CN205890861U - Subway parking assist system - Google Patents

Abstract

The utility model relates to a subway parking assist system, install the head at subway train including a laser emitter, a photoelectric sensor, the 2nd photoelectric sensor, the 3rd photoelectric sensor, fourth photoelectric sensor installs respectively on the wall of track one side, be used for the receiving and sending photosignal, wherein a photoelectric sensor installs to enter the station at subway train and begins the position of braking, fourth photoelectric sensor installs in the position that subway train need stop, the 2nd photoelectric sensor, the 3rd photoelectric sensor installs suitable position between a photoelectric sensor and fourth photoelectric sensor. The utility model discloses can be intelligent park does not need artificial the operation to solve the artifical problem of parkking and bringing. Coming indirect weight before calculating the train and entering the station at every turn through detecting train speed, conveniently adjusting the output of brake force, it is stable, accurate more to make the train berth.

Description

A kind of Subway Stop aid system

Technical field

This utility model is related to a kind of Subway Stop aid system, and it can substitute Traditional Man brake, and the entering of intelligence Row stops.

Background technology

Arrival of subway parking is higher to the required precision of its parking spot, and tradition major part stopping technical is all to rely on ground The experience of ferrum driver is being stopped.Although in most cases, driver by virtue of experience tends to stop very Standard, but people is can be tired or spiritual loose after all, and so artificial operation occurs mistake unavoidably.And with artificial intelligence The popularization of energy, realizes the unmanned direction becoming science and technology advance.

Utility model content

The defect existing for prior art, the purpose of this utility model is to propose a kind of Subway Stop aid system, leads to Cross the combination of the sensor and mathematical method output to control braking amount, replace artificial brake and the carrying out of intelligence is stopped.

The technical scheme that this utility model is adopted by its technical problem of solution is as follows:

A kind of Subway Stop aid system, is arranged on the head of subway train, the first photoelectricity including a generating laser Sensor, the second photoelectric sensor, the 3rd photoelectric sensor, the 4th photoelectric sensor is respectively mounted the wall of in rail side On, for receiving and sending photosignal, the wherein first photoelectric sensor is arranged on subway train and enters the station and starts the position of braking, 4th photoelectric sensor is arranged on the position that subway train needs to stop, the second photoelectric sensor, and the 3rd photoelectric sensor is installed Appropriate location between the first photoelectric sensor and the 4th photoelectric sensor.

Compared with prior art, this utility model has the advantage that

The carrying out that this utility model is capable of intelligence is stopped it is not necessary to artificial carrying out operates, thus solving artificial lay-by The problem come.Indirectly calculate the weight before train enters the station every time by detecting train speed, facilitate the defeated of regulating brake force Go out, train can be made to stop more stable, accurate.

Brief description

Fig. 1 is the schematic diagram of Subway Stop aid system.

Specific embodiment

With specific embodiment, this utility model is illustrated below in conjunction with the accompanying drawings.

As shown in figure 1, a kind of Subway Stop aid system, it is arranged on the head of subway train 2 including a generating laser 4 Portion, the first photoelectric sensor 5, the second photoelectric sensor 6, the 3rd photoelectric sensor 7, the 4th photoelectric sensor 8 is separately mounted to On the wall 1 of track 3 side, for receiving and sending photosignal, the wherein first photoelectric sensor 5 is arranged on subway train 2 Enter the station and start the position of braking, the 4th photoelectric sensor 8 is arranged on the position that subway train 2 needs to stop, the second photoelectric sensing Device 6, the 3rd photoelectric sensor 7 is arranged on appropriate location between the first photoelectric sensor 5 and the 4th photoelectric sensor 8.

The operation principle of this utility model system is as follows:

As shown in figure 1, the receiving plane length of four photoelectric sensors is l₀, when subway train 2 is through a point, it is placed in a First photoelectric sensor 5 of point receives the signal that generating laser 4 sends, and starts timing, and generating laser 4 passes through length l₀ First photoelectric sensor 5 stops timing afterwards, show that generating laser 4 passes through the time t of the first photoelectric sensor 5₀, calculate subway Train 2 passes through speed v during the first photoelectric sensor 5_a:

v_a=l₀/t₀(1)

When the first photoelectric sensor 5 receives signal, it is simultaneously emitted by signal to controller, controller controls output traction Power f is braked to subway train 2, when subway train 2 is through b point, calculates subway train 2 according to formula 1 and passes through the second photoelectric sensing Speed v during device 6_b:

v_b=l₀/t₁(2)

Wherein t₁Pass through the time of the second photoelectric sensor 6 for generating laser 4.

In the process travelling mechanical analyses are carried out to train:

F-f=ma (3)

v_b ²-v_a ²=2al_ab(4)

In formula, f is the pull strength of braking, and f is frictional resistance when subway train 2 is advanced, f=μm, and wherein μ is friction system Number and the product of acceleration of gravity, coefficient of friction can be tabled look-up and be drawn, m is the weight of subway train 2, and a is adding of subway train 2 Speed, l_abFor a, the distance between 2 points of b, do not consider the factor in addition to frictional resistance, the weight of subway train 2 can be calculated M:

$m=\frac{f}{v_b^2-v_a^2/2l_{ab}+\mathrm{\μ}}---\left(5\right)$

Because subway train 2 passes through speed v during the second photoelectric sensor 6_bIt is known that v_dFor the distance between 2 points of 0, b, d l_bdIt is known that the traction force f required for b point to d point stops completely can be calculated:

F-f=ma (6)

$f=ma+f=m\frac{v_d^2-v_b^2}{2l_{bd}}+\mathrm{\μ}m---\left(7\right)$

This is ideally, exclude all extraneous factors can stopping a train at a target point, but reality often has some by mistake Difference, so by introducing c point, when subway train 2 reaches c point, calculate speed v in c point for the subway train 2_c.Now again Calculate c point and arrive d point and stop completely required traction force f ':

$f^{\′}=m\frac{v_d^2-v_c^2}{2l_{cd}}+\mathrm{\μ}m---\left(8\right)$

After two adjustment pull strengths, when subway train 2 reaches d point, speed is 0 or closely 0, finally reaches d During point, subway train 2 forces brake after receiving the instruction of controller, enables the controller to come to a complete stop.

Claims (1)

1. a kind of Subway Stop aid system it is characterised in that: include a generating laser (4) be arranged on subway train (2) Head, the first photoelectric sensor (5), the second photoelectric sensor (6), the 3rd photoelectric sensor (7), the 4th photoelectric sensor (8) it is respectively mounted on the wall (1) of in rail (3) side, for receiving and sending photosignal, the wherein first photoelectric sensor (5) it is arranged on subway train (2) and enters the station and start the position of braking, the 4th photoelectric sensor (8) is arranged on subway train (2) needs The position stopping, the second photoelectric sensor (6), the 3rd photoelectric sensor (7) is arranged on the first photoelectric sensor (5) and the 4th light Appropriate location between electric transducer (8).