end is 1. Meanwhile, due to the weight difference between the counterweight side and the elevator car, in the process of ascending or descending of the elevator car, a motor state and a generator state exist in the motor of the elevator, the potential difference of the end a and the end b is assigned to be 0 when the motor is in the motor state, and the potential difference of the end a and the end b is assigned to be 1 when the motor is in the generator state; therefore, four running states of the elevator are provided with four logic information codes which are in one-to-one correspondence in the control circuit, and the on-off of the electromagnet is controlled through the logic information codes.
When the weight DW of the counterweight side of the elevator is larger than the weight DX of the elevator, and meanwhile, the up end of the main board of the elevator sends out an ascending signal, namely the elevator ascends, the motor of the elevator does not consume electric energy, and at the moment, the elevator system pulls the counterweight system to descend by taking the weight difference DW-DX as resultant force, which is equivalent to acting on the elevator to drag the elevator to ascend. In the state, the bus voltage detection system receives an up-end rising signal '1', receives a d-end falling signal '0', assigns a potential difference between an a end and a b end to be '1' in the bus voltage detection system, and judges that an electromagnet needs to be switched on to generate a magnetic field. Therefore, the bus voltage detection system sends a binary logic information code '101' to the receiving end control circuit, and the receiving end control circuit receives the logic information code '101', and then turns on the corresponding voltage detection sensor circuit, so that current in the corresponding electromagnet passes through to generate a magnetic field. The wheel assembly of the elevator comprises a car top wheel, a traction wheel, a guide wheel or a counterweight wheel which drives the rotary winding to rotate, so that the coil cuts the magnetic induction line to generate electric energy and transmits the electric energy to the electric energy collecting device.
When the weight DW of the counterweight side of the elevator is greater than or equal to the weight DX of the elevator car, and the d end of the elevator main board sends out a descending signal, namely the elevator car descends, the motor of the elevator needs to consume electric energy of a power grid, at the moment, the elevator system needs to overcome the difference value DW-DX of the weight to drive the elevator car to descend by the motor, and under the condition, the motor of the elevator is in a power consumption state. At this time, the bus voltage detection system receives the up signal "0" at the up end and receives the down signal "1" at the d end, and meanwhile, the potential difference between the a end and the b end is assigned to "0" in the bus voltage detection system, and it is judged that no magnetic field is generated at this time, so that no current can flow in the electromagnet. The bus voltage detection system sends binary logic information code '010' to the wireless control circuit, and the receiving end control circuit interrupts the corresponding voltage detection sensor circuit after receiving the logic information code '010', so that the corresponding electromagnet does not have current and does not generate a magnetic field. The wheel assembly of the elevator comprises a car top wheel, a traction sheave, a guide wheel or a counterweight wheel which still drives the rotary winding to rotate, but does not generate electricity.
When the weight DW of the counterweight side of the elevator is smaller than or equal to the weight DX of the elevator car, and the up end of the main board of the elevator sends out a rising signal, namely the elevator car rises, the motor of the elevator needs to consume electric energy of a power grid, at the moment, the elevator system needs to overcome the difference DX-DW of the weight and drag the elevator car to rise by the motor, and under the condition, the motor of the elevator is in a power consumption state. At this time, the bus voltage detection system receives the up signal "1" of the up end and receives the down signal "0" of the d end, meanwhile, the potential difference between the a end and the b end is assigned to be "0" in the bus voltage detection system, and the fact that no magnetic field is generated at this time is judged, so that no current can flow in the electromagnet. The bus voltage detection system sends a binary logic information code 100 to the wireless control circuit, and the receiving end control circuit interrupts a corresponding voltage detection sensor circuit after receiving the logic information code 100, so that no current passes through a corresponding electromagnet and no magnetic field is generated. The wheel assembly of the elevator comprises a car top wheel, a traction sheave, a guide wheel or a counterweight wheel which still drives the rotary winding to rotate, but does not generate electricity.
When the weight DW of the counterweight side of the elevator is smaller than the weight DX of the elevator car, and the d end of the elevator main board sends out a descending signal, namely the elevator car descends, the motor of the elevator does not consume electric energy, and the elevator system pulls the counterweight system to ascend by taking the difference DX-DW of the weight of the counterweight side and the weight of the elevator car side as resultant force, which is equivalent to acting on the elevator to drag the elevator car to descend. At the moment, the bus voltage detection system receives an up-end rising signal '0' and a d-end falling signal '1', meanwhile, the potential difference between the a end and the b end is assigned to be '1' in the bus voltage detection system, and the situation that the electromagnet needs to be connected to generate a magnetic field is judged. The bus voltage detection system sends binary logic information code '011' to the wireless control circuit, and the receiving end control circuit receives the logic information code '011', and then turns on the corresponding voltage detection sensor circuit, so that current in the corresponding electromagnet passes through to generate a magnetic field. The wheel assembly of the elevator comprises a car top wheel, a traction wheel, a guide wheel or a counterweight wheel which drives the rotary winding to rotate, so that the coil cuts the magnetic induction line to generate electric energy and transmits the electric energy to the electric energy collecting device.
Meanwhile, an elevator speed threshold value is also input and set in an elevator main board of the transmitting end control circuit, when the motor of the elevator consumes electric energy, the ascending or descending of the elevator car of the elevator system is controlled through the rotation of the motor, so that the ascending or descending speed of the elevator car is controlled by the motor at the moment and cannot exceed the elevator speed threshold value. When the motor of the elevator is in a generator state, the ascending or descending of the elevator system is not controlled by the motor, but is achieved through the conversion of gravitational potential energy between the counterweight system and the elevator car, but because the weights of the counterweight system and the elevator car are different, an acceleration state exists in the ascending or descending process of the elevator car at the moment, namely the gravitational potential energy of the whole elevator system is continuously reduced from the whole, and the reduced gravitational potential energy is continuously converted into kinetic energy. After connecting the power generation and collection module and the control module of the present invention, the overall reduced gravitational potential energy of the elevator system can be converted into electrical energy for storage. However, when the current in the electromagnet is constant, the generated power of the whole power generation collection module is only related to the rotation speed of the rotation power generation unit, and when the generated power is smaller than the power of the reduction of the gravitational potential energy of the whole elevator system, the reduced gravitational potential energy cannot be completely converted into electric energy, so that part of the kinetic energy converted into the elevator car still increases the speed of the elevator car to rise or fall, and the speed of the elevator car is increased continuously to exceed the elevator speed threshold value. When the speed of the car exceeds the speed threshold value of the elevator, the transmitting end control circuit sends an overspeed signal together with the logic information code to the receiving end control circuit, and after the overspeed signal is received, the second voltage VCC2 is increased, so that the current in the electromagnet is increased, and the strength of the magnetic field generated by the electromagnet is increased. Due to the increase of the magnetic field intensity, the generated power of the power generation collection module is synchronously increased to completely convert the power of the elevator system with reduced gravitational potential energy; then under the condition of further increasing the magnetic field intensity, the generated power is increased, larger current is generated in the coil in the rotating power generation unit, so that the ampere force moment borne by the coil is larger than the moment of acting force applied to the rotating power generation unit by the wheel assembly of the elevator in the descending process of the elevator car, the speed reduction effect is generated on the elevator car until the ascending or descending speed of the elevator car is smaller than the speed threshold value of the elevator, at the moment, the transmitting control end circuit transmits a normal speed signal, and the second voltage VCC2 is gradually reduced, so that the speed limiting process of the elevator car is completed.
In the second embodiment, a plurality of power generation and collection modules are provided on the basis of the first embodiment, as shown in fig. 5, that is, a circuit control module and a plurality of power generation and collection modules are provided in one elevator, and the circuit control module includes a transmitting end control circuit and a plurality of receiving end control circuits, where the receiving end control circuits and the power generation and collection modules are in one-to-one correspondence. The power generation collection module is connected with any two or more wheel assemblies of a car top wheel, a traction wheel, a guide wheel and a counterweight wheel in the elevator system, and one power generation collection module corresponds to one wheel assembly. At this time, the binary logic information code in the control circuit module needs to be corrected correspondingly, so that the control circuit module needs to control whether the electromagnet generates a magnetic field or not, and meanwhile, needs to determine a wheel assembly connected with the power generation collection module where the electromagnet is located. The control circuit module can be directed to control the power generation and collection module connected with a certain wheel assembly. Thus, in this embodiment, two parts are required for binary logic information encoding, the first part encoding the wheel assembly, wherein the top sheave is "00", the traction sheave is "01", the guide sheave is "10", and the counterweight sheave is "11"; the second part is the logic information code in the first embodiment, and the second part is the binary logic information code in the first embodiment. In "01101", the first two "01" means that the control object of the logic information code is a power generation collection module connected to the traction sheave, and the last three "101" means that the electromagnet in the power generation collection module is controlled to generate a magnetic field, and the rotating power generation unit rotates and cuts the magnetic induction line to generate power.
The foregoing embodiments are further illustrative and explanatory of the invention, as is not restrictive of the invention, and any modifications, equivalents, and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (3)
1. An energy efficient elevator system, comprising:
the control circuit module comprises a transmitting end control circuit and a receiving end control circuit which are connected in a wireless mode; the transmitting end control circuit is used for detecting the running state of the elevator and transmitting wireless signals; the receiving end control circuit is used for receiving the wireless signals and controlling the work of the power generation collection module;
the power generation and collection module is used for generating power and generating electric energy and comprises a rotation power generation unit and a magnetic field generation unit arranged around the rotation power generation unit; the rotating power generation unit comprises a rotating winding and a plurality of connecting rods fixedly connected to the rotating winding, and the connecting rods are connected with a wheel assembly in the elevator;
the transmitting end control circuit comprises an elevator main board, and the elevator main board sends an elevator lifting motion signal to the bus voltage detection system; the bus voltage detection system detects a bus voltage difference value and receives an ascending or descending signal from an elevator main board; when the elevator is judged to need to consume extra electric energy to operate according to the bus voltage difference value and the lifting signal, the receiving end control circuit receives the signal and controls the magnetic field generating unit to generate no magnetic field; when judging that the elevator does not need to consume electric energy to run, the receiving end control circuit receives a signal and controls the magnetic field generating unit to generate a magnetic field;
the magnetic field generating unit comprises a plurality of magnetic field generating devices which are arranged in a matched mode in pairs, and the rotating power generating unit is positioned in the range of the magnetic field generated by the magnetic field generating devices;
the receiving end control circuit comprises a singlechip U2 and a wireless control circuit which are in communication connection, and the wireless control circuit is in wireless connection with the transmitting end control circuit; the I/O end of the singlechip U2 is connected with a second voltage through a magnetic field generation branch, and the magnetic field generation branch comprises a voltage detection sensor and magnetic field generation devices arranged at two ends of the voltage detection sensor;
the transmitting end control circuit is provided with a car speed threshold value, and when the rising or falling speed of the car exceeds the car speed threshold value, the transmitting end control circuit sends an overspeed signal to the control end receiving circuit, and the receiving end control circuit controls the magnetic field generating device to increase the magnetic field intensity, so that the car speed is reduced until the speed is lower than the car speed threshold value.
2. An energy saving elevator system according to claim 1, characterized in that a coil is provided in the rotating winding, and the output of the rotating power generating unit is connected to an electric energy collecting device.
3. An energy saving elevator system according to claim 1, characterized in that the bus voltage detection system is capable of detecting a bus voltage difference in the circuit, the bus voltage difference being determined by the difference between the weight of the counterweight side and the weight of the car side of the elevator.
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