CN202057476U - Linearity testing device - Google Patents
Linearity testing device Download PDFInfo
- Publication number
- CN202057476U CN202057476U CN2011200522662U CN201120052266U CN202057476U CN 202057476 U CN202057476 U CN 202057476U CN 2011200522662 U CN2011200522662 U CN 2011200522662U CN 201120052266 U CN201120052266 U CN 201120052266U CN 202057476 U CN202057476 U CN 202057476U
- Authority
- CN
- China
- Prior art keywords
- linearity
- test
- test platform
- testing device
- comprehensive test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052799 carbon Inorganic materials 0.000 abstract description 17
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Landscapes
- Tests Of Electronic Circuits (AREA)
Abstract
The utility model provides a linearity testing device, which can conveniently carry out simple tests on linearity of a PCB carbon film by using effective resources, and can effectively use current devices to carry out simple combination for performing substantial functions. The linearity testing device at least comprises a linearity testing tool, a comprehensive test platform electrically connected with the linearity testing tool and a PC machine electrically connected with the comprehensive test platform. The beneficial effects of the linearity testing device are that, the structure is simple, performance is good; the linearity testing device can guarantee a good electrical combination performance meanwhile providing a good testing performance; devices used for the linearity testing device are all instruments commonly used in the existing market, so material drawing is simple and convenient, and cost is low.
Description
Technical field
The utility model relates to a kind of linearity test device, particularly a kind of simple linear proving installation that is used for automotive air-conditioning system.
Background technology
In automotive air-conditioning system, the air door actuator is installed on the air conditioning box body at present, is used to drive throttle linkage, with unlatching and a certain ad-hoc location closed or that mediate of adjusting air door.And controller determines by gathering the actuator feedback voltage whether actuator rotate in place, bad as the actuator PCB carbon film linearity, then can cause the corresponding relation of angle and voltage inaccurate, cause the output arm off normal, thus cause the air door closure tight, open not exclusively or defectives such as air quantity unreasonable distribution; In order to detect the linearity of actuator PCB carbon film, the PCB plated film producer test linearity is to use special-purpose linear tester, price comparison costliness; Can not widespread usage.In order to make things convenient for, simply to utilize efficient resource to carry out the simple test of the linearity of PCB carbon film, a kind of new, low price, can be when good test performance be provided, guarantee good testing efficiency, the invention of linearity test device is imperative.
The utility model content
The technical problems to be solved in the utility model is that the PCB plated film producer test linearity is to use special-purpose linear tester, and the price comparison costliness can not widespread usage.
In order to solve the problems of the technologies described above, the utility model provides a kind of linearity test device, it can make things convenient for, simply utilize efficient resource to carry out the simple test of the linearity of PCB carbon film, can effectively utilize existing equipment, simply makes up and then bring into play huge function.
That is: a kind of linearity test device, it comprises linear test fixture at least, the comprehensive test platform that electrically connects with linear test fixture and three ingredients of PC that electrically connect with comprehensive test platform.Described linear test fixture output Start signalisation comprehensive test platform begins test, thereby by comprehensive test platform OPADD signal and by voltage collection circuit on the signal triggering select lines property testing frock, the magnitude of voltage that collects is handled to comprehensive test platform by the Out signal feedback, and in PC display process result.
Described comprehensive test platform comprises single-chip microcomputer, chip for driving and bleeder circuit at least.
Can write down the batch number and the linearity value thereof of the pcb board of being convenient to follow-up follow-up analysis on the described PC.
The beneficial effects of the utility model are: simple in structure, performance is good, and it can guarantee the excellent electrical property composite behaviour when good test performance is provided, and device therefor all is a common instrument in the market, so it is simple and convenient to draw materials, cost is low.
Description of drawings
To the description of embodiment of the present utility model, can further understand its practical novel purpose, specific structural features and advantage by following in conjunction with its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the interface synoptic diagram of linear test fixture of the present utility model and comprehensive test platform;
Fig. 2 is the circuit theory synoptic diagram of the linear test fixture of linearity test device of the present utility model;
Fig. 3 is the signal acquisition circuit principle schematic of the linear test fixture of linearity test device.
Embodiment
The utility model is the simple linear proving installation that is applied in automotive air-conditioning system, is the significant improvement of making on the basis to the linearity test device shortcoming of existing costliness, has very important practice significance.
For enhancing productivity, general 8 jigsaw that adopt of the production of actuator PCB, so in order to guarantee testing efficiency, test fixture is wanted the carbon film linearity that can test 8 PCB simultaneously, the utility model linearity test device is that embodiment specifically describes to test 8 jigsaw PCB.
As Figure 1-3, the utility model linearity test device begins test by linear test fixture output Start signalisation test platform, thereby by test platform OPADD signal A0-A7 and by voltage collection circuit on the STB signal triggering select lines property testing frock, the magnitude of voltage that collects is handled to comprehensive test platform by the Out signal feedback, and in PC display process result.Described A0-A7 is an address signal, the voltage signal output of OUT for gathering, and STB is described CD4515B chip enable signal hereinafter.
Mainly used CD4515B and CD4067B two chip in this circuit, the chip data is seen following annex.
CD4515 (item is U91) is 1 16 tunnel a code translator, and its output truth table is as follows in schematic diagram:
Table one
For example when A7, A6, A5, A4 input was respectively 1,0,0,0, the S11 signal was output as 0 (low level).Described S11, S12 ... S82 is the enable signal of CD4067B.
CD4067B (item be U11, U21 ..., U81, U12, U22......U82) be 1 16 tunnel bidirectional analog switch, when forbidding holding INH to be low level 0 (this signal is by CD4515 output control), selected among a S0-S15 input end is connected with output common port D (i.e. 1 pin), selected go side is by external address input end A0～A3 decision, when INH is high level 1, be in illegal state, all analog switches are all disconnected.Described PX01, PX02 ... PX30 is the voltage signal input port.Its output truth table is as follows:
Table 2
TLE4264-2G (item is U92) changes the DC-DC power conversion chip of 5V for 12V
As shown in the figure, the IG2 in the schematic diagram is+input of 12V power supply, be used for to chip power supply ,+5V voltage and GND by metal probe snap into+5V and GND pad give the power supply of actuator PCB carbon film.
Whole steering logic specifically describes as follows: after switch SW 91 was opened, comprehensive test platform was from Start port processing level, and when level was in the 9V-16V scope, test began
1, gathers PCB carbon film feedback voltage
1) according to table one, comprehensive test platform output A7, A6, A5, the A4 signal value is respectively: 1,0,0,0 o'clock, U91 output S11 low level signal, enable U11, comprehensive test platform is exported A3 successively according to table two (X=1), A2, A1, the high-low level signal of A0, control Out signal respectively with P101, P102, ..., P115 imports conducting, and P101, P102, ..., the P115 signal snaps on the carbon film by metal probe, so comprehensive test platform is the feedback voltage of carbon film all angles from Out input voltage collection value, is made as U101, U102, ..., U115;
2) according to table one, comprehensive test platform output A7, A6, A5, the A4 signal value is respectively: 1,0,0,1 o'clock, U91 output S12 low level signal, enable U12, comprehensive test platform is according to table two output A 3, A2, A1, the high-low level signal of A0, control Out signal respectively with P116, P117, ..., P130 imports conducting, and P116, P117, ..., the P130 signal snaps on the carbon film by metal probe, so comprehensive test platform is the feedback voltage of carbon film all angles from Out input voltage collection value, is made as U116, U117, ..., U130;
3) to the magnitude of voltage U101, the U102 that collect ..., U130, remove insignificant value (null value or suspension magnitude of voltage), remaining magnitude of voltage both had been each angle Voltage Feedback value of the 1st actuator PCB carbon film;
4) in like manner,, can collect the 2nd to the 8th each angle Voltage Feedback value of actuator PCB carbon film according to table one, table two OPADD signal successively.
2, the linearity is calculated
1) method one:
The hypothesis carbon film is an absolute linearity earlier, calculates the theoretical value of each angle feedback voltage of carbon film, and carbon film linearity computing formula is so:
ρ=| (measured value-theoretical value)/theoretical value |
The ρ value is more little as can be seen from formula, and the linearity is good more, so can filter out maximal value, is defined as the linearity of whole PCB.
2) method two (approximate data):
Adjacent subtracts each other, and filters out maximal value and minimum value, deducts minimum value divided by 5 with maximal value then, is defined as the linearity of this PCB.
3, on PC, can write down the batch number and the linearity value thereof of pcb board, be convenient to follow-up follow-up analysis.
The description of above preferred embodiment makes those skilled in the art can make or use the utility model.The various modifications of these embodiment are conspicuous for a person skilled in the art, and Ding Yi General Principle can be applied among other embodiment and not deviate from spirit or scope of the present utility model here.Therefore, the embodiment that the utility model is not limited to illustrate here, and will meet and the principle and the novel feature the most wide in range consistent scope that disclose here.
Claims (4)
1. a linearity test device is characterized in that, it comprises linear test fixture at least, the comprehensive test platform that electrically connects with linear test fixture and three ingredients of PC that electrically connect with comprehensive test platform.
2. linearity test device as claimed in claim 1, it is characterized in that, described linear test fixture output Start signalisation comprehensive test platform begins test, thereby by comprehensive test platform OPADD signal and by voltage collection circuit on the signal triggering select lines property testing frock, the magnitude of voltage that collects is handled to comprehensive test platform by the Out signal feedback, and in PC display process result.
3. as the described linearity test device in one of claim 1 and 2, it is characterized in that described comprehensive test platform comprises single-chip microcomputer, chip for driving and bleeder circuit at least.
4. linearity test device as claimed in claim 1 is characterized in that, can write down the batch number and the linearity value thereof of the pcb board of being convenient to follow-up follow-up analysis on the described PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200522662U CN202057476U (en) | 2011-03-01 | 2011-03-01 | Linearity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200522662U CN202057476U (en) | 2011-03-01 | 2011-03-01 | Linearity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202057476U true CN202057476U (en) | 2011-11-30 |
Family
ID=45017447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200522662U Expired - Lifetime CN202057476U (en) | 2011-03-01 | 2011-03-01 | Linearity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202057476U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969531A (en) * | 2014-05-09 | 2014-08-06 | 王允 | Automatic testing device for linearity of linear optical coupler |
| CN106249091A (en) * | 2016-10-19 | 2016-12-21 | 江苏理工学院 | A kind of air door actuator of automobile air-conditioner linearity detector and detection method thereof |
| CN110879349A (en) * | 2019-12-03 | 2020-03-13 | 孝感华工高理电子有限公司 | Linear testing arrangement of executor circuit board carbon film |
-
2011
- 2011-03-01 CN CN2011200522662U patent/CN202057476U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969531A (en) * | 2014-05-09 | 2014-08-06 | 王允 | Automatic testing device for linearity of linear optical coupler |
| CN103969531B (en) * | 2014-05-09 | 2017-02-15 | 王允 | Automatic testing device for linearity of linear optical coupler |
| CN106249091A (en) * | 2016-10-19 | 2016-12-21 | 江苏理工学院 | A kind of air door actuator of automobile air-conditioner linearity detector and detection method thereof |
| CN106249091B (en) * | 2016-10-19 | 2019-03-15 | 江苏理工学院 | A kind of air door actuator of automobile air-conditioner linearity detector and its detection method |
| CN110879349A (en) * | 2019-12-03 | 2020-03-13 | 孝感华工高理电子有限公司 | Linear testing arrangement of executor circuit board carbon film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202171626U (en) | Multi-point point-touching touch screen testing machine | |
| CN202057476U (en) | Linearity testing device | |
| CN202676871U (en) | Breaker testing stand | |
| CN203587761U (en) | Frequency converter mainboard tester | |
| CN202600118U (en) | Driving power supply testing device | |
| CN207335757U (en) | A kind of test system of automobile combination meter | |
| CN102175280A (en) | Digitalized vehicle instrument simulating device | |
| CN103743334A (en) | Resistance strain gauge | |
| CN205176218U (en) | Micro -gap switch testing arrangement | |
| CN202330385U (en) | General gas prober with parameter setting function | |
| CN203037782U (en) | Device structure for testing LED device life in quantities | |
| CN203422426U (en) | Universal comprehensive automatic test system of airborne computer of civilian airliner | |
| CN2572346Y (en) | Universal test and analysis instrument for electromechanical equipment of ship and warship | |
| CN103175605A (en) | Mining portable vibration signal acquisition recording system | |
| CN104198919B (en) | Steering tool electric circuit in well plate performance monitoring system based on KingView and PLC | |
| CN201266220Y (en) | Power module test device | |
| CN201974479U (en) | Potentiometer testing device | |
| CN201434766Y (en) | Feedback button life-span tester | |
| CN201060006Y (en) | Bus type debugging diagnostic apparatus | |
| CN109444626B (en) | Short circuit test system between motor phase changer sheets and working method thereof | |
| CN105651821A (en) | Iron refined powder grade tester | |
| CN203982183U (en) | Fan governor proving installation | |
| CN102937669A (en) | Vehicle power-operated sliding door anti-pinch strip detection circuit | |
| CN202305551U (en) | Engine speed signal instrument for complete vehicle test | |
| CN2840187Y (en) | Testing clamp hard disc switching device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201800, B, Lane 518, Lane 1, Heng Yong Road, Shanghai, Jiading District 501-1 Patentee after: Shanghai Fengtian Electronic Co., Ltd. Address before: 200331, 3 floor, building 1570, 5 Gulang Road, Shanghai, Putuo District Patentee before: Shanghai Fengtian Electronic Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111130 |