CN113053273A - Method for judging and controlling lighting of DLP micro-throw product optical machine through IIC communication - Google Patents

Abstract

The invention relates to the technical field of DLP micro projection, in order to realize the automatic judgment of whether an optical machine is normally lighted and automatically restart the lighting when the lighting fails, in particular to a method for judging and controlling the lighting of a DLP micro product optical machine through IIC communication, which comprises the following steps: step 1, a machine core master control sends a starting-up power-on signal to a DLP system and simultaneously establishes IIC connection with a DLP chip; step 2, if the DLP system is successfully started, the LED is lightened, and successful starting information is sent to the core master control; and 3, sending a starting signal to the DLP system again if the core master control does not receive the successful starting information within the preset time. By adopting the structure, whether the optical machine is normally lighted can be automatically judged, and the lighting can be automatically restarted when the lighting fails.

Description

Method for judging and controlling lighting of DLP micro-throw product optical machine through IIC communication

Technical Field

The invention relates to the technical field of DLP micro projection, in particular to a method for judging and controlling the lighting of a DLP micro product bare engine through IIC communication.

Background

In recent years, blowout type growth appears in the market of the micro-projector, a plurality of domestic micro-projection manufacturers have completed preheating the market in advance, miniaturized and portable micro-projection products are popularized in different client groups, and the micro-projector becomes a novel market mainstream.

At present, the mature development scheme of micro projection is developed based on a TI (digital light processing) DLP (digital light processing) system, core components mainly comprise a machine core main control system, a DLP power management system, a load optical machine and the like, and an additional FPGA (field programmable gate array) chip is possibly added according to the difference of optical machine resolution and the like. The whole working process is controlled by the main control of the machine core, the DLP driving control system and the power management system are switched on and off according to the main control signal, and the optical machine is further driven to be switched on by the DLP power management system.

When any link is in a problem, the lighting of the optical machine fails. However, based on the existing means, the method for detecting whether the optical machine is normally lighted up can only be observed by naked eyes, and the lighting up can be recovered only by manual restart, which wastes time and labor.

Disclosure of Invention

In order to realize the automatic judgment of whether the optical machine is normally lighted up and automatically restart the lighting up when the lighting up fails, the invention provides a method for judging and controlling the lighting up of a DLP micro-production optical machine through IIC communication.

The technical scheme adopted by the invention for solving the problems is as follows:

a method for judging and controlling the lighting of a DLP micro-throw product optical machine through IIC communication comprises the following steps:

step 1, a machine core master control sends a starting-up power-on signal to a DLP system and simultaneously establishes IIC connection with a DLP chip;

step 2, if the DLP system is successfully started, the LED is lightened, and successful starting information is sent to the core master control;

and 3, sending a starting signal to the DLP system again if the core master control does not receive the successful starting information within the preset time.

Further, the preset time is 5S.

Further, the startup success information is ACK information.

Compared with the prior art, the invention has the beneficial effects that: IIC connection is established when the core main control and the DLP chip are started, and IIC communication can be realized between the core main control and the DLP chip only when the system can normally light up; if the lighting fails, the core main control unit cannot receive the startup success information sent by the DLP chip, and at the moment, the core main control unit issues a startup command again. By adopting the mode, whether the system is started successfully or not can be automatically judged, and the main control of the machine core also issues a starting command again when the starting fails, so that automatic lighting is realized; the IIC communication is convenient and fast, and the cost is low.

Drawings

FIG. 1 is a flow chart of the method of the present invention;

fig. 2 is a prior art system framework diagram.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

A method for judging and controlling the lighting of a DLP micro-throw product optical machine through IIC communication comprises the following steps:

step 1, a machine core master control sends a starting-up power-on signal to a DLP system and simultaneously establishes IIC connection with a DLP chip;

step 2, if the DLP system is successfully started, the LED is lightened, and successful starting information is sent to the core master control;

and 3, sending a starting signal to the DLP system again if the core master control does not receive the successful starting information within the preset time.

Specifically, the LED micro-projector core main control chip of the embodiment adopts MSD6a358, the DLP control chip adopts DLPC3435, and the DLP power management chip adopts DLPA 3000. After the movement is powered ON and started, the MSD6A358 firstly sends a PROJ _ ON signal, namely a power-ON signal, to the DLP system, meanwhile, the MSD6A358 and the DLPC3435 establish IIC connection, and a power-ON command is sent to the DLPC 3435. At this time, if the DLP system fails, the LED cannot be smoothly turned ON, and the IIC also has an abnormal communication, so MSD6a358 cannot receive the ACK information sent back by DLPC3435 after 5S, and at this time MSD6a358 can determine that the LED is not turned ON, immediately send the PROJ _ ON signal to the DLP system again and reset DLP Power, and repeat the above steps until the light is successfully turned ON.

Claims (3)

1. A method for judging and controlling lighting of DLP micro-product bare engine through IIC communication is characterized by comprising the following steps:

step 1, a machine core master control sends a starting-up power-on signal to a DLP system and simultaneously establishes IIC connection with a DLP chip;

step 2, if the DLP system is successfully started, the LED is lightened, and successful starting information is sent to the core master control;

and 3, sending a starting signal to the DLP system again if the core master control does not receive the successful starting information within the preset time.

2. The method as claimed in claim 1, wherein the predetermined time is 5S for determining and controlling the lighting of the DLP micro product opto-mechanical system through IIC communication.

3. The method as claimed in claim 1, wherein the booting success information is ACK information.

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