CN103499767A - Electronic instrument input fuse monitoring device - Google Patents
Electronic instrument input fuse monitoring device Download PDFInfo
- Publication number
- CN103499767A CN103499767A CN201310492578.9A CN201310492578A CN103499767A CN 103499767 A CN103499767 A CN 103499767A CN 201310492578 A CN201310492578 A CN 201310492578A CN 103499767 A CN103499767 A CN 103499767A
- Authority
- CN
- China
- Prior art keywords
- fuse
- resistance
- voltage
- electronic instrument
- monitoring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
At present, fuses are widely used as input protectors for instruments, however, burnt fuses cannot be easily discovered sometimes until instruments are used, and as a result, inconvenience is brought to use. Because the input end of an instrument can be connected to high voltage reaching 1000V by mistake and voltage can be zero sometimes, conventional fuse monitoring devices cannot be adapted to such a wide working range. The purpose of the invention is to provide an electronic instrument input fuse monitoring device, which can prompt users when fuses are burnt out. The invention achieves the purpose by means of the following technical scheme: the electronic instrument input fuse monitoring device comprises an excitation power supply, a first resistor, a second resistor and a voltage test and judgment unit, high voltage-withstanding resistors are chosen as the first resistor and the second resistor of the electronic instrument input fuse monitoring device, and thereby the electronic instrument input fuse monitoring device working under high voltage cannot be burnt out when a fuse is burnt out. The electronic instrument input fuse monitoring device has the advantages that: the electronic instrument input fuse monitoring device can effectively monitor the state of the fuse, and the application range is wide.
Description
Technical field
The present invention relates to electronic instrument, relate in particular a kind of electronic instrument input fuse monitoring arrangement.
Background technology
Be widely used now the input protector of fuse as instrument and meter, but after fuse burns sometimes, subtle, until just find while using, to use, make troubles.Because the instrument input end may misconnection reach the high pressure of 1000 volts, sometimes may all not have by any voltage again, existing fuse monitoring arrangement, can't adapt to so large working range.
Summary of the invention
The purpose of this invention is to provide a kind of electronic instrument input fuse monitoring arrangement, after fuse burns, the user is given to prompting, and no matter the fuse two ends occur that high pressure or no-voltage can play the supervision effect.
This patent is achieved through the following technical solutions above-mentioned purpose, a kind of fuse monitoring arrangement, for monitoring the fuse (2) of protected circuit (1), it is characterized in that, comprise excitation power supply (5), the first resistance (3), the second resistance (4), voltage tester judgment means (6), the first resistance (3) one ends are connected with excitation power supply (5) one ends, the first resistance (3) other end is connected with fuse (2) one ends, described the second resistance (4) one ends are connected with fuse (2) one ends, the second resistance (4) other end is connected with voltage tester judgment means (6) input end (9), fuse (2) other end is connected with voltage tester judgment means (6) input end (10), fuse (2) other end is connected with excitation power supply (6) other end, test judgment means (6) output terminal (7) output monitors result, when fuse (2) while not burning, the resistance of fuse (2) approximates zero, therefore the voltage that voltage tester judgment means (6) detects is zero, after fuse (2) burns, if burn loss of voltage, voltage tester judgment means (6), by the first resistance (3), the second resistance (4), receive excitation power supply (5), existence due to excitation power supply (5), the voltage that voltage tester judgment means (6) detects is non-vanishing, the signal burnt at voltage tester judgment means (6) output terminal (7) export insurance silk (2) through judgement, after fuse (2) burns, if burning voltage does not disappear, voltage tester judgment means (6), by the second resistance (4) and voltage tester judgment means (6) input end (10), the voltage at fuse (2) two ends detected, if this voltage is non-vanishing, the signal burnt at voltage tester judgment means (6) output terminal (7) export insurance silk (2).Receive the signal that voltage tester judgment means (6) output terminal (7) export insurance silk (2) burns, warning device (8) warning of sounding, and give prompting on display screen.Further, in the specification that shows the screen display fuse, model, so that change.When first resistance (3) of this patent high pressure occurs for burn rear two ends at fuse (2); protection driving source (5); the second resistance (4); for at fuse (2), burning rear two ends while high pressure occurring, protection voltage tester judgment means (6), therefore when selecting resistance, its resistance and voltage will meet the protection requirement; select high withstand voltage resistance; high resistance measurement, when high pressure appears in fuse (2) two ends that can make to be monitored, whole fuse monitoring arrangement still can work.
The effect of this patent is, effectively monitors electronic instrument input protection fuse state, whether burn, and no matter high pressure appears in the fuse two ends, or can normal monitoring during no-voltage.
The accompanying drawing explanation
The circuit theory diagrams of accompanying drawing 1 this patent embodiment.
The two multimeter fuse monitoring arrangement circuit theory diagrams of accompanying drawing 2 embodiment.
In figure, 1. protected circuit, 2. fuse, 3. the first resistance; 4. the second resistance, 5. excitation power supply, 6. voltage tester judgment means; 7. voltage tester judgment means output terminal, 8. warning device, 9. voltage tester judgment means input end; 10. voltage tester judgment means input end, 11. multimeter testing current modules, 12. comparers; 13. the 3rd resistance, 14. positive supplies, 15. negative supplies; 16. current sense resistor, 17. comparator reference voltages, 18. comparator output terminals.
Below in conjunction with accompanying drawing, this patent is described further.
Figure 1 shows that the circuit theory diagrams of this patent embodiment, a kind of fuse monitoring arrangement, for monitoring the fuse (2) of protected circuit (1), it is characterized in that, comprise excitation power supply (5), the first resistance (3), the second resistance (4), voltage tester judgment means (6), the first resistance (3) one ends are connected with excitation power supply (5) one ends, the first resistance (3) other end is connected with fuse (2) one ends, described the second resistance (4) one ends are connected with fuse (2) one ends, the second resistance (4) other end is connected with voltage tester judgment means (6) input end (9), fuse (2) other end is connected with voltage tester judgment means (6) input end (10), fuse (2) other end is connected with excitation power supply (6) other end, test judgment means (6) output terminal (7) output monitors result, when fuse (2) while not burning, the resistance of fuse (2) approximates zero, therefore the voltage that voltage tester judgment means (6) detects is zero, after fuse (2) burns, if burn loss of voltage, voltage tester judgment means (6), by the first resistance (3), the second resistance (4), receive excitation power supply (5), existence due to excitation power supply (5), the voltage that voltage tester judgment means (6) detects is non-vanishing, the signal burnt at voltage tester judgment means (6) output terminal (7) export insurance silk (2) through judgement, after fuse (2) burns, if burning voltage does not disappear, voltage tester judgment means (6), by the second resistance (4) and voltage tester judgment means (6) input end (10), the voltage at fuse (2) two ends detected, if this voltage is non-vanishing, the signal burnt at voltage tester judgment means (6) output terminal (7) export insurance silk (2) through judgement.Receive the signal that voltage tester judgment means (6) output terminal (7) export insurance silk (2) burns, warning device (8) warning of sounding, and give prompting on display screen.Especially, in the specification that shows the screen display fuse, model, so that change.When monitoring a plurality of fuse, should provide position or the sequence number of fuse, investigate and prosecute position and the specification of fuse by sequence number, so that the user processes.。When first resistance (3) of this patent high pressure occurs for burn rear two ends at fuse (2); protection driving source (5); the second resistance (4); for at fuse (2), burning rear two ends while high pressure occurring, protection voltage tester judgment means (6), therefore when selecting resistance, its resistance and voltage will meet the protection requirement; select high withstand voltage resistance; high resistance measurement, when high pressure appears in fuse (2) two ends that can make to be monitored, whole fuse monitoring arrangement still can work.General instrument should be selected withstand voltage 1000 volts of above resistance, and resistance is selected the above value of 10 megaohms, so that the fuse be monitored (2) two ends are while high pressure occurring, whole fuse monitoring arrangement still can work.
The protection fuse of multimeter current gear, usually, after burning, the user does not perceive, and to the user, brings inconvenience.The two multimeter fuse monitoring arrangement circuit theory diagrams that accompanying drawing 2 is embodiment.Protected the current detection circuit module (11) of multimeter in figure by fuse (2), and current sense resistor (16), current sense resistor (16) one ends are connected with fuse (2) other end, current sense resistor (16) other end is connected with ground wire, current sense resistor (16) resistance is very little, be generally 0.01 Europe to 1 Europe, the first resistance (3) one ends are connected with fuse (2) one ends, the first resistance (3) other end is connected with the positive supply (14) as excitation power supply, the 3rd resistance (13) one ends are connected with fuse (2) other end, the 3rd resistance (13) other end is connected with negative supply (15), positive supply (14) plays the effect of excitation power supply, the effect of negative supply (15) and the 3rd resistance (13) is to guarantee when fuse (2) works, there is no the current sense resistor (14) in the current detection circuit module (11) of current direction multimeter, for reaching this order ground, should make the electric current that flows through the first resistance (3) equate with the electric current that flows through the 3rd resistance (13), adopt comparer (12) as voltage tester judgment means (6), comparer (12) negative input end is connected with comparator reference voltage (17), the magnitude of voltage that the magnitude of voltage of comparator reference voltage (17) is positive supply (14) is except 2, the positive input terminal of comparer (12) is connected with the other end of the second resistance (4), one end of the second resistance (4) is connected with an end of fuse (2), when fuse (2) works, because the resistance of the current sense resistor (16) in the current detection circuit module (11) of multimeter is very little, during fuse (2) normal operation, resistance is also very little, so the positive input terminal of comparer (12) is zero, output terminal (18) output low level of comparer (12), when fuse (2) burns, the positive input terminal of comparer (12) is elevated to the positive voltage value, this voltage is higher than the comparator reference magnitude of voltage of comparer (12) negative input end, comparer (12) output terminal (18) output high level, when multimeter CPU detects high level, demonstrating fuse (2) on display screen burns.Because multimeter has two fuses usually, one be 20A another be 500mA, it is 20A or 500ma that display screen should demonstrate the fuse specification of burning, so that the user can process in time.Because the highest permission test voltage of multimeter is 1000V, in order to protect the fuse monitoring arrangement, the first resistance (3) and the second resistance (4) adopt withstand voltage to surpass the high-tension resistive of 1000V.For simplified design; the present embodiment has only been used a comparer; supervision in the time of can completing fuse two ends no-voltage; complete the supervision of two ends while having alternating voltage, complete the supervision that has a direction direct current, if use dual comparator; can form more complete protection; can, to the supervision of the direct current that has both direction at fuse two ends, because this is the simple designs that those of ordinary skills can complete, at this, be not repeated.
Claims (3)
1. an electronic instrument is inputted the fuse monitoring arrangement, for monitoring the fuse (2) of protected circuit (1), it is characterized in that, comprise excitation power supply (5), the first resistance (3), the second resistance (4), voltage tester judgment means (6), the first resistance (3) one ends are connected with excitation power supply (5) one ends, the first resistance (3) other end is connected with fuse (2) one ends, described the second resistance (4) one ends are connected with fuse (2) one ends, the second resistance (4) other end is connected with voltage tester judgment means (6) input end (9), fuse (2) other end is connected with voltage tester judgment means (6) input end (10), fuse (2) other end is connected with excitation power supply (6) other end, test judgment means (6) output terminal (7) output monitors result.
2. according to claim 1, it is characterized in that starting warning according to the Output rusults of voltage tester judgment means (6), display device, show the fuse burnt, and comprises the specification of fuse, and the position of burning fuse.
3. according to claim 1, it is characterized in that described the first resistance (3), the second resistance (4) is selected high withstand voltage resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310492578.9A CN103499767A (en) | 2013-10-21 | 2013-10-21 | Electronic instrument input fuse monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310492578.9A CN103499767A (en) | 2013-10-21 | 2013-10-21 | Electronic instrument input fuse monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103499767A true CN103499767A (en) | 2014-01-08 |
Family
ID=49864992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310492578.9A Pending CN103499767A (en) | 2013-10-21 | 2013-10-21 | Electronic instrument input fuse monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103499767A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113721141A (en) * | 2021-08-18 | 2021-11-30 | 旭程电子(深圳)有限公司 | Voltage withstand detection device for fuse |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051691A (en) * | 1990-09-13 | 1991-09-24 | Samsung Semiconductor, Inc. | Zero power dissipation laser fuse signature circuit for redundancy in vlsi design |
| US20010033176A1 (en) * | 1998-11-11 | 2001-10-25 | Jurgen Klaar | Method and apparatus for identification of the disconnection of a protection device |
| CN201897627U (en) * | 2010-11-16 | 2011-07-13 | 株洲科瑞变流电气有限公司 | Fast-acting fuse detector |
| CN202281812U (en) * | 2011-09-29 | 2012-06-20 | 比亚迪股份有限公司 | Fault detection system for power distribution box and vehicle with fault detection system |
| CN202563046U (en) * | 2012-05-29 | 2012-11-28 | 漳州市东方智能仪表有限公司 | Fuse burnout alarm device |
| CN202975237U (en) * | 2012-05-16 | 2013-06-05 | 洛阳隆盛科技有限责任公司 | Fuse burn-out alarm circuit |
-
2013
- 2013-10-21 CN CN201310492578.9A patent/CN103499767A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051691A (en) * | 1990-09-13 | 1991-09-24 | Samsung Semiconductor, Inc. | Zero power dissipation laser fuse signature circuit for redundancy in vlsi design |
| US20010033176A1 (en) * | 1998-11-11 | 2001-10-25 | Jurgen Klaar | Method and apparatus for identification of the disconnection of a protection device |
| CN201897627U (en) * | 2010-11-16 | 2011-07-13 | 株洲科瑞变流电气有限公司 | Fast-acting fuse detector |
| CN202281812U (en) * | 2011-09-29 | 2012-06-20 | 比亚迪股份有限公司 | Fault detection system for power distribution box and vehicle with fault detection system |
| CN202975237U (en) * | 2012-05-16 | 2013-06-05 | 洛阳隆盛科技有限责任公司 | Fuse burn-out alarm circuit |
| CN202563046U (en) * | 2012-05-29 | 2012-11-28 | 漳州市东方智能仪表有限公司 | Fuse burnout alarm device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113721141A (en) * | 2021-08-18 | 2021-11-30 | 旭程电子(深圳)有限公司 | Voltage withstand detection device for fuse |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW297174B (en) | ||
| US20140092512A1 (en) | Battery Tester | |
| CN102565696B (en) | Quick measuring device of protective pressing plate and measuring method thereof | |
| US20110241891A1 (en) | Ground fault indicator | |
| CN201075500Y (en) | Multi-functional power supply plug-in line board | |
| JP5272123B2 (en) | SPD with deterioration warning function | |
| JP5403776B1 (en) | Detection device for connection failure etc. of indoor wiring, and determination method for connection failure etc. using the same | |
| CN202563046U (en) | Fuse burnout alarm device | |
| CN206788316U (en) | Circuit board testing device | |
| CN103499767A (en) | Electronic instrument input fuse monitoring device | |
| CN104330744A (en) | Power supply detector for detecting power supply plug-in of microcomputer protective device | |
| CN105445596A (en) | Battery detection circuit | |
| JP2015224907A (en) | Current load detection device and current load detection method | |
| US6483686B1 (en) | Circuit for indicating abnormality of three-mode surge absorber of public electric power and a multiple-end fuse | |
| KR102634953B1 (en) | Portable test device for Surge protective device | |
| CN204882693U (en) | Trip protections equipment and electroscope thereof | |
| CN206237118U (en) | With accurate overcurrent-overvoltage and under-voltage protection circuit | |
| KR101429078B1 (en) | Monitoring apparatus of surge protection device | |
| CN201078821Y (en) | Power outlet | |
| CN201518411U (en) | Novel overvoltage protector | |
| KR101276460B1 (en) | The current measuring protection device of a digital multimeter | |
| KR100863668B1 (en) | Surge protector | |
| CN108279342B (en) | Different voltage performance test system of component | |
| KR200489928Y1 (en) | Insulation resistance measuring apparatus | |
| CN203278221U (en) | Power supply lightning arrester with neutral-ground voltage detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140108 |