CN103675550B - General automobile radio and tape player performance test load box - Google Patents
General automobile radio and tape player performance test load box Download PDFInfo
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- CN103675550B CN103675550B CN201310700826.4A CN201310700826A CN103675550B CN 103675550 B CN103675550 B CN 103675550B CN 201310700826 A CN201310700826 A CN 201310700826A CN 103675550 B CN103675550 B CN 103675550B
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Abstract
A kind of general automobile radio and tape player performance test load box, relate to the tested radio and tape player testing equipment of a kind of automobile, comprise power module, load blocks, one-chip computer module, dark current detection module, display module, power module is used to one-chip computer module that power supply is provided, load blocks is used for providing load access, and under the control of one-chip computer module by touch-switch and relay switch load blocks; One-chip computer module, as core component, is responsible for receiving input signal and output control signal; Dark current detection module, under the control signal control in one-chip computer module output, detects the dark current of tested radio and tape player and exports the dark current sampled signal detecting to one-chip computer module; Display module is for showing testing power supply voltage and the tested radio and tape player dark current of one-chip computer module output. The present invention have functional diversities, durable, reliability high, can effectively protect the feature that tested radio and tape player, production efficiency are high, save development cost, be easy to apply.
Description
Technical field
The present invention relates to the tested radio and tape player testing equipment of a kind of automobile, particularly a kind of general automobile radio and tape player performance is surveyedExamination load box.
Background technology
The tested radio and tape player performance test of existing automobile load box generally has the following disadvantages:
1. function singleness, the fictitious load can only serve as tested radio and tape player test time is used; And use mechanical switch as negativeThe selection switching of carrying, the switching of test event, mechanical switch is fragile, easily causes malfunction; 2. test simulation amount needsAdditional instrument could be measured; 3. some circuit protections that there is no need easily cause the damage of tested radio and tape player in the time producing.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of general automobile radio and tape player performance test load box, to separateFunction singleness that certainly prior art exists, easily cause the weak point of malfunction.
The technical scheme solving the problems of the technologies described above is: a kind of general automobile radio and tape player performance test load box, comprisesPower module, load blocks, one-chip computer module, dark current detection module, display module,
Described power module is used to one-chip computer module that power supply is provided, the power end of this power module and one-chip computer moduleConnect;
Described load blocks is used for providing load access, and under the control of one-chip computer module by touch-switch andRelay switch is selected load, switch test project, and this load blocks is connected with the input/output terminal of one-chip computer module;
Described one-chip computer module, as core component, is responsible for receiving input signal and output control signal;
Described dark current detection module, under the control signal control in one-chip computer module output, detects tested folding and unfoldingThe dark current of machine also exports the dark current sampled signal detecting to one-chip computer module; This dark current detection module and single-chip microcomputerThe input/output terminal of module connects;
Described display module is for showing testing power supply voltage and the secretly electricity of tested radio and tape player of one-chip computer module outputStream, this display module is connected with the output of one-chip computer module.
Further technical scheme of the present invention is: described dark current detection module comprise electronic switch, sampling resistor andWave filter, the input of described electronic switch is connected with the output of one-chip computer module, another input of electronic switch also withTested radio and tape player connects, and the output of electronic switch is connected with the input of sampling resistor, the output of sampling resistor and filteringThe input of device connects, and the output of wave filter is connected with the input of one-chip computer module.
Of the present invention again further technical scheme be: this load box also includes overcurrent protection module, at single-chip microcomputerUnder the control signal control of module output, overcurrent, short circuit phenomenon are carried out to overcurrent protection, and overcurrent protection detection signal is exportedTo one-chip computer module; This overcurrent protection module is connected with the input/output terminal of one-chip computer module.
Further technical scheme again of the present invention is: described overcurrent protection module comprises reset circuit, electronic switch, electricityStream sampling resistor and sampling comparison circuit, the input of described reset circuit, electronic switch respectively with the output of one-chip computer moduleThe output of end, power supply connects, and another input of electronic switch is connected with tested radio and tape player, and the output of electronic switch respectivelyBe connected with current sampling resistor, sampling comparison circuit, after the sampling output of comparison circuit and the output of reset circuit are in parallelBe connected with reset circuit, reset circuit is connected with the input of one-chip computer module.
Further technical scheme again of the present invention is: this load box also includes ILL abnormity of power supply detection module, this ILLAbnormity of power supply detection module for detection of vehicle in the time not opening ILL power supply because the fault of radio and tape player cause radio and tape player toOn vehicle, all the other equipment that are connected with ILL power supply provide the situation of power supply; This ILL abnormity of power supply detection module and one-chip computer moduleInput connect.
Further technical scheme again of the present invention is: this load box also includes alarm display module, this alarm indication mouldPiece is connected with the output of one-chip computer module, for carry out audible alarm and screen display under abnormal conditions.
Further technical scheme again of the present invention is: this load box also includes lighting simulation module, for simulated automotiveThe quick break-make of electric control lock, and tested radio and tape player supply voltage falling waveform when automobile starting, this lighting simulation module withThe output of one-chip computer module connects.
Further technical scheme of the present invention is: described lighting simulation module comprises wave filter, adjusts pipe and compareDevice, the input of described wave filter is connected with the output of one-chip computer module, and the output of wave filter is connected with adjustment pipe, adjustsPipe is connected with comparator, and comparator is connected with tested radio and tape player; The control signal of one-chip computer module output is after filter filteringOutput DC signal, exports different voltage to tested radio and tape player through adjustment pipe, comparator.
Owing to adopting said structure, the present invention's general automobile radio and tape player performance test load box has the following beneficial effect that hasReally:
1. functional diversities, durable, reliability is high:
Due to present invention includes power module, load blocks, one-chip computer module, dark current detection module, display module,Overcurrent protection module, ILL abnormity of power supply detection module, alarm display module, lighting simulation module, therefore, the present invention is except doingOutside fictitious load during for tested radio and tape player test is used, also can realize dark current detection, overcurrent protection, the detection of ILL abnormity of power supply, reportThe function of alert demonstration, lighting simulation, its functional diversities. And because the present invention has used one-chip computer module in conjunction with touch-switchAnd relay comes the switching of control load module and the switching of function, be swift in response, can reach not by different programsSame function, operates by touch-switch, durable, and reliability is high.
2. can effectively protect tested radio and tape player:
Owing to having the present invention includes overcurrent protection module, the current sampling resistor sampled signal of this overcurrent protection module is passed throughThe a reference value of sampling comparison circuit and setting compares, if higher than a reference value, outputs signal to immediately electronic switch, cuts off and receivesPut being connected of machine and power supply, one-chip computer module is received the signal of comparison circuit output simultaneously, output alarm signal, thus can be effectiveProtect tested radio and tape player.
3. production efficiency is high:
The overcurrent protection causing because of reasons such as short circuits that the present invention occurs in process of production, and ILL has report extremelyAlert sound and corresponding demonstration, detecting dark current only needs just can complete by a button, and accurately, speed is fast in test.
4. save tooling device development cost:
The present invention in process of production available same load box of different station work completes different Function detection, has avoidedTest simulation amount needs additional instrument to measure, and has also avoided the multiple frocks of need exploitation buying that cause due to function singleness to establishStandby cycle and cost.
In addition, due to this load box also the light a fire supply voltage that causes of simulated automotive reduce waveform, do not need expensive speciallyJust can test this function at production line by testing equipment.
Below, the technology spy of the general automobile radio and tape player performance test load box to the present invention in conjunction with the accompanying drawings and embodimentsLevy and be further described.
Brief description of the drawings
Fig. 1: the functional block diagram of the present invention's general automobile radio and tape player performance test load box,
Fig. 2: the circuit diagram of dark current detection module,
Fig. 3: the circuit diagram of overcurrent protection module,
Fig. 4: the circuit diagram of lighting simulation module.
Detailed description of the invention
Embodiment mono-:
A kind of general automobile radio and tape player performance test load box (functional block diagram is referring to Fig. 1) comprise power module,Load blocks, one-chip computer module, dark current detection module, display module, stream protection module, ILL abnormity of power supply detection module, reportAlert display module, lighting simulation module, wherein:
Described power module is used to one-chip computer module that power supply is provided, the input of this power module and one-chip computer moduleConnect;
Described load blocks comprises high-power wire-wound resistor, for load access is provided, and at one-chip computer moduleUnder control, select load, switch test project, this load blocks and one-chip computer module by touch-switch and relay switchInput/output terminal connects;
Described one-chip computer module, as core component, is responsible for receiving input signal and output control signal;
Described dark current detection module, under the control signal control in one-chip computer module output, detects tested folding and unfoldingThe dark current of machine also exports the dark current sampled signal detecting to one-chip computer module; This dark current detection module and single-chip microcomputerThe input/output terminal of module connects; Described dark current detection module comprises that electronic switch, sampling resistor and wave filter are (as Fig. 2Shown in), the input of described electronic switch is connected with the output of one-chip computer module, another input of electronic switch also with quiltSurvey radio and tape player connects, and the output of electronic switch is connected with the input of sampling resistor, the output of sampling resistor and wave filterInput connect, the output of wave filter is connected with the input of one-chip computer module; When work, electronic switch receives monolithicMachine control signal, the circuit between the tested radio and tape player of conducting and sampling resistor, wave filter is by the dark current sampling letter of sampling resistorAfter number filtering, export one-chip computer module to.
Described display module is for showing testing power supply voltage and the secretly electricity of tested radio and tape player of one-chip computer module outputStream, this display module is connected with the output of one-chip computer module.
Described overcurrent protection module, under the control signal control in one-chip computer module output, enters short circuit phenomenonRow overcurrent protection, and export overcurrent protection detection signal to one-chip computer module; This overcurrent protection module and one-chip computer moduleInput/output terminal connects; This overcurrent protection module comprises reset circuit, electronic switch, current sampling resistor and sampling comparison circuit(as shown in Figure 3), the input of described reset circuit, electronic switch respectively with the output of one-chip computer module, the output of power supplyEnd connect, another input of electronic switch is connected with tested radio and tape player, the output of electronic switch respectively with current sample electricityResistance, sampling comparison circuit connect, and after the sampling output of comparison circuit and the output of reset circuit are in parallel, connect with reset circuitConnect, reset circuit is connected with the input of one-chip computer module, the electric current adjustable extent 0-20 ampere of overcurrent protection, and when work, electricityStream sampling resistor sampled signal compares by a reference value of sampling comparison circuit and setting, if higher than a reference value, defeated immediatelyGo out signal to electronic switch, cut-out radio and tape player is connected with power supply, and one-chip computer module is received the signal of comparison circuit output simultaneously,Output alarm signal.
Described ILL abnormity of power supply detection module, for detection of vehicle in the time not opening ILL power supply, because radio and tape playerFault cause radio and tape player that the situation of power supply is provided to all the other equipment that are connected with ILL power supply on vehicle; This ILL abnormity of power supply inspectionSurveying module is connected with the input of one-chip computer module.
Described alarm display module is connected with the output of one-chip computer module, for carry out sound report under abnormal conditionsPolice and screen display.
Described lighting simulation module, for the quick break-make of simulated automotive electric control lock, and tested when automobile startingRadio and tape player supply voltage falling waveform, this lighting simulation module is connected with the output of one-chip computer module. This lighting simulation moduleComprise wave filter, adjust pipe and comparator (as shown in Figure 4), described wave filter is low pass filter, the input of this wave filterBe connected with the output of one-chip computer module, the output of wave filter is connected with adjustment pipe, adjusts pipe and is connected with comparator, comparatorBe connected with tested radio and tape player; The control signal of one-chip computer module output is exported DC signal after filter filtering, through adjustingPipe, comparator are exported different voltage to tested radio and tape player, thereby realize simulation igniting.
Claims (7)
1. a general automobile radio and tape player performance test load box, is characterized in that: comprise power module, load blocks, listSheet machine module, dark current detection module, display module,
Described power module is used to one-chip computer module that power supply is provided, and the power end of this power module and one-chip computer module connectsConnect;
Described load blocks is used for providing load access, and under the control of one-chip computer module by touch-switch and relayDevice switches selects load, switch test project, and this load blocks is connected with the input/output terminal of one-chip computer module;
Described one-chip computer module, as core component, is responsible for receiving input signal and output control signal;
Described dark current detection module is under the control signal control of one-chip computer module output, detects tested radio and tape playerDark current also exports the dark current sampled signal detecting to one-chip computer module; This dark current detection module and one-chip computer moduleInput/output terminal connect;
Described display module, should for showing testing power supply voltage and the tested radio and tape player dark current of one-chip computer module outputDisplay module is connected with the output of one-chip computer module;
Described dark current detection module comprises electronic switch, sampling resistor and wave filter, the input of described electronic switch withThe output of one-chip computer module connects, and another input of electronic switch is also connected with tested radio and tape player, the output of electronic switchEnd is connected with the input of sampling resistor, and the output of sampling resistor is connected with the input of wave filter, the output of wave filterBe connected with the input of one-chip computer module.
2. general automobile radio and tape player performance test load box according to claim 1, is characterized in that: this load box alsoInclude overcurrent protection module, under the control signal control in one-chip computer module output, overcurrent, short circuit phenomenon were carried outStream protection, and export overcurrent protection detection signal to one-chip computer module; The input of this overcurrent protection module and one-chip computer moduleOutput connects.
3. general automobile radio and tape player performance test load box according to claim 2, is characterized in that: described overcurrentProtection module comprises reset circuit, electronic switch, current sampling resistor and sampling comparison circuit, described reset circuit, electronic cuttingThe input closing is connected with the output of one-chip computer module, the output of power supply respectively, another input and the quilt of electronic switchSurvey radio and tape player connects, and the output of electronic switch is connected with current sampling resistor, sampling comparison circuit respectively, sampling comparison circuitThe output parallel connection of output and reset circuit after be connected with reset circuit, the input of reset circuit and one-chip computer module connectsConnect.
4. general automobile radio and tape player performance test load box according to claim 1, is characterized in that: this load box alsoInclude ILL abnormity of power supply detection module, this ILL abnormity of power supply detection module is not being opened ILL power supply for detection of vehicleTime, because the fault of radio and tape player causes radio and tape player that the situation of power supply is provided to all the other equipment that are connected with ILL power supply on vehicle; ShouldILL abnormity of power supply detection module is connected with the input of one-chip computer module.
5. general automobile radio and tape player performance test load box according to claim 1, is characterized in that: this load box alsoInclude alarm display module, this alarm display module is connected with the output of one-chip computer module, for entering under abnormal conditionsRow audible alarm and screen display.
6. according to the general automobile radio and tape player performance test load box described in the arbitrary claim of claim 1 to 5, its featureBe: this load box also includes lighting simulation module, for the quick break-make of simulated automotive electric control lock, and when automobile startingTested radio and tape player supply voltage falling waveform, this lighting simulation module is connected with the output of one-chip computer module.
7. general automobile radio and tape player performance test load box according to claim 6, is characterized in that: described ignitingAnalog module comprises wave filter, adjusts pipe and comparator, and the input of described wave filter is connected with the output of one-chip computer module,The output of wave filter is connected with adjustment pipe, adjusts pipe and is connected with comparator, and comparator is connected with tested radio and tape player; Single-chip microcomputer mouldThe control signal of piece output is exported DC signal after filter filtering, exports different voltage extremely through adjustment pipe, comparatorTested radio and tape player.
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| CN201310700826.4A CN103675550B (en) | 2013-12-16 | 2013-12-16 | General automobile radio and tape player performance test load box |
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| CN201310700826.4A CN103675550B (en) | 2013-12-16 | 2013-12-16 | General automobile radio and tape player performance test load box |
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| CN103675550A CN103675550A (en) | 2014-03-26 |
| CN103675550B true CN103675550B (en) | 2016-05-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108196145A (en) * | 2017-12-22 | 2018-06-22 | 台州市路桥豪达汽车电器有限公司 | Automobile electric performance test method and system |
| CN109725194A (en) * | 2019-01-23 | 2019-05-07 | 黑龙江省计量检定测试研究院 | Portable car-mounted navigation audio-video system energy consumption testing instrument |
| CN111693814A (en) * | 2020-06-23 | 2020-09-22 | 东风汽车有限公司 | Vehicle-mounted load data acquisition system and data acquisition method |
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| CN2070913U (en) * | 1990-05-29 | 1991-02-06 | 刘晓强 | Tester for electric line leakage of motor driven vehicle |
| CN201553110U (en) * | 2009-09-15 | 2010-08-18 | 广州科元电气设备有限公司 | Automobile circuit hidden danger protector |
| CN102539955A (en) * | 2012-03-22 | 2012-07-04 | 深圳市金凯博自动化测试有限公司 | Automation testing system of vehicle-mounted multimedia |
| CN102866703A (en) * | 2012-09-24 | 2013-01-09 | 山东天海电装有限公司 | Intelligent testing system for controllers of electric vehicles |
| CN103196464A (en) * | 2013-04-17 | 2013-07-10 | 深圳市凌启电子有限公司 | Testing system for vehicle-mounted multimedia terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013012508A1 (en) * | 2011-07-21 | 2013-01-24 | Ut-Battelle, Llc | Wireless power transfer electric vehicle supply equipment installation and validation tool |
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- 2013-12-16 CN CN201310700826.4A patent/CN103675550B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070913U (en) * | 1990-05-29 | 1991-02-06 | 刘晓强 | Tester for electric line leakage of motor driven vehicle |
| CN201553110U (en) * | 2009-09-15 | 2010-08-18 | 广州科元电气设备有限公司 | Automobile circuit hidden danger protector |
| CN102539955A (en) * | 2012-03-22 | 2012-07-04 | 深圳市金凯博自动化测试有限公司 | Automation testing system of vehicle-mounted multimedia |
| CN102866703A (en) * | 2012-09-24 | 2013-01-09 | 山东天海电装有限公司 | Intelligent testing system for controllers of electric vehicles |
| CN103196464A (en) * | 2013-04-17 | 2013-07-10 | 深圳市凌启电子有限公司 | Testing system for vehicle-mounted multimedia terminal |
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