CN207007914U - A kind of digital multimeter with assistant voice prompt facility - Google Patents

Abstract

The utility model instrument belongs to electronic measuring instrument tool-class field, in particular to a kind of digital multimeter with assistant voice prompt facility.The single-chip microcomputer with LCD display module and voice module, the single-chip microcomputer and the function key contact portion that integrated chip is measured in former universal meter, voice module connection loudspeaker, LCD display module connection display screen are provided with the table of this universal meter.Universal meter described in the utility model is when entering corresponding function option window, loudspeaker can send the use voice of corresponding gear skill, also the word using skill of corresponding gear can be shown on display screen, is effectively improved the service efficiency of universal meter, while prevents maloperation.

Description

A kind of digital multimeter with assistant voice prompt facility

Technical field

The utility model instrument belongs to electronic measuring instrument tool-class field, in particular to a kind of band assistant voice The digital multimeter of prompt facility.

Background technology

Universal meter is also known as multi-meter, multimeter, avometer, numerous table etc., is that the departments such as power electronics are indispensable Measuring instrumentss, typically to measure voltage, electric current and resistance as main purpose.Universal meter by display mode be divided into pointer multimeter and Digital multimeter.It is a kind of multi-functional, multiple range measuring instrumentss, the measurable DC current of general universal meter, DC voltage, friendship Electric current, alternating voltage, resistance etc. are flowed, what is had can also survey some parameters of capacitance, inductance value and semiconductor（Such as β）Deng.Number Word universal meter is a kind of digital instrument the most frequently used at present.It is mainly characterized by degree of accuracy height, resolution ratio is strong, test function is complete It is kind, measuring speed is fast, intuitive display, filter capacity are strong, power consumptive province, be easy to carry.Since the 90's, digital multimeter China obtain popularize with widely using rapidly, it has also become hyundai electronicses measurement and maintenance work indispensable instrument, and by Step substitutes traditional analog（It is i.e. pointer）Universal meter.The measurement process of digital multimeter is turned tested value by change-over circuit Change d. c. voltage signal into, then voltage analog is converted into digital quantity by analog (A/D) converter, then pass through electrometer Rolling counters forward, finally measurement result is directly displayed on display screen with numeral.The fully skilled application method for grasping universal meter It is one of most basic technical ability of electronic technology related personnel.Universal meter use is a lot of and powerful, but for most of electricity For sub- technology related personnel, the use of digital multimeter, which is only capable of reaching, meets fundamental measurement, can not be in a short time to ten thousand Used with table left-hand seat, unlikely carry out corresponding using skill application, or need to remember by itself during application related art The correlation experience recalled is carried out, and the risk of carelessness is present and is required very high to user.Simultaneously many personnel are using one section After can be said to be for being applied to after time is skilled, but a period of time does not touch, the use to it generates many carelessness again.And i.e. Make veteran related personnel, as carelessness produces maloperation, cause apparatus overload, cause to damage, or even produce phase Answer security risk.

Utility model content

The purpose of this utility model is to provide a kind of digital multimeter with assistant voice prompt facility, into phase When answering function choosing-item window, loudspeaker can send the voice that uses of corresponding gear skill, and corresponding gear can be also shown on display screen Word using skill, be effectively improved the service efficiency of universal meter, while prevent maloperation.

The utility model is to take following technical scheme to realize：Band LCD display module and language are provided with table The single-chip microcomputer of sound module, the single-chip microcomputer and the function key contact portion that integrated chip is measured in former universal meter, voice module connection Loudspeaker, LCD display module connection display screen.

The single-chip microcomputer is connected with USB interface, connectable to computer or other input equipments, so as to will constantly record Voice document and text file the input storage of the using skill of digital multimeter are into single-chip microcomputer.

By corresponding FUNC buttons on the universal meter, entered function option window, shown by ↑ ↓ button in universal meter Corresponding shift function is selected on screen, OK button is clicked on and enters corresponding function, after selection enters corresponding function, loudspeaker function module The use voice of corresponding gear skill occurs, while the use word of corresponding gear skill also occurs in display screen.Press BACK buttons Upper level is returned, initial stage is returned after long-press BACK, recovers normal digital table function.It is effectively improved the use effect of universal meter Rate, while prevent maloperation.

The advantages of the utility model is：Structure is reliable, stable performance, using function select button and window, has word The functions such as display, voice broadcast, greatly improve effective service efficiency and reduce using threshold, while effectively prevent from grasping by mistake Make, prevent security risk.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is electrical schematic diagram of the present utility model.

In figure：1st, reset button 2, pincerlike mouth 3, exchange maximum/minimum value button 4, LCD display 5, display screen light Button 6, ac/dc select button 7, hold button 8, on select button 9, ACK button 10, function return push-button 11, function to press Button 12, lower select button 13, USB 14, loudspeaker 15, gears regulating switch 16, battery module 17, COM test pencils socket 18, V Ω test pencils socket 19.

Embodiment

With reference to each figure, added in existing digimer and be provided with the list with LCD display module and voice module Piece machine, the single-chip microcomputer are connected with measuring the corresponding function key contact of integrated chip in universal meter, the voice module connection of single-chip microcomputer Loudspeaker 15, the LCD display module connection LCD display 5 of single-chip microcomputer.The single-chip microcomputer is connected with USB 14, can basis Needs in use, the voice document of the using skill of more universal meters and text file input storage are constantly arrived into monolithic In machine, universal meter is set to become more and more easy to use.

During the use of universal meter, according to the function of accordingly wanting to use, the gears regulating switch of electric parameter 16 get to relevant position from OFF, and black table penholder is entered into COM test pencils socket 18, and red test pencil is inserted into V Ω test pencils socket 19, Press function button 12（FUNC）Entered function menu, by ↑ above select button 9, ↓ under select button 13 to be shown in the LCD of universal meter Corresponding function is selected on screen 5, OK ACK buttons 10 is clicked on and enters, the selectable functions of LCD display 5 are divided into, and resistance grade uses Skill function, be divided into 1., 2., 3. ... bar, as 1. skill judges capacitor quality using digital multimeter ohms range：By universal meter Electric parameter gears regulating switch 16 gets to Ω shelves from OFF, and red, black meter pen connects the positive and negative electrode of capacitor respectively（Before each use Need to be by capacitor discharge）, capacitor quality is judged by the numeral shown on display screen 5, if the moment of display screen 5 display numeral Slowly it is changed into 0 again, in general capacitor is good；If showing numeral, numeral will not back to zero then capacitor is hit Wear；If numeral, but numeral slowly reduces and is not attributed to 0, then leaky condenser.

Voltage gear using skill function, be divided into 1., 2., 3. ... bar, such as skill, 1. universal meter ingeniously makees test electroprobe：By ten thousand V gears are got to from OFF with table electric parameter gears regulating switch 16, ac/dc select button 7 is pressed, confirms selection AC（Hand over Stream）Function, black meter pen is hanging, and hand-held red test pencil is in contact with institute's dypass line or device, and at this moment universal meter has display, if aobvious Registration word is lied prostrate between more than ten volts several（Different universal meters has different displays）, show that the circuit or device are powered, such as Fruit is shown as zero or very little, shows that the circuit or device are not charged.

Current gear using skill function, be divided into 1., 2., 3. ... bar；As 1. skill surveys alternating current：, will when measuring electric current Universal meter electric parameter gears regulating switch 16 gets to A shelves from OFF, presses ac/dc select button 7, confirms selection AC（Hand over Stream）Function, load current size is estimated, select suitable range, pressed electromagnetic induction pincer block and use spanner 1, open pincerlike pincers Mouthfuls 3, between tested current carrying conductor is placed in one, when have in tested wire alternating current by when, the magnetic flux of alternating current is mutual Electric current is induced in sensor vice-side winding.

Other using skill functions and points for attention function.Before 1. measuring every time, measure the item should be checked again And whether amount limit switch is dialled to position, input jack（Or special socket）Whether select pair.

After selection enters above-mentioned corresponding function, the voice module of single-chip microcomputer institute band is triggered startups, drive loudspeaker 15 Corresponding gear skill occurs uses voice, while LCD display module is also triggered startups, and drive LCD display 5 shows phase That answers gear skill uses word.Convenient use personnel, universal meter is used in Kan Bianting, improve utilization rate and accuracy.Make Previous menu is returned by function return push-button 11 after, after pressing twice, returns to normal display screen, speech play is not stopped Only, then by entering corresponding function after OK button, while stop a upper speech play, play voice.Long-press function return push-button After 11 buttons 3 seconds, all stoppings play voice in the case of which kind of, while return to normal digital display screen.Greatly improve Effective service efficiency and reduce using threshold, while effectively prevent maloperation, prevent security risk.

Claims (2)

1. a kind of digital multimeter with assistant voice prompt facility, it is characterized in that：Be provided with table band LCD display module and The single-chip microcomputer of voice module, the single-chip microcomputer and the function key contact portion that integrated chip is measured in former universal meter, voice module connect Connect loudspeaker, LCD display module connection display screen.

2. the digital multimeter with assistant voice prompt facility as described in claim 1, it is characterized in that：The single-chip microcomputer connection There is USB interface.