CN101761284B - Controller of rail transportation safety door - Google Patents
Controller of rail transportation safety door Download PDFInfo
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- CN101761284B CN101761284B CN2008102371937A CN200810237193A CN101761284B CN 101761284 B CN101761284 B CN 101761284B CN 2008102371937 A CN2008102371937 A CN 2008102371937A CN 200810237193 A CN200810237193 A CN 200810237193A CN 101761284 B CN101761284 B CN 101761284B
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Abstract
The invention relates to a controller of a rail transportation safety door, wherein the output ends of PWMA and PWMB of CPU of a central controller used for regulating input of signals are connected with the input end of a DC/AC converter; the three phases of a direct current brushless electric machine A are respectively connected with three groups of transistors of the DC/AC converter; the output ends of the direct current brushless electric machine A are respectively connected with the rail transportation safety door and a position sensor A and a position sensor B; the input and output signals of the rail transportation safety door are connected with the input end of the central controller; a platform manual operation device is connected with the input end of the central controller; the external power input provides direct current power supply for the controller through the AC/DC converter; and a communication unit is connected with the central controller. The output power in the invention has convenient regulation, can ensure accurate starting and positioning of two rail transportation safety doors; the opening and closing of the rail transportation safety door are easy to control; and the rail transportation safety door has small size and beautiful and solid appearance.
Description
Technical field
The invention belongs to automation control area, particularly a kind of controller of rail transit safety door.
Background technology
The formation of the rail transit safety door of control track traffic at present mainly contains: brushless direct current motor, controller, gear, the rail transit safety door that sensor etc. constitute; By the single phase ac servomotor, two controllers, two gears, the rail transit safety door that sensor etc. constitute; Will be by three-phase alternating-current motor or three phase variable frequency motor, controller, reducing gear, the rail transit safety door that sensor etc. constitute; Single-phase or the three-phase serial connection electromagnetic braking motor that also has development in recent years to get up, controller, gear, the rail transit safety door that sensor etc. constitute; In use all there is certain shortcoming in the method for controlling the rail transit safety door switch of these track traffics: 1. brush dc motor and control are arranged; Owing to reasons such as commutator commutation sparks, the contact resistance of brush and commutator is very big, and the motor overall electrical resistance is bigger; Heating easily; Maintenance cost is high, and reliability is low, can not be used for the control of rail transit safety door; 2. control two gears with two controllers, system complex, maintenance cost is high, and reliability is low; 3. three-phase alternating-current motor; Controller, the rail transit safety door that sensor etc. constitute is though there is detent torque little; The advantage that starting current is big; But system effectiveness is low during low cruise, can not satisfy the flexibility startup of rail transit safety door and close the particularly flexibility startup of two rail transit safety doors whiles and the requirement of closing; 4. with the motor single-phase or electromagnetic braking of three-phase serial connection, its volume is big, is not suitable for being installed in the small space in the rail transit safety door body.
Summary of the invention
The controller that the purpose of this invention is to provide a kind of rail transit safety door; Its power output is easy to adjust, can guarantee startup, the accurate positioning of two rail transit safety doors, and the open and close of rail transit safety door are easy to control; And volume is little, and is aesthetic in appearance firm.
Realize that technical scheme of the present invention is:
The controller of rail transit safety door; Comprise sensor, central controller and motor; The PWMA output of the central controller of conditioning signal input is connected with a DC/AC converter input; The three-phase of the dc brushless motor A of band reducer is connected with three group transistors of a DC/AC converter respectively, and the output of dc brushless motor A connects rail transit safety door and position sensor A respectively, and the input and output signal of rail transit safety door is connected with the input of central controller; The PWMB output of the central controller of conditioning signal input is connected with another DC/AC converter input; The three-phase of the dc brushless motor B of band reducer is connected with three group transistors of a DC/AC converter respectively; The output of dc brushless motor B connects rail transit safety door and position sensor B respectively, and the platform hand-operating device is connected with the input of central controller through being electrically connected; The external power source input is that controller provides dc source through the AC/DC converter; The dc power anode and the dash current holding circuit (holding circuit is made up of diode and thermistor) of afterwards connecting between the level power supply; The positive and negative level of AC/DC converter is connected with the input of two DC/AC converters respectively through after holding circuit and the Filtering Processing, and communication unit (communication unit is a kind of protocol processes parts) is connected through the CAN communication interface with central controller.
Beneficial effect of the present invention is following:
One, adopt a central controller to control two rail transit safety doors simultaneously, said two doors start simultaneously, close simultaneously, and therefore rail transit safety door accurate positioning, the advantage that is easy to control are arranged.
The torque of the DC Brushless Motor output of two, adopting, rotating speed are only relevant with control voltage, guarantee moment, the rotating speed of the DC Brushless Motor output of control rail transit safety door.
Three, adopted direct current brushless permanent magnet electromotor, because the permanent-magnet material magnetic energy product on the p-m rotor is big, under same power output situation, volume is less, and institute's wasted work rate is also less.The rotor of DC Brushless Motor is high-performance neodymium-iron-boron magnet, does not have teeth groove and do not have mount structure, can produce super large moment and ultra level and smooth motion, the non-moment ripple.
Four, the direct current brushless permanent magnet electromotor of this rail transit safety door employing, its rotor magnetic pole is the motor of hidden pole type, the rotor ratio is easier to make, and therefore advantage of low manufacturing cost is arranged.
The motor of the band reducer that five, adopts, volume is little, and is aesthetic in appearance firm, is fit to door body structure fully.
The present invention is simple in structure, and volume is little, and power output is easy to adjustment, and is easy to adjust, can satisfy the requirement of automation precision control.
Description of drawings
Fig. 1 is a block diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
Below in conjunction with accompanying drawing the utility model is described further.
The specific embodiment
Referring to Fig. 1 and Fig. 2; The PWMA output of the central controller of conditioning signal input is connected with a DC/AC converter input; The three-phase of the dc brushless motor A of band reducer is connected with three group transistors of a DC/AC converter respectively; The output of dc brushless motor A connects rail transit safety door and position sensor A respectively, and the input and output signal of rail transit safety door is connected with the input of central controller; The PWMB output of the central controller of conditioning signal input is connected with another DC/AC converter input; The three-phase of the dc brushless motor B of band reducer is connected with three group transistors of a DC/AC converter respectively; The output of dc brushless motor B connects rail transit safety door and position sensor B respectively, and the platform hand-operating device is connected with the input of central controller through being electrically connected.Dc brushless motor instructs forward or reverse according to central controller; The required speed moment of dc brushless motor output of band reducing gear; The position sensor that is connected on the dc brushless motor is given central controller with the outgoing position signal feedback of rail transit safety door, and central controller is regulated the opening and closing of control rail transit safety door.The external power source input is that controller provides dc source through the AC/DC converter; The dc power anode and the dash current holding circuit (holding circuit is made up of diode and thermistor) of afterwards connecting between the level power supply; The positive and negative level of AC/DC converter is connected with the input of two DC/AC converters respectively through after holding circuit and the Filtering Processing, and communication unit (communication unit is a kind of protocol processes parts) is connected through the CAN communication interface with central controller.
The present invention has adopted DC Brushless Motor, and its switching-over detecting element adopts Hall element, and DC Brushless Motor has adopted the non-salient pole permanent magnet rotor, and the rotor magnetic pole logarithm is 4P or 6P.
During work; The push button; The signal input is sent into central controller after photoelectricity isolation and logical transition processing, the position sensor feedback output signal and the input signal that are connected simultaneously on the dc brushless motor are relatively seen PWMA or PWMB (pulse width modulation) control signal off; Drive DC/AC transverter A or B (transverter A control motor A; Transverter B control motor B) the power transistor switch frequency and the order of commutation, the rotating speed and the moment of control DC Brushless Motor, required moment and the speed of reducer output that DC Brushless Motor 5 carries.
Dc brushless motor needs three-phase control power supply, so control section is according to the frequency of tool demand conversion input power supply.Power unit adopts alternating current input (220V/380V), changes into direct current through AC/DC converter (converter) earlier; Changing the DA/AC converter of again DC voltage being made up of transistor before the motor coil (inverter) again over to is transformed into three-phase voltage and comes drive motors.Generally (Q1～Q6) is divided into upper arm (Q1, Q3, Q5) and is connected motor with underarm (Q2, Q4, Q6) as the flow through on-off switch of motor coil of control DC/AC converter (inverter) by 6 power transistors.The order of the PWM that central controller provides (pulse width modulation) signal deciding power transistor switch frequency and transverter (inverter) commutation.Speed can be stable at setting value and can not change too big speed controlling when load change the time when dc brushless motor is used; Motor internal setting can be detected the Hall element (hall-sensor) in magnetic field; As the speed closed loop feedback, simultaneously also as the foundation of phase sequence control.Be used as governing speed and as accurate positioning control, sensor output rail transit safety door put in place control signal and obstacle detection signal.
The rotation of direct current generator; At first central controller is according to the present position of the detected rotor of motor internal Hall element; The order of opening power transistor in (or closing) transverter (inverter) according to the stator winding decision then; Make the electric current motor coil of flowing through in regular turn produce forward (or reverse) rotating excitation field, and interact, so just can make motor up time/inverse time rotation with the magnet of rotor.When rotor turn to the motor internal Hall element induce another the group signal position the time; Control part is opened next group power transistor again; So circulation, motor can be rotated further up to control section according to same direction needs rotor to stop then to close power transistor (or only opening the underarm power transistor); In like manner, oppositely then the power transistor opening sequence is opposite to need rotor.
After motor rotates; The speed that central controller CPU can be again changes according to input signal and motor internal Hall element signal compare (or by software computing) decide again by next group (Q1, Q4 or Q1, Q6 or Q3, Q6 or ...) switch conduction, and ON time length.Then switch conduction is long inadequately for speed, and the excessive then switch conduction of speed is short, and this partially-working is just accomplished by PWMA, PWMB.PWMA, PWMB are the fast or slow modes of decision motor speed, and central controller CPU produces accurate PWMA, PWMB reaches the precisely purpose of speed controlling.Input signal be connected the position sensor feedback output signal deciding CPU control output PWMA on the dc brushless motor, the opening sequence of PWMB, thereby the rotating of control motor and stopping.
The operation of the dc brushless motor of band reducer drives the rail transit safety door operation through driving mechanism.Central controller is accurately controlled the operation of rail transit safety door door body in real time through the signal of dc brushless motor and position sensor, and the flexibility of realization rail transit safety door is closed with flexibility and closed.
Communication unit is connected through the CAN communication interface with central controller.Through communication unit, realize that rail transit safety door is kept watch on, the control function, fault alarm, data acquisition and management function; And the test of rail transit safety door system, self diagnosis and remote maintenance functions; Realize through read rail transit safety door speed of service curve, series of fortified passes gate delay time and the isoparametric function of series of fortified passes door number of times; The above-mentioned parameter of rail transit safety door is reset in realization, so that the function of data such as the switching speed of adjustment dodge gate, time.
System's operation has automatically and manual two kinds of operating modes: at automatic operating, the operation of rail transit safety door is by communication unit or data signal (switching value) control, real-time tracking position signalling; In manual operating mode, the operation of rail transit safety door is by platform operating means input signal, and control procedure is with the above.
The said central controller of present embodiment adopts the central controller of XC164 model.
All central controllers with can control module, a plurality of timer, 2 step comparators all can be used as central controller according to the invention.
Claims (5)
1. the controller of a rail transit safety door; Comprise sensor, central controller CPU and motor; It is characterized in that: the PWMA output of the central controller CPU of conditioning signal input is connected with a DC/AC converter input; The three-phase of the dc brushless motor A of band reducer is connected with three group transistors of a DC/AC converter respectively; The output of dc brushless motor A connects rail transit safety door and position sensor A respectively, and the input and output signal of rail transit safety door is connected with the input of central controller CPU; The PWMB output of the central controller CPU of conditioning signal input is connected with another DC/AC converter input; The three-phase of the dc brushless motor B of band reducer is connected with three group transistors of a DC/AC converter respectively; The output of dc brushless motor B connects rail transit safety door and position sensor B respectively, and the platform hand-operating device is connected with the input of central controller CPU through being electrically connected; The external power source input is that controller provides dc source through the AC/DC converter; The dc power anode and the dash current holding circuit of afterwards connecting between the level power supply; The positive and negative level of AC/DC converter is connected with the input of two DC/AC converters respectively through after holding circuit and the Filtering Processing, and communication unit is connected through the CAN communication interface with central controller CPU.
2. the controller of rail transit safety door according to claim 1, it is characterized in that: said AC/DC converter is that controller provides dc source, the dash current holding circuit of connecting between dc power anode and the back level power supply.
3. the controller of rail transit safety door according to claim 1 is characterized in that: described dc brushless motor A and dc brushless motor B all adopt Hall element to detect as the commutation of motor.
4. the controller of rail transit safety door according to claim 1 is characterized in that: what described position sensor A and position sensor B all adopted is the Hall element feedback.
5. the controller of rail transit safety door according to claim 1, it is characterized in that: described dc brushless motor A and dc brushless motor B are the non-salient pole permanent magnet rotor, and the rotor magnetic pole logarithm is 4P or 6P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102371937A CN101761284B (en) | 2008-12-22 | 2008-12-22 | Controller of rail transportation safety door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102371937A CN101761284B (en) | 2008-12-22 | 2008-12-22 | Controller of rail transportation safety door |
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| Publication Number | Publication Date |
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| CN101761284A CN101761284A (en) | 2010-06-30 |
| CN101761284B true CN101761284B (en) | 2012-12-19 |
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| CN2008102371937A Active CN101761284B (en) | 2008-12-22 | 2008-12-22 | Controller of rail transportation safety door |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967931A (en) * | 2010-09-19 | 2011-02-09 | 南京康尼电子科技有限公司 | Drive control device and control method used for urban rail station half-height safety door |
| CN101994451A (en) * | 2010-10-28 | 2011-03-30 | 爱威机电(南京)有限公司 | Two-way control method for safe opening and closing of BRT (bus rapid transit) platform gate |
| CN103395420B (en) * | 2013-07-26 | 2016-08-17 | 宁波中车时代传感技术有限公司 | The screen door control system controlled based on double-core |
| CN103643851B (en) * | 2013-11-30 | 2016-04-20 | 四川久远新方向智能科技有限公司 | Screen door in rail transit control system door control unit |
| CN105089407B (en) * | 2014-05-23 | 2017-04-05 | 株洲南车时代电气股份有限公司 | The controlling device for doors of compatible shield door and safety door, system and method |
| CN105652687B (en) * | 2015-12-07 | 2018-10-12 | 重庆川仪自动化股份有限公司 | A kind of control method and device for rail safety door or shield door simulation test |
| CN109144038B (en) * | 2018-10-29 | 2020-12-22 | 南京康尼电子科技有限公司 | Gate controller diagnosis system and method for rail transit |
| EP4067614A4 (en) * | 2019-11-27 | 2023-04-19 | Mitsui Kinzoku ACT Corporation | Drive device for sliding door |
| CN114771580B (en) * | 2022-06-20 | 2022-10-28 | 深圳市永达电子信息股份有限公司 | High-speed rail safety door moving and positioning device and moving and positioning method |
| CN114906174A (en) * | 2022-06-23 | 2022-08-16 | 李林钊 | Safety door system of urban rail transit platform |
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| US5982125A (en) * | 1998-11-04 | 1999-11-09 | The Stanley Works | Automatic door test apparatus |
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| CN101105096A (en) * | 2007-08-23 | 2008-01-16 | 上海交通大学 | Platform shield door intelligent control system |
| CN201062461Y (en) * | 2007-06-11 | 2008-05-21 | 铁道科学研究院通信信号研究所 | Wireless station screening door vehicle-ground interlocking control system |
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| EP0162799A1 (en) * | 1984-05-17 | 1985-11-27 | The Stanley Works | Automatic door control system |
| US5982125A (en) * | 1998-11-04 | 1999-11-09 | The Stanley Works | Automatic door test apparatus |
| CN2492661Y (en) * | 2001-08-04 | 2002-05-22 | 傅海山 | Automatic door unit with brushless motor |
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| CN101761284A (en) | 2010-06-30 |
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