本次设计的报警模块采用wt588d语音芯片进行语音播报和报警提示。当超

The alarm module designed this time uses the wt588d voice chip for voice announcements and alarm prompts. When the ultrasonic detects the distance or is below the safe distance, the STC89C52 microcontroller controls the voice chip to broadcast the current content. <br>The following picture is the pin diagram of the language chip circuit. The speaker is the speaker used for voice broadcast. P02 is the reset pin or not connected. Only the P03 port is the data pin. The Wt588d voice chip downloads the corresponding through the external minu downloader Voice files, such as broadcast welcome, then we need to edit this voice welcome via minu downloader. Then generate an address, when the microcontroller needs to broadcast this end of the voice, it will send instructions to wt588d to perform voice broadcast. <br>When writing the voice program to the SPI-FLASH memory 25PXX with the host computer software, select the one-line serial port control mode. The I / O port P03 is defined as the DATA data input port, and the microcontroller controls the WT588D voice module through the DATA data port. Other I / O ports P00, P01, P02, P04, P05, P06, P07, P10, and P11 can be used as buttons. For details, see the WT588D voice chip button control mode application circuit. The P17 terminal is the BUSY busy signal output terminal, which can be set to play status LED on and play status LED off. The voltage range of SPI-FLASH memory 25PXX is to ensure that it is between 2.8V and 3.5V. VDD-SIM is the serial power management input terminal of WT588D voice chip. Connect 25PXX VCC to this terminal, which can automatically balance the Serial port voltage. It is forbidden to connect the capacitor to the ground or directly to the ground at the PWM output. The PWM + / DAC and PWM- terminals must be protected against short circuits. <br>After selecting "One-line serial port mode" in the option interface, click "OK". The project document is in the state of one-line serial port mode.<br>Click "Operation" → "Button Settings", you can see the default state of "Button 1" → "Button 10" corresponding to each I / O port, where "Button 4" (corresponding I / O port is P03) option It has been locked by the system. P03 is the DATA pin in the first-line serial port mode, so it cannot be used as a button. The remaining I / O ports can still be used as buttons. In the pull-down menu of each button (I / O port), it can Select "Invalid button, pulse repeatable, pulse non-repeatable, level non-hold loop, level hold loop, play / stop, next track without loop, previous track without loop, next track with loop, previous track 15 trigger modes, such as cycleable, level-unavailable, pause, volume +, volume-, stop, etc. After the trigger mode is selected, the corresponding key (I / O port) is set to low level Trigger to play voice in the set way. <br>By default, all available buttons (I / O ports) in the system are pulse repeatable trigger mode.

The alarm module of this design uses the wt588d voice chip for voice broadcast and alarm prompt. When ultrasonic waves detect a distance or below the safe distance STC89C52 microcontroller control voice chip to broadcast the current content.<br>The following image is the language chip circuit pin diagram, the speaker is the speaker used to broadcast the voice, p02 is the reset pin can not be connected, only P03 mouth is the data pin, Wt588d voice chip he is through the external minu downloader to download the corresponding voice files, such as broadcast welcome, then we need to edit this voice welcome through the minu downloader. Then generate an address, when the microcontroller needs to broadcast this end of the voice, will send instructions to wt588d, voice broadcast.<br>When using the upper computer software to burn the voice program of SPI-FLASH memory 25PXX, select the first-line serial control mode. I/O port P03 is defined as the DATA data input, the microcontroller controls the WT588D voice module through the DATA data port. Other I/O port P00, P01, P02, P04, P05, P06, P07, P10, P111 can be used as keys, detailed can be seen WT588D voice chip key control mode application circuit. The P17 end is the BUSY busy signal output, which can be set to play state LED lights up and playback state LED off. SPI-FLASH memory 25PXX voltage range is to ensure that in 2.8V to 3.5V, VDD-SIM is the WT588D voice chip serial power management input, 25PXX VCC connected to this end, can automatically balance the 5WT88D and 25PXX between the serial port voltage. The PWM output end prohibits connecting capacitors to ground or direct ground, and the PWM-DAC and PWM-ends are protected against short circuits.<br>After selecting "First-line Serial Mode" in the options interface, click OK. The engineering document is in a first-line serial mode.<br>Click on "Operation" and "Key Settings" to see the default status of "Key 1" and "Key 10" for each I/O port, where "Key 4" (corresponding I/O port is P03) option has been locked by the system, P03 is data data foot in first-line serial mode, so it cannot be used as a key, the rest of the I/O port can still be used as keys, in each key (I/O port) 15 trigger ingesting methods, such as pulse repeatable, pulse non-repeatable, level non-hold loop, level hold loopable, play/stop, next song not loopable, previous song not loopable, next song can be cycled, previous song can be looped, level hold non-loop, pause, volume plus, -, stop" and so on.<br>Each of the keys (I/O ports) that the system defaults to use is a rerepeatable way for pulses.

The alarm module of this design uses WT588D voice chip for voice broadcast and alarm prompt. When the ultrasonic detection distance or below the safe distance STC89C52 MCU control voice chip to broadcast the current content.<br>The following figure shows the circuit pin diagram of the language chip. The speaker is used for voice broadcast, and the P02 is the reset pin or not. Only the P03 port is the data pin. The WT588D voice chip downloads the corresponding voice file through the external Mini downloader. For example, welcome to broadcast, so we need to edit this voice through the mini downloader. Then generate an address, when the MCU needs to broadcast this voice, it will send instructions to WT588D for voice broadcast.<br>When the upper computer software is used to write the voice program in spi-flash memory 25pxx, the first-line serial port control mode is selected. I / O port P03 is defined as data input port, and single chip microcomputer controls WT588D voice module through data port. Other I / O ports (p00, P01, P02, P04, P05, P06, P07, P10 and P11) can be used as keys. See the application circuit of WT588D voice chip key control mode for details. P17 terminal is busy signal output terminal, which can be set as play status LED on and play status led off. The voltage range of spi-flash memory 25pxx is 2.8v-3.5v. Vdd-sim is the serial port power management input terminal of WT588D voice chip. Connecting the VCC of 25pxx to this terminal can automatically balance the serial port voltage between WT588D and 25pxx. It is forbidden to connect capacitor to ground or directly to ground at PWM output terminal, and PWM + / DAC and PWM terminal shall be protected from short circuit.<br>Select "one line serial port mode" in the options interface and click "OK". Engineering documents are in the first-line serial port mode.<br>Click "operation" → "key setting", you can see the default state of "key 1" → "key 10" corresponding to each I / O port, in which "key 4" (the corresponding I / O port is P03) option has been locked by the system, and P03 is data pin in the first-line serial port mode, so it can not be used as a key, and the rest I / O ports can still be used as keys, in each key (I / O port) In the pull-down menu, 15 trigger modes can be selected, such as "key invalid, pulse repeatable, pulse non repeatable, level non hold cycle, level hold cycle, play / stop, next non cycle, previous non cycle, next non cycle, previous non cycle, level hold non cycle, pause, volume +, volume -, stop". After the trigger mode is selected, 15 trigger modes can be selected When the corresponding key (I / O port) is placed at low power level, the voice will be triggered and played in the set way.<br>By default, all available keys (I / O port) are pulse repeatable triggering mode.