CN102565490A - Multimeter capable of preventing wrong gear selection - Google Patents
Multimeter capable of preventing wrong gear selection Download PDFInfo
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- CN102565490A CN102565490A CN2010105847779A CN201010584777A CN102565490A CN 102565490 A CN102565490 A CN 102565490A CN 2010105847779 A CN2010105847779 A CN 2010105847779A CN 201010584777 A CN201010584777 A CN 201010584777A CN 102565490 A CN102565490 A CN 102565490A
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Abstract
The invention provides a multimeter capable of preventing wrong gear selection. The multimeter comprises probes (10), a measurement module (11), a dial (12), a multi-gear button (13), a gear determination module (14), a voice module (15), a loud speaker (16), a master control one-chip microcomputer (17), a controlled switch (18) and a confirmation button (19). The gear determination module (14) that is connected with the multi-gear button (13) is used to determine a gear that is selected by the multi-gear button (13). The voice module (15) generates a voice signal that is used for prompting the selected gear according to a determination result of the gear determination module (14); and the voice signal is played by the loud speaker (16). After confirmation, the master control one-chip microcomputer (17) controls opening and closing of the controlled switch (18), so that the probes (10) and the measurement module (11) are connected to realize parameter measurement. According to the invention, beneficial effects are as follows: prompting and user confirmation processes are provided and thus it can be avoided that a user selects a wrong gear, so that overload damage caused by wrong gear selection by the multimeter can be effectively prevented.
Description
Technical field
The present invention relates to electronic multimeter, especially a kind of multimeter that prevents wrong choosing shelves.
Background technology
Multimeter is a kind of multifunction instrument instrument, has multiple measurement functions such as measured voltage values, resistance value, current value.Usually, multimeter is with the probe CC, and the built-in measurement module of multimeter body has the dial plate that shows reading in the outside of multimeter, also has many grades of knobs.The user is switched the measurement function of multimeter through this knob is aimed at different gears.For example, when this knob was chosen the DC voltage gear, the effect of multimeter was equivalent to a D.C. voltmeter, and will be parallel to element under test this moment with multimeter; Again for example, when this knob was chosen the DC current gear, the effect of multimeter was equivalent to the DC current table, and will connect multimeter this moment with element under test.It is thus clear that, selected gear not simultaneously, the connected mode of multimeter also must corresponding adjustment, if selected gear and connected mode do not match, just might cause multimeter impaired because of overload.In addition, multimeter has the gear of different ranges toward contact, if the range of the signal value of surveying and selected gear obviously do not match, also might cause overload.
In practical application, the user is owing to be unfamiliar with the operation of multimeter, or reason such as negligence, the situation of wrong choosing shelves occurs through regular meeting, and this is the one of the main reasons that causes the multimeter overload to damage.Though existing multimeter is provided with buzzer specially; Be used for when overload warning users break off test pencil immediately and connect; But mistake choosing shelves take place during owing to report to the police, and multimeter is switched on, thereby still can't prevent effectively to damage because of the multimeter that mistake choosing shelves cause.
Summary of the invention
To above-mentioned defective, the invention provides a kind of multimeter that prevents wrong choosing shelves, it adopts the current selected gear of method prompting user of voice or display reminding, and confirms that through the user back multimeter can insert circuit under test.
The multimeter of wrong choosing shelves that prevents of the present invention comprises: probe (10), measurement module (11), dial plate (12) and many grades of knobs (13); Gear judge module (14), voice module (15), loudspeaker (16); Main control singlechip (17), controlled switch (18) and ACK button (19); Wherein, gear judge module (14) connects many grades of knobs (13), judges many grades of knobs (13) selected gear; Voice module (15) generates the voice signal of pointing out selected gear according to the judged result of gear judge module (14), is play by loudspeaker (16); If the user connects ACK button (19), main control singlechip (17) control controlled switch (18) closure realizes parameter measurement thereby probe (10) and measurement module (11) are connected.
Preferably, said main control singlechip (17) detects the state of ACK button (19), and main control singlechip (17) control controlled switch (18) breaks off if ACK button (19) breaks off.Perhaps, preferably, main control singlechip (17) connects gear judge module (14) and obtains said judged result, and when said judged result changes, controls said controlled switch (18) and break off.
Further preferably, said measurement module (11) sends cue to said voice module (15) at input signal during greater than its security measurement scope, and voice module (15) generates the voice signal that gear is changed in prompting after receiving cue.
As another kind of embodiment, the multimeter of wrong choosing shelves that prevents of the present invention comprises: probe (20), measurement module (21); Dial plate (22) and many grades of knobs (23); Gear judge module (24), display module (25), LCD display (26); Main control singlechip (27), controlled switch (28) and ACK button (29); Wherein, gear judge module (24) connects many grades of knobs (23), judges many grades of knobs (23) selected gear; Display module (25) generates the shows signal of pointing out selected gear according to the judged result of gear judge module (24), is shown by LCD display (26); If the user connects ACK button (29), main control singlechip (27) control controlled switch (28) closure realizes parameter measurement thereby probe (20) and measurement module (21) are connected.
Preferably, said main control singlechip (27) detects the state of ACK button (29), and main control singlechip (27) control controlled switch (28) breaks off if ACK button (29) breaks off.Perhaps, preferably, main control singlechip (27) connects gear judge module (24) and obtains said judged result, and when said judged result changes, controls said controlled switch (28) and break off.
Further preferably, said measurement module (21) sends cue to said display module (25) at input signal during greater than its security measurement scope, and display module (25) generates the shows signal that LCD display (26) is glimmered after receiving cue.
The invention has the beneficial effects as follows: the mode through voice or demonstration is pointed out the user current selected gear, and has only after the user confirms through ACK button and just connect the measurement module in probe and the multimeter.The user passes through to accept the process of prompting and affirmation, can avoid perhaps not understanding the mistake choosing shelves that range state causes because of carelessness, thereby effectively prevent the overload damage that multimeter selects shelves to cause because of mistake.
Description of drawings
Fig. 1 is the multimeter structural representation of first preferred embodiment of the present invention;
Fig. 2 is the multimeter structural representation of second preferred embodiment of the present invention.
Embodiment
Combine accompanying drawing and preferred embodiment that the present invention is done further detailed explanation now.These accompanying drawings are the synoptic diagram of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
First preferred embodiment
Fig. 1 is the multimeter structural representation of first preferred embodiment of the present invention.As shown in Figure 1, multimeter of the present invention comprises probe 10, measurement module 11, and dial plate 12 and many grades of knobs 13, these parts are identical with existing multimeter.Multimeter of the present invention also comprises: gear judge module 14, voice module 15, loudspeaker 16, main control singlechip 17, controlled switch 18 and ACK button 19.Wherein, gear judge module 14 connects many grades of knobs 13, can judge many grades of knobs 13 selected gears according to the state of many grades of knobs 13, generates judged result; Gear judge module 14 can be exported the signal of a plurality of varying level values, or by the signal that multiple level "0" and level"1" make up, as judged result, represents many grades of knobs 13 current selected gears respectively.For example, gear judge module 14 can output level combination " 000 " be represented the DC voltage gear, and the DC current gear is represented in " 001 ", and the alternating voltage gear is represented in " 010 ", or the like.Voice module 15 generates the voice signal of pointing out selected gear according to the said judged result of gear judge module 14, is play by loudspeaker 16; Voice module 15 can adopt the chip with phonetic function; Wherein preserve suggestion voice in advance to different gears; For example voice suggestions such as " measuring DC voltage ", " measurement DC current ", " measurement alternating voltage " select suggestion voice to play according to judged result.The user can clearly understand the current selected gear of multimeter through listening to suggestion voice.If the current selected gear of multimeter is correct, then the user's affirmation button 19 that can connect multimeter is confirmed.ACK button 19 adopts triggering/reset switch; Promptly ACK button 19 is connected when the user presses ACK button 19 and keeps exerting pressure; After the user unclamped ACK button 19 pressure is disappeared, ACK button 19 automatically reset under the effect of inner elastomeric parts, breaks off connecting.Main control singlechip 17 connects ACK button 19 and detects its state, when ACK button 19 is connected, shows that the user confirms that current gear is correct, and then main control singlechip 17 control controlled switchs 18 closures realize parameter measurement thereby probe 10 is connected with measurement module 11.
After parameter measurement began, said main control singlechip 17 continued to detect in real time the state of ACK button 19.If the user unclamps this button, ACK button 19 automatically resets and is off-state, and then main control singlechip 17 control controlled switchs 18 break off.Like this, the user need pin ACK button 19 all the time in measuring process, promptly is disconnected once unclamping controlled switch 18, has only once more and could continue to measure through the gear prompting with after confirming.Prompting and affirmation process are all passed through in so each measurement, can prevent wrong choosing shelves effectively, guarantee multimeter safety.But the user must pin ACK button 19 all the time in measuring process, and this also can cause certain use inconvenience.
Under the situation of correct choosing shelves, also might be owing to reasons such as signal variation make measuring-signal exceed the security measurement scope of the measurement module 11 of multimeter.At this moment, multimeter need give the alarm at once and point out user's gear shift.Said measurement module 11 sends cues to said voice module 15 at input signal during greater than its security measurement scope, and voice module 15 generates the voice signal of prompting change gear after receiving cue, the voice suggestion that for example " overloads, ask gear shift ".
Second preferred embodiment
Fig. 2 is the multimeter structural representation of second preferred embodiment of the present invention.As shown in Figure 2, multimeter comprises probe 20, measurement module 21, dial plate 22 and many grades of knobs 23, and gear judge module 24, display module 25, LCD display 26, main control singlechip 27, controlled switch 28 and ACK button 29.Wherein, gear judge module 24 connects many grades of knobs 23, judges many grades of knob 23 selected gears.Display module 25 generates the shows signal of pointing out selected gear according to the judged result of gear judge module 24, is shown by LCD display 26.If the user connects ACK button 29, main control singlechip 27 control controlled switchs 28 closures realize parameter measurement thereby probe 20 is connected with measurement module 21.
In the present embodiment, main control singlechip 27 connects gear judge module 24 and obtains said judged result, and when said judged result changes, controls said controlled switch 28 and break off.Through this control mode; Even the user has unclamped ACK button 19 in measuring process, multimeter also can continue to measure, and has only the selection gear of having adjusted multimeter as the user; Main control singlechip 27 just can be controlled said controlled switch 28 and break off, and starts the operation of above-mentioned prompting and affirmation once more.
Equally; Said measurement module 21 sends cues to said display module 25 at input signal during greater than its security measurement scope; Display module 25 generates the shows signal that makes LCD display 26 flickers after receiving cue, for example make LCD display 26 flickers realize reporting to the police.
Certainly; Display module in the present embodiment and LCD display also can use voice module and the loudspeaker in first preferred embodiment to replace; Can also use display module and LCD display in the present embodiment to replace voice module and loudspeaker in first preferred embodiment, this variation is all within protection scope of the present invention.
The invention has the beneficial effects as follows process, can avoid the user perhaps not understand the mistake choosing shelves that range state causes, thereby effectively prevent the overload damage that multimeter selects shelves to cause because of mistake because of carelessness with voice/display reminding and user's affirmation.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the instructions, must confirm its technical scope according to the claim scope.
Claims (8)
1. a multimeter that prevents wrong choosing shelves comprises probe (10), measurement module (11); Dial plate (12) and many grades of knobs (13); It is characterized in that: also comprise gear judge module (14), voice module (15), loudspeaker (16); Main control singlechip (17), controlled switch (18) and ACK button (19); Wherein, gear judge module (14) connects many grades of knobs (13), judges many grades of knobs (13) selected gear; Voice module (15) generates the voice signal of pointing out selected gear according to the judged result of gear judge module (14), is play by loudspeaker (16); If the user connects ACK button (19), main control singlechip (17) control controlled switch (18) closure realizes parameter measurement thereby probe (10) and measurement module (11) are connected.
2. multimeter according to claim 1 is characterized in that: said main control singlechip (17) detects the state of ACK button (19), and main control singlechip (17) control controlled switch (18) breaks off if ACK button (19) breaks off.
3. multimeter according to claim 1 is characterized in that: main control singlechip (17) connects gear judge module (14) and obtains said judged result, and when said judged result changes, controls said controlled switch (18) and break off.
4. according to claim 2 or 3 described multimeters; It is characterized in that: said measurement module (11) sends cue to said voice module (15) at input signal during greater than its security measurement scope, and voice module (15) generates the voice signal that gear is changed in prompting after receiving cue.
5. a multimeter that prevents wrong choosing shelves comprises: probe (20), measurement module (21); Dial plate (22) and many grades of knobs (23) is characterized in that, also comprise: gear judge module (24); Display module (25); LCD display (26), main control singlechip (27), controlled switch (28) and ACK button (29); Wherein, gear judge module (24) connects many grades of knobs (23), judges many grades of knobs (23) selected gear; Display module (25) generates the shows signal of pointing out selected gear according to the judged result of gear judge module (24), is shown by LCD display (26); If the user connects ACK button (29), main control singlechip (27) control controlled switch (28) closure realizes parameter measurement thereby probe (20) and measurement module (21) are connected.
6. multimeter according to claim 5 is characterized in that: said main control singlechip (27) detects the state of ACK button (29), and main control singlechip (27) control controlled switch (28) breaks off if ACK button (29) breaks off.
7. multimeter according to claim 5 is characterized in that: main control singlechip (27) connects gear judge module (24) and obtains said judged result, and when said judged result changes, controls said controlled switch (28) and break off.
8. according to claim 6 or 7 described multimeters; It is characterized in that: said measurement module (21) sends cue to said display module (25) at input signal during greater than its security measurement scope, and display module (25) generates the shows signal that LCD display (26) is glimmered after receiving cue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105847779A CN102565490A (en) | 2010-12-13 | 2010-12-13 | Multimeter capable of preventing wrong gear selection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105847779A CN102565490A (en) | 2010-12-13 | 2010-12-13 | Multimeter capable of preventing wrong gear selection |
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| CN102565490A true CN102565490A (en) | 2012-07-11 |
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| CN2010105847779A Pending CN102565490A (en) | 2010-12-13 | 2010-12-13 | Multimeter capable of preventing wrong gear selection |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360122A (en) * | 2014-11-27 | 2015-02-18 | 哈尔滨金都太阳能科技有限公司 | Intelligent digital multimeter with voice broadcast function |
| CN104865431A (en) * | 2015-05-08 | 2015-08-26 | 国网山西省电力公司电力科学研究院 | Universal meter measuring gear warning system |
| CN107942116A (en) * | 2017-12-28 | 2018-04-20 | 优利德科技(中国)有限公司 | A kind of multi-function multimeter and its measuring method with voice control function |
| CN107957521A (en) * | 2017-10-09 | 2018-04-24 | 珠海格力电器股份有限公司 | Circuit adjusting method and device and relay protection circuit |
| CN109655648A (en) * | 2019-01-30 | 2019-04-19 | 李殿东 | A kind of multimeter and method with different acousto-optic hint difference measured values |
| CN109959812A (en) * | 2019-04-28 | 2019-07-02 | 深圳市兴威帆电子技术有限公司 | The test pencil and control method of multimeter with measurement instruction function |
| CN110568241A (en) * | 2019-09-30 | 2019-12-13 | 贵州电网有限责任公司 | anti-misoperation multimeter and use method thereof |
| CN111751606A (en) * | 2020-05-21 | 2020-10-09 | 国家电网有限公司技术学院分公司 | Intelligent power regulation and control box and regulation and control method |
| CN114062744A (en) * | 2021-11-12 | 2022-02-18 | 沈阳铁路信号有限责任公司 | Protection circuit and method of resistance measurement circuit |
-
2010
- 2010-12-13 CN CN2010105847779A patent/CN102565490A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360122A (en) * | 2014-11-27 | 2015-02-18 | 哈尔滨金都太阳能科技有限公司 | Intelligent digital multimeter with voice broadcast function |
| CN104865431A (en) * | 2015-05-08 | 2015-08-26 | 国网山西省电力公司电力科学研究院 | Universal meter measuring gear warning system |
| CN107957521A (en) * | 2017-10-09 | 2018-04-24 | 珠海格力电器股份有限公司 | Circuit adjusting method and device and relay protection circuit |
| CN107942116A (en) * | 2017-12-28 | 2018-04-20 | 优利德科技(中国)有限公司 | A kind of multi-function multimeter and its measuring method with voice control function |
| CN109655648A (en) * | 2019-01-30 | 2019-04-19 | 李殿东 | A kind of multimeter and method with different acousto-optic hint difference measured values |
| CN109959812A (en) * | 2019-04-28 | 2019-07-02 | 深圳市兴威帆电子技术有限公司 | The test pencil and control method of multimeter with measurement instruction function |
| CN109959812B (en) * | 2019-04-28 | 2022-03-29 | 深圳市兴威帆电子技术有限公司 | Meter pen of multimeter with measurement indication function and control method |
| CN110568241A (en) * | 2019-09-30 | 2019-12-13 | 贵州电网有限责任公司 | anti-misoperation multimeter and use method thereof |
| CN111751606A (en) * | 2020-05-21 | 2020-10-09 | 国家电网有限公司技术学院分公司 | Intelligent power regulation and control box and regulation and control method |
| CN111751606B (en) * | 2020-05-21 | 2023-10-24 | 国家电网有限公司技术学院分公司 | Intelligent power supply regulation and control box and regulation and control method |
| CN114062744A (en) * | 2021-11-12 | 2022-02-18 | 沈阳铁路信号有限责任公司 | Protection circuit and method of resistance measurement circuit |
| CN114062744B (en) * | 2021-11-12 | 2023-02-10 | 沈阳铁路信号有限责任公司 | Protection circuit and method of resistance measurement circuit |
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Application publication date: 20120711 |