CN107992031B - FCT test system based on resistance simulation - Google Patents
FCT test system based on resistance simulation Download PDFInfo
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- CN107992031B CN107992031B CN201711418326.6A CN201711418326A CN107992031B CN 107992031 B CN107992031 B CN 107992031B CN 201711418326 A CN201711418326 A CN 201711418326A CN 107992031 B CN107992031 B CN 107992031B
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000004088 simulation Methods 0.000 title claims abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 50
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
Abstract
The invention discloses an FCT test system based on resistance simulation, which comprises a test device, wherein the test device comprises a box body, a box cover of the box body is provided with a mounting seat for mounting an ECU control box, and the box body is also provided with a probe mechanism for being connected with an interface of the ECU control box and a dotting mechanism capable of dotting the ECU control box; the FCT test system also comprises a control system, wherein the control system comprises a control unit, a power supply unit and four resistors for simulating automobile back door signals. The invention can test the vehicle back door ECU, has small test result deviation and low false detection rate, can completely detect the design function of the product, ensures the product quality, has high automation level and high test efficiency, and reduces the labor cost; in addition, compared with the real vehicle test, the FCT test has the advantages of lower cost, easy operation and easy realization, and can realize the test of the performance of each vehicle back door ECU in the mass production stage of the vehicle back door ECU.
Description
Technical Field
The invention relates to the technical field of FCT (electronic control unit) testing, in particular to a resistance simulation-based FCT testing system which is suitable for testing a vehicle back door ECU.
Background
The FCT refers to a test method for providing a simulated operating environment (such as a load) for a product to be tested, so that the product to be tested works in various design states, and parameters of various states are obtained to verify the function of the product to be tested. In short, the method loads proper excitation to the product to be tested, and measures whether the response of the output end meets the design requirement. Typically for functional inspection of electronic circuit board products.
The ECU, i.e., the electronic control unit, is very widely used in the automotive field. The ECU includes a housing and internal components, the internal components of which are mainly composed of a circuit board and a coil. An Electronic Control Unit (ECU) is used as a key component of the vehicle tail gate control management system for detecting and controlling the normal operation of the vehicle tail gate.
In order to meet the higher requirements of consumers on the opening or closing modes of the back door (such as intelligent unlocking, remote unlocking, anti-pinch, kick unlocking and the like), an ECU with stronger and more stable functions needs to be designed, and the performance of the ECU directly relates to the performance of the back door, so that the expected control function can be finally realized only by repeated debugging in development, namely, the test on the ECU of the back door of the vehicle is needed, and most of the tests on the ECU of the back door of the vehicle in the prior art are difficult to obtain in real vehicle tests, and the cost is very high. And it is generally not suitable to directly install the ECU in an actual system for testing, because the ECU implemented for the first time has many defects such as software and hardware, if it is directly integrated in the system, it is inconvenient to debug the ECU in the early stage, and on the other hand, serious defects of the ECU may cause damage to the system, resulting in unnecessary loss.
In addition, the prior art has fewer test contents, and has no FCT device which is specially used for testing a vehicle back door ECU, such as the FCT needle point test fixture of China patent, application publication number: CN 102411069A discloses a FCT needle point test fixture, which has simple structure, larger test result deviation and high false detection rate, although the function test can be realized, and the design function of the product can not be completely detected. There is a potential risk of product quality. And the automation level is low, the testing efficiency is low, and the labor cost is high.
To overcome the above drawbacks, those skilled in the art have innovated researches in an effort to create an FCT test system based on resistance simulation.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the FCT test system based on the resistance simulation, which can test the ECU of the back door of the vehicle, has small test result deviation and low false detection rate, can completely detect the design function of the product, ensures the quality of the product, has high automation level and high test efficiency, and reduces the labor cost; in addition, compared with the real vehicle test, the FCT test has the advantages of lower cost, easy operation and easy realization, and can realize the test of the ECU performance of each vehicle back door in the mass production stage of the ECU of the vehicle back door, thereby ensuring the realization of the ECU performance of each vehicle back door.
In order to solve the technical problems, the invention adopts a technical scheme that: the FCT testing system based on the resistance simulation comprises a testing device, wherein the testing device comprises a box body, a box cover of the box body is provided with a mounting seat for mounting an ECU control box, and the box body is also provided with a probe mechanism for being connected with an interface of the ECU control box and a dotting mechanism capable of dotting the ECU control box;
the mounting seat comprises four limit blocking strips, wherein the limit blocking strips enclose a containing space matched with the size and the shape of the ECU control box, and the ECU control box is placed in the containing space and is fixedly limited by the limit blocking strips;
the probe mechanism comprises a probe, a probe fixing seat and an elbow clamp, the probe is arranged on the probe fixing seat, the height of the probe is consistent with the height of an interface of the ECU control box placed in the accommodating space, and the elbow clamp pushes the probe fixing seat to translate so as to drive the probe to be inserted into the interface of the ECU control box;
the dotting mechanism comprises a dotting pen, a dotting pen fixing seat and a pushing unit for driving the dotting pen fixing seat to translate, the dotting pen is parallel to the box cover, the pen point end of the dotting pen is close to the ECU control box, the dotting pen is detachably connected with the dotting pen fixing seat, and the pushing unit drives the dotting pen to be close to or far away from the ECU control box;
the FCT test system further comprises a control system, the control system comprises a control unit, a power supply unit and four resistors for simulating automobile back door signals, the four resistors are respectively a first resistor, a second resistor, a third resistor and a fourth resistor, an ECU is installed in an ECU control box, the control unit is electrically connected with the power supply unit, the control unit is electrically connected with the probe, the probe is electrically connected with the ECU, the control unit is respectively electrically connected with the first resistor, the second resistor, the third resistor and the fourth resistor, and the control unit is electrically connected with the dotting mechanism.
Further, the pushing unit comprises a guide post, an electromagnet and a reset spring, the electromagnet is arranged in the box body, the guide post is parallel to the length direction of the dotting pen, the dotting pen fixing seat is sleeved on the guide post, two ends of the guide post are respectively fixed on the box body, one side of the guide post is provided with the electromagnet, the reset spring is sleeved on the guide post and is positioned between the electromagnet and the dotting pen fixing seat, the dotting pen fixing seat is a magnetic conductive metal seat, and the metal seat can move along the guide post to be close to the ECU control box when the electromagnet is electrified and reset through the reset spring after the electric power is cut off.
Further, the first resistor and the second resistor are both analog resistors for simulating a vehicle back door electric stay, and the third resistor and the fourth resistor are both resistive sensors for simulating vehicle back door obstacle detection.
Further, one of the limiting barrier strips, which is opposite to the probe, is defined as an adjustable barrier strip, a plurality of threaded through holes are formed in the adjustable barrier strip, the threaded through holes are distributed at intervals along the length direction of the barrier strip, adjusting handles with the number of the threaded through holes being always equal to that of the threaded through holes are further arranged, the adjusting handles are in threaded connection with the threaded through holes, and the end parts of the adjusting handles are tightly abutted to the ECU control box.
Further, the threaded through holes are three and are respectively positioned in the middle and at the two ends of the adjustable barrier strip.
Further, the end part of each adjusting handle is sleeved with an elastic rubber sleeve.
Further, the elbow clamp is a manual elbow clamp.
Further, the elbow clamp is an electric or pneumatic elbow clamp, and the elbow clamp is electrically connected with the control unit.
Further, the free length of the return spring is 8cm.
The beneficial effects of the invention are as follows: the invention has at least the following advantages:
according to the invention, an ECU control box is placed in a mounting seat and is fixedly limited by a limiting strip, a probe is inserted into an interface of the ECU control box to be connected with the ECU, then a testing device is started, a control unit transmits an ECU instruction to four resistors for simulating automobile back door signals through the probe to simulate functions of the resistors, a test result signal is transmitted to the control unit through the probe, if the test result is qualified, the control unit controls an electromagnet to act, so that a dotting pen mounting seat moves along a guide post and approaches the ECU control box to perform dotting, after dotting is finished, the dotting pen mounting seat is reset through a reset spring, and the test of the product is finished; if the product is unqualified, dotting is not performed; therefore, the invention has at least the following advantages:
1. according to the invention, the vehicle back door ECU can be tested, the test result deviation is small, the false detection rate is low, the design function of a product can be completely detected, the product quality is ensured, the automation level is high, the test efficiency is high, and the labor cost is reduced; in addition, compared with a real vehicle test, the FCT test has the advantages of lower cost, easy operation and easy realization, and can realize the test of the ECU performance of each vehicle back door in the mass production stage of the ECU of the vehicle back door, ensure the realization of the ECU performance of each vehicle back door and improve the safety and reliability of the ECU;
2. compared with the actual vehicle test, the FCT test has the advantages of lower cost, easy operation and easy realization, and can realize the test of the ECU performance of each vehicle back door in the mass production stage of the vehicle back door ECU, ensure the realization of the ECU performance of each vehicle back door, have extremely high safety and reliability and avoid the generation of bad products;
3. the automatic dotting device is provided with the dotting mechanism, is automatically controlled by the control unit, automatically dotts according to the quality of the product after the product detection is finished, has high automation level and high testing efficiency, reduces the labor cost, can avoid the condition of missed dotting and misplacing during manual dotting, and improves the accuracy of product testing;
4. the box cover of the box body is provided with the mounting seat for mounting the ECU control box, the mounting seat comprises four limit baffle bars, one of the limit baffle bars, which is opposite to the probe, is an adjustable baffle bar, a plurality of threaded through holes are formed in the adjustable baffle bar, the adjusting handle is in threaded connection with the threaded through holes, the end part of the adjusting handle is abutted against the ECU control box, and the distance between the interface of the control box and the probe is adjusted by screwing or unscrewing the adjusting handle, so that the structure of the ECU control box can be accurately matched with the probe, and the problem that the ECU control box cannot be accurately matched with the probe when the size of the ECU control box has deviation can be solved;
5. the end part of the adjusting handle is sleeved with the elastic rubber sleeve, so that the ECU control box is not scratched when the ECU control box is abutted tightly.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a control schematic of the present invention;
FIG. 3 is a schematic structural view of the dotting mechanism at A of FIG. 1;
fig. 4 is one of the schematic structural views of the portion B of fig. 1 (seen from the front);
FIG. 5 is a second schematic view of the portion B of FIG. 1 (from the left side);
the parts in the drawings are marked as follows:
the electronic control unit comprises a box body 1, a probe mechanism 2, a probe 21, a probe fixing seat 22, an elbow clamp 23, a dotting mechanism 3, a dotting pen 31, a dotting pen fixing seat 32, a guide pillar 33, an electromagnet 34, a return spring 35, a limiting stop bar 4, an adjustable stop bar 41, an adjusting handle 42, a control unit 51, a power supply unit 52, a first resistor 53, a second resistor 54, a third resistor 55, a fourth resistor 56, an ECU control box 6 and an ECU 7.
Detailed Description
The following specific embodiments of the invention are described in order to provide those skilled in the art with an understanding of the present disclosure. The invention may be embodied in other different forms, i.e., modified and changed without departing from the scope of the invention.
Examples: the FCT test system based on resistance simulation comprises a test device, as shown in fig. 1 to 5, wherein the test device comprises a box body 1, a box cover of the box body is provided with a mounting seat for mounting an ECU control box 6, and the box body is also provided with a probe mechanism 2 for being connected with an interface of the ECU control box and a dotting mechanism 3 capable of dotting the ECU control box;
the mounting seat comprises four limit stop bars 4, wherein the limit stop bars enclose a containing space matched with the size and the shape of the ECU control box, and the ECU control box is placed in the containing space and is fixedly limited by the limit stop bars;
the probe mechanism comprises a probe 21, a probe fixing seat 22 and an elbow clamp 23, the probe is arranged on the probe fixing seat, the height of the probe is consistent with the height of an interface of the ECU control box after the ECU control box is placed in the accommodating space, and the elbow clamp pushes the probe fixing seat to translate so as to drive the probe to be inserted into the interface of the ECU control box;
the dotting mechanism comprises a dotting pen 31, a dotting pen fixing seat 32 and a pushing unit for driving the dotting pen fixing seat to translate, the dotting pen is parallel to the box cover, the pen point end of the dotting pen is close to the ECU control box, the dotting pen is detachably connected with the dotting pen fixing seat, and the pushing unit drives the dotting pen to be close to or far away from the ECU control box;
the FCT test system further comprises a control system, the control system comprises a control unit 51, a power supply unit 52 and four resistors for simulating automobile back door signals, the four resistors are a first resistor 53, a second resistor 54, a third resistor 55 and a fourth resistor 56 respectively, the ECU 7 is installed in an ECU control box, the control unit is electrically connected with the power supply unit, the control unit is electrically connected with the probe, the probe is electrically connected with the ECU, the control unit is electrically connected with the first resistor, the second resistor, the third resistor and the fourth resistor respectively, and the control unit is electrically connected with the dotting mechanism.
The pushing unit comprises a guide pillar 33, an electromagnet 34 and a reset spring 35, wherein the electromagnet is arranged in the box body, the guide pillar is parallel to the length direction of the dotting pen, the dotting pen fixing seat is sleeved on the guide pillar, two ends of the guide pillar are respectively fixed on the box body, one side of the guide pillar is provided with the electromagnet, the reset spring is sleeved on the guide pillar and is positioned between the electromagnet and the dotting pen fixing seat, the dotting pen fixing seat is a magnetic conductive metal seat, and the metal seat can move along the guide pillar to be close to the ECU control box when the electromagnet is electrified and reset through the reset spring after power failure.
In this embodiment, the first resistor and the second resistor are both analog resistors simulating a vehicle back door electric stay, and the third resistor and the fourth resistor are both resistive sensors simulating vehicle back door obstacle detection.
More preferably, one of the limit stop bars, which is opposite to the probe, is defined as an adjustable stop bar 41, a plurality of threaded through holes are formed in the adjustable stop bar, the threaded through holes are distributed at intervals along the length direction of the stop bar, an adjusting handle 42 which is always in the number of the threaded through holes is further arranged, the adjusting handle is in threaded connection with the threaded through holes, and the end part of the adjusting handle is abutted to the ECU control box.
The threaded through holes are three and are respectively positioned in the middle and at the two ends of the adjustable barrier strip.
An elastic rubber sleeve is sleeved at the end part of each adjusting handle.
The elbow clamp is a manual elbow clamp.
Preferably, the toggle clamp is an electric or pneumatic toggle clamp, and the toggle clamp is electrically connected with the control unit.
The free length of the return spring is 8cm.
The working process and working principle of the invention are as follows:
the ECU control box is placed in the mounting seat and is fixedly limited through the limiting strip, the probe is inserted into an interface of the ECU control box to be connected with the ECU, then the testing device is started, the control unit transmits an ECU instruction to four resistors for simulating automobile back door signals through the probe, functions of the four resistors are simulated, testing is carried out, a test result signal is transmitted to the control unit through the probe, if the test result is qualified, the control unit controls the electromagnet to act, the dotting pen mounting seat moves along the guide post and is close to the ECU control box to perform dotting, after dotting is finished, the dotting pen mounting seat is reset through the reset spring, and testing of the product is finished; if the product is unqualified, dotting is not performed.
The foregoing description is only illustrative of the present invention and is not to be construed as limiting the scope of the invention, and all equivalent structures made by the description of the invention and the accompanying drawings, or direct or indirect application in other related technical fields, are equally included in the scope of the invention.
Claims (7)
1. The FCT test system based on resistance simulation is characterized in that: the test device comprises a box body (1), wherein a mounting seat for mounting an ECU control box (6) is arranged on a box cover of the box body, and the box body is further provided with a probe mechanism (2) connected with an interface of the ECU control box and a dotting mechanism (3) capable of dotting the ECU control box;
the mounting seat comprises four limit blocking strips (4), wherein the limit blocking strips enclose a containing space matched with the size and the shape of the ECU control box, and the ECU control box is placed in the containing space and is fixedly limited by the limit blocking strips;
the probe mechanism comprises a probe (21), a probe fixing seat (22) and an elbow clamp (23), the probe is arranged on the probe fixing seat, the height of the probe is consistent with the height of an interface of the ECU control box placed in the accommodating space, and the elbow clamp pushes the probe fixing seat to translate so as to drive the probe to be inserted into the interface of the ECU control box;
the dotting mechanism comprises a dotting pen (31), a dotting pen fixing seat (32) and a pushing unit for driving the dotting pen fixing seat to translate, the dotting pen is parallel to the box cover, the pen point end of the dotting pen is close to the ECU control box, the dotting pen is detachably connected with the dotting pen fixing seat, and the pushing unit drives the dotting pen to be close to or far away from the ECU control box;
the FCT test system further comprises a control system, the control system comprises a control unit (51), a power supply unit (52) and four resistors for simulating automobile back door signals, the four resistors are a first resistor (53), a second resistor (54), a third resistor (55) and a fourth resistor (56) respectively, an ECU (7) is arranged in an ECU control box, the control unit is electrically connected with the power supply unit, the control unit is electrically connected with a probe, the probe is electrically connected with the ECU, the control unit is electrically connected with the first resistor, the second resistor, the third resistor and the fourth resistor respectively, and the control unit is electrically connected with the dotting mechanism;
the pushing unit comprises a guide post (33), an electromagnet (34) and a reset spring (35), wherein the electromagnet is arranged in the box body, the guide post is parallel to the length direction of the dotting pen, the dotting pen fixing seat is sleeved on the guide post, two ends of the guide post are respectively fixed on the box body, one side of the guide post is provided with the electromagnet, the reset spring is sleeved on the guide post and is positioned between the electromagnet and the dotting pen fixing seat, the dotting pen fixing seat is a magnetic conductive metal seat, and the metal seat can move along the guide post to be close to the ECU control box when the electromagnet is electrified and reset through the reset spring after power is off;
the first resistor and the second resistor are both analog resistors for simulating the electric stay bar of the back door of the vehicle, and the third resistor and the fourth resistor are both resistance sensors for simulating the detection of the obstacle of the back door of the vehicle.
2. The resistance simulation-based FCT test system of claim 1, wherein: one of the limiting barrier strips, which is opposite to the probe, is defined as an adjustable barrier strip (41), a plurality of threaded through holes are formed in the adjustable barrier strip, the threaded through holes are distributed at intervals along the length direction of the barrier strip, an adjusting handle (42) with the number of the threaded through holes is arranged at all times, the adjusting handle is in threaded connection with the threaded through holes, and the end part of the adjusting handle is tightly abutted to the ECU control box.
3. The resistance simulation-based FCT test system of claim 2, wherein: the threaded through holes are three and are respectively positioned in the middle and at the two ends of the adjustable barrier strip.
4. The resistance simulation-based FCT test system of claim 2, wherein: an elastic rubber sleeve is sleeved at the end part of each adjusting handle.
5. The resistance simulation-based FCT test system of claim 1, wherein: the elbow clamp is a manual elbow clamp.
6. The resistance simulation-based FCT test system of claim 1, wherein: the elbow clamp is an electric or pneumatic elbow clamp, and the elbow clamp is electrically connected with the control unit.
7. The resistance simulation-based FCT test system of claim 1, wherein: the free length of the return spring is 8cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711418326.6A CN107992031B (en) | 2017-12-25 | 2017-12-25 | FCT test system based on resistance simulation |
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| CN201711418326.6A CN107992031B (en) | 2017-12-25 | 2017-12-25 | FCT test system based on resistance simulation |
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| CN107992031B true CN107992031B (en) | 2024-03-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976621A (en) * | 2017-12-25 | 2018-05-01 | 苏州睿艾迪汽车科技有限公司 | FCT test equipments based on resistance simulation |
| CN108536131B (en) * | 2018-06-19 | 2024-02-13 | 武汉菱电汽车电控系统股份有限公司 | ECU connecting piece, ECU and ECU subassembly |
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