A voice broadcast module based on power carrier wave

Abstract

This utility model relates to the field of power line carrier technology, and in particular to a voice broadcast module based on power line carrier. It includes a power line carrier host deployed in the gas station's sales area, comprising a main control unit, a network communication unit, a power line carrier modulation unit, and a power supply unit; and at least one power line carrier voice playback board installed inside the fuel dispenser, comprising a slave control unit, a power line carrier demodulation unit, a voice synthesis unit, an audio amplification unit, a tag configuration unit, a power line network, and a power supply unit. This utility model, through the collaborative work of the power line carrier host and the power line carrier voice playback board, achieves millisecond-level transmission of payment result information in the gas station's explosion-proof environment. It utilizes the fuel dispenser's built-in speaker to play voice messages, such as "Fuel dispenser #3 payment successful, 200 yuan," enabling pump island staff to obtain payment status accurately in real time, thereby eliminating the risk of customers skipping out on payments due to information delays between the sales area and the fuel island.

Description

Technical Field

[0001] This utility model relates to the field of power line carrier technology, and in particular to a voice broadcast module based on power line carrier. Background Technology

[0002] In gas station payment scenarios, when customers complete fuel payments using mobile payment or PetroChina Wallet, the payment process is concentrated in the sales office, while gas station attendants are stationed in the dispersed pump island area. Due to the physical separation between the sales office and the pump island, the payment results cannot be synchronized to the gas station attendants in real time, resulting in a serious delay in payment status verification.

[0003] The following key issues have been exposed when customers use contactless payment for fuel: First, the payment process is concentrated in the sales area, making it impossible for staff at the refueling islands to receive real-time feedback on payment status, posing a risk of customers skipping out on payments due to information delays. Second, customers' confusion regarding the recharge of their PetroChina Wallet and the completion of payment, coupled with oversights by employees, can easily lead to financial losses due to non-payment. Third, criminals can use forged screenshots of successful payments to commit fraud, causing economic losses to gas stations. To address these issues, existing technologies have attempted to deploy loudspeaker systems or wearable mobile devices for payment notifications. However, due to the strict explosion-proof standards required for gas station environments, loudspeaker systems suffer from excessive volume and explosion-proof compatibility issues, while mobile device solutions are hampered by complex hardware allocation and management, high daily maintenance (charging / storage) costs, and insufficient explosion-proof compatibility, making it impossible to build an efficient and reliable information synchronization mechanism under the premise of safety and compliance.

[0004] Therefore, in response to the problems mentioned above, this utility model proposes a voice broadcast module based on power line carrier. Utility Model Content

[0005] To overcome the risks of payment evasion due to delayed payment status information transmission, losses due to user confusion regarding payment operations, and fraudulent payment vouchers in gas station payment scenarios, this utility model proposes a voice broadcast module based on power line carrier. Utilizing the existing power line network and the built-in speakers of the fuel dispensers, and by deploying a power line carrier host and a power line carrier voice playback board, it achieves real-time and targeted voice broadcast of payment result information in an explosion-proof environment. This accurately synchronizes the payment status to the personnel on duty at the refueling island, effectively eliminating information gaps and avoiding the limitations of adding dedicated explosion-proof audio equipment.

[0006] The technical solution of this utility model is: a voice broadcasting module based on power line carrier, comprising: A power line carrier control unit, deployed in the gas station's sales area, includes: The main control unit uses an MCIMX6 processor based on the ARM Cortex®-A7 core; The network communication unit implements a 100 Mbps Ethernet interface through the RTL8201 network port chip, which is used to establish a connection with the Sinopec marketing platform via TCP / IP protocol to obtain payment result data and voice broadcast commands in real time. The power line carrier modulation unit connects to the photovoltaic HPLC communication module CC0_TXHX13-SCBMC via a serial port to modulate the payment result data into a power line carrier signal. The power supply unit is used to supply power to the power line carrier host. At least one power line carrier voice playback board is installed inside the fuel dispenser, including: The slave control unit uses an AT32F435VGT7 processor based on the ARM Cortex®-M4 core; The power line carrier demodulation unit is connected to the photovoltaic HPLC communication module STA_TXHX13-SCBMC1 via a serial port to receive and demodulate the power line carrier signal sent by the host. The speech synthesis unit connects to the speech synthesis chip SYN6658 via a serial port and converts the demodulated payment result data into a speech signal. The audio amplification unit uses a power amplifier chip TPA3110D2PWP to amplify the voice signal and output it to the fuel dispenser speaker for playback. The tag number configuration unit sets the unique identifier tag number of the slave device through two rotary encoder switches; Power line networks serve as a communication medium for transmitting modulated power line carrier signals. The power supply unit is used to power the power line carrier voice playback board.

[0007] Preferably, the power line carrier voice playback board also includes a signal switching unit. This unit uses a signal relay HFD3 / 5 to realize the dual-channel audio switching function. The first channel transmits the payment voice signal output by the audio amplification unit to the fuel dispenser speaker, and the second channel selectively accesses the voice signals of other power line carrier voice playback boards on the fuel dispenser.

[0008] Preferably, the power line carrier host also includes a web page configuration interface, which provides a remote configuration interface to set the mapping relationship between the fuel dispenser number and the slave unit number, customize the payment voice content template and playback rules, adjust the TCP / IP network parameters between the host and the Sinopec marketing platform, and also supports system operation log query and firmware online upgrade functions to achieve centralized operation and maintenance management.

[0009] Preferably, the web page configuration interface supports sending test commands to a specified slave device to verify the integrity of the voice broadcast link, query the hardware version numbers of the host control unit and the slave control unit, and actively trigger the custom voice broadcast of the Sinopec marketing platform checkout process.

[0010] Preferably, the payment result data includes key fields such as fuel dispenser number, fuel type, payment amount, and payment status. The voice synthesis unit generates voice content according to a preset structured template, with a fixed format of "fuel dispenser number, payment amount in yuan, success / failure". Standardized broadcasting eliminates the risk of employee misjudgment.

[0011] Preferably, the tag number configuration unit generates a binary code by rotating an encoding switch, and the slave control unit binds the code to the fuel dispenser number to ensure that the payment data sent by the host accurately matches the target fuel dispenser.

[0012] Preferably, the power supply unit of the power line carrier host and the power line carrier voice playback board adopts a 12V switching power supply input and outputs 5V / 3.3V voltage through a DC-DC converter.

[0013] Preferably, the master control unit adds a timestamp and transaction serial number to the payment result data, and the slave control unit executes the broadcast after verifying the data integrity.

[0014] Preferably, the power line carrier host obtains the payment result containing the fuel dispenser number from the Sinopec marketing platform in real time via TCP / IP protocol. Then, the power line carrier host queries a preset mapping table to match and generate the location number and broadcast content of the target power line carrier voice playback board. The power line carrier host sends the data packet to the power line network through the power line carrier modulation unit. The target power line carrier voice playback board extracts the data and verifies the location number consistency through the power line carrier demodulation unit. Finally, it drives the voice synthesis chip SYN6658 to generate audio, the power amplifier chip TPA3110D2PWP amplifies the signal, and the payment result is played through the fuel dispenser speaker.

[0015] As a preferred method, after the playback is completed, the control unit returns a broadcast confirmation signal containing the transaction serial number to the power line carrier host. The power line carrier host records the broadcast time, device tag number and status and uploads them to the Sinopec marketing platform.

[0016] The beneficial effects of this utility model are: 1. This utility model achieves millisecond-level directional transmission of payment result information in the explosion-proof environment of a gas station through the collaborative work of a power line carrier host and a power line carrier voice playback board. The built-in speaker of the fuel dispenser plays voice messages, such as "Payment of 200 yuan successfully completed at fuel dispenser No. 3," enabling pump island staff to obtain payment status in real time and accurately, thereby completely eliminating the risk of skipping payments caused by information delays between the business office and the fuel island.

[0017] 2. This utility model adopts a hardware-encoded binding position configuration mechanism (rotary encoding switch) and standardized voice template to forcibly broadcast key information such as fuel dispenser number, payment amount and status. This not only solves the problem of customers' confusion about recharging and paying with the PetroChina Wallet, but also eliminates the possibility of criminals using fake payment screenshots to commit fraud, thereby avoiding financial losses caused by human oversight.

[0018] 3. This utility model reuses the existing power line network and fuel dispenser speaker resources of gas stations, and transmits data through a power line carrier modulation and demodulation module, thus eliminating the need for additional audio wiring. At the same time, the power supply module is designed in strict accordance with the GB 3836.1 explosion-proof standard, avoiding maintenance problems such as excessive volume of external broadcasting equipment disturbing residents and explosion-proof compatibility, charging and storage of mobile devices. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic representation of the workflow of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0021] This utility model provides an embodiment: a voice broadcasting module based on power line carrier, comprising: A power line carrier control unit, deployed in the gas station's sales area, includes: The main control unit uses an MCIMX6 processor based on the ARM Cortex®-A7 core; The network communication unit implements a 100 Mbps Ethernet interface through the RTL8201 network port chip, which is used to establish a connection with the Sinopec marketing platform via TCP / IP protocol to obtain payment result data and voice broadcast commands in real time. The power line carrier modulation unit connects to the photovoltaic HPLC communication module CC0_TXHX13-SCBMC via a serial port to modulate the payment result data into a power line carrier signal. The power supply unit is used to supply power to the power line carrier host. At least one power line carrier voice playback board is installed inside the fuel dispenser, including: The slave control unit uses an AT32F435VGT7 processor based on the ARM Cortex®-M4 core; The power line carrier demodulation unit is connected to the photovoltaic HPLC communication module STA_TXHX13-SCBMC1 via a serial port to receive and demodulate the power line carrier signal sent by the host. The speech synthesis unit connects to the speech synthesis chip SYN6658 via a serial port and converts the demodulated payment result data into a speech signal. The audio amplification unit uses a power amplifier chip TPA3110D2PWP to amplify the voice signal and output it to the fuel dispenser speaker for playback. The tag number configuration unit sets the unique identifier tag number of the slave device through two rotary encoder switches; Power line networks serve as a communication medium for transmitting modulated power line carrier signals. The power supply unit is used to power the power line carrier voice playback board.

[0022] Furthermore, the power line carrier host deployed in the gas station's sales office receives payment result data from the Sinopec marketing platform in real time via its network communication unit (RTL8201 Ethernet chip) using the TCP / IP protocol. The main control unit drives the power line carrier modulation unit to modulate the data into a carrier signal and inject it into the power line network. The power line carrier voice playback board installed in the target fuel dispenser captures and demodulates the signal from the power line through the power line carrier demodulation unit. After the slave control unit parses the data, it controls the voice synthesis unit to generate structured voice, which is then driven by the audio amplification unit to play a targeted announcement on the fuel dispenser's speaker: "Fuel dispenser number 'payment amount' yuan successfully."

[0023] Furthermore, the payment result of this utility model is transmitted to the corresponding fuel dispenser horn via power line carrier in milliseconds, enabling pump island staff to know the payment status instantly, thereby completely eliminating the information delay between payment in the business office and on-site supervision; at the same time, the hardware-bound rotary encoder switch position number ensures accurate matching of the broadcast position, and the standardized voice template broadcasts key information such as amount / status, thereby preventing customer misoperation and fraudulent screenshots.

[0024] The power line carrier voice playback board also includes a signal switching unit. This unit uses a signal relay HFD3 / 5 to realize the dual-channel audio switching function. The first channel transmits the payment voice signal output by the audio amplification unit to the fuel dispenser speaker, and the second channel selectively connects to the voice signals of other power line carrier voice playback boards on the fuel dispenser.

[0025] Furthermore, when the power line carrier voice playback board receives the payment voice broadcast instruction sent by the power line carrier host, its signal switching unit automatically switches to the first channel and transmits the payment voice signal output by the audio amplification unit (such as "Payment of 200 yuan successfully at machine No. 3") to the fuel dispenser speaker for broadcast. When other function boards of the fuel dispenser (such as the fuel metering board or the fault alarm board) need to output voice, the signal switching unit switches to the second channel and directs the voice signal of the function board to the same speaker.

[0026] The power line carrier host also includes a web page configuration interface, which provides a remote configuration interface to set the mapping relationship between the fuel dispenser number and the slave unit number, customize the payment voice content template and playback rules, adjust the TCP / IP network parameters between the host and the Sinopec marketing platform, and support system operation log query and firmware online upgrade functions to achieve centralized operation and maintenance management.

[0027] Furthermore, maintenance personnel can remotely log in to the power line carrier host via a web-based configuration interface. In the configuration interface, they can set the mapping relationship between the physical number of the fuel dispenser and the rotary encoder switch number of the slave unit, customize the payment voice content template (such as "{signature} fuel dispenser payment {amount} yuan {status}"), and adjust the TCP / IP connection parameters between the host and the Sinopec marketing platform. The system automatically stores the configuration data to the main control unit. During daily maintenance, network communication logs and payment broadcast records can be queried through this interface, and firmware files can be uploaded to complete online upgrades of the host / slave program.

[0028] The web page configuration interface supports sending test commands to a specified slave device to verify the integrity of the voice broadcast link, querying the hardware version numbers of the host control unit and the slave control unit, and actively triggering custom voice broadcasts for the Sinopec marketing platform checkout process.

[0029] Furthermore, maintenance personnel can perform operations through the web configuration interface. By clicking the "Voice Test" button on the configuration interface, a test command is sent to the specified slave unit number, triggering the target fuel dispenser's loudspeaker to play a preset verification voice (such as "Test successful for unit number X"). The "Version Query" function is used to obtain the MCIMX6 firmware version of the main control unit and the AT32F435VGT7 program version of the slave control unit. When the marketing platform initiates the checkout process, the "Checkout Broadcast" option triggers the host to broadcast a customized checkout voice to all slave units (such as "Daily checkout completed, please verify the account").

[0030] The payment result data includes key fields such as fuel dispenser number, fuel type, payment amount, and payment status. The voice synthesis unit generates voice content according to a preset structured template, with a fixed format of "fuel dispenser number, payment amount in yuan, success / failure". Standardized broadcasting eliminates the risk of employee misjudgment.

[0031] Furthermore, the payment result data packet obtained by the main control unit from the Sinopec marketing platform is required to include fields such as fuel dispenser number, fuel type, payment amount, and payment status. After receiving and demodulating the data, the voice synthesis unit generates a voice signal strictly according to the preset structured template ("Location number" fuel dispenser, payment amount" yuan, "success / failure"). In this case, "Location number" is replaced with the physical number of the fuel dispenser bound to the rotary encoder switch, "Amount" is replaced with the actual payment amount, and "success / failure" is replaced with the payment status judgment result. Finally, a standardized voice such as "Fuel dispenser No. 3, payment of 200 yuan, successful" is output through the speaker.

[0032] The tag number configuration unit generates a binary code through a rotary encoding switch, and the slave control unit binds the code to the fuel dispenser number to ensure that the payment data sent by the host accurately matches the target fuel dispenser.

[0033] Furthermore, during the installation of the fuel dispenser, the operator generates a binary tag number by rotating two physical coding switches (e.g., 0011 corresponds to dispenser number 3). The slave control unit reads this code and binds it to the physical number of the fuel dispenser before writing it into the internal non-volatile memory. When the power line carrier host sends a payment data packet, the slave power line carrier demodulation unit extracts the target tag number field from the data packet. The slave control unit compares it with the locally stored code in real time. The subsequent voice broadcast process is triggered only when the tag numbers match completely. For example, data with tag number 0011 sent by the host is only broadcast by fuel dispenser number 3.

[0034] The power supply unit of the power line carrier host and the power line carrier voice playback board adopts a 12V switching power supply input, and outputs 5V / 3.3V voltage through a DC-DC converter.

[0035] Furthermore, the reused power line network of this utility model eliminates the need for additional wiring, and the 12V switching power supply and DC-DC conversion design of the host / slave power supply unit meet the GB 3836.1 explosion-proof standard, avoiding the noise pollution from external speakers and the explosion-proof risks of mobile devices.

[0036] The master control unit adds a timestamp and transaction serial number to the payment result data, and the slave control unit executes the broadcast after verifying the data integrity.

[0037] Furthermore, when the main control unit obtains the payment result from the Sinopec marketing platform, it automatically embeds the timestamp and transaction serial number to form an encrypted data packet and sends it through the power line carrier modulation unit. After the slave control unit of the target power line carrier voice playback board demodulates the data, it first verifies the time sequence of the timestamp and the current system clock, and verifies the continuous increment of the serial number compared to the previous received value. Only when the time window is valid (e.g., ±30 seconds) and the serial number has no breaks / repetitions, does it drive the voice synthesis unit to perform the broadcast; otherwise, it discards the data packet and records the abnormal log.

[0038] Please see Figure 1 Furthermore, the workflow of this utility model will be described in detail: The power line carrier host establishes a long TCP / IP connection with the Sinopec marketing platform through the RTL8201 network port chip, and receives encrypted payment result data packets sent by the platform in milliseconds. These data packets are required to include the fuel dispenser physical number, payment amount, payment status, timestamp, and transaction serial number.

[0039] The main control unit parses the payment data packet, queries the mapping table between the fuel dispenser number and the slave unit position number stored in the non-volatile memory, determines the target slave unit rotary encoder switch position number, and generates a structured broadcast text ("0011; Payment of 200 yuan; Success"); the power line carrier modulation unit modulates the text data into an HPLC carrier signal and injects it into the power line network of the business room.

[0040] The power line carrier voice playback board inside the target refueling machine captures carrier signals from the power line through the STA_TXHX13-SCBMC1 module. After demodulating the data from the control unit, it performs triple verification: First, the tag number field precisely matches the local rotation code switch value; second, the timestamp deviates from the system clock within a ±30-second valid window; third, the transaction serial number is continuously incremented without repetition. If any verification fails, the data packet is discarded and a security event is recorded.

[0041] After successful verification, the speech synthesis unit converts the text into an audio signal ("Payment of 200 yuan to fuel dispenser No. 3 was successful") according to the preset template. The signal switching unit automatically switches to the first channel, the audio amplification unit drives the fuel dispenser speaker to play the audio, and at the same time blocks the voice output of other function boards.

[0042] After the broadcast is completed, the control unit generates a confirmation signal containing the original transaction serial number, which is transmitted back to the power line carrier host via the power line carrier. The power line carrier host records the broadcast time, device tag number and status, and transmits the "payment-broadcast" two-factor audit log back to the marketing platform in real time via the TCP / IP protocol.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A power line carrier based voice announcement module, characterized by, Including: A power line carrier control unit, deployed in the gas station's sales area, includes: The main control unit uses an MCIMX6 processor based on the ARM Cortex®-A7 core; The network communication unit implements a 100 Mbps Ethernet interface through the RTL8201 network port chip, which is used to establish a connection with the Sinopec marketing platform via TCP / IP protocol to obtain payment result data and voice broadcast commands in real time. The power line carrier modulation unit connects to the photovoltaic HPLC communication module CC0_TXHX13-SCBMC via a serial port to modulate the payment result data into a power line carrier signal. The power supply unit is used to supply power to the power line carrier host. At least one power line carrier voice playback board is installed inside the fuel dispenser, including: The slave control unit uses an AT32F435VGT7 processor based on the ARM Cortex®-M4 core; The power line carrier demodulation unit is connected to the photovoltaic HPLC communication module STA_TXHX13-SCBMC1 via a serial port to receive and demodulate the power line carrier signal sent by the host. The speech synthesis unit connects to the speech synthesis chip SYN6658 via a serial port and converts the demodulated payment result data into a speech signal. The audio amplification unit uses a power amplifier chip TPA3110D2PWP to amplify the voice signal and output it to the fuel dispenser speaker for playback. The tag number configuration unit sets the unique identifier tag number of the slave device through two rotary encoder switches; Power line networks serve as a communication medium for transmitting modulated power line carrier signals. The power supply unit is used to power the power line carrier voice playback board.

2. The power line carrier based voice broadcast module of claim 1, wherein: The power line carrier voice playback board also includes a signal switching unit. This unit uses a signal relay HFD3 / 5 to realize the dual-channel audio switching function. The first channel transmits the payment voice signal output by the audio amplification unit to the fuel dispenser speaker, and the second channel selectively connects to the voice signals of other power line carrier voice playback boards on the fuel dispenser.

3. The power line carrier based voice broadcast module of claim 1, wherein: The power line carrier host also includes a web page configuration interface, which provides a remote configuration interface to set the mapping relationship between the fuel dispenser number and the slave unit number, customize the payment voice content template and playback rules, adjust the TCP / IP network parameters between the host and the Sinopec marketing platform, and support system operation log query and firmware online upgrade functions to achieve centralized operation and maintenance management.

4. The power line carrier based voice broadcast module of claim 3, wherein: The web page configuration interface supports sending test commands to a specified slave device to verify the integrity of the voice broadcast link, querying the hardware version numbers of the host control unit and the slave control unit, and actively triggering custom voice broadcasts for the Sinopec marketing platform checkout process.

5. The power line carrier based voice broadcast module of claim 1, wherein: The payment result data includes key fields such as fuel dispenser number, fuel type, payment amount, and payment status. The voice synthesis unit generates voice content according to a preset structured template, with a fixed format of "fuel dispenser number, payment amount in yuan, success / failure". Standardized broadcasting eliminates the risk of employee misjudgment.

6. The power line carrier based voice broadcast module of claim 1, wherein: The tag number configuration unit generates a binary code through a rotary encoding switch, and the slave control unit binds the code to the fuel dispenser number to ensure that the payment data sent by the host accurately matches the target fuel dispenser.

7. The power line carrier based voice broadcast module of claim 1, wherein: The power supply unit of the power line carrier host and the power line carrier voice playback board adopts a 12V switching power supply input, and outputs 5V / 3.3V voltage through a DC-DC converter.

8. The power line carrier based voice broadcast module of claim 1, wherein: The master control unit adds a timestamp and transaction serial number to the payment result data, and the slave control unit executes the broadcast after verifying the data integrity.

9. The power line carrier based voice broadcast module of claim 1, wherein: The power line carrier host obtains the payment result containing the fuel dispenser number from the Sinopec marketing platform in real time via TCP / IP protocol. Then, the power line carrier host queries a preset mapping table to match and generate the location number and broadcast content of the target power line carrier voice playback board. The power line carrier host sends the data packet to the power line network through the power line carrier modulation unit. The target power line carrier voice playback board extracts the data and verifies the location number consistency through the power line carrier demodulation unit. Finally, it drives the voice synthesis chip SYN6658 to generate audio, the power amplifier chip TPA3110D2PWP amplifies the signal, and the payment result is played through the fuel dispenser speaker.

10. A voice broadcasting module based on power line carrier according to claim 1, characterized in that: After playback is completed, the control unit returns a broadcast confirmation signal containing the transaction serial number to the power line carrier host. The power line carrier host records the broadcast time, device tag number and status and uploads it to the Sinopec marketing platform.

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