CN201654101U - Low power point detection device of electric toy - Google Patents
Low power point detection device of electric toy Download PDFInfo
- Publication number
- CN201654101U CN201654101U CN2010201505778U CN201020150577U CN201654101U CN 201654101 U CN201654101 U CN 201654101U CN 2010201505778 U CN2010201505778 U CN 2010201505778U CN 201020150577 U CN201020150577 U CN 201020150577U CN 201654101 U CN201654101 U CN 201654101U
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- arm microcontroller
- electronic
- power point
- load device
- electrically connected
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Abstract
The utility model discloses a low power point detection device of an electric toy, which mainly comprises an ARM microcontroller, an electronic loading device, a measuring meter pen, a memory and a displayer. The memory and the displayer are electrically connected with the ARM microcontroller respectively, the ARM microcontroller is connected with the electronic loading device through RS232 serial port wires, the electronic loading device is electrically connected with the measuring meter pen. The utility mode has the advantages that the detection accuracy and the detection efficiency are improved, and the affection caused by temperature is small.
Description
Technical field
The utility model relates to the automatic test platform pick-up unit of multiple electric parameter composite measurements such as a kind of collecting voltage, electric current, power, can determine especially whether tested electronic circuit is low-power circuit.
Background technology
So-called low-power circuit, be that utensil is powered with rated voltage, and a variohm that is tuned to its maximum resistance is connected by between the opposite pole of points for investigation and power supply, reduce resistance value then, power up to this resistor consumption reaches maximal value, when last, the peak power of supplying with this resistor was no more than those points of the most close power supply of 15 watts, is called as low-power point at the 5th second.That a part of circuit far away than low-power point apart from power supply is considered to a low-power circuit.The mode of static load (as resistance, resistance box, rheochord) the energy consumption discharge that domestic general employing at present is traditional determines that rheochord method commonly used is to the measurement of low-power circuit in practical operation.Because its operation is fairly simple, is widely used in quality testing department.But because the selection or the misoperation of resistance may can not find low-power point, in the practical operation, fault often takes place.The detection more complicated of electronic product electric property needs a large amount of subjective judgement of testing staff in the testing process simultaneously, and testing result is subject to artificial interference, and accuracy of experimental results and repdocutbility are difficult to guarantee.The current technical body of carrying out the electronic product safety detection both at home and abroad has a lot, and automatization level is lower, test item is single, electric parameter measurement mostly rests on the stage of adopting the independent measurement of special testing instrument difference but detect.
The prior art weak point is: (1) detection efficiency is low; (2) precision of testing result and repdocutbility are difficult to guarantee; (3) Chang Gui ohmic load (slide rheostat and resistance box) is because its variation of temperature can cause the variation of resistance, and the thermonoise that produces when electric current is very big and self temperature raise suddenly and usually can influence test result, so temperature influence is bigger.
The utility model content
Technical problem to be solved in the utility model provides a kind of electronic game tool low-power point pick-up unit that improves accuracy of detection.
The technical scheme in the invention for solving the technical problem is: this electronic game tool low-power point pick-up unit mainly comprises ARM microcontroller, electronic load device, measures test pencil, storer and display, described storer and display are electrically connected with the ARM microcontroller respectively, described ARM microcontroller is connected by the RS232 Serial Port Line with the electronic load device, and described electronic load device is electrically connected with the measurement test pencil.
Further, the utility model also comprises Switching Power Supply and/or USB interface, and described Switching Power Supply is electrically connected respectively with electronic load device and ARM microcontroller, and described USB interface is electrically connected with the ARM microcontroller.
The beneficial effects of the utility model are: the utility model electronic game tool low-power point pick-up unit is according to the Dai Weinan principle, and by deriving as can be known when electronic load device resistance equals the electronic circuit internal resistance, the power maximum can be measured maximum power value at this moment.The main effect of electronic load device is rheostat of simulation, and rheostatic adjusting need not be cut off the power supply, and therefore improves detection efficiency; And because the electronic load device has overheat protective function, range of temperature is less, testing result precision height; When temperature surpasses certain certain value; the action of electronic load device holding circuit; load current in the automatic cut-off loop, holding circuit is moved once more and is recovered load current in the loop after chilling temperature drops to certain certain value, so the electronic load temperature influence is less.The utility model can be realized determining especially to multiple electric parameters such as the automatic test voltage of electronic game tool, electric current, power whether tested electronic circuit is low-power circuit.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the utility model voltage calibration circuit connection diagram.
Among the figure, 1. Switching Power Supply, 2. the electronic load device is 3. measured test pencil, 4.RS232 Serial Port Line, 5.ARM microcontroller, 6. storer, 7. display, 8.USB interface, 9. voltage source, 10. voltage standard table, 11. electronic game tool low-power point pick-up units.
Embodiment
As shown in Figure 1, the utility model electronic game tool low-power point pick-up unit mainly comprises ARM microcontroller 5, electronic load device 2, measures test pencil 3, storer 6 and display 7.Storer 6 and display 7 are electrically connected with ARM microcontroller 5 respectively, and ARM microcontroller 5 is connected by RS232 Serial Port Line 4 with electronic load device 2, and electronic load device 2 is electrically connected with measurement test pencil 3.Measure the probe of the head of test pencil 3 for conduction.
Wherein, storer 6 can be the storer of NandFlash, SD card or other types.Display 7 can use the display of lcd touch panel type display or other types.ARM microcontroller 5 can use S3C2440 microcontroller or other each serial ARM9 microcontroller of Samsung.Electronic load device 2 can be 3700 series electronic load devices or other electronic load devices of the same type of the sharp company in Asia.
In order to make the utility model more stable work, Switching Power Supply 1 can be electrically connected respectively with electronic load device 2 and ARM microcontroller 5, provide 220 volts of alternating currents and 5 volts of direct currents by Switching Power Supply 1 to electronic load device 2 and ARM microcontroller 5.
In order to make the utility model more convenient to operate, USB interface 8 can be electrically connected with ARM microcontroller 5.By USB interface 8, the data file in the storer 6 can extract from pick-up unit by equipment such as USB flash disks.Can also connect mouse or keyboard by USB interface 8, make things convenient for input operation.
The course of work of the utility model electronic game tool low-power point pick-up unit is as follows:
(1) this is used novel described measurement test pencil 3 be connected on the detected electronic circuit as the input terminal of electronic load device 2;
(2) by the resistance value of ARM microcontroller 5 by RS232 Serial Port Line 4 control electronic load devices 2, electronic load device 2 measures magnitude of voltage, current value and performance number simultaneously, electronic load device 2 returns to ARM microcontroller 5 to the value of measuring by the RS232 Serial Port Line, and is specific as follows:
1) ARM microcontroller 5 obtains the resistance value and the detection time of electronic load device 2;
2) ARM microcontroller 5 enters detected state, the resistance change of control electronic load device 2;
3) electronic load device 2 records magnitude of voltage, current value and the performance number of detected electronic circuit;
4) electronic load device 2 returns to ARM microcontroller 5 with magnitude of voltage, current value and the performance number that records by RS232 Serial Port Line 4.
When (3) the electric power value that records of electronic load device 2 reached maximal value, detection finished.If the electric power value maximal value of measuring is greater than 15 watts, 5 promptings of ARM microcontroller are defective;
(4) display 7 shows testing result, and preserves testing result in storer 6.
As shown in Figure 2, the voltage calibration circuit of the utility model electronic game tool low-power point pick-up unit mainly comprises voltage source 9, voltage standard table 10 and electronic game tool low-power point pick-up unit 11.The positive pole of voltage source 9 is connected with the positive pole of voltage standard table 10 and measurement test pencil 3 positive electrical of electronic game tool low-power point pick-up unit 11 respectively, the negative pole of voltage source 9 is connected with the negative pole of voltage standard table 10 and measurement test pencil 3 negative electricities of electronic game tool low-power point pick-up unit 11 respectively, voltage source 9 can be for being output as the direct voltage source of 0-350 volt, and voltage standard table 10 can be any high-precision voltage table.
The voltage calibration course of work of the utility model electronic game tool low-power point pick-up unit is as follows:
(1) output of voltage source 9 voltages is set to 3.50V, electronic game tool low-power point pick-up unit 11 measures magnitude of voltage, the value of comparison voltage standard table 10 is regulated the relevant voltage of electronic game tool low-power point pick-up unit 11 and is regulated button, is ± 0.02% up to the error of display 7 displayed values;
(2) output of voltage source 9 voltages is set to 35.0V, electronic game tool low-power point pick-up unit 11 measures magnitude of voltage, the value of comparison voltage standard table 10 is regulated the relevant voltage of electronic game tool low-power point pick-up unit 11 and is regulated button, is ± 0.02% up to the error of display 7 displayed values;
(3) output of voltage source 9 voltages is set to 350.0V, electronic game tool low-power point pick-up unit 11 measures magnitude of voltage, the value of comparison voltage standard table 10 is regulated the relevant voltage of electronic game tool low-power point pick-up unit 11 and is regulated button, is ± 0.02% up to the error of display 7 displayed values.
Claims (2)
1. electronic game tool low-power point pick-up unit, it is characterized in that: comprise ARM microcontroller (5), electronic load device (2), measure test pencil (3), storer (6) and display (7), described storer (6) and display (7) are electrically connected with ARM microcontroller (5) respectively, described ARM microcontroller (5) is connected by RS232 Serial Port Line (4) with electronic load device (2), and described electronic load device (2) is electrically connected with measurement test pencil (3).
2. electronic game tool low-power point pick-up unit according to claim 1, it is characterized in that: also comprise Switching Power Supply (1) and/or USB interface (8), described Switching Power Supply (1) is electrically connected respectively with electronic load device (2) and ARM microcontroller (5), and described USB interface (8) is electrically connected with ARM microcontroller (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201505778U CN201654101U (en) | 2010-04-02 | 2010-04-02 | Low power point detection device of electric toy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201505778U CN201654101U (en) | 2010-04-02 | 2010-04-02 | Low power point detection device of electric toy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201654101U true CN201654101U (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201505778U Expired - Fee Related CN201654101U (en) | 2010-04-02 | 2010-04-02 | Low power point detection device of electric toy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201654101U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884960A (en) * | 2020-07-02 | 2022-01-04 | 广州雷迅创新科技股份有限公司 | High-precision calibration method for current measured by shunt method |
-
2010
- 2010-04-02 CN CN2010201505778U patent/CN201654101U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884960A (en) * | 2020-07-02 | 2022-01-04 | 广州雷迅创新科技股份有限公司 | High-precision calibration method for current measured by shunt method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20130402 |