CN108828285A - Automatic alarm device and multimeter - Google Patents
Automatic alarm device and multimeter Download PDFInfo
- Publication number
- CN108828285A CN108828285A CN201810965256.4A CN201810965256A CN108828285A CN 108828285 A CN108828285 A CN 108828285A CN 201810965256 A CN201810965256 A CN 201810965256A CN 108828285 A CN108828285 A CN 108828285A
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- microprocessor
- signal
- multimeter
- alarm device
- automatic alarm
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- 230000001681 protective effect Effects 0.000 claims abstract description 53
- 238000012360 testing method Methods 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/12—Circuits for multi-testers, i.e. multimeters, e.g. for measuring voltage, current, or impedance at will
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The present invention relates to electric measurement security technology areas, and in particular to a kind of automatic alarm device and multimeter, wherein automatic alarm device includes the signal processing module, microprocessor and alarm module being sequentially connected electrically；Microprocessor generates driving signal for controlling signal processing module；Signal processing module is used to detect whether the protective tube fuses to obtain testing result according to driving signal, and will test result and be sent to microprocessor；Microprocessor is also used to the control alarm module alarm when testing result is protective tube fusing.Automatic alarm device and multimeter provided by the invention improve user and do not know protective tube fusing and continue to use multimeter and carry out the problem of electric measurement is easy to happen safety accident.
Description
Technical field
The present invention relates to electric measurement security technology areas, in particular to a kind of automatic alarm device and multimeter.
Background technique
With electricity consumption Frequent Accidents, increasingly by the attention of people, electric measurement is in safety utilization of electric power safely for safety utilization of electric power
Indispensable a part.
Multimeter is widely used in electric measurement, since some maloperations in use can frequently result in ten thousand
With the protective tube fusing in table, user does not know protective tube fusing and continues to use multimeter progress electric measurement and be easy to happen
Safety accident.
Summary of the invention
In view of this, the embodiment of the present invention is designed to provide a kind of automatic alarm device and multimeter, on improving
User is stated not know protective tube fusing and continue to use multimeter and carry out the problem of electric measurement is easy to happen safety accident.
The embodiment of the invention provides a kind of automatic alarm devices, are applied to multimeter, inside to the multimeter
Protective tube detected, the automatic alarm device includes the signal processing module, microprocessor and alarm being sequentially connected electrically
Module；The microprocessor generates driving signal for controlling the signal processing module；The signal processing module be used for according to
It detects whether the protective tube fuses to obtain testing result according to the driving signal, and the testing result is sent to described micro-
Processor；The microprocessor is also used to control the alarm module report when the testing result is protective tube fusing
It is alert.
Further, the automatic alarm device further includes signal input part, at the signal input part and the signal
Reason module, protective tube are electrically connected.
Further, the multimeter further includes COM input terminal, and the signal input part is set to the multimeter
COM input terminal.
Further, the signal processing module includes comparator and driving circuit, and the comparator and the driving are electric
Road electrical connection, the comparator, driving circuit be electrically connected with the microprocessor, and the comparator, driving circuit are and institute
State signal input part electrical connection；The driving circuit is concurrent for generating the driving signal under the control of the microprocessor
It send to the signal input part so that the signal input part, which generates, feedback signal and is sent to the comparator, is also used in institute
It states and generates the driving signal under the control of microprocessor and be sent to the comparator；The comparator is used for according to the drive
Dynamic signal and the feedback signal obtain testing result, and the testing result is sent to the microprocessor.
Further, the comparator includes first input end, the second input terminal and output end, the first input end with
The signal input part electrical connection, second input terminal are electrically connected with the driving circuit, the output end and micro- place
Manage device electrical connection.
Further, the alarm module includes at least one of display screen, buzzer, alarm lamp and vibrator.
Further, the automatic alarm device further includes power module, the power module and the signal processing mould
Block, microprocessor and alarm module are electrically connected.
Further, the power module includes at least one of power supply adaptor and rechargeable battery.
A kind of multimeter, including above-mentioned automatic alarm device, the automatic alarm device includes the letter being sequentially connected electrically
Number processing module, microprocessor and alarm module；The microprocessor generates driving letter for controlling the signal processing module
Number；The signal processing module is used to detect whether the protective tube fuses to obtain testing result according to the driving signal, and
The testing result is sent to the microprocessor；The microprocessor is also used to when the testing result be the protective tube
When fusing, the alarm module alarm is controlled.The multimeter further includes protective tube, and the protective tube and the automatic alarm fill
Set electrical connection.
Further, the multimeter further includes COM input terminal, and the protective tube is set to the COM input terminal.
Compared with the prior art, the invention has the advantages that：
Whether a kind of automatic alarm device and multimeter provided by the invention are melted using signal processing module detection protective tube
It is disconnected to obtain testing result, and will test result and be sent to microprocessor, when testing result is that protective tube fuses, microprocessor control
Alarm equipment alarm processed has been fused with the protective tube for informing user's multimeter, do not know so as to improve user protective tube fusing and after
It is continuous to carry out the problem of electric measurement is easy to happen safety accident using multimeter.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 shows the block diagram of automatic alarm device provided by the embodiment of the present invention.
Fig. 2 shows the structural schematic diagrams of multimeter provided by the embodiment of the present invention.
Fig. 3 shows the block diagram of automatic alarm device provided by the embodiment of the present invention.
Fig. 4 shows the block diagram of multimeter provided by the embodiment of the present invention.
Icon：10- multimeter；100- automatic alarm device；110- microprocessor；120- signal processing module；121- drives
Dynamic circuit；122- comparator；130- signal input part；140- alarm module；150- power module；200- protective tube；300-COM
Input terminal.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "left", "right", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.
In the description of the present invention, it is also necessary to explanation, herein, such as first and second or the like relationship art
Language is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying this
There are any actual relationship or orders between a little entities or operation.The terms such as term "horizontal", "vertical", " pendency "
It is not offered as requiring component abswolute level or pendency, but can be slightly tilted.As "horizontal" only refers to that its direction is opposite " perpendicular
It is more horizontal for directly ", it is not to indicate that the structure is had to fully horizontally, but can be slightly tilted.Term " includes ",
"comprising" or any other variant thereof is intended to cover non-exclusive inclusion so that include a series of elements process,
Method, article or equipment not only include those elements, but also including other elements that are not explicitly listed, or are also wrapped
It includes as elements inherent to such a process, method, article, or device.In the absence of more restrictions, by sentence " including
One ... " limit element, it is not excluded that there is also another in the process, method, article or apparatus that includes the element
Outer identical element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
With reference to the accompanying drawing, it elaborates to some embodiments of the present invention.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
First embodiment
Fig. 1 and Fig. 2 are please referred to, a kind of automatic alarm device 100 is present embodiments provided, is applied to multimeter 10,
For detecting to the protective tube 200 inside multimeter 10, multimeter 10 further includes 4 input terminals, respectively V Ω input
End, COM input terminal 300, mA input terminal, the end 10A input terminal.When multimeter 10 carries out electric measurement, need selectively to connect
Enter the input terminal of multimeter 10.Automatic alarm device 100 includes microprocessor 110, signal processing module 120, signal input part
130, alarm module 140 and power module 150, signal processing module 120, alarm module 140 and power module 150 with micro- place
Device 110 to be managed to be electrically connected, microprocessor 110, signal processing module 120 and alarm module 140 are electrically connected with power module 150,
Signal input part 130 is electrically connected with protective tube 200, power module 150 be used for microprocessor 110, signal processing module 120 and
Alarm module 140 provides power supply.
In embodiments of the present invention, microprocessor 110 is electrically connected with signal processing module 120, for controlling the signal
Processing module 120 generates driving signal.Driving signal can be voltage or current.Microprocessor 110 can be controlled by sending
System instruction controls signal processing module 120 to signal processing module 120 and generates driving signal.
As an implementation, microprocessor 110 can be a kind of IC chip, have signal handling capacity,
Microprocessor 110 can be general processor, including central processing unit (Central Processing Unit, CPU), network
Processor (Network Processor, NP) etc., can also be digital signal processor, specific integrated circuit, field-programmable
Gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
Referring to Fig. 3, in embodiments of the present invention, signal processing module 120 and microprocessor 110, signal input part 130
It is electrically connected, for whether fusing to obtain testing result according to driving signal detection protective tube 200, and will test result and be sent to
Microprocessor 110.Signal processing module 120 includes driving circuit 121 and comparator 122, driving circuit 121 and comparator 122
Electrical connection, driving circuit 121, comparator 122 be electrically connected with microprocessor 110, driving circuit 121, comparator 122 with letter
Number input terminal 130 is electrically connected.
Driving circuit 121 is electrically connected with comparator 122, microprocessor 110 and signal input part 130, in Wei Chu
It manages and generates driving signal under the control of device 110 and be sent to signal input part 130 so that signal input part 130 generates feedback signal
And it is sent to comparator 122, be also used to generate driving signal under the control of microprocessor 110 and is sent to comparator 122.Instead
Feedback signal can be voltage or current corresponding with the driving signal.It is to be understood that when driving signal is voltage, instead
Feedback signal is also voltage；When driving signal is electric current, feedback signal is also electric current.Optionally, driving circuit 121 can be letter
Single amplifying circuit amplifies to obtain driving signal by the control instruction sent to microprocessor 110, and by the driving
Signal is sent to signal input part 130 so that signal input part 130, which generates, feedback signal and is sent to comparator 122, is also used to
The driving signal is sent to comparator 122.
Comparator 122 is electrically connected with driving circuit 121, microprocessor 110 and signal input part 130, for according to drive
Dynamic signal and feedback signal obtain testing result, and will test result and be sent to microprocessor 110.Comparator 122 can be, but
It is not limited to zero passage voltage comparator, voltage comparator, window comparator, hysteresis loop comparator etc..Comparator 122 includes the first input
End, the second input terminal and output end, first input end are electrically connected with signal input part 130, the second input terminal and driving circuit 121
Electrical connection, output end are electrically connected with microprocessor 110.The first input end of comparator 122 is electrically connected with signal input part 130,
For receiving the feedback signal of the generation of signal input part 130；Second input terminal of comparator 122 is electrically connected with driving circuit 121,
For receiving the driving signal of the transmission of driving circuit 121；The output end of comparator 122 is electrically connected with microprocessor 110, and being used for will
The testing result of generation is sent to microprocessor 110.Feedback signal is compared by comparator 122 with driving signal, and is exported
Testing result.For example, testing result, which is 1, thinks that protective tube 200 fuses, testing result is 0 and thinks that protective tube 200 is unmelted
Disconnected, when feedback signal and driving signal are voltage, and driving signal is 5V, feedback signal 0V, and comparator 122 compares driving
Signal 5V and feedback signal 0V, obtains testing result 1, then can be understood as the fusing of protective tube 200, and will test the hair of result 1
It send to microprocessor 110.Specifically, comparator 122 can be LM324, LM358, LM339, LM393 and UA741 etc..
In embodiments of the present invention, driving circuit 121, the comparator of signal input part 130 and signal processing module 120
122 and the protective tube 200 of multimeter 10 be electrically connected, for generating feedback letter when driving circuit 121 sends driving signal
Number and be sent to comparator 122.The signal input part 130 is set to the COM input terminal 300 of the multimeter 10.Optionally,
Signal input part 130 can be electrically connected with the both ends of protective tube 200.Signal input part 130 receives the driving letter of driving circuit 121
Number and the driving signal is sent to one end of the protective tube 200, driving signal is inputted from one end of protective tube 200, from
The signal of the other end output of protective tube 200 is then feedback signal, and the feedback signal is sent to by signal input part 130 to be compared
Device 122.
In embodiments of the present invention, alarm module 140 is electrically connected with microprocessor 110, for receiving when microprocessor 110
When the testing result arrived is that protective tube 200 fuses, alarm under the control of the micro-controller.Alarm module 140 may include
At least one of display screen, buzzer, alarm lamp and vibrator.It is to be understood that alarm module 140 can be display screen and
Buzzer is also possible to integrate the combined aural and visual alarm of buzzer and alarm lamp, can also be vibrator and alarm lamp etc..It can
Selection of land, alarm module 140 can select display screen and buzzer, and display screen and buzzer are electrically connected with microprocessor 110, when
When the testing result that microprocessor 110 receives is that protective tube 200 fuses, microprocessor 110 is also used to control display screen and bee
Ring device open, at this point, display screen can show symbol "！", buzzer issues the peace of " having electric danger, please replace protective tube in time "
Full voice prompt prevents user not know that protective tube 200 is molten to prompt the protective tube 200 of user's multimeter 10 to fuse
Break and continues to use the multimeter 10 and carry out the case where electric measurement is easy to happen safety accident.
In other embodiments of the invention, alarm module 140 can select vibrator and alarm lamp.Vibrator and alarm
Lamp is electrically connected with microprocessor 110, when the testing result that microprocessor 110 receives is that protective tube 200 fuses, micro process
Device 110 controls vibrator and opens, and alarm lamp is bright, and vibrator issues the vibration of high frequency a little, can generate the feeling of similar electric shock, right
The user for continuing to use the multimeter 10 of the fusing of protective tube 200 carries out tactile alert, and alarm lamp is bright to propose user's progress vision
It wakes up, by visual alerts and tactile alert, user can more be made to receive the prompt letter that 10 protective tube 200 of multimeter has fused
Breath.
In embodiments of the present invention, power module 150 and microprocessor 110, signal processing module 120 and alarm module
140 are electrically connected, and power module 150 is used to provide electric power to microprocessor 110, signal processing module 120 and alarm module 140
Supply.Power module 150 can be at least one of power supply adaptor and rechargeable battery.
As an implementation, power module 150 can select power supply adaptor, power supply adaptor and microprocessor
110, signal processing module 120 and alarm module 140 are electrically connected, and power supply adaptor is converted to the exchange household electricity of 220V
The DC power supply of microprocessor 110, signal processing module 120 and alarm module 140 can be given.
The working principle of automatic alarm device 100 provided in an embodiment of the present invention：Microprocessor 110 send control instruction to
The driving circuit 121 of signal processing module 120 is so that driving circuit 121 generates driving signal, and driving circuit 121 is by the driving
Signal is sent to signal input part 130 and comparator 122, and driving signal generates feedback signal through signal input part 130 and sends
To comparator 122, the driving signal of comparator 122 and feedback signal obtain testing result, and microprocessor 110 is also used to
When testing result is that protective tube 200 fuses, control alarm module 140 is alarmed.
Second embodiment
Multimeter 10 provided by the embodiment of the present invention, basic structure and principle and the technical effect and first of generation are in fact
It is identical to apply example, to briefly describe, the present embodiment part does not refer to place, can refer to corresponding contents in first embodiment.
Referring to Fig. 4, multimeter 10 includes protective tube 200, automatic alarm device 100 and 4 input terminals, 4 input terminals
Respectively V Ω input terminal, COM input terminal 300, mA input terminal, the end 10A input terminal.When multimeter 10 carries out electric measurement, need
It is selectively accessing the input terminal of multimeter 10.Protective tube 200 is electrically connected with automatic alarm device 100, protective tube 200 and from
The input signal end 130 of dynamic warning device 100 may be disposed at the COM input terminal 300.
In conclusion the embodiment of the present invention provides a kind of automatic alarm device and multimeter, automatic alarm device include according to
Signal input part, signal processing module, microprocessor and the warning circuit of secondary electrical connection, microprocessor send control instruction to letter
For the driving circuit of number processing module so that driving circuit generates driving signal, the driving signal is sent to signal by driving circuit
Input terminal and comparator, driving signal generate feedback signal through signal input part and are sent to comparator, and comparator is relatively more described
Driving signal and feedback signal obtain testing result, and microprocessor is also used to when testing result is protective tube fusing, control report
Alert module alarm.The present invention may be implemented to detect the protective tube inside multimeter, when detecting protective tube fusing, into
Row alarm prevents user not know protective tube fusing and continue to use the general-purpose with the timely user reminded using multimeter
Table carries out the case where electric measurement is easy to happen safety accident.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of automatic alarm device, which is characterized in that be applied to multimeter, for the protective tube inside the multimeter into
Row detection, the automatic alarm device includes the signal processing module, microprocessor and alarm module being sequentially connected electrically；
The microprocessor generates driving signal for controlling the signal processing module；
The signal processing module is used to detect whether the protective tube fuses to obtain testing result according to the driving signal, and
The testing result is sent to the microprocessor；
The microprocessor is also used to control the alarm module alarm when the testing result is protective tube fusing.
2. automatic alarm device as described in claim 1, which is characterized in that the automatic alarm device further includes signal input
End, the signal input part are electrically connected with the signal processing module, protective tube.
3. automatic alarm device as claimed in claim 2, which is characterized in that the multimeter further includes COM input terminal, described
Signal input part is set to the COM input terminal of the multimeter.
4. automatic alarm device as claimed in claim 2, which is characterized in that the signal processing module includes comparator and drive
Dynamic circuit, the comparator are electrically connected with the driving circuit, and the comparator, driving circuit are electrically connected with the microprocessor
It connects, the comparator, driving circuit are electrically connected with the signal input part；
The driving circuit under the control of the microprocessor for generating the driving signal and to be sent to the signal defeated
Enter to hold so that the signal input part, which generates, feedback signal and is sent to the comparator, is also used to the control in the microprocessor
System is lower to be generated the driving signal and is sent to the comparator；
The comparator is used to obtain testing result according to the driving signal and the feedback signal, and by the testing result
It is sent to the microprocessor.
5. automatic alarm device as claimed in claim 4, which is characterized in that the comparator includes first input end, second
Input terminal and output end, the first input end are electrically connected with the signal input part, second input terminal and the driving
Circuit electrical connection, the output end are electrically connected with the microprocessor.
6. automatic alarm device as described in claim 1, which is characterized in that the alarm module include display screen, buzzer,
At least one of alarm lamp and vibrator.
7. automatic alarm device as described in claim 1, which is characterized in that the automatic alarm device further includes power supply mould
Block, the power module are electrically connected with the signal processing module, microprocessor and alarm module.
8. automatic alarm device as claimed in claim 7, which is characterized in that the power module includes power supply adaptor and fills
At least one of battery.
9. a kind of multimeter, which is characterized in that including the described in any item automatic alarm devices of claim 1-8, the general-purpose
Table further includes protective tube, and the protective tube is electrically connected with the automatic alarm device.
10. multimeter as claimed in claim 9, which is characterized in that the multimeter further includes COM input terminal, the insurance
Pipe is set to the COM input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965256.4A CN108828285A (en) | 2018-08-22 | 2018-08-22 | Automatic alarm device and multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965256.4A CN108828285A (en) | 2018-08-22 | 2018-08-22 | Automatic alarm device and multimeter |
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| Publication Number | Publication Date |
|---|---|
| CN108828285A true CN108828285A (en) | 2018-11-16 |
Family
ID=64150519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810965256.4A Pending CN108828285A (en) | 2018-08-22 | 2018-08-22 | Automatic alarm device and multimeter |
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| CN (1) | CN108828285A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117783962A (en) * | 2023-12-28 | 2024-03-29 | 南方电网调峰调频发电有限公司检修试验分公司 | Protective tube detection system |
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| CN107170188A (en) * | 2017-07-07 | 2017-09-15 | 金川集团股份有限公司 | A kind of adjustable acousto-optic alarming device and its application method for DCS system |
| CN107918044A (en) * | 2017-12-28 | 2018-04-17 | 优利德科技(中国)有限公司 | A kind of universal meter current measurement overheat detecting and early warning device and method for early warning |
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