Fault reporting device and vehicle
By designing a fault reporting device in the vehicle and reporting sensor fault information using an independent fault information transmission module, the problem of sensor fault failure cannot be reported in time is solved, and driving safety is improved.
Patent Information
- Application Number
- CN202421176097.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-27
AI Technical Summary
Sensor failures in existing vehicles cannot be reported in time, resulting in the loss of some obstacle detection function of ADAS in the advanced driving assistance system, affecting driving safety.
Design a fault reporting device, including a first power supply module, a device to be tested, a fault management module and a fault information transmission module, the fault management module detects the fault information of the device to be tested, and passes the fault information different from the data transmission channel of the device to be tested The transmission module reports fault information.
It realizes that in the case of abnormal sensors, the fault information can be reported in a timely and effective manner, which improves driving safety and avoids driving safety risks caused by sensor failure.
Smart Images
Figure CN222509328U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of vehicle technology, and in particular to a fault reporting device and a vehicle. Background Art
[0002] At present, in order to achieve more functions, vehicles are equipped with more sensors, such as LiDAR, millimeter wave radar, surround view, side view and front view CMOS (Complementary Metal Oxide Semiconductor) cameras. For example, an autonomous vehicle can drive automatically according to the signals detected by the sensor. If the sensor fails to report the fault in time after a fault occurs, it will cause the advanced driving assistance system ADAS to lose some obstacle detection functions, affecting driving safety. Utility Model Content
[0003] In order to overcome the problems existing in the related art, the present disclosure provides a fault reporting device and a vehicle.
[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a fault reporting device, the fault reporting device comprising: a first power supply module, a device under test, a fault management module and a fault information transmission module;
[0005] The first power supply module is used to be connected to a first power supply and to be connected to the device under test, and is used to use the first power supply to supply power to the device under test;
[0006] The fault management module is connected to the device under test, and is used to detect fault information of the device under test and report the fault information via the fault information transmission module. The fault information transmission module and the device under test have different data transmission channels.
[0007] Optionally, the fault reporting device further includes: a second power supply module connected to the fault management module, the second power supply module is different from the first power supply module;
[0008] The second power supply module is used to be connected to a second power supply so as to utilize the second power supply to supply power to the fault management module.
[0009] Optionally, the fault information transmission module is further used to be connected to a second power supply so as to utilize the second power supply to power the fault management module.
[0010] Optionally, the fault management module includes a fault detection unit and a fault reporting unit, and the fault detection unit is connected to the fault reporting unit;
[0011] The fault detection unit is connected to the device under test and the first power supply module respectively, and is used to detect fault information of the device under test and the first power supply module, and send the fault information to the fault reporting unit;
[0012] The fault reporting unit is connected to the fault information transmission module, and is used to receive the fault information and report the fault information via the fault information transmission module.
[0013] Optionally, the fault information transmission module includes a first filtering unit for filtering AC signals and a second filtering unit for filtering DC signals;
[0014] The first filtering unit is used to use the second power supply to power the fault management module;
[0015] The fault management module reports the fault information to the domain controller via the second filtering unit.
[0016] Optionally, the fault reporting device further includes a second voltage conversion unit; the first filtering unit includes an inductor branch and a filter capacitor, the inductor branch includes a plurality of inductors connected in series and a resistor connected in parallel with some of the inductors in the plurality of inductors;
[0017] The first end of the inductor branch is used to be connected to the domain controller, the second end of the inductor branch is connected to the first end of the filter capacitor and the second voltage conversion unit, and the second end of the filter capacitor is grounded;
[0018] The second filtering unit includes a differential positive terminal capacitor, a differential negative terminal capacitor and a first resistor;
[0019] The first end of the differential positive capacitor is connected to the first end of the inductor branch, and the second end of the differential positive capacitor is connected to the fault management module;
[0020] A first end of the differential negative capacitor is grounded via the first resistor, and a second end of the differential negative capacitor is connected to the fault management module.
[0021] Optionally, the fault management module includes a fault detection unit and a fault reporting unit;
[0022] The fault detection unit comprises a first detection circuit for detecting whether the first power supply module is faulty and a second detection circuit for detecting whether the device under test is faulty;
[0023] The fault reporting unit includes a fault information input interface and a fault information output interface, the fault information input interface is respectively connected to the first detection circuit and the second detection circuit, and the fault information output interface is respectively connected to the second end of the differential positive capacitor and the second end of the differential negative capacitor.
[0024] Optionally, the first power supply module includes an overvoltage and overcurrent detection unit and a first voltage conversion unit, the first detection circuit includes a first level conversion circuit, a second level conversion unit and a first logic gate circuit, the overvoltage and overcurrent detection unit is connected to the first input end of the first logic gate circuit via the first level conversion circuit, and the first voltage conversion unit is connected to the second input end of the first logic gate circuit via the second level conversion circuit;
[0025] The device under test includes a working circuit unit and a control unit, the second detection circuit includes a third level conversion circuit, a fourth level conversion unit and a second logic gate circuit, the working circuit unit is connected to the first input end of the second logic gate circuit via the third level conversion unit, and the control unit is connected to the second input end of the second logic gate circuit via the fourth level conversion unit;
[0026] The output end of the first logic gate circuit and the output end of the second logic gate circuit are connected to the fault information input interface;
[0027] The first logic gate circuit is used to input fault information of a first fault level to the fault information input interface when a voltage signal input at a first input end of the first logic gate circuit represents a fault of the overvoltage and overcurrent detection unit, and / or when a voltage signal input at a second input end of the first logic gate circuit represents a fault of the first voltage conversion unit;
[0028] The second logic gate circuit is used to input fault information of a second fault level to the fault information input interface when a voltage signal input at the first input end of the second logic gate circuit represents a fault of the working circuit unit, and / or when a pulse signal input at the second input end of the second logic gate circuit represents a fault of the control unit, the first fault level is higher than the second fault level.
[0029] Optionally, the fault reporting device further includes a switch circuit, and the switch circuit is located between the first power supply and the first power supply module;
[0030] The fault information output interface is further used to receive, via the second filtering unit, a control signal fed back by the domain controller based on the fault information;
[0031] The fault reporting unit further includes a control instruction output interface, which is connected to the switch circuit and is used to output a signal for controlling the switch circuit to be disconnected when the control signal indicates disconnecting the switch circuit.
[0032] Optionally, the switch circuit includes a first switch device, a P-type MOS tube, a second resistor, a third resistor and a first capacitor;
[0033] The source of the P-type MOS tube is connected to the first power supply, the drain of the P-type MOS tube is connected to the device under test, and the gate of the P-type MOS tube is grounded via the first switch device;
[0034] The first switch device is connected to the control instruction output interface via the second resistor, and the third resistor and the first capacitor are connected in parallel and grounded via the first switch device;
[0035] Wherein, when the control signal is used to indicate disconnection of the switch circuit, the first switch device is disconnected to disconnect the P-type MOS tube.
[0036] Optionally, the device under test is a sensor.
[0037] According to a second aspect of an embodiment of the present disclosure, a vehicle is provided, comprising a power supply and a fault reporting device as described in the first aspect of an embodiment of the present disclosure.
[0038] By adopting the above technical solution, an additional fault information transmission module that is different from the data transmission channel of the device under test is set up. In this way, after the fault information is detected, the fault management module reports the fault information via the fault information transmission module, and there is no need to report the fault information through the data transmission channel of the device under test. In this way, when reporting the fault information, there is no need to rely on the internal working state of the device under test, and the fault information can be reported in a timely and effective manner, thereby improving driving safety.
[0039] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0041] Figure 1 It is a block diagram of a fault reporting device in a related technology according to an exemplary embodiment.
[0042] Figure 2 The figure is a block diagram of a fault reporting device according to an exemplary embodiment.
[0043] Figure 3 The figure is a block diagram of another fault reporting device according to an exemplary embodiment.
[0044] Figure 4 The figure is a block diagram of another fault reporting device according to an exemplary embodiment.
[0045] Figure 5 The present invention is a circuit diagram of a fault reporting device according to an exemplary embodiment. DETAILED DESCRIPTION
[0046] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0047] The embodiments described in some embodiments of the present disclosure below do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0048] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.
[0049] In the related art, the power supply is used to supply power to the sensor (including the sensor internal circuit unit and the internal controller) and the fault detection unit. When the power supply is normal, the fault detection unit works to detect whether the sensor internal circuit unit has a fault, and in the event of a fault, the fault information is reported via the internal controller. For example, the fault detection unit reports the fault information via the internal controller and the Ethernet circuit unit. In addition, the internal controller also reports the sensor data via the Ethernet circuit unit. For example, Figure 1 FIG. 1 is a block diagram of a fault reporting device in a related technology according to an exemplary embodiment. Figure 1 As shown, the power supply is connected to the internal circuit unit, the internal controller and the fault detection unit respectively, and the fault detection unit reports the fault information via the internal controller and the Ethernet circuit unit when a fault is detected.
[0050] During the fault reporting process, the following conditions must be met: normal power supply, normal operation of the internal controller, and normal operation of the Ethernet circuit unit. In other words, fault reporting depends on the normal operation of the sensor. If the power supply, internal controller or Ethernet circuit unit is abnormal, the fault reporting function will fail.
[0051] In view of this, the present disclosure provides a fault reporting device and a vehicle, which are additionally provided with a fault information transmission module which is different from the data transmission channel of the device under test. After detecting the fault information, the fault management module reports the fault information through the fault information transmission module. In this way, when the device under test is abnormal, the fault reporting function can be realized through the fault information transmission module to improve driving safety.
[0052] Figure 2 FIG. 1 is a block diagram of a fault reporting device according to an exemplary embodiment. Figure 2 As shown, the fault reporting device 200 may include: a first power supply module 201 , a device under test 202 , a fault management module 203 , and a fault information transmission module 204 .
[0053] The first power supply module 201 is used to be connected to the first power supply 300 and to the device under test 202, and is used to use the first power supply 300 to power the device under test 202; the fault management module 203 is connected to the device under test 202, and is used to detect fault information of the device under test 202, and report the fault information via the fault information transmission module 204, and the fault information transmission module 204 and the device under test 202 have different data transmission channels.
[0054] For example, the device under test 202 may be any sensor, and the data transmission channel of the device under test 202 may be Figure 1 The Ethernet circuit unit shown.
[0055] It should be understood that the fault management module 203 may be any module with a fault detection function, and the technology of the fault management module 203 detecting the fault information of the device under test is a relatively mature technology, which is not specifically limited in the present disclosure.
[0056] By adopting the above technical solution, an additional fault information transmission module that is different from the data transmission channel of the device under test is set up. In this way, after the fault information is detected, the fault management module reports the fault information via the fault information transmission module, and there is no need to report the fault information through the data transmission channel of the device under test. In this way, when reporting the fault information, there is no need to rely on the internal working state of the device under test, and the fault information can be reported in a timely and effective manner, thereby improving driving safety.
[0057] In one embodiment, the first power supply module 201 can be used to power the fault management module 203, that is, the same power supply module is used to power the device under test 202 and the fault management module 203, so that the structure of the fault reporting device can be simplified. However, the first power supply module 201 needs to work normally in both the fault detection and fault reporting stages. If the first power supply module 201 is abnormal, the fault management module 203 will not be able to detect the fault normally and report the fault information.
[0058] In another embodiment, the fault reporting device may further include: a second power supply module, which is different from the first power supply module. The second power supply module is used to be connected to a second power supply, and the second power supply module is also connected to the fault management module to use the second power supply to power the fault management module.
[0059] For example, Figure 3 FIG. 1 is a block diagram of another fault reporting device according to an exemplary embodiment. Figure 3 As shown, the fault reporting device 200 may further include a second power supply module 206. The second power supply module 206 is connected to the second power supply 400 and the fault management module 203 respectively, so as to use the second power supply 400 to supply power to the fault management module 203.
[0060] The second power supply may be the same as or different from the first power supply, and this disclosure does not specifically limit this.
[0061] By adopting the above technical solution, different power supply modules are used to power the fault management module and the device under test respectively. In this way, when the power supply module supplying power to the device under test fails, it does not affect the fault management module to detect the fault and report the fault information. In this way, the fault information can be reported in a timely and effective manner, thereby improving driving safety.
[0062] In addition, in order to reduce the number of wiring harnesses and reduce costs, in the present disclosure, POC (Power Over Coaxial) technology can be used to use the same cable to achieve the fault information reporting function and the power supply function. For example, Figure 4 FIG. 1 is a block diagram of a fault reporting device according to an exemplary embodiment. Figure 4 As shown, the fault information transmission module 204 is also used to be connected to the second power supply 400 so as to utilize the second power supply 400 to supply power to the fault management module 203 .
[0063] like Figure 4As shown, the fault information transmission module 204 can be connected to the fault management module 203 and the second power supply 400 respectively to utilize the second power supply 400 to power the fault management module 203. The fault information transmission module 204 can also be connected to the fault management module 203 and the domain controller 500 so that the fault management module 203 reports fault information to the domain controller 500 via the fault information transmission module 204.
[0064] In the present disclosure, the fault management module 203 may include a fault detection unit 2031 and a fault reporting unit 2032, and the fault detection unit 2031 is connected to the fault reporting unit 2032. The fault detection unit 2031 is connected to the device under test 202 and the first power supply module 201, respectively, for detecting fault information of the device under test 202 and the first power supply module 201, and sending the fault information to the fault reporting unit 2032; the fault reporting unit 2032 is connected to the fault information transmission module 204, for receiving the fault information, and reporting the fault information via the fault information transmission module 204.
[0065] In addition, if Figure 4 As shown, the first power supply module 20 may include a first voltage conversion unit 2011 and an overvoltage and overcurrent detection unit 2012. The overvoltage and overcurrent detection unit 2012 is used to detect overcurrent and overvoltage anomalies of the first power supply. The first voltage conversion unit 2011 is connected to the overvoltage and overcurrent detection unit 2012 and is used to convert the voltage of the first power supply 300 into the voltage required for the device under test 201 to work. Figure 4 In the embodiment, the fault detection unit 2031 is connected to the first voltage conversion unit 2011 and the overvoltage and overcurrent detection unit 2012 respectively, and is used to detect whether the first voltage conversion unit 2011 and the overvoltage and overcurrent detection unit 2012 are faulty.
[0066] like Figure 4 As shown, the device under test 202 may include a working circuit unit 2021 and a control unit 2022. The control unit 2022 may be a controller of the device under test 202. The fault detection unit 2031 is connected to the working circuit unit 2021 and the control unit 2022, respectively, and is used to detect whether the working circuit unit 2021 and the control unit 2022 are faulty.
[0067] It should be understood that in the present disclosure, the dotted line represents a DC power transmission line, and the solid line represents an AC signal transmission line. Figure 4 In the embodiment, the control unit 2022 transmits the data of the device under test via the Ethernet circuit unit.
[0068] In order to facilitate those skilled in the art to better understand the fault reporting device provided by the present disclosure, the fault reporting device is described below with a complete circuit diagram.
[0069] Figure 5 FIG. 1 is a circuit diagram of a fault reporting device according to an exemplary embodiment. Figure 5 As shown, the fault information transmission module 204 may include a first filtering unit for filtering AC signals and a second filtering unit for filtering DC signals. The first filtering unit is used to use the second power supply 400 to power the fault management module 203, and the fault management module 203 reports the fault information to the domain controller 500 via the second filtering unit.
[0070] For example, the fault reporting device includes a second voltage conversion unit 205, and the second voltage conversion unit 205 is used to convert the voltage of the second power supply 400 into the voltage required by the fault management module 203. Figure 5 As shown, the first filtering unit is connected to the second voltage conversion unit 205, and is used to transmit the direct current signal to the second voltage conversion unit 205. The second voltage conversion unit 205 may be a DCDC converter.
[0071] The first filtering unit may include an inductor branch and a filter capacitor, wherein the inductor branch may include a plurality of inductors connected in series and a resistor connected in parallel with some of the inductors. The first end of the inductor branch is used to connect to the domain controller 500, the second end of the inductor branch is connected to the first end of the filter capacitor and the second voltage conversion unit 205, and the second end of the filter capacitor is grounded.
[0072] For example, the inductor branch may include an inductor L1, an inductor L2, an inductor L3 and an inductor L4 connected in series, a resistor R1 connected in parallel with the inductor L3, and a resistor R2 connected in parallel with the inductor L4. Among them, the resistor connected in parallel with the inductor serves as a device for stabilizing the operating frequency of the inductor and plays a filtering role. The number of inductors and the inductor parameters in the inductor branch are related to the channel bandwidth of the fault reporting unit. The filter capacitor may include a capacitor C1 and a capacitor C2 connected in parallel to form a filter network of a DC input circuit. Different capacitor parameter combinations are selected according to the DC noise frequency distribution after filtering by the first filter unit. The present disclosure does not limit the specific parameters of the filter capacitor.
[0073] The second filtering unit is used to filter the DC signal and transmit the AC signal between the domain controller 500 and the fault management module 203. The second filtering unit may include a differential positive capacitor C3, a differential negative capacitor C4 and a first resistor R3. The first end of the differential positive capacitor C3 is connected to the first end of the inductor branch, and the second end of the differential positive capacitor C3 is connected to the fault management module 203; the first end of the differential negative capacitor C4 is grounded via the first resistor R3, and the second end of the differential negative capacitor C4 is connected to the fault management module 203, so as to form a differential circuit.
[0074] For example, the first filter unit may be connected to one line of the coaxial cable, the second filter unit may be connected to another line of the coaxial cable, and the other end of the coaxial cable is connected to the second power supply 400 and the domain controller 500 respectively.
[0075] In addition, the fault detection unit may include a first detection circuit for detecting whether the first power supply module is faulty and a second detection circuit for detecting whether the device under test is faulty. The fault reporting unit includes a fault information input interface and a fault information output interface, the fault information input interface is respectively connected to the first detection circuit and the second detection circuit, and the fault information output interface is respectively connected to the second end of the differential positive capacitor and the second end of the differential negative capacitor.
[0076] The first power supply module 201 may include an overvoltage and overcurrent detection unit and a first voltage conversion unit. The first power supply module fault detection circuit includes a first level conversion circuit, a second level conversion unit and a first logic gate circuit. The overvoltage and overcurrent detection unit is connected to the first input end of the first logic gate circuit via the first level conversion circuit. The first voltage conversion unit is connected to the second input end of the first logic gate circuit via the second level conversion circuit. The output end of the first logic gate circuit is connected to the fault information input interface. The first logic gate circuit is used to input the voltage signal input at the first input end of the first logic gate circuit to represent the overvoltage and overcurrent detection unit fault, and / or, when the voltage signal input at the second input end of the first logic gate circuit represents the first voltage conversion unit fault, input the fault information of the first fault level to the fault information input interface.
[0077] like Figure 5 As shown, since the signals output by the overvoltage and overcurrent detection unit 2012 and the first voltage conversion unit 2011 are DC signals, the first level conversion circuit and the second level conversion circuit can both be resistor voltage divider networks or other level conversion circuits.
[0078] For example, in Figure 5 In the example, the first level conversion circuit includes resistors R4 and R5, and the second level conversion circuit includes resistors R6 and R7. The first end of resistor R4 is connected to the overvoltage and overcurrent detection unit 2012, the second end of resistor R4 is connected to the first end of resistor R5 and the first input end of the first logic gate circuit, and the second end of resistor R5 is grounded. The first end of resistor R6 is connected to the first voltage conversion unit 2011, the second end of resistor R6 is connected to the first end of resistor R7 and the second input end of the first logic gate circuit, and the second end of resistor R7 is grounded.
[0079] In one possible approach, Figure 5As shown, the first logic gate circuit may be an AND gate 1, and the first level conversion circuit inputs a high level signal to the first input terminal of the AND gate 1 when the overvoltage and overcurrent detection unit 2012 does not fail, and inputs a low level signal to the first input terminal of the AND gate 1 when the overvoltage and overcurrent detection unit 2012 fails. Similarly, the second level conversion circuit inputs a high level signal to the second input terminal of the AND gate 1 when the first voltage conversion unit 2011 does not fail, and inputs a low level signal to the second input terminal of the AND gate 1 when the first voltage conversion unit 2011 fails.
[0080] Correspondingly, when both input ends of the AND gate 1 are high-level signals, no information may be input to the fault reporting unit 2032, or information used to characterize that no fault has occurred in the first power supply module 201 may be input to the fault reporting unit 2032, and when either input end is a low-level signal, fault information is input to the fault reporting unit 2032.
[0081] The device under test includes a working circuit unit and a control unit, the second detection circuit includes a third level conversion circuit, a fourth level conversion unit and a second logic gate circuit, the working circuit unit is connected to the first input end of the second logic gate circuit via the third level conversion unit, the control unit is connected to the second input end of the second logic gate circuit via the fourth level conversion unit, and the output end of the second logic gate circuit is connected to the fault information input interface. The second logic gate circuit is used to input fault information of a second fault level to the fault information input interface when a voltage signal input at the first input end of the second logic gate circuit represents a fault in the working circuit unit, and / or when a pulse signal input at the second input end of the second logic gate circuit represents a fault in the control unit, the first fault level is higher than the second fault level.
[0082] Since the state signal output by the working circuit unit 2021 is a DC signal, and the state signal output by the control unit 2022 is an AC pulse signal, Figure 5 As shown, the third level conversion circuit can also be a resistor voltage divider network or other level conversion circuit. For example, the third level conversion circuit includes resistors R8 and R9, the first end of the resistor R8 is connected to the working circuit unit 2021, the second end of the resistor R8 is respectively connected to the first input end of the second logic gate and the first end of the resistor R9, and the second end of the resistor R9 is grounded. The fourth level conversion circuit may include a resistor R10 and a capacitor C5, the first end of the resistor R10 is connected to the control unit 2022, the second end of the resistor R10 is connected to the first input end of the second logic gate and one end of the capacitor C5, and the other end of the capacitor C5 is grounded.
[0083] In one possible approach, Figure 5As shown, the second logic gate circuit may be an AND gate 2, and the third level conversion circuit inputs a high level signal to the first input terminal of the AND gate 2 when the working circuit unit 2021 does not fail, and inputs a low level signal to the first input terminal of the AND gate 2 when the working circuit unit 2021 fails. Similarly, the fourth level conversion circuit inputs a high level signal to the second input terminal of the AND gate 2 when the control unit 2022 does not fail, and inputs a low level signal to the second input terminal of the AND gate 2 when the control unit 2022 fails.
[0084] Accordingly, when both input terminals of the AND gate 2 are high-level signals, no information may be input to the fault reporting unit 2032, or information used to characterize that no fault has occurred in the device under test 202 may be input to the fault reporting unit 2032, and when any input terminal is a low-level signal, fault information may be input to the fault reporting unit 2032.
[0085] Since other components may be damaged in addition to the failure of the first power supply module when an overcurrent or overvoltage fault occurs, in the present disclosure, faults may also be classified into levels. For example, when the first power supply module fails, fault information of a first fault level is reported, and when the device under test fails, fault information of a second fault level is reported. The first fault level is higher than the second fault level. In this way, when the domain controller receives the fault information, it can perform corresponding actions according to the fault level of the fault information to ensure power safety.
[0086] By adopting the above technical solution, fault levels can be divided, which makes it easier for the domain controller to perform different actions according to different fault levels, thereby improving the flexibility of fault reporting.
[0087] like Figure 5 As shown, the fault reporting unit 2032 can be a serializer of any model. The fault information input interface of the serializer may include an interface IO1 and an interface IO2, and the output end of gate 1 is connected to the interface IO1, and the output end of gate 2 is connected to the interface IO2. In addition, the serializer also includes a fault output interface SIOP and SION, the fault output interface SIOP is connected to the differential positive terminal capacitor C3, and the fault output interface SION is connected to the differential negative terminal capacitor C4. The serializer can read the fault information from the interface IO1 and the interface IO2, and transmit it to the domain controller 500 via the fault output interface SIOP, SION, the differential positive terminal capacitor C3, and the differential negative terminal capacitor C4.
[0088] In addition, the serializer may also perform data encoding and serialization on the fault information read from the interface IO1 and the interface IO2 and transmit the data to the remote deserializer. The remote deserializer deserializes the data and sends the fault information to the domain controller 500 .
[0089] In the present disclosure, the fault reporting device may further include a switch circuit, the switch circuit being located between the first power supply and the first power supply module. The fault information output interface is also used to receive a control signal from the domain controller based on the fault information feedback via the second filtering unit; the fault reporting unit also includes a control instruction output interface, the control instruction output interface is connected to the switch circuit, and is used to output a signal for controlling the switch circuit to disconnect when the control signal indicates disconnecting the switch circuit.
[0090] For example, Figure 5 As shown, the domain controller 500 can send a control signal to the fault information output interfaces SIOP and SION of the serializer via the differential positive capacitor C3 and the differential negative capacitor C4, and then the serializer decodes and parses the control signal, and controls the switch circuit to be turned on or off through the control instruction output interface IO3. For example, if the control signal sent by the domain controller 500 indicates disconnecting the switch circuit, the control instruction output interface IO3 outputs a signal for controlling the switch circuit to be disconnected.
[0091] It should be understood that whether the control instruction output interface IO3 outputs a high level signal to control the switch circuit to be disconnected or outputs a low level signal to control the switch circuit to be disconnected depends on the specific structure of the switch circuit.
[0092] In one possible approach, Figure 5 As shown, the switch circuit may include a first switch device, a P-type MOS tube PMOS, a second resistor R11, a third resistor R12 and a first capacitor C6. The source of the P-type MOS tube PMOS is connected to the first power supply 300, the drain of the P-type MOS tube PMOS is connected to the device under test 202, and the gate of the P-type MOS tube PMOS is grounded via the first switch device. The first switch device is connected to the control instruction output interface IO3 via the second resistor R11, and the third resistor R12 and the first capacitor C6 are connected in parallel and then grounded via the first switch device. When the control signal is used to represent the disconnection of the switch circuit, the first switch device is disconnected to disconnect the P-type MOS tube PMOS.
[0093] The first switch device may be any other device with a switch function, such as a triode, an optocoupler switch tube, a thyristor switch tube, an IGBT, etc. For example, the first switch device is an N-type MOS tube.
[0094] When the control signal sent by the domain controller 500 is a control signal for characterizing the disconnection of the switch circuit, the control instruction output interface IO3 of the serializer outputs a low-level signal, thereby controlling the first switch device NMOS tube to be disconnected. When the first switch device NMOS tube is disconnected, the PMOS tube is disconnected, thereby disconnecting the first power supply to power the first power supply module and the device under test.
[0095] Based on the same concept, the present disclosure also provides a vehicle, including a power supply and a fault reporting device provided by the present disclosure.
[0096] In addition, the word "exemplary" is used herein to indicate serving as an example, instance, or diagram. Any aspect or design described as "exemplary" in this article is not necessarily understood to be advantageous compared to other aspects or designs. On the contrary, the use of the word exemplary is intended to present concepts in a specific way. As used herein, the term "or" is intended to represent an inclusive "or" rather than an exclusive "or". That is, unless otherwise specified or clear from the context, "X applies A or B" is intended to represent any one of the natural inclusive arrangements. That is, if X applies A; X applies B; or X applies both A and B, "X applies A or B" is satisfied under any of the aforementioned examples. In addition, unless otherwise specified or clearly pointed to a singular form from the context, the articles "one" and "an" as used in this application and the appended claims are generally understood to mean "one or more".
[0097] Likewise, although the present disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art after reading and understanding the specification and drawings. The present disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components (e.g., elements, resources, etc.) described above, unless otherwise indicated, the terms used to describe such components are intended to correspond to any component (functionally equivalent) that performs the specific functions of the described components, even if the structure is not equivalent to the disclosed structure. In addition, although specific features of the present disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations as may be desired and beneficial to any given or specific application. In addition, with respect to "including", "having", "having", "having", or variations thereof used in a specific embodiment or claim, such terms are intended to be inclusive in a manner similar to the term "comprising".
[0098] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the description and practicing what is disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.
[0099] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A fault reporting device, characterized in that: The fault reporting device comprises: a first power supply module, a device under test, a fault management module and a fault information transmission module; The first power supply module is used to be connected to a first power supply and to be connected to the device under test, and is used to use the first power supply to supply power to the device under test; The fault management module is connected to the device under test, and is used to detect fault information of the device under test and report the fault information via the fault information transmission module. The fault information transmission module and the device under test have different data transmission channels.
2. The fault reporting device according to claim 1, characterized in that: The fault reporting device further includes: a second power supply module connected to the fault management module, the second power supply module being different from the first power supply module; The second power supply module is used to be connected to a second power supply so as to utilize the second power supply to supply power to the fault management module.
3. The fault reporting device according to claim 1, characterized in that: The fault information transmission module is also used to be connected to a second power supply so as to utilize the second power supply to supply power to the fault management module.
4. The fault reporting device according to claim 1, characterized in that: The fault management module includes a fault detection unit and a fault reporting unit, and the fault detection unit is connected to the fault reporting unit; The fault detection unit is connected to the device under test and the first power supply module respectively, and is used to detect fault information of the device under test and the first power supply module, and send the fault information to the fault reporting unit; The fault reporting unit is connected to the fault information transmission module, and is used to receive the fault information and report the fault information via the fault information transmission module.
5. The fault reporting device according to claim 3, characterized in that: The fault information transmission module includes a first filtering unit for filtering AC signals and a second filtering unit for filtering DC signals; The first filtering unit is used to use the second power supply to power the fault management module; The fault management module reports the fault information to the domain controller via the second filtering unit.
6. The fault reporting device according to claim 5, characterized in that: The fault reporting device further includes a second voltage conversion unit; the first filtering unit includes an inductor branch and a filter capacitor, the inductor branch includes a plurality of inductors connected in series and a resistor connected in parallel with some of the inductors in the plurality of inductors; The first end of the inductor branch is used to be connected to the domain controller, the second end of the inductor branch is connected to the first end of the filter capacitor and the second voltage conversion unit, and the second end of the filter capacitor is grounded; The second filtering unit includes a differential positive terminal capacitor, a differential negative terminal capacitor and a first resistor; The first end of the differential positive capacitor is connected to the first end of the inductor branch, and the second end of the differential positive capacitor is connected to the fault management module; A first end of the differential negative capacitor is grounded via the first resistor, and a second end of the differential negative capacitor is connected to the fault management module.
7. The fault reporting device according to claim 6, characterized in that: The fault management module includes a fault detection unit and a fault reporting unit; The fault detection unit comprises a first detection circuit for detecting whether the first power supply module is faulty and a second detection circuit for detecting whether the device under test is faulty; The fault reporting unit includes a fault information input interface and a fault information output interface, the fault information input interface is respectively connected to the first detection circuit and the second detection circuit, and the fault information output interface is respectively connected to the second end of the differential positive capacitor and the second end of the differential negative capacitor.
8. The fault reporting device according to claim 7, characterized in that: The first power supply module includes an overvoltage and overcurrent detection unit and a first voltage conversion unit, the first detection circuit includes a first level conversion circuit, a second level conversion circuit and a first logic gate circuit, the overvoltage and overcurrent detection unit is connected to the first input end of the first logic gate circuit via the first level conversion circuit, and the first voltage conversion unit is connected to the second input end of the first logic gate circuit via the second level conversion circuit; The device under test includes a working circuit unit and a control unit, the second detection circuit includes a third level conversion circuit, a fourth level conversion circuit and a second logic gate circuit, the working circuit unit is connected to the first input end of the second logic gate circuit via the third level conversion circuit, and the control unit is connected to the second input end of the second logic gate circuit via the fourth level conversion circuit; The output end of the first logic gate circuit and the output end of the second logic gate circuit are connected to the fault information input interface; The first logic gate circuit is used to input fault information of a first fault level to the fault information input interface when a voltage signal input at a first input end of the first logic gate circuit represents a fault of the overvoltage and overcurrent detection unit, and / or when a voltage signal input at a second input end of the first logic gate circuit represents a fault of the first voltage conversion unit; The second logic gate circuit is used to input fault information of a second fault level to the fault information input interface when a voltage signal input at the first input end of the second logic gate circuit represents a fault of the working circuit unit, and / or when a pulse signal input at the second input end of the second logic gate circuit represents a fault of the control unit, the first fault level is higher than the second fault level.
9. The fault reporting device according to claim 7, characterized in that: The fault reporting device further includes a switch circuit, and the switch circuit is located between the first power supply and the first power supply module; The fault information output interface is further used to receive, via the second filtering unit, a control signal fed back by the domain controller based on the fault information; The fault reporting unit further includes a control instruction output interface, which is connected to the switch circuit and is used to output a signal for controlling the switch circuit to be disconnected when the control signal indicates disconnecting the switch circuit.
10. The fault reporting device according to claim 9, characterized in that: The switch circuit includes a first switch device, a P-type MOS tube, a second resistor, a third resistor and a first capacitor; The source of the P-type MOS tube is connected to the first power supply, the drain of the P-type MOS tube is connected to the device under test, and the gate of the P-type MOS tube is grounded via the first switch device; The first switch device is connected to the control instruction output interface via the second resistor, and the third resistor and the first capacitor are connected in parallel and grounded via the first switch device; Wherein, when the control signal is used to indicate disconnection of the switch circuit, the first switch device is disconnected to disconnect the P-type MOS tube.
11. The fault reporting device according to any one of claims 1 to 10, characterized in that: The device under test is a sensor.
12. A vehicle, characterized in that: It comprises a power supply and a fault reporting device as claimed in any one of claims 1 to 11.