CN110839150B - Switching device for protecting optical machine of projector - Google Patents
Switching device for protecting optical machine of projector Download PDFInfo
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- CN110839150B CN110839150B CN201910938252.1A CN201910938252A CN110839150B CN 110839150 B CN110839150 B CN 110839150B CN 201910938252 A CN201910938252 A CN 201910938252A CN 110839150 B CN110839150 B CN 110839150B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
Abstract
The invention discloses a switching device for protecting an optical machine of a projector, which comprises an input interface, an output interface, a change-over switch, a controller and an indicator, wherein the input interface is connected with the output interface; the input interface is communicated with the output interface through a selector switch; the signal input by the input interface is transmitted to the controller, so that the controller can judge whether a fault exists between the input interface and the change-over switch; the signal received by the output interface is transmitted to the controller, so that the controller can judge whether a fault exists between the output interface and the change-over switch; when a fault exists, the controller controls the change-over switch to be turned off and controls the indicator to give out an indication; therefore, when the detection work is carried out, the optical machine can be connected with the main board through the switching device, namely, when poor contact conditions exist, the conduction of the input interface and the output interface can be cut off, and the damage of the optical machine due to poor contact is avoided.
Description
Technical Field
The invention relates to the technical field of projectors, in particular to a switching device for protecting an optical machine of a projector.
Background
The projector needs to perform a lot of functional tests on the optical machine and the mainboard in the production process, the connection between the optical machine and the mainboard is completed through a single patch cord at present, the patch cord needs to be plugged and unplugged for many times in the production process, and because of the high precision and the high sensitivity of the DMD chip in the optical machine, when the patch cord is poorly connected with the mainboard or the optical machine, the chip inside the optical machine is easily damaged if the optical machine is powered on.
Disclosure of Invention
The invention aims to provide a switching device for protecting an optical machine of a projector so as to solve the problem that the optical machine is easy to damage during testing.
In order to solve the technical problem, the invention provides a switching device for protecting an optical machine of a projector, which comprises an input interface, an output interface, a change-over switch, a controller and an indicator, wherein the input interface is connected with the output interface; the input interface is communicated with the output interface through the selector switch; the signal input by the input interface is transmitted to the controller, so that the controller can judge whether a fault exists between the input interface and the change-over switch; the signal received by the output interface is transmitted to the controller, so that the controller can judge whether a fault exists between the output interface and the change-over switch; and when the fault exists, the controller controls the change-over switch to be switched off and controls the indicator to give out an indication.
In one embodiment, the switch is a normally closed switch.
In one embodiment, the indicators include an input indicator and an output indicator; when a fault exists between the input interface and the change-over switch, the controller controls the input indicator to give out an indication; when a fault exists between the output interface and the change-over switch, the controller controls the output indicator to give out an indication.
In one embodiment, the indicator is an indicator light or a buzzer.
In one embodiment, the switch is integrated with a static suppression circuit.
In one embodiment, the controller is provided with an input receiving port, an output receiving port, a switch control port and an indication control port, the input interface is electrically connected with the input receiving port, the output interface is electrically connected with the output receiving port, the switch is electrically connected with the switch control port, and the indicator is electrically connected with the indication control port.
In one embodiment, the adapter further includes a first input lead and a second input lead, the first input lead is connected between the input interface and the switch, the second input lead is connected between the switch and the input receiving port, and the second input lead is electrically connected to the first input lead.
In one embodiment, the adapter device further includes a first output lead and a second output lead, the first output lead is connected between the output interface and the switch, the second output lead is connected between the switch and the output receiving port, and the second output lead is electrically connected to the first output lead.
In one embodiment, the switching device further comprises an integrated circuit board, the switch and the controller are integrated on the integrated circuit board, and an input plug port is arranged on the integrated circuit board; the input end of the change-over switch is electrically connected with the input plug port, the input receiving port is electrically connected with the input plug port, and the input interface is connected with the input plug port in a flat cable plug-in manner.
In one embodiment, the integrated circuit board is further provided with an output plug port, an output end of the switch is electrically connected with the output plug port, the output receiving port is electrically connected with the output plug port, and the output interface is connected with the output plug port in a flat cable plug manner.
The invention has the following beneficial effects:
when the optical machine and the main board are applied, the optical machine and the main board can be switched on through the switching device, signals input by the input interface are transmitted to the controller, so that the controller can judge whether a fault exists between the input interface and the change-over switch, signals received by the output interface are transmitted to the controller, so that the controller can judge whether a fault exists between the output interface and the change-over switch, and the controller can judge whether a poor contact phenomenon exists between the input interface and the output interface; and when the fault exists, the controller controls the change-over switch to be switched off and controls the indicator to send out an indication, namely, when the poor contact condition exists, the conduction of the input interface and the output interface can be cut off, namely, the damage of the optical machine caused by the poor contact is avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a first embodiment of the adapter device of the present invention;
FIG. 2 is a schematic diagram of the diverter switch of FIG. 1;
FIG. 3 is a schematic diagram of the application state of FIG. 1;
FIG. 4 is a schematic structural view of a second embodiment of the adapter of the present invention;
FIG. 5 is a schematic structural view of a third embodiment of the adapter of the present invention;
fig. 6 is a schematic structural diagram of an adapter according to a fourth embodiment of the present invention.
The reference numbers are as follows:
11. an input interface; 12. an output interface; 13. a first input lead; 14. a second input lead; 15. a first output lead; 16. a second output lead; 17. an integrated circuit board; 18. inputting a plug port; 19. an output plug port;
20. a switch; 21. a static electricity suppressing circuit; 22. a power supply changeover switch; 23. a signal transfer switch;
30. a controller; 31. an input receiving port; 32. an output receiving port; 33. a switch control port; 34. indicating a control port;
40. an indicator; 41. inputting an indicator; 42. an output indicator;
50. a main board;
60. and (5) an optical machine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 3, the switching device of the protection light machine 60 according to the first embodiment of the present invention includes an input interface 11, an output interface 12, a switch 20, a controller 30 and an indicator 40; the input interface 11 is connected with the output interface 12 through a selector switch 20; the signal input by the input interface 11 is transmitted to the controller 30, so that the controller 30 can determine whether a fault exists between the input interface 11 and the change-over switch 20; the signal received by the output interface 12 is transmitted to the controller 30, so that the controller 30 can determine whether a fault exists between the output interface 12 and the change-over switch 20; when there is a fault, the controller 30 controls the switch 20 to be turned off and controls the indicator 40 to give an indication.
When in application, the main board 50 may be connected to the input interface 11, and the optical engine 60 may be connected to the output interface 12, so as long as the switch 20 is in a closed state, the main board 50 may send a control signal to control the optical engine 60, that is, the control signal is sent from the main board 50, and then passes through the input interface 11, the switch 20, and the output interface 12 in sequence, so as to be sent to the optical engine 60.
Therefore, the control signal sent by the main board 50 is the signal input by the input interface 11, and the signal is also sent to the controller 30, and if the controller 30 can receive the signal, it indicates that the path connection between the main board 50 and the switch 20 is normal, and there is no problem of poor contact; similarly, the signal received by the output interface 12 is also substantially a control signal sent by the main board 50, and the signal is also sent to the controller 30, and if the controller 30 can receive the signal, it indicates that the path connection between the switch 20 and the optical machine 60 is normal, and there is no problem of poor contact; therefore, the function test can be performed under the condition that the whole path connection between the main board 50 and the optical machine 60 is normal.
When the controller 30 cannot receive the signal input by the input interface 11 or the controller 30 cannot receive the signal received by the output interface 12, it indicates that there is a fault, there is poor contact between the main board 50 and the optical device 60, and the two cannot be normally conducted, so that the controller 30 controls the switch 20 to be switched off, and the indicator 40 reminds the operator, thereby avoiding performing a function test under the condition of poor contact, preventing the optical device 60 from being damaged, and practically solving the problem that the existing optical device 60 is easily damaged during the function test.
It should be noted that, in order to ensure that the main board 50 and the optical engine 60 are in a conducting state, the switch 20 may be preferably set to be a normally closed switch, and at this time, as long as the main board 50 is connected to the optical engine 60 through the adapter, the switch 20 can be ensured to be connected, so as to avoid the situation of misdetection caused by the non-closing of the switch 20.
Note that, in order to indicate the worker by using the indicator 40, the indicator 40 may be provided as an indicator lamp or a buzzer; for example, if the indicator 40 is an indicator light, it may be set that when the indicator light is on, there is a fault, and when the indicator light is off, there is a normal connection, whereas if the indicator 40 is a buzzer, it may be set that when the buzzer sounds, there is a fault, and when the buzzer does not sound, there is a normal connection.
It should be noted that, when performing the function test, in order to avoid the influence of static electricity on the test, the change-over switch 20 may be integrated with the static suppression circuit 21; for example, some functional chips are integrated with the switch 20 and the static suppression circuit 21, and the functional chips can be applied to the adapter device to realize the switch on/off and static suppression functions at the same time.
The change-over switch 20 is mainly used for realizing the conduction between the main board 50 and the optical machine 60, and the main board 50 and the optical machine 60 need to be connected by a power supply and conducted by a signal, so that the change-over switch 20 is not only used for realizing the on-off of a power supply path between the main board 50 and the optical machine 60, but also used for realizing the on-off of a signal path between the main board 50 and the optical machine 60; as shown in fig. 2, for example, the setting switch 20 includes a power switch 22 and a signal switch 23, the power switch 22 is used for turning on the power supply circuit, and the signal switch 23 is used for turning on the signal path.
A second embodiment of the adapter device according to the invention is shown in fig. 4, which corresponds substantially to the first embodiment, with the difference that the indicator 40 comprises an input indicator 41 and an output indicator 42; when a fault exists between the input interface 11 and the change-over switch 20, the controller 30 controls the input indicator 41 to give an indication; when there is a failure between the output interface 12 and the changeover switch 20, the controller 30 controls the output indicator 42 to give an indication.
That is, if the signal inputted through the input interface 11 cannot be sent to the controller 30, the controller 30 will determine that the input area is faulty, and at this time, the operator will know that the input area is faulty by controlling the input indicator 41, so that the operator only needs to check the area connected to the main board 50.
Similarly, if the signal received by the output interface 12 cannot be sent to the controller 30, the controller 30 will determine that the output area has a fault, and at this time, the output indicator 42 is controlled to send an indication, so that the worker can know that the output area has a fault, and only needs to check the area connected to the optical engine 60.
Therefore, the staff can accurately know the fault area without carrying out all-area inspection work, the workload of the staff is greatly reduced, and the efficiency of the staff for inspection is greatly improved.
Further, as described above, the indicator 40 may be configured as an indicator light or a buzzer, so that the input indicator 41 and the output indicator 42 may be configured as an indicator light or a buzzer, for example, the input indicator 41 and the output indicator 42 may be configured as an indicator light, or the input indicator 41 and the output indicator 42 may be configured as a buzzer, and one of the input indicator 41 and the output indicator 42 may be configured as an indicator light and the other one may be configured as a buzzer, which may be selected according to actual needs.
A third embodiment of the adapter device of the present invention is shown in fig. 5, which is substantially the same as the first embodiment, the controller 30 is provided with an input receiving port 31, an output receiving port 32, a switch control port 33 and an indication control port 34, the input interface 11 is electrically connected to the input receiving port 31, the output interface 12 is electrically connected to the output receiving port 32, the switch 20 is electrically connected to the switch control port 33, and the indicator 40 is electrically connected to the indication control port 34.
The third embodiment of the adapter device of the present invention is different from the first embodiment in that the adapter device further includes a first input lead 13 and a second input lead 14, the first input lead 13 is connected between the input interface 11 and the switch 20, the second input lead 14 is connected between the switch 20 and the input receiving port 31, and the second input lead 14 is electrically connected to the first input lead 13.
The connection mode is equivalent to that signals input by the input interface 11 are sent to the controller 30 from the switch 20, that is, only when the input interface 11 is smoothly connected with the switch 20, the controller 30 can receive the signals through the input receiving port 31, thereby providing important guarantee for the detection accuracy of the input area.
Similarly, the adapter device further includes a first output lead 15 and a second output lead 16, the first output lead 15 is connected between the output interface 12 and the switch 20, the second output lead 16 is connected between the switch 20 and the output receiving port 32, and the second output lead 16 is electrically connected to the first output lead 15.
The connection mode is equivalent to that the signal received by the output interface 12 is sent from the output interface 12 to the controller 30, that is, only when the output interface 12 is connected with the switch 20 smoothly, the controller 30 can receive the signal through the output receiving port 32, thereby providing an important guarantee for the detection accuracy of the output area.
A fourth embodiment of the adapter device of the present invention is shown in fig. 6, which is basically the same as the first embodiment, except that the adapter device further includes an integrated circuit board 17, the switch 20 and the controller 30 are integrated on the integrated circuit board 17, and the integrated circuit board 17 is provided with an input plug 18; the input end of the switch 20 is electrically connected with the input plug port 18, the input receiving port 31 is electrically connected with the input plug port 18, and the input interface 11 is connected with the input plug port 18 in a flat cable plug manner; the integrated circuit board 17 is further provided with an output plug port 19, the output end of the switch 20 is electrically connected with the output plug port 19, the output receiving port 32 is electrically connected with the output plug port 19, and the output interface 12 is connected with the output plug port 19 in a flat cable plug manner.
Therefore, the mode is that the switch 20 and the controller 30 are integrated on the same integrated circuit board 17, so that the connection line between the switch 20 and the controller 30 is completed during board manufacturing, and the signal transmission efficiency and the stability are high; at this time, the input plug port 18 and the main board 50 which can be shared by the switch 20 and the controller 30 are connected, and the output plug port 19 and the optical machine 60 which can be shared by the switch 20 and the controller 30 are connected, so that the detection efficiency is improved, and the detection accuracy is improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. An adapter device for protecting an optical machine of a projector is characterized in that,
the device comprises an input interface, an output interface, a selector switch, a controller and an indicator; the controller is electrically connected with the selector switch, the indicator is electrically connected with the controller, and the input interface is used for being electrically connected with a main board of the projector; the output interface is used for being electrically connected with an optical machine of the projector; the change-over switch is integrated with a static suppression circuit;
the input interface is communicated with the output interface through the selector switch; the control signal sent by the main board is a signal input by the input interface and is sequentially sent to the optical machine through the selector switch and the output interface;
the signal input by the input interface is also transmitted to the controller, so that the controller can judge whether the connection of a path between the main board of the projector and the change-over switch is normal or not; the signal received by the output interface is also transmitted to the controller, so that the controller can judge whether the connection of the path between the optical machine of the projector and the change-over switch is normal;
when a fault exists, the controller controls the change-over switch to be switched off and controls the indicator to give out an indication.
2. The transfer device of claim 1, wherein the diverter switch is a normally closed switch.
3. The adapter device according to claim 1,
the indicators include an input indicator and an output indicator;
when a fault exists between the main board and the change-over switch, the controller controls the input indicator to send out an indication;
when a fault exists between the light machine and the change-over switch, the controller controls the output indicator to give out an indication.
4. The adapter device of claim 3, wherein the indicator is an indicator light or a buzzer.
5. The adapter device according to claim 1, wherein the controller has an input port, an output port, a switch control port and an indication control port, the input port is electrically connected to the input port, the output port is electrically connected to the output port, the switch is electrically connected to the switch control port, and the indicator is electrically connected to the indication control port.
6. The transition device according to claim 5, further comprising a first input lead and a second input lead, wherein the first input lead is connected between the input interface and the switch, the second input lead is connected between the switch and the input receiving port, and the second input lead is electrically connected to the first input lead.
7. The adapter device of claim 5, further comprising a first output lead and a second output lead, wherein the first output lead is connected between the output interface and the switch, the second output lead is connected between the switch and the output receiving port, and the second output lead is electrically connected to the first output lead.
8. The transition device according to claim 5,
the switching device also comprises an integrated circuit board, the switch and the controller are integrated on the integrated circuit board, and an input plugging port is arranged on the integrated circuit board;
the input end of the change-over switch is electrically connected with the input plug port, the input receiving port is electrically connected with the input plug port, and the input interface is connected with the input plug port in a flat cable plug-in manner.
9. The adapter device according to claim 8, wherein the integrated circuit board is further provided with an output plug port, the output end of the switch is electrically connected to the output plug port, the output receiving port is electrically connected to the output plug port, and the output interface is connected to the output plug port by a flat cable plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938252.1A CN110839150B (en) | 2019-09-29 | 2019-09-29 | Switching device for protecting optical machine of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910938252.1A CN110839150B (en) | 2019-09-29 | 2019-09-29 | Switching device for protecting optical machine of projector |
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| Publication Number | Publication Date |
|---|---|
| CN110839150A CN110839150A (en) | 2020-02-25 |
| CN110839150B true CN110839150B (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910938252.1A Active CN110839150B (en) | 2019-09-29 | 2019-09-29 | Switching device for protecting optical machine of projector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599701A (en) * | 2009-07-02 | 2009-12-09 | 成都芯源系统有限公司 | Switching power supply with fault protection function and control method thereof |
| CN102331963A (en) * | 2010-07-13 | 2012-01-25 | 研祥智能科技股份有限公司 | Digital input and output interface test tool and test method |
| CN102681920A (en) * | 2011-03-16 | 2012-09-19 | 名硕电脑(苏州)有限公司 | Automatic switching system and method thereof |
| CN103390884A (en) * | 2013-07-23 | 2013-11-13 | 广州杰赛科技股份有限公司 | Power source detection control device and power supply control system |
| CN104730974A (en) * | 2013-12-19 | 2015-06-24 | 施耐德电器工业公司 | Actuator for a switching device |
-
2019
- 2019-09-29 CN CN201910938252.1A patent/CN110839150B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599701A (en) * | 2009-07-02 | 2009-12-09 | 成都芯源系统有限公司 | Switching power supply with fault protection function and control method thereof |
| CN102331963A (en) * | 2010-07-13 | 2012-01-25 | 研祥智能科技股份有限公司 | Digital input and output interface test tool and test method |
| CN102681920A (en) * | 2011-03-16 | 2012-09-19 | 名硕电脑(苏州)有限公司 | Automatic switching system and method thereof |
| CN103390884A (en) * | 2013-07-23 | 2013-11-13 | 广州杰赛科技股份有限公司 | Power source detection control device and power supply control system |
| CN104730974A (en) * | 2013-12-19 | 2015-06-24 | 施耐德电器工业公司 | Actuator for a switching device |
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| CN110839150A (en) | 2020-02-25 |
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