CN105159436A - Industrial personal computer power on-off control apparatus and control method - Google Patents

Industrial personal computer power on-off control apparatus and control method Download PDF

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Publication number
CN105159436A
CN105159436A CN201510641432.5A CN201510641432A CN105159436A CN 105159436 A CN105159436 A CN 105159436A CN 201510641432 A CN201510641432 A CN 201510641432A CN 105159436 A CN105159436 A CN 105159436A
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China
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circuit
power
personal computer
industrial
industrial personal
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CN201510641432.5A
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杨明
龙耀辉
金灿光
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Ndt Science & Technology Co Ltd
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Ndt Science & Technology Co Ltd
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Priority to CN201510641432.5A priority Critical patent/CN105159436A/en
Publication of CN105159436A publication Critical patent/CN105159436A/en
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Abstract

The invention discloses an industrial personal computer power on-off control apparatus and a control method. The apparatus comprises a detection circuit, a real-time clock circuit, a background server, a main control circuit and a relay circuit, wherein both the output end of the detection circuit and the output end of the real-time clock circuit are connected with the input end of the main control circuit; the input ends of the main control circuit and the detection circuit, the output end of the relay circuit and the background server are all connected with an industrial personal computer; and the output end of the main control circuit is connected with the input end of the relay circuit. The apparatus comprises the background server, so that the manpower management cost is reduced; the apparatus comprises the detection circuit, the main control circuit and the relay circuit, so that reliable and effective industrial personal computer power on-off control is realized, electric energy is saved, the situation of forced interruption of the industrial personal computer in a non system shutdown state is avoided as far as possible, and the damage to a power supply or a system of the industrial personal computer is reduced. The industrial personal computer power on-off control apparatus and the control method can be widely applied to the technical field of electronics.

Description

A kind of industrial personal computer power on-off control device and control method
Technical field
The present invention relates to electronic technology field, especially a kind of industrial personal computer power on-off control device and control method.
Background technology
With in the commercial unit of industrial computer, work in these equipment is free requirement, and at present the break-make of these device power supply (DPS)s mostly by manually operating, this adds the cost of labor management undoubtedly, especially there is idle function like this for industrial computer, be easy to, because of the management of careless omission to its power supply, make its place in the standby state, both waste electric energy like this, there is again the risk that external factors such as meeting with thunderbolt is destroyed.In order to save the cost of manpower management, the power on-off control device for these device power supply (DPS) break-makes of Based Intelligent Control arises at the historic moment.The device of this device power supply (DPS) break-make of usual control, realize the make-break operation of device power supply (DPS) according to the energising timing or power cut off delay time of remembering setting, but it does not consider that the industrial computer of distinct device or different performance closes the time length difference of operating software and shutdown system before power-off: if the power cut off delay overlong time of setting, then it does not have timely deenergization after industrial computer shutdown system, causes the waste of power supply; If the power cut off delay time of setting is too short, then it can disconnect the industrial personal computer power of non-shutdown system by force, and this will cause certain infringement to the power supply of industrial computer or system.
Therefore necessaryly a new power control is provided for industrial personal computer power, industrial personal computer power can be realized reliably on the time period of setting, be energized efficiently and power-off, electric energy and manpower management cost were so both saved, it also avoid the potential safety hazard that industrial personal computer power exists in management, decrease the failure rate of equipment.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the invention is: a kind of efficient, reliable and industrial personal computer power on-off control device that cost is low is provided.
Another object of the present invention is: provide a kind of efficient, reliable and industrial personal computer power on-off control method thereof that cost is low.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of industrial personal computer power on-off control device, comprising:
Testing circuit, for the current signal of Real-time Collection industrial personal computer power, and is converted to TTL signal by the current signal of collection;
Real time clock circuit, for providing real-time elapsed time clock;
Background server, for carrying out unified management to the power supply of industrial computer, to the shutdown of industrial computer forward delay interval or time delay power-on command;
Whether governor circuit, for judging industrial computer shutdown system according to TTL signal, then produce corresponding power-off or energising control signal according to the result judged, delay switching-off or time delay power-on command and real-time elapsed time clock;
Relay circuit, for according to power-off or energising control signal, the power supply to industrial computer controls;
The output terminal of described testing circuit is all connected with the input end of governor circuit with the output terminal of real time clock circuit, the input end of described governor circuit, testing circuit, the output terminal of relay circuit are all connected with industrial computer with background server, and the output terminal of described governor circuit is connected with the input end of relay circuit.
Further, described testing circuit comprises:
Current transformer, for gathering the electric current of industrial personal computer power, and is converted to voltage signal by the electric current of collection;
Comparer, for being converted to TTL signal by the voltage signal after conversion;
The input end of described current transformer is connected with the output terminal of industrial computer, and the output terminal of described current transformer is connected with the input end of comparer, and the output terminal of described comparer is connected with the input end of governor circuit.
Further, described relay circuit comprises relay drive circuit and relay, the input end of described relay drive circuit is connected with the input end of governor circuit, the output terminal of described relay drive circuit is connected with the first input end of relay, second input end of described relay is connected with 220 AC power, and the output terminal of described relay is connected with the input end of industrial computer.
Further, described comparer adopts LM2901D comparer chip.
Further, described relay drive circuit adopts ULQ2003AD driving chip.
Further, described governor circuit adopts STM32F103RCT6 chip.
Further, this device is also provided with the back-up battery circuit for providing back-up source for governor circuit and real time clock circuit.
Further, between described governor circuit and industrial computer, be also connected with telecommunication circuit, described telecommunication circuit adopts FT232RL chip.
The present invention solves another technical scheme that its technical matters adopts:
A kind of industrial personal computer power on-off control method thereof, comprising:
A, background server are shut down and time delay power-on command to governor circuit forward delay interval by industrial computer;
B, governor circuit carry out timing by real time clock circuit to the delay switching-off time, wait for that the delay switching-off time arrives;
Whether C, governor circuit by the electric current of D.C mutual-inductor Real-time Collection industrial personal computer power, and judge industrial computer shutdown system according to the size gathering electric current;
D, governor circuit the delay switching-off time arrive and industrial computer shutdown system time, close the power supply of industrial computer by relay circuit, then by real time clock circuit, timing carried out to the time delay on time, wait for that the time delay on time arrives;
E, governor circuit, when the time delay on time arrives, open the power supply of industrial computer by relay circuit.
Further, described step C, it comprises:
The electric current of C1, Real-time Collection industrial personal computer power, and the electric current of collection is converted to voltage signal;
C2, by conversion after voltage signal be converted to TTL signal;
Whether C3, governor circuit judge industrial computer shutdown system according to the size of TTL signal, if TTL signal is less than the threshold value of setting, then judge industrial computer shutdown system; Otherwise, then the non-shutdown system of industrial computer.
The beneficial effect of device of the present invention is: comprise background server, by the power supply of the Long-distance Control unified management equipment industrial computer of background server, saves the cost of manpower management, and solves the potential safety hazard of industrial personal computer power existence in management; Comprise testing circuit, governor circuit and relay circuit, the electric current of industrial personal computer power is gathered by the testing circuit on hardware, and in conjunction with the firmware control action of governor circuit and relay circuit, achieve and industrial personal computer power power on/off reliably, is efficiently controlled, can saves energy, the situation of industrial computer forced interruption under the state of non-shutdown system can be avoided again to greatest extent, reduce the infringement that power supply or the system of industrial computer are caused.
The beneficial effect of method of the present invention is: whether the size gathering electric current according to the industrial personal computer power size of current of Real-time Collection judges industrial computer shutdown system, and the delay switching-off time arrive and industrial computer shutdown system time close the power supply of industrial computer or open the power supply of industrial computer when the time delay on time arrives, achieve and industrial personal computer power power on/off reliably, is efficiently controlled, can saves energy, the situation of industrial computer forced interruption under the state of non-shutdown system can be avoided again to greatest extent, reduce the infringement that power supply or the system of industrial computer are caused.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structured flowchart of a kind of industrial personal computer power on-off control device of the present invention;
Fig. 2 is the overall flow figure of a kind of industrial personal computer power on-off control method thereof of the present invention;
Fig. 3 is the process flow diagram of step C of the present invention;
Fig. 4 is the chip pin function figure of governor circuit of the present invention;
Fig. 5 is the communication chip pin function figure of telecommunication circuit of the present invention;
Fig. 6 is the driving chip pin function figure of relay drive circuit.
Fig. 7 is the comparer chip pin function figure of comparator circuit.
Embodiment
With reference to Fig. 1, a kind of industrial personal computer power on-off control device, comprising:
Testing circuit, for the current signal of Real-time Collection industrial personal computer power, and is converted to TTL signal by the current signal of collection;
Real time clock circuit, for providing real-time elapsed time clock;
Background server, for carrying out unified management to the power supply of industrial computer, to the shutdown of industrial computer forward delay interval or time delay power-on command;
Whether governor circuit, for judging industrial computer shutdown system according to TTL signal, then produce corresponding power-off or energising control signal according to the result judged, delay switching-off or time delay power-on command and real-time elapsed time clock;
Relay circuit, for according to power-off or energising control signal, the power supply to industrial computer controls;
The output terminal of described testing circuit is all connected with the input end of governor circuit with the output terminal of real time clock circuit, the input end of described governor circuit, testing circuit, the output terminal of relay circuit are all connected with industrial computer with background server, and the output terminal of described governor circuit is connected with the input end of relay circuit.
Wherein, the current signal of industrial personal computer power is simulating signal, so will be converted into digital signal (i.e. Transistor-Transistor Logic level signal), identifies and process to enable governor circuit.
Governor circuit is control core, be responsible for communicating with industrial computer, the process of data, signal input, export control etc.
With reference to Fig. 1, be further used as preferred embodiment, described testing circuit comprises:
Current transformer, for gathering the electric current of industrial personal computer power, and is converted to voltage signal by the electric current of collection;
Comparer, for being converted to TTL signal by the voltage signal after conversion;
The input end of described current transformer is connected with the output terminal of industrial computer, and the output terminal of described current transformer is connected with the input end of comparer, and the output terminal of described comparer is connected with the input end of governor circuit.
With reference to Fig. 1, be further used as preferred embodiment, described relay circuit comprises relay drive circuit and relay, the input end of described relay drive circuit is connected with the input end of governor circuit, the output terminal of described relay drive circuit is connected with the first input end of relay, second input end of described relay is connected with 220 AC power, and the output terminal of described relay is connected with the input end of industrial computer.
Be further used as preferred embodiment, described comparer adopts LM2901D comparer chip.
Be further used as preferred embodiment, described relay drive circuit adopts ULQ2003AD driving chip.
Wherein, ULN2003AD driving chip is the Darlington transistor array driving circuit of one piece of high pressure, big current, includes seven groups of NPN type Darlington transistors.The emitter of each group of Darlington transistor all links together, and open collector exports.
Be further used as preferred embodiment, described governor circuit adopts STM32F103RCT6 chip.
The present invention adopts technical grade CPU processor STM32F103RCT6 as main control chip, carries real-time clock and backing register.
With reference to Fig. 1, be further used as preferred embodiment, this device is also provided with the back-up battery circuit for providing back-up source for governor circuit and real time clock circuit.
With reference to Fig. 1, be further used as preferred embodiment, between described governor circuit and industrial computer, be also connected with telecommunication circuit, described telecommunication circuit adopts FT232RL chip.
Wherein, FT232RL chip can realize USB and turn serial port function, and with reset function.
With reference to Fig. 2, a kind of industrial personal computer power on-off control method thereof, comprising:
A, background server are shut down and time delay power-on command to governor circuit forward delay interval by industrial computer;
B, governor circuit carry out timing by real time clock circuit to the delay switching-off time, wait for that the delay switching-off time arrives;
Whether C, governor circuit by the electric current of D.C mutual-inductor Real-time Collection industrial personal computer power, and judge industrial computer shutdown system according to the size gathering electric current;
D, governor circuit the delay switching-off time arrive and industrial computer shutdown system time, close the power supply of industrial computer by relay circuit, then by real time clock circuit, timing carried out to the time delay on time, wait for that the time delay on time arrives;
E, governor circuit, when the time delay on time arrives, open the power supply of industrial computer by relay circuit.
With reference to Fig. 3, be further used as preferred embodiment, described step C, it comprises:
The electric current of C1, Real-time Collection industrial personal computer power, and the electric current of collection is converted to voltage signal;
C2, by conversion after voltage signal be converted to TTL signal;
Whether C3, governor circuit judge industrial computer shutdown system according to the size of TTL signal, if TTL signal is less than the threshold value of setting, then judge industrial computer shutdown system; Otherwise, then the non-shutdown system of industrial computer.
Below in conjunction with Figure of description and specific embodiment, the present invention is described in further detail.
Embodiment one
As shown in Figure 1, the industrial personal computer power control system of switching on or off electricity device of the present embodiment comprises governor circuit 1, telecommunication circuit 2, back-up battery circuit 3, real time clock circuit 4, relay circuit 5, current transformer 6, comparer 7, industrial computer 8, background server 9, and described relay circuit comprises relay drive circuit 5-1, relay 5-2.Described AC220V provides power supply through relay 5-2 to industrial computer 8, described current transformer 6 connects the power circuit of industrial computer 8, deliver to comparer 7 after the current signal detected is converted to voltage signal and be transformed to TTL signal, send into governor circuit 1 and do corresponding process, finally when needing to control industrial personal computer power for relay circuit 5 provides energising or the basis for estimation of power-off.Described background server 9 is connected by network interface with industrial computer 8, and described telecommunication circuit 2 turns serial communication circuit for USB, and namely industrial computer is connected with telecommunication circuit 2 by USB port, and then is connected with governor circuit 1 with the form of serial communication.The output terminal of described real time clock circuit 4, the output terminal of back-up battery circuit 3 are all connected with governor circuit 1, play real-time timing, power-off maintains timing and preserve the effect of data parameters.
As shown in accompanying drawing 4-Fig. 7, described CPU processor 1 adopts STM32F103RCT6 chip, and described telecommunication circuit 2 adopts FT232RL chip, and described relay drive circuit 5-1 adopts ULQ2003AD chip, and described comparer 7 adopts LM2901D chip.The pin 13 of described LM2901D chip is connected with the pin 24 of STM32F103RCT6 chip, the pin 1,5 of described FT232RL chip is connected with 35 with the pin 43,42 of STM32F103RCT6 chip respectively with 19, and the pin 1,2,3 of described ULQ2003AD chip is connected with 40 with the pin 37,38,39 of STM32F103RCT6 chip respectively with 4.
The control example device of this enforcement controls the energising of industrial personal computer power or the process of power-off comprises the following steps:
(1) shut down to industrial computer 8 forward delay interval by network interface by background server 9, parameter and order are started shooting in time delay, this parameter and order are sent to governor circuit 1 by telecommunication circuit 2 by industrial computer 8 again.
(2) delay switching-off order in governor circuit 1 execution, carries out timing by 4 pairs of delay switching-off times of real time clock circuit, waits for that the delay switching-off time arrives.
(3) current signal of D.C mutual-inductor 6 Real-time Collection industrial personal computer power, and be converted into after the TTL signal that governor circuit 1 can identify and process through comparer and send into governor circuit 1, judge industrial computer whether shutdown system by governor circuit 1 according to the size of current signal.
(4) single-chip microcomputer governor circuit 1 the delay switching-off time arrive and industrial computer be shutdown system (namely detecting that industrial personal computer power sets the larger current of threshold value without exceeding) time, the power supply of industrial computer is closed again by relay circuit 5, simultaneously outside real time clock circuit 4 starts to perform start time delay command, timing is carried out to the time delay on time, waits for that the time delay on time arrives.
(5) when the time delay on time arrives, governor circuit 1 opens the power supply of industrial computer by relay circuit 5.
Compared with prior art, the present invention has the following advantages:
(1) comprise background server, by the power supply of the Long-distance Control unified management equipment industrial computer of background server, save the cost of manpower management, and solve the potential safety hazard of industrial personal computer power existence in management;
(2) testing circuit, governor circuit and relay circuit is comprised, the electric current of industrial personal computer power is gathered by the testing circuit on hardware, and in conjunction with the firmware control action of governor circuit and relay circuit, achieve and industrial personal computer power power on/off reliably, is efficiently controlled, can saves energy, the situation of industrial computer forced interruption under the state of non-shutdown system can be avoided again to greatest extent, reduce the infringement that power supply or the system of industrial computer are caused.
More than that better enforcement of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent distortion or replacement are all included in the application's claim limited range.

Claims (10)

1. an industrial personal computer power on-off control device, is characterized in that: comprising:
Testing circuit, for the current signal of Real-time Collection industrial personal computer power, and is converted to TTL signal by the current signal of collection;
Real time clock circuit, for providing real-time elapsed time clock;
Background server, for carrying out unified management to the power supply of industrial computer, to the shutdown of industrial computer forward delay interval or time delay power-on command;
Whether governor circuit, for judging industrial computer shutdown system according to TTL signal, then produce corresponding power-off or energising control signal according to the result judged, delay switching-off or time delay power-on command and real-time elapsed time clock;
Relay circuit, for according to power-off or energising control signal, the power supply to industrial computer controls;
The output terminal of described testing circuit is all connected with the input end of governor circuit with the output terminal of real time clock circuit, the input end of described governor circuit, testing circuit, the output terminal of relay circuit are all connected with industrial computer with background server, and the output terminal of described governor circuit is connected with the input end of relay circuit.
2. a kind of industrial personal computer power on-off control device according to claim 1, is characterized in that: described testing circuit comprises:
Current transformer, for gathering the electric current of industrial personal computer power, and is converted to voltage signal by the electric current of collection;
Comparer, for being converted to TTL signal by the voltage signal after conversion;
The input end of described current transformer is connected with the output terminal of industrial computer, and the output terminal of described current transformer is connected with the input end of comparer, and the output terminal of described comparer is connected with the input end of governor circuit.
3. a kind of industrial personal computer power on-off control device according to claim 2, it is characterized in that: described relay circuit comprises relay drive circuit and relay, the input end of described relay drive circuit is connected with the input end of governor circuit, the output terminal of described relay drive circuit is connected with the first input end of relay, second input end of described relay is connected with 220 AC power, and the output terminal of described relay is connected with the input end of industrial computer.
4. a kind of industrial personal computer power on-off control device according to claim 3, is characterized in that: described comparer adopts LM2901D comparer chip.
5. a kind of industrial personal computer power on-off control device according to claim 3, is characterized in that: described relay drive circuit adopts ULQ2003AD driving chip.
6. a kind of industrial personal computer power on-off control device according to any one of claim 1-5, is characterized in that: described governor circuit adopts STM32F103RCT6 chip.
7. a kind of industrial personal computer power on-off control device according to any one of claim 1-5, is characterized in that: this device is also provided with the back-up battery circuit for providing back-up source for governor circuit and real time clock circuit.
8. a kind of industrial personal computer power on-off control device according to any one of claim 1-5, is characterized in that: between described governor circuit and industrial computer, be also connected with telecommunication circuit, and described telecommunication circuit adopts FT232RL chip.
9. an industrial personal computer power on-off control method thereof, is characterized in that: comprising:
A, background server are shut down and time delay power-on command to governor circuit forward delay interval by industrial computer;
B, governor circuit carry out timing by real time clock circuit to the delay switching-off time, wait for that the delay switching-off time arrives;
Whether C, governor circuit by the electric current of D.C mutual-inductor Real-time Collection industrial personal computer power, and judge industrial computer shutdown system according to the size gathering electric current;
D, governor circuit the delay switching-off time arrive and industrial computer shutdown system time, close the power supply of industrial computer by relay circuit, then by real time clock circuit, timing carried out to the time delay on time, wait for that the time delay on time arrives;
E, governor circuit, when the time delay on time arrives, open the power supply of industrial computer by relay circuit.
10. a kind of industrial personal computer power on-off control method thereof according to claim 9, it is characterized in that: described step C, it comprises:
The electric current of C1, Real-time Collection industrial personal computer power, and the electric current of collection is converted to voltage signal;
C2, by conversion after voltage signal be converted to TTL signal;
Whether C3, governor circuit judge industrial computer shutdown system according to the size of TTL signal, if TTL signal is less than the threshold value of setting, then judge industrial computer shutdown system; Otherwise, then the non-shutdown system of industrial computer.
CN201510641432.5A 2015-09-30 2015-09-30 Industrial personal computer power on-off control apparatus and control method Pending CN105159436A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108614490A (en) * 2018-06-11 2018-10-02 浙江国自机器人技术有限公司 A kind of device that restarting industrial personal computer, system and method
CN109002029A (en) * 2018-10-25 2018-12-14 安徽澳视科技有限公司 A kind of Conference Hall intelligent control power supply case
CN110764973A (en) * 2019-11-06 2020-02-07 深圳极致快技术有限公司 Complete machine equipment power-off system and method based on identification of shutdown state of industrial control host
CN112485722A (en) * 2020-11-24 2021-03-12 济南吉美乐电源技术有限公司 Communication cable on-off detection device based on STM32 singlechip

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101266468A (en) * 2008-04-17 2008-09-17 中国铁路通信信号上海工程有限公司 On-off system automatic control system and control method
CN102664460A (en) * 2012-05-02 2012-09-12 郭胜利 Load remote automatic control power supply device
US20120239955A1 (en) * 2009-09-18 2012-09-20 Sony Computer Entertainment Inc. Electronic device
CN203859335U (en) * 2014-04-22 2014-10-01 Tcl集团股份有限公司 Alternating-current power-saving switch control device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101266468A (en) * 2008-04-17 2008-09-17 中国铁路通信信号上海工程有限公司 On-off system automatic control system and control method
US20120239955A1 (en) * 2009-09-18 2012-09-20 Sony Computer Entertainment Inc. Electronic device
CN102664460A (en) * 2012-05-02 2012-09-12 郭胜利 Load remote automatic control power supply device
CN203859335U (en) * 2014-04-22 2014-10-01 Tcl集团股份有限公司 Alternating-current power-saving switch control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108614490A (en) * 2018-06-11 2018-10-02 浙江国自机器人技术有限公司 A kind of device that restarting industrial personal computer, system and method
CN108614490B (en) * 2018-06-11 2020-06-16 浙江国自机器人技术有限公司 Device, system and method for restarting industrial personal computer
CN109002029A (en) * 2018-10-25 2018-12-14 安徽澳视科技有限公司 A kind of Conference Hall intelligent control power supply case
CN110764973A (en) * 2019-11-06 2020-02-07 深圳极致快技术有限公司 Complete machine equipment power-off system and method based on identification of shutdown state of industrial control host
CN112485722A (en) * 2020-11-24 2021-03-12 济南吉美乐电源技术有限公司 Communication cable on-off detection device based on STM32 singlechip

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Application publication date: 20151216