Multi-channel controller applied to automobile OTA test

Abstract

The utility model belongs to the technical field of automobile testing, and particularly relates to a multi-channel controller applied to an automobile OTA test, a microprocessor module is electrically connected with a crystal oscillator circuit, a reset circuit, a download interface circuit, a power supply module, an isolation module and a communication module respectively, the isolation module is electrically connected with a relay matrix module through a driving module, and the relay matrix module is electrically connected with the reset circuit. The power supply module is electrically connected with the isolation module and the driving module; each row of node relays of the relay matrix module are connected with a corresponding CAN network, and each column of node relays of the relay matrix module are connected with a corresponding vehicle-mounted electronic control unit. According to the controller, multi-vehicle-type topology fast switching can be achieved, and compatibility of multiple OTA platforms is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile test technology, especially relate to a kind of multi-channel controller applied to automobile OTA test. BACKGROUND

[0002] Currently, OTA automation test scheme can only carry out automation test to one vehicle model at the same time, when carrying out new research and development project, it needs to be reconnected, which leads to the old vehicle model cannot be tested, in addition, the same platform different vehicle model reform harness consumes time and energy, and there is the risk of harness reform error, and increasing equipment investment brings huge financial pressure to project. INVENTION CONTENTS

[0003] The utility model mainly aims at solving the problems in prior art, provide a kind of multi-channel controller applied to automobile OTA test, the controller can realize the topology of multiple vehicle models Quick switching, multiple OTA platform compatibility.

[0004] The utility model solves the technical problem using the following technical scheme: a kind of multi-channel controller applied to automobile OTA test, including microprocessor module, isolation module, drive module, relay matrix module, power module, communication module, crystal oscillator circuit, reset circuit, download interface circuit, the microprocessor module is respectively electrically connected crystal oscillator circuit, reset circuit, download interface circuit, power module, isolation module, communication module, the isolation module is connected relay matrix module by drive module, the power module is connected isolation module, drive module;

[0005] Each row node relay of the relay matrix module is connected with corresponding CAN network, and each column node relay of the relay matrix module is connected with corresponding vehicle-mounted electronic control unit.

[0006] Further, the power module includes 12V to 5V circuit, 5V to 3.3V circuit, and the 12V to 5V circuit is electrically connected with the 5V to 3.3V circuit.

[0007] Further, the microprocessor module uses MC9S12DG256MFUE type chip, the relay matrix module uses G3MB-202P12V type relay, and the communication module uses VN1640 type chip.

[0008] The utility model has the advantages that:

[0009] The relay matrix module of the utility model connects corresponding CAN network through each row node relay, connects corresponding vehicle-mounted electronic control unit through each column node relay of the relay matrix module, connects all electronic control units on the vehicle to the multi-channel controller, ensures that the switching of all electronic control units is controlled by the multi-channel controller. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the principle schematic drawing of the multi-channel controller applied to the automobile OTA test of the utility model.

[0011] Figure 2 It is the circuit diagram of the microprocessor module of the utility model.

[0012] Figure 3 It is the circuit diagram of the communication module of the utility model.

[0013] Figure 4 It is the circuit diagram of the power module of the utility model.

[0014] Figure 5 It is the circuit diagram of the relay matrix module of the utility model.

[0015] Figure 6 It is the principle schematic drawing of the relay matrix module of the utility model.

[0016] Figure 7 It is the circuit diagram of the download interface circuit of the utility model.

[0017] Figure 8 It is the circuit diagram of the crystal oscillator circuit of the utility model.

[0018] Figure 9 It is the circuit diagram of the reset circuit of the utility model.

[0019] Figure 10 It is the circuit diagram of the isolation module of the utility model.

[0020] Figure 11 It is the circuit diagram of the drive module of the utility model. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] As shown in Figures 1 to 11 The present application provides a kind of multi-channel controller applied to automobile OTA test, including microprocessor module, isolation module, drive module, relay matrix module, power module, communication module, crystal oscillator circuit, reset circuit, download interface circuit, microprocessor module is electrically connected crystal oscillator circuit, reset circuit, download interface circuit, power module, isolation module, communication module respectively, isolation module is electrically connected relay matrix module by drive module, power module is electrically connected isolation module, drive module;

[0025] Each row node relay of relay matrix module is connected with corresponding CAN network, and each column node relay of relay matrix module is connected with corresponding vehicle-mounted electronic control unit.

[0026] Further, the power module includes a 12V-to-5V circuit and a 5V-to-3.3V circuit, and the 12V-to-5V circuit is electrically connected to the 5V-to-3.3V circuit.

[0027] Further, the microprocessor module adopts a chip of model MC9S12DG256MFUE, the relay matrix module adopts a relay of model G3MB-202P12V, and the communication module adopts a chip of model VN1640.

[0028] As shown in Figure 6 each row of node relays of the relay matrix module is connected with a corresponding CAN network, and each column of node relays of the relay matrix module is connected with a corresponding electronic control unit (ECU) of the vehicle, the CAN network includes CAN network 1, CAN network 2, CAN network 3, CAN network 4, and CAN network 5, K11, K12, …, and K5n are node relays, and ECU1, ECU2, …, and ECUn are electronic control units of the vehicle.

[0029] Embodiment

[0030] After the controller is started, the power module supplies power to the microprocessor module, the isolation module, and the driving module, as shown in Figure 6 each row of node relays of the relay matrix module is connected with a corresponding CAN network, and each column of node relays of the relay matrix module is connected with a corresponding electronic control unit (ECU) of the vehicle, all electronic control units (ECUs) of the vehicle are connected to the multi-channel controller, and the switching of all electronic control units (ECUs) of the vehicle is controlled by the multi-channel controller. When the switching channel, the microprocessor module receives a control instruction sent by a PC through the communication module, controls the node relays of the relay matrix module to be attracted or disconnected through the isolation module and the driving module, and realizes the access and disconnection of the CAN communication of the electronic control unit (ECU) of the vehicle. When it is needed to connect ECU2 to CAN network 3, the node relay K32 needs to be controlled to be attracted, and each column of node relays can only close one channel at the same time.

[0031] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A multi-channel controller for automotive OTA testing, characterized in that: It includes a microprocessor module, an isolation module, a driver module, a relay matrix module, a power supply module, a communication module, a crystal oscillator circuit, a reset circuit, and a download interface circuit. The microprocessor module is electrically connected to the crystal oscillator circuit, the reset circuit, the download interface circuit, the power supply module, the isolation module, and the communication module. The isolation module is electrically connected to the relay matrix module through the driver module. The power supply module is electrically connected to the isolation module and the driver module. Each row of relay nodes in the relay matrix module is connected to the corresponding CAN network, and each column of relay nodes in the relay matrix module is connected to the corresponding vehicle electronic control unit.

2. The multi-channel controller for automotive OTA testing according to claim 1, characterized in that: The power module includes a 12V to 5V circuit and a 5V to 3.3V circuit, with the 12V to 5V circuit electrically connected to the 5V to 3.3V circuit.

3. The multi-channel controller for automotive OTA testing according to claim 1, characterized in that: The microprocessor module uses the MC9S12DG256MFUE chip, the relay matrix module uses the G3MB-202P12V relay, and the communication module uses the VN1640 chip.

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