Escalator security system
Technical field
This utility model relates to escalator field, is specifically related to a kind of escalator security system.
Background technology
Escalator has been widely used in the public places such as market from since invention.As depicted in figs. 1 and 2, existing escalator is arranged in hoistway 3, including multiple stage circulation step 1 and reversing shaft 2.Leaving pit 7 at the two ends up and down of hoistway 3, be provided with safety screen 5 between the step 1 of pit 7 and commutation, pit 7 is arranged over extending to the cover plate 4 above horizontal step 1 from floor ground.The automatic staircase control cabinet 6 controlling escalator operation it is provided with in pit 7.For security consideration, the diverse location of escalator is typically provided with multiple danger button being connected with automatic staircase control cabinet 6.Run into emergency, it is necessary to people presses danger button nearby, and this is responded by automatic staircase control cabinet 6, control escalator out of service, in order to process.
Above-mentioned escalator in use, if danger button is pressed not in time, causes serious consequence.Therefore, additionally providing in prior art and automatically detect security system, this system mainly arranges infrared detector in hoistway, in order to when step or cover plate drop, automatic staircase control cabinet control escalator is out of service.
But above-mentioned security system still has deficiency, first, when existing security system is arranged, the infrared ray of multiple infrared detectors is perpendicular to stepping motion direction.It is quite big that infrared detector quantity too much arranges that excessively intensive words then consume energy, and lazy weight can be automatically stopped situation (it is out of service that the step operation dropped just can control escalator to the position having infrared detector) not in time when arranging comparatively sparse, reduce security protection effect.
In view of this, special proposition this utility model.
Utility model content
The technical problems to be solved in the utility model is in that to overcome the deficiencies in the prior art, it is provided that a kind of escalator security system, reduces energy consumption, plays the effect of timely security protection.
For solving above-mentioned technical problem, the basic conception of this utility model employing technical scheme is:
Escalator security system, including:
Verification relay, outfan is connected into escalator operation loop;
Processing module, controls verification relay adhesive and release;
Safety monitoring device, including the generating laser cooperated and laser pickoff;
Generating laser, is provided with Laser emission mouth, is arranged at the high-end of escalator and emission port and towards escalator low side or is arranged at the low side of escalator and emission port is high-end towards escalator;
Laser pickoff, receives the laser from described generating laser, and is connected with processing module signal;
The laser pickoff cooperated and generating laser are separately positioned on the high-end of escalator and low side;
Described generating laser and laser pickoff are arranged in the hoistway of escalator.
Above-mentioned escalator security system, described generating laser at least two, it is respectively arranged at the left part below escalator step and right part.
It addition, applicants have discovered that, security system in prior art is generally individually is utilize infrared detector that step is monitored, and the cap locations of the danger that is susceptible to subside artificially is ignored.For solving this problem, in this escalator security system, described safety monitoring device also includes:
Infrared transmitter, is provided with infrared emitting mouth, is arranged at below escalator two end cover plate;
Infrared remote receiver, receives the infrared ray from described infrared transmitter, and is connected with processing module signal.
Above-mentioned escalator security system, described infrared transmitter is multiple, described infrared emitting mouth towards be perpendicular to step advance direction;Below infrared transmitter concentrated setting cover plate above commutation place of described step.
Above-mentioned escalator security system, described processing module includes:
Monitoring loop, is connected with safety monitoring device, for controlling adhesive and the release of verification relay;
Alarm module, response is reported to the police;
Power module;
Control module, be connected with monitoring loop, control the response with alarm module that powers on of safety monitoring device.
Above-mentioned escalator security system, described processing module also includes:
Safety return circuit voltage detection module, is connected with escalator operation loop, is used for detecting escalator operation loop voltage;
Safety return circuit current detection module, is connected with escalator operation loop, is used for detecting escalator operation loop current;
Start delay idle circuit, is all connected with safety return circuit current detection module and safety return circuit voltage detection module, exports power on signal to power module for the detection signal according to safety return circuit voltage detection module or safety return circuit current detection module;
Described control module includes the first safety relay and the second safety relay;
Described first safety relay, outfan is connected into escalator operation loop, is used for controlling escalator operation loop break-make, is additionally operable to select safety return circuit voltage detection module;
Described second safety relay, outfan is connected into escalator operation loop, is used for controlling escalator operation loop break-make, is additionally operable to select safety return circuit current detection module.
Above-mentioned escalator security system, described processing module also includes:
Safety return circuit envelope line detection module, is connected with escalator operation loop, and the safety return circuit for escalator seals line states detection.
After adopting technique scheme, this utility model compared with prior art has the advantages that
1, solve infrared detector arrange intensive power consumption or arrange sparse response problem not in time, this utility model adopts the set-up mode changing detector, and a line of induction can monitor multiple step simultaneously, once occur step to drop, detector can feed back immediately, quantity required is few, and power consumption is low;
2, the laser of two-way laser generator is arranged on left part and right part, it is possible to effectively monitor the situation (only arranging a road laser, when occurring that step one side comes off, if the side that laser does not just fall off through step, do not play a protective role) dropped step one side;
When 3, controlling the abnormal conditions that module receives monitoring circuit monitoring, alarm module response is reported to the police, and power module stops powering on to safety monitoring device simultaneously, saves the energy, and can extend the service life of safety monitoring device;
4, safety return circuit voltage detection module and safety return circuit current detection module carry out escalator operation detection, and when escalator runs normally, escalator security system of the present utility model just can be properly functioning, plays the effect of monitoring;So can avoid under escalator holding state because security monitoring produces electric energy loss, also can extend the service life of safety monitoring device.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art escalator.
Fig. 2 is the plan structure schematic diagram of prior art escalator.
Fig. 3 is the structural representation of the escalator being provided with this utility model escalator security system.
Fig. 4 is the plan structure schematic diagram of the escalator being provided with this utility model escalator security system.
Fig. 5 is that the structure of this utility model escalator security system is away from block diagram.
In above-mentioned accompanying drawing, 1, step;2, reversing shaft;3, hoistway;4, cover plate;5, safety screen;6, automatic staircase control cabinet;7, pit;
10, processing module;801, generating laser;802, laser pickoff;803, laser;901, infrared transmitter;902, infrared remote receiver;903, infrared ray.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, to help understanding content of the present utility model.
As shown in Figure 3 and Figure 4, this utility model provides escalator security system, including: verification relay, outfan is connected into escalator operation loop;Processing module 10, controls verification relay adhesive and release;Safety monitoring device, including the generating laser 801 cooperated and laser pickoff 802;Generating laser 801, is provided with Laser emission mouth, is arranged at the high-end of escalator and emission port and towards escalator low side or is arranged at the low side of escalator and emission port is high-end towards escalator;Laser pickoff 802, receives the laser 803 from described generating laser 801, and is connected with processing module 10 signal;The laser pickoff 802 and the generating laser 801 that cooperate are separately positioned on the high-end of escalator and low side;Described generating laser 801 and laser pickoff 802 are arranged in the hoistway 3 of escalator.So, solve infrared detector arrange intensive power consumption or arrange sparse response problem not in time, this utility model adopts the set-up mode changing detector, article one, the line of induction can monitor multiple step simultaneously, once occur step to drop, detector can feed back immediately, quantity required is few, and power consumption is low.
Described generating laser 801 at least two, is respectively arranged at the left part below escalator step 1 and right part.Two-way generating laser 801 is arranged on left part and right part, it is possible to effectively monitor the situation (only arranging a road laser, when occurring that step one side comes off, if the side that laser does not just fall off through step, do not play a protective role) dropped step one side.
Causing danger in order to avoid cover plate for escalator 4 drops, safety monitoring device also includes: infrared transmitter 901, is provided with infrared emitting mouth, is arranged at below escalator two end cover plate 4;Infrared remote receiver 902, receives the infrared ray 903 from described infrared transmitter 901, and is connected with processing module 10 signal.Described infrared transmitter 901 is multiple, described infrared emitting mouth towards be perpendicular to step advance direction;Infrared transmitter 901 concentrated setting is below the cover plate of described step commutation place (this position is dangerous maximum position, cover plate place, therefore key monitoring) top.
As it is shown in figure 5, processing module 10 includes:
Monitoring loop, is connected with safety monitoring device, for controlling adhesive and the release of verification relay;
Alarm module, response is reported to the police;
Power module, for alarm module, safety monitoring device and control module for power supply;
Control module, be connected with monitoring loop, control the response with alarm module that powers on of safety monitoring device.In the present embodiment, what control module employing is 74HC74 chip.
The output relay switch series of the receptor (including infrared remote receiver 902 and laser pickoff 802) of described safety monitoring device is connected in monitoring loop, controls adhesive and the release of host monitor relay.When not having light beam (including laser 803 and infrared ray 903) to be blocked, monitoring loop turns on, and verification relay adhesive, for normal condition, escalator operation loop is conducting state, and escalator is properly functioning;When there being light beam to be blocked, monitoring loop disconnects, and verification relay discharges, and cuts off escalator operation loop, it is achieved the automatic stop of escalator.Meanwhile, controlling module output signal and trigger warning to alarm module, safety monitoring device stops powering on simultaneously.So, when controlling the abnormal conditions that module receives monitoring circuit monitoring, alarm module response is reported to the police, and power module stops powering on to safety monitoring device simultaneously, saves the energy, and can extend the service life of safety monitoring device.
If using traditional infrared detector to make infrared ray high-end by escalator high-end directive low side or low side directive according to mode in this specification, then can produce the problem that infrared ray coverage is inadequate, therefore the art of this patent scheme adopts the generating laser and laser pickoff replacement infrared detector that collimation is good.But owing to human body fragility position such as eyes etc. can be damaged by laser, when therefore also assures that step drops by the above-mentioned technical scheme stopping when exception being detected safety monitoring device is powered on, personnel will not be subject to laser hazard.
Security system of the present utility model can realize real time operation mode, and no matter whether escalator powers on, and whether escalator operation loop turns on, and step 1 and cover plate 4 all can be monitored by native system in real time, eternally.
In addition, escalator uses due to unmanned in the standby state, just will not cause danger, now without monitoring, therefore this utility model have also been devised the technical scheme of intelligent operation mode, processing module 10 also includes: safety return circuit voltage detection module, is connected with escalator operation loop, is used for detecting escalator operation loop voltage;Safety return circuit current detection module, is connected with escalator operation loop, is used for detecting escalator operation loop current;Start delay idle circuit, is all connected with safety return circuit current detection module and safety return circuit voltage detection module, exports power on signal to power module for the detection signal according to safety return circuit voltage detection module or safety return circuit current detection module;Described control module includes the first safety relay and the second safety relay;Described first safety relay, outfan is connected into escalator operation loop, is used for controlling escalator operation loop break-make, is additionally operable to select safety return circuit voltage detection module;Described second safety relay, outfan is connected into escalator operation loop, is used for controlling escalator operation loop break-make, is additionally operable to select safety return circuit current detection module.First safety relay and the second safety relay are all connected into escalator operation loop, substantially increase safe system the instant break-make of elevator operating loop is controlled, also ensure that operating loop can be carried out detection (carrying out current detecting when carrying out voltage detecting, path during open circuit) in real time by safe system simultaneously.Detection module (includes safety return circuit current detection module and safety return circuit voltage detection module) and escalator operation loop can be carried out real-time detection, standby when finding that escalator can control safe system when being in abnormal operational conditions (abnormal operational conditions includes holding state when nobody takes, off-mode and the state broken down), cut off the electricity supply, safety monitoring device is made to quit work, no longer step 1 and cover plate 4 are monitored, thus reducing system power dissipation, therefore saves energy, also extend the service life of safety monitoring device.
Consider that elevator repair and maintenance personnel are when maintenance lift, often have the custom of envelope line, the especially envelope line of safety return circuit.If envelope line is forgotten to tear open, will result in great potential safety hazard, when having step 1 or cover plate 4 drops, safe system will be unable to cut off safety return circuit, so the processing module of safe system is additionally arranged the safety return circuit envelope line detection module connecting escalator operation loop, in order to the safety return circuit for escalator seals line states detection.
Safety return circuit envelope line detection module includes envelope line detection core circuit, alarm output circuit, farad capacitor rotation charge-discharge circuit and square-wave generator;Envelope line detection core circuit adopts fluke circuit tester buzzing shelves to survey the technology of break-make, and when escalator operation loop resistance value being detected less than preset resistive value, then for envelope line states, envelope line detection core circuit outputs signal to alarm output circuit, carries out buzzing warning.The power supply of envelope line detection core circuit have employed non-maintaining farad capacitor rotation discharge and recharge technology, it is not necessary to battery can realize steady operation all the year round.The time of rotation is determined by the frequency of the square-wave generator being connected with farad capacitor rotation charge-discharge circuit.Every a cycle level conversion once, two farad capacitors switch over, it can be ensured that the stable power-supplying of envelope line detection core circuit.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.