CA3141188A1 - Communication channel switching circuit for vehicle diagnosis equipment - Google Patents
Communication channel switching circuit for vehicle diagnosis equipment Download PDFInfo
- Publication number
- CA3141188A1 CA3141188A1 CA3141188A CA3141188A CA3141188A1 CA 3141188 A1 CA3141188 A1 CA 3141188A1 CA 3141188 A CA3141188 A CA 3141188A CA 3141188 A CA3141188 A CA 3141188A CA 3141188 A1 CA3141188 A1 CA 3141188A1
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- CA
- Canada
- Prior art keywords
- column
- electric contact
- channel switching
- switching circuit
- vehicle diagnosis
- 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.)
- Abandoned
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- 238000003745 diagnosis Methods 0.000 title claims description 24
- 239000011159 matrix material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
Classifications
-
- 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
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
- H04L12/40013—Details regarding a bus controller
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Selective Calling Equipment (AREA)
Abstract
Provided is a communication channel switching circuit of a vehicle diagnostic device, comprising: a plurality of communication channels (110) arranged on a circuit board (20); the communication channels (110) are connected to the pins of an on-board diagnostics (OBD) connector, respectively, by means of a plurality of switching elements (120); the circuit board (20) has through-holes (21) corresponding one-to-one to a plurality of switching elements (120); a switching element (120) comprises a first electrical contact element (121), a second electrical contact element (122), and a column body (123) which can move upward and downward; the cylinder body (123) passes through the through-hole (21), and the two are slidably fitted; the top of the column body (123) has an electrical conduction element (125) which can, when it moves downward, electrically contact, upward and downward, the first electrical contact element (121) and the second electrical contact element (122); a flexible self-restore element (126) is arranged between the electrical conduction element (125) and the circuit board (20); and a power source (124) used for driving the column body (123) to move upward and downward. The invention has the advantages of small size, low cost, stable functionality, applicability in high-power external circuits, and freedom from signal interference.
Description
COMMUNICATION CHANNEL SWITCHING CIRCUIT FOR VEHICLE DIAGNOSIS EQUIPMENT
Technical field The present invention relates to a vehicle diagnosis technical field, especially a communication channel switching circuit for vehicle diagnosis equipment.
Background technology Vehicle diagnosis equipment communicates with a vehicle control module, reads corresponding parameters, determines technical conditions of the vehicle, detects one or more fault locations and causes therefor, and is used to optimize vehicle operation and after-sales maintenance.
There are a variety of communication modes for the vehicle control module, such as 232 protocol, 485 protocol, 1708 protocol, CAN protocol, and K protocol etc., and definitions of pins in an OBD port of the vehicle are varied, to enable every communication channel of the diagnosis equipment to switch accurately to a pin corresponding to the OBD
plug, a switching circuit is designed to switch the communication channel to the corresponding pin, and the circuit is usually designed to be a matrix circuit.
Currently there are two kinds of switching circuits for vehicle diagnosis equipment available:
1. To make bus switch by a mechanical relay.
Technical field The present invention relates to a vehicle diagnosis technical field, especially a communication channel switching circuit for vehicle diagnosis equipment.
Background technology Vehicle diagnosis equipment communicates with a vehicle control module, reads corresponding parameters, determines technical conditions of the vehicle, detects one or more fault locations and causes therefor, and is used to optimize vehicle operation and after-sales maintenance.
There are a variety of communication modes for the vehicle control module, such as 232 protocol, 485 protocol, 1708 protocol, CAN protocol, and K protocol etc., and definitions of pins in an OBD port of the vehicle are varied, to enable every communication channel of the diagnosis equipment to switch accurately to a pin corresponding to the OBD
plug, a switching circuit is designed to switch the communication channel to the corresponding pin, and the circuit is usually designed to be a matrix circuit.
Currently there are two kinds of switching circuits for vehicle diagnosis equipment available:
1. To make bus switch by a mechanical relay.
2. To make bus switch with a solid-state relay.
Wherein, mechanical relays are of big size and occupying a large space, and solid-state relays are costly, not stable, subject to signal interference, and cannot be used for high power external circuits, and especially with increase of the communication channels (protocols), the foregoing disadvantages will be magnified exponentially.
Summary of the invention Based on the foregoing conditions and targeting at foregoing technical problems, the present invention provides a communication channel switching circuit for vehicle diagnosis equipment.
To address the foregoing technical problems, the present invention adopts a following technical Date Recue/Date Received 2021-11-18 solution:
A communication channel switching circuit for vehicle diagnosis equipment, comprising a plurality of communication channels provided on a circuit board, each of the plurality of communication channels is respectively connected with each of pins of an OBD
port by a plurality of switches, through-holes one-to-one corresponding to the plurality of switches are provided on the circuit board and each of the plurality of switches comprise:
A first electric contact and a second electric contact, the first electric contact and the second electric contact are provided beside a corresponding through-hole, wherein the first electric contact is connected with a corresponding communication channel, and the second electric contact is connected with a corresponding pin;
A vertically movable column, wherein the column passes the through-hole, the column engages with the through-hole by sliding, an electric conduction piece is provided on a top portion of the column, which when moving downwards will electrically contact the first electric contact and the second electric contact, and a flexible self-resuming piece is provided between the electric conduction piece and the circuit board;
And a power for driving the column to move vertically.
A limiting piece is radially provided on a lower end of the column.
The power is an electromagnetic coil, wherein the electromagnetic coil is radially provided beside a lower end of the column and is fixed on the circuit board, the column is an insulated column and the electric conduction piece is of magnetic metal materials.
The electric conduction piece is made of steel.
Enable control of the electromagnetic coil is made by an MOS driver circuit.
The first electric contact and the second electric contact are semi-circular copper sheets, symmetrically provided beside the through-hole.
The electric conduction piece comprises a horizontal rod, and both ends of the rod extend vertically downwards and form contact terminals corresponding to the first electric contact and Date Recue/Date Received 2021-11-18 the second electric contact.
The flexible self-resuming piece is a spring, and the spring is sleeved over an upper end of the column.
The through-holes are distributed in a matrix.
In the present invention, communication channels of the vehicle diagnosis equipment can be switched accurately to corresponding pins as required, the communication channel switching circuit for vehicle diagnosis equipment is suitable for use in application conditions where each of the multiple communication channels work independently, and is characterized by advantages such as of small size, low cost, functioning stably, applicable to external circuits of high power and free from signal interference etc.
Brief description of drawings Hereinafter a detailed description will be given to the present invention based on appended drawings and embodiments:
Figure 1 is a structural diagram showing the present invention;
Figure 2 is a structural diagram showing the switch in the present invention;
Figure 3 is a structural diagram showing the MOS driver circuit according to the present invention; and Figure 4 is a structural top view showing the first electric contacts and the second electric contacts according to the present invention.
Embodiments As shown in figure 1 and figure 2, a communication channel switching circuit for vehicle diagnosis equipment, comprising a plurality of communication channels 110 provided on a circuit board, wherein each of the plurality of communication channels 110 is respectively connected with each of pins of an OBD port by a plurality of switches 120, through-holes 21 one-to-one corresponding to the plurality of switches are provided on the circuit board 20, each
Wherein, mechanical relays are of big size and occupying a large space, and solid-state relays are costly, not stable, subject to signal interference, and cannot be used for high power external circuits, and especially with increase of the communication channels (protocols), the foregoing disadvantages will be magnified exponentially.
Summary of the invention Based on the foregoing conditions and targeting at foregoing technical problems, the present invention provides a communication channel switching circuit for vehicle diagnosis equipment.
To address the foregoing technical problems, the present invention adopts a following technical Date Recue/Date Received 2021-11-18 solution:
A communication channel switching circuit for vehicle diagnosis equipment, comprising a plurality of communication channels provided on a circuit board, each of the plurality of communication channels is respectively connected with each of pins of an OBD
port by a plurality of switches, through-holes one-to-one corresponding to the plurality of switches are provided on the circuit board and each of the plurality of switches comprise:
A first electric contact and a second electric contact, the first electric contact and the second electric contact are provided beside a corresponding through-hole, wherein the first electric contact is connected with a corresponding communication channel, and the second electric contact is connected with a corresponding pin;
A vertically movable column, wherein the column passes the through-hole, the column engages with the through-hole by sliding, an electric conduction piece is provided on a top portion of the column, which when moving downwards will electrically contact the first electric contact and the second electric contact, and a flexible self-resuming piece is provided between the electric conduction piece and the circuit board;
And a power for driving the column to move vertically.
A limiting piece is radially provided on a lower end of the column.
The power is an electromagnetic coil, wherein the electromagnetic coil is radially provided beside a lower end of the column and is fixed on the circuit board, the column is an insulated column and the electric conduction piece is of magnetic metal materials.
The electric conduction piece is made of steel.
Enable control of the electromagnetic coil is made by an MOS driver circuit.
The first electric contact and the second electric contact are semi-circular copper sheets, symmetrically provided beside the through-hole.
The electric conduction piece comprises a horizontal rod, and both ends of the rod extend vertically downwards and form contact terminals corresponding to the first electric contact and Date Recue/Date Received 2021-11-18 the second electric contact.
The flexible self-resuming piece is a spring, and the spring is sleeved over an upper end of the column.
The through-holes are distributed in a matrix.
In the present invention, communication channels of the vehicle diagnosis equipment can be switched accurately to corresponding pins as required, the communication channel switching circuit for vehicle diagnosis equipment is suitable for use in application conditions where each of the multiple communication channels work independently, and is characterized by advantages such as of small size, low cost, functioning stably, applicable to external circuits of high power and free from signal interference etc.
Brief description of drawings Hereinafter a detailed description will be given to the present invention based on appended drawings and embodiments:
Figure 1 is a structural diagram showing the present invention;
Figure 2 is a structural diagram showing the switch in the present invention;
Figure 3 is a structural diagram showing the MOS driver circuit according to the present invention; and Figure 4 is a structural top view showing the first electric contacts and the second electric contacts according to the present invention.
Embodiments As shown in figure 1 and figure 2, a communication channel switching circuit for vehicle diagnosis equipment, comprising a plurality of communication channels 110 provided on a circuit board, wherein each of the plurality of communication channels 110 is respectively connected with each of pins of an OBD port by a plurality of switches 120, through-holes 21 one-to-one corresponding to the plurality of switches are provided on the circuit board 20, each
3 Date Recue/Date Received 2021-11-18 of the plurality of switches 120 comprises a first electric contact 121, a second electric contact 122, a column 123, and a power 124.
Wherein, the through-holes are mechanical holes, with no up-and-down electrical communication.
The first electric contact 121 and the second electric contact 122 are provided beside a corresponding through-hole 21 on the circuit board 20, which is shown in figure 4, the first electric contact is connected with a corresponding communication channel and the second electric contact 122 is connected with a corresponding pin.
The column 123 can move vertically, passes the through-hole 21 and engages with the through-hole 21 by sliding, an electric conduction piece 125 is provided on a top portion of the column 123 which will contact electrically the first electric contact 121 and the second electric contact 122 when the column 123 is moved downwards, and a flexible self-resuming piece 126 is provided between the electric conduction piece 125 and the circuit board 20.
The power 124 is used to drive the column 123 to move up and down.
When the column 123 is in an initial position, the electric conduction piece 125 is above the first electric contact 121 and the second electric contact 122, during use, the power 124 drives the column 123 to move downwards from the initial position, and after the column 123 moves for a certain distance, the electric conduction piece 125 contacts and is in conduction with both the first electric contact 121 and the second electric contact 122, so that the first electric contact 121 contacts the second electric contact 122, and the current communication channel is in conduction with the corresponding pin, in the meantime, when the column 123 continues to move downwards, the flexible self-resuming piece 126 is compressed, so when it is necessary to disconnect the current communication channel and the corresponding pin, stop the power 124, and the column 123 will resume to the initial position upon action of the flexible self-resuming piece 126.
As shown in figure 1, when it is necessary to communicate a CAN_L
communication channel to a pin 1, actuate a switch corresponding to the through-hole at an upper left corner in the figure,
Wherein, the through-holes are mechanical holes, with no up-and-down electrical communication.
The first electric contact 121 and the second electric contact 122 are provided beside a corresponding through-hole 21 on the circuit board 20, which is shown in figure 4, the first electric contact is connected with a corresponding communication channel and the second electric contact 122 is connected with a corresponding pin.
The column 123 can move vertically, passes the through-hole 21 and engages with the through-hole 21 by sliding, an electric conduction piece 125 is provided on a top portion of the column 123 which will contact electrically the first electric contact 121 and the second electric contact 122 when the column 123 is moved downwards, and a flexible self-resuming piece 126 is provided between the electric conduction piece 125 and the circuit board 20.
The power 124 is used to drive the column 123 to move up and down.
When the column 123 is in an initial position, the electric conduction piece 125 is above the first electric contact 121 and the second electric contact 122, during use, the power 124 drives the column 123 to move downwards from the initial position, and after the column 123 moves for a certain distance, the electric conduction piece 125 contacts and is in conduction with both the first electric contact 121 and the second electric contact 122, so that the first electric contact 121 contacts the second electric contact 122, and the current communication channel is in conduction with the corresponding pin, in the meantime, when the column 123 continues to move downwards, the flexible self-resuming piece 126 is compressed, so when it is necessary to disconnect the current communication channel and the corresponding pin, stop the power 124, and the column 123 will resume to the initial position upon action of the flexible self-resuming piece 126.
As shown in figure 1, when it is necessary to communicate a CAN_L
communication channel to a pin 1, actuate a switch corresponding to the through-hole at an upper left corner in the figure,
4 Date Recue/Date Received 2021-11-18 apparently, it is possible to have a plurality of CAN_L communication channels to be in conduction with a plurality of pins with a plurality of switches.
In the present invention, it is possible to switch each of the communication channels of the vehicle diagnosis equipment accurately to a corresponding pin, and the communication channel switching circuit for vehicle diagnosis equipment is suitable for use in conditions where a plurality of communication channels work independently, and is characterized by advantages such as being of small size, low cost, functioning stably, suitable for use in external circuits of high power, and free from signal interference etc.
In the present embodiment, both the first electric contact 121 and the second electric contact 122 are semi-circular copper sheets, symmetrically provided surrounding the corresponding through-hole.
The electric conduction piece 125 comprises a horizontal rod 124a, and both ends of the rod 124a extend downwards vertically to form contact terminals 124b corresponding to the first electric contact 121 and the second electric contact 122.
Wherein, the flexible self-resuming piece 126 can be a spring, sleeved on an upper end portion of the column 123.
In the present embodiment, a limiting piece 127 is radially provided on a lower end of the column 123, the limiting piece 127 is of a horizontal rod shape, which will prevent departure of the column 123 from the circuit board under action of the flexible self-resuming piece 126 when moving upwards.
In the present embodiment, the power 124 is an electromagnetic coil L3, which is provided radially outside a lower part of the column 123, and fixed to the circuit board 20, correspondingly, the column 123 is an insulated column, and the electric conduction piece 125 is made of magnetic metal materials. When the electromagnetic coil is enabled, the electromagnetic coil will produce electromagnetic absorption force, absorbing the electric conduction piece 125 to move the column 123 downwards, and upon moving for a certain distance, the contact terminals 124b at both ends contact electrically the first electric contact
In the present invention, it is possible to switch each of the communication channels of the vehicle diagnosis equipment accurately to a corresponding pin, and the communication channel switching circuit for vehicle diagnosis equipment is suitable for use in conditions where a plurality of communication channels work independently, and is characterized by advantages such as being of small size, low cost, functioning stably, suitable for use in external circuits of high power, and free from signal interference etc.
In the present embodiment, both the first electric contact 121 and the second electric contact 122 are semi-circular copper sheets, symmetrically provided surrounding the corresponding through-hole.
The electric conduction piece 125 comprises a horizontal rod 124a, and both ends of the rod 124a extend downwards vertically to form contact terminals 124b corresponding to the first electric contact 121 and the second electric contact 122.
Wherein, the flexible self-resuming piece 126 can be a spring, sleeved on an upper end portion of the column 123.
In the present embodiment, a limiting piece 127 is radially provided on a lower end of the column 123, the limiting piece 127 is of a horizontal rod shape, which will prevent departure of the column 123 from the circuit board under action of the flexible self-resuming piece 126 when moving upwards.
In the present embodiment, the power 124 is an electromagnetic coil L3, which is provided radially outside a lower part of the column 123, and fixed to the circuit board 20, correspondingly, the column 123 is an insulated column, and the electric conduction piece 125 is made of magnetic metal materials. When the electromagnetic coil is enabled, the electromagnetic coil will produce electromagnetic absorption force, absorbing the electric conduction piece 125 to move the column 123 downwards, and upon moving for a certain distance, the contact terminals 124b at both ends contact electrically the first electric contact
5 Date Recue/Date Received 2021-11-18 121 and the second electric contact 122, so that the first electric contact 121 is in conduction with the second electric contact 122; and when the electromagnetic coil is not enabled, the column 123 will resume to the initial position upon action of the flexible self-resuming piece 126.
Specifically, the electric conduction piece 125 is made of steel, and can also be made of cobalt, nickel and other magnetic metal materials.
Wherein, as shown in figure 3, the electromagnetic coil is given enable control by an MOS driver circuit, specifically the enable control is done in a following manner: one end of the electromagnetic coil L3 is connected with a VCC (Volt Current Condenser) of the supply, another end thereof is connected with a collector of an MOS pipe 018, an emitter of the MOS pipe 018 is grounded, a base of the MOS pipe 018 is grounded via a resistor R51, and the base accesses switch signals via a resistor R50, the switch signals come from an MCU main control circuit of the vehicle diagnosis equipment, and the resistor R50 and the resistor R51 protect the MOS driver circuit.
When the MOS pipe 018 is conducted, the electromagnetic coil is enabled, and when the MOS
pipe 018 is closed, the electromagnetic coil is disabled.
Preferably, as shown in figure 1, in the present embodiment, the through-holes 21 are distributed in a matrix, and apparently, the present invention is not limited to the 5*5 matrix shown in the drawings.
However, those of ordinary skill in the art shall recognize that, the foregoing embodiments are only used to explain rather than limit the present invention, all changes and variations of the foregoing embodiments in substantial spirits of the present invention fall into scope of the appended claims.
Specifically, the electric conduction piece 125 is made of steel, and can also be made of cobalt, nickel and other magnetic metal materials.
Wherein, as shown in figure 3, the electromagnetic coil is given enable control by an MOS driver circuit, specifically the enable control is done in a following manner: one end of the electromagnetic coil L3 is connected with a VCC (Volt Current Condenser) of the supply, another end thereof is connected with a collector of an MOS pipe 018, an emitter of the MOS pipe 018 is grounded, a base of the MOS pipe 018 is grounded via a resistor R51, and the base accesses switch signals via a resistor R50, the switch signals come from an MCU main control circuit of the vehicle diagnosis equipment, and the resistor R50 and the resistor R51 protect the MOS driver circuit.
When the MOS pipe 018 is conducted, the electromagnetic coil is enabled, and when the MOS
pipe 018 is closed, the electromagnetic coil is disabled.
Preferably, as shown in figure 1, in the present embodiment, the through-holes 21 are distributed in a matrix, and apparently, the present invention is not limited to the 5*5 matrix shown in the drawings.
However, those of ordinary skill in the art shall recognize that, the foregoing embodiments are only used to explain rather than limit the present invention, all changes and variations of the foregoing embodiments in substantial spirits of the present invention fall into scope of the appended claims.
6 Date Recue/Date Received 2021-11-18
Claims (9)
1. A communicafion channel switching circuit for vehicle diagnosis equipment, comprising a plurality of communicafion channels provided on a circuit board, each of the plurality of communicafion channels is respecfively connected with each of pins of an OBD
port by a plurality of switches, through-holes one-to-one corresponding to the plurality of switches are provided on the circuit board and each of the plurality of switches comprise:
a first electric contact and a second electric contact, the first electric contact and the second electric contact are provided beside a corresponding through-hole, wherein the first electric contact is connected with a corresponding communication channel, and the second electric contact is connected with a corresponding pin;
a vertically movable column, wherein the column passes the through-hole, the column engages with the through-hole by sliding, an electric conduction piece is provided on a top portion of the column, which when moving downwards will electrically contact the first electric contact and the second electric contact, and a flexible self-resuming piece is provided between the electric conduction piece and the circuit board;
and a power for driving the column to move vertically.
port by a plurality of switches, through-holes one-to-one corresponding to the plurality of switches are provided on the circuit board and each of the plurality of switches comprise:
a first electric contact and a second electric contact, the first electric contact and the second electric contact are provided beside a corresponding through-hole, wherein the first electric contact is connected with a corresponding communication channel, and the second electric contact is connected with a corresponding pin;
a vertically movable column, wherein the column passes the through-hole, the column engages with the through-hole by sliding, an electric conduction piece is provided on a top portion of the column, which when moving downwards will electrically contact the first electric contact and the second electric contact, and a flexible self-resuming piece is provided between the electric conduction piece and the circuit board;
and a power for driving the column to move vertically.
2. The communication channel switching circuit for vehicle diagnosis equipment according to claim 1, wherein a limiting piece is radially provided on a lower end of the column.
3. The communication channel switching circuit for vehicle diagnosis equipment according to claim 1 or 2, wherein the power is an electromagnetic coil, wherein the electromagnetic coil is radially provided beside a lower end of the column and is fixed on the circuit board, the column is an insulated column and the electric conduction piece is of magnetic metal materials.
4. The communication channel switching circuit for vehicle diagnosis equipment according to claim 3, wherein the electric conduction piece is made of steel.
Date Recue/Date Received 2021-11-18 5. The communicafion channel switching circuit for vehicle diagnosis equipment according to
Date Recue/Date Received 2021-11-18 5. The communicafion channel switching circuit for vehicle diagnosis equipment according to
claim 5, wherein enable control of the electromagnefic coil is made by an MOS
driver circuit.
driver circuit.
6. The communicafion channel switching circuit for vehicle diagnosis equipment according to claim 5, wherein the first electric contact and the second electric contact are semi-circular copper sheets, symmetrically provided beside the through-hole.
7. The communication channel switching circuit for vehicle diagnosis equipment according to claim 6, wherein the electric conduction piece comprises a horizontal rod, and both ends of the rod extend vertically downwards and form contact terminals corresponding to the first electric contact and the second electric contact.
8. The communication channel switching circuit for vehicle diagnosis equipment according to claim 17, wherein the flexible self-resuming piece is a spring, and the spring is sleeved over an upper end of the column.
9. The communication channel switching circuit for vehicle diagnosis equipment according to claim 8, wherein the through-holes are distributed in a matrix.
Date Recue/Date Received 2021-11-18
Date Recue/Date Received 2021-11-18
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010804348.1A CN111897313B (en) | 2020-08-10 | 2020-08-10 | Communication channel switching circuit of vehicle diagnostic equipment |
| CN202010804348.1 | 2020-08-10 | ||
| PCT/CN2021/081604 WO2021218476A1 (en) | 2020-08-10 | 2021-03-18 | Communication channel switching circuit of vehicle diagnostic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3141188A1 true CA3141188A1 (en) | 2021-11-04 |
Family
ID=73228842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3141188A Abandoned CA3141188A1 (en) | 2020-08-10 | 2021-03-18 | Communication channel switching circuit for vehicle diagnosis equipment |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN111897313B (en) |
| AU (1) | AU2021265924A1 (en) |
| CA (1) | CA3141188A1 (en) |
| WO (1) | WO2021218476A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897313B (en) * | 2020-08-10 | 2021-11-16 | 上海星融汽车科技有限公司 | Communication channel switching circuit of vehicle diagnostic equipment |
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| CN207516795U (en) * | 2017-11-28 | 2018-06-19 | 叶懿 | A kind of automobile bus switching and the switching circuit of communication line |
| CN109683595A (en) * | 2019-02-21 | 2019-04-26 | 广州亚美信息科技有限公司 | A kind of the Self Matching method, apparatus and system of car OBD interface stitch |
| CN111897313B (en) * | 2020-08-10 | 2021-11-16 | 上海星融汽车科技有限公司 | Communication channel switching circuit of vehicle diagnostic equipment |
-
2020
- 2020-08-10 CN CN202010804348.1A patent/CN111897313B/en active Active
-
2021
- 2021-03-18 CA CA3141188A patent/CA3141188A1/en not_active Abandoned
- 2021-03-18 WO PCT/CN2021/081604 patent/WO2021218476A1/en active Application Filing
- 2021-03-18 AU AU2021265924A patent/AU2021265924A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU2021265924A1 (en) | 2022-02-24 |
| CN111897313A (en) | 2020-11-06 |
| CN111897313B (en) | 2021-11-16 |
| WO2021218476A1 (en) | 2021-11-04 |
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| EEER | Examination request |
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| FZDE | Discontinued |
Effective date: 20240501 |