CN206270413U - A kind of manual megohmmeter for being capable of automatic discharging - Google Patents
A kind of manual megohmmeter for being capable of automatic discharging Download PDFInfo
- Publication number
- CN206270413U CN206270413U CN201621412085.5U CN201621412085U CN206270413U CN 206270413 U CN206270413 U CN 206270413U CN 201621412085 U CN201621412085 U CN 201621412085U CN 206270413 U CN206270413 U CN 206270413U
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- module
- automatic discharging
- megameter
- voltage
- discharge
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- 238000007599 discharging Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 238000007600 charging Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of manual megohmmeter for being capable of automatic discharging, a kind of manual megohmmeter for being capable of automatic discharging, including the hand rotate gear for being driven, and the internal generator structure that rotating mechanism of shaking the hand is connected, internal generator structure is connected with DC voltage-stabilizing module, DC voltage-stabilizing module connects the charge and discharge control end of single-chip microcomputer to automatic discharging module for power supply, automatic discharging module.Automatic discharging module is provided with relay, and relay coil is serially connected between the discharge control terminal of single-chip microcomputer and ground, and relay normally open switch is serially connected between the L ' ends inside megameter and megameter outside L ends.The utility model has automatic discharging and sends the function of electric discharge prompt tone, effectively prevent operating personnel from forgetting to discharge or discharge not exclusively to cause to burn out gauge outfit, discharge process can also be monitored according to the length of electric discharge prompt tone, use hand megameter safer, more hommization.
Description
Technical field
The utility model belongs to insulation measurement technical field.
Background technology
The insulation measurement of electrical equipment is to check insulation of electrical installation state and ensure operating personnel's personal safety
Important means.At present, manual megohmmeter is to measure the most frequently used portable apparatus of insulaion resistance, in order to accurately measure insulated electro
Resistance, the rotating speed of megameter is no less than 120r/min；The p-wire that megameter should be first extracted after each insulation measurement reading connects
Line end L could stop shaking megameter, prevent measured insulator reverse charge from burning out megameter gauge outfit, and enter to measured insulator
Row is substantially discharged；In order to do absorptance experiment, resistance during 15s and 60s need to be measured.
The p-wire terminals L that megameter should be first extracted after each insulation measurement reading could stop shaking megameter,
If forgetting the step, just during very possible damage megameter, particularly student training.In addition, traditional megameter is not right
Time of measuring carries out the function of timing, therefore, it is difficult to do absorptance experiment.Its automation and intelligence degree are low, need two
People operates together, inefficiency.
The content of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and providing one kind automatic discharging and can send electric discharge
Prompt tone, use safer, the more megameter of hommization.
The technical scheme that the utility model is provided is as follows：
The utility model increases corresponding module and is transformed on the basis of the hand pointer megameter of tradition.
A kind of manual megohmmeter for being capable of automatic discharging, including for be driven hand rotate gear, and shake the hand turn
The internal generator structure that motivation structure is connected, it is characterised in that：Internal generator structure is connected with DC voltage-stabilizing module, DC voltage-stabilizing
Module connects the charge and discharge control end of single-chip microcomputer to automatic discharging module for power supply, automatic discharging module.
The automatic discharging module is provided with relay, and relay coil is serially connected in the discharge control terminal and ground of single-chip microcomputer
Between, relay normally open switch is serially connected between the L ' ends inside megameter and megameter outside L ends, and the one of relay normally closed switch
End connection megameter outside L ends, the other end of normally closed switch is gone here and there be grounded after buffer resistance, buzzer successively.
The utility model effectively prevents operating personnel from forgetting to discharge or discharge not exclusively to cause to burn out gauge outfit.Can also basis
The length of prompt tone of discharging monitors discharge process.
Further, also including USB emergent charging modules, USB emergent chargings module is connected with DC voltage-stabilizing module.
Further, also including LED emergency lighting modules, LED emergency lightings module is connected with DC voltage-stabilizing module.LED
Emergency light has illumination functions, particularly can provide illumination when dark interior is tested, and is unlikely to experimenter in urgent feelings
It is flurried under condition, be at a loss, it is ensured that the personal safety of experimenter.
Further, also including key-press module, key-press module is connected with the input of single-chip microcomputer.
Further, the DC voltage-stabilizing module is powered for single-chip microcomputer, when hand rotating speed reaches setting speed, inside hair
Electric power generation causes that single-chip microcomputer is started working, and the charge and discharge control end control automatic discharging module of single-chip microcomputer charges, and works as hand traverse
When speed is less than setting speed, the charge and discharge control end control automatic discharging module discharge of single-chip microcomputer.
Advantage of the present utility model and good effect are:
The utility model has automatic discharging and sends the function of electric discharge prompt tone, effectively prevents operating personnel from forgetting electric discharge
Or electric discharge not exclusively causes to burn out gauge outfit, moreover it is possible to which the length according to the prompt tone that discharges monitors discharge process.LED emergency luminaires
Have an illumination functions, particularly can provide illumination when dark interior is tested, be unlikely to experimenter it is in case of emergency flurried,
It is at a loss, it is ensured that the personal safety of experimenter.Hand megameter has USB interface, does not have electricity in emergency circumstances in mobile phone, can
Charge power supply is provided to be generated electricity using megameter.Take full advantage of Digital Signal Processing and single-chip microcomputer (single-chip microcomputer) control skill
Art, effectively overcome traditional megameter cannot automatic discharging and the few shortcoming of function, hand megameter is used more
Safety, more hommization.
Brief description of the drawings
Fig. 1 is control principle block diagram of the present utility model；
Fig. 2 is the structure principle chart of the DC voltage-stabilizing module of preferred embodiment of the present utility model；
Fig. 3 is the automatic discharging and electric discharge cue circuit of preferred embodiment of the present utility model；
Fig. 4 is the circuit diagram of the emergent charging circuit of preferred embodiment of the present utility model；
Fig. 5 is the circuit diagram of the emergency lighting circuit of preferred embodiment of the present utility model；
Fig. 6 is the single-chip microcomputer and peripheral circuit connection figure of preferred embodiment of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model example, the technical scheme in the utility model embodiment is entered to advance
One step is described.
The utility model is in the hand pointer megameter of tradition（With reference to model：ZC25）On the basis of increase interlock circuit
And module transformation is formed.
As shown in figure 1, a kind of manual megohmmeter for being capable of automatic discharging, including the hand rotate gear for being driven,
And the internal generator structure that rotating mechanism of shaking the hand is connected, it is characterised in that：Internal generator structure is connected with DC voltage-stabilizing mould
Block, DC voltage-stabilizing module connects the charge and discharge control end of single-chip microcomputer to automatic discharging module for power supply, automatic discharging module.
As shown in Fig. 2 embodiment is generated electricity using the rotation of megameter internal mechanism is shaken manually, the electricity for issuing is through DC voltage-stabilizing
Transformer pressure-reducing in module, diode rectification, capacitor filtering, mu balanced circuit obtain 5V power supplys.On the one hand can be carried for single-chip microcomputer
Power supply source, on the other hand can be used to illuminate when emergent and USB charges.
As shown in Fig. 2 the automatic discharging module includes relay, buffer resistance and buzzer, the coil one of relay
End is connected with single-chip microcomputer P1.1 pins, other end ground connection, and the normally opened contact of relay is connected on the L ' ends inside megameter, public to touch
Point is connected on L ends outside megameter, and normally-closed contact is connected with buffer resistance, and No. 1 pin of the buffer resistance other end and buzzer is connected,
No. 2 pins of buzzer are connected with the E ends of megameter, and tested insulator two ends are connected with megameter measurement end L and E respectively, work as hand
When rocking-turn speed reaches certain rotating speed, internal generator generates electricity and causes that single-chip microcomputer is started working, and single-chip microcomputer passes through P1.1 port controllings
Actuating of relay adhesive so that the L ' terminations of megameter outside L ends and inside are logical, start to measure the insulated electro of tested insulator
Resistance, starts simultaneously at timing, records the time of measurement.
As shown in figure 3, buffer resistance and buzzer are series between megameter L ends and E ends.After being measured, turn
When speed is less than certain value, single-chip microcomputer is powered off by P1.1 port controllings relay coil, normally-closed contact closure so that megameter L
End is connected with E ends through buzzer and buffer resistance, it is achieved thereby that automatic discharging and sending sound cue.Electric discharge starts
When, sound is larger, and carrying out sound then as electric discharge is gradually reduced, and after the completion of electric discharge, voice signal disappears.
As shown in figure 4, USB emergent chargings module is connected with DC voltage-stabilizing module.Do not have electricity in emergency circumstances in mobile phone, can
Charge power supply is provided to be generated electricity using megameter.USB emergent chargings circuit is mainly made up of USB interface and line, USB interface
No. 1 pin is connected with+the 5V of DC voltage-stabilizing module, No. 4 pins of USB interface and the ground of DC voltage-stabilizing module（GND）It is connected.
As shown in figure 5, LED emergency lightings module is connected with DC voltage-stabilizing module.LED emergency lightings module by switch S1,
LED and current limliting divider resistance R6 are constituted, in case of emergency through switching S1 control LED light on and off.Switch S1 static contact with
+ the 5V of DC voltage-stabilizing module is connected, and normally opened moving contact is connected with resistance R6, and the other end of resistance R6 is connected with the anode of LED,
The negative electrode of LED and the ground of D.C. regulated power supply（GND）It is connected.
As shown in fig. 6, single-chip microcomputer and peripheral circuit connection figure；Specifically describe the composition of circuit, button K1, electric capacity C3
Reset circuit of SCM is constituted with resistance R7, button K1 and electric capacity C3 is in parallel, one terminates VCC, the other end and single-chip microcomputer RST phases
Even, resistance R7 one end is connected with single-chip microcomputer RST, another termination GND；Electric capacity C4, electric capacity C5 and crystal oscillator XTAL composition oscillating circuits,
For single-chip microcomputer provides clock signal, the termination GND of electric capacity C4 mono-, the other end meets single-chip microcomputer XTAL2, and electric capacity C5 mono- terminates GND, another
Termination single-chip microcomputer XTAL1, crystal oscillator XTAL two ends are connected with XTAL1, XTAL2 of single-chip microcomputer respectively；Single-chip microcomputer P1.1 pins with from
Dynamic electric discharge and electric discharge cue circuit relay coil one end are connected.
Preferably, as shown in figure 1, embodiment also includes key-press module, key-press module is connected with the input of single-chip microcomputer.
Preferred embodiment of the present utility model is these are only, is not used to limit the utility model, it is all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (6)
1. a kind of manual megohmmeter for being capable of automatic discharging, including the hand rotate gear for being driven, and rotation of shaking the hand
The internal generator structure that mechanism is connected, it is characterised in that：Internal generator structure is connected with DC voltage-stabilizing module, DC voltage-stabilizing mould
Block connects the charge and discharge control end of controller to automatic discharging module for power supply, automatic discharging module.
2. a kind of manual megohmmeter for being capable of automatic discharging according to claim 1, it is characterised in that described to put automatically
Electric module is provided with relay, and relay coil is serially connected between the discharge control terminal of controller and ground, relay normally open switch
Between the L ' ends being serially connected in inside megameter and megameter outside L ends, one end connection megameter outside L of relay normally closed switch
End, the other end of normally closed switch is gone here and there be grounded after buffer resistance, buzzer successively.
3. a kind of manual megohmmeter for being capable of automatic discharging according to claim 1, it is characterised in that also including USB
Emergent charging module, USB emergent chargings module is connected with DC voltage-stabilizing module.
4. a kind of manual megohmmeter for being capable of automatic discharging according to claim 1, it is characterised in that also including LED
Emergency lighting module, LED emergency lightings module is connected with DC voltage-stabilizing module.
5. a kind of manual megohmmeter for being capable of automatic discharging according to claim 1, it is characterised in that also including button
Module, key-press module is connected with the input of single-chip microcomputer.
6. a kind of manual megohmmeter for being capable of automatic discharging according to claim 2, it is characterised in that the direct current is steady
Die block is powered for controller, and when hand rotating speed reaches setting speed, internal generator generates electricity and causes that controller is started working,
The charge and discharge control end control automatic discharging module of controller charges, and when hand rotating speed is less than setting speed, controller cannot
Normal work, the charge and discharge control end of charging stops output charging signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621412085.5U CN206270413U (en) | 2016-12-21 | 2016-12-21 | A kind of manual megohmmeter for being capable of automatic discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621412085.5U CN206270413U (en) | 2016-12-21 | 2016-12-21 | A kind of manual megohmmeter for being capable of automatic discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206270413U true CN206270413U (en) | 2017-06-20 |
Family
ID=59046503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621412085.5U Expired - Fee Related CN206270413U (en) | 2016-12-21 | 2016-12-21 | A kind of manual megohmmeter for being capable of automatic discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206270413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008661A (en) * | 2022-12-18 | 2023-04-25 | 哈尔滨理工大学 | A detection device for insulation layer of polypropylene cable |
| CN116338313A (en) * | 2023-03-29 | 2023-06-27 | 广东电网有限责任公司江门供电局 | A megohmmeter with protection function and its control method |
-
2016
- 2016-12-21 CN CN201621412085.5U patent/CN206270413U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116008661A (en) * | 2022-12-18 | 2023-04-25 | 哈尔滨理工大学 | A detection device for insulation layer of polypropylene cable |
| CN116338313A (en) * | 2023-03-29 | 2023-06-27 | 广东电网有限责任公司江门供电局 | A megohmmeter with protection function and its control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20181221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |