CN1282573C - Locomotive safety monitoring device - Google Patents
Locomotive safety monitoring device Download PDFInfo
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- CN1282573C CN1282573C CN 02114672 CN02114672A CN1282573C CN 1282573 C CN1282573 C CN 1282573C CN 02114672 CN02114672 CN 02114672 CN 02114672 A CN02114672 A CN 02114672A CN 1282573 C CN1282573 C CN 1282573C
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Abstract
The present invention relates to a safety monitoring device for locomotives, which simultaneously has the functions of alarming protection and reverse protection; the present invention further enhances the running reliability of the locomotives, and lowers manual malfunction rate largely. The present invention comprises a control unit, an input signal conversion unit connected with the control unit by an input signal buffering unit, and an output signal unit connected with the control unit, wherein the control unit comprises a single-chip computer N8 of which the external circuit comprises a reset circuit and an oscillation circuit. The oscillation circuit comprises a passive crystal oscillator G, a capacitor C14 and a capacitor C15; both ends of the passive crystal oscillator G are respectively connected with the single-chip computer N8; one end of each of the capacitor C14 and the capacitor C15 is respectively connected with the passive crystal oscillator G, and the other end is connected with the ground. The positive direction of an integrated circuit N9 of the reset circuit is connected with a diode VD13 in series, and is connected with the reset end of the single-chip computer N8.
Description
One, technical field:
The present invention relates to a kind of safety monitoring device, especially relate to a kind of locomotive safety monitoring device that detects based on locomotive speed with vigilant and communtation protection function
Two, background technology:
Along with science and technology development; a large amount of is with high content of technology; the power electronic equipment of inner structure complexity is widely used at railway locomotive; simultaneously because the running velocity of locomotive is more and more faster; thereby the trainman had higher requirement; require driver's strictness to follow operating instructions; even like this; some unexpected accidents also can take place; engine monitoring apparatus function singleness in the past; do not possess vigilant protection and communtation protection function simultaneously, can't prevent the locomotive failure that the maloperation because of the driver causes.
Three, summary of the invention:
The present invention provides a kind of locomotive safety monitoring device in order to solve the weak point in the above-mentioned background technology, and it possesses vigilant protection and communtation protection function simultaneously, has further improved the reliability of locomotive operation, greatly reduces the human failure rate.
For achieving the above object, the technical solution used in the present invention is:
A kind of locomotive safety monitoring device, its special character is: comprise control unit, the incoming signal converting unit is connected with control unit by the buffer input signal unit, and the output signal unit is connected with control unit.
Above-mentioned control unit comprises micro controller system N8, the external circuit of micro controller system N8 comprises reset circuit and oscillating circuit, described oscillating circuit comprises passive crystal oscillator G and capacitor C 14, capacitor C 15, the two ends of passive crystal oscillator G are connected with micro controller system N8 respectively, one end of capacitor C 14, capacitor C 15 joins with passive crystal oscillator G respectively, other end ground connection, the integrated circuit N9 forward in the reset circuit is connected in series diode VD13, and is connected with the reset terminal of micro controller system N8.
Above-mentioned incoming signal converting unit comprises impulse singla and the release that speed sensor transmits, reply, forward direction, the input change-over circuit of backward signal, impulse singla connects 1 pin of light lotus root isolator N5 after by current-limiting resistance R25,2 pin of light lotus root isolator N5 also are connected with the negative pole of impulse singla, between impulse singla and light lotus root isolator N5 and meet filter capacitor C13,3 pin of light lotus root isolator N5 are told two-way by resistance, the resistance R 27 of leading up to is imported change over signal I5, another road is by resistance R 26 ground connection, 4 pin of light lotus root isolator N5 connect+5V release, reply, forward direction, the input change-over circuit of backward signal is identical circuit.
The input change-over circuit of above-mentioned unlocking signal comprises resistance R 1, unlocking signal is by after the resistance R 1, forward serial connection diode VD1, connecting resistance R5 again, reversal connection stabilivolt V5 then, be connected on 1 pin of light lotus root isolator N1,2 pin of light lotus root isolator N1 also are connected with the negative terminal of unlocking signal, simultaneously between the negative terminal of diode VD1 is born with unlocking signal and connect capacitor C 1, between the negative terminal of stabilivolt V5 and unlocking signal are negative and connecting resistance R9 and capacitor C 2,4 pin of light lotus root isolator N1 are told two-way by resistance, one tunnel ground connection, signal I1 after the input conversion of another road is between incoming signal I1 and ground and meet filter capacitor C9, described replying, forward direction, backward signal green phase input change-over circuit is together imported I2 respectively, I3, I4.
Above-mentioned buffer input signal unit comprises reverse buffer N6 and energy disperser N7 in the same way, the incoming signal that reverse buffer N6 one end and incoming signal converting unit generate joins, the end of energy disperser N7 is connected with reverse buffer N6 in the same way, and the other end is connected with micro controller system N8.
Above-mentioned output signal unit comprises energy disperser N10 and drive part, energy disperser N10 is connected with drive part with micro controller system N8 respectively, the output signal that energy disperser N10 sends connects identical driving circuit, driving circuit comprises the VMOS pipe, the base stage and the output signal of VMOS pipe join, grounded emitter, and collecting electrode is divided into two-way, one tunnel reversal connection light-emitting diode also is connected with+5V, and another road connects solid-state relay.
Above-mentioned power unit comprises the 110V power supply that locomotive provides, at the positive and negative indirect pizo-resistance RV of 110V, meet electrolytic condenser C16 again, the positive and negative terminal of electrolytic condenser C16 is connected on the end of power module N11 and power module N12 respectively, the other end of power module N11 and power module N12 meets electrolytic condenser C17 and electrolytic condenser C18 respectively, simultaneously on power module N11 and power module N12 respectively and meet filter capacitor C19 and filter capacitor C20, and on power module N11 serial connection choke coil L1.
The present invention against existing technologies, its advantage is:
The present invention is installed in the locomotive electric cad system control housing, in the locomotive driving process, on the one hand regularly reminds the driver, make its in the course of the work energy concentrate auto-stop when unforeseen circumstances occurring and make the driver continue to operate; On the other hand the locomotive commutation function is carried out reliably protecting, guarantee when the driver is commutated the correctness of operation, prevent the locomotive failure that the maloperation because of the driver causes.The present invention has further improved the reliability of locomotive operation, greatly reduces the human failure rate.
Four, description of drawings:
Fig. 1 is schematic circuit diagram of the present invention;
Fig. 2 is an external interconnecting wiring diagram of the present invention;
Fig. 3 is main program flow chart among the present invention:
Fig. 4 is timer T1 interrupt routine diagram of circuit among the present invention.
Five, the specific embodiment:
The present invention mainly is in order to solve the current absent minded problem that causes some unnecessary accidents to take place owing to trainman's abuse or in travelling.Implementation method mainly is after five kinds of incoming signals such as forward signal, backward signal, acknowledge signal, unlocking signal and speed signal are handled by buffer circuit, carry out logic analysis and calculating, export corresponding alerting signal, locomotive unloader signal, locomotive stop signal respectively, when unforeseen circumstances appears in locomotive operation or driver's violation operation occurs, make locomotive unloading leaking informaton simultaneously braking, thereby guaranteed the safety traffic of locomotive.Referring to Fig. 1, the present invention includes power unit and control unit, the incoming signal converting unit is connected with control unit by the buffer input signal unit, and the output signal unit is connected with control unit.
1, power unit: comprise the 110V power supply that locomotive provides, 110V+ meets pizo-resistance RV earlier between the 110V-, meet chemical capacitor C16 again, the positive termination 110V+ of chemical capacitor C16, negative terminal meets 110V-, and the positive and negative terminal of electrolytic condenser C16 is connected on 1,2 pin of power module N11, N12 respectively; 4 pin of power module N11, N12 are all unsettled, 3 pin of power module N11, N12 connect the positive pole of electrolytic condenser C17, C18 respectively, 5 pin connect the negative pole of electrolytic condenser C17, C18 respectively, simultaneously again between 3 pin of N11, N12 and 5 pin respectively and meet filter capacitor C19, C20,3 of N12 and 5 pin are just exported the direct supply of 12V after by filter capacitor like this, for exterior DF-16 speed sensor provides working power, the stable 5V direct supply of output behind the 3 and 5 pin serial connection choke coil L1 of power module N11 provides working power to integrated circuit in the device.
2, incoming signal converting unit: wherein release, reply, the input conversion of forward direction, backward signal has identical circuit, in this detailed input conversion of introducing unlocking signal.The unlocking signal of 110V is by after the resistance R 1, forward serial connection diode VD1, connecting resistance R5 again, reversal connection stabilivolt V5 then, be connected to 1 pin of light lotus root isolator N1,2 pin of light lotus root isolator N1 connect the negative terminal of 110V, simultaneously between the negative terminal of diode VD1 is born with 110V and connect capacitor C 1, between the negative terminal of stabilivolt V5 and 110V are negative and connecting resistance R9, capacitor C 2,3 pin of light lotus root isolator N1 are unsettled, 5 pin connect+5V (during the unlocking signal conversion by the button switch K on the panel 5 connect+5V), 4 pin and 6 pin are asked series resistor R13, and resistance R 13 and 6 pin bonded assemblys, one end are divided into two-way, lead up to resistance R 17 ground connection, the signal I1 of another road after by resistance R 21 input conversion is between incoming signal I1 and ground and meet filter capacitor C9.110v replys, forward direction, backward signal green phase with the input of input change-over circuit I2, I3, I4.The 12V impulse singla that speed sensor transmits, by connecing 1 pin of light lotus root isolator N5 behind the current-limiting resistance R25, it is negative that 2 pin meet 12V, between 1 pin and 2 pin and meet filter capacitor C13,5 pin connect+5V, and 4 pin are divided into two-way, lead up to resistance R 27 incoming signal I5, another road is by resistance R 26 ground connection.Generate incoming signal I1, I2, I3, I4, I5 by signal input change-over circuit.3, buffer input signal unit: buffer input signal part by 74HC14 reverse buffer N6 and 74HC244 in the same way energy disperser N7 form.Incoming signal I1, I2, I3, I4, I5 connect 1,3,5,7,9,11 pin of reverse buffer N6 respectively, 7 pin ground connection, 14 pin connect+5V, 13 pin connect 12 pin of N7,2,4,6,8 ' 10,12 pin connect 2,4,6,8,11,13 pin of energy disperser N7 in the same way respectively, and 3,5,15,17 pin are unsettled, 1,19,10 pin ground connection, 20 pin connect+5V, and 18,16,14,12,9,7 pin are output signal M1, M2, M3, M4, M5, M6 respectively.
4, control unit: the core of control part is AT89C52 micro controller system N8, and ATC89C52 micro controller system N8 external circuit mainly contains reset circuit and oscillating circuit.Oscillating circuit is made up of passive crystal oscillator G (AQL-24MHZ) and capacitor C 14, C15, and the two ends of crystal oscillator connect 18,19 pin of micro controller system N8 respectively, and an end and the crystal oscillator G of capacitor C 14, C15 join other end ground connection.Forward serial connection diode VD13 between 1,8 pin of integrated circuit N9 (IMP813L) in the reset circuit, 2 pin connect+5V, 3 pin ground connection, 4 pin connect+5V by resistance R 39, and 5 pin are unsettled, and 6 pin connect 4 pin of micro controller system N8, and 7 pin connect reset terminal 9 pin of micro controller system N8.Micro controller system N8's is 1,2,3,5,15,16,17,10,11,29,30,25,26,27,28,32,33,34,35,36,37,38,39 all unsettled, 4 pin connect 6 pin of integrated circuit N9,6,7,8,13,14,12 meet signal M1, M2, M3, M4, M5, M6 respectively, 9 pin connect 7 pin of integrated circuit N9,18,19 pin of micro controller system N8 connect the two ends of crystal oscillator G, 31 pin connect+5V by resistance R 40,40 pin connect+5V, 20 pin ground connection, 21,22,23,24 pin are output signal O1, O2, O3, O4 respectively.The AT89C52 micro controller system is controlled by the in-to-in software program, has simple to operately, is convenient to the adjustment of function again, more helps the protection of product.
5, output signal unit: segment signal output mainly is made up of energy disperser N10 (74HC240) and driving two parts.3 of energy disperser N10,5,7,9,11,13,15,17 pin are unsettled, 1,10,19 pin ground connection, 20 pin connect+5V, 2,4,6,8 meet signal O1 respectively, O2, O3, O4, pin 12,14,16,18 output signals connect identical driving circuit, drive at this output signal of introducing 18 pin in detail, the output of 18 pin is divided into two-way, lead up to resistance R 41 ground connection, connect the base stage of VMOS pipe V1 (IRF840) behind the series resistor R28 of another road, grounded emitter, collecting electrode is divided into two-way, behind one tunnel reversal connection light-emitting diode HL1, connects+5V after being connected in series a resistance R 32, another road connects 2 pin of solid-state relay K1,1 pin of solid-state relay K1 connects+5V by resistance R 33,3 of solid-state relay K1,4 terminating diode VD5, and the positive pole of 3 termination VD5,3 of solid-state relay K1 rectifies behind serial connection diode VD6 as negative terminal, and 4 ends of solid-state relay K1 are connected with the outside as anode.Be added with light-emitting diode at drive part, whether whether action normal and that carry out is correct for each road drive signal when being convenient to simulative debugging; Output signal links to each other with the outside by the solid-state relay of light lotus root formula, plays the effect that forceful electric power and light current are isolated.
Referring to Fig. 3, Fig. 4; the safety monitoring device radical function is vigilant and communtation protection; the realization of its function is to detect and timer counter by the impulse singla that the DF-16 speed sensor is sent here, determines whether to enter vigilant function or communtation protection function according to timing ga(u)g (TG) numerical value.Vigilant function is at different time, finishes different actions according to different external echos: the communtation protection function is by the detection to the locomotive running state position, determines whether to carry out a series of protection actions according to its detected value.In order to realize its function, and consider its financial cost, has T0 so adopt, T1, three timing modes of T2, and 80C52 micro controller system that can the automatic loading function when T2 timer counting overflows, for the program readability and be convenient to revise, thereby to adopt most basic programming mode be that its function realized in assembly language.
Referring to Fig. 2; during actual the use; the explanation that electrical connector plug is pressed in the accompanying drawing 2 connects, and 1,2 connect the DC110V anode, and 8 connect the pulse output end of speed sensor; 10,11 connect indicator lamp; 12,13 connect buzzer phone, 15, the 16 car shutdown valves of meeting sb. at the airport, 17, the 18 car unloadings of meeting sb. at the airport; 19,20 connect the 110V negative terminal, 4,5,6,7 by the external security switch connect release respectively, reply, forward direction, backward signal.Wherein tachogen substitutes with signal source, and output amplitude is that 10V, dutycycle are 50% square wave.The signal source impulse rate greater than 120Hz (speed of corresponding locomotive is greater than 6krn/h) condition under; allow driver's acknowledge signal continue to disconnect 60s earlier; at this moment warning indicator lamp HL1 is bright; allow driver's acknowledge signal continue to disconnect 6s again; at this moment locomotive loading indicator lamp HL3 extinguishes; then allow the driver should beat signal with a stick again and continue to disconnect 2s; at this moment locomotive stop-working protection indicator lamp HL2 is bright; this moment, warning indicator lamp HL1 and stop-working protection indicator lamp HL2 were bright; locomotive is in locking, and any time is connected the then system reset of driver's acknowledge signal in the 68s before this.In like manner allow driver's acknowledge signal continue to connect 60s earlier; at this moment warning indicator lamp HL1 is bright; allow driver's acknowledge signal continue to connect 6s again; at this moment locomotive loading indicator lamp HL3 extinguishes; then allow driver's acknowledge signal continue to connect 2s again, at this moment locomotive stop-working protection indicator lamp HL2 is bright, and this moment, warning indicator lamp HL1 and stop-working protection indicator lamp HL2 were bright; locomotive is in locking, and any time disconnects the then system reset of driver's acknowledge signal in the 68s before this.Can return under the zero-bit situation at the locomotive throttle handle after the locomotive locking, reset by the reset switch on the panel.The signal source impulse rate during less than 120Hz (corresponding locomotive speed is less than 6km/h) vigilant function inoperative.Greater than 12Hz (corresponding locomotive speed is greater than 0.5km/h), this device is to the locomotive communtation protection at the signal source impulse rate.This moment if the locomotive reversing handle from forward direction operating mode position (or back to operating mode position) return parking stall or opposite operating mode position, the airborne indicator lamp HL3 of locomotive extinguishes, locomotive warning indicator lamp HL1 is bright simultaneously, locomotive is in locking, after reversing handle can being returned to original direction position after the locomotive locking, or can return under the situation of zero-bit at locomotive throttle handle and directional lever, reset by the reset switch on the panel.
The present invention has vigilant function and locomotive communtation protection function, below its function is described in further detail:
1, vigilant function: when locomotive is in running state, locomotive running speed begins driver's acknowledge signal is monitored after surpassing 6km/h, if driver's acknowledge signal is disconnected after disconnecting 60s, then output alarm signal drives buzzer call, 6s still disconnects later on and then exports the locomotive unloader signal, cut off excitation and make the locomotive unloading, postpone 2s again and still disconnect and then export locomotive parking control signal, drive the brake system action locomotive is stopped.Same then output alarm signal drives buzzer call if driver's acknowledge signal does not disconnect after connecting 60s, and 6s does not still turn-off later on and then exports the locomotive unloader signal, cuts off excitation and makes the locomotive unloading; Postpone 2s again and still do not turn-off and then export locomotive parking control signal, drive the brake system action locomotive is stopped.When locomotive is in test mode, locomotive speed is zero, governor handle is placed 0, click the reset button on this device, the vigilant fender guard of locomotive enters the function test state, begins driver's acknowledge signal is monitored, if driver's acknowledge signal is disconnected after disconnecting 60s, then output alarm signal drives buzzer call, and 6s still disconnects later on and then exports the locomotive unloader signal, cuts off excitation and makes the locomotive unloading; Postpone 2s again and still disconnect and then export locomotive parking control signal, drive the brake system action.Same if driver's acknowledge signal is connected in the 68s not to be disconnected, same phenomenon can take place.
2, locomotive communtation protection function: when locomotive is in running state, during the locomotive commutation, if locomotive speed is greater than 0.5km/h; then export locomotive off loading control signal; cut off excitation and make the locomotive unloading, output alarm signal drives buzzer call simultaneously, is zero up to locomotive speed.When locomotive is in test mode, when locomotive speed is zero, governor handle is placed 0, click the reset button on this device, locomotive safety monitoring device enters the function test state, begin the commutation action is monitored, when the operative orientation that change reversing handle this moment was inverse state, then device output locomotive off loading control signal cut off excitation and makes the locomotive unloading, output alarm signal drives buzzer call simultaneously, resets up to safety monitoring device.
External interface of the present invention adopts the aviation plug of 20 cores, so that externally connect.The present invention adopts micro controller system to carry out Digital Control, and is both convenient simple and direct, is convenient to again maintain secrecy.The present invention for can make this device can be in electromagnetic environment normal operation, adopt metal case shielding and filtering to reduce of the influence of this device on the one hand to other device, on the other hand at the design aspect that installs internal circuit, adopt the large tracts of land floor file to isolate, and will simulate ground and digitally separate, hardware anti-interference technology such as filtering, photoelectricity isolation, ground connection suppress the influence of external interference source, have reached disturbance rejection effect preferably, have guaranteed the safety monitoring device normal operation.
Claims (3)
1, a kind of locomotive safety monitoring device, it is characterized in that: comprise control unit, the incoming signal converting unit is connected with control unit by the buffer input signal unit, the output signal unit is connected with control unit, described control unit comprises micro controller system N8, the external circuit of micro controller system N8 comprises reset circuit and oscillating circuit, described oscillating circuit comprises passive crystal oscillator G and capacitor C 14, capacitor C 15, the two ends of passive crystal oscillator G are connected with micro controller system N8 respectively, capacitor C 14, one end of capacitor C 15 joins with passive crystal oscillator G respectively, other end ground connection, integrated circuit N9 forward serial connection diode VD13 in the reset circuit, and be connected with the reset terminal of micro controller system N8, described incoming signal converting unit comprises impulse singla and the release that speed sensor transmits, reply, forward direction, the input change-over circuit of backward signal, impulse singla meets light lotus root isolator N5 after by current-limiting resistance R25, light lotus root isolator N5 also is connected with the negative pole of impulse singla, between impulse singla and light lotus root isolator N5 and meet filter capacitor C13, light lotus root isolator N5 tells two-way by resistance, the resistance R 27 of leading up to is imported change over signal I5, another road is by resistance R 26 ground connection, release, reply, forward direction, the input change-over circuit of backward signal is identical circuit, described buffer input signal unit comprises reverse buffer N6 and energy disperser N7 in the same way, the incoming signal that reverse buffer N6 one end and incoming signal converting unit generate joins, the end of energy disperser N7 is connected with reverse buffer N6 in the same way, the other end is connected with micro controller system N8, described output signal unit comprises energy disperser N10 and drive part, energy disperser N10 is connected with drive part with micro controller system N8 respectively, the output signal that energy disperser N10 sends connects identical driving circuit, driving circuit comprises the VMOS pipe, the base stage and the output signal of VMOS pipe join, grounded emitter, collecting electrode is divided into two-way, one tunnel reversal connection light-emitting diode also is connected with+5V, and another road connects solid-state relay.
2, locomotive safety monitoring device according to claim 1, it is characterized in that: the input change-over circuit of described unlocking signal comprises resistance R 1, unlocking signal is by after the resistance R 1, forward serial connection diode VD1, connecting resistance R5 again, reversal connection stabilivolt V5 then, be connected on the light lotus root isolator N1, light lotus root isolator N1 also is connected with the negative terminal of unlocking signal, simultaneously between the negative terminal of diode VD1 is born with unlocking signal and connect capacitor C 1, between the negative terminal of stabilivolt V5 and unlocking signal are negative and connecting resistance R9 and capacitor C 2, light lotus root isolator N1 tells two-way by resistance, one tunnel ground connection, the signal I1 after another road input conversion, between incoming signal I1 and ground and meet filter capacitor C9, described replying, forward direction, backward signal green phase input change-over circuit together is incoming signal I2 respectively, signal I3, signal I4.
3, locomotive safety monitoring device according to claim 2, it is characterized in that: comprise power unit, power unit comprises the 110V power supply that locomotive provides, at the positive and negative indirect pizo-resistance RV of 110V, meet electrolytic condenser C16 again, the positive and negative terminal of electrolytic condenser C16 is connected on the end of power module N11 and power module N12 respectively, the other end of power module N11 and power module N12 meets electrolytic condenser C17 and electrolytic condenser C18 respectively, simultaneously on power module N11 and power module N12 respectively and meet filter capacitor C19 and filter capacitor C20, and on power module N11 serial connection choke coil L1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02114672 CN1282573C (en) | 2002-07-11 | 2002-07-11 | Locomotive safety monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02114672 CN1282573C (en) | 2002-07-11 | 2002-07-11 | Locomotive safety monitoring device |
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| CN1467120A CN1467120A (en) | 2004-01-14 |
| CN1282573C true CN1282573C (en) | 2006-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02114672 Expired - Fee Related CN1282573C (en) | 2002-07-11 | 2002-07-11 | Locomotive safety monitoring device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104249741A (en) * | 2013-06-26 | 2014-12-31 | 唐山铁通运力设备有限公司 | Car-driving linkage safety protection system for railroad hauling car |
| CN104828113A (en) * | 2015-04-30 | 2015-08-12 | 中国北车集团大连机车车辆有限公司 | Control method of locomotive driver alerting device |
| CN109664901B (en) * | 2017-10-17 | 2020-10-16 | 株洲中车时代电气股份有限公司 | Vigilant braking control method and system for train |
| CN114275006A (en) * | 2021-11-16 | 2022-04-05 | 昆明铁路局集团科学技术研究所 | Locomotive signal decoding equipment and method |
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Granted publication date: 20061101 Termination date: 20110711 |