CN209746538U

CN209746538U - Warning lamp box control circuit based on FPGA

Info

Publication number: CN209746538U
Application number: CN201920853115.3U
Authority: CN
Inventors: 许召辉; 徐涵; 徐淑波
Original assignee: Caac East China Photoelectric (shanghai) Co Ltd
Current assignee: Caac East China Photoelectric (shanghai) Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2019-12-06
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a warning lamp box control circuit based on FPGA, handle board, signal processing board, luminous piece drive plate and report an emergency and ask for help or increased vigilance display panel including power and interface, power and interface are handled the board and are included power conversion unit, two redundant CAN bus interface, two redundant RS422 buses and two redundant RS485 bus interfaces, and power conversion unit connects signal processing board, luminous piece drive plate respectively and reports an emergency and asks for help or increased vigilance display panel, the utility model discloses warning lamp box based on FPGA is with extensive on-the-spot programmable gate array FPGA as the whole main chip of handling an emergency and asking for help or increased vigilance lamp box, realizes communication protocol's analysis and the adjustting of the lighteness of luminous piece, to the luminous characteristic of the luminous piece of different colours, sets up corresponding adjustting of the lighteness curve respectively, has guaranteed the.

Description

Warning lamp box control circuit based on FPGA

Technical Field

The utility model relates to an alarm lamp technical field specifically is an alarm lamp box control circuit based on FPGA.

Background

The warning lamp is widely suitable for warning signs in various special places, and is also suitable for signal communication and direction indication of municipal administration, construction operation and monitoring, rescue and emergency workers. In recent years, the technology of warning lamps is introduced into the field of automobiles to detect and warn various performance parameters of the automobiles, so that the driving safety is effectively improved.

And the airborne warning display lamp box is used for providing various kinds of warning information for pilots. The alarm lamp box adopts the light-emitting block integrated by the light-emitting diode as the light-emitting device, and the technical difficulty of the alarm lamp box lies in that the consistency of the light-emitting efficiency of the light-emitting blocks of the alarm lamps with various colors is poor, and the uniformity of the brightness in the whole dimming brightness range is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an alarm lamp box control circuit based on FPGA, in order to solve the problem of proposing among the background art.

In order to realize the purpose, the utility model provides a following technical scheme:

The utility model provides a warning lamp box control circuit based on FPGA, includes power and interface processing board, signal processing board, light-emitting piece drive plate and reports an emergency and asks for help or increased vigilance display panel, power and interface processing board include power conversion unit, dual redundant CAN bus interface, dual redundant RS422 bus and dual redundant RS485 bus interface, and signal processing board, light-emitting piece drive plate and warning display panel are connected respectively to the power conversion unit, and signal processing board still connects light-emitting piece drive plate, dual redundant RS422 bus, dual redundant CAN bus interface and dual redundant RS485 bus interface respectively, and the light-emitting piece drive plate still connects and reports an emergency and asks for help or increased vigilance display panel.

As a further aspect of the present invention: and the signal processing board is internally provided with an FPGA module, a self-checking unit and a communication unit.

As a further aspect of the present invention: and an LED light-emitting block is arranged in the alarm display panel.

As a further aspect of the present invention: and a PWM brightness regulation control circuit is also arranged in the signal processing board.

As a further aspect of the present invention: the communication unit is a GPRS module.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses warning light box based on FPGA is with extensive field programmable gate array FPGA as the whole main processing chip who reports an emergency and asks for help or increased vigilance light box, realizes communication protocol's analysis and the adjustting of the lighteness of luminous piece, to the light-emitting characteristic of the luminous piece of different colours, sets up the adjustting of the lighteness curve that corresponds respectively, has guaranteed the homogeneity at whole control range internal brightness.

Drawings

Fig. 1 is a schematic diagram of the structure of an internal circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1, an alarm lamp box control circuit based on FPGA includes a power and interface processing board, a signal processing board, a light emitting block driving board and an alarm display panel, the power and interface processing board having a power conversion unit for converting an onboard external input power into a voltage level required inside the alarm box; the device is provided with a discrete alarm signal input processing unit, processes discrete quantity input from the outside and outputs the discrete quantity to a signal processing board; the redundant backup dual-bus processing unit is provided for carrying out interface end level conversion on input CAN bus, RS485, RS422 and other bus signals and outputting the signals to the signal processing board.

And the signal processing board is provided with a self-checking circuit, a PWM brightness regulation control circuit and a signal protocol analysis circuit functional unit. The self-checking circuit comprises a functional logic module, a photoelectric isolation circuit and a monitoring chip which are realized in the FPGA; and PWM waveform generation logic is realized in the FPGA.

And the light-emitting block driving board receives the PWM control signal of the signal processing board and provides a driving signal to the light-emitting block on the panel of the alarm box.

embodiment 2, on the basis of embodiment 1, the communication unit of this design is the GPRS module, and its data transmission efficiency is stable, and the commonality is strong, can not only communicate with computer, high in the clouds, can also communicate with mobile device.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a warning lamp box control circuit based on FPGA, includes power and interface processing board, signal processing board, light-emitting block drive plate and reports an emergency and asks for help or increased vigilance display panel, a serial communication port, power and interface processing board include power conversion unit, dual redundant CAN bus interface, dual redundant RS422 bus and dual redundant RS485 bus interface, and power conversion unit connects signal processing board, light-emitting block drive plate respectively and reports an emergency and asks for help or increased vigilance display panel, and signal processing board still connects light-emitting block drive plate, dual redundant RS422 bus, dual redundant CAN bus interface and dual redundant RS485 bus interface respectively, and light-emitting block drive plate still connects and reports an emergency and asks for help or increased vigilance display panel.

2. The FPGA-based warning lamp box control circuit of claim 1, wherein an FPGA module, a self-checking unit and a communication unit are arranged inside the signal processing board.

3. The FPGA-based warning light box control circuit of claim 2, wherein an LED light-emitting block is arranged inside the warning display panel.

4. The FPGA-based warning lamp box control circuit of claim 3, wherein a PWM brightness adjustment control circuit is further arranged inside the signal processing board.

5. The FPGA-based warning light box control circuit of claim 2, wherein the communication unit is a GPRS module.