CN204206279U - A kind of standby power consumption of mobile phone test circuit - Google Patents
A kind of standby power consumption of mobile phone test circuit Download PDFInfo
- Publication number
- CN204206279U CN204206279U CN201420702751.3U CN201420702751U CN204206279U CN 204206279 U CN204206279 U CN 204206279U CN 201420702751 U CN201420702751 U CN 201420702751U CN 204206279 U CN204206279 U CN 204206279U
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- pressure reduction
- amplifying circuit
- chip microcomputer
- power consumption
- handset
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Abstract
The utility model discloses a kind of standby power consumption of mobile phone test circuit, comprise single-chip microcomputer, test supply module and pressure reduction amplifying circuit; The test voltage output end OUT of supply module is connected with the positive pole VDD of tested battery base of handset, and the negative pole of tested battery base of handset is connected to the ground by pressure reduction sampling resistor RC and connects; The negative pole COM of tested battery base of handset is also connected to the ground by the first filter capacitor C1 and connects; The negative pole COM of tested battery base of handset is connected with the input of pressure reduction amplifying circuit; The output of pressure reduction amplifying circuit is connected with the input port of single-chip microcomputer; Described single-chip microcomputer is connected with computer by serial ports.It is low that the utility model has design cost, measures range ability suitable, can adapt to the advantage of test in enormous quantities.
Description
Technical field
The utility model relates to a kind of standby power consumption of mobile phone test circuit, and specifically a kind of standby power consumption of mobile phone test circuit being applicable to old man's hand set, belongs to tester design field.
Background technology
Electric appliance standby measurement of power loss mainly contains two types, and the first is for electric system, asks electrical power consumed according to electric current, voltage, and current the type is more; The second way is according to the energy in test fluid band walking system, and when system temperature reaches balance point, the energy taken away in the unit interval is just the power consumption that system is current, and the current second way is used less.
For mobile phone, particularly older mobile phone also must carry out the test of stand-by power consumption expense before dispatching from the factory, but standby power consumption of mobile phone testing equipment application special on the market is at present also not extensive, even if there is a small amount of product, often expensive; And general electric appliance standby power consumption power measuring is also difficult to adapt to standby power consumption of mobile phone test, the power consumption of electrical appliances tester testing current range that part is general does not on the one hand reach mobile telephone power consumption testing requirement, standby power consumption of mobile phone is generally 0.8mA-1.2mA, this is very little scope for the general power consumption of electrical appliances tester testing current range of part, and the minimum testing power consumption of partial test instrument is about 2mA; General mobile telephone power consumption testing equipment test result can only be presented on panel meter on the other hand, and for test in enormous quantities, this is obviously unfavorable for surveying record and data analysis.
In a word, lack a kind of design cost in prior art low, the mobile phone dedicated stand-by power consumption testing equipment of test in enormous quantities can be adapted to again.
Utility model content
For prior art above shortcomings, the purpose of this utility model is: how to provide a kind of design cost low, can adapt to again the mobile phone dedicated stand-by power consumption test circuit of test in enormous quantities.
To achieve these goals, the utility model have employed following technical scheme.
A kind of standby power consumption of mobile phone test circuit, is characterized in that, comprises single-chip microcomputer, test supply module and pressure reduction amplifying circuit;
The test voltage output end OUT of supply module is connected with the positive pole VDD of tested battery base of handset, and the negative pole of tested battery base of handset is connected to the ground by pressure reduction sampling resistor RC and connects; The negative pole COM of tested battery base of handset is also connected to the ground by the first filter capacitor C1 and connects; The negative pole COM of tested battery base of handset is connected with the input of pressure reduction amplifying circuit; The output of pressure reduction amplifying circuit is connected with the input port of single-chip microcomputer;
Described single-chip microcomputer is connected with computer by serial ports.
Further, described pressure reduction amplifying circuit can be made up of two-stage amplifying circuit, and every grade of amplifying circuit multiplication factor is 11 times.
Further, described pressure reduction sampling resistor RC is also in parallel with sampling shunt resistance RC1, and the resistance of described pressure reduction sampling resistor RC and sampling shunt resistance RC1 is 0.39 Ω.
Further, numerical control simulant electronic switch is also provided with between the output of pressure reduction amplifying circuit and the input port of single-chip microcomputer, the output of pressure reduction amplifying circuit is connected with an I/O channel of numerical control simulant electronic switch, be connected with the common port of numerical control analog switch with the input port of single-chip microcomputer, the numerical control gating end of numerical control analog switch is connected with the output of single-chip microcomputer.
Compared to existing technology, the utility model tool has the following advantages:
Pressure reduction sampling resistor RC to be connected in the working current loop of mobile phone thus to collect small electric pressure reduction by the utility model, stand-by operation power consumption can be obtained for single-chip microcomputer process after this small electric pressure reduction amplifies, single-chip microcomputer by final measurement by Serial Port Transmission to computer shows, owing to being the every components and parts electrical quantity of the measuring circuit (resistance of pressure reduction sampling resistor RC for special measuring object designs, pressure reduction amplifying circuit multiplication factor) can select to adapt to particular measurement scope specially, therefore the middle minimum testing power consumption of part is the general electronic corporation power consumption tester of about 2mA compared to existing technology, the utility model has measures range ability suitably and the simple advantage of circuit structure, compared to existing technology, common mobile telephone power consumption testing equipment test result can only be presented at the situation on panel meter, and the utility model has the flexible convenient test of display and do not increase the advantage of design cost.To have design cost low for the utility model in a word, measures range ability suitable, can adapt to the advantage of testing in enormous quantities.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of standby power consumption of mobile phone test circuit, is characterized in that, comprises single-chip microcomputer 1, test supply module 2 and pressure reduction amplifying circuit 3;
The test voltage output end OUT of supply module 2 is connected with the positive pole VDD of tested battery base of handset, and the negative pole of tested battery base of handset is connected to the ground by pressure reduction sampling resistor RC and connects; The negative pole COM of tested battery base of handset is also connected to the ground by the first filter capacitor C1 and connects; The negative pole COM of tested battery base of handset is connected with the input of pressure reduction amplifying circuit 3; The output of pressure reduction amplifying circuit 3 is connected with the input port of single-chip microcomputer 1;
Wherein, testing supply module 2 can adopt MIC39102 chip to coordinate respective peripheral circuit to form.
Single-chip microcomputer 1 is connected with computer by serial ports.
Pressure reduction amplifying circuit 3 can be made up of two-stage amplifying circuit, and every grade of amplifying circuit multiplication factor is 11 times.Concrete, OP07 chip can be adopted to realize every grade of amplifying circuit, and OP07 chip is the accurate amplifier integrated circuit of high-precision and low-offset voltage.
Pressure reduction sampling resistor RC is also in parallel with sampling shunt resistance RC1, and the resistance of described pressure reduction sampling resistor RC and sampling shunt resistance RC1 is 0.39 Ω.
In order to save the port resource of single-chip microcomputer, numerical control simulant electronic switch is also provided with between the output of pressure reduction amplifying circuit 3 and the input port of single-chip microcomputer 1, the output of pressure reduction amplifying circuit 3 is connected with an I/O channel of numerical control simulant electronic switch, be connected with the common port of numerical control analog switch with the input port of single-chip microcomputer 1, the numerical control gating end of numerical control analog switch is connected with the output of single-chip microcomputer 1.
Utility model works process is as follows:
Under tested mobile phone is in holding state, test supply module 2 provides testing power supply for the utility model, test voltage is 3.8V, this test voltage loading is powered to tested mobile phone on the positive pole VDD of tested battery base of handset, through flowing into ground by pressure reduction sampling resistor RC after supply current Ic flows through mobile phone circuitry, supply current Ic is also the operating current of cell phone standby work, supply current Ic flows through pressure reduction sampling resistor RC and certainly leads to a small electric pressure reduction, namely this voltage difference is the voltage difference between the negative pole COM of tested battery base of handset and ground, this voltage difference is undertaken amplifying (amplifying 121 times) by the input signal as pressure reduction amplifying circuit 3, pressure difference signal Vc after amplification is admitted in single-chip microcomputer 1, single-chip microcomputer 1 is converted into digital quantity by inner analog-to-digital conversion module, thus calculate the parameters such as supply current Ic (supply current under cell phone standby work) and operating power P (under holding state), concrete Ic=Vc/RC, further, above parameter can be uploaded on computer by the serial ports of single-chip microcomputer 1 and show, thus the measurement and display completed standby power consumption of mobile phone.
In addition, pressure reduction sampling resistor RC is also in parallel with sampling shunt resistance RC1, the resistance of described pressure reduction sampling resistor RC and sampling shunt resistance RC1 is 0.39 Ω, this is to damage pressure reduction sampling resistor RC when preventing cell phone standby operating current in test process from occurring larger current, after sampling shunt resistance RC1 in parallel, the electric current flowing through pressure reduction sampling resistor RC is reduced to former half, pressure reduction sampling resistor RC.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (4)
1. a standby power consumption of mobile phone test circuit, is characterized in that, comprises single-chip microcomputer (1), test supply module (2) and pressure reduction amplifying circuit (3);
The voltage output end OUT of test supply module (2) is connected with the positive pole VDD of tested battery base of handset, and the negative pole of tested battery base of handset is connected to the ground by pressure reduction sampling resistor RC and connects; The negative pole COM of tested battery base of handset is also connected to the ground by the first filter capacitor C1 and connects; The negative pole COM of tested battery base of handset is connected with the input of pressure reduction amplifying circuit (3); The output of pressure reduction amplifying circuit (3) is connected with the input port of single-chip microcomputer (1);
Described single-chip microcomputer (1) is connected with computer by serial ports.
2. a kind of standby power consumption of mobile phone test circuit according to claim 1, it is characterized in that described pressure reduction amplifying circuit (3) can be made up of two-stage amplifying circuit, every grade of amplifying circuit multiplication factor is 11 times.
3. a kind of standby power consumption of mobile phone test circuit according to claim 1, it is characterized in that described pressure reduction sampling resistor RC is also in parallel with sampling shunt resistance RC1, the resistance of described pressure reduction sampling resistor RC and sampling shunt resistance RC1 is 0.39 Ω.
4. a kind of standby power consumption of mobile phone test circuit according to claims 1 or 2, it is characterized in that also being provided with numerical control simulant electronic switch between the output of pressure reduction amplifying circuit (3) and the input port of single-chip microcomputer (1), the output of pressure reduction amplifying circuit (3) is connected with an I/O channel of numerical control simulant electronic switch, be connected with the common port of numerical control analog switch with the input port of single-chip microcomputer (1), the numerical control gating end of numerical control analog switch is connected with the output of single-chip microcomputer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702751.3U CN204206279U (en) | 2014-11-09 | 2014-11-09 | A kind of standby power consumption of mobile phone test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702751.3U CN204206279U (en) | 2014-11-09 | 2014-11-09 | A kind of standby power consumption of mobile phone test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204206279U true CN204206279U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420702751.3U Expired - Fee Related CN204206279U (en) | 2014-11-09 | 2014-11-09 | A kind of standby power consumption of mobile phone test circuit |
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| Country | Link |
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| CN (1) | CN204206279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445540A (en) * | 2015-12-15 | 2016-03-30 | 惠州Tcl移动通信有限公司 | Mobile terminal real-time power consumption testing system, testing device, and testing method |
| CN110470887A (en) * | 2019-09-02 | 2019-11-19 | 珠海格力智能装备有限公司 | Detection device and detection method |
-
2014
- 2014-11-09 CN CN201420702751.3U patent/CN204206279U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445540A (en) * | 2015-12-15 | 2016-03-30 | 惠州Tcl移动通信有限公司 | Mobile terminal real-time power consumption testing system, testing device, and testing method |
| CN110470887A (en) * | 2019-09-02 | 2019-11-19 | 珠海格力智能装备有限公司 | Detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20171109 |