CN2424079Y

CN2424079Y - Portable speed limit ground controller for train

Info

Publication number: CN2424079Y
Application number: CN 00224633
Authority: CN
Inventors: 黎若沙; 常庆钢
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-19
Filing date: 2000-04-19
Publication date: 2001-03-21
Anticipated expiration: 2010-04-19

Abstract

The utility model relates to a portable speed limit ground controller for a train, which is composed of a ground speed detecting circuit, a host machine circuit, a code sending circuit and a decoding circuit. The output of the ground speed detecting is connected with the input of the host machine circuit, the output of the host machine circuit is connected with the input of the code sending circuit, and the output of the code sending circuit is connected with the input of the decoding circuit. The utility model has the advantages of simple structure, reasonable design, easy manufacture and processing, convenient installation and use, high automation level, reliable performance, convenient carryover and simple operation. The utility model is an ideal railway-security guaranteeing device for preventing the train doing the ultraspeed action.

Description

Portable train speed limit ground control unit

The utility model relates to a kind of automatic control device, and refering in particular to is portable train speed limit ground control unit.

In daily life, usually need take train, and in order to satisfy the temporal requirement of people, the speed of train is accelerated just constantly because of going out; Though this has improved the efficient of train, also cause simultaneously finally many accident potential, wherein because of the daily railroad maintenance of railway department, construct the speed limit location is set temporarily, require to travel through the train speed limit in this location; Or because of climate reasons causes disconnected rail, expand rail and disaster cause landslide, disconnected road, require to stop immediately near the train in this location, and these all can only instruct by artificial reception and registration at present and reach, even can't realize the purpose of speed limit effectively.

The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of simple in structure, and reasonable in design, processing and manufacturing is easy, and is easy to install, can effectively realize the train speed limit ground control unit of engine limiting operation.

The utility model adopts following proposal to realize: the utility model is made up of ground tachometer circuit, host circuit, signaling circuit, decoding scheme.The output of described ground tachometer circuit connects the input of host circuit, the input of the output sending and receiving decoding circuit of host circuit, and the output of signaling circuit connects the input of decoding scheme.

Concrete structure of the present utility model is described with reference to the accompanying drawings:

Accompanying drawing 1 is an electric functional block diagram of the present utility model.

Accompanying drawing 2 is an electrical schematic diagram of the present utility model.

See accompanying drawing 2, the utility model the utility model is made up of ground tachometer circuit 1, host circuit 2, signaling circuit 3, decoding scheme 4, the output of described ground tachometer circuit 1 connects the input of host circuit 2, the input of the output sending and receiving decoding circuit 3 of host circuit 2, the output of signaling circuit 3 connects the input of decoding scheme 4, wherein ground tachometer circuit 1 comprises Hall element HL1, HL2, is connected in series with host circuit 2 after HL1 and the HL2 parallel connection; Host circuit 2 comprises ic chip 1, IC3, IC8, IC9, and IC8, IC1, IC3, IC9 are connected in series successively, the input end of the mouth sending and receiving decoding circuit 3 of IC9; Signaling circuit 3 comprises ic chip 5, IC6, IC7 and sensor L1, is connected in series with L1 after IC6, IC7, the IC5 parallel connection; Decoding control circuit 4 comprises sensor L2, ic chip 2, IC4, IC10 and relay ZJ1, and L2, IC4, IC10, IC2, ZJ1 are connected in series successively, the meet sb. at the airport parking control loop U that leaks informaton of car of ZJ1.

In the utility model the model of ic chip 1～IC10 be respectively 89C52,89C52,7406, XR-2211, TDA2009, LM567, XR2206, TLP521-2, TLP521-2,40106.

Principle of work of the present utility model is summarized as follows: two elements of HL1, HL2 are made holes probe be installed in the rail homonymy, 35 centimetres of spacings.When train wheel successively from two elements of HL1, HL2 through out-of-date, produce two impulse singlas, be input to D1-and the D2+ pin of IC8 optocoupler TLP521-2.At this moment the C1 of IC8 and C2 pin will successively produce two pulses, import INT0, the INT1 pin of IC1 respectively, and the pitch time of two pulses is T second.According to speed V=0.35 rice/T second, IC1 can calculate the train actual speed, and compares with the limited speed that is preset among the IC1.If actual speed is not more than train speed limit, device is failure to actuate; If surpass train speed limit, the T1 pin of IC1 produces a high level, through the anti-phase D1+ pin for low level input IC9 of IC3.So by C1 and the C2 pin of IC9,3 conductings of signaling circuit, IC6 LM567 chip produces the signal of a fixed frequency, and its size is determined (being assumed to be 300Hz) by R19 and C1.The signal of this fixed frequency is input to the FSKin pin of function generator IC7 through the Rt pin.Function generator IC7 produces a sinusoidal carrier, and its frequency is determined by R20, R9 and R21, R10.So on the carrier wave that the signal loading of the fixed frequency that IC6 produces produces to IC7, be input on 1 pin of power discharging IC 5 by the Wout pin of IC7.Signal after amplifying is by 8 pin and the output of 10 pin of IC5.So on ground transaucer L1, will produce the signal of fixed frequency.L2 is an inductor intrinsic on the locomotive.When be installed in locomotive inductor L2 on the locomotive chassis from ground transaucer L1 top through out-of-date, because the principle of electromagnetic induction, locomotive inductor L2 induces the signal with the L1 same frequency, and signal has just been realized being delivered to purpose on the operating locomotive by ground like this.The end of L2 links to each other with ground, and the other end is input to the IN pin of IC4 phaselocked loop.The signal that IC4 transmits L2 amplifies, and locking and detection signal are that the signal of 300Hz solves with fixed frequency, and produces high level on 5 pin of IC4 and 6 pin, is input to the INT0 and the INT1 pin of IC2 chip through IC10.As long as this bipod on the IC2 chip is for low level, and its T0 pin just produces a high level, and it is electric that the ZJ1 relay is got, and contact closure is connected the locomotive parking control loop that leaks informaton, so locomotive brake device action, brake, train deceleration stops at once.Thereby realized when train exceeds the speed limit the purpose that train is stopped immediately.

In sum, the utility model degree of automation height, dependable performance, easy to carry, simple to operate.It is a kind of desirable railway security ensuring equipment that prevents the train hypervelocity.

Claims

Portable train speed limit ground control unit, form by ground tachometer circuit (1), host circuit (2), signaling circuit (3), decoding scheme (4), it is characterized in that: the output of ground tachometer circuit (1) connects the input of host circuit (2), the input of the output sending and receiving decoding circuit (3) of host circuit (2), the output of signaling circuit (3) connects the input of decoding scheme (4), wherein ground tachometer circuit (1) comprises Hall element HL1, HL2, is connected in series with host circuit (2) after HL1 and the HL2 parallel connection; Host circuit (2) comprises ic chip 1, IC3, IC8, IC9, and IC8, IC1, IC3, IC9 are connected in series successively, the input end of the mouth sending and receiving decoding circuit (3) of IC9; Signaling circuit (3) comprises ic chip 5, IC6, IC7 and sensor L1, is connected in series with L1 after IC6, IC7, the IC5 parallel connection; Decoding control circuit (4) comprises sensor L2, ic chip 2, IC4, IC10 and relay ZJ1, and L2, IC4, IC10, IC2, ZJ1 are connected in series successively, the meet sb. at the airport parking control loop U that leaks informaton of car of ZJ1.