WO2013091278A1 - 一种电梯用光电开关 - Google Patents

一种电梯用光电开关 Download PDF

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Publication number
WO2013091278A1
WO2013091278A1 PCT/CN2012/001543 CN2012001543W WO2013091278A1 WO 2013091278 A1 WO2013091278 A1 WO 2013091278A1 CN 2012001543 W CN2012001543 W CN 2012001543W WO 2013091278 A1 WO2013091278 A1 WO 2013091278A1
Authority
WO
WIPO (PCT)
Prior art keywords
photoelectric switch
voltage stabilizing
circuit
integrated circuit
elevator according
Prior art date
Application number
PCT/CN2012/001543
Other languages
English (en)
French (fr)
Inventor
俞杰
周保庆
Original Assignee
宁波电子器材一厂
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁波电子器材一厂 filed Critical 宁波电子器材一厂
Priority to CN201280059485.0A priority Critical patent/CN104024137A/zh
Publication of WO2013091278A1 publication Critical patent/WO2013091278A1/zh

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Classifications

    • 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

Definitions

  • the utility model relates to a photoelectric switch, in particular to a photoelectric switch for an elevator.
  • the elevator generally adopts the frequency conversion control technology, and the traction motor power of the elevator is usually above 15KW.
  • the high-power frequency conversion technology will inevitably cause greater interference to the power grid, and the interference signal will directly affect the photoelectric switch as the leveling sensor. It will cause abnormal load or abnormal operation.
  • the photoelectric switch will not correctly reflect the leveling position of the elevator, and even lead to safety accidents such as elevator closing or topping. Therefore, the reliability of a photoelectric switch as an elevator leveling sensor is particularly important.
  • the technical problem to be solved by the utility model is to provide a photoelectric switch for an elevator, which has the functions of overcurrent short circuit protection and elimination of external interference signals.
  • the technical solution adopted by the utility model to solve the technical problem is: providing a photoelectric switch for an elevator, comprising an infrared transmitting and receiving integrated circuit connected in sequence, wherein an output end of the infrared transmitting and receiving integrated circuit is connected to the light emitting diode through a triode, The base of the transistor is also connected to an overcurrent short circuit protection integrated circuit.
  • the overcurrent short circuit protection integrated circuit is implemented by a BTS4140 chip.
  • the infrared transmitting and receiving integrated circuit is implemented by an IS471F chip.
  • the power terminal of the infrared transmitting and receiving integrated circuit is connected to the voltage stabilizing circuit.
  • the voltage stabilizing circuit is a three-stage series voltage stabilizing circuit.
  • An output filter capacitor is connected in parallel with the output end of the voltage stabilizing circuit.
  • An input filter capacitor is connected in parallel with the input end of the voltage stabilizing circuit.
  • a transient voltage suppression diode is also connected in parallel with the input of the voltage stabilizing circuit.
  • the input end of the voltage stabilizing circuit is connected in series with a finite current resistor and a diode for preventing reverse voltage connection.
  • the utility model has the following advantages and positive effects compared with the prior art:
  • the utility model increases the overcurrent and short circuit protection integrated circuit, and can completely avoid the signal due to excessive load or external interference.
  • the output interface caused by the load abnormality is damaged, and the entire circuit is always in a stable state through the voltage stabilizing circuit. State.
  • FIG. 1 is a circuit diagram of the present invention
  • FIG. 2 is a circuit diagram of a voltage stabilizing circuit of the present invention.
  • An embodiment of the present invention relates to a photoelectric switch for an elevator.
  • an infrared transmitting and receiving integrated circuit 1 is sequentially connected, and an output end of the infrared transmitting and receiving integrated circuit 1 is connected to a light emitting diode through a transistor 2 .
  • the base of the transistor 2 is also connected to an overcurrent short circuit protection integrated circuit 3.
  • the overcurrent short circuit protection integrated circuit is realized by a BTS4140 chip, wherein the I terminal is connected to the base of the triode through a resistor, and is connected to the power source through a resistor, the SOURCE terminal is connected to the power source, and the DRAIN terminal is connected to the resistor and the diode in parallel with each other. Connected to the ground.
  • the overcurrent short circuit protection integrated circuit can completely avoid the damage of the output interface caused by the load abnormality due to excessive load or external interference signal.
  • the infrared transmitting and receiving integrated circuit is realized by an IS471F chip, wherein one port is connected in series with one resistor and then connected in series with two parallel reversed diodes, and the two ports are directly grounded, and the three ports are connected to the base of the triode.
  • the base and the 3 port are directly connected to the power supply through a resistor, and the 4 port is directly connected to the power supply and grounded through the capacitor.
  • the pulse-modulated infrared transmitting tube and the receiving tube are used to modulate the transmitting and receiving signal processing lines integrated in the receiving tube, and the transmitting and receiving are synchronized, so that the line infrared transmitting and receiving line has simple performance, strong resistance to dry lines and infrared interference.
  • the power terminal of the infrared transmitting and receiving integrated circuit 1 is connected to a voltage stabilizing circuit.
  • the voltage stabilizing circuit is a three-stage series voltage stabilizing circuit, wherein the first-stage voltage stabilizing circuit 21 is composed of a resistor and a triode; the second-stage voltage stabilizing circuit 22 is composed of a resistor, two diodes and a The triode is composed of; the third-pole voltage stabilizing line 23 is composed of two resistors, a diode and a triode.
  • An output filter capacitor is connected in parallel with the output end of the voltage stabilizing circuit, and the output filter capacitor can effectively filter out the high frequency signal.
  • An input filter capacitor is connected in parallel with the input end of the voltage regulator circuit, and the input filter capacitor can effectively filter out the high frequency signal.
  • a transient voltage suppression diode is also connected in parallel with the input terminal of the voltage regulator circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electronic Switches (AREA)

Abstract

公开了一种电梯用光电开关，包括依次相连的红外发射接收集成电路（1），所述红外发射接收集成电路（1）的输出端通过三极管（2）与发光二极管相连，所述三极管（2）的基极还与过流短路保护集成电路（3）相连。所述电梯用光电开关具有负载过流短路保护和消除外部干扰信号的功能。

Description

说 明 书 一种电梯用光电开关 技术领域
本实用新型涉及一种光电开关， 特别是涉及一种电梯用光电开关。
背景技术
随着社会经济的不断发展， 电梯己经得到越来越普及的应用。 目前电梯普遍采用变频 控制技术， 而电梯的曳引电机功率通常会在 15KW以上， 大功率的变频技术必然会对电网 产生较大的干扰， 干扰信号会直接影响作为平层感应器的光电开关， 会导致负载异常或动 作异常， 严重的会导致光电幵关不能正确反映电梯的平层位置， 甚至导致电梯关人或冲顶 等安全事故。 因此， 作为电梯平层感应器的光电开关的可靠性就显得尤其重要。
本实用新型所要解决的技术问题是提供一种电梯用光电开关， 具有过流短路保护和消 除外部干扰信号等功能。
本实用新型解决其技术问题所采用的技术方案是： 提供一种电梯用光电开关， 包括依 次相连的红外发射接收集成电路， 所述红外发射接收集成电路的输出端通过三极管与发光 二极管相连， 所述三极管的基极还与过流短路保护集成电路相连。
所述过流短路保护集成电路通过 BTS4140芯片实现。
所述红外发射接收集成电路通过 IS471F芯片实现。
所述红外发射接收集成电路的电源端与稳压电路相连。
所述稳压电路为三级串联稳压线路。
所述稳压电路输出端并联有输出滤波电容。
所述稳压电路输入端并联有输入滤波电容。
所述稳压电路输入端还并联有瞬变电压抑制二极管。
所述稳压电路输入端串联有限流电阻和用于防止电压反接的二极管。
有益效果
由于采用了上述的技术方案， 本实用新型与现有技术相比， 具有以下的优点和积极效 果： 本实用新型增加了过流和短路保护集成电路， 能够完全避免由于负载过大或外部干扰 信号使负载异常导致的输出接口损坏， 并通过稳压电路来使得整个电路始终处于稳压状 态。
附图说明
图 1是本实用新型的电路图；
图 2是本实用新型中稳压电路的电路图。
下面结合具体实施例， 进一步阐述本实用新型。 应理解， 这些实施例仅用于说明本实 用新型而不用于限制本实用新型的范围。 此外应理解， 在阅读了本实用新型讲授的内容之 后， 本领域技术人员可以对本实用新型作各种改动或修改， 这些等价形式同样落于本申请 所附权利要求书所限定的范围。
本实用新型的实施方式涉及一种电梯用光电开关， 如图 1所示， 包括依次相连的红外 发射接收集成电路 1， 所述红外发射接收集成电路 1的输出端通过三极管 2与发光二极管 相连， 所述三极管 2的基极还与过流短路保护集成电路 3相连。
所述过流短路保护集成电路通过 BTS4140芯片实现， 其中， I 端通过电阻与三极管的 基极相连， 并通过一个电阻与电源相连， SOURCE端与电源相连， DRAIN端通过相互并联 的电阻和二极管与地相连。 该过流短路保护集成电路能完全避免由于负载过大或外部干扰 信号使负载异常导致的输出接口损坏。
所述红外发射接收集成电路通过 IS471F芯片实现， 其中， 1端口串联一个电阻后再与 两个并联的反接二极管串联后与电源相连， 2端口直接接地， 3端口与三极管的基极相连, 在基极与 3端口直接通过一个电阻接电源， 4端口直接接电源， 并通过电容接地。 采用脉 冲式调制红外发射管和接收管调制发射接收信号处理线路集成在接收管内,发射与接收同 步， 使得线路红外发射接收线路性能简单， 抗干线路和红外扰能力强。
所述红外发射接收集成电路 1的电源端与稳压电路相连。 如图 2所示， 该稳压电路为三 级串联稳压线路， 其中第一级稳压线路 21由一个电阻和一个三极管组成； 第二级稳压线路 22由一个电阻、 两个二极管和一个三极管组成； 第三极稳压线路 23由两个电阻、一个二极 管和一个三极管组成。 所述稳压电路输出端并联有输出滤波电容， 该输出滤波电容能够有 效滤除高频信号。 稳压电路输入端并联有输入滤波电容， 该输入滤波电容能够有效滤除高 频信号。 稳压电路输入端还并联有瞬变电压抑制二极管， 当输入瞬间高能量冲击时， 它能 以极高的速度 （纳秒级） 使其阻抗骤然降低， 同时吸收一个大电流， 将其两端间的电压箝 位在一个预定的数值上， 从而确保后面的电路元件免受瞬态高能量的冲击而损坏。 所述稳 压电路输入端串联有限流电阻和用于防止电压反接的二极管。

Claims

权 利 要 求 书
1. 一种电梯用光电开关， 包括依次相连的红外发射接收集成电路 （1 )， 所述红外发射接 收集成电路 （1 ) 的输出端通过三极管（2) 与发光二极管相连， 其特征在于， 所述三 极管 （2) 的基极还与过流短路保护集成电路 （3 ) 相连。
2. 根据权利要求 1所述的电梯用光电开关，其特征在于，所述过流短路保护集成电路（3) 通过 BTS4140芯片实现。
3. 根据权利要求 1所述的电梯用光电开关，其特征在于，所述红外发射接收集成电路（3) 通过 IS471F芯片实现。
4. 根据权利要求 1所述的电梯用光电幵关，其特征在于，所述红外发射接收集成电路（3) 的电源端与稳压电路相连。
5. 根据权利要求 4所述的电梯用光电开关， 其特征在于， 所述稳压电路为三级串联稳压 线路。
6. 根据权利要求 4所述的电梯用光电开关, 其特征在于， 所述稳压电路输出端并联有输 出滤波电容。
7. 根据权利要求 4所述的电梯用光电开关， 其特征在于， 所述稳压电路输入端并联有输 入滤波电容。
8. 根据权利要求 4所述的电梯用光电开关， 其特征在于， 所述稳压电路输入端还并联有 瞬变电压抑制二极管。
9. 根据权利要求 4所述的电梯用光电开关， 其特征在于， 所述稳压电路输入端串联有限 流电阻和用于防止电压反接的二极管。
PCT/CN2012/001543 2011-12-23 2012-11-13 一种电梯用光电开关 WO2013091278A1 (zh)

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Cited By (1)

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CN110386522A (zh) * 2018-04-17 2019-10-29 三菱电机上海机电电梯有限公司 光电式限位开关及电梯系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202518896U (zh) * 2011-12-23 2012-11-07 宁波荣鹰电子有限公司 一种电梯用光电开关
US20230013786A1 (en) * 2021-07-13 2023-01-19 Changxin Memory Technologies, Inc. Method for manufacturing semiconductor structure, semiconductor structure, and memory

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Publication number Priority date Publication date Assignee Title
CN1613738A (zh) * 2003-11-07 2005-05-11 株式会社日立制作所 电梯位置检测装置
CN101720148A (zh) * 2009-07-21 2010-06-02 海洋王照明科技股份有限公司 一种led驱动电路及led装置
JP2010168159A (ja) * 2009-01-22 2010-08-05 Toshiba Elevator Co Ltd エレベータ装置
CN201952076U (zh) * 2011-01-04 2011-08-31 苏州沃尔思电子有限公司 光电开关电路
CN202518896U (zh) * 2011-12-23 2012-11-07 宁波荣鹰电子有限公司 一种电梯用光电开关

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1613738A (zh) * 2003-11-07 2005-05-11 株式会社日立制作所 电梯位置检测装置
JP2010168159A (ja) * 2009-01-22 2010-08-05 Toshiba Elevator Co Ltd エレベータ装置
CN101720148A (zh) * 2009-07-21 2010-06-02 海洋王照明科技股份有限公司 一种led驱动电路及led装置
CN201952076U (zh) * 2011-01-04 2011-08-31 苏州沃尔思电子有限公司 光电开关电路
CN202518896U (zh) * 2011-12-23 2012-11-07 宁波荣鹰电子有限公司 一种电梯用光电开关

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110386522A (zh) * 2018-04-17 2019-10-29 三菱电机上海机电电梯有限公司 光电式限位开关及电梯系统

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CN202518896U (zh) 2012-11-07

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