CN104790798A - Metro shielding door switch preventing pinching - Google Patents
Metro shielding door switch preventing pinching Download PDFInfo
- Publication number
- CN104790798A CN104790798A CN201510161212.2A CN201510161212A CN104790798A CN 104790798 A CN104790798 A CN 104790798A CN 201510161212 A CN201510161212 A CN 201510161212A CN 104790798 A CN104790798 A CN 104790798A
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- flexible
- shield door
- subway shield
- switch
- elastic hose
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention provides a metro shielding door switch preventing pinching, and belongs to technical field of switches. The metro shielding door switch preventing pinching comprises a flexible electric conductor (1), a flexible and insulated elastic net and an elastic hose (5). The elastic hose (5) comprises two layers, a flexible electric conduction net (4) serves as the inner layer, and the outer layer is a flexible and insulated layer. The flexible electric conductor (1) is in a cylinder line shape and is arranged in the axis of the elastic hose (5), and the flexible and insulated elastic net is formed by circling two insulated elastic lines into big meshes in the reverse direction and along the periphery of the flexible electric conductor, and arranged between the flexible electric conductor and the elastic hose (5). The metro shielding door switch preventing pinching can detect extrusion signals in any directions and prevent a metro shielding door from pinching passengers.
Description
Technical field
The present invention relates to a kind of subway shield door switch of preventing damage, belong to switching technique field.
Background technology
In prior art, subway shield door does not arrange the structure of preventing damage, people in order in a hurry, and when getting on the bus hastily, often crushed by the subway shield door of just closing, and switch of the prior art only can detect the pressing of a specific direction, as the pressing signal perpendicular to overcoat top, in the application of subway shield door preventing damage, for the compression signal of some direction-changeable can be detected, have to select the servomechanism of multiple switch or complexity to solve the problem crushed.
Summary of the invention
For overcoming the shortcoming existed in prior art, goal of the invention of the present invention is to provide a kind of subway shield door switch of preventing damage, and it can detect the compression signal of any direction, prevents subway door shield door from crushing passenger.
For realizing described goal of the invention, the invention provides a kind of subway shield door switch of preventing damage, subway shield door comprises N group door, often organize subway shield door and comprise two fan doors, the adjacent edge of two fan doors is provided with the subway shield door switch of preventing damage, the subway shield door switch of preventing damage comprises: flexible electrical conductors 1, flexible insulation elastic network(s) and elastic hose 5, wherein, elastic hose 5 comprises two-layer, and internal layer is compliant conductive net 4, and skin is flexible insulating layer; Flexible electrical conductors 1 is that cylinder is linear and be arranged on the axle center of elastic hose 5, and flexible insulation elastic network(s) to be spiraled in opposite direction along the periphery of flexible electrical conductors by two bar insulation elasticas and forms macrolattice, and is arranged between flexible electrical conductors and elastic hose 5.。
Compared with prior art, the subway shield door switch of preventing damage provided by the invention can detect the compression signal of any direction, and subway shield door can be avoided to crush passenger.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of preventing damage subway shield door switch provided by the invention;
Fig. 2 is the circuit diagram of preventing damage subway shield accelerator control system provided by the invention;
Fig. 3 is the circuit diagram of preventing damage subway shield door gating circuit provided by the invention;
Fig. 4 is the telecommunication circuit figure of centre panel provided by the invention and gating circuit;
Fig. 5 is the voltage sequential chart in preventing damage subway shield accelerator control system provided by the invention on power line;
Fig. 6 is the input voltage sequential chart of local detecting unit in preventing damage subway shield accelerator control system provided by the invention.
Detailed description of the invention
The present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the schematic perspective view of preventing damage subway shield door switch provided by the invention.As shown in Figure 1, preventing damage subway shield door switch provided by the invention comprises: flexible electrical conductors 1, flexible insulation elastic network(s) and elastic hose 5, and wherein, elastic hose 5 comprises two-layer, and internal layer is compliant conductive net 4, and skin is flexible and has flexible insulating layer; Flexible electrical conductors 1 is that cylinder is linear and be arranged on the axle center of elastic hose 5, flexible insulation elastic network(s) to be spiraled in opposite direction along the periphery of flexible electrical conductors by two bar insulation elasticas and forms large mesh, and be arranged between flexible electrical conductors and elastic hose 5, dielectric resilience line 2 and 3 for cross section be circular dielectric resilience line.Elastic hose 5 is cylindrical shape.Described compliant conductive net 4 can for being made up of the cylindrical shape net of intensive little mesh many flexible conductive wires, to make when elastic hose 5 is subject to external force extruding, the large mesh that the compliant conductive net 4 of its internal layer passes flexible insulation elastic network(s) contacts with flexible electrical conductors 4.Flexible electrical conductors 1 is electrically connected with the first holding wire, and compliant conductive net 4 is electrically connected with secondary signal line.Preferably, in the space between flexible electrical conductors 1 and elastic hose 5, be filled with inert gas, so both prevent flexible electrical conductors 1 and compliant conductive net 4 oxidation by air, contribute to again, after external force is eliminated, elastic hose 5 being returned to normal.
Preventing damage subway shield door switch general principle is: when external force causes the distortion of the either direction of elastic hose 5, all the large mesh making compliant conductive net 4 through flexible insulation elastic network(s) is contacted with the flexible electrical conductors 1 in the axle center being arranged at elastic hose 5, thus make the first holding wire and the electrical connection of secondary signal line.When external force is eliminated, elastic hose returns to normal, and the conductive mesh 4 of elastic hose inwall is separated with flexible electrical conductors 1.
Preventing damage subway shield door switch key point utilizes two flexible insulation elasticas 2 and 3 to spiral in opposite direction along the periphery of the first fexible conductor and forms large mesh, and be arranged between fexible conductor 1 and elastic hose 5, so, not only increase the insulating properties between fexible conductor and conductive mesh, and when external force is removed, elastic hose 5 is returned to normal more rapidly, thus the sensitivity of switch is improved.
Usual subway shield door comprises N group, N be greater than or equal to 2 integer.Often organize subway shield door comprise first shield door being positioned at left side of two fan symmetries and be positioned at the secondary shielding door on right side, in order to control the opening and closing of the first shield door and secondary shielding door, the barrier shield on the left side of the first shield door arranges the first right limit Hall switch KR1 and the first left limit Hall switch KL1, at the left end of the first shield door, the first magnet steel is set, when the first shield door is closed, magnet steel is aimed at the first right limit Hall switch KR1, and the first right limit Hall switch KR1 closes; When the first shield door is opened, magnet steel is aimed at the first left limit Hall switch KL1, and the first left limit Hall switch KL1 closes.The barrier shield on the right of secondary shielding door arranges the second right limit Hall switch KR2 and the second left limit Hall switch KL2, the right-hand member of secondary shielding door is provided with the second magnet steel, when secondary shielding door is closed, second magnet steel is aimed at the second left limit Hall switch KL2, and the second left limit Hall switch KL2 closes; When secondary shielding door is opened, the second magnet steel is aimed at the second right limit Hall switch KR2, and the second right limit Hall switch KR2 closes.
Crush to prevent passenger, one section of preventing damage subway shield door switch identical with shield door height is embedded at the right hand edge paste List of the first shield door or small part, preventing damage subway shield door switch is by the left hand edge paste List of secondary shielding door or the small part one section preventing damage subway shield door switch identical with shield door height, so, when the first shield door and secondary shielding door are closed, if at this moment there is passenger to be sitting at therebetween, and passenger extrudes the periphery be arranged on when the switch on the first shield door and secondary shielding door, the switch be arranged on the first shield door is all connected with the upper switch being arranged on secondary shielding door, the signal of this connection can be detected by logic circuit, this content describes in gating circuit.
Fig. 2 is preventing damage subway shield accelerator control system provided by the invention.The control system of subway shield gate control generally include a centre panel and the first gating circuit, the second gating circuit ... with N gating circuit, wherein, centre panel comprises central controller MCU
c, the first switch driver and central testing circuit, the first switch driver comprises transistor TR1, resistance R1 and diode D1, and the base stage of transistor TR1 is connected to central controller MCU through resistance R1
c, grounded emitter, colelctor electrode connects the positive pole of diode D1.The negative pole of diode D1 meets power supply+12V, and the two ends of diode D1 and the line bag of relay J 1 are in parallel.The fixed end of relay J 1 connects direct voltage source u
z1, constant open contact connects the power supply providing end of supply lines 11, and the supply voltage of supply lines 11 is u
11.Central authorities' testing circuit comprises diode D4, resistance R7, resistance R8, operational amplifier OP2 and photoisolator PE3, and wherein, the negative pole of diode D4 is connected to the power supply providing end of supply lines 11, and the positive pole of diode D4 is connected to DC voltage u through resistance R8
z2, the node that diode D4 is connected with resistance R8 is connected to the in-phase end of operational amplifier OP2, and the end of oppisite phase of operational amplifier OP2 is connected to reference voltage u through resistance R7
rF, the output of operational amplifier OP2 is connected to central controller MCU
can input/output terminal, or be connected to MCU through photoisolator PE3
can input/output terminal, specifically, the output of operational amplifier OP2 is connected to the negative pole of the light emitting diode of photoisolator PE3, the positive pole of light emitting diode is connected to power supply+12V through resistance R14, the grounded emitter of the phototriode of photoisolator PE3, colelctor electrode is connected to power supply+5V by resistance R15, is connected to MCU simultaneously
can input/output terminal.
The structure of N number of gating circuit is identical, is described for the first gating circuit composition graphs 3.
Fig. 3 is the circuit diagram of preventing damage subway shield door gating circuit provided by the invention.As shown in Figure 3, preventing damage subway shield door gating circuit provided by the invention comprises door controller (DCU
l), the control circuit of the control circuit of power supply for step-by-step motor circuit, power supply for step-by-step motor circuit, stepper motor, data transmission circuit and local testing circuit, wherein, power supply for step-by-step motor circuit comprises: diode D5, electric capacity C2 and relay J 2, the positive pole of diode D5 is connected to the power supply providing end of power line 11, negative pole is connected to the first end of electric capacity C2, be connected to the fixed end of relay J 2 line bag, the second end ground connection of electric capacity C2 simultaneously; The Chang Kaiduan of electrical equipment J2 line bag is connected to the power end of stepper motor driver.The control circuit of power supply for step-by-step motor circuit comprises transistor TR2, resistance R2 and diode D2, and wherein the base stage TR2 of transistor is connected to door controller (DCU through resistance R2
l) an input/output terminal, grounded emitter, colelctor electrode connects the positive pole of diode D2.The negative pole of diode D2 meets power supply+12V, and the two ends of diode D2 and the line bag of relay J 2 are in parallel.
The control circuit of stepper motor comprises photoisolator PE2 and stepper motor driver, and stepper motor driver is by photoisolator PE2 and DCU
lan input/output terminal be connected, more particularly, the negative pole of the light emitting diode of photoisolator PE2 connects an input/output terminal of controller, positive pole is connected to power supply+5V through resistance R11, the grounded emitter of the phototriode of photoisolator PE2, colelctor electrode is connected to power supply+12V by resistance R12, and the signal letter being simultaneously connected to stepping power supply driver enters end.Stepper motor driver is connected to stepper motor and rotates for Driving Stepping Motor.
Local testing circuit comprises: resistance R5 and R6, operational amplifier OP1 and the first optoisolator PE1, wherein, resistance R5 and R6 is power line u
11sample resistance, resistance is usually very large, and the node that they are in series is connected to the in-phase end of operational amplifier OP1, and the end of oppisite phase of OP1 connects reference voltage u
rF1, the output of OP1 is connected to DCU through photoisolator PE1
lan input/output terminal, more particularly, the output of operational amplifier OP1 is connected to the negative pole end of the light emitting diode of photoisolator PE1, the positive pole of light emitting diode is connected to power supply+12V through resistance R10, the grounded emitter of the phototriode of photoisolator PE1, colelctor electrode is connected to power supply+5V through resistance R9, is connected to DCU simultaneously
lan input/output terminal.The course of work of local testing circuit is: the voltage being added to the in-phase end of operational amplifier OP1 is
as this voltage u
1+be greater than reference voltage u
rF1time, operational amplifier OP1 exports high level, and the light emitting diode in PE1 does not work, and phototriode ends, to DCU
lan input/output terminal high level is provided; As this voltage u
1+be less than reference voltage u
rF1time, operational amplifier OP1 output low level, the LED operation in PE1, phototriode conducting, to DCU
lan input/output terminal low level is provided, so, the local testing circuit in gating circuit can detect the instruction that centre panel will send, and namely gating circuit can carry out data transmission with centre panel.So avoid and use communication module and communication protocol and carry out data transmission.
Data transmission circuit comprises the driver of relay J 3, resistance R9 and relay J 3, wherein, the fixed end of relay J 3 is connected to the power supply providing end of power line 11 by resistance R9, the Chang Kaiduan ground connection of relay J 3, the driver of relay J 3 comprises transistor TR3, resistance R3 and diode D3, wherein the base stage TR3 of transistor is connected to an input/output terminal of controller through resistance R3, and grounded emitter, colelctor electrode connects the positive pole of diode D3.The negative pole of diode D3 meets power supply+12V, and the two ends of diode D3 and the line bag of relay J 3 are in parallel.
Gating circuit provided by the invention also comprise the preventing damage be arranged on the first shield door subway shield door switch ANL, be arranged on to arrange on the barrier shield on the left side of the first shield door the first right limit Hall switch KR1 and the first left limit Hall switch KL1, the preventing damage subway shield door switch ANR be arranged on secondary shielding every, secondary shielding door the right barrier shield on the second right limit Hall switch KR2 and the second left limit Hall switch KL2 is set.One end of flexible switch ANL, Hall switch KR1, Hall switch KL1, flexible switch ANR, Hall switch KR2 and Hall switch KL2 is connected to+5V power supply respectively by a resistance, is connected respectively to DCM simultaneously
linput/output terminal, other end ground connection.During normality, when flexible switch ANL and flexible switch ANR and ground disconnect, to DCM
linput/output terminal high level is provided; When being squeezed, flexible switch ANL and flexible switch ANR is connected to ground, to DCM
linput/output terminal low level is provided.So, the information be squeezed as flexible switch ANL and flexible switch ANR is just detected, and extrudes information conversion in order to logic level simultaneously.Hall switch KR1, Hall switch KL1, Hall switch KR2 and Hall switch KL2 and magnet steel, not on time, disconnect, to DCM with ground
linput/output terminal high level is provided; Hall switch KR1, Hall switch KL1, Hall switch KR2 and Hall switch KL2 and magnet steel have on time, are connected to ground, to DCM
linput/output terminal low level is provided, so, DCM
lthe information of switch gate just can be detected, the information of Simultaneous Switching door is converted to logic level.
The data transmission procedure of centre panel and gating circuit is described in detail below in conjunction with Fig. 4.
Fig. 4 is the telecommunication circuit figure of centre panel provided by the invention and gating circuit.As shown in Figure 4, the second DC voltage u
z2for good and all be connected on the feeder ear of power line 11 through diode D4 and resistance R8, DC voltage u
z2be less than DC voltage u
z1.The process that centre panel sends data to gating circuit is: when centre panel needs to send " 0 " to gating circuit, MCU
cthere is provided electronegative potential to the base stage of transistor TR1, transistor TR1 ends, and the line bag of relay J 1 does not have electric current to pass through, and its constant open contact disconnects, D4 conducting, DC voltage u
z2be applied on power line 11 through resistance R8 and diode D4, now u
11=u
z2,
u
1+< u
rF1, operational amplifier OP1 output low level, LEDs ON in photoisolator PE1 and luminous, photoisolator PE1 light emitting transistor conducting and give DCU
la low level is provided.Door controller DCU in gating circuit
lafter this low level being detected, start the data receiving centre panel transmission.When centre panel needs to send " 1 " to gating circuit, MCU
cthere is provided high potential to the base stage of transistor TR1, transistor TR1 conducting, the line of relay J 1 is surrounded by electric current to be passed through, and its constant open contact is connected, and D4 ends, DC voltage u
z1be applied on power line 11, now u
11=u
z1,
u
1+> u
rF1, operational amplifier OP1 exports high level, in photoisolator PE1 light emitting diode cut-off, photoisolator PE1 light emitting transistor cut-off and give DCU
la high level is provided.As illustrated in Figures 5 and 6.
The process that gating circuit sends data to centre panel is:
When gating circuit needs to send digital " 0 " to centre panel, DCU
lthere is provided high potential to the base stage of transistor TR3, transistor TR3 conducting, the line of relay J 3 is surrounded by electric current to be passed through, and its constant open contact closes, the voltage of the in-phase end of operational amplifier OP2
u
2+< u
rF, the output output low level of operational amplifier OP2, LEDs ON in photoisolator PE3 and luminous, the light emitting transistor conducting of photoisolator PE3 and give MCU
ca low level is provided.When gating circuit needs to send numeral " 1 " to centre panel, DCU
lthere is provided electronegative potential to the base stage of transistor TR3, transistor TR3 ends, and the line bag of relay J 3 does not have electric current to pass through, and its constant open contact disconnects, the voltage u of the in-phase end of operational amplifier OP2
2+=u
z2, u
2+> u
rF, the output of operational amplifier OP2 exports high level, light emitting diode cut-off in photoisolator PE3, the light emitting transistor cut-off of photoisolator PE3 and give MCU
ca high level is provided.When gating circuit sends data to centre panel, be carry out when the constant open contact of relay J 1 disconnects.
Because the present invention is provided with central testing circuit and local testing circuit, transmission of digital signals can be carried out by power line, avoid and use traditional communication module to communicate with communication protocol, provide cost savings and resource.
The Frame of centre panel comprises 1 initial spy, 4 address bits, 6 data bits, 1 check bit and two stopping bits.Each gating circuit distributes an address, owing to only having 4 address bits, therefore can control at most 15 doors, and one of them address is as broadcast address, and as 1111 as broadcast address, other address is used for each distribution.The Frame of gating circuit comprises: 1 initial bits, 4 address bits, 6 data bits, 1 check bit and two stopping bits, wherein, 4 address bits only employ an address, namely distribute the address come.Above-mentioned frame structure is just illustrated, and owing to not needing to use existing communication module and communication protocol, so can use the arbitrary frame structure oneself needed, quantity and the content of the door that can control as required are selected.When centre panel needs to make each gating circuit perform identical instruction, broadcast address is used to send instruction, each gating circuit makes the location, location in the next address of distribution and Frame carry out AND operation by turn, result as AND operation is mated with the allocation address of oneself, and the data message in taking-up Frame is to perform corresponding order.When centre panel needs to send instruction to certain gating circuit separately, its address bit is the address of this gate electricity.When subway shield door opened by needs, centre panel is to the information transmitting the motor rotating forward making each gate circuit in broadcast address.After each gating circuit receives this broadcast message, motor is rotated forward, thus open subway shield door, when subway shield door closed by needs, centre panel is to the information transmitting the motor reversal making each gate circuit in broadcast address.After each gating circuit receives this broadcast message, make motor reversal, thus closedown subway shield door, when each door control unit receives the information of closing subway shield door, if after the signal that ANR and/or ANL receiving this cell gate connects simultaneously, motor is rotated forward, and driven by motor two subway shield door moves to both sides, makes two fan doors at least keep the distance of a safety.If now, ANR and/or ANL disconnects, and stepper motor is temporarily quit work, after waiting delay safety time, then continues to provide the signal that stepper motor is reversed.Control specifically controls: when subway shield door opened by needs, and centre panel utilizes its broadcast address to send the command signal of " unlatching ", after each gating circuit receives the command signal of " unlatching ", and door controller DCU
lthere is provided the pulse signal of rotating forward to stepper motor driver through photoelectrical coupler PE2, motor rotates forward, and it drives two fan subway shield doors to move to both sides, and at this moment Hall is opened KR1, KR2, KL1 and KL2 and all disconnected; When subway shield door is opened completely, namely the first shield door moves to the leftmost side, and secondary shielding door moves to the rightmost side.Magnet steel on first shield door is aimed at Hall switch KL1, and Hall switch KL1 connects, and the second magnet steel on secondary shielding door is aimed at Hall switch KR2, and Hall switch KR2 connects, DCU
lafter receiving this signal, provide signal to photoisolator PE2, stepper motor is quit work.When user needs to close subway shield door, centre panel utilizes its broadcast address to send out the command signal of pound " closedown ", after each gating circuit receives the command signal of " closedown ", and DCU
lthere is provided the pulse signal of reversion to stepper motor driver through photoelectrical coupler PE2, motor reversal, it drives two subway shield doors to move to centre, and namely the first shield door moves to the rightmost side when fully closed, and secondary shielding door moves to the leftmost side.The first magnet steel on first shield door is aimed at the first Hall switch KR1, and Hall switch KR1 connects, and the second magnet steel on secondary shielding door is aimed at Hall switch KL2, and Hall switch KL2 connects.DCU
lafter receiving these two signals, provide signal to photoisolator PE2, stepper motor is quit work.In the process that subway shield door is closed, if DCU
lafter receiving the signal of ANR and/or ANL connection, provide the pulse signal of rotating forward through photoelectrical coupler PE2 to stepper motor driver, motor rotates forward, it drives two subway shield doors to move to both sides, make two fan doors at least keep the distance of a safety, so, prevent subway shield goalkeeper people to crush.If now, ANR and/or ANL disconnects, and processor provides signal wouldn't to photoisolator PE2, stepper motor is temporarily quit work, after waiting delay safety time, then continues to provide the signal that stepper motor is reversed to close subway shield door.
The above is only done detailed description to embodiments of the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (1)
1. the subway shield door switch of a preventing damage, subway shield door comprises N group door, often organize subway shield door and comprise two fan doors, the adjacent edge of two fan doors is provided with the subway shield door switch of preventing damage, it is characterized in that, the subway shield door switch of preventing damage comprises: flexible electrical conductors (1), flexible insulation elastic network(s) and elastic hose (5), wherein, elastic hose (5) comprises two-layer, internal layer is compliant conductive net (4), and skin is flexible insulating layer; Flexible electrical conductors (1) for cylinder linear and be arranged on the axle center of elastic hose (5), flexible insulation elastic network(s) to be spiraled in opposite direction along the periphery of flexible electrical conductors by two bar insulation elasticas and forms macrolattice, and is arranged between flexible electrical conductors and elastic hose (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161212.2A CN104790798B (en) | 2015-04-07 | 2015-04-07 | Preventing damage subway shield door trip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161212.2A CN104790798B (en) | 2015-04-07 | 2015-04-07 | Preventing damage subway shield door trip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104790798A true CN104790798A (en) | 2015-07-22 |
| CN104790798B CN104790798B (en) | 2017-03-15 |
Family
ID=53555943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510161212.2A Active CN104790798B (en) | 2015-04-07 | 2015-04-07 | Preventing damage subway shield door trip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104790798B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895439A (en) * | 2015-05-18 | 2015-09-09 | 青岛立邦达电气有限公司 | Rail door control system |
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| US20020088283A1 (en) * | 2001-01-09 | 2002-07-11 | Autonetworks Technologies, Ltd. | Load sensor, pinch detection apparatus and load detection apparatus |
| US7479878B2 (en) * | 2004-07-28 | 2009-01-20 | Senstar-Stellar Corporation | Triboelectric, ranging, or dual use security sensor cable and method of manufacturing same |
| JP2008267812A (en) * | 2007-04-16 | 2008-11-06 | Matsushita Electric Ind Co Ltd | Cable-shape pressure-sensitive sensor |
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| Publication number | Publication date |
|---|---|
| CN104790798B (en) | 2017-03-15 |
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