CN2884210Y - Mobile communication terminal able to test electric current and voltage - Google Patents
Mobile communication terminal able to test electric current and voltage Download PDFInfo
- Publication number
- CN2884210Y CN2884210Y CN 200520136540 CN200520136540U CN2884210Y CN 2884210 Y CN2884210 Y CN 2884210Y CN 200520136540 CN200520136540 CN 200520136540 CN 200520136540 U CN200520136540 U CN 200520136540U CN 2884210 Y CN2884210 Y CN 2884210Y
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- electric current
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Abstract
The utility model relates to a mobile communication terminal which can detect current and voltage, comprising a modulus converter, an MCU, a keyboard, a display screen, a power supply as well as two meter pens and a detection circuit. The meter pens are connected with the detection circuit by the interface on the housing of the mobile communication terminal. The detection circuit is arranged in the mobile communication terminal and is connected with the input terminal of the modulus converter of the mobile communication terminal. The mobile communication terminal integrates the functions of current detection and voltage detection, therefore the utility model has the advantages of complete function, convenient portability and simple operation, facilitating the data detection and timely treatment under emergent circumstance such as damage to appliance.
Description
Technical field
The utility model relates to a kind of mobile communication terminal, particularly relates to a kind of mobile communication terminal that can detect electric current and voltage.
Background technology
People's life is now surrounded by numerous electrical equipment, and electrical equipment to break down be the thing that often occurs.A lot of users can at first do it yourself simply to overhaul.For some glitch, through user's oneself investigation, perhaps just can settle a dispute by the parties concerned themselves, the time of repairing of sending has normally been saved in the timely recovery of electrical equipment, has also made things convenient for user's daily life.Therefore, for frequent use small electric apparatus or electrophiles, it is very necessary having maintenance testing tool commonly used at one's side.
Multimeter is the Common Instrument in the life, also is electrophiles' indispensable instrument.It generally is used to detect voltage, electric current and resistance value, is the significant data source that electrical equipment detects maintenance.Existing multimeter mainly comprises testing circuit, the A/D conversion chip, and MCU, man-machine interface (for example: keyboard, LCD shows), power unit.The bodily form is bigger mostly, carries comparatively inconvenience.Be arranged on the knob on the multimeter panel, also damage easily.
Mobile communication terminal has the characteristic of carrying for the user, and wherein has most critical pieces of multimeter, comprises A/D converter, MCU, man-machine interface (for example: keyboard, LCD shows), power unit.Therefore, as long as in mobile communication terminal, add testing circuit and some other indispensable parts, just can compound mobile communication terminal and the function and the one of multimeter.Changing lessly like this, under the lower situation of cost, just enriching the function of mobile communication terminal, for the user provides convenience.
Summary of the invention
Technical problem underlying to be solved in the utility model is, by original functional module on the mobile communication terminal, increases the function that detects electric current and voltage.
To achieve these goals, the utility model provides a kind of mobile communication terminal that can detect electric current and voltage, comprises analog to digital converter, MCU, and keyboard, display screen, power supply also comprises:
Two test pencils link to each other with testing circuit by the interface on the mobile communication terminal shell;
Testing circuit places mobile communication terminal inside, links to each other with the analog to digital converter input end of mobile communication terminal.
Described interface has three, is respectively electric current input interface, voltage input interface, common port interface.
The described mobile communication terminal that can detect electric current and voltage, detection be DC voltage or DC current.
Described testing circuit is connected with a current-limiting resistance between voltage input interface and analog to digital converter input end; This testing circuit is connected with a divider resistance between electric current input interface and common port interface.
The described mobile communication terminal that can detect electric current and voltage also comprises: a divider resistance one end is connected between current-limiting resistance and the analog to digital converter input end, other end ground connection.
Be connected with holding circuit between described voltage input interface and the common port interface.
What described holding circuit was an electric capacity with a voltage stabilizing diode is in parallel.
Be connected with holding circuit between described electric current input interface and the common port interface.
Described holding circuit is for to be connected with a voltage stabilizing diode between electric current input interface and common port interface.
Described electric current input interface place is provided with a fuse.
Advantage of the present utility model is, has increased the function that detects electric current and voltage on mobile communication terminal, has expanded the function of mobile communication terminal, easy to carry, simple to operate, be convenient to the user when emergency situations such as reply electrical equipment damage, detect data, in time handle.
Description of drawings
Fig. 1 is an outside drawing of the present utility model.
Fig. 2 is a structured flowchart of the present utility model.
Fig. 3 is the schematic diagram of testing circuit of the present utility model.
Fig. 4 is the schematic diagram of testing circuit of the present utility model.
Wherein, Reference numeral:
101,102 test pencils, 103 electric current input interfaces
104 voltage input interfaces, 105 test common ports (COM end)
The input port of 200 testing circuits, 201 analog to digital converters
202 dsp chips, 203 LCD
204 keyboards, 103 ' electric current input interface
The input of 104 ' voltage connects 301,302 analog to digital converter interfaces
Fuse insurance 105 ' COM end
Embodiment
The utility model is to be used to the voltage or the electric current that make things convenient for the user to detect some devices commonly used, avoids when electrical equipment breaks down or is badly in need of obtaining this voltage, current value, because never carry the inconvenience that multimeter causes.
Since the critical piece of multimeter be testing circuit, analog to digital converter (ADC), MCU, man-machine interface (for example: keyboard, LCD display), power unit, and comprised all the other whole critical pieces except that testing circuit in the mobile phone, therefore only need in mobile phone, increase the function that this testing circuit and related components can realize a midget tester.
A kind of mobile communication terminal that can detect electric current and voltage of the present utility model has two test pencils 101,102, as shown in Figure 1.Test pencil has long electric wire, and the end of electric wire is provided with coupling arrangement, can insert in the interface of mobile phone side casings.This interface has three, is respectively electric current input interface 103, voltage input interface 104, test common port (COM end) 105.This voltage input interface 104 is the input interface of positive polarity.
The inner structure synoptic diagram of mobile communication terminal of the present utility model sees also Fig. 2.Testing circuit 200 directly links to each other with electric current input interface, voltage input interface, test common port (COM end) interface of mobile communication terminal, to receive voltage or the electric current from determinand.And this testing circuit 200 links to each other with the input port 201 of this analog to digital converter (ADC) simultaneously, and the analog signal conversion that detection is obtained is a digital signal.Thereafter, this digital signal is sent into DSP (Digital signal processing) chip 202, the processing of carrying out digital signal also finally shows final computational data by LCD203.And the user controls this dsp chip 202 by the operation to keyboard 204, thereby selects this function of multimeter of control.
The physical circuit figure of this testing circuit 200 sees also Fig. 3.As shown in the figure, this principle is consistent with common multimeter.Select the circuit between this voltage input interface 104 ' and the COM end when being used to measure voltage signal between the test pencil for use, that is: COM holds ground connection, be connected a resistance R 1 between voltage input interface 104 ' and the analog to digital converter interface 301, this resistance R 1 has played the effect of current limliting, make the voltage to be measured that in test pencil, transmits through this resistance, change a less voltage signal into and enter the ADC input end, the analog to digital converter by mobile phone inside carries out the A/D conversion, imports dsp chip into.Through the calculating of DSP, the magnitude of voltage between voltage input end and the COM end test pencil is presented on the LCD the most at last.Simultaneously, because the ADC input has certain voltage range, so the circuit that needs protection.D1 is a voltage stabilizing diode, and it is connected between voltage input interface end and the COM end with after an electric capacity is in parallel, can play and clamp down on voltage, the effect of holding circuit.
Select the circuit between this electric current input interface and the COM end when being used to measure current signal between the test pencil for use, that is: between electric current input interface 103 ' and COM end, be connected a resistance R 2, this resistance R 2 can play the effect of dividing potential drop, make the electric current to be measured in test pencil, transmit be converted to the ADC input end of input handset behind the voltage through this resistance R 2, analog to digital converter by mobile phone inside carries out the A/D conversion, and imports dsp chip into.Through the calculating of DSP, the current value between current input terminal and the COM end test pencil is presented on the LCD the most at last.Simultaneously, because the ADC input has voltage range, so the circuit that needs protection.D2 is a voltage stabilizing diode, is connected between electric current input interface 103 ' and the COM end, can play the effect of clamping down on voltage protection circuit.And at electric current input interface place, also be provided with a fuse Fuse, excessive with the electric current to be measured that prevents to import, burn circuit.
In another embodiment of the present invention, see also Fig. 4, a resistance R 3 one ends are connected between resistance R 1 and the ADC input end and other end ground connection, and the remainder of circuit is identical with Fig. 3, and principle is also identical with a last embodiment.In the present embodiment, voltage signal to be measured imports this testing circuit 200 into through voltage input interface 104 ', after R1, R3 dividing potential drop, and the ADC input end of a small voltage signal input handset, analog to digital converter by mobile phone inside carries out the A/D conversion, and imports dsp chip into.After dsp chip calculates, be shown on the LCD.By adjusting the resistance of R1, R3, promptly can change the range of voltage measurement.
The user as desiring the measuring voltage value, then inserts two test pencils respectively voltage input end and COM end in use, starts the function of this detection magnitude of voltage by cell phone keyboard, and with these article to be measured of test pencil detection, can see this magnitude of voltage on mobile phone screen.Measure current value as desire, then two test pencils are inserted current input terminal and COM end respectively, start the function of this detection current value by cell phone keyboard, test pencil is connected in the circuit under test, then electric current to be measured can be introduced in the testing circuit, and then by A/D conversion and calculating, this current value to be measured is presented on the LCD the most at last.
The utility model can make things convenient for the user to detect the DC voltage or the electric current of some devices commonly used, for example: voltage of electronic product, dry cell commonly used, alkaline battery or the like.And the back side or side at the shell of mobile communication terminal, a slot also can be set, make this two test pencil easily to insert wherein, also can design a groove that is suitable for placing the long line of test pencil simultaneously, long line is made proper arrangements, and being unlikely to hang down not only influences attractive in appearance but also carry inconvenience.Therefore, utilize mobile communication terminal of the present utility model, realized the function of this midget tester easily.
Though the utility model with aforesaid preferred forms openly as above, is not in order to limit the utility model.Any those of ordinary skill in the art is under the situation of scope and spirit of the present utility model, and change of being made and modification all belong to scope of patent protection of the present utility model.Please refer to appending claims about the protection domain that the utility model defined.
Claims (10)
1, a kind of mobile communication terminal that can detect electric current and voltage comprises analog to digital converter, MCU, and keyboard, display screen, power supply is characterized in that, also comprises:
Two test pencils can link to each other with testing circuit by the interface on the mobile communication terminal shell;
Testing circuit places mobile communication terminal inside, links to each other with the analog to digital converter input end of mobile communication terminal.
2, the mobile communication terminal that can detect electric current and voltage as claimed in claim 1 is characterized in that, this interface has three, is respectively electric current input interface, voltage input interface, common port interface.
3, the mobile communication terminal that can detect electric current and voltage as claimed in claim 1 is characterized in that, what this mobile communication terminal detected is DC voltage or DC current.
4, the mobile communication terminal that can detect electric current and voltage as claimed in claim 1 is characterized in that, this testing circuit is connected with a current-limiting resistance between voltage input interface and analog to digital converter input end;
This testing circuit is connected with a divider resistance between electric current input interface and common port interface.
5, the mobile communication terminal that can detect electric current and voltage as claimed in claim 4 is characterized in that, also comprises: a divider resistance one end is connected between current-limiting resistance and the analog to digital converter input end, other end ground connection.
6, as claim 4 or the 5 described mobile communication terminals that can detect electric current and voltage, it is characterized in that, be connected with holding circuit between voltage input interface and the common port interface.
7, the mobile communication terminal that can detect electric current and voltage as claimed in claim 6 is characterized in that, what this holding circuit was an electric capacity with a voltage stabilizing diode is in parallel.
8, as claim 4 or the 5 described mobile communication terminals that can detect electric current and voltage, it is characterized in that, be connected with holding circuit between electric current input interface and the common port interface.
9, the mobile communication terminal that can detect electric current and voltage as claimed in claim 8 is characterized in that, this holding circuit is for to be connected with a voltage stabilizing diode between electric current input interface and common port interface.
10, the mobile communication terminal that can detect electric current and voltage as claimed in claim 8 is characterized in that, this electric current input interface place is provided with a fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520136540 CN2884210Y (en) | 2005-12-19 | 2005-12-19 | Mobile communication terminal able to test electric current and voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520136540 CN2884210Y (en) | 2005-12-19 | 2005-12-19 | Mobile communication terminal able to test electric current and voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2884210Y true CN2884210Y (en) | 2007-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520136540 Expired - Fee Related CN2884210Y (en) | 2005-12-19 | 2005-12-19 | Mobile communication terminal able to test electric current and voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2884210Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852615A (en) * | 2012-11-30 | 2014-06-11 | 国基电子（上海）有限公司 | Portable mobile terminal and method for measuring current of external-connection device |
| CN104375094A (en) * | 2014-11-21 | 2015-02-25 | 厦门美图移动科技有限公司 | Mobile terminal with electric measurement function |
| CN105137252A (en) * | 2015-10-12 | 2015-12-09 | 上海创功通讯技术有限公司 | Measuring device, measuring accessories and measuring method |
-
2005
- 2005-12-19 CN CN 200520136540 patent/CN2884210Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852615A (en) * | 2012-11-30 | 2014-06-11 | 国基电子（上海）有限公司 | Portable mobile terminal and method for measuring current of external-connection device |
| CN104375094A (en) * | 2014-11-21 | 2015-02-25 | 厦门美图移动科技有限公司 | Mobile terminal with electric measurement function |
| CN105137252A (en) * | 2015-10-12 | 2015-12-09 | 上海创功通讯技术有限公司 | Measuring device, measuring accessories and measuring method |
| CN105137252B (en) * | 2015-10-12 | 2018-09-07 | 上海创功通讯技术有限公司 | Measuring device measures accessory and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |