CN103592865B - A kind of on-and-off control system, on-off control method and safety switch electromechanical source - Google Patents
A kind of on-and-off control system, on-off control method and safety switch electromechanical source Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of on-and-off control system, method and safety switch electromechanical source, this system comprises controller, switching on and shutting down control circuit and power switch, wherein: switching on and shutting down control circuit is connected with controller with the Enable Pin of Novel work power supply, power switch respectively, when power switch closes, periodically send activation signal to Enable Pin, send closed characterization signal to controller, when power switch disconnects, stop sending activation signal to Enable Pin and sending disconnection characterization signal to controller; Controller is connected with Enable Pin with mainboard respectively, when receiving closed characterization signal, send start signal to mainboard, periodically send activation signal to Enable Pin, when receiving disconnection characterization signal, shutdown signal is sent to mainboard, and when determining that main board system is closed, stop sending activation signal to Enable Pin, to ensure that the X86 computing machine after changing working power can realize safety open shutdown.
Description
Technical field
The present invention relates to embedded system development technical field, more particularly, relate to a kind of on-and-off control system, a kind of on-off control method and a kind of safety switch electromechanical source.
Background technology
ATX power supply is the main flow working power of the embedded computer (being called for short " X86 computing machine ") based on X86-based platform, but the adaptive faculty of ATX power supply to harsh environments is poor, causes X86 computer application field to receive very big restriction.
For this reason, those skilled in the art plan to adopt the Novel work power supply with higher reliability to replace described ATX power supply, but the limitation part of the program is: in X86 computing machine, on-and-off control system for controlling the switching on and shutting down of described X86 computer security mainly designs towards ATX power supply, therefore the words of the working power of X86 computing machine are directly changed, described on-and-off control system will inevitably be made normally to work, easily cause the main board system of X86 computing machine to collapse.
Summary of the invention
In view of this, the invention provides a kind of on-and-off control system, on-off control method and safety switch electromechanical source, to ensure that the X86 computing machine after changing working power can realize safety open shutdown.
A kind of on-and-off control system, comprises controller, switching on and shutting down control circuit and power switch, wherein:
Described switching on and shutting down control circuit is connected with described controller with the Enable Pin of Novel work power supply, described power switch respectively, for when described power switch closes, periodically send activation signal to described Enable Pin, and send the closed characterization signal characterizing described power switch and closed to described controller; And when described power switch disconnects, stop sending activation signal to described Enable Pin, and send the disconnection characterization signal characterizing described power switch and disconnected to described controller;
Described controller is connected with described Enable Pin with the mainboard of X86 computing machine respectively, for when receiving described closed characterization signal, sends the start signal for starting main board system to described mainboard, and periodically sends activation signal to described Enable Pin; And when receiving described disconnection characterization signal, send the shutdown signal for closing described main board system to described mainboard, and when determining that described main board system is closed, stop sending activation signal to described Enable Pin.
Alternatively, after described controller sends described shutdown signal to described mainboard, also for when determining described main board system machine in heaven, stop sending activation signal to described Enable Pin.
Wherein, described power switch comprises double-point double-throw switch.
Wherein, described switching on and shutting down control circuit comprises: NMOS tube, diode, the first resistance and the second resistance; Wherein, described double-point double-throw switch comprises the first terminals and the 3rd terminals, the second terminals being positioned at another cutter and the 4th terminals that are positioned at same cutter, and described first terminals and described second terminals are positioned at the same side; One termination electric power incoming line of described first resistance, the other end connect a pin of described first terminals and described controller respectively; The source grounding of described 3rd terminals, described 4th terminals and described NMOS tube; The negative pole of diode described in described second wiring termination; The positive pole of described diode connects the drain electrode of described Enable Pin and described NMOS tube respectively; One end ground connection of described second resistance, the other end connect another pin of described controller and the grid of described NMOS tube respectively.
Alternatively, described on-and-off control system also comprises: the filtering circuit be connected with the supply terminals of described controller.
Alternatively, described on-and-off control system also comprises: the communication interface circuit be connected with described controller; Wherein said communication interface circuit can comprise: jtag interface circuit.
Alternatively, described on-and-off control system also comprises: the clock circuit be connected with the clock pulse input terminal of described controller.
A kind of on-off control method, described method is applied to any one on-and-off control system above-mentioned, and described method comprises start-up control method and shutdown control method, wherein:
Described start-up control method comprises:
When power switch closes, switching on and shutting down control circuit periodically sends activation signal to the Enable Pin of Novel work power supply, and sends the closed characterization signal characterizing described power switch and closed to controller; Described controller, when receiving described closed characterization signal, sends the start signal for starting main board system to mainboard; And periodically send activation signal to described Enable Pin;
Described shutdown control method comprises:
When described power switch disconnects, described ON-OFF control circuit stops sending activation signal, and sends the disconnection characterization signal characterizing described power switch and disconnected to described controller; Described controller, when receiving described disconnection characterization signal, sends the shutdown signal for cutting out described main board system to described mainboard; When described controller determines that described main board system is closed, stop sending activation signal to described Enable Pin.
Alternatively, described to after described mainboard sends the shutdown signal for closing described main board system, described shutdown control method also comprises: described controller, when determining described main board system machine in heaven, stops sending activation signal to described Enable Pin.
A kind of safety switch electromechanical source, comprising: Novel work power supply and any one on-and-off control system above-mentioned; Wherein said Novel work power supply comprises: the power module that the power module that output voltage is+3.3V, output voltage are+5V, output voltage are the power module of+12V and/or output voltage is the power module of-12V; The Enable Pin of described Novel work power supply is Low level effective and described Enable Pin is equiped with pull-up resistor.
As can be seen from above-mentioned technical scheme, the embodiment of the present invention is when staff's closed electrical source switch, periodically activation signal is sent to the Enable Pin of Novel work power supply by switching on and shutting down control circuit, and sent the start signal starting main board system to the mainboard of X86 computing machine by controller, thus reach ensureing just to control the object that described main board system enters duty under described Novel work power supply starts the prerequisite of normal power supply, achieve the safety opening terminal of described X86 computing machine; In addition, described controller after detecting that described power switch is closed, also for periodically sending activation signal to described Enable Pin, until stop when determining that described main board system is closed.When staff disconnects described power switch, described switching on and shutting down control circuit stops continuing to export activation signal, described controller sends shutdown signal to described mainboard simultaneously, now, because described Enable Pin still can receive the activation signal from described controller, therefore the duty of described Novel work power supply can not change immediately because of the disconnection of described power switch, but stop just stopping power supply when sending activation signal at described controller, thus reach ensure described main board system deactivate completely state prerequisite under just control the object of described Novel work power outage, achieve the safety shutdown of described X86 computing machine.
In sum, the embodiment of the present invention is design towards described Novel work power supply completely, therefore reach when described X86 computing machine original ATX power supply is replaced by described Novel work power supply, still can ensure that described X86 computing machine realizes the technique effect of safety open shutdown.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of on-and-off control system structural representation disclosed in the embodiment of the present invention one;
Fig. 2 a-2b is the embodiment of the present invention two another on-and-off control system structural representation disclosed;
Fig. 3 is a kind of Novel work power supply architecture schematic diagram disclosed in the embodiment of the present invention three;
Fig. 4 is a kind of on-off control method process flow diagram disclosed in the embodiment of the present invention four.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one:
See Fig. 1, the embodiment of the present invention one discloses a kind of on-and-off control system, to ensure that the X86 computing machine after changing working power can realize safety open shutdown, comprising: controller 100, switching on and shutting down control circuit 200 and power switch 300, wherein:
Switching on and shutting down control circuit 200 is connected with controller 100 with the Enable Pin EN of the Novel work power supply 400 of X86 computing machine, power switch 300 respectively, for when power switch 300 closes, periodically send activation signal to Enable Pin EN, and send closed characterization signal (described closed characterization signal is closed for characterizing power switch 300) to controller 100; And when power switch 300 disconnects, stop sending activation signal to Enable Pin EN, and send disconnection characterization signal (described disconnection characterization signal disconnects for characterizing power switch 300) to controller 100;
Controller 100 is connected with Enable Pin EN with the mainboard 500 of X86 computing machine respectively, for when receiving described closed characterization signal, sends the start signal for starting main board system to mainboard 500, and periodically sends activation signal to Enable Pin EN; And when receiving described disconnection characterization signal, send the shutdown signal for closing described main board system to mainboard 500, and when determining that described main board system is closed, stop sending activation signal to Enable Pin EN.
Seen from the above description, the present embodiment one is when staff's closed electrical source switch 300, periodically activation signal is sent to Enable Pin EN by switching on and shutting down control circuit 200, and send start signal by controller 100 to mainboard 500, thus reach ensureing just to control the object that main board system enters duty under Novel work power supply 400 starts the prerequisite of normal power supply, achieve the safety opening terminal of X86 computing machine; In addition, controller 100 after detecting that power switch 300 is closed, also for periodically sending activation signal, until when determining that described main board system is closed to Enable Pin EN;
When staff's disconnecting power switch 300, switching on and shutting down control circuit 200 stops continuing to export activation signal, shutdown signal is sent to mainboard 500 with Time Controller 100, now, because Enable Pin EN still can receive the activation signal that controller 100 sends, therefore the duty of Novel work power supply 400 can not change immediately because of the disconnection of power switch 300, but stop just stopping power supply when sending activation signal at controller 100, thus reach ensure described main board system deactivate completely state prerequisite under the object of just control Novel work power outage, achieve the safety shutdown of described X86 computing machine.
Embodiment two:
Based on embodiment one, see Fig. 2 a-2b, the embodiment of the present invention two discloses another on-and-off control system, to ensure that the X86 computing machine after changing working power can realize safety open shutdown, comprise (as shown in Figure 2 a): controller 100, switching on and shutting down control circuit 200 and power switch 300, wherein:
After controller 100 sends described shutdown signal to mainboard 500, also for when determining described main board system machine in heaven, stop sending activation signal to Enable Pin EN.
When system in case of system halt, controller 100 cannot judge to obtain the buttoned-up judged result of described main board system all the time, cause Novel work power supply 400 when system in case of system halt still continued power, waste electric energy, therefore the present embodiment two is when described system in case of system halt being detected, make controller 100 stop sending activation signal, forcing Novel work power supply 400 to quit work, namely force X86 computer shutdown.Concrete, controller 100 can wait for 1 minute after sending described shutdown signal to mainboard 500, if fail to read the buttoned-up characterization signal of described main board system from mainboard 500 after 1 minute, is then judged to be system in case of system halt.
In addition, as preferably, the on-and-off control system described in the present embodiment two also can comprise (as shown in Figure 2 a): filtering circuit 600, clock circuit 700 and communication interface circuit 800; Wherein,
Filtering circuit 600 is connected with the supply terminals of controller 100, for the power supply noise of filter controller 100;
Clock circuit 700 is connected with the clock pulse input terminal of controller 100, for providing local clock for controller 100; Concrete, clock circuit 700 can select 32.768KHz clock crystal oscillator to build;
Communication interface circuit 800 is connected with controller 100, and for providing download program interface for controller 100, concrete, communication interface circuit 800 can select jtag interface circuit.
For the Enable Pin EN of Novel work power supply 400 for Low level effective, the on-and-off control system described in the present embodiment two, specifically can adopt following circuit structure (as shown in Figure 2 b):
Power switch 300 adopts double-point double-throw switch SW1, its 4 terminals comprise: the first terminals A1 and the 3rd terminals A3, the second terminals A2 being positioned at another cutter and the 4th terminals A4 that are positioned at same cutter, and the first terminals A1 and the second terminals A2 is positioned at the same side of double-point double-throw switch SW1;
Switching on and shutting down control circuit 200 comprises: NMOS tube U2, diode D1, the first resistance R1 and the second resistance R2; Concrete, a termination electric power incoming line of the first resistance R1, the other end connect 24 pin of the first terminals A1 and controller 100 respectively; The source S of NMOS tube U2, the 3rd terminals A3 and the 4th terminals A4 ground connection; Second terminals A2 connects the negative pole of diode D1; The positive pole of diode D1 connects the drain D of Enable Pin EN and NMOS tube U2 respectively; One end ground connection of the second resistance R2, the other end connect 25 pin of controller 100 and the grid of NMOS tube U2 respectively; Wherein, the model of diode D1 can be selected as 1N4148, and the model of NMOS tube U2 can be selected as ME2302, and the first resistance R1 and/or the second resistance R2 can select resistance to be the resistance of 100K Ω, power 1/4W;
40 pin of controller 100,41 pin are corresponding in turn to 42 pin and are connected with SUS_S5# pin with the SUS_S3# pin of mainboard 500, SUS_S4# pin that (SUS_S3# pin, SUS_S4# pin and SUS_S5# pin are board status output pin, when main board system is closed, SUS_S3# pin, SUS_S4# pin and SUS_S5# pin are low level state); 44 pin of controller 100 and the switching on and shutting down of mainboard 500 control pin PWR_BTN# pin and are connected, and described PWR_BTN# pin is for the start signal that receives controller 100 and send and shutdown signal; Wherein, controller 100 can specifically select model to be the CPLD(ComplexProgrammableLogicDevice of LC4064V-5T44C, CPLD), but do not limit to.
Filtering circuit 600 comprises: the first electric capacity C1 be in parallel, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4; Concrete, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3 and/or the 4th electric capacity C4 can select that capacitance is 0.1Uf, withstand voltage is the electric capacity of 25V.
The principle of work of this circuit is specially:
When double-point double-throw switch SW1 closes, Enable Pin EN is successively by diode D1, the second terminals A2 and the 4th terminals A4 ground connection, and the level state of Enable Pin EN is successfully activated by high step-down, Enable Pin EN thus; Simultaneously along with the connection of the first terminals A1 and the 3rd terminals A3, the level state of 24 pin of controller 100 can be changed according to this level by high step-down, thus controller 100 and successfully detects that double-point double-throw switch SW1 is current closed;
And then, controller 100 control PWR_BTN# pin from 44 pin to mainboard 500 export start signal, main board system start; Meanwhile, controller 100 controls 25 pin and exports high level signal, and thus, the level state of the grid G of NMOS tube U2 is uprised by low, and the level state of now NMOS tube U2 conducting, drain D is dragged down;
When double-point double-throw switch SW1 disconnects, although Enable Pin EN can not more successively by diode D1, the second terminals A2 and the 4th terminals A4 success ground connection, Enable Pin EN still can receive low level signal that drain D sends and keep state of activation;
Device 100 to be controlled controls 44 pin when to export after shutdown signal to the PWR_BTN# pin of mainboard 500 and to detect that 40 pin, 41 pin and 42 pin all receive low level signal (or after waiting for 1 minute, 40 pin, 41 pin and 42 pin still fail all to receive low level signal), 25 pin output low level signals can be controlled, the level signal of now NMOS tube U2 cut-off, drain D is uprised by low, thus, the Enable Pin EN be connected with drain D enters deactivation status, Novel work power supply 400 is stopped power supply.
Embodiment three:
The embodiment of the present invention three discloses a kind of safety switch electromechanical source, to realize the safety open shutdown of X86 computing machine, comprising: Novel work power supply and embodiment one or any one on-and-off control system described in embodiment two;
Wherein, see Fig. 3, described Novel work power supply comprises: the power module U6 of the power module U4 that the power module U3 that output voltage is+3.3V, output voltage are+5V, output voltage to be the power module U4 of+12V and output voltage be-12V, the VIN wherein shown in Fig. 3 represents the supply terminals of described Novel work power supply.
Wherein, the Enable Pin of described Novel work power supply is Low level effective and described Enable Pin is equiped with pull-up resistor, to ensure when described Enable Pin does not receive activation signal, described Enable Pin remains at high level state, described Novel work power good remains on non-power supply state.
Embodiment four:
See Fig. 4, the embodiment of the present invention four discloses a kind of on-off control method, described method is applied to the on-and-off control system described in above-mentioned any embodiment, to ensure that the X86 computing machine after changing working power can realize safety open shutdown, concrete, described method comprises start-up control method and shutdown control method, wherein:
Described start-up control method comprises:
Step 401: when power switch closes, switching on and shutting down control circuit periodically sends activation signal to the Enable Pin of Novel work power supply, and sends the closed characterization signal characterizing described power switch and closed to controller;
Step 402: described controller, when receiving described closed characterization signal, sends the start signal for starting main board system to mainboard; And periodically send activation signal to described Enable Pin;
Accept step 402, described shutdown control method comprises:
Step 403: when described power switch disconnects, described ON-OFF control circuit stops sending activation signal, and sends the disconnection characterization signal characterizing described power switch and disconnected to described controller;
Step 404: described controller, when receiving described disconnection characterization signal, sends the shutdown signal for cutting out described main board system to described mainboard;
Step 405: when described controller determines that described main board system is closed, stops sending activation signal to described Enable Pin.
In addition, as preferably, after described 404, also comprise (still see Fig. 4):
Step 406: when described main board system machine in heaven determined by described controller, stop sending activation signal to described Enable Pin.
For on-off control method disclosed in embodiment, because it is corresponding with on-and-off control system disclosed in embodiment, so description is fairly simple, relevant part is see the related description of described on-and-off control system part.
In sum, the embodiment of the present invention is when staff's closed electrical source switch, periodically activation signal is sent to the Enable Pin of Novel work power supply by switching on and shutting down control circuit, and sent the start signal starting main board system to the mainboard of X86 computing machine by controller, thus reach ensureing just to control the object that described main board system enters duty under described Novel work power supply starts the prerequisite of normal power supply, achieve the safety opening terminal of described X86 computing machine; In addition, described controller after detecting that described power switch is closed, also for periodically sending activation signal to described Enable Pin, until stop when determining that described main board system is closed.When staff disconnects described power switch, described switching on and shutting down control circuit stops continuing to export activation signal, described controller sends shutdown signal to described mainboard simultaneously, now, because described Enable Pin still can receive the activation signal from described controller, therefore the duty of described Novel work power supply can not change immediately because of the disconnection of described power switch, but stop just stopping power supply when sending activation signal at described controller, thus reach ensure described main board system deactivate completely state prerequisite under just control the object of described Novel work power outage, achieve the safety shutdown of described X86 computing machine.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the embodiment of the present invention, can realize in other embodiments.Therefore, the embodiment of the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an on-and-off control system, is characterized in that, comprises controller, switching on and shutting down control circuit and power switch, wherein:
Described switching on and shutting down control circuit is connected with described controller with the Enable Pin of Novel work power supply, described power switch respectively, for when described power switch closes, periodically activation signal is sent to described Enable Pin, and determine described Novel work power supply normal power supply time, send to described controller and characterize the closed closed characterization signal of described power switch; And when described power switch disconnects, stop sending activation signal to described Enable Pin, and send the disconnection characterization signal characterizing described power switch and disconnected to described controller;
Described controller is connected with described Enable Pin with the mainboard of X86 computing machine respectively, for when receiving described closed characterization signal, sends the start signal for starting main board system to described mainboard, and periodically sends activation signal to described Enable Pin; And when receiving described disconnection characterization signal, send the shutdown signal for closing described main board system to described mainboard, and when determining that described main board system is closed, stop sending activation signal to described Enable Pin.
2. on-and-off control system according to claim 1, is characterized in that, after described controller sends described shutdown signal to described mainboard, also for when determining described main board system machine in heaven, stops sending activation signal to described Enable Pin.
3. on-and-off control system according to claim 1 and 2, is characterized in that, described power switch comprises double-point double-throw switch.
4. on-and-off control system according to claim 3, is characterized in that, described switching on and shutting down control circuit comprises: NMOS tube, diode, the first resistance and the second resistance;
Wherein, described double-point double-throw switch comprises the first terminals and the 3rd terminals, the second terminals being positioned at another cutter and the 4th terminals that are positioned at same cutter, and described first terminals and described second terminals are positioned at the same side;
One termination electric power incoming line of described first resistance, the other end connect a pin of described first terminals and described controller respectively; The source grounding of described 3rd terminals, described 4th terminals and described NMOS tube; The negative pole of diode described in described second wiring termination; The positive pole of described diode connects the drain electrode of described Enable Pin and described NMOS tube respectively; One end ground connection of described second resistance, the other end connect another pin of described controller and the grid of described NMOS tube respectively.
5. on-and-off control system according to claim 1 and 2, is characterized in that, described on-and-off control system also comprises: the filtering circuit be connected with the supply terminals of described controller.
6. on-and-off control system according to claim 1 and 2, is characterized in that, described on-and-off control system also comprises: the communication interface circuit be connected with described controller;
Wherein, described communication interface circuit comprises: jtag interface circuit.
7. on-and-off control system according to claim 1 and 2, is characterized in that, described on-and-off control system also comprises: the clock circuit be connected with the clock pulse input terminal of described controller.
8. an on-off control method, is characterized in that, described method is applied to the on-and-off control system according to any one of claim 1-7, and described method comprises start-up control method and shutdown control method, wherein:
Described start-up control method comprises:
When power switch closes, switching on and shutting down control circuit periodically sends activation signal to the Enable Pin of Novel work power supply, and determine described Novel work power supply normal power supply time, send to controller and characterize the closed closed characterization signal of described power switch;
Described controller, when receiving described closed characterization signal, sends the start signal for starting main board system to mainboard; And periodically send activation signal to described Enable Pin;
Described shutdown control method comprises:
When described power switch disconnects, described ON-OFF control circuit stops sending activation signal, and sends the disconnection characterization signal characterizing described power switch and disconnected to described controller;
Described controller, when receiving described disconnection characterization signal, sends the shutdown signal for cutting out described main board system to described mainboard;
When described controller determines that described main board system is closed, stop sending activation signal to described Enable Pin.
9. on-off control method according to claim 8, is characterized in that, described to after described mainboard sends the shutdown signal for closing described main board system, also comprises:
Described controller, when determining described main board system machine in heaven, stops sending activation signal to described Enable Pin.
10. a safety switch electromechanical source, is characterized in that, comprising: Novel work power supply and the on-and-off control system according to any one of claim 1-7; Wherein,
Described Novel work power supply comprises: the power module that the power module that output voltage is+3.3V, output voltage are+5V, output voltage are the power module of+12V and/or output voltage is the power module of-12V;
The Enable Pin of described Novel work power supply is Low level effective and described Enable Pin is equiped with pull-up resistor.
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| CN114924636B (en) * | 2022-06-01 | 2023-03-21 | 北京华电众信技术股份有限公司 | Post-shutdown self-starting circuit for low-side X86 processor |
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| CN101673136B (en) * | 2009-10-27 | 2012-01-11 | 中兴通讯股份有限公司 | Power control unit and on/off method |
| CN102281467B (en) * | 2010-06-12 | 2013-04-24 | 四川九州电子科技股份有限公司 | Standby, timing shutdown and timing boot controlling device of set top box |
| CN102999410A (en) * | 2011-09-08 | 2013-03-27 | 鸿富锦精密工业(武汉)有限公司 | Computer startup and shutdown control system |
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