CN2030566U - Microcomputer-controlled general locomotive signal equipment - Google Patents

Abstract

The utility model relates to a device for controlling the railroad locomotive signals by using a microcomputer. When the locomotive runs on the section of various locomotive signal systems, the utility model can reflect the display status of the ground signal device. The utility model is a universal type locomotive signal device. Various systems of locomotive signals refer to frequency shift systems, alternate current counting systems, polar impulse systems and dual-frequency point systems in China. The utility model comprises a set of continuous receiving devices, a set of point mode receiving devices, a control device, a cab signal machine, etc. When a locomotive runs from one system section to another system section, the utility model can be switched automatically with no need of manpower switching.

Description

Microcomputer-controlled general locomotive signal equipment

The present invention is mainly used in locomotive in railway line various systems whens operation of automatically closing up, and can both reflect in time on the locomotive that ground passes through the show state of signal or home signal.If double frequency intermitent type automatic train stop device is housed, then also reflect its situation.

In the existing cab signaling equipment, standards such as ac counting code system, frequency shift system, polarity frequency pulse system and double frequency point type are arranged.Because they automatically close up with ground and match, and therefore, could reflect the show state of ground signal when they can only move in the section of corresponding standard.

In recent years, because locomotive uses at long routing, the section of a locomotive running gear often will run into the cab signal standard of two or three different systems.On a locomotive, to install two simultaneously, the cab signaling equipment of three kind of standard is impossible, in addition, when locomotive enters into another kind of standard section by a kind of standard section, must carry out manual switching by the driver, this mode is difficult to accomplish, thereby just can not adopts.At present, the equipment that does not all have unified cab signal standard both at home and abroad.

The present invention is exactly for solving a kind of purpose Cab Signal equipment that adopts MICROCOMPUTER PROCESSING and control, has automatic switching function that this key problem in technology is developed.

After locomotive is loaded onto this equipment, no matter locomotive operation can both obtain the corresponding signal aspect and indication of as prescribed at the automatic block district of any standard on locomotive.

The present invention sends the position and the mode difference of information in order to consider its ground of automatic block district, and consider information receiving device and the cab signal mechanism that utilizes existing installation, therefore, the present invention utilizes the message pick-up sensor of two kinds of message pick-up sensing equipments of ac counting system and double frequency point type system as this equipment.

The present invention distinguishes the information that ground sends various standards effectively in order to consider, the mode that has adopted hardware device and software to combine is distinguished the feature of various information, and has automatic shifting function.

The present invention has designed a safe and reliable hardware of cover and an application software in order to realize the decoding of various different systems, different information.

The present invention is in order to consider that cab signaling equipment can failure to the safe side when the element et out of order, so its characteristics are arranged when hardware and software designs.The design of dynamic contactless output driver and other software is for example arranged.

The present invention had both had micro-processor controlled advantage, had the advantage that multiple standard is general and automatically switch again, was a kind of later-model cab signaling equipment.

Because the present invention adopts general-duty cab signaling equipments of micro-processor controlled, various standard section, so be referred to as system controlled by computer purpose Cab Signal equipment.

Principle of the invention block diagram as shown in Figure 1, (1) is the continuous type cab signaling information receiving device among Fig. 1.(2), (3), (4) are respectively filtering, the amplifying circuit that frequency shift system cab signal, ac counting system cab signal and the utmost point are made cab signal or other standard cab signal frequently.(5) and (12) be microprocessor interface circuit, the interface of this equipment is Z80PIO.(6) be the A/D change-over circuit.(7) be micro controller system, this equipment adopts the CPU of Z80.(8) be dynamic security type contactless actuator.(9) be cab signal lamp mechanism.(10) be double frequency intermittent type cab signaling information receiving device.(11) be double frequency point type oscillator.

Now Fig. 1 is described as follows:

(1) the continuous type cab signaling reception facilities adopts locomotive by the 65 type receiving coils of loading onto.

(2) double frequency intermittent type cab signaling reception facilities adopts double frequency point type receiving coil, and its resonant frequency is 1200H _ZAnd 1700H _Z

(3) micro controller system adopts the Z80 system of CMOS, and it has the advantage of power saving, strong anti-interference performance.

(4) pulse of 2 megahertzes of the crystal oscillator generation of double frequency point type oscillator (11) employing microcomputer obtains the very high oscillation frequency of degree of stability behind the counter timer frequency division, and its oscillation frequency is 1200H _ZAnd 1700H _Z

(5) filter amplification circuit adopts lower powered cmos operational amplifier to constitute source filter and amplifier.Power supply employing ± the 12V of op amp is by the 48V power source conversion of locomotive supply.

(6) dynamic security type contactless actuator (8) is fault---the vital circuit that adopts transistor to constitute, as long as just can light a lamp by the drive signal lamp when input end is supplied with DC pulse incessantly.This circuit Applicable scope is extremely wide, and it is other patent application project, is still herein and utilizes it.

(7) signaling gear (9) adopts the signaling gear of using on the existing locomotive, does not need to change in addition.

(8) because the range ability of various continous way information is very big, influence each other is difficult to utilize hardware to distinguish, and therefore, the present invention adopts hardware---and software combines, the standard that has constituted high reliability is distinguished each road system, thereby overcomes mutual interference.

Continuous type cab signaling can receive the information of three kinds of different systems as shown in Figure 2 respectively.(13) among Fig. 2 are the information that the existing frequency shift system cab signal of China receives, and this information is 550HZ, 650HZ, 750HZ and 850HZ; Frequency deviation is 55HZ; The low-frequency information frequency is 11HZ, 15HZ, 20HZ, 26HZ.(14) be the information that the existing ac counting system cab signal of China receives, its carrier frequency is 50HZ and 25HZ, and its information is the pulse number decision that sends with one-period.(15) be the information that China's existing polarity frequency pulse system cab signal receives, its information is with the polarity of pulse and sends two kinds of combined forming of frequency.

When locomotive operation at shift frequency standard section, cab signaling equipment receives the shift frequency information shown in Fig. 2 (13) on the steel rail line continuously by reception facilities ((1) among Fig. 1), this information is carried out filtering by (2), (3), (4) of Fig. 1 and is amplified, and its schematic circuit is shown in (17), (18) of Fig. 3, (19), (24), (25), (28), (29).Because the carrier frequency frequency of shift frequency is from 495HZ to 905HZ, it can be by the high-pass filter of (18), its passband is more than 400HZ, and by the following low-pass filter of 1000HZ, just can obtain the amplification of hundred times like this at the input end of zero comparator (20), make zero comparator (20) action, just can obtain the square wave of shift frequency at its mouth.Because bandpass filter (25), its passband is 45～55HZ, therefore, just locates not output at mouth (27), in like manner at (31) mouth also not output.The shift frequency square wave just becomes the shift frequency square wave by isolating transformer (21) and emitter follower (22).Emitter follower (22) plays the effect of thresholding.The mouth of emitter follower (23) is delivered to micro controller system ((7) among Fig. 1) through the PIO interface of Fig. 1 (5), automatically changes the shift frequency mouth over to after microcomputer is judged.Micro controller system is handled shift frequency information, exports pulse train after translating the low-frequency information that is received, and just can light the demonstration of engine man's indicator by designing requirement through the dynamic security type contactless actuator of Fig. 1 (8).

When locomotive enters ac counting system section by the section of shift frequency standard, cab signaling equipment receives the information shown in Fig. 2 (14) by reception facilities (among Fig. 1 (1)), this information is delivered to A/D conversion ((6) among Fig. 1) through (24), (25), (26) of Fig. 3, through the A/D conversion analog signal is become digital signal and deliver to micro controller system, being automatically brought to the mouth of reception ac counting and the process software of ac counting after microcomputer is judged handles, translate the pulse count of reception, behind actuator ((8) among Fig. 1), light corresponding signal aspect and indication.

In like manner, when receiving polarity frequency pulse information, by (4) among Fig. 1, also be (28), (29), (30) among Fig. 3, by (31) the output polarity frequency pulse information among Fig. 3.This information becomes numeral by A/D converter ((6) among Fig. 1), translates information rear drive signal aspect and indication through micro controller system.

When locomotive operation at non-automatic block district, ground does not send continuous message, cab signal is put white lamp.The section of double frequency point type device is housed through ground when train, ground-surface pair of information point transmission information on locomotive, locomotive is by point type receiving coil ((10) among Fig. 1), oscillator output is reduced, cut off amplifier output, that translate reception through microcomputer is 1200HZ or 1700HZ, and which kind of frequency what translate output for the second time after 10 meters of the travelings is, microcomputer just can translate the information of reception to twice information combination receiving, lights the signal aspect and indication of regulation.

Fig. 4 is the schematic circuit of Fig. 1 (10), (11), (12).(32) among Fig. 4 are the frequency sources by the counter timer output of micro controller system, just become the square wave of 1200HZ or 1700HZ through double D trigger frequency division (33), produce the frequency of a 1200HZ and 1700HZ with resonant groove path (38), (37) through active band-pass filter (35) and power amplifier (36), through isolating transformer (40) but and after the repeated trigger monostable (42) deliver to (12) among interface circuit such as Fig. 1, judge that through microcomputer the back determines that no signal exports.When the point type reception facilities on the locomotive ((37) among Fig. 4) during through the ground induction coil, make oscillator on the locomotive (11) off resonance, output signal just reduces.Delivery port ((42) among Fig. 4) does not just transport, and translates the information of reception after microcomputer is judged, the driving machine engine man's indicator is lit a lamp.

The present invention tests through the desk research of time more than 2 years, and makes the utility function model machine.The on probation of it shows that the key technical indexes that system controlled by computer purpose Cab Signal equipment is realized is as follows:

1. purpose Cab Signal can receive existing multiple continous way information of China and double frequency point information respectively, lights a lamp by the regulation drive signal machine of existing information characteristics.

2. the reception facilities of continuous type cab signaling only adopts the induction coil of one 65 type.The intermittent type cab signaling reception facilities also reception facilities with existing double frequency point type is identical.

3. automatic switching mode is all adopted in conversion between the various standards of continuous type cab signaling and the conversion between continuous type cab signaling and the intermittent type cab signaling.

4. the action sensitivity of cab signal all satisfies the sensitivity of existing standard, and promptly the frequency shift system cab signal is not less than 22.2 milliamperes at track input short current effective value; Ac counting system effective value is not less than 1.2 peaces; The peak current of polarity frequency system is not less than 1.4 ampere-hour purpose Cab Signal all can action message.

5. the strain time of cab signal was no longer than 5 seconds; Locomotive all need pass through white lamp by a kind of system conversion during to another kind of standard, and its strain time is not more than 9～10 seconds.

6. only under the situation that does not have continous way information (being that locomotive is put white lamp) could receive point information, otherwise point information is invalid.

7. the power supply of cab signaling equipment adopts 48 volts and 5 volts nickel-cadmium cells of electrical locomotive power.But this battery charge is continuous application more than 50 hours once.

8. the microcomputer purpose Cab Signal is a dynamic working mode, and failure to the safe side all during any element fault meets fault---security doctrine.

9. the environment for use temperature becomes with the product element material, preferably can guarantee at-20 ℃---work in+60 ℃.

Claims (1)

1, system controlled by computer purpose Cab Signal equipment, form by information receiving device, messaging device and output display unit, it is characterized in that: shift frequency information is through the coil of wire (16), amplifier (17), high-pass filter (18), low-pass filter (19), zero comparator (20), isolating transformer (21), emitter follower (22) are connected to micro controller system (7) by mouth (23); The utmost point frequently signal through coil (16), amplifier (24), bandpass filter (25), isolating transformer (26), be connected to micro controller system (7) by mouth (27); The ac counting signal is through the coil of wire (16), amplifier (28), bandpass filter (29), isolating transformer (30), be connected to micro controller system (7) by mouth (31); Double frequency point type signal is through the coil of wire (37), cond (38), amplifier (39), isolating transformer (40), univibrator (41), be connected to micro controller system (7) by mouth (42); More than the information of each information after micro controller system is handled deliver to dynamic security type contactless actuator (8) and carry out power amplifier and go to drive signal mechanism (9) to light a lamp.

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