CN216117913U - Wire harness test switching system based on analog switch - Google Patents
Wire harness test switching system based on analog switch Download PDFInfo
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- CN216117913U CN216117913U CN202122640785.7U CN202122640785U CN216117913U CN 216117913 U CN216117913 U CN 216117913U CN 202122640785 U CN202122640785 U CN 202122640785U CN 216117913 U CN216117913 U CN 216117913U
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Abstract
A wire harness test switching system based on an analog switch comprises: the control mainboard is electrically connected with the communication module and sends a control instruction to any one or any plurality of the N drive modules through the communication module; the communication module is electrically connected with the control main board and the N drive modules to realize communication between the control main board and the N drive modules; and any one or any plurality of driving modules receive the instruction sent by the control main board and respectively control the corresponding at least one analog switch chip to act. According to the utility model, the driving module drives the analog switch chip to act, so that the rapid switching of the wire harness detection equipment is realized, and the volume of the wire harness detection equipment is greatly reduced; the anti-interference module is installed to the power end, utilizes the anti-interference module to protect the power end, prevents that pencil switched systems from receiving the electromagnetic interference that the power end spreads into.
Description
Technical Field
The utility model relates to the field of wire harness testing, in particular to a wire harness testing switching system based on an analog switch.
Background
The traditional wire harness tester usually adopts a mechanical relay to switch, and because the single action time of the mechanical relay usually needs ms, and a plurality of relays are usually required to be matched to perform closing action when channels are switched in the wire harness test, the switching speed is usually below 100 points/S, and the switching speed does not exceed 200 points/S under the limit condition. Meanwhile, the service life of the mechanical relay is also seriously influenced by frequent switching.
In the process of identifying the wire harness relationship, the traditional method usually measures the resistance value between two points through the predefined core wire relationship so as to determine the on, off and short states of the wire harness. In this method, if the relationship and state between all points are identified, N measurements (N is the total number of points of the wire harness) are required, and 10 seconds is required for the test calculation at a speed of 100 points/s with a 100-point wire harness. In large complex electronic equipment, the number of the wire spots is thousands or even tens of thousands, the recognition time is too long, and the operability is not very large.
In view of the above, it is desirable to provide a wiring harness test switching system based on an analog switch to identify the paths, opens and shorts between two points of the wiring harness.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the above disadvantages of the prior art, and to provide a harness test switching system based on an analog switch, which shortens the test time of the harness test switching device.
The technical scheme for solving the technical problems is as follows:
a wire harness test switching system based on an analog switch comprises:
the control mainboard is electrically connected with the communication module and sends a control instruction to any one or any plurality of the N drive modules through the communication module;
the communication module is electrically connected with the control main board and the N drive modules to realize communication between the control main board and the N drive modules;
and any one or any plurality of driving modules receive the instruction sent by the control main board and respectively control the corresponding at least one analog switch chip to act.
As a further improvement of the utility model, the method also comprises the following steps:
and the input module is electrically connected with the control mainboard and sends any one or more analog switch chip action instructions to the control mainboard through the input module.
As a further improvement of the utility model, the method also comprises the following steps:
the external wire harness to be tested is connected to at least one wire harness plug interface; the M wire harness plugging interfaces are electrically connected with different analog switch chips, and power interfaces are further connected on the connecting circuits of the wire harness plugging interfaces and the analog switch chips and connected with the power module.
As a further improvement of the utility model, each driving module is electrically connected with X analog switch chips, and X is more than or equal to 2;
and an input pin of the driving module is connected with the communication module, and an output pin of the driving module is connected with the X analog switch chips.
As a further improvement of the present invention, the driving module has 4X +2 pins, wherein 2X pins are input pins and are respectively connected to the same or different communication modules, 2X pins are output pins, and two of the 2X output pins are connected to an analog switch chip; one pin is a power supply terminal, and the other pin is grounded.
As a further improvement of the present invention, the control main board includes a first control chip and a second control chip, the first control chip is connected to the M driving modules, the first control chip sends control instructions to the M driving modules, the second control chip is connected to the N-M driving modules, and the second control chip sends control instructions to the N-M driving modules.
As a further improvement of the utility model, the clkl terminal of the first control chip is connected in series with the resistor R65 and then connected with the OUT pin of the chip Y1, the GND pin of the chip Y1 is grounded, the VCC pin of the chip Y1 is connected with the VDD2 power supply, and the VCC pin of the chip Y1 is also connected in series with the capacitor C11 and then grounded.
The utility model has the beneficial effects that:
1. according to the utility model, the driving module drives the analog switch chip to act, so that the rapid switching of the wire harness detection equipment is realized, and the volume of the wire harness detection equipment is greatly reduced.
2. The analog switch chip is connected with a power supply end, the power supply end is provided with an anti-interference module, the anti-interference module is used for protecting the power supply end, and the wire harness switching system is prevented from being subjected to electromagnetic interference transmitted by the power supply end.
Drawings
FIG. 1 is a schematic diagram of a wiring harness test switching system of the present invention;
FIG. 2 is a schematic diagram of a first analog switch chip;
FIG. 3 is a schematic diagram of a sixty-four analog switch chip;
FIG. 4 is a schematic diagram of a first driving module;
FIG. 5 is a schematic diagram of an eighth driving module;
FIG. 6 is a diagram of a first control chip;
FIG. 7 is a diagram of a second control chip;
FIG. 8 is a schematic diagram of chip Y1;
FIG. 9 is a schematic diagram of a POWER circuit connected to a POWER pin of the first control chip;
fig. 10 is a schematic diagram of another harness test switching system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
The embodiment of the utility model provides a wire harness test switching system based on an analog switch, which comprises a control main board, a communication module and N drive modules, wherein as can be seen from fig. 4 and 5, the wire harness test switching system provided by the embodiment of the utility model has eight drive modules, and schematic diagrams from a second drive module to a seventh drive module are omitted in the attached drawings of the specification. As can be seen from fig. 2 and 3, the embodiment of the present invention has 64 analog switch chips, and the schematic diagrams of the second analog switch chip to the sixty-third analog switch chip are omitted in the drawings of the specification. Wherein, one driving module is electrically connected with eight analog switch chips, specifically, as shown in fig. 4, pins 17 and 18 of the first driving module are connected with the first analog switch chip, pins 15 and 16 of the first driving module are connected with the seventeenth analog switch chip, pins 13 and 14 of the first driving module are connected with the second analog switch chip, pins 11 and 12 of the first driving module are connected with the eighteenth analog switch chip, as shown in fig. 4 and 6, pins 1 and 2 of the first driver module are connected to pins 20 and 21 of the first control module, pins 3 and 4 of the first driver module are connected to pins 18 and 19 of the first control module, pins 5 and 6 of the first driver module are connected to pins 16 and 17 of the first control module, and pins 7 and 8 of the first driver module are connected to pins 7 and 15 of the first control module. It should be noted that the analog switch chip model of the embodiment of the present invention is preferably DG 409. In the embodiment of the utility model, two relays are arranged on the PCB of each analog switch chip, and the two relays are used for controlling the voltage and current buses.
As shown in fig. 5, pins 17 and 18 of the first driving module are connected to a fifteenth analog switch chip, pins 15 and 16 of the first driving module are connected to a thirty-first analog switch chip, pins 13 and 14 of the first driving module are connected to a sixteenth analog switch chip, pins 11 and 12 of the first driving module are connected to a thirty-second analog switch chip, as shown in fig. 5 and 7, pins 1 and 2 of the eighth driving module are connected to pins 42 and 43 of the first control module, pins 3 and 4 of the eighth driving module are connected to pins 38 and 41 of the first control module, pins 5 and 6 of the eighth driving module are connected to pins 35 and 36 of the first control module, and pins 7 and 8 of the eighth driving module are connected to pins 33 and 34 of the first control module.
The control main board is electrically connected with the communication module and sends a control instruction to any one or any plurality of the N drive modules through the communication module; the communication module is electrically connected with the control main board and the N drive modules to realize communication between the control main board and the N drive modules; in the N drive modules, each drive module is electrically connected with at least one analog switch chip, each drive module respectively drives the analog switch chip corresponding to the drive module to act, and any one or any plurality of drive modules receive the instruction sent by the control main board and respectively control the corresponding at least one analog switch chip to act.
The wiring harness test switching system comprises a control mainboard, a communication module, N drive modules and an input module, wherein the input module is electrically connected with the control mainboard and sends any or several analog switch chip action instructions to the control mainboard through the input module.
The wiring harness test switching system comprises a control mainboard, a communication module, N driving modules and an input module, and also comprises M wiring harness plug interfaces, wherein the external wiring harnesses to be tested are connected to at least one wiring harness plug interface; the M wire harness plugging interfaces are electrically connected with different analog switch chips, and power interfaces are further connected on the connecting circuits of the wire harness plugging interfaces and the analog switch chips and connected with the power module.
In the embodiment of the utility model, each driving module is electrically connected with X analog switch chips, and X is more than or equal to 2; the input pin of the driving module is connected with the communication module, and the output pin of the driving module is connected with the X analog switch chips. As shown in fig. 4 and 5, it is preferable that the driving module has 4X +2 pins, wherein 2X pins are input pins and are respectively connected to the same or different communication modules, 2X pins are output pins, and two of the 2X output pins are connected to an analog switch chip; one pin is a power supply terminal, and the other pin is grounded.
Fig. 8 and 9 are respectively connected to pins of the first control chip in fig. 6, and as shown in fig. 6 and 7, the control main board includes a first control chip and a second control chip, the first control chip is connected to the M driving modules, the first control chip sends control instructions to the M driving modules, the second control chip is connected to the N-M driving modules, and the second control chip sends control instructions to the N-M driving modules. The clkl terminal of the first control chip is connected in series with the resistor R65 and then connected with the OUT pin of the chip Y1, the GND pin of the chip Y1 is grounded, the VCC pin of the chip Y1 is connected with VI) the power supply of D2, and the VCC pin of the chip Y1 is also connected in series with the capacitor C11 and then grounded.
According to the embodiment of the utility model, the driving module drives the analog switch chip to act, so that the rapid switching of the wire harness detection equipment is realized, and the size of the wire harness detection equipment is greatly reduced. The analog switch chip of the embodiment of the utility model is connected with the power supply end, the power supply end is provided with the anti-interference module, and the anti-interference module is used for protecting the power supply end so as to prevent the wire harness switching system from being subjected to electromagnetic interference transmitted by the power supply end.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (7)
1. A wiring harness test switching system based on an analog switch is characterized by comprising:
the control mainboard is electrically connected with the communication module and sends a control instruction to any one or any plurality of the N drive modules through the communication module;
the communication module is electrically connected with the control main board and the N drive modules to realize communication between the control main board and the N drive modules;
and any one or any plurality of driving modules receive the instruction sent by the control main board and respectively control the corresponding at least one analog switch chip to act.
2. The analog switch based harness test switching system of claim 1, further comprising: and the input module is electrically connected with the control mainboard and sends any one or more analog switch chip action instructions to the control mainboard through the input module.
3. The analog switch based harness test switching system of claim 1, further comprising: the external wire harness to be tested is connected to at least one wire harness plug interface; the M wire harness plugging interfaces are electrically connected with different analog switch chips, and power interfaces are further connected on the connecting circuits of the wire harness plugging interfaces and the analog switch chips and connected with the power module.
4. The analog switch based harness test switching system of claim 1, wherein: the driving module is electrically connected with X analog switch chips, and X is more than or equal to 2; and an input pin of the driving module is connected with the communication module, and an output pin of the driving module is connected with the X analog switch chips.
5. The analog switch based harness test switching system of claim 1, wherein: the driving module is provided with 4X +2 pins, wherein 2X pins are input pins and are respectively connected with the same or different communication modules, 2X pins are output pins, and every two 2X output pins are connected with an analog switch chip; one pin is a power supply terminal, and the other pin is grounded.
6. The analog switch based harness test switching system of claim 1, wherein: the control main board comprises a first control chip and a second control chip, the first control chip is connected with the M drive modules, the first control chip sends control instructions to the M drive modules, the second control chip is connected with the N-M drive modules, and the second control chip sends control instructions to the N-M drive modules.
7. The analog switch based harness test switching system of claim 6, wherein: the clkl terminal of the first control chip is connected in series with a resistor R65 and then connected with an OUT pin of a chip Y1, a GND pin of the chip Y1 is grounded, a VCC pin of the chip Y1 is connected with a VDD2 power supply, and a VCC pin of the chip Y1 is grounded after being connected in series with a capacitor C11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640785.7U CN216117913U (en) | 2021-10-29 | 2021-10-29 | Wire harness test switching system based on analog switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122640785.7U CN216117913U (en) | 2021-10-29 | 2021-10-29 | Wire harness test switching system based on analog switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216117913U true CN216117913U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122640785.7U Active CN216117913U (en) | 2021-10-29 | 2021-10-29 | Wire harness test switching system based on analog switch |
Country Status (1)
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|---|---|
| CN (1) | CN216117913U (en) |
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2021
- 2021-10-29 CN CN202122640785.7U patent/CN216117913U/en active Active
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