CN204288118U - Industrial computer power on-off control circuit - Google Patents
Industrial computer power on-off control circuit Download PDFInfo
- Publication number
- CN204288118U CN204288118U CN201420742741.2U CN201420742741U CN204288118U CN 204288118 U CN204288118 U CN 204288118U CN 201420742741 U CN201420742741 U CN 201420742741U CN 204288118 U CN204288118 U CN 204288118U
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- relay
- light emitting
- electric capacity
- diode
- emitting diode
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Abstract
A kind of industrial computer power on-off control circuit, comprise display, Switching Power Supply, relay K M, electric capacity C1, electric capacity C2, diode D1, protection diode D2, light emitting diode D3 and linked switch, the coil of described relay K M is connected with light emitting diode D3, electric capacity C1 is in parallel with light emitting diode D3, the coils from parallel connection of coils of protection diode D2 and relay K M, coil and the light emitting diode D3 place branch circuit parallel connection of electric capacity C2 and relay K M form the first branch road; For the first branch road provides voltage after the 12V voltage output end series diode D2 of described Switching Power Supply, form the first loop; The normally opened contact of described relay K M is serially connected on monitor power supply loop.After the utility model ensure that Host Shutdown, display is thoroughly closed, and can manual-lock, and principle is simple, and reliability is strong.
Description
Technical field
The utility model relates to a kind of industrial computer power on-off control circuit.
Background technology
Industrial computer is mainly used in the aspect such as Industry Control, test, its structure is different according to application difference, mainly comprise display and main frame, for the power supply of display and main frame, mainly contain two kinds of modes at present: one is that display and main frame are powered respectively, another kind is that display and main frame share a Switching Power Supply.A Switching Power Supply is shared for display and main frame, is also provided with power knob over the display, and is provided with power light, by software systems to after main frame shutdown, need the power knob pressed again on display, be similar to computer monitor.But in use find, operating personnel can not manually go to turn off display power supply substantially, only namely left after main frame shutdown by software systems, therefore there is electric energy loss in display, do not meet energy-conserving and environment-protective theory.
Utility model content
In order to overcome existing the problems referred to above, the purpose of this utility model is to provide a kind of industrial computer power on-off control circuit thoroughly automatically turning off display power supply while turning off host power supply.
In order to solve the problem, the utility model is by the following technical solutions: a kind of industrial computer power on-off control circuit, comprise display and Switching Power Supply, it is characterized in that: also comprise relay K M, electric capacity C1, electric capacity C2, diode D1, protection diode D2 and light emitting diode D3, the coil of described relay K M is connected with light emitting diode D3, electric capacity C1 is in parallel with light emitting diode D3, the coils from parallel connection of coils of protection diode D2 and relay K M, the coil of electric capacity C2 and relay K M and light emitting diode D3 place branch circuit parallel connection; The first loop is formed with described relay K M, electric capacity C1, electric capacity C2, diode D1 together with light emitting diode D3 after the 12V voltage output end series diode D2 of described Switching Power Supply; The normally opened contact of described relay K M is serially connected on monitor power supply loop.
Further, in order to make this circuit, there is stronger reliability, it also comprises the linked switch of band dynamic circuit breaker and moving together contact, a series connection linked switch break contact on described first loop, the moving together contact of linked switch is in parallel with the normally opened contact of relay K M, like this, can manual operation after relay circuit goes wrong.
Further, the button of described linked switch is arranged over the display.
Further, described light emitting diode D3 is arranged over the display.
The beneficial effects of the utility model are: it achieves the automatic cut-out of display circuit by relay, and after ensure that Host Shutdown, display is thoroughly closed; It is also provided with linked switch, can manual-lock when auto shut off circuit fault; In addition, light emitting diode D3 can discharge to relay coil, again can as the power light of display.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described further:
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated:
As shown in Figure 1, specific embodiment of the utility model comprises display, Switching Power Supply, relay K M, electric capacity C1, electric capacity C2, diode D1, protection diode D2, light emitting diode D3 and is with the linked switch SB of dynamic circuit breaker and moving together contact.
The coil of described relay K M is connected with light emitting diode D3, and electric capacity C1 is in parallel with light emitting diode D3, the coils from parallel connection of coils of protection diode D2 and relay K M, the coil of electric capacity C2 and relay K M and light emitting diode D3 place branch circuit parallel connection.The first loop is formed with described relay K M, electric capacity C1, electric capacity C2, diode D1 and light emitting diode D3 after the 12V voltage output end series diode D2 of described Switching Power Supply.The normally opened contact of described relay K M is serially connected in from the monitor power supply loop of Switching Power Supply extraction.The break contact of a series connection linked switch SB on described first loop, the moving together contact of linked switch SB is in parallel with the normally opened contact of relay K M, like this, can manual operation after relay place circuit goes wrong.
Conveniently operation and display display power supply state directly perceived, button and the light emitting diode D3 of described linked switch are all arranged over the display.
Principle of work of the present utility model is: when starting shooting, and 12V power supply to electric capacity C1, C2 charging, after voltage reaches the pick-up voltage of relay K M, causes relay K M action adhesive through diode D1, and its normally opened contact is closed has connected monitor power supply loop.Along with the further rising of electric capacity C1 both end voltage, provide voltage by light emitting diode D3 to the coil of relay K M, such relay K M is just controlled in attracting state, ensure that the reliability of monitor power supply.After operating personnel are shut down by software systems, because the electric charge that electric capacity C2 fills can not disappear immediately, by the coil discharge of light emitting diode D3 to relay K M, after approximately passing through the time delay in nearly 5 seconds, electric charge above electric capacity C2 drains, the normally opened contact of relay K M disconnects, and the power supply of display is just cut-off.
The above is preferred implementation of the present utility model; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also make some improvements and modifications, these improvements and modifications are also regarded as protection domain of the present utility model.
Claims (4)
1. an industrial computer power on-off control circuit, comprise display and Switching Power Supply, it is characterized in that: also comprise relay K M, electric capacity C1, electric capacity C2, diode D1, protection diode D2 and light emitting diode D3, the coil of described relay K M is connected with light emitting diode D3, electric capacity C1 is in parallel with light emitting diode D3, the coils from parallel connection of coils of protection diode D2 and relay K M, the coil of electric capacity C2 and relay K M and light emitting diode D3 place branch circuit parallel connection; The first loop is formed with described relay K M, electric capacity C1, electric capacity C2, diode D1 together with light emitting diode D3 after the 12V voltage output end series diode D2 of described Switching Power Supply; The normally opened contact of described relay K M is serially connected on monitor power supply loop.
2. industrial computer power on-off control circuit according to claim 1, it is characterized in that: it also comprises the linked switch of band dynamic circuit breaker and moving together contact, a series connection linked switch break contact on described first loop, the moving together contact of linked switch is in parallel with the normally opened contact of relay K M.
3. industrial computer power on-off control circuit according to claim 2, is characterized in that: the button of described linked switch is arranged over the display.
4. industrial computer power on-off control circuit according to claim 3, is characterized in that: described light emitting diode D3 is arranged over the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742741.2U CN204288118U (en) | 2014-11-29 | 2014-11-29 | Industrial computer power on-off control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742741.2U CN204288118U (en) | 2014-11-29 | 2014-11-29 | Industrial computer power on-off control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204288118U true CN204288118U (en) | 2015-04-22 |
Family
ID=52871255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420742741.2U Expired - Fee Related CN204288118U (en) | 2014-11-29 | 2014-11-29 | Industrial computer power on-off control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204288118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360728A (en) * | 2014-11-29 | 2015-02-18 | 济南职业学院 | Industrial computer power supply switch control circuit |
-
2014
- 2014-11-29 CN CN201420742741.2U patent/CN204288118U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360728A (en) * | 2014-11-29 | 2015-02-18 | 济南职业学院 | Industrial computer power supply switch control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151129 |