CN2255063Y - Monitoring and alarming device for dc power supply for processing computer - Google Patents

Monitoring and alarming device for dc power supply for processing computer Download PDF

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Publication number
CN2255063Y
CN2255063Y CN 96204804 CN96204804U CN2255063Y CN 2255063 Y CN2255063 Y CN 2255063Y CN 96204804 CN96204804 CN 96204804 CN 96204804 U CN96204804 U CN 96204804U CN 2255063 Y CN2255063 Y CN 2255063Y
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China
Prior art keywords
circuit
voltage
power supply
warning circuit
output
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Expired - Fee Related
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CN 96204804
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Chinese (zh)
Inventor
朱振荣
孙志鹤
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to CN 96204804 priority Critical patent/CN2255063Y/en
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Publication of CN2255063Y publication Critical patent/CN2255063Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a monitoring alarm device for a DC power supply of a process computer. The utility model belongs to the technical field that whether the voltage is in an allowable range or not is indicated. The utility model comprises a voltage sampling comparison circuit, a luminescence alarm circuit and a horn alarm circuit; particularly, the utility model also comprises a memory flip-latch; thus, the recordation and the alarm of the under voltage of the comparing time can be realized, and workers can deal with the fault in time; thereby, the loss is decreased. The utility model has the advantages of small volume and good effect. The utility model can be used for the monitoring alarm of the DC power supply of the process computer, and the utility model can also be used for the monitoring alarm of the DC power supply of an instrument, an electric apparatus, etc.

Description

Process computer direct supply monitoring alarm
The utility model relates to a kind of process computer direct supply monitoring alarm, and it belongs to instructed voltage and whether is in field within the predetermined numerical range.
Chinese patent CN87207136 discloses a kind of change in voltage prior-warning device, form by five transistors of voltage comparator serial connection, has sound and light of alarm, but this prior-warning device structure is complicated, volume is big, particularly transient voltage can not be write down and report to the police, and this point is extremely important to computing machine, under-voltage or dead electricity takes place as power supply, might cause the computing machine obliterated data, influence is produced; And the process computer power supply is many, as adopts this prior-warning device, then need be with a plurality of, thus both volume was big, function singleness again, and effect is bad.
The purpose of this utility model be to overcome above-mentioned shortcoming of the prior art and provide a kind of simple in structure, volume is little, can be to the direct supply monitoring alarm of transient voltage record and sound and light alarm.
The purpose of this utility model can reach by following measure: the utility model comprises voltage sample comparator circuit, luminous warning circuit and loudspeaker warning circuit, also comprises a memory latch.The output of voltage sample comparator circuit is divided into overvoltage output and under-voltage output, and wherein, overvoltage is exported and respectively is divided into two-way, and one the tunnel links to each other with luminous warning circuit, and another road links to each other with the loudspeaker warning circuit through gate-array circuit; Under-voltage output respectively is divided into three the tunnel, one the tunnel links to each other with luminous warning circuit, one the tunnel links to each other with the loudspeaker warning circuit through gate-array circuit, also have one the tunnel to link to each other with memory latch, the output of memory latch divides two-way, one the tunnel removes luminous warning circuit, and another road is connected to the loudspeaker warning circuit through gate-array circuit, and memory latch is connected to crystal oscillator.
The rating unit of voltage sample comparator circuit adopts the inner integrated transporting discharging chip that has the high precision reference power supply, and tested voltage is delivered to the input end of amplifier after the electric resistance partial pressure sampling.
The loudspeaker warning circuit is to form like this: the output of gate-array circuit links to each other with an end of inductance through a Sheffer stroke gate, and the other end serial connection current-limiting resistance and the power supply of inductance join with power supply behind loudspeaker and the capacitance series.
Memory latch adopts D to trigger latch.
The utility model is because of adopting integrated chip, thereby volume is little, dependable performance, warning are accurate; Because transient voltage is write down warning, make the staff in time to handle to latent fault, reduce production loss; Continue under-voltage or transient voltage because of distinguishing, make the staff can mark scope, directly find failure cause, shorten the repair time, reduce influence producing etc.The utility model is specially adapted to process computer, also can be used for the monitoring to the direct supply of instrument, electrical equipment etc., and the situation of monolithic entity to be used for a power supply is monitored made on also desirable one road, and usable range is wide, effective.
Accompanying drawing is a circuit diagram of the present utility model.
Below in conjunction with accompanying drawing embodiment of the present utility model is further described:
Four direct supply V of the POP-11/44 process computer of producing with U.S. DEC 1(+5V ± 0.25), (+12V ± 2.4), V 3(+15V ± 3), V 4(12V ± 2.4) are example.
As shown in the figure, the utility model mainly is made up of voltage sample comparator circuit 40, gate-array circuit 44, memory latch 43 and crystal oscillator 42.
Sampling comparator circuit 40 is mainly by sampling resistor R 1～R 16The integrated transporting discharging (MAX8214) 41 that has the high precision reference power supply with inside is formed.Computer power supply V 1, V 2, V 3, V 4After the sampling of sampling resistor dividing potential drop, deliver to the input end 2,3,5,7 of MAX8214 respectively, compare with the MAX8214 internal electric source, during line under-voltage, MAX8214 is a high level to under- voltage output terminal 13 or 14 that should power supply, and this output is divided into three the tunnel: the one tunnel and is connected to luminous warning circuit 47; One the tunnel is connected to loudspeaker warning circuit 45 through gate-array circuit (GAL16V8) 44; Also have one the tunnel to be divided into two-way again behind memory latch 43, the one tunnel is connected to luminous warning circuit 48, and another road is connected to loudspeaker warning circuit 45 through gate-array circuit (GAL16V8) 44.During the power supply overvoltage, be high level to the overvoltage output terminal of MAX8214 that should power supply, this output is divided into two-way, and one the tunnel is connected to luminous warning circuit 47, and another road is connected to loudspeaker warning circuit 45 through gate-array circuit 44.1,4,6 of MAX8214 terminates at together, and 8,9,15 terminate at back ground connection together.Because of V 4Be negative supply, in order to compare with the reference voltage 1.25V of MAX8214, other is connected to a little circuit, power supply V D1Through R 17Back bifurcation, one meets a high-precision voltage reference diode BG 1(LM385), another and R 14, R 16Link to each other.
Luminous warning circuit 47,48 is by integrated hex inverter (74LS06) 46, light emitting diode L 1～L 12, resistance R 18～R 29, power supply V D2, V D4Form.When line under-voltage or overvoltage, the corresponding input end of corresponding phase inverter is a high level, thereby the correspondence of phase inverter is output as low level, and power supply reports to the police lumination of light emitting diode through resistance.17～22 ends of phase inverter 46 are input end, and 23～28 ends are output terminal.
Loudspeaker warning circuit 45 is by power supply V D3, V AC, resistance R 30, inductance L, capacitor C, Sheffer stroke gate G 1With loudspeaker BG 2Form.When line under-voltage or overvoltage, gate-array circuit 44 is output as high level, V D3Through R 30Make the L energising, then V ACMake loudspeaker BG through capacitor C 2Sounding alarm.
Memory latch 43 adopts D to trigger latch (LS174), and its pulse ends 33 is connected to a crystal oscillator (1.8432/MH 2) 42,34 ends are artificial reset terminal RESET, 29～32 ends are input end, 35～38 ends are output terminal.The every approximately 0.005MS of memory latch reads a secondary data to the under- voltage output terminal 13,14 of MAX8214, and after record latched, luminous warning circuit 48 and loudspeaker warning circuit 45 were delivered in output.When the power supply transient voltage, because the time is short, promptly under-voltage output terminal output high level lasting time is short, and luminous warning circuit 47 and the alert circuit 45 of loudspeaker limit have little time to make a response, even respond, also is a flash and dying, and the staff can't find.And after memory latch 43 has been arranged, then can this high level record be latched moment, output causes that sound, light reports to the police then.Memory latch also writes down, reports to the police lasting under-voltage, but the staff can be by seeing luminous warning circuit 47 and 48 corresponding same power supplys the diode of two branch roads whether simultaneously brightly judge that continuing under-voltage still is transient voltage, simultaneously bright then under-voltage for continuing, otherwise be transient voltage, thereby directly find out failure cause, reduce influence producing.
When line under-voltage or overvoltage, luminous and audible alarm is arranged simultaneously.Such as working as V 1Under-voltage when being lower than 4.75V, through R 1, R 2Deliver to the input end 2 of MAX8214 after the dividing potential drop sampling, under-voltage output terminal 14 output high level are divided into three the tunnel, the one tunnel and link to each other with the input end 18 of phase inverter 46, and after anti-phase, output terminal 27 is low level, power supply V D2Through R 19Make L 2Bright, expression power work this moment is in under-voltage condition; One the tunnel through gate-array circuit 44, Sheffer stroke gate G 1After be low level, thereby sound horn is reported to the police; Also have one tunnel input end 29 that flows to memory latch, record latchs back output terminal 38 outputs one high level, is divided into two-way, and one the tunnel reports to the police sound horn, and another road is low level after phase inverter is anti-phase, power supply V D4Through R 26Make L 9Bright.As L 2And L 9All bright, show that then power work is in lasting under-voltage condition; As has only L 9Bright, show that then power supply once had moment under-voltage, should in time overhaul.After the staff resetted to the reset terminal RESET of memory latch 43, sound, light were reported to the police and are promptly disappeared.
Work as V 1When overvoltage surpasses 5.25V, through R 3, R 4Deliver to the input end 5 of MAX8214 after the dividing potential drop sampling, overvoltage output terminal 12 output high level are divided into two-way, and one the tunnel makes L 1Bright, the one tunnel reports to the police sound horn.
When power work is in normal range, the overvoltage output terminal 11,12 of MAX8214, under- voltage output terminal 13,14 equal no-outputs are also with regard to noiseless, light indication.

Claims (4)

1. process computer direct supply monitoring alarm, it comprises the voltage sample comparator circuit, luminous warning circuit and loudspeaker warning circuit, it is characterized in that: it also comprises memory latch (43), the output (11) (12) (13) (14) of voltage sample comparator circuit (40) is divided into overvoltage output (11) (12) and under-voltage output (13) (14), wherein, overvoltage output (11) (12) respectively are divided into two-way, one the tunnel links to each other with luminous warning circuit (47), another road links to each other with loudspeaker warning circuit (45) behind gate-array circuit (44), under-voltage output (13) (14) respectively is divided into three the tunnel, one the tunnel links to each other with luminous warning circuit (47), one the tunnel links to each other with loudspeaker warning circuit (45) behind gate-array circuit (44), also have one the tunnel to link to each other with memory latch (43), the output of memory latch divides two-way, one the tunnel removes luminous warning circuit (48), and another road is connected to loudspeaker warning circuit (45) through gate-array circuit (44), and memory latch (43) is connected to crystal oscillator (42).
2. alarm according to claim 1, it is characterized in that: the rating unit of voltage sample comparator circuit (40) adopts the inner integrated transporting discharging chip (41) that has the high precision reference power supply, and tested voltage is delivered to the input end of amplifier (41) after the electric resistance partial pressure sampling.
3. alarm according to claim 1 is characterized in that: loudspeaker warning circuit (45) is to form like this, and the output of gate-array circuit (44) is through a Sheffer stroke gate (G 1) link to each other the other end serial connection current-limiting resistance (R of inductance with an end of inductance (L) 30) and power supply (V D3), loudspeaker (BG 2) be connected in series afterwards and power supply (V with electric capacity (C) AC) join.
4. alarm according to claim 1 is characterized in that: memory latch (43) adopts D to trigger latch.
CN 96204804 1996-03-22 1996-03-22 Monitoring and alarming device for dc power supply for processing computer Expired - Fee Related CN2255063Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 96204804 CN2255063Y (en) 1996-03-22 1996-03-22 Monitoring and alarming device for dc power supply for processing computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 96204804 CN2255063Y (en) 1996-03-22 1996-03-22 Monitoring and alarming device for dc power supply for processing computer

Publications (1)

Publication Number Publication Date
CN2255063Y true CN2255063Y (en) 1997-05-28

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Application Number Title Priority Date Filing Date
CN 96204804 Expired - Fee Related CN2255063Y (en) 1996-03-22 1996-03-22 Monitoring and alarming device for dc power supply for processing computer

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CN (1) CN2255063Y (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1293441C (en) * 2002-06-10 2007-01-03 联想(北京)有限公司 System and method for real time collecting and processing current and voltage of power supply of clauster
CN100356289C (en) * 2004-11-25 2007-12-19 三星电子株式会社 Computer and control method thereof
US7459941B2 (en) 2005-12-30 2008-12-02 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Voltage detecting device
US7839277B2 (en) 2007-07-27 2010-11-23 Yamatake Corporation Monitoring system and temperature controller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1293441C (en) * 2002-06-10 2007-01-03 联想(北京)有限公司 System and method for real time collecting and processing current and voltage of power supply of clauster
CN100356289C (en) * 2004-11-25 2007-12-19 三星电子株式会社 Computer and control method thereof
US7459941B2 (en) 2005-12-30 2008-12-02 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Voltage detecting device
CN1991396B (en) * 2005-12-30 2010-05-05 鸿富锦精密工业（深圳）有限公司 Voltage detection means
US7839277B2 (en) 2007-07-27 2010-11-23 Yamatake Corporation Monitoring system and temperature controller

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C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee