Railway wireless train dispatching command voice broadcast circuit

Abstract

The invention relates to a railway wireless train dispatching command voice broadcast circuit, which is characterized in that a processor chip is respectively connected with a voice synthesis circuit, an audio processing circuit and an audio power amplifier circuit, and is used for transmitting dispatching command text data and controlling and managing the audio processing circuit and the audio power amplifier circuit; the voice synthesis circuit is connected with the audio processing circuit and is used for converting the dispatching command text data into dispatching command voice signals; the audio processing circuit is connected with the audio power amplifier circuit and is used for adjusting and processing the dispatching command voice signal; the audio power amplifier circuit is connected with the loudspeaker and is used for playing the dispatching command voice signal; the power supply circuit supplies power to the processor chip, the voice synthesis circuit, the audio processing circuit and the audio power amplifier circuit. According to the invention, the dispatching command can be broadcasted through voice on the railway train, so that a train driver can timely, conveniently and accurately obtain dispatching command information through voice broadcasting.

Description

TECHNICAL FIELD

[0001] The present application relates to a railway wireless train dispatching communication system, in particular to a railway wireless train dispatching command voice broadcast circuit capable of realizing voice broadcast of dispatching command information of the railway wireless train dispatching communication system. BACKGROUND

[0002] The dispatching command is a written command issued by the train dispatcher on behalf of the railway general company or the railway bureau to the grass-roots transport station and the locomotive for implementing the train working diagram and the marshalling scheme, ensuring the normal operation of the transport order, and timely handling of the sudden situation in the jurisdiction section. It plays an extremely important role in railway transport management. At present, the dispatching command is issued in the form of text information to the locomotive integrated wireless communication equipment of the train through wireless communication, and is displayed on the operation display terminal. The train driver must obtain the dispatching command information by checking the display content of the operation display terminal, which affects the train driver's visual observation of the road ahead, causes inconvenience to the driving of the locomotive, and exists certain safety hazards. SUMMARY

[0003] In view of the problems existing in the prior art, in order to further improve the safety of train operation, the present application provides a railway wireless train dispatching command voice broadcast circuit, which can realize voice broadcast of the dispatching command on the train, so that the train driver can obtain the dispatching command information in time, conveniently and accurately through voice broadcast.

[0004] The technical scheme adopted by the present application is: a railway wireless train dispatching command voice broadcast circuit, comprising a processor chip with a model of MIMXRT1062, a power supply circuit, a voice synthesis circuit, an audio processing circuit, an audio power amplifier circuit and a loudspeaker; the processor chip is connected with the voice synthesis circuit, the audio processing circuit and the audio power amplifier circuit respectively, and is used for transmitting dispatching command text data and controlling and managing the audio processing circuit and the audio power amplifier circuit; the voice synthesis circuit is connected with the audio processing circuit, and is used for converting the dispatching command text data into a dispatching command voice signal; the audio processing circuit is connected with the audio power amplifier circuit, and is used for adjusting and processing the dispatching command voice signal; the audio power amplifier circuit is connected with the loudspeaker, and is used for playing the dispatching command voice signal; and the power supply circuit provides power supply for the processor chip, the voice synthesis circuit, the audio processing circuit and the audio power amplifier circuit.

[0005] The technical effect of the present application is: the dispatching command on the train is broadcasted through voice, so that the train driver can obtain the dispatching command information in time, conveniently and accurately through voice broadcast, it is no longer necessary to check the dispatching command content displayed on the operation display terminal, and it will not affect the train driver's visual observation of the road ahead, which has important significance for ensuring the safety of railway operation and improving the efficiency of transport operation. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 The circuit connection block diagram for realizing the application; Figure 2 The power supply circuit principle diagram for the application; Figure 3 The speech synthesis circuit principle diagram for the application; Figure 4 The audio processing circuit principle diagram for the application; Figure 5 The audio power amplifier circuit principle diagram for the application. DETAILED DESCRIPTION

[0007] In order to more clearly understand the application, the following will be described in detail in combination with the drawings and embodiments: As Figure 1 shown, a railway wireless train dispatching command speech broadcast circuit includes a processor chip of model MIMXRT1062, a power supply circuit, a speech synthesis circuit, an audio processing circuit, an audio power amplifier circuit and a loudspeaker.

[0008] The power supply circuit input interface POW is connected with external DC 12V power supply, the output interface 12V is connected with the audio power amplifier circuit 12V interface to provide DC 12V power supply, the output interface 3V3 is connected with the 3V3 interface of the processor chip, the speech synthesis circuit, the audio processing circuit and the audio power amplifier circuit to provide DC 3.3V power supply, and the output interface 1V8 is connected with the 1V8 interface of the audio processing circuit to provide DC 1.8V power supply; the TXD1 and RXD1 pins of the processor chip serial port 1 are respectively connected with the communication serial port RXD and TXD pins of the speech synthesis circuit, the GPIO_IO12 pin is connected with the state output interface R / B of the speech synthesis circuit, the SDA1 and SCL1 pins of the IIC1 interface are respectively connected with the AUDIO_SDA and AUDIO_SCL pins of the IIC interface of the audio processing circuit, the SDA2 and SCL2 pins of the IIC2 interface are respectively connected with the AMP_SDA and AMP_SCL pins of the IIC interface of the audio power amplifier circuit, and the GPIO_IO13 pin is connected with the output control AMP_MUTE interface of the audio power amplifier circuit; the speech output interface AFO of the speech synthesis circuit is connected with the audio input interface AFI of the audio processing circuit; the audio output interface AUDIO_AFOP and AUDIO_AFOM pins of the audio processing circuit are respectively connected with the input interface AMP_INP and AMP_INN of the audio power amplifier circuit; and the output interface SPK+ and SPK- pins of the audio power amplifier circuit are respectively connected with the positive and negative electrodes of the loudspeaker.

[0009] As Figure 2As shown, the power supply circuit includes a switching power supply chip N1 of model TPS54335ADDAR and an LDO power supply chip N3 of model LP5907MFX-1.8; the power supply circuit supplies power to an external DC 12V power input interface POW through a 12V interface; the 2-pin of the switching power supply chip N1 is connected to the 12V interface and grounded through a capacitor C4 and a capacitor C5 in parallel, the 7-pin is connected to the 2-pin through a resistor R2 and grounded through a resistor R4 and a capacitor C9 in parallel, the 8-pin is grounded through a resistor R5, the 4-pin and the 0-pin are grounded, the 6-pin is grounded through a capacitor C12 and grounded through a capacitor C10 and a resistor R7 in series, the 5-pin of the switching power supply chip N1 is grounded through a resistor R6, the 3-pin is connected to the 1-pin through a capacitor C3 and connected to one end of an inductor L1, the other end of the inductor L1 is connected to a 3V3 output interface and connected to the 5-pin of the switching power supply chip N1 through a resistor R3 and grounded through a capacitor C6, a capacitor C7 and a capacitor C8 in parallel; the 1-pin of the LDO power supply chip N3 is connected to the 3-pin and a 3V3 power supply interface and grounded through a capacitor C13, the 2-pin is grounded, the 5-pin is connected to a 1V8 output interface and grounded through a capacitor C14 and a capacitor C15 in parallel; the DC 12V external power supply supplies power to the output interface 12V through the power supply circuit, converts the DC 12V power supply to DC 3.3V through the switching power supply chip N1 to supply power to the 3V3 output interface of the power supply circuit, and converts the DC 3.3V power supply to 1.8V through the LDO power supply chip N3 to supply power to the 1V8 output interface of the power supply circuit.

[0010] As shown in Figure 3 As shown, the voice synthesis circuit includes a voice synthesis chip N2 of model SYN8086 and a crystal oscillator G1 of model DSX321G-24.000MHz; the 1-pin and the 41-pin of the voice synthesis chip N2 are grounded, the 2-pin is grounded through a capacitor C11, the 13-pin is grounded through a capacitor C20, the 14-pin is grounded through a capacitor C21, the 32-pin is grounded through a capacitor C1 and a capacitor C2 in parallel, the 12-pin is connected to a 3V3 power supply interface through an inductor L2 and grounded through a capacitor C19, the 20-pin is connected to the 3V3 power supply interface through a resistor R10 and grounded through a capacitor C18, the 22-pin is connected to the 3-pin of the crystal oscillator G1 and grounded through a capacitor C17, the 23-pin is connected to the 1-pin of the crystal oscillator G1 and grounded through a capacitor C16, the 5-pin is connected to a state output interface R / B, the 30-pin is connected to a communication serial port RXD pin through a resistor R8, the 31-pin is connected to a communication serial port TXD pin through a resistor R1, and the 3-pin is connected to a voice output interface AFO through a resistor R9; the voice synthesis chip N2 converts the dispatch command text data transmitted by the processor chip into a dispatch command voice signal and outputs it to the voice output interface.

[0011] As shown in Figure 4As shown, the audio processing circuit includes an audio processing chip N4 of model TLV320AIC3106; the 0th, 42nd, 43rd, 45th and 46th pins of the audio processing chip are grounded, the 1st pin is connected with the IIC bus interface AUDIO_SCL pin and connected with the power supply interface 3V3 through the resistor R11, the 2nd pin is connected with the IIC bus interface AUDIO_SDA pin and connected with the power supply interface 3V3 through the resistor R12, the 5th pin is sequentially connected with the audio input interface AFI through the capacitor C29 and the resistor R18, the 6th pin is grounded through the capacitor C30, the 15th and 26th pins are grounded through the magnetic bead L5, the 16th, 17th and 24th pins are connected with the power supply interface 3V3 through the magnetic bead L9 and connected with the 20th pin in parallel through the capacitor C46 and the capacitor C47, the 20th and 21st pins are grounded through the magnetic bead L8, the 25th pin is connected with the power supply interface 3V3 through the magnetic bead L6 and connected with the 26th pin in parallel through the capacitor C36 and the capacitor C37, the 31st pin is connected with the audio output interface AUDIO_AFOP pin through the resistor R20, the 32nd pin is connected with the audio output interface AUDIO_AFOM pin through the resistor R19, the 33rd pin is connected with the power supply interface 3V3 through the resistor R17 and grounded through the capacitor C28, the 36th pin is connected with the power supply interface 1V8 and grounded in parallel through the capacitor C23 and the capacitor C24, the 44th pin is connected with the power supply interface 3V3 and grounded through the capacitor C22; the dispatching command voice signal is adjusted and processed through the audio processing chip N4.

[0012] As Figure 5As shown, the audio power amplifier circuit includes an audio power amplifier chip N5 of model TAS5421QPWP; the 1st, 9th, 16th and PAD pins of the audio power amplifier chip N5 are grounded, the 3rd pin is grounded through a capacitor C45, the 15th pin is connected to a power supply interface 12V through a magnetic bead L3 and is connected to ground in parallel through capacitors C25, C26 and C27, the 4th pin is connected to an IIC bus interface AMP_SDA pin and is connected to a power supply interface 3V3 through a resistor R16, the 5th pin is connected to an IIC bus interface AMP_SCL pin and is connected to a power supply interface 3V3 through a resistor R15, the 2nd pin is connected to a power supply interface 3V3 through a resistor R13, the 8th pin is connected to an output control interface AMP_MUTE through a resistor R22 and is connected to a power supply interface 3V3 through a resistor R14, the 6th pin is connected to an audio input interface AMP_INP pin through a capacitor C41 and is connected to ground in parallel through a resistor R24 and a capacitor C35, the 7th pin is connected to an audio input interface AMP_INN pin through a capacitor C41 and is connected to ground in parallel through a resistor R25 and a capacitor C44, the 10th pin is connected to the 11th pin and one end of an inductor L4 through a capacitor C31, the 11th pin is connected to ground in series through a resistor R21 and a capacitor C34, the other end of the inductor L4 is connected to an audio output interface SPK+ pin and is connected to ground in parallel through a capacitor C32 and a capacitor C33, the 13th pin of the audio power amplifier chip N5 is connected to the 12th pin and one end of an inductor L7 through a capacitor C42, the 12th pin is connected to ground in series through a resistor R23 and a capacitor C38, the other end of the inductor L7 is connected to an audio output interface SPK- pin and is connected to ground in parallel through a capacitor C39 and a capacitor C40; the dispatching command voice signal is power amplified by the audio power amplifier chip N5 and output to a loudspeaker for playing.

[0013] In embodiment 1, a train dispatcher sends dispatching command text data to a locomotive integrated wireless communication device on a train by operating a wireless train dispatching system ground equipment, a processor chip of a railway wireless train dispatching dispatching command voice broadcast circuit acquires the dispatching command text data and transmits the dispatching command text data to a voice synthesis circuit through a serial port, the voice synthesis circuit converts the dispatching command text data into a dispatching command voice signal and transmits the dispatching command voice signal to an audio processing circuit, the audio processing circuit adjusts and processes the dispatching command voice signal and transmits the dispatching command voice signal to an audio power amplifier circuit, the audio power amplifier circuit power amplifies the dispatching command voice signal and transmits the dispatching command voice signal to a loudspeaker for playing, thereby realizing voice broadcast of the dispatching command on the train.

Claims

1. A railway wireless train dispatching command voice broadcasting circuit, characterized in that: The system includes a processor chip (model MIMXRT1062), a power supply circuit, a speech synthesis circuit, an audio processing circuit, an audio amplifier circuit, and a speaker. The processor chip is connected to the speech synthesis circuit, the audio processing circuit, and the audio amplifier circuit, respectively, for transmitting scheduling command text data and controlling and managing the audio processing circuit and the audio amplifier circuit. The speech synthesis circuit is connected to the audio processing circuit and is used to convert the scheduling command text data into scheduling command voice signals. The audio processing circuit is connected to the audio amplifier circuit and is used to adjust and process the scheduling command voice signals. The audio amplifier circuit is connected to the speaker and is used to play the scheduling command voice signals. The power supply circuit provides power to the processor chip, the speech synthesis circuit, the audio processing circuit, and the audio amplifier circuit.

2. The railway wireless train dispatching command voice broadcasting circuit as described in claim 1, characterized in that: The power supply circuit includes a TPS54335ADDAR switching power supply chip N1 and an LP5907MFX-1.8 LDO power supply chip N3. The power supply circuit's 12V output interface is connected to an external DC 12V power input interface POW. Pin 2 of the switching power supply chip N1 is connected to the 12V interface and grounded through capacitors C4 and C5. Pin 7 is connected to pin 2 through resistor R2 and grounded through resistor R4 and capacitor C9. Pin 8 is grounded through resistor R5. Pins 4 and 0 are grounded. Pin 6 is grounded through capacitor C12 and grounded through... Capacitor C10 and resistor R7 are connected in series to ground. Pin 5 of the switching power supply chip N1 is grounded through resistor R6. Pin 3 is connected to pin 1 through capacitor C3 and to one end of inductor L1. The other end of inductor L1 is connected to the 3V3 power supply output interface and is connected to pin 5 of the switching power supply chip N1 through resistor R3. It is connected to ground in parallel through capacitors C6, C7, and C8. Pin 1 of the LDO power supply chip N3 is connected to pin 3 and the 3V3 power supply interface and is grounded through capacitor C13. Pin 2 is grounded. Pin 5 is connected to the 1V8 power supply output interface and is connected to ground in parallel through capacitors C14 and C15. The external DC12V power supply supplies power to the output interface 12V through the power supply circuit. The switching power supply chip N1 converts the DC12V power supply to DC3.3V to supply the output interface 3V3 of the power supply circuit. The LDO power supply chip N3 converts the DC3.3V power supply to 1.8V to supply the output interface 1V8 of the power supply circuit.

3. The railway wireless train dispatching command voice broadcasting circuit as described in claim 1, characterized in that: The speech synthesis circuit includes a speech synthesis chip N2 of model SYN8086 and a crystal oscillator G1 of model DSX321G-24.000MHz. Pins 1 and 41 of the speech synthesis chip N2 are grounded, pin 2 is grounded through capacitor C11, pin 13 is grounded through capacitor C20, pin 14 is grounded through capacitor C21, pin 32 is grounded through capacitors C1 and C2 in parallel, pin 12 is connected to the power supply interface 3V3 through inductor L2 and grounded through capacitor C19, pin 20 is connected to the power supply interface 3V3 through resistor R10 and grounded through capacitor C18, pin 22 is connected to pin 3 of crystal oscillator G1 and grounded through capacitor C17, pin 23 is connected to pin 1 of crystal oscillator G1 and grounded through capacitor C16, pin 5 is connected to the status output interface R / B, pin 30 is connected to the communication serial port RXD pin through resistor R8, pin 31 is connected to the communication serial port TXD pin through resistor R1, and pin 3 is connected to the voice output interface AFO through resistor R9. The N2 speech synthesis chip converts the text data of the scheduling commands transmitted from the processor chip into speech signals of the scheduling commands, and outputs them to the speech output interface.

4. The railway wireless train dispatching command voice broadcasting circuit as described in claim 1, characterized in that: The audio processing circuit includes an audio processing chip N4, model TLV320AIC3106. Pins 0, 42, 43, 45, and 46 of the audio processing chip are grounded. Pin 1 is connected to the IIC bus interface AUDIO_SCL pin and then to the 3V3 power supply interface via resistor R11. Pin 2 is connected to the IIC bus interface AUDIO_SDA pin and then to the 3V3 power supply interface via resistor R12. Pin 5 is connected to the audio input interface AFI via capacitor C29 and resistor R18. Pin 6 is grounded via capacitor C30. Pins 15 and 26 are grounded via ferrite bead L5. Pins 16, 17, and 24 are connected to the 3V3 power supply interface via ferrite bead L9. Pin 20 is connected to the power supply interface via capacitors C46 and C47 in parallel. Pins 20 and 21 are grounded via ferrite bead L8. Pin 25 is connected to the 3V3 power supply interface via ferrite bead L6 and is also connected to pin 26 via capacitors C36 and C37 in parallel. Pin 31 is connected to the AUDIO_AFOP pin of the audio output interface via resistor R20. Pin 32 is connected to the AUDIO_AFOM pin of the audio output interface via resistor R19. Pin 33 is connected to the 3V3 power supply interface via resistor R17 and is grounded via capacitor C28. Pin 36 is connected to the 1V8 power supply interface and is grounded via capacitors C23 and C24 in parallel. Pin 44 is connected to the 3V3 power supply interface and is grounded via capacitor C22. The audio signal for scheduling commands is adjusted and processed by the audio processing chip N4.

5. The railway wireless train dispatching command voice broadcasting circuit as described in claim 1, characterized in that: The audio amplifier circuit includes an audio amplifier chip N5, model TAS5421QPWP. Pins 1, 9, 16, and PAD of the audio amplifier chip N5 are grounded; pin 3 is grounded via capacitor C45; pin 15 is connected to the 12V power supply interface via ferrite bead L3, and is connected to ground in parallel via capacitors C25, C26, and C27; pin 4 is connected to the AMP_SDA pin of the IIC bus interface, and is connected to the 3V3 power supply interface via resistor R16; pin 5 is connected to the AMP_SCL pin of the IIC bus interface, and is connected to the 3V3 power supply interface via resistor R15; pin 2 is connected to the 3V3 power supply interface via resistor R13; pin 8 is connected to the output control interface AMP_MUTE via resistor R22, and is connected to the 3V3 power supply interface via resistor R14; pin 6 is connected to the audio input interface AMP_INP pin via capacitor C41, and... Pin 7 is connected to the audio input interface AMP_INN pin via resistor R24 ​​and capacitor C35 in parallel. Pin 10 is connected to pin 11 and one end of inductor L4 via capacitor C31. Pin 11 is connected to ground via resistor R21 and capacitor C34 in series. The other end of inductor L4 is connected to the audio output interface SPK+ pin and connected to ground via capacitors C32 and C33 in parallel. Pin 13 of audio amplifier chip N5 is connected to pin 12 and one end of inductor L7 via capacitor C42. Pin 12 is connected to ground via resistor R23 and capacitor C38 in series. The other end of inductor L7 is connected to the audio output interface SPK- pin and connected to ground via capacitors C39 and C40 in parallel. The audio amplifier chip N5 amplifies the dispatch command voice signal and outputs it to the speaker for playback.

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