CN207081935U - Projector's shutdown cooling monitoring system - Google Patents

Abstract

Shut down the utility model discloses a kind of projector and cool down monitoring system, including detection unit, timing unit, cooling unit, memory cell and control system, the detection unit and timing unit communication connection, timing unit, cooling unit and memory cell communicate to connect with control system respectively.The utility model is by using environment automatic detection and rationally detects postboost refrigerating mode, prevents that shutdown cool time is too short and damages machine.In the case of cool time deficiency of shutting down, it can remind how user improves on picture in start next time, improve cooling effect.Refrigerating mode automatically selects under non-artificial intervention, avoids the service life that layman arbitrarily changes refrigerating mode and reduces projector.

Description

Projector's shutdown cooling monitoring system

Technical field

The present invention relates to the device or equipment of photography, projection or viewing, more particularly to a kind of projector's shutdown cooling monitoring Control system.

Background technology

In the prior art, what people became to projector's dependence is more strong, more and more deep to the understanding of projector, Requirement to projector also more and more higher, projector using when have many good qualities, for example he can project to any direction, energy Sufficiently large picture is enough shown, makes him in public display place extensive uses such as education, but he also has the shortcomings that certain.

The when high-pressure sodium lamp that projector typically uses, high-pressure sodium lamp has lot of advantages, such as brightness height, cheap. Substantial amounts of heat can be released but he also has shortcoming, such as when he works, the life-span that he uses is very big with temperature relation, designer It is difficult to his temperature is controlled, and he must carry out cooling treatment before lighting and after lighting, not so can have a strong impact on him Service life.The shortcomings that this is also him.

Projector has to the sufficiently long time and goes to cool down bulb after shut down, and many users do not know these but, throwing Shadow machine uses complete rear at once with regard to shutting down or just being shut down in the very short time that worked in projector (being usually in 10 seconds), high pressure Temperature can reach 1000 degree when mercury lamp works, if can not be cooled down after shutdown can not only influence his service life, and it is high The bulb of temperature can raise the component temperature around it, and long-term so use can burn out these elements.Because these reasons are normal Often many projectors can be caused to burn out.

The content of the invention

For above-mentioned shortcoming and defect of the prior art, can rationally determine to throw it is an object of the invention to provide one kind Projector's shutdown cooling monitoring system of the postboost delay cut-off duration of shadow machine, so that cooling unit is in rational operating voltage Operated within range, so that high-pressure sodium lamp quickly cools down.

The purpose of the present invention is achieved through the following technical solutions：

A kind of projector shutdown cooling monitoring system, including detection unit, timing unit, cooling unit, memory cell and Control system, the detection unit and timing unit communication connection, timing unit, cooling unit and memory cell respectively with control System communicates to connect；Wherein：

Detection unit, the off signal of projector is detected, and off signal is transmitted to timing unit；

Timing unit, start timing after receiving the off signal of detection unit transmission, with fixed frequency to control system Timing result is sent, stops timing after projector's power-off；

Control system, the timing result of timing unit transmission is transmitted to memory cell storage；Projected by timing result The operating voltage of cooling unit is set during machine shutdown next time；

Memory cell, the timing result that storage control system transmission comes, when projector starts shooting again, memory cell will most The nearly timing result once stored is transmitted to control system；

Cooling unit, for the cooling of high pressure mercury lamp of projector, there are more gear mode of operations by changing operating voltage, Power supply circuit is powered according to the operating voltage that control system is set as cooling unit.

Preferably, in addition to display unit, the display unit communicates to connect with control system, and control system is by nearest one The duration of secondary shutdown delay cut-off is sent to display unit and shown.

Preferably, the cooling unit is fan, and the mode of operation of the fan is divided into high, normal, basic third gear, described high-grade Operating voltage is 11v~13v, and the operating voltage of the middle-grade is 8v~10v, and the low-grade operating voltage is 6~7v.

Preferably, the timing unit sends a timing result per 0.5s to control system.

Preferably, when a length of T of the shutdown delay cut-off of the last time is set：As T ＞ 90s, the work of the fan Pattern is low-grade mode of operation, and operating voltage is 6~7v；As 30s ＜ T ＜ 90s, the mode of operation of the fan is middle-grade work Operation mode, operating voltage are 8v~10v；As T ＜ 30s, the mode of operation of the fan is high-grade mode of operation, operating voltage For 11v~13v.

Compared with prior art, the embodiment of the present invention at least has advantages below：

1. use environment automatic detection simultaneously rationally detects postboost refrigerating mode, prevent that shutdown cool time is too short and damages Bad machine.

2. how projector can remind user in the case of cool time deficiency of shutting down, in start next time on picture Improve, improve cooling effect.

3. refrigerating mode automatically selects under non-artificial intervention, avoid layman and arbitrarily change refrigerating mode and drop The service life of low projector.

4. this patent main frame is to be directed to Software for Design, without increasing any hardware cost, realize simple.

Brief description of the drawings

Fig. 1 is the structural representation of projector of the present invention shutdown cooling monitoring system；

Fig. 2 is the schematic flow sheet of projector of the present invention shutdown cooling monitoring system.

Embodiment

To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings The component of example can be configured to arrange and design with a variety of.Therefore, the reality of the invention to providing in the accompanying drawings below The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made Every other embodiment, belongs to the scope of protection of the invention.

Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.

The invention will be further described with reference to the accompanying drawings and examples.

As shown in figure 1, Fig. 1, which shows that a kind of projector shuts down, cools down monitoring system, including detection unit, timing unit, Cooling unit, memory cell and control system, the detection unit and timing unit communication connection, timing unit, cooling unit Communicated to connect respectively with control system with memory cell；Wherein：

Detection unit, the off signal of projector is detected, and off signal is transmitted to timing unit；Specifically, it can pass through Voltage change judges whether projector shuts down.

Timing unit, start timing after receiving the off signal of detection unit transmission, with fixed frequency to control system Timing result is sent, stops timing after projector's power-off；Timework is completed by timer.

Control system, the timing result of timing unit transmission is transmitted to memory cell storage；Projected by timing result The operating voltage of cooling unit is set during machine shutdown next time；Control system typically uses single-chip microcomputer.

Memory cell, the timing result that storage control system transmission comes, when projector starts shooting again, memory cell will most The nearly timing result once stored is transmitted to control system；

Cooling unit, for the cooling of high pressure mercury lamp of projector, there are more gear mode of operations by changing operating voltage, Power supply circuit is powered according to the operating voltage that control system is set as cooling unit；

More than in addition to each functional module, in addition to display unit, the display unit communicate to connect with control system, control The duration of the shutdown delay cut-off of the last time is sent to display unit and shown by system.

The cooling unit is fan, and the mode of operation of the fan is divided into high, normal, basic third gear, the high-grade work electricity Press as 11v~13v, the operating voltage of the middle-grade is 8v~10v, and the low-grade operating voltage is 6~7v.

The timing unit sends a timing result per 0.5s to control system.

When a length of T of the last shutdown delay cut-off of setting：As T ＞ 90s, the mode of operation of the fan is low Shelves mode of operation, operating voltage is 6~7v；As 30s ＜ T ＜ 90s, the mode of operation of the fan is middle-grade mode of operation, Operating voltage is 8v~10v；As T ＜ 30s, the mode of operation of the fan is high-grade mode of operation, operating voltage be 11v~ 13v。

1：Low mode, cooling fan continues to work more than 90 seconds with low-grade operating voltage after shut down for projector, makes throwing Shadow machine bulb temperature slowly cools down.This pattern cooling effect is best, and noise is minimum during shutdown.

2：Middle-grade pattern, projector after shut down cooling fan middle-grade operating voltage work 30 seconds~90 seconds, make projection Machine bulb temperature comparatively fast cools down.This pattern cooling effect is preferable, and noise is higher during shutdown.

3：High range mode, projector make projector within the high-grade operating voltage of cooling fan works 30 seconds after shut down Bulb temperature most cools down soon.This pattern cooling effect is poor, noise highest during shutdown.

In addition, as T ＜ 10 seconds and when continuously occurring multiple, projector automatically selects high range mode, and is started shooting in next time When, control system can show delay cut-off duration after shutdown by display unit, and carry out the shutdown cooling of alarm projector Time is too short, asks user to extend the duration of delay cut-off after projector's shutdown.Alarm can directly pass through display flicker Mode is alarmed, and can also be alarmed by the light emitting diode and/or buzzer set in addition.

Fig. 2 is refer to, Fig. 2 shows the workflow of this monitoring system：

1. projector shuts down.

2. detection unit detects that projector shuts down, send instructions to timer and start timing.

3. timer updated a timing result every 0.5 second to control centre.Until projector, power-off terminates.

4. system detectio will cool down mould automatically to shutdown power-off time T ＞ 90 seconds are repeated recently during second of start Formula is arranged to low mode；System detectio to 30 ＜ T ＜ of shutdown power-off time 90 seconds are repeated recently during second of start, certainly It is dynamic that refrigerating mode is arranged to middle-grade pattern；Second system detectio when starting shooting to repeating shutdown power-off time T ＜ recently 30 seconds, refrigerating mode is arranged to high range mode automatically.When second starts shooting, system detectio to it is multiple recently (such as larger than etc. In 3 times) there are shutdown power-off time T ＜ 10 seconds, user's shutdown power-off time will be prompted too short by display unit, it is long-term so Projector can be damaged, it is proposed that Improving Measurements.

5. terminate.

The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in, It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims Enclose and be defined.

Claims (4)

1. A kind of 1. projector's shutdown cooling monitoring system, it is characterised in that：Including detection unit, timing unit, cooling unit, deposit Storage unit and control system, the detection unit and timing unit communication connection, timing unit, cooling unit and memory cell point Do not communicated to connect with control system.
2. 2. projector's shutdown cooling monitoring system according to claim 1, it is characterised in that：Also include display unit, institute Display unit is stated to communicate to connect with control system.
3. 3. projector's shutdown cooling monitoring system according to claim 1, it is characterised in that：The cooling unit is wind Fan, the mode of operation of the fan are divided into high, normal, basic third gear, and the high-grade operating voltage is 11v~13v, the work of the middle-grade It is 8v~10v to make voltage, and the low-grade operating voltage is 6~7v.
4. 4. projector's shutdown cooling monitoring system according to claim 1, it is characterised in that：The timing unit is per 0.5s A timing result is sent to control system.