CN212367590U - Device for automatically controlling on and off of lookout lamp band - Google Patents

Abstract

The utility model belongs to the technical field of subway lookout lamp area control, concretely relates to automatic control lookout lamp area lights out device. The device comprises a micro control unit, a door opening and closing detection module, a train position detection sensor and a lookout lamp belt control circuit, wherein the output end of the door opening and closing detection module is connected with the input end of the micro control unit and used for transmitting a door opening and closing signal to the micro control unit; the train position detection sensor is connected with the input end of the micro control unit and is used for transmitting a train position signal to the micro control unit; the micro control unit controls a signal line at the output end to control the connection and disconnection of the lookout lamp belt through a switch element so as to control the on and off of the lookout lamp belt; the device can realize that the lookout lamp area lights when the train enters the station, and the lookout lamp area automatically extinguishes after the train leaves the station. Can reduce the lamp area and light the time, solve and watch the lamp area and often light the influence to LED life, reduce lamp area fault rate.

Description

Device for automatically controlling on and off of lookout lamp band

Technical Field

The utility model belongs to the technical field of subway lookout lamp area control, concretely relates to automatic device that bright going out in control lookout lamp area.

Background

The subway platform door is a high-tech product integrating the subjects of building, machinery, materials, electronics, information and the like, and is used for a subway platform. The platform door separates the platform from the train operation area, and the synchronous opening and closing of the platform door and the train door are controlled by the control system, so that the safety of trains and passengers when entering and leaving the station is guaranteed. In order to ensure the normal operation of the train, a gap of about 130mm is reserved between the train and the platform door, and if passengers or other objects are clamped in the gap, the life of the passengers is endangered and the safe operation of the train is seriously influenced. Therefore, usually a lookout lamp strip is arranged on or near a stand column of an end door of a platform door, after the platform door and a train door are closed, a train driver (located at the position of a train head) observes whether a barrier exists or not through the lookout lamp strip located at the tail part of the train, if one or more sections or all the observed lamp strips are shielded, a passenger is clamped or foreign matters exist between the train and the platform door, and the driver can inform a platform door worker to check and rescue; if the lamp area that observes is clear complete, then think that there is not the obstacle between train and the platform door, can send out the car safely.

Because the LED has the characteristics of energy conservation, environmental protection, long service life, small size and the like, the observation lamp belts used by the existing platform door systems all adopt the LED as a light source, and the theoretical service life of the observation lamp belts reaches 5-10 years. However, in actual work, the condition that the lookout lamp strip is damaged begins to appear when the equipment runs for about one year, and the lookout lamp strip directly influences a driver to observe the field condition once the lookout lamp strip breaks down. According to the analysis of the actual operation condition of the field lookout lamp strip, the main reason of the condition is that the lookout lamp strip is in an all-weather working state, the temperature of the LED is gradually increased at the moment, the higher temperature can influence the luminous efficiency of the LED, and the service life of the LED is obviously shortened; on the other hand, the resistance of the semiconductor decreases with increasing temperature, and the falling resistance brings about a larger current to generate more heat, which accelerates the destruction of the LED lighting device including the LED.

Disclosure of Invention

To current lookout lamp area because all-weather work leads to defect and the problem that the fault rate is high, the utility model provides a platform door system lookout lamp area controlling means and control method.

The utility model provides a scheme that its technical problem adopted is: the device comprises a micro-control unit, a door opening and closing detection module, a train position detection sensor and a lookout lamp belt control circuit, wherein the door opening and closing detection module is connected to each sliding door head in parallel, and the output end of the door opening and closing detection module is connected with the input end of the micro-control unit and used for transmitting a door opening and closing signal to the micro-control unit; the train position detection sensor is connected with the input end of the micro control unit and is used for transmitting a train position signal to the micro control unit; the micro control unit controls a signal line at the output end to control the connection and disconnection of the lookout lamp belt through a switch element so as to control the on and off of the lookout lamp belt; under the normal condition, watch the lamp area state and receive train position detection sensor control, when train position detection sensor trouble or non-operating time, watch the lamp area state and receive switch signal control.

The device for automatically controlling the on and off of the lookout lamp band further comprises a power module and a delay circuit, wherein the power module is connected with the input end of the micro control unit and used for supplying power to the whole control device; and the delay circuit is connected with the input end of the micro control unit and is used for delaying and controlling the extinguishment of the lookout lamp band.

In the device for automatically controlling the on and off of the lookout lamp strip, the signal wire of the control output end of the micro control unit is connected with the base electrode of the triode Q1, the emitting electrode of the triode Q1 is connected with the coil of the relay J1 in series and then connected with the direct-current power supply VCC, and the collecting electrode of the triode Q1 is grounded; the lookout lamp belt is connected with a lookout lamp belt power supply through a normally closed end of the relay J1.

The device that foretell automatic control lookout lamp area was lighted and is gone out, lookout lamp area controlling means and gate unit group parallel connection back are connected with the relay that opens the door, and the relay model that opens the door is unanimous with the inside relay model that opens the door of gate unit, guarantees signal detection's stability.

Foretell device that automatic control lookout lamp area was lighted and is gone out still includes safety circuit, and safety circuit passes through safety circuit signal connection and lookout lamp area control circuit and is connected for control lookout lamp area control device.

The device for automatically controlling the fire of the lookout lamp band is characterized in that the train position detection sensor is a sensor which cannot generate visible light and comprises any one of common position sensors such as an ultrasonic sensor and an infrared sensor.

According to the device for automatically controlling the lookout lamp to light up and light out, the USB interface is arranged on the device and used for program upgrading.

The utility model has the advantages that:

1. the utility model discloses the device possesses the control mode who watches the lamp area through switch door instruction control for vehicle position detection sensor inefficacy or non-operating time is to watching the control in lamp area. In the control mode, when the platform door system sends out a door opening instruction, the lookout lamp strip is lightened; after the platform door system sends the instruction of closing the door, delay circuit begins the timing, and after the time delay, lookout lamp area extinguishes.

2. The utility model discloses a non-formula sensor detects the vehicle position, when the train locomotive portion entered into sensor detection range, the device lighted the lookout lamp area, realized that the train lighted the purpose in lookout lamp area when coming to the station; for the accuracy of ensureing to train position detection, the device can adopt a plurality of non-formula sensors that connect to detect the train position, avoids train position sensor itself to produce visible light influence driver moreover and observes gavel lamp area, the utility model discloses select this kind of sensor that does not produce visible light of ultrasonic sensor for use to be used for detecting the train position.

3. When the train leaves, when the train rear of a vehicle part leaves sensor detection range, the device extinguishes the lookout lamp area, and the requirement of looking out the normal observation of lamp area can be satisfied through this kind of mode.

4. The lookout lamp area sets up at the platform both ends, uses the switch door instruction as backup control mode time, instruction signal direct by adjacent sliding door head wiring can, the wiring is simple, installs the degree of difficulty additional less.

5. The control mode of the lookout lamp belt is controlled through the door opening and closing instruction, so that the lookout lamp belt is more suitable for the transformation of the existing line; the more preferred scheme is that adopt the instruction of opening the door and the safety circuit state to control lookout the lamp area, owing to use the safety circuit state to need draw forth a safety circuit state line from the equipment room, more be applicable to the new line and use, use the safety circuit state to replace the instruction of closing the door, can effectively avoid sliding door to close the door in-process and appear pressing from both sides the influence that people's clamp object leads to the time of closing the door to lengthen, control more accurately.

6. No matter use the instruction of closing the door or the safety circuit state as the control signal that lookout the lamp area and extinguish, there is not any influence to device hardware and procedure, changes external signal source and delay time and can realize.

7. The utility model discloses the device possesses the time delay adjustment circuit, and the minimum unit of time delay is 10S, realizes the time delay adjustment after the sliding door closes through two address coding switches of rotating, and the time delay is 0-990S, prevents that the person of clamp from appearing in the sliding door closing process and leads to closing the door time lengthening, influences the driver and watch, ensures that the sliding door closes after, watches the lamp area and keeps sufficient light-up time. When the delay circuit delays and exceeds the maximum running interval of the train, the device can realize that the watchband is often bright under the sensor failure mode.

8. The utility model discloses the device is watched the lamp area control circuit and is utilized relay normally closed contact to control, when the device goes wrong, is watched the lamp area and is in the state of often brightening, can not influence the driver and normally watch.

9. The device is designed with a fast fusing fuse, which does not affect the operation of the existing system of the platform door.

10. The external wiring of the device is connected by adopting a connector, so that the replacement is simple. Possess the USB interface, the device possesses the USB interface and is used for the program upgrade, and the upgrading is convenient, can carry out optimization adjustment to the program according to on-the-spot actual conditions.

11. Through the mode that the light strip was watched in the control automatic extinguishment when not watching the demand, reduce the light strip and light the time, solve and watch the light strip and often light the influence to inside LED life, reduce and watch the lamp strip fault rate.

12. The utility model discloses a set up rheostatic switch control and watch the lamp area and light gradually or extinguish, can effectively avoid the electric current too big or the undersize to cause the influence to watching the lamp area, can effectively prolong the life who watches the lamp area.

Drawings

Fig. 1 is the utility model discloses watch lamp area controlling means schematic diagram.

Fig. 2 is a schematic block diagram of the present invention.

Fig. 3 is the utility model discloses the switch door signal detection schematic diagram.

Fig. 4 is the safety circuit detection schematic diagram of the present invention.

Fig. 5 is a flow chart of the present invention.

Fig. 6 is a schematic structural diagram of the switching element of the present invention.

Fig. 7 is a schematic structural view of the varistor disk of the present invention.

Reference numbers in the figures: 1 is a carrying disc, 2 is a rheostat slideway, 3 is a rheostat slide sheet, 4 is a driving gear, 5 is a driven gear, 6 is a composite driving gear, 7 is an insulating end, and 8 is a stepping motor.

Detailed Description

Aiming at the problems and the defects that the LED luminous efficiency is low and the service life is shortened due to the fact that the LED temperature rises due to the fact that the existing subway lookout lamp band is constantly lighted, the utility model provides a lookout lamp band control device and a lookout lamp band control method for a platform door system, wherein an MCU controls the lookout lamp band according to a train position signal, the lookout lamp band is lighted when a train enters a station, and the lookout lamp band is extinguished after the train leaves the station; during the inspection before maintenance and station operation, through the bright of the command control lookout lamp area of switch door, satisfy the demand to lookout lamp area work among these working processes. The present invention will be further explained with reference to the drawings and examples.

Example 1: the subway platform door separates the platform from the train operation area, and the lookout lamp strip is arranged on the upright post of the end door of the platform door or at a position near the upright post for a driver to observe whether foreign matters exist between the train and the platform door. The embodiment provides a watchband control device for a platform door system, as shown in fig. 1 and fig. 2, the device comprises a power module, a Micro Control Unit (MCU), a door opening and closing detection module, a train position detection sensor, a delay circuit and a watchband control circuit, wherein the train position sensor is used for acquiring the position of a train, and since the watchband is all lighted up by a reference for a driver to observe whether a foreign object exists between a train and a platform door, in order to avoid the influence of other light rays on the watchband, the train position sensor selects a sensor which does not generate visible light and is in a non-contact manner to detect the position of a vehicle, for example, an ultrasonic sensor and other common sensors which do not generate visible light; meanwhile, in order to ensure the accuracy of train position detection, a plurality of non-contact sensors can be adopted to detect the train position.

The power supply module is connected with the input end of the micro control unit and used for supplying power to the whole control device; door closing detection module connects in parallel each of subway platform door system overhead with the nearest sliding door of distance with it, door opening detection module's output and little the control unit's input are connected and are used for opening the door signal and close the door signal transmission for little the control unit, as shown in fig. 3, watch on door and be connected with the relay that opens the door after the lamp area controlling means and the overhead gate unit group parallel connection of each door of platform door system, the gate unit group includes the overhead gate unit of each door, like DCU1, DCU2, … … DCU N, N is platform door quantity, 24V power is connected to the relay contact that opens the door, the relay model that opens the door is unanimous with the inside relay model that opens the door of DCU, guarantee the stability. The output end of the train position detection sensor is connected with the input end of the micro control unit and used for transmitting a train position signal to the micro control unit; the micro control unit is connected with the lookout lamp belt control circuit and is used for controlling the lookout lamp belt to be on or off; as shown in fig. 1, the lookout light band control circuit comprises a triode Q1, an electromagnetic relay J1 and a lookout light band, a signal line of a control output end of the micro control unit is connected with a base electrode of a triode Q1, an emitting electrode of the triode Q1 is connected with a coil of a relay J1 in series and then connected with a direct current power supply VCC, and a collector electrode of the triode Q1 is grounded; the lookout lamp strip is connected with an alternating current power supply through a normally closed end of the relay J1; the device lookout lamp belt control circuit utilizes the normally closed contact of the relay to control, and when the device goes wrong, the lookout lamp belt is in a normally bright state, so that the normal lookout of a driver can not be influenced.

The delay circuit is connected with the input end of the micro control unit and used for delaying control of extinguishment of the lookout lamp belt, the minimum delay unit is 10S, delay adjustment after the sliding door is closed is achieved through the two rotary address coding switches, delay time is 0-990S, the phenomenon that the door closing time is prolonged due to the fact that people are clamped in the sliding door closing process is prevented, lookout by a driver is influenced, and the lookout lamp belt keeps enough lighting time after the sliding door is closed is guaranteed. When the delay circuit delays and exceeds the maximum running interval of the train, the device can realize that the watchband is often bright under the sensor failure mode.

The device has a control mode for controlling the lookout lamp strip through a door opening and closing instruction, and is used for controlling the lookout lamp strip by the failure or non-operation time of the vehicle position detection sensor, and in the control mode, the lookout lamp strip is lightened when the platform door system sends a door opening instruction; after the platform door system sends a door closing instruction, the delay circuit starts to time, and after the delay is finished, the lookout lamp band is extinguished; when the position detection fails or the non-operation time needs to control the lookout lamp belt, the device automatically enters a door opening and closing control mode because the device does not receive train arrival signals all the time. Under this mode, when the sliding door opened the door, watch out the lamp area and light, the sliding door got into the time delay procedure when closing the door, and the delay time was confirmed according to the rotary address coding switch, and the back is closed to the sliding door, because watch out the lamp area and light when opening the door, the driver can normally observe, observes after there is not the problem, and the train normally exits, and the delay time is then, watches out the lamp area and extinguishes, waits for the train next time and enters the station. When the door opening signal and the safety loop signal are used as control signals, the flow is completely the same as that when a door opening and closing instruction is used.

When the existing subway line is transformed, the door opening and closing instruction is used for controlling the lightening and extinguishing of the lookout lamp belt. If improve newly establishing the circuit, can adopt the instruction of opening the door and the safety circuit state is controlled watchband, as shown in fig. 4, safety circuit needs to draw forth a safety circuit signal connection as organizing control signal from the equipment room, the 24V power is exported through controlling the safety circuit relay, no matter be the instruction of opening and closing the door or the safety circuit signal is 24V power and exports through controlling the relay, consequently two kinds of control mode circuit are the same completely, no matter be the use instruction of closing the door or the control signal that the safety circuit state was gone out as watchband, no any influence has to device hardware and procedure, change external signal source and delay time and can realize.

Because use the safety circuit state and need draw forth a safety circuit state line from the equipment room, be more applicable to newly-built circuit, use the safety circuit state to replace the instruction of closing the door, can effectively avoid sliding door to close the door in-process and appear pressing from both sides the influence that the thing leads to closing the door time lengthening by the people clamp, control more accurate.

In order to further improve the performance of the device, a fast fusing fuse is arranged in the device, and the operation of the existing system of the platform door is not influenced; the external wiring of the device is connected by adopting plug-ins, so that the later-stage replacement is simpler and more convenient; meanwhile, a USB interface is arranged outside the device, so that the program is upgraded conveniently, and the program can be optimized and adjusted according to the actual situation on site.

Under normal conditions, the MCU controls the lookout lamp belt according to the train position signal, so that the lookout lamp belt is lighted up when a train enters a station, and the lookout lamp belt is extinguished after the train leaves the station; during maintenance and check before station operation, the door opening and closing instruction is used for controlling the on and off of the lookout lamp strip, the specific flow is shown in fig. 5, the lookout lamp strip is detected by a train position sensor, and when a train entering the station is detected, the lookout lamp strip is on; after the train stops stably, a driver performs door opening operation, passengers get on and off the train and then close the train, the driver observes whether foreign matters exist between the train and a platform door through the observation lamp band after the sliding door is closed, the observation lamp band is already lighted when the train enters the station, the driver can normally observe, and the train normally leaves the station after observation is free of problems; when the train leaves the station, when the rear of a vehicle leaves the station, train position detection sensor detects the train back of leaving the station, gets into the time delay procedure, judges the train position once more after 2S delays, prevents to watch out the lamp area and appears the malfunction, influences the driver and observes, can satisfy the demand of watching out the lamp area and normally observing through this kind of mode, and twice all detects the train and has not been behind the platform, and the control is watched out the lamp area, waits for the next train to enter the station.

Example 2: the same parts of this embodiment as those of embodiment 1 are not described again, but the difference lies in that the watchband control circuit has differences, specifically, the switching element of this embodiment is a rheostatic switch, as shown in fig. 6, the rheostatic switch includes a gear box and a rheostatic disc, the gear box includes a driving gear 4, a driven gear 5 and a composite driving gear 6, the driving gear is engaged with the driven gear, the composite driving gear is coaxially connected with the driven gear, the rheostatic disc includes a terminal driven gear, the terminal driven gear is engaged with the composite driving gear, a carrier disc 1 is arranged on the terminal driven gear, the carrier disc is integrally connected with the terminal driven gear, a slide rheostat is arranged on the carrier disc, a rheostatic slideway 2 and a rheostat slide 3 are arranged on the slide rheostat, one end of the slide rheostat is connected with a contact N1, the other end of the slide rheostat is provided with an insulating end 7, the gear of the gear box rotates to drive the carrying disc 1 to rotate, and the rheostat sliding sheet 3 slides in the rheostat sliding way 2.

When the train is not at the station or does not arrive at the station, the rheostat slide sheet is positioned at the insulating end of the slide rheostat, and the lookout lamp belt is in a disconnected state at the moment. The lookout lamp goes out; when the door opening and closing detection device and the train position sensor detect that the train is about to enter the station, the gear box starts to work, the drive carrying disc rotates, the gear box stops rotating after the rheostat sliding sheet slides in the rheostatic sliding way for a certain angle, the sliding sheet does not slide any more, the resistance value of the rheostat in the whole process is reduced, the current is gradually increased, the lookout lamp belt is gradually lightened, and the service life of the lookout lamp belt is prevented from being rapidly lightened under the action of strong electricity. When a train leaves a station, no foreign object exists between a platform door and a lane, the micro control unit controls the platform door to close, the control gear box rotates reversely, the rheostat slide sheet slides reversely in the rheostat slide way to the insulating end, the gear box stops rotating, the slide sheet does not slide any more, the resistance value of the rheostat in the whole process is changed from small to large, the current is gradually reduced, and the lookout lamp belt is gradually extinguished. The device can avoid watching the lamp area under the forceful electric power effect and light and the electric current disappears and watches the lamp area and extinguish rapidly and influence the lamp area life-span.

Example 3: this embodiment is no longer repeated with the same place of embodiment 2, and the difference lies in that, as shown in fig. 7, the terminal driven gear of the varistor switch of this embodiment is by step motor drive 8, and step motor drive year dish 1 forward or reverse rotation can also accurate control pivoted angle when realizing the increase or the reduction of resistance, can control the time that watchful lamp area lights up or goes out according to demand control step motor's slew velocity during actual use, simple and convenient practical.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement and improvement made within the spirit and principle scope of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides an automatic control device that lookout lamp area is bright goes out which characterized in that: the system comprises a micro control unit, a door opening and closing detection module, a train position detection sensor and a lookout lamp belt control circuit, wherein the door opening and closing detection module is connected on a corresponding sliding door head in parallel, and the output end of the door opening and closing detection module is connected with the input end of the micro control unit and used for transmitting a door opening and closing signal to the micro control unit; the train position detection sensor is connected with the input end of the micro control unit and is used for transmitting a train position signal to the micro control unit; the micro control unit controls a signal line at the output end to control the connection and disconnection of the lookout lamp belt through a switch element so as to control the on and off of the lookout lamp belt; under the normal condition, watch the lamp area state and receive train position detection sensor control, when train position detection sensor trouble or non-operating time, watch the lamp area state and receive switch signal control.

2. The device for automatically controlling on and off of lookout light strips according to claim 1, is characterized in that: the power supply module is connected with the input end of the micro control unit and used for supplying power to the whole control device; and the delay circuit is connected with the input end of the micro control unit and is used for delaying and controlling the extinguishment of the lookout lamp band.

3. The device for automatically controlling on and off of lookout light strips according to claim 1, is characterized in that: the signal wire of the control output end of the micro control unit is connected with the base electrode of a triode Q1, the emitter electrode of a triode Q1 is connected with a coil of a relay J1 in series and then connected with a direct current power supply VCC, and the collector electrode of a triode Q1 is grounded; the lookout lamp belt is connected with a lookout lamp belt power supply through a normally closed end of the relay J1.

4. The device for automatically controlling on and off of lookout light strips according to claim 1, is characterized in that: the lookout lamp belt control device is connected with the door opening relay after being connected with the door control unit group in parallel, and the type of the door opening relay is consistent with that of the door opening relay in the door control unit.

5. The device for automatically controlling on and off of lookout light strips according to claim 1, is characterized in that: still include safety circuit, safety circuit passes through safety circuit signal wiring and is connected with lookout lamp area control circuit for control lookout lamp area controlling means.

6. The device for automatically controlling on and off of lookout light strips according to claim 1, is characterized in that: the train position detection sensor is a sensor which cannot generate visible light and comprises any one of an ultrasonic sensor and an infrared sensor.

7. The device for automatically controlling on and off of lookout light strips according to claim 1, is characterized in that: and the device is also provided with a USB interface for program upgrading.

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