CN212969152U

CN212969152U - Intelligent security elevator protection system for building

Info

Publication number: CN212969152U
Application number: CN202021344395.4U
Authority: CN
Inventors: 姚亦飞; 杨雪明; 朱伟; 潘钰瑛; 施建东; 俞嘉莉; 柴国峰; 徐宏亮
Original assignee: Zhejiang Yingdige Intelligent Engineering Co ltd
Current assignee: Zhejiang Yingdige Intelligent Engineering Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-04-13
Anticipated expiration: 2030-07-10

Abstract

The utility model provides an intelligent security elevator protection system for building, it is including first current transformer, first diode, first zener diode, first potentiometre, first time base integrated circuit, second time base integrated circuit, first current transformer, second current transformer, third current transformer connects between power cord and the car starter motor after connecting in parallel, parallelly connected back one end and rectifier bridge, fourth diode one end is connected, parallelly connected back other end respectively with first condenser, fifth diode one end, the fourth diode other end is connected, the junction of fifth diode and fourth diode connects the base of transistor. After this scheme of adoption, its is rational in infrastructure, detection control is effectual.

Description

Intelligent security elevator protection system for building

Technical Field

The utility model belongs to the technical field of the intelligent control technique and specifically relates to indicate an intelligent security elevator protection system for building.

Background

The working power supply and the standby power supply of the traditional intelligent security elevator are controlled through the fuse, and if the situation of frequent occurrence of electricity jumping (tripping) occurs, the fuse can be repeatedly switched, so that great influence can be generated on the motor.

Disclosure of Invention

An object of the utility model is to overcome the not enough of prior art, provide a rational in infrastructure, detect effectual intelligent security elevator protection system of control for building.

In order to achieve the above object, the present invention provides a technical solution: an intelligent elevator protection system for building security comprises a first current transformer, a first diode, a first voltage stabilizing diode, a first potentiometer, a first time base integrated circuit and a second time base integrated circuit, wherein the first current transformer, the second current transformer and the third current transformer are connected between a power line and a lift car starting motor after being connected in parallel, one end of the first current transformer, the second current transformer and the third current transformer are connected with a rectifier bridge and one end of a fourth diode after being connected in parallel, the other end of the first current transformer, the first time base integrated circuit and the second time base integrated circuit are respectively connected with one end of a first capacitor, one end of a fifth diode and the other end of the fourth diode, the connection part of the fifth diode and the fourth diode is connected with the base electrode of a transistor, the other end of the fifth diode is connected with one end of the first voltage stabilizing diode, the other end of the first voltage stabilizing diode, one end of the first potentiometer, the 1 st pin of the first time base integrated circuit, One end of a fourth capacitor, one end of a fifth capacitor, the 1 st pin of a second time base integrated circuit, the 3 rd pin of the second time base integrated circuit, one end of a seventh diode, one end of a relay and one end of the seventh capacitor are connected and then connected with one end of a second voltage stabilizing diode; the collector of the transistor is connected with one end of a first resistor, one end of a second capacitor and the No. 2 pin of a second time-base integrated circuit, and the rectifier bridge is connected with the other end of a fourth diode, the emitter of the transistor, the other end of the second capacitor, the No. 4 pin of the first time-base integrated circuit, the No. 8 pin of the first time-base integrated circuit, one end of the second resistor, one end of the fourth resistor, the No. 8 pin of the second time-base integrated circuit and the other end of a seventh capacitor in sequence and then connected with the other end of a second voltage stabilizing diode.

The 3 rd pin of the first time base integrated circuit is connected with the 4 th pin of the second time base integrated circuit, the other end of the second resistor is respectively connected with one end of a sixth diode, one end of a third resistor and the 7 th pin of the first time base integrated circuit, the other end of the third resistor is respectively connected with the 6 th pin of the first time base integrated circuit, the other end of the sixth diode and the other end of a fourth capacitor, the other end of the fourth resistor is respectively connected with one end of a second potentiometer and the 7 th pin of the second time base integrated circuit, the other end of the second potentiometer is respectively connected with the other end of the fifth capacitor, the 2 nd pin of the second time base integrated circuit and the 6 th pin of the second time base integrated circuit, the 3 rd pin of the second time base integrated circuit is connected with the other end of a seventh diode and one end of a light emitting diode, and the other end of the light emitting diode

The other end of the first resistor is connected with the other end of the first potentiometer.

And a third capacitor is connected to the 3 rd pin of the first time-base integrated circuit.

And a sixth capacitor is connected to the 3 rd pin of the second time base integrated circuit.

By adopting the above technical scheme, the utility model, be connected with ac contactor KM on rectifier bridge, the power cord, through adopting phase impulse type detection control mode, can be when the outage appears in the three-phase alternating current, the working power supply of automatic cutout motor. The scheme comprises a phase pulse detection circuit, a monostable trigger circuit, a control circuit and a power supply circuit, wherein the phase pulse detection circuit consists of a current transformer TAl-TA3, a diode Dl-VD5, a voltage-stabilizing diode VSl and a capacitor Cl; the monostable trigger circuit consists of a transistor V, a resistor Rl-R3, a potentiometer RPl, capacitors C2-C4 and a diode VD6, and the monostable trigger circuit can automatically cut off the working power supply of the motor when three-phase alternating current is cut off. After this scheme of adoption, its is rational in infrastructure, detection control is effectual.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings, and the preferred embodiment of the present invention is: referring to fig. 1, the intelligent security elevator protection system for buildings according to this embodiment includes a first current transformer TAl, a first diode VDl, a first voltage stabilizing diode VSl, a first potentiometer RPl, a first time-base integrated circuit IC1, a second time-base integrated circuit IC2, a third capacitor C3 is connected to the 3 rd pin of the first time-base integrated circuit IC1, a sixth capacitor C6 is connected to the 3 rd pin of the second time-base integrated circuit IC2, the first current transformer TAl, the second current transformer TA2, and the third current transformer TA3 are connected in parallel and then connected between a power line and a car starting motor, one end of the parallel connection is connected to a rectifier bridge and one end of a fourth diode VD4, the other end of the parallel connection is connected to the first capacitor Cl, one end of a fifth diode VD5, the other end of the fourth diode VD4, the connection between the fifth diode VD5 and the fourth diode VD4 is connected to the base of a transistor V, the other end of the fifth diode VD5 is connected with one end of a first voltage-stabilizing diode VSl, the other end of the first capacitor Cl is sequentially connected with a rectifier bridge, the other end of the first voltage-stabilizing diode VSl, one end of a first potentiometer RPl, the 1 st pin of a first time-base integrated circuit IC1, the 3 rd pin of a first time-base integrated circuit IC1, one end of a fourth capacitor C4, one end of a fifth capacitor C5, the 1 st pin of a second time-base integrated circuit IC2, the 3 rd pin of a second time-base integrated circuit IC2, one end of a seventh diode VD7, one end of a relay K and one end of a seventh capacitor C7, and then is connected with one end of a second voltage-stabilizing diode VS 2; a collector of the transistor V is connected to one end of the first resistor R1, one end of the second capacitor C2, and the 2 nd pin of the second time-base integrated circuit IC2, the rectifier bridge is sequentially connected to the other end of the fourth diode VD4, an emitter of the transistor V, the other end of the second capacitor C2, the 4 th pin of the first time-base integrated circuit IC1, the 8 th pin of the first time-base integrated circuit IC1, one end of the second resistor R2, one end of the fourth resistor R4, the 8 th pin of the second time-base integrated circuit IC2, and the other end of the seventh capacitor C7, and then connected to the other end of the second voltage-stabilizing diode VS2, and the other end of the first resistor R1 is connected to the other end of the first potentiometer RPl.

The 3 rd pin of the first time base integrated circuit IC1 is connected with the 4 th pin of the second time base integrated circuit IC2, the other end of the second resistor R2 is respectively connected with one end of a sixth diode VD6, one end of a third resistor R3 and the 7 th pin of the first time base integrated circuit IC1, the other end of the third resistor R3 is respectively connected with the 6 th pin of the first time base integrated circuit IC1, the other end of the sixth diode VD6 and the other end of a fourth capacitor C4, the other end of the fourth resistor R4 is respectively connected with one end of a second potentiometer RP2, the 7 th pin of the second time-base integrated circuit IC2 is connected, the other end of the second potentiometer RP2 is respectively connected with the other end of the fifth capacitor C5, the 2 nd pin of the second time-base integrated circuit IC2 and the 6 th pin of the second time-base integrated circuit IC2, the 3 rd pin of the second time-base integrated circuit IC2 is connected with the other end of the seventh diode VD7 and one end of the light-emitting diode VL, and the other end of the light-emitting diode VL is connected with the other end of the relay K.

The charging speed of C2 can be changed by adjusting the resistance value of RPl; the time of the charging delay of C5 can be changed by adjusting the resistance of RP 2. 1/4W metal film resistors are selected as the Rl-R5. RPl and RP2 are selected from organic solid potentiometers or variable resistors. Gl and C7 are aluminum electrolytic capacitors with voltage withstanding value of 25V, C2-C6 are monolithic capacitors or dacron capacitors, and C8 is CBB capacitor with voltage withstanding value of 450V. VDl-VDll are all 1N4007 type silicon rectifier diodes. VSI is 2CWl3 type silicon voltage-stabilizing diode, VS2 is 1N4742 type silicon voltage-stabilizing diode. And a red light-emitting diode with the diameter of 5mm is selected for VL. V is S8050 type silicon PNP transistor. lCl and IC2 are both NE555 type time base integrated circuits. K is JRX-l3F type l2V direct current relay. And all TAl-TA3 adopt a straight-through current transformer. The knife switch Q, the fuse FU, the alternating current contactor KM, the thermal relay KR and the control buttons SI and S2 still use the original main control circuit device of the motor.

The phase pulse detection circuit consists of a current transformer TAl-TA3, a diode VDl-VD5, a voltage stabilizing diode VSl and a capacitor Cl. The monostable trigger circuit consists of a transistor V, resistors Rl-R3, a potentiometer RPl, capacitors C2-C4, a diode VD6 and a time base integrated circuit ICl. The time delay control circuit consists of a time base integrated circuit IC2, a resistor R4, capacitors C5 and C6, a diode VD7, a light-emitting diode VL, a relay K and an alternating current contactor; the power supply circuit is composed of a voltage reduction capacitor C8, a resistor R5, rectifying diodes VD8-VDll, a filter capacitor C7 and a voltage stabilizing diode VS 2. The alternating current 220V voltage is subjected to voltage reduction by C8, rectification by VD8-VDll, voltage stabilization by VS2 and filtering by C7, and then the + l2V working voltage is provided for V, ICl and IC 2. When the phase sequence of the three-phase alternating current power supply is normal, the phase difference of the phase currents is 120 degrees, the motor M is started to operate normally, zero-crossing detection pulses detected by a current transformer TAl-TA3 are uniform and symmetrical, the time interval is 6.6 ms, and V is in an intermittent conduction state. When V is turned on, C2 discharges rapidly through V, so that the voltage of pin 2 of ICl is always lower than 4V, and pin 3 outputs low level. IC2 is in a forced reset state and its pin 3 also outputs a low. VL does not emit light, K is in a released state, and the motor M operates normally. When three-phase alternating current is in open-phase, the current waveform detected by the TAl-TA3 is asymmetric, the interval of zero-crossing detection pulses is larger than 6.6 ms, the conduction time of V is shortened, the cut-off time is prolonged, C2 has enough time for charging, the voltage of an ICl pin 2 is increased to be more than 4V, a pin 3 outputs high level, an IC2 is set, a pin 3 of an IC2 outputs high level, VL is lightened, an external system is prompted, the working power supply is powered off at the moment, K is powered on and closed, a normally closed contact of K is disconnected, an alternating current contactor KM is released, M stops rotating and enters a protection state, and after the power is on, the reset needs to be confirmed manually. When the working power supply is cut off, the standby power supply is adopted to supply power through an external system, so that the orderly switching of the working power supply and the standby power supply is ensured.

The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an intelligent security elevator protection system for building, it includes first current transformer (TAl), first diode (VDl), first zener diode (VSl), first potentiometre (RPl), first time base integrated circuit (IC 1), second time base integrated circuit (IC 2), its characterized in that: a first current transformer (TAl), a second current transformer (TA 2) and a third current transformer (TA 3) are connected in parallel and then connected between a power line and a car starting motor, one end of the first current transformer is connected with a rectifier bridge and one end of a fourth diode (VD 4), the other end of the first current transformer is connected with a first capacitor (Cl), one end of a fifth diode (VD 5) and the other end of the fourth diode (VD 4), the joint of the fifth diode (VD 5) and the fourth diode (VD 4) is connected with the base of a transistor (V), the other end of the fifth diode (VD 5) is connected with one end of a first voltage-stabilizing diode (VSl), the other end of the first capacitor (Cl) is sequentially connected with the rectifier bridge, the other end of the first voltage-stabilizing diode (VSl), one end of a first potentiometer (RPl), the 1 st pin of a first time-base integrated circuit (IC 1), the 3 rd pin of the first time-base integrated circuit (IC 1) and one end of the fourth capacitor (C4), One end of a fifth capacitor (C5), the 1 st pin of a second time-base integrated circuit (IC 2), the 3 rd pin of the second time-base integrated circuit (IC 2), one end of a seventh diode (VD 7), one end of a relay (K) and one end of a seventh capacitor (C7) are connected and then connected with one end of a second voltage-stabilizing diode (VS 2); the collector of the transistor (V) is connected with one end of a first resistor (R1), one end of a second capacitor (C2) and the 2 nd pin of a second time-base integrated circuit (IC 2), and the rectifier bridge is sequentially connected with the other end of a fourth diode (VD 4), the emitter of the transistor (V), the other end of the second capacitor (C2), the 4 th pin of a first time-base integrated circuit (IC 1), the 8 th pin of a first time-base integrated circuit (IC 1), one end of a second resistor (R2), one end of the fourth resistor (R4), the 8 th pin of a second time-base integrated circuit (IC 2) and the other end of a seventh capacitor (C7) which are connected and then connected with the other end of a second voltage stabilizing diode (VS 2).

2. The intelligent security elevator protection system for buildings according to claim 1, characterized in that: the 3 rd pin of the first time base integrated circuit (IC 1) is connected with the 4 th pin of the second time base integrated circuit (IC 2), the other end of the second resistor (R2) is respectively connected with one end of a sixth diode (VD 6), one end of a third resistor (R3) and the 7 th pin of the first time base integrated circuit (IC 1), the other end of the third resistor (R3) is respectively connected with the 6 th pin of the first time base integrated circuit (IC 1), the other end of a sixth diode (VD 6) and the other end of a fourth capacitor (C4), the other end of the fourth resistor (R4) is respectively connected with one end of a second potentiometer (RP 2) and the 7 th pin of the second time base integrated circuit (IC 2), the other end of the second potentiometer (RP 2) is respectively connected with the other end of a fifth capacitor (C5), the 2 nd pin of the second time base integrated circuit (IC 2), the 6 th pin of the second time base integrated circuit (IC 2) and the other end of a seventh time base integrated circuit (IC 68692) is connected with the other end of a seventh time base integrated circuit (VD 3) and the second time base integrated circuit (VD 638, One end of the light emitting diode (VL) is connected, and the other end of the light emitting diode (VL) is connected with the other end of the relay (K).

3. The intelligent security elevator protection system for buildings according to claim 1, characterized in that: the other end of the first resistor (R1) is connected to the other end of the first potentiometer (RPl).

4. The intelligent security elevator protection system for buildings according to claim 1, characterized in that: a third capacitor (C3) is connected to pin 3 of the first time base integrated circuit (IC 1).

5. The intelligent security elevator protection system for buildings according to claim 1, characterized in that: a sixth capacitor (C6) is connected to pin 3 of the second time base integrated circuit (IC 2).