Safety unit

FIELD: transport.

SUBSTANCE: invention relates to railway automation and telemetry systems and may be used in railway safety systems. Locomotive safety control unit comprises accelerometer and processor connected in series. Processor generates control signal and indication signals in emergency. For this it is provided with extra data buses for locomotive control instructions and limitation of motion parameters and their current values as well as control output of warning circuit. Accelerometer is rigidly secured on processor base. Besides, said processor may generate indication signals for engineman, securities and dispatcher while processor signaling circuit output is made up of three appropriate signal buses. Also, processor generates signal to control engine, brakes and door opening mechanism while processor control circuit output is made up of three appropriate control buses.< Processor may generate braking and emergent braking while appropriate control bus is made up of brakes control bus and emergent braking bus. Said processor comprises subtractor, adder, four comparators, two AND element, delay unit and OR element.

EFFECT: expanded operating performances, higher reliability and validity, higher safety.

5 cl, 2 dwg

 

The invention relates to the field of automation and can be used for transport, especially rail, systems security and control.

Known for safety, warning the driver of the deceleration of the vehicle ahead (SA 2663363, B60Q 1/44, 2009-10-22). The device contains an accelerometer, a control unit and stop light. The disadvantage of this device is its limited functionality, it does not solve a number of problems for safe control of the vehicle in a normal mode (e.g., locking doors in the process of the motion), as well as in emergency situations.

Has a more complex structure unit early warning of an emergency described in GB 1286251, G01S 13/78, 1972-08-23. However, its purpose is limited to warning the driver of the deceleration of the vehicle ahead.

Integrated accelerometer is used in a known vehicle to determine its speed (US 2008150468, NR 8/00, 2008-06-26). In this case, the accelerometer integrated in the control unit. This device does not provide solutions to problems of security control.

It is also known the use of the security block in the form of electronic pads containing sequentially connected to the accelerometer, the processor unit p is mate, the transmitter and antenna (GB 2436220, G01H 1/00, 2007-09-19). The accelerometer captures the shock and vibration that is experiencing a structural member, which is fixed to the label, and this information after processing and accumulation is passed with the aim of identifying the resource element of the design. Plate lining is bearing structural member of the security block.

This device is the closest to the invention. It ensures safe use critical elements of the construction vehicle, but its disadvantages include the following:

communication via the radio channel in some cases (for example, the combined effect of pulsed electromagnetic noise and shock wave generated by the explosion) is not reliable;

- the inability to use the normal mode in the security block to control and monitor control signals;

- the inability to work in real-time in General, because the data about the resource are formed in a sufficiently long interval of time;

- inability to recognize and respond to abnormal situations.

The technical result expected from use of the invention is to enhance the functionality of the security block, increasing the reliability of the generated information and the reliability is his work, improving the reliability and safety of the vehicle on which you have installed the security block.

This result is achieved in that the security block containing bearing structural element, which are connected in series accelerometer and processor last executed with additional information inputs for commands to control the vehicle, limitation of motion parameters and the current values of the motion parameters, and alarm output and control the output.

Thus, the merits of the proposals is to ensure that the security block (control train, for example) solves the problem of the analysis of the compliance of the current value of the speed limit, taken from the current carrying cable, rail station, radio communication and the like, and executes the situation mismatch indication to the operator (operator) and enable emergency (or first standard, and then emergency braking. In addition, the unit solves the problem of monitoring compliance with the various control commands to the security paradigm (e.g., blocks command opening doors to the train stop and the like). At the same time the block is composed of an accelerometer located unlike other sensors directly on the PCB of the main processor unit, mine is all intermediate links.

The accelerometer being connected to the input of the control processor of the security block and being located on the same bearing structural member with him, solves several problems:

a) correctly captures the outbreak of an emergency (or otherwise) braking and in case of his absence and the presence of a corresponding control signal to the command braking allows the processor to make a decision on the inclusion of additional systems (as emergency braking and indicating/warning);

b) performs anti-vandal function - if the security block in the process is subjected to abnormal accelerations (e.g., shock) for any of the axes, the processor may be programmed with the various response messages from the protection of the composition to the emergency speed reduction;

C) the presence of abnormal shock (acceleration) detects the fact of the accident (collision with an obstacle on the route, the action of an explosive device and so on), allowing the processor to immediately take the necessary steps to generate the braking command and the like), because the accelerations above a certain threshold, if the unit is operable (which should be confirmed current data internal diagnostic block security or processor), the count for control by the operator or driver of some is the second time not to have all the control in the first seconds after impact should be determined only by automation. This "anti-terrorist" function. It differs from other systems (e.g., determining the status or level of alertness of the operator and the like) is significantly greater performance on the detection of a dangerous situation. The main sensor is the accelerometer in the "heart" of security guarantees its safety together with security block, while other sensors (e.g. accelerometers diagnostic systems, brakes, various speed sensors etc), and most importantly, communicate with them most do not survive under severe accident impacts.

Figure 1 shows the block diagram of the proposed device and shows how it relates to other units of the vehicle. Figure 2 shows a case where the execution processor.

The device contains an accelerometer 1, the output of which is connected with the information input 2 processor 3. Last performed with additional information inputs for control commands 4, limitation of motion parameters 5 and the current values of the motion parameters 6. Alarm output 7 and the control output 8 processor 3 is connected to the inputs of block 9 of the display and the actuators 10. Accelerometer 1 and CPU 3, forming a security block, located on the same bearing structural member 11 (on the same Board, in the same housing.

The processor 3 may be implemented as hardware, and software. The simplest version of its hardware implementation is presented in figure 2. On the bus 12 receives the signal rod. The bus 12 is connected to the first input element And 13, the second, inverting input of which is connected to the bus 14, which summed output signal from the sensor, locking open doors. The output element And 13 are connected to the input of the engine control unit 15. Bus 12 corresponds, as indicated in figure 2, the information input control commands 4, the tire 13 - information input to the current values of parameters of movement 6, etc.

On the bus 16 receives a signal of braking, it is connected with the first inputs of the adder 17 and block 18 of the subtractor, a second input connected to the output of accelerometer 1 and the output to the second input of the adder 17, the output of which is connected to the input unit 19 of the control of the brake mechanism. The output of block 18 subtraction also connected with the input of the diagnostic display unit 24 in the cab.

The output signal from the accelerometer 1 is also fed to the inputs of the Comparators 20, 21. The output of the comparator 20 through the OR element 22 is connected to the input unit 23 of the emergency braking, with the input of the display unit 24 in the cab, as well as the input of the display unit 25 in the guard-room. The output of the comparator 21 is connected to the second in the ode item OR 22 and the input of the display unit 26 to the control point (for example, over the air). The output of block 18 subtraction also connected with the input of the diagnostic display unit 24 in the cab.

On the bus 27 receives information about the speed of composition (from the output of the speedometer). Bus 27 is connected to the inputs of the Comparators 28 and 29. The output of comparator 28 is connected to the first input element And 30, the output of which is connected to the input of the actuator opening doors 31. The second input element And 30 connected to the bus 32 signal opening doors. The second input of the comparator 29 is connected to the bus 33 speed limits of composition. And the output of the comparator 29 is connected with the second input display unit 24 in the cab and the input unit 34 delays, the outputs of which are connected to a third input of the adder 17 and the element OR 22.

All Comparators except the comparator 29 is made in the form of threshold units, i.e. compare the input signal with the threshold set at their second input (figure 2 corresponding circuit not shown).

The actual processor 3 in the example shown in figure 2, is formed by the element And 13, the adder 17, block 18 subtractors, Comparators 20, 21, 28 and 29, the element OR 22, And 30 and the unit 34 delays. Block 9 of the display formed by the blocks 24, 25 and 26. The actuator 10 is formed by the elements 15, 16, 23 and 31.

As noted above, the essence of the proposed technical solution is to ensure that the security and with the accelerometer and the processor last executed with additional information inputs for command control of the vehicle, limitations of the motion parameters and the current values of the motion parameters, and alarm output and control the output.

In other words, the processor 3 is not only made with the possibility of carrying out a regular, full-time algorithms for motion control of the vehicle (engine and/or brake system), opening and closing doors, speed limit on this section of the route depending on the signal received at its input, but the addition of accelerometer 1 (which is structurally designed with them together) and made with the possibility of a joint logical processing of the above-mentioned standard signals and the signal of the accelerometer 1, the actual value of acceleration during acceleration and braking, changing the standard algorithm for diagnosis of shock to the body (bearing structural member 11) of the block security or other emergency situation. This is achieved by the fact that the information inputs 4-6 processor 3 receives the signal of the acceleration from the output of the accelerometer 1, and command control vehicle (entry 4 in figure 1, 2), signals restrictions of movement parameters (input 5 processor 3, for example, the speed limit on this section) and the current value of motion parameters (e.g. velocity at the inlet 6, the position of the doors and so on). At this point, the processor 3 is configured to i.e. monitoring) reference and algorithm of joint processing of these values and decision-making of the notification or those of other persons, and in some cases a translation of "it" motion control.

In particular, the processor 3 may be configured to implement the above algorithms under item"a", "b" and "C".

So, if the bus 14 is the signal "door is open", the And gate 13 is blocking the signal of thrust with the bus 12 to the input of the engine control unit 15. This function refers to the standard mode.

Block 18 subtraction maps the value of the braking signal on bus 16 for the resulting braking signal coming from the output of the accelerometer 1. The value of the obtained difference or inconsistency as a summand (of course, taking into account the sign) to the input of the adder 17 and provides an increase (decrease) controlling effect on the braking system, with its lack (redundant) efficiency. This is the same as the error signal from the output of block 18 of the subtraction is supplied to the input unit 24 of the display, and when a sufficient amount in the unit 24 actuates a threshold device in the cab lit up the scoreboard, indicating that a malfunction of the braking system of composition.

When the output signal of the accelerometer 1 reaches the next threshold (and in more complex cases will be fixed periodic impulse effect of substantial amplitude in the absence of a signal of braking on the bus 16), the comparator 20 produces a signal, which through the element OR 22 activates block emergency braking and will inform not only the driver, but the occupational composition of trying to hack the security block.

In the event of an accidental collision or explosion on the route is triggered comparator 21 and the circuit element OR 22 unit 23 emergency braking, the signal passes and the composition is inhibited. Simultaneously, the block 26 alert Manager radio sends a notification.

The comparator 28 permits the passage of the signal of opening doors with the bus 32 through the element And 30 at a speed of composition, value close to zero. If on the bus 27, the speed signal exceeds the value of the velocity on the bus 33 speed-limiting composition, the output of comparator 29 is a signal input to the block 24 of the display driver. At the same time starts the unit 34 delays that forms over the time interval τ1the signal through the adder 17 to the input unit 19 of the control of the brake mechanism. If after activation of the brake mechanism at the time τ2at the output of the comparator 29, the signal is present, the unit 34 generates a delay signal through the OR element 22 includes a block 23 of emergency braking.

The result is the enhanced functionality of the security block, increasing the reliability of the generated information and reliability, improving the reliability and safety of the vehicle, on which the om has such a security block. This is achieved through the analysis of the compliance of the current value of the speed limit, instantaneous detection of other emergency situations and the capacity to respond quickly to their occurrence indication to the operator (operator) and enable emergency (or first standard, and then emergency braking. In addition, the unit solves the problem of monitoring compliance with the various control commands to the security paradigm.

1. Managing the security block of the vehicle containing the sequentially connected to the accelerometer and the processor, wherein the latter is made with the possibility of generating control signals and indications in emergency situations, which provided additional information tire for vehicle control, limitation of motion parameters and the current values of the motion parameters, and control the output and the alarm output and the accelerometer is rigidly fixed to the base processor.

2. Managing the security block according to claim 1, wherein the processor is configured to generate signals indicating to the operator, protection Manager, and the alarm output of the processor is made in the form of three respective signal tyres.

3. Managing the security block according to claim 1, characterized in that the processor is made with the option of generating signals, control engine brake mechanism and the mechanism of opening doors, and control output of the processor is made in the form of three respective buses.

4. Managing the security block according to claim 3, wherein the processor is configured to generate signals braking and emergency braking, and the corresponding control bus is in the bus control of the brake mechanism and tyres emergency braking.

5. The processor control unit security according to any one of claims 1 to 4, characterized in that it is made in the form of a subtraction unit, adder, four Comparators, two elements, unit delay element OR, when this information the processor bus for the current values of the motion parameters is connected to the first and the second input of the first element And the input of the first comparator and the first input of the second comparator with the possibility of signal transmission thrust, information about the condition of the doors and vehicle speed, respectively, the first input of the subtraction unit and the inputs of the third and fourth Comparators are combined and connected to the input bus acceleration information the input processor to limit the motion parameters is connected with the second input of the second comparator, the information input processor for command control of the vehicle is connected to the joint is United to the first input of the adder and the second input of subtraction unit, and to the first input of the second element And capable of transmitting control commands braking and door openings, respectively, and the output of the subtraction unit is connected to the second input of the adder and the first signal bus display driver, the output of the first comparator is connected with the second input of the second element And the output of which forms the control bus brake mechanism, the output of the second comparator produces a second signal bus display driver and is connected to the input of the delay block, the outputs of which are connected with the third input of the adder and the first input element OR the second input is connected to the output of the third comparator, also forming a third signal bus display driver and bus zone protection, the output of the fourth comparator is connected to the third input of the OR element and a signal bus display Manager, the output of the first element And forms a control bus engine, the output of the adder forms the bus control of the brake mechanism and the output element OR bus emergency braking.



 

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12 cl, 3 dwg

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18 cl, 11 dwg

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3 cl, 3 dwg

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