CN213149525U

CN213149525U - Signal conditioning system based on CAN bus

Info

Publication number: CN213149525U
Application number: CN202022366347.1U
Authority: CN
Inventors: 薄守龙; 庞长巍; 冯英本
Original assignee: Shanghai Yisu Information Technology Co ltd
Current assignee: Shanghai Yisu Information Technology Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-05-07
Anticipated expiration: 2030-10-22

Abstract

The utility model relates to a signal conditioning equipment technical field discloses a signal conditioning system based on CAN bus, including the conditioning box, the conditioning box is inside to be provided with circuit board and a plurality of signal conditioning board, seted up a plurality of first plug connectors on the preceding terminal surface of circuit board, the quantity of first plug connector is the same with the quantity of signal conditioning board, seted up the wiring mouth on the rear end face of circuit board, all be provided with microprocessor, wiring board, conditioning circuit and second plug connector on the signal conditioning board, microprocessor is respectively with wiring board, conditioning circuit and second plug connector electric connection together, the setting of second plug connector suits with first plug connector, the second plug connector is used for meeting with first plug connector, the signal conditioning board is connected and then connects on the circuit board through second plug connector and first plug connector; the utility model has the characteristics of the system flexibility ratio is high, need not the manual work and carry out hardware operation, convenient to use.

Description

Signal conditioning system based on CAN bus

Technical Field

The utility model relates to a signal conditioning equipment technical field, concretely relates to signal conditioning system based on CAN bus.

Background

With the higher performance requirements of people on electric control products, the safety, reliability and economy of the products are more and more emphasized, the functions are increasingly increased, the trend is particularly obvious in the field of traffic related to safety, at present, a common controller comprises a computing core CPU, a digital interface, an analog interface, a driving interface, a bus interface and the like, information of the interfaces is simulated and injected into the controller, and therefore whether the software logic and hardware functions of the controller are normal is tested.

However, most of the signal specifications sent and received by a common signal simulation system are general specifications and cannot correspond to the interface specifications of controllers applied in different fields, so that a signal conditioning system needs to be installed in the middle, the current conditioning system is mostly realized by a single board or a single board matched with a plug-in box, different signal conditioning boards are not connected with each other, when a single board is designed for a part of systems, the reusability of functions is considered, but when the functions are switched, manual adjustment is performed in a mode of jumping caps, dialing or back boards, and when the tested controllers are replaced, the working mode of each board needs to be adjusted manually.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a signal conditioning system based on CAN bus.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a signal conditioning system based on CAN bus which characterized in that: comprises a conditioning box body with an open front end face, a circuit board and a plurality of signal conditioning boards are arranged in the conditioning box body, the circuit board is horizontally and longitudinally arranged in the conditioning box body, a plurality of first plug connectors are arranged on the front end face of the circuit board, the number of the first plug connectors is the same as that of the signal conditioning boards, wiring ports are arranged on the rear end face of the circuit board, a microprocessor and a wiring board are arranged on each signal conditioning board, the conditioning circuit is used for conditioning signals, the conditioning circuit on each signal conditioning board has different functions, the second plug connector is arranged to be matched with the first plug connector, the second plug connector is used for being connected with the first plug connector, and the signal conditioning board is connected with the first plug connector through the second plug connector and then connected to the circuit board.

Preferably, the number of the wiring ports is 2, the wiring ports are symmetrically arranged on the rear end face of the circuit board, one wiring port is used for being connected with an external CAN bus, and the other wiring port is used for being connected with an external power supply bus.

Preferably, a wire arranging space is reserved between the rear end face of the circuit board and the inner wall of the rear end wall of the conditioning box body.

Preferably, each signal conditioning board is further provided with a front panel, the front panel is arranged on the end part of the signal conditioning board, which is not connected with the circuit board, the front end surface of the front panel is provided with an indicator light, and the indicator light is electrically connected with the microprocessor.

Preferably, the rear end face of the circuit board is also provided with a code number plate.

Preferably, the rear end face of the conditioning box body is provided with an operation frame which penetrates through the rear end face of the conditioning box body, and the shape, size and position of the operation frame are matched with the circuit board.

Compare prior art, the utility model has the advantages that:

the utility model integrates a microprocessor, a wiring board, a conditioning circuit and a second plug connector on each signal conditioning board, and a wiring port is arranged on the circuit board and is used for being connected with an upper computer through being communicated with a CAN bus so as to receive a control instruction sent by the upper computer, when the function needs to be switched, the function does not need to be switched manually, only the upper computer needs to send a switching instruction, the microprocessor on each signal conditioning board identifies the function instruction to be switched, compares the function instruction with the function of the conditioning circuit corresponding to the microprocessor, judges whether the function instruction is consistent or not, the consistent signal conditioning board starts to work, the inconsistent signal conditioning board stops working, thereby automatically completing the switching, when the monitored controller is replaced, the microprocessor is accessed into the tested controller of the wiring board through identification so as to convert the working mode of the signal conditioning board, compared with the prior art, the method has the advantages of high system flexibility, no need of manual hardware adjustment and convenient use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a block diagram of the system of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a schematic structural view of a signal conditioning board according to the present invention;

fig. 5 is a front view of the circuit board of the present invention.

Reference numerals: 1. a conditioning box body; 2. a circuit board; 3. a signal conditioning board; 4. a first connector; 5. a wiring port; 6. a microprocessor; 7. a wiring board; 8. a conditioning circuit; 9. a second plug connector; 10. a CAN bus; 11. a power supply bus; 12. a wire arranging space; 13. a front panel; 14. a code number plate; 15. and (5) operating the frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example (b): referring to fig. 1 to 5, the embodiment provides a signal conditioning system based on a CAN bus 10, which includes a conditioning box 1 with an open front end face, a circuit board 2 and a plurality of signal conditioning boards 3 are arranged inside the conditioning box 1, the circuit board 2 is horizontally and longitudinally arranged in the conditioning box 1, the circuit board 2 is arranged close to the rear end of the conditioning box 1, a wire arranging space 12 is left between the rear end face of the circuit board 2 and the inner wall of the rear end wall of the conditioning box 1, and the wire arranging space 12 is used for facilitating later wiring and wire arranging work; the wiring mouth 5 has been seted up on circuit board 2's the rear end face, in this embodiment, the quantity of wiring mouth 5 is 2, wiring mouth 5 is the symmetry setting on circuit board 2's rear end face, one of them wiring mouth 5 is used for being connected with external CAN bus 10, another wiring mouth 5 is used for being connected with external power supply bus 11, circuit board 2 is connected with external host computer communication through wiring mouth 5 of being connected with external CAN bus 10, circuit board 2 is in the same place through wiring mouth 5 of being connected with external power supply bus 11 with external power supply electrical connection.

The front end face of the circuit board 2 is provided with a plurality of first plug connectors 4, the number of the first plug connectors 4 is the same as that of the signal conditioning board 3, and the positions of the first plug connectors 4 are distributed at the positions of the signal conditioning board 3 and are adapted to the positions of the first plug connectors 4; each signal conditioning board 3 is provided with a microprocessor 6, a wiring board 7, a conditioning circuit 8 and a second plug connector 9, the microprocessor 6 is respectively electrically connected with the wiring board 7, the conditioning circuit 8 and the second plug connector 9, the wiring board 7 is used for connecting external wiring harnesses and is connected with an external measured controller and a real-time simulation system, so that information intercommunication with the external measured controller and the real-time simulation system is realized, the conditioning circuit 8 is used for conditioning signals, the conditioning circuit 8 arranged on each signal conditioning board 3 has different functions, so that the functions implemented by each signal conditioning board 3 are different, the second plug connector 9 is adapted to the first plug connector 4, the second plug connector 9 is used for being connected with the first plug connector 4, the signal conditioning board 3 is connected with the first plug connector 4 through the second plug connector 9 and then connected on the circuit board 2, the microprocessor 6 can identify the instruction transmitted to the circuit board 2 through the connection of the second plug connector 9 and the first plug connector 4, adjust the working state of the signal conditioning board 3 according to the identified instruction, and monitor the working state of the signal conditioning board 3 through the microprocessor 6.

Furthermore, each signal conditioning board 3 is also provided with a front panel 13, the front panel 13 is arranged on the end part of the signal conditioning board 3 which is not connected with the circuit board 2, the front end surface of the front panel 13 is provided with an indicator light, the indicator light is electrically connected with the microprocessor 6, the indicator light is used for making different light prompts according to the instruction of the microprocessor 6, for example, when the working state of the signal conditioning board 3 is normal, the signal conditioning board 3 is bright green, and when the working state of the signal conditioning board 3 is abnormal, the signal conditioning board 3 is bright red, etc.; thereby being convenient for external users to know the specific working state of the signal conditioning plate 3.

Furthermore, a code number plate 14 is further arranged on the rear end face of the circuit board 2, and the code number plate 14 is used for distinguishing each conditioning box body 1 used in the same bus, namely numbering the conditioning box bodies 1, so that management is convenient.

Furthermore, an operation frame 15 penetrating through the rear end face of the conditioning case body 1 is arranged on the rear end face of the conditioning case body 1, the shape, size and position of the operation frame 15 are matched with those of the circuit board 2, and an external user can insert and connect a circuit and the like on the circuit board 2 by penetrating through the operation frame 15.

The working principle of the utility model is that when the function needs to be switched, the user sends a switching instruction through the upper computer, the switching instruction enters the circuit board 2 through the transmission of the CAN bus 10 and the wiring port 5 and is received by each signal conditioning board 3 on the circuit board 2, the microprocessor 6 on each signal conditioning board 3 identifies the function instruction to be switched, and the function instruction is matched with the function of the corresponding conditioning circuit 8 to be compared, whether the function instruction is matched is judged, the conditioning circuit 8 matched with the function instruction starts to work under the action of the microprocessor 6 on the same signal conditioning board 3, the conditioning circuit 8 not matched with the function instruction stops working under the action of the microprocessor 6 on the same signal conditioning board 3, so as to automatically complete the switching, when the measured controller is replaced, the microprocessor 6 is connected into the measured controller of the wiring board 7 through identification so as to switch the working mode of the signal conditioning board 3, so as to adapt to different tested controllers.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above is only the typical example of the utility model, in addition, the utility model can also have other multiple concrete implementation manners, and the technical scheme that all adopt equivalent replacement or equivalent transform to form all falls within the scope of the utility model.

Claims

1. A signal conditioning system based on a CAN bus (10), characterized by: the conditioning box comprises a conditioning box body (1) with an open front end face, a circuit board (2) and a plurality of signal conditioning boards (3) are arranged in the conditioning box body (1), the circuit board (2) is horizontally and longitudinally arranged in the conditioning box body (1), a plurality of first plug connectors (4) are arranged on the front end face of the circuit board (2), the number of the first plug connectors (4) is the same as that of the signal conditioning boards (3), a wiring port (5) is formed in the rear end face of the circuit board (2), each signal conditioning board (3) is provided with a microprocessor (6), a wiring board (7), a conditioning circuit (8) and a second plug connector (9), the microprocessor (6) is respectively and electrically connected with the wiring board (7), the conditioning circuit (8) and the second plug connector (9), the wiring board (7) is used for connecting with external wiring harnesses, and the conditioning circuit (8) is used for conditioning signals, the function of the conditioning circuit (8) arranged on each signal conditioning board (3) is different, the second plug connector (9) is arranged to be matched with the first plug connector (4), the second plug connector (9) is used for being connected with the first plug connector (4), and the signal conditioning board (3) is connected with the first plug connector (4) through the second plug connector (9) and then is connected to the circuit board (2).

2. A CAN-bus (10) -based signal conditioning system according to claim 1, characterized in that: the quantity of wiring mouth (5) is 2, and wiring mouth (5) are the symmetry setting on the rear end face of circuit board (2), and one of them wiring mouth (5) are used for being connected with external CAN bus (10), and another wiring mouth (5) are used for being connected with external power supply bus (11).

3. A CAN-bus (10) -based signal conditioning system according to claim 1, characterized in that: and a wire arranging space (12) is reserved between the rear end face of the circuit board (2) and the inner wall of the rear end wall of the conditioning box body (1).

4. A CAN-bus (10) -based signal conditioning system according to claim 1, characterized in that: each signal conditioning board (3) is also provided with a front panel (13), the front panel (13) is arranged on the end part of the signal conditioning board (3) which is not connected with the circuit board (2), the front end surface of the front panel (13) is provided with an indicator light, and the indicator light is electrically connected with the microprocessor (6).

5. A CAN-bus (10) -based signal conditioning system according to claim 1, characterized in that: and a code number plate (14) is also arranged on the rear end face of the circuit board (2).

6. A CAN-bus (10) -based signal conditioning system according to claim 1, characterized in that: an operation frame (15) penetrating through the rear end face of the conditioning box body (1) is arranged on the rear end face of the conditioning box body (1), and the shape, size and position of the operation frame (15) are adapted to the circuit board (2).