CN208780746U - Automatic alarm device and multimeter - Google Patents
Automatic alarm device and multimeter Download PDFInfo
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- CN208780746U CN208780746U CN201821362216.2U CN201821362216U CN208780746U CN 208780746 U CN208780746 U CN 208780746U CN 201821362216 U CN201821362216 U CN 201821362216U CN 208780746 U CN208780746 U CN 208780746U
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- microprocessor
- signal
- multimeter
- alarm device
- automatic alarm
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Abstract
The utility model 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 utility model 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 utility model relates to electric measurement security technology areas, in particular to a kind of automatic alarm device and ten thousand
Use table.
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.
Utility model content
In view of this, the utility model embodiment is designed to provide a kind of automatic alarm device and multimeter, to change
It is apt to above-mentioned user 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 utility model embodiment provides a kind of automatic alarm device, is applied to multimeter, for the multimeter
Internal protective tube is detected, the automatic alarm device include the signal processing module being sequentially connected electrically, microprocessor and
Alarm module；The microprocessor generates driving signal for controlling the signal processing module；The signal processing module is used
Whether fuse to obtain testing result according to the driving signal detection protective tube, and the testing result is sent to institute
State microprocessor；The microprocessor is also used to control the alarm mould when the testing result is protective tube fusing
Block alarm.
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 utility model has the following beneficial effects:
A kind of automatic alarm device and multimeter provided by the utility model are using signal processing module detection protective tube
No fusing obtains testing result, and will test result and be sent to microprocessor, when testing result is that protective tube fuses, micro process
Device control alarm equipment alarm has been fused with the protective tube for informing user's multimeter, does not know that protective tube fuses so as to improve user
And it continues to use multimeter and carries out the problem of electric measurement is easy to happen safety accident.
To enable the above objects, features, and advantages of the utility model 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 required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore not
It should be considered as the restriction to range, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other relevant attached drawings.
Fig. 1 shows the block diagram of automatic alarm device provided by the utility model embodiment.
Fig. 2 shows the structural schematic diagrams of multimeter provided by the utility model embodiment.
Fig. 3 shows the block diagram of automatic alarm device provided by the utility model embodiment.
Fig. 4 shows the block diagram of multimeter provided by the utility model embodiment.
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 utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole realities
Apply example.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be come with a variety of different configurations
Arrangement and design.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of the selected embodiment of the utility model.Based on the utility model
Embodiment, those skilled in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
It should also 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 term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.
It is in the description of the present invention, it should also be noted that, herein, such as first and second or the like pass
It is that term is only used to distinguish one entity or operation from another entity or operation, and not necessarily requires or secretly
Show that there are any actual relationship or orders between these entities or operation.Term "horizontal", "vertical", " pendency " etc.
Term is not offered as requiring component abswolute level or pendency, but can be slightly tilted.As "horizontal" only refers to its direction phase
It is more horizontal for "vertical", it is not to indicate that the structure is had to fully horizontally, but can be slightly tilted.Term " packet
Include ", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion so that including the mistake of a series of elements
Journey, method, article or equipment not only include those elements, but also including other elements that are not explicitly listed, either
It further include for elements inherent to such a process, method, article, or device.In the absence of more restrictions, by sentence
The element that "including a ..." limits, it is not excluded that also deposit in the process, method, article or apparatus that includes the element
In other identical element.For the ordinary skill in the art, above-mentioned term can be understood in this reality with concrete condition
With the concrete meaning in novel.
With reference to the accompanying drawing, it elaborates to some embodiments of the utility model.In the absence of conflict, under
The feature in embodiment and embodiment stated 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 the utility model embodiment, microprocessor 110 is electrically connected with signal processing module 120, described for controlling
Signal processing module 120 generates driving signal.Driving signal can be voltage or current.Microprocessor 110 can pass through hair
Control instruction is sent to generate driving signal to signal processing module 120 to control signal processing module 120.
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, signal processing module 120 and microprocessor 110, signal input in the utility model embodiment
End 130 is electrically connected, and for whether fusing to obtain testing result according to driving signal detection protective tube 200, and will test result
It is sent to microprocessor 110.Signal processing module 120 includes driving circuit 121 and comparator 122, and driving circuit 121 is compared with
Device 122 is electrically connected, and driving circuit 121, comparator 122 are electrically connected with microprocessor 110, driving circuit 121, comparator 122
It is electrically connected with signal input part 130.
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 the utility model embodiment, signal input part 130 and the driving circuit 121 of signal processing module 120, compared with
The protective tube 200 of device 122 and multimeter 10 is electrically connected, for generating feedback when driving circuit 121 sends driving signal
Signal is simultaneously sent to comparator 122.The signal input part 130 is set to the COM input terminal 300 of the multimeter 10.It is optional
Ground, signal input part 130 can be electrically connected with the both ends of protective tube 200.The drive of the reception driving circuit 121 of signal input part 130
Dynamic signal and one end that the driving signal is sent to the protective tube 200, one end of driving signal from protective tube 200 are defeated
Enter, the signal exported from the other end of protective tube 200 is then feedback signal, and signal input part 130 sends the feedback signal
To comparator 122.
In the utility model embodiment, alarm module 140 is electrically connected with microprocessor 110, for working as microprocessor 110
When the testing result received is that protective tube 200 fuses, alarm under the control of the micro-controller.Alarm module 140 can be with
Including 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, are also possible to integrate the combined aural and visual alarm of buzzer and alarm lamp, can also be vibrator and alarm lamp
Deng.Optionally, alarm module 140 can select display screen and buzzer, and display screen and buzzer are electrically connected with microprocessor 110
It connects, when the testing result that microprocessor 110 receives is that protective tube 200 fuses, microprocessor 110 is also used to control display screen
With buzzer open, at this point, display screen can show symbol "！", buzzer issues " having electric danger, please replace protective tube in time "
Secure voice prompt, to prompt the protective tube 200 of user's multimeter 10 to fuse, user is prevented not know protective tube
200 fuse and continue to use the multimeter 10 and carry out the case where electric measurement is easy to happen safety accident.
In the other embodiments of the utility model, alarm module 140 can select vibrator and alarm lamp.Vibrator and
Alarm lamp is electrically connected with microprocessor 110, micro- when the testing result that microprocessor 110 receives is that protective tube 200 fuses
Processor 110 controls vibrator and opens, and alarm lamp is bright, and vibrator issues the vibration of high frequency a little, can generate the sense of similar electric shock
Feel, tactile alert is carried out to the user for the multimeter 10 for continuing to use the fusing of protective tube 200, alarm lamp is bright to regard user
Feel and remind, by visual alerts and tactile alert, user can more be made to receive the prompt that 10 protective tube 200 of multimeter has fused
Information.
In the utility model embodiment, power module 150 and microprocessor 110, signal processing module 120 and alarm
Module 140 is electrically connected, and power module 150 is used to provide to microprocessor 110, signal processing module 120 and alarm module 140
Power 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 by the embodiment of the utility model: microprocessor 110 sends control and refers to
Enabling the driving circuit 121 to signal processing module 120, driving circuit 121 will be described so that driving circuit 121 generates driving signal
Driving signal is sent to signal input part 130 and comparator 122, and driving signal generates feedback signal simultaneously through signal input part 130
It is sent to comparator 122, the driving signal of comparator 122 and feedback signal obtain testing result, and microprocessor 110 is also
For when testing result is that protective tube 200 fuses, control alarm module 140 to be alarmed.
Second embodiment
Multimeter 10 provided by the utility model embodiment, basic structure and principle and the technical effect and of generation
One embodiment is identical, and 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 utility model embodiment provides a kind of automatic alarm device and multimeter, automatic alarm device packet
The signal input part being sequentially connected electrically, signal processing module, microprocessor and warning circuit are included, microprocessor sends control instruction
So that driving circuit generates driving signal, the driving signal is sent to driving circuit to signal processing module by driving circuit
Signal input part and comparator, driving signal generate feedback signal through signal input part and are sent to comparator, and comparator compares
The driving signal and feedback signal obtain testing result, and microprocessor is also used to the control when testing result is protective tube fusing
Alarm module alarm processed.The utility model may be implemented to detect the protective tube inside multimeter, when detecting protective tube
It when fusing, alarms, with the timely user reminded using multimeter, user is prevented not know protective tube fusing and continue to make
The case where electric measurement is easy to happen safety accident is carried out with the multimeter.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
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 |
|---|---|---|---|
| CN201821362216.2U CN208780746U (en) | 2018-08-22 | 2018-08-22 | Automatic alarm device and multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821362216.2U CN208780746U (en) | 2018-08-22 | 2018-08-22 | Automatic alarm device and multimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208780746U true CN208780746U (en) | 2019-04-23 |
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ID=66158037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821362216.2U Active CN208780746U (en) | 2018-08-22 | 2018-08-22 | Automatic alarm device and multimeter |
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| Country | Link |
|---|---|
| CN (1) | CN208780746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828285A (en) * | 2018-08-22 | 2018-11-16 | 深圳市迈斯泰克电子有限公司 | Automatic alarm device and multimeter |
-
2018
- 2018-08-22 CN CN201821362216.2U patent/CN208780746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828285A (en) * | 2018-08-22 | 2018-11-16 | 深圳市迈斯泰克电子有限公司 | Automatic alarm device and multimeter |
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