CN2235434Y - Elevator control device by frequency-varying and voltage-varying speed modulation - Google Patents
Elevator control device by frequency-varying and voltage-varying speed modulation Download PDFInfo
- Publication number
- CN2235434Y CN2235434Y CN 95229357 CN95229357U CN2235434Y CN 2235434 Y CN2235434 Y CN 2235434Y CN 95229357 CN95229357 CN 95229357 CN 95229357 U CN95229357 U CN 95229357U CN 2235434 Y CN2235434 Y CN 2235434Y
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- elevator control
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Abstract
The utility model relates to an elevator control device by frequency varying and voltage varying speed regulation. The utility model is characterized in that an elevator hoistway signal circuit is connected with a control circuit, then the elevator hoistway signal circuit is connected with a frequency converter circuit, a signal is input into a motor by the frequency converter circuit, the feedback signal is input into a frequency converter by a feedback circuit of motor measuring speed, relevant auxiliary circuits are provided. The control circuit comprises a PC control circuit and a curved plate circuit. The curved plate circuit is characterized in that the signals obtained from the PC control circuit is sent to a central processing unit (CPU) by a photoelectric isolation circuit, the signals are respectively sent to a fixed memory and an input /output interface circuit by the CPU through an address bus, and the signals are sent to the frequency converter circuit by the fixed memory through a digital /modulo conversion circuit.
Description
The utility model relates to a kind of elevator control gear, especially a kind of frequency-conversion voltage-varying speed elevator control gear.
Elevator be in the modern city building with the closely-related vertical transport instrument of productive life, and the elevator speed governing is directly connected to problem easily such as service property (quality), the running condition of elevator, the saving of the energy.At present, the elevator speed governing of China mostly is the AC two speed driving style of old-fashioned relay control and the driving style of DC generation unit.The elevator speed governing of relay control is difficult to satisfy elevator to ride comfort, leveling accuracy requirement, and the requirement of serviceability and high-speed cruising, and its energy consumption is big, the fault rate height, and maintenance is complicated.And though advanced relatively computer-controlled lift speed is abroad arranged, its cost is very high, very flexible, in the debugging run curve correction and operating maintenance etc. very difficult, do not meet China's national situation.
The purpose of this utility model is exactly to provide a kind of frequency-conversion voltage-varying speed elevator control gear at the deficiency of prior art, it has adopted advanced computer controlled variable-frequency control technique to substitute old type relay control technology, the ride comfort and the langding accuracy of serviceability elevator have been improved greatly, the speed of elevator also can reach 2.0m/s even more than the 4.0m/s, and can save the energy significantly.
The purpose of this utility model is achieved in that a kind of frequency-conversion voltage-varying speed elevator control gear, it mainly connects control circuit by the elevator hoistways signal circuit, connect converter circuit again, frequency changer circuit arrives motor with signal output, the motor speed measuring reactive circuit feeds back signal to frequency converter again, and corresponding auxiliary circuit is formed, wherein said control circuit comprises PC control circuit and curve ruler circuit, described curve ruler circuit will be given central processor CPU from the signal that the PC control circuit obtains by photoelectric isolating circuit, CPU passes to non-volatile memory and input/output interface circuit to signal respectively by address bus, and fixed storage is delivered to converter circuit by several 1 analog conversion circuits with signal.
Described non-volatile memory contains fixed routine, and it can be pulled down from described curve ruler circuit and refill.
Described input/output interface circuit connects the time signal circuit that tests the speed.
The output of described input/output interface circuit connects frequency converter trip circuit and major loop trip circuit by connecing intermediate relay.
Described curve ruler circuit comprises a tachometer circuit, and it directly receives the car signal and inputs to CPU again.
The utility model adopts advanced calculation control converter technique, circuit layout is new reasonable, adopt this device to improve the ratio of performance to price of elevator greatly, enlarged application surface, make the speed of elevator can cover the 1.0-10m/s scope, and its safe reliability, traveling comfort and energy-saving effect all have good improvement.
Below in conjunction with accompanying drawing and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model system principle of compositionality block diagram;
Fig. 2 is a control circuit functional block diagram of the present utility model;
Fig. 3 is a curve ruler circuit theory of the present utility model.
Referring to Fig. 1,2, hoistway signal 1 from elevator has comprised the safety return circuit signal, calling signal, the floor signal, cage position signal etc., input to PC, PC has sent operating instruction to curve ruler after receiving above-mentioned signal comparison car position and exhaling terraced position etc., single/multiple layer instruction and enabled instruction, the instruction of deceleration instruction and flat bed, curve ruler in CPU receive different instructions and judge after, from its inside solidification program, generate the best curve of elevator operation, and this curve signal passed through D/A switch, be input to frequency converter again, after frequency converter will be adjusted again, voltage signal was exported to motor; The positioner that tests the speed simultaneously feeds back to converter circuit with the tachometer signal of motor operating state, finishes the closed loop control of motor; Other, frequency converter also sends zero-speed signal to PC control circuit and is used for the judgement of stopping; Speed in the elevator hoistways signal circuit or position signal are directly exported to the curve ruler circuit, are used for the direct control motor.
Referring to Fig. 2,3, interface circuit in the curve ruler receives the PC signal and handles by electric isolating circuit, input to the run curve that provides lift car after central processor CPU is judged according to the signal analysis of receiving, and PC is constantly passed to CPU with various variable signals, the signal that makes CPU send the run curve different phase is given address bus again, by it signal is delivered to non-volatile memory and input/output interface circuit more respectively, non-volatile memory contains the management program and the operation procedure of curing, it can carry out signal dispatching, curve data management and interrupt management or the like, because its mounting means is easy-to-mount form, so can be in debugging according to every residing different field conditions of elevator, can disassemble at any time, after having revised program, install again, thereby various on-the-spot actual demands have been satisfied very easily, it is stable to reach in optimal comfort sense and its inside solidification program curve, in using muchly, growth that can be not in time and any fluctuation is arranged, skew etc., signal after it will be handled is again delivered to D/A, through amplifying circuit, give frequency converter again with signal output; The input/output interface circuit has the function of certain activity data memory device, can directly receive the signal of PC or car; Output interface part generation time signal is done the usefulness that tests the speed, to cooperate velocity curve control; And producing signal for the PC basis for estimation, other output can be sent trip signal to frequency converter by intermediate relay, and to make run curve be 0 to shut down immediately, also can send trip signal to the major loop lock, and the detection of mode of operation etc. also can be provided; The development that leaves simultaneously after enough I/O ports are provided with is used.Some tachometer circuit on the curve ruler, it receives hypervelocity feedback position signal, can check whether actual driving curve is normal, makes the motor both forward and reverse directions and judges, and directly deliver to CPU, does comprehensive judgement to use; The car safety signal has then improved elevator safety directly for the curve ruler signal most possibly.
The used main chip model of the utility model has:
CPU8031， 74LS373， 27C64， 8155
74LS138， 74LS04， DAC1210， 74LS2210。
Claims (5)
1, a kind of frequency-conversion voltage-varying speed elevator control gear, it mainly connects control circuit by the elevator hoistways signal circuit, connect converter circuit again, frequency changer circuit arrives motor with signal output, the motor speed measuring reactive circuit feeds back signal to frequency converter again, and corresponding auxiliary circuit is formed, it is characterized in that: described control circuit comprises PC control circuit and curve ruler circuit, described curve ruler circuit will be given central processor CPU from the signal that the PC control circuit obtains by photoelectric isolating circuit, CPU passes to non-volatile memory and input/output interface circuit to signal respectively by address bus, and fixed storage is delivered to converter circuit by several 1 analog conversion circuits with signal.
2, a kind of frequency-conversion voltage-varying speed elevator control gear according to claim 1, it is characterized in that: described non-volatile memory contains fixed routine, and it can be pulled down from described curve ruler circuit and refill.
3, a kind of frequency-conversion voltage-varying speed elevator control gear according to claim 1 is characterized in that: described input/output interface circuit connects the time signal circuit that tests the speed.
4, a kind of frequency-conversion voltage-varying speed elevator control gear according to claim 1 is characterized in that: the output of described input/output interface circuit connects frequency converter trip circuit and major loop trip circuit by connecing intermediate relay.
5, a kind of frequency-conversion voltage-varying speed elevator control gear according to claim 1, it is characterized in that: described curve ruler circuit comprises a tachometer circuit, and it directly receives the car signal and inputs to CPU again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95229357 CN2235434Y (en) | 1995-12-29 | 1995-12-29 | Elevator control device by frequency-varying and voltage-varying speed modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95229357 CN2235434Y (en) | 1995-12-29 | 1995-12-29 | Elevator control device by frequency-varying and voltage-varying speed modulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235434Y true CN2235434Y (en) | 1996-09-18 |
Family
ID=33874581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95229357 Expired - Fee Related CN2235434Y (en) | 1995-12-29 | 1995-12-29 | Elevator control device by frequency-varying and voltage-varying speed modulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235434Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484962A (en) * | 2019-01-24 | 2019-03-19 | 通力电梯有限公司 | It is a kind of for escalator or the control device and control method of pavement |
-
1995
- 1995-12-29 CN CN 95229357 patent/CN2235434Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484962A (en) * | 2019-01-24 | 2019-03-19 | 通力电梯有限公司 | It is a kind of for escalator or the control device and control method of pavement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |