CN2124172U - Wind pressure monitor for train trail - Google Patents

Abstract

The utility model belongs to a train braking system monitoring assembly, which is mainly composed of a baroceptor, a transmitting circuit and a language processor. When the pressure of the air pipe of the tail of a train reaches a specified remission value or braking initial value, the wireless transmitting circuit of the utility model shoots out the signals of radio recognition and identification modulated by the speech sound of the train number which is recorded before hand. After the signals are received, drivers can distinguish whether the wind pressure is normal, the air pipe is penetrating and the train is intact. The utility model has the advantages of simple structure, cheap price and reliable work, and the monitor signals is convenient for recognition and memory. The monitoring assembly is arranged on the tail of the train, and can replace the manager of the train to automatically supervise and report wind pressure; so the guard of the train is cancelled.

Description

Wind pressure monitor for train trail

The utility model belongs to the train braking system monitoring equipment.Its architectural feature mainly comprises baroceptor, radio transmitter and language processor.

Document CN87215769U discloses a kind of easy train tail wind pressure monitoring device, and the monitor signal when it can be finished train tail wind pressure reached two utilization values is transferred to driver's function by wireless channel.It mainly is made up of institutes such as baroceptor, wireless transmission and acceptor circuits, and for simplifying the identification signal of the general coding and decoding mode that adopts in the radio communication, its identification signal of distinguishing different trains has adopted the music or the language set that have solidified in blocks.Its weak point is that this kind identification signal can not be set up certain positive connection with this train, must live a large amount of different music or speech signals by driver's hypermnesia, thereby uses inconvenience and identification error easily takes place.

The purpose of this utility model is to avoid the weak point in the above-mentioned prior art, and a kind of new simple and easy cheap type tail wind pressure monitor product is provided, it has the brief identification signal that can build up a positive connection with each train, be convenient to remember, so that the driver discerns the train tail wind pressure monitor signal concisely, like clockwork.

The foregoing invention purpose can realize by following technical measures:

This kind train tail wind pressure monitor is made up of baroceptor, connection pipe and interface thereof, radio transmitter and antenna, identification signal circuit, control circuit, power supply and machine box, it is characterized in that the identification signal circuit is language processor and the language memory device that is attached thereto, the voice output of this language processor terminates at the radio transmitter audio frequency and goes into end, starts language processor by baroceptor or control circuit and sends the speech recognition signal.

Above-mentioned language processor is the integrated circuit that includes voice signal sampling, mould/number conversion, D/A switch, internal logic control unit.Above-mentioned language memory device is made up of dynamic memory or static memory or static memory integrated circuit.

Be provided with the end of train monitor of above-mentioned language processor and continuous memory device thereof, can be before dispatching a car this train number of typing number or brief voice signal such as engine number or name driver easily, when making the last vehicle of train air duct pressure, the driver control brake reaches two utilization values---when alleviation value (for example getting 480 kPas) or braking initial value (for example getting 460 kPas), the baroceptor output signal, this signal promptly starts (also can start by controller) language processor, from the language memory device, take out the voice signal of typing before dispatching a car, be passed to the radio transmitter voice modulation and go into end, be emitted to public radio telephone of headstock or ad hoc wireless receiver by wireless channel, the driver can hear that just above-mentioned and this train establishes the signal of positive connection, this speech-like signal is brief, understand, be convenient to memory and identification.The driver can judge after hearing this speech monitor signal: the identification signal that 1. is this train; 2. train is complete; 3. the train braking airduct connects (not being closed as angle cock); 4. tail wind pressure has reached required value.

Above-mentioned language processor preferably adopts super large-scale integration UM5101 or UM5100 or YYH16 or YYH40 or YYH402 or YYH403 or L8011 or T6668 or HD61885 or M50800-03SP or SVM9300 or SR61 or SR360 or the SR1024 etc. that use in a large number; Also can adopt other language processor that newly appears on the market and memory device.

Above-mentioned control circuit has the functions such as emission of control radio transmitter, can be switch circuit or relay circuit or logic gates, also can be their combination.For power saving with reduce fault rate, control circuit preferably uses the integrated circuit of low-power consumption, for example cmos logic gate circuit as far as possible.

Because of this monitor is the automatic transmitter of unmanned, for protecting its battery feed, do not make its overdischarge and damage, one voltage amplitude discrimination circuit or voltage comparator circuit also can be set in its control circuit, when battery tension reaches or during near its final voltage, voltage amplitude discrimination circuit or voltage comparator circuit are that the may command radio transmitter stops emission; Perhaps also can before stopping to launch, start a bit of warning signal of emission earlier.

Should compare with novel and aforesaid prior art, have following advantage: this voice signal and this train establish necessary relation.Therefore, be convenient to memory and identification, this signal typing and again typing make things convenient for, be convenient to actual use; This monitor is simple in structure, and the signal busy channel time is short, also for to have brought possibility and economy with other signal common channel of train and reception facilities.This monitor is installed on last vehicle of train and can replaces the vehicle commander to supervise the newspaper blast automatically, also can be used as the alternate device of cancellation behind the guard's van.

The accompanying drawing drawing is described as follows:

Fig. 1 is the circuit block diagram of an embodiment of this monitor.

Fig. 2 is the electrical schematic diagram of another embodiment of this monitor.

Fig. 3 is the schematic circuit diagram of another embodiment of this monitor.

The utility model is described in further detail below in conjunction with accompanying drawing:

Among Fig. 1,1 is the baroceptor circuit part, and 2 is control circuit, and 3 is language processor, and 4 is the language memory device, and 5 is radio transmitter, and 6 is antenna, and 7 is power supply, and 6 are wrapped on the connection pipe, and other all is contained in the minicomputer box; Link to each other with last vehicle of train angle cock flexible pipe by removable interface with the connection pipe that sensor communicates.Reach the utilization value when 1, promptly start 2,2 and start 3 input speech signals again and control 5 emissions simultaneously, this radio signal through the voice modulation promptly is emitted in the driver's cab by antenna 6, plays back from public station vehicle radio phone.

Among Fig. 2, the same Fig. 1 of square frame 1,2,5,6 division names, language processor has adopted super large-scale integration YYH16, and the language memory device has adopted dynamic integrated circuit memory 41256.Press the recording button that links to each other with 3 pin of YYH16, say a recognition of speech signals (for example saying: " 1378 times tail wind pressure is normal ") facing to microphone M, this voice signal promptly from the 9 pin input of YYH16, after sampling, mould/number conversion become digital signal, deposits memory device 41256 in after amplifying.Adjusting inductance, capacitance on 26,27 pin of YYH16 can shorten and record and play the sound time.When baroceptor 1 reaches the utilization value, the positive pulse signal of its output promptly triggers YYH16, start playback, the recognition of speech signals of being recorded is promptly from its 10 pin output, deliver to the voice modulation of radio transmitter 5 and go into end, 6 pin of YYH16 are exported high level simultaneously during this playback, start-up control circuit 2 controls 5 emissions.

The most preferred embodiment of this monitor is promptly as Fig. 3.Among Fig. 3, square frame 5 is a radio transmitter, and it can be general-duty shortwave or ultrashort amplitude modulation or various radio transmitters such as frequency modulation or phase modulation, preferably adopts the transmission circuit of general micro radio telephone set.Square frame 6 is an emitting antenna, can be wrapped on the connection pipe of monitor and last vehicle of train airduct, also can be placed on connection pipe inside or outside.The language processor of present embodiment adopts another kind of super large-scale integration UM5101, and the language memory device adopts 64k dynamic memory 4164.Turn 10 pin of UM5101 and the resistance value between 11 pin down, can obtain record or playing time about 1.5 seconds, go up brief signal for record, for example only " 1378 " (promptly omit aforesaid " inferior tail wind pressure is normal ", driver's gained quantity of information is constant) gone up in record.K is the micro-switch of the mechanical baroceptor of bellows among the figure, and when the last vehicle of train air duct pressure whenever reached a utilization value, the contact of k a sound just took place closes conversion.Baroceptor is by cond (C ₁, C ₂) connecting the trigger terminal (6 pin) of language processor (UM5101), the impulse singla that the contact conversion of k is produced triggers and starts the UM5101 playback; For having quick repeated trigger function, the parallel connection of cond two ends bleeder resistance (R ₁, R ₂).Baroceptor is not limited only to adopt the bellows mechanical type, also can adopt resistance-strain type, or various sensors such as variable reactance formula or Silicon pressure formula.

In order to reduce the volume and weight of this monitor, power supply has been selected the power supply of low capacity cadmium-nickel storage battery for use, and can reach more than ten hour between a towing area of train, so circuit has been selected the CMOS integrated circuit of low-power consumption as far as possible for use; And when non-emission by the most of supply disconnecton of control circuit with radio transmitter.Among Fig. 3, control circuit is by transistor BG ₁, BG ₂, BG ₃, NAND gate group CH4011 and timer 7555 form.Two groups of CMOS inverse gate A and B among the CH4011 have constituted the voltage amplitude discrimination circuit, and when battery tension was reduced to 8.3 volts of left and right sides, the B output low level was closed and BG another group NAND gate C of CH4011 ₃End, cut off the power supply F of the big radio transmitter of power consumption, with the protection storage battery.Also voltage available comparator (for example compositions such as amplifier LM324 or LM339) replaces above-mentioned voltage amplitude discriminator.

Also be provided with the timer-controlled self-inspection signal circuit of this device in the control circuit of Fig. 3 embodiment.It is mainly by a CMOS integrated timer 7555(for example CH7555,5G7555, ICL7555) institute forms.7555 are connected into multi-resonant oscillating circuit, are connected with the resistance R of determining the output signal dutycycle between its TH and DIS two-terminal ₄, R ₅And diode D ₁Above-mentioned timer also can be made up of other astable circuit.7555 output (exported for 3 seconds for example per 90 seconds) positive pulses regularly, the cond (C of the trigger terminal (6 pin) by being connected to language processor UM5101 ₃), starting the UM5101 playback, these cond two ends also are parallel with bleeder resistance (R ₃).The positive pulse of 7555 outputs is by playback sound time control terminal 12 pin of another group inverse gate D control UM5101 of CH4011, make timing wave playback only once (for example: " 1378 ") like this, sensor k triggers then twice of playback (for example: " 1378,1378 ").So distinguish: one for the timer-controlled self-inspection signal, be for two monitor signal.If the timer-controlled self-inspection signal that the driver can only receive, two monitor signals after can not receiving braking or alleviating operation show that then intact the and train air main of monitor does not connect obstacles such as (for example have angle cock) being closed, in order in time preventing accident.In addition, also be provided with test button AN among Fig. 3, so that be used as the manual self check of monitor.

In the busy railway section of transportation, for reducing the phase mutual interference between train, the cycle of timing wave can be extended, or separate channel frequency, also can cancel timing wave.For frequently use section to reduce the number of times of monitor signal busy channel in the long steep grade brake system, also counting machine and time meter can be set in control circuit, for example behind startup playback counting three times, promptly start the time meter timing, in this timing time, close radio transmitter, the time meter timing recovers open transmission circuit after a few minutes again, and this time meter can adopt monostable circuit etc.Maximum busy channels of (a few minutes) monitor signal three times (each about 1.5 seconds) in each time-count cycle like this, and the monitoring purpose that can reach train braking system for these three times.

Claims (10)

1, a kind of train tail wind pressure monitor, form by baroceptor, connection pipe and interface thereof, radio transmitter and antenna, identification signal circuit, control circuit, power supply and machine box, it is characterized in that the identification signal circuit is Language Processing and the language memory device that is attached thereto, the voice output of this language processor terminates at the radio transmitter audio frequency and goes into end, starts language processor by baroceptor or control circuit and sends the speech recognition signal.

2, monitor according to claim 1 is characterized in that language processor is the integrated circuit that includes voice signal sampling, mould/number conversion, D/A switch, internal logic control unit.

3, monitor according to claim 2 is characterized in that the language memory device is made up of dynamic memory or static memory integrated circuit.

4, monitor according to claim 3 is characterized in that control circuit is made up of switch circuit or relay circuit or logic gates, perhaps by their combinations and form.

5, monitor according to claim 4 is characterized in that also being provided with in the control circuit power source voltage amplitude discrimination circuit or the voltage comparator circuit of controlling radio transmitter.

6,, it is characterized in that language processor is made up of integrated circuit UM5101 or UM5100 or YYH16 or YYH402 or YYH403 or L8011 or T6668 or HD61885 or M50800-03SP or SVM9300 or SR61 or SR360 or SR1024 according to claim 4 or 5 described monitors.

7, monitor according to claim 6 is characterized in that baroceptor or control circuit connect language processor playback trigger terminal, cond (C by cond ₁, C ₂, C ₃) two ends be parallel with bleeder resistance (R ₁, R ₂, R ₃).

8, monitor according to claim 7 is characterized in that also being provided with in the control circuit timer-controlled self-inspection signal circuit, and it is made up of a CMOS integrated timer 7555, is connected with the resistance R of determining signal dutyfactor between its TH and DIS terminal ₄, R ₅And diode D ₁

9, monitor according to claim 5 is characterized in that said voltage amplitude discrimination circuit is made of two CMOS inverse gates (A, B) circuit.

10, monitor according to claim 7 is characterized in that being provided with in the control circuit counting machine and time meter.

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