Highway toll keyboard key prompt device

Abstract

The utility model discloses a key prompt device for a highway toll keyboard. The key prompt device mainly comprises a USB (Universal Serial Bus) to TTL (Transistor-Transistor Logic) module A, a TTL-to-RS485 module A, an RS485 to TTL module B, a TTL to USB module B, an RS485 to TTL module C, a main controller module, a voice module, a loudspeaker and other module circuits, according to the utility model, a USB signal is firstly converted into a TTL level signal, then the TTL level signal is converted into an RS485 signal, then the RS485 signal is divided into two signals, then the two signals are converted into TTL level signals, finally one signal is converted into a USB signal to be input into an industrial personal computer, and the other signal is collected and read by a single-chip microcomputer to control voice playing. On the premise that the use of an original charging keyboard is not affected, a silent charging keyboard is converted into a voiced charging keyboard.

Description

Technical Field

[0001] The utility model relates to the technical field of highway toll collection equipment, in particular to a keyboard key prompt device for a highway toll collection. Background Art

[0002] The toll keyboards currently used at toll stations are basically silent keyboards. Toll collectors need to check the input through the toll lane machine. Due to factors such as large traffic volume, high psychological pressure on toll collectors, lack of concentration, and external influences, it is very easy to make mistakes in entering vehicle models, license plates, etc., resulting in incorrect information and over- or under-collection of tolls, which will cause unnecessary disputes and affect the company's good image. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of existing equipment functions and to propose a highway toll keyboard key prompt device, which realizes the transformation of a "silent" toll keyboard into a "sounding" toll keyboard.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A highway toll keyboard key prompt device includes a toll keyboard, a USB to TTL module A, a TTL to RS485 module A, an RS485 to TTL module B, a TTL to USB module B, an RS485 to TTL module C, a main controller module, a voice module, a speaker, and a lane meter;

[0006] The charging keyboard is connected to the USB to TTL module A via a USB cable, the TX port of the USB to TTL module A is connected to the RX port of the TTL to RS485 module A, the RX port of the USB to TTL module A is connected to the TX port of the TTL to RS485 module A, the TX port of the TTL to RS485 module A is connected to the RX port of the RS485 to TTL module C, the RX port of the TTL to RS485 module A is connected to the TX port of the RS485 to TTL module C, the TX port of the RS485 to TTL module C is connected to the RX port of the main controller, the RX port of the RS485 to TTL module C is connected to the TX port of the main controller, the TX port of the main controller is connected to the RX port of the voice module, the RX port of the main controller is connected to the TX port of the voice module, and the voice module is electrically connected to the speaker;

[0007] The TX port of the TTL to RS485 module A is connected to the RX port of the RS485 to TTL module B, the RX port of the TTL to RS485 module A is connected to the TX port of the RS485 to TTL module B, the TX port of the RS485 to TTL module B is connected to the RX port of the TTL to USB module B, the RX port of the RS485 to TTL module B is connected to the TX port of the TL to USB module B, and the TL to USB module B is connected to the lane machine via a USB cable.

[0008] As a further improvement of the present technical solution, the main chip models of the USB to TTL module A and the TTL to USB module B are both CH9350.

[0009] As a further improvement of the present technical solution, the TTL to RS485 module A, the RS485 to TTL module B, and the RS485 to TTL module C are all bidirectional RS485-TTL modules.

[0010] As a further improvement to this technical solution, the main controller has two UART serial communication ports, and the model of the main controller is STM32F103; the model of the voice module is JQ8900-16P. Compared with the existing technology, the beneficial effect of this utility model is that the toll collection keyboard is connected to the device via a USB interface, and the device is simultaneously connected to the toll lane machine via a USB cable. This realizes the voice prompt function of key presses without destroying or modifying the original toll collection keyboard, and also does not affect the actual key functions of the toll collection keyboard. This device is more convenient to install and popularize, and has strong practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0012] Figure 1 This is a logic block diagram of the circuit module of the device proposed in this utility model;

[0013] Figure 2 This is a schematic structural diagram of the device proposed in the utility model.

[0014] Serial numbers in the figure: 11, USB to TTL module A; 12, TTL to RS485 module A; 13, RS485 to TTL module B; 14, TTL to USB module B; 15, RS485 to TTL module C; 16, main controller module; 17, voice module; 18, speaker. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example: See Figure 1 and Figure 2 The utility model is a highway toll keyboard voice prompt device, comprising a toll keyboard, a USB to TTL module A11, a TTL to RS485 module A12, an RS485 to TTL module B13, a TTL to USB module B14, an RS485 to TTL module C15, a main controller module 16, a voice module 17, a speaker 18 and a lane machine;

[0017] The charging keyboard 100 is connected to the USB to TTL module A11 via a USB cable, the TX port of the USB to TTL module A11 is connected to the RX port of the TTL to RS485 module A12, the RX port of the USB to TTL module A11 is connected to the TX port of the TTL to RS485 module A12, the TX port of the TTL to RS485 module A12 is connected to the RX port of the RS485 to TTL module C15, the RX port of the TTL to RS485 module A12 is connected to the TX port of the RS485 to TTL module C15, the TX port of the RS485 to TTL module C15 is connected to the RX port of the main controller 16, the RX port of the RS485 to TTL module C15 is connected to the TX port of the main controller 16, the TX port of the main controller 16 is connected to the RX port of the voice module 17, the RX port of the main controller 16 is connected to the TX port of the voice module 17, and the voice module 17 is electrically connected to the speaker 18;

[0018] The TX port of the TTL to RS485 module A12 is connected to the RX port of the RS485 to TTL module B13, the RX port of the TTL to RS485 module A12 is connected to the TX port of the RS485 to TTL module B13, the TX port of the RS485 to TTL module B13 is connected to the RX port of the TTL to USB module B14, the RX port of the RS485 to TTL module B13 is connected to the TX port of the TL to USB module B14, and the TL to USB module B14 is connected to the lane machine 200 via a USB cable.

[0019] The main chip models of the USB to TTL module A11 and the TTL to USB module B14 are both CH9350.

[0020] The TTL to RS485 module A12, the RS485 to TTL module B13, and the RS485 to TTL module C15 are all bidirectional RS485-TTL modules.

[0021] The main controller 16 has at least two UART serial communication ports, and the model of the main controller 16 is STM32F103; the model of the voice module 17 is JQ8900-16P.

[0022] The above power consumption modules are all powered by the USB cable connected to the lane machine and are powered by the lane machine.

[0023] The toll keyboard is connected to the USB to TTL module A11 through the USB port, and the USB signal is converted into a TTL level signal through the module. Since the TTL level signal is prone to signal change when it is shared by multiple channels, it is necessary to use the TTL to RS485 module A12 to convert the TTL level signal into an RS485 signal that can be shared by multiple channels. Here, the RS485 to TTL module B13 and the RS485 to TTL module C15 are used to collect the RS485 signal and convert it into two independent TTL level signals. One of the channels is connected to the TTL to USB module B14, and the TTL level signal is converted into a USB signal again and sent to the lane machine as the actual input of the key; the other channel is directly connected to the main controller 16, and the main controller 16 collects, reads and analyzes it, and then controls the voice module 17 to output the corresponding voice, which is finally played through the speaker 18.

[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highway toll keyboard key prompt device, characterized by: It includes a charging keyboard, a USB to TTL module A (11), a TTL to RS485 module A (12), an RS485 to TTL module B (13), a TTL to USB module B (14), an RS485 to TTL module C (15), a main controller (16), a voice module (17), a speaker (18) and a lane machine; The charging keyboard (100) is connected to the USB to TTL module A (11) via a USB cable, the TX port of the USB to TTL module A (11) is connected to the RX port of the TTL to RS485 module A (12), the RX port of the USB to TTL module A (11) is connected to the TX port of the TTL to RS485 module A (12), the TX port of the TTL to RS485 module A (12) is connected to the RX port of the RS485 to TTL module C (15), and the TTL to RS485 module A (12) is connected to the RX port of the RS485 to TTL module C (15). The RX port is connected to the TX port of the RS485 to TTL module C (15), the TX port of the RS485 to TTL module C (15) is connected to the RX port of the main controller (16), the RX port of the RS485 to TTL module C (15) is connected to the TX port of the main controller (16), the TX port of the main controller (16) is connected to the RX port of the voice module (17), the RX port of the main controller (16) is connected to the TX port of the voice module (17), and the voice module (17) is electrically connected to the speaker (18); The TX port of the TTL to RS485 module A (12) is connected to the RX port of the RS485 to TTL module B (13), the RX port of the TTL to RS485 module A (12) is connected to the TX port of the RS485 to TTL module B (13), the TX port of the RS485 to TTL module B (13) is connected to the RX port of the TTL to USB module B (14), the RX port of the RS485 to TTL module B (13) is connected to the TX port of the TL to USB module B (14), and the TL to USB module B (14) is connected to the lane machine (200) via a USB cable.

2. The highway toll keyboard key prompt device according to claim 1, characterized in that: The main chip models of the USB to TTL module A (11) and the TTL to USB module B (14) are both CH9350.

3. The highway toll keyboard key prompt device according to claim 1, characterized in that: The TTL to RS485 module A (12), the RS485 to TTL module B (13), and the RS485 to TTL module C (15) are all bidirectional RS485-TTL modules.

4. The highway toll keyboard key prompt device according to claim 1, characterized in that: The main controller (16) has at least two UART serial communication ports, and the model of the main controller (16) is STM32F103; the model of the voice module (17) is JQ8900-16P.

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