CN116165568B - Power supply voltage monitoring system, method, vehicle machine and storage medium - Google Patents
Power supply voltage monitoring system, method, vehicle machine and storage medium Download PDFInfo
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Abstract
A power supply voltage monitoring system, a method, a vehicle machine and a storage medium, wherein the power supply voltage monitoring system comprises: an abnormality identifying unit, a detecting unit, and at least two power ICs. The detection unit is connected with the at least two power ICs, and is used for acquiring the state information of the at least two power ICs and generating a voltage monitoring value according to the state information; and the abnormality identification unit is connected with the detection unit and is used for comparing the voltage monitoring value with a plurality of abnormality reference values and identifying abnormal power ICs in the at least two power ICs. The power supply voltage monitoring system can monitor whether the power supply voltage of each branch in the system is abnormal in real time and flexibly, improves the safety protection performance of products, is particularly suitable for a more complex hardware system, can effectively save the design cost of hardware, and is beneficial to controlling the area of a PCB and the communication pin requirements of a main control IC.
Description
Technical Field
The present disclosure relates to the field of automotive electronics, and in particular, to a power supply voltage monitoring system, a power supply voltage monitoring method, a vehicle, and a storage medium.
Background
All peripheral modules running on a complete hardware system frame need to manage the power supply voltage, report the collected information to a main control IC (Integrated Circuit ), and effectively process abnormal power supply of the equipment so as to ensure the normal running of each system. With the development of the electronic industry, taking automotive electronics as an example, the safety requirements of systems such as intelligent cabins, meters, ADAS (Advanced Driving Assistance System ) and the like are increasing. It becomes more and more difficult to rapidly and effectively monitor and diagnose the information of each power supply voltage in the system to ensure the safety of the system.
In the related art, a hardware system mostly adopts some Power Monitor ICs (Power Monitor ICs) to detect a Power supply voltage. However, for a complicated hardware system, the Power supply voltage branches are too many to share, and many Power Monitor ICs are required to Monitor the Power supply condition of each branch, so that not only the material cost is increased, but also the area of a PCB (Printed Circuit Board ) is increased, and the communication pin requirement of the main control IC is increased.
Disclosure of Invention
In order to solve the defects existing in the prior art, the purpose of the application is to provide a power supply voltage monitoring system, a power supply voltage monitoring method, a vehicle computer and a storage medium, which can monitor whether the power supply voltage of each branch in the system is abnormal in real time and flexibly, improve the safety protection performance of products, are particularly suitable for more complex hardware systems, can effectively save the design cost of hardware, and are beneficial to controlling the area of a PCB and the communication pin requirements of a main control IC.
To achieve the above object, the present application provides a power supply voltage monitoring system, including:
at least two power ICs;
the detection unit is connected with the at least two power ICs, and is used for acquiring state information of the at least two power ICs and generating a voltage monitoring value according to the state information;
and the abnormality identification unit is connected with the detection unit and is used for comparing the voltage monitoring value with a plurality of abnormality reference values to identify an abnormal power supply IC in the at least two power supply ICs.
Further, the detection unit includes: a single abnormality detection circuit that detects the presence of a single abnormality,
at least two test ends of the power supply IC are connected with good power supply output ends of the at least two power supply ICs in a one-to-one correspondence manner;
the output end of the device is connected with the first input end of the abnormality identification unit;
the single abnormality monitoring circuit is configured to output a first voltage monitoring value to the abnormality identifying unit, so that the abnormality identifying unit compares the first voltage monitoring value with a plurality of first abnormality reference values, and identifies one abnormal power supply IC of the at least two power supply ICs.
Further, the single anomaly detection circuit,
the output end of the power supply circuit is connected with the power supply voltage through a first resistor and is grounded through a plurality of second resistors connected in series;
at least two test ends of the test circuit are respectively connected between different adjacent second resistors.
Further, the detection unit includes: a multi-anomaly detection circuit that detects the presence of a plurality of anomalies,
at least two test ends of the power supply IC are connected with good power supply output ends of the at least two power supply ICs in a one-to-one correspondence manner;
the output end of the device is connected with the second input end of the abnormality identification unit;
the multi-abnormality detection circuit is configured to output a second voltage monitor value to the abnormality identification unit, so that the abnormality identification unit compares the second voltage monitor value with a plurality of second abnormality reference values, and identifies at least two abnormal power supply ICs among the at least two power supply ICs.
Furthermore, the output end of the multi-abnormality detection circuit is connected with the power supply voltage through a third resistor, and is correspondingly connected with at least two testing ends of the multi-abnormality detection circuit through at least two fourth resistors connected in parallel, and the resistance values of the at least two fourth resistors are different.
Further, the multiple anomaly detection circuit comprises at least two multiple anomaly detection sub-circuits with the same configuration;
the multiple anomaly detection sub-circuit,
at least two test ends of the power supply IC are correspondingly connected with good power supply output ends of at least two power supply ICs one by one;
the output end of the device is connected with the corresponding second input end of the abnormality identification unit;
the multi-abnormality detection sub-circuit is configured to output two second voltage monitoring values to the abnormality identification unit, so that the abnormality identification unit compares the two second voltage monitoring values with the plurality of second abnormality reference values, and identifies at least two abnormal power ICs from the at least two power ICs.
Further, the system further comprises: an abnormality reporting unit for reporting the abnormality of the operation unit,
the input end of the device is connected with the output end of the abnormality identification unit;
at least two test ends of the power supply IC are connected with the voltage output ends of the at least two power supply ICs in a one-to-one correspondence manner;
the output end of the abnormal recognition unit is connected with the third input end of the abnormal recognition unit;
the abnormality reporting unit is used for obtaining the abnormal voltage value of the abnormal power supply IC and reporting the abnormal voltage value to the abnormality identifying unit.
Further, the abnormality reporting unit includes a change-over switch, at least two fifth resistors and at least two sixth resistors, which are arranged corresponding to the at least two power ICs;
the input end of the change-over switch is connected with the output end of the abnormality identification unit;
the at least two channel control ends of the change-over switch are connected with the power output end of the corresponding power IC through the corresponding fifth resistor and are grounded through the corresponding sixth resistor;
the output end of the change-over switch is connected with the third input end of the abnormality identification unit.
In order to achieve the above object, the present application further provides a power supply voltage monitoring method, which is applied to the power supply voltage monitoring system as described above, and the method includes:
the detection unit acquires state information of the at least two power ICs;
the detection unit generates a voltage monitoring value according to the state information;
the abnormality identifying unit compares the voltage monitor value with a plurality of abnormality reference values, and identifies an abnormal power supply IC among the at least two power supply ICs.
Further, the detection unit comprises a single abnormality detection circuit and a multiple abnormality detection circuit; the method comprises the following steps:
the single anomaly detection circuit generates a first voltage monitoring value according to the state information;
in response to the first voltage monitor value being equal to a normal reference value, the abnormality identifying unit determines that the at least two power ICs are both in a normal state;
in response to the first voltage monitor value being equal to a first abnormality reference value, the abnormality identifying unit identifies one of the at least two power supply ICs based on the first abnormality reference value.
Still further, the method further comprises:
in response to the first voltage monitor value not being equal to the normal reference value and not being equal to any one of the first abnormal reference values, the multiple abnormality detection circuit generates a second voltage monitor value according to the state information;
in response to the second voltage monitor value being equal to a second abnormality reference value, the abnormality identifying unit identifies at least two abnormal power supply ICs among the at least two power supply ICs based on the second abnormality reference value.
Further, the power supply voltage monitoring system also comprises an abnormality reporting unit; the method further comprises the steps of:
the abnormality reporting unit obtains an abnormal voltage value of the abnormal power supply IC and reports the abnormal voltage value to the abnormality identifying unit.
In order to achieve the above object, the present application provides a vehicle machine, including: a supply voltage monitoring system as described above.
To achieve the above object, the present application provides a computer-readable storage medium having stored thereon computer instructions which, when executed, perform the steps of the power supply voltage monitoring method as described above.
The power supply voltage monitoring system, the method, the vehicle machine and the storage medium can monitor whether the power supply voltage of each branch in the system is abnormal in real time and flexibly, improve the safety protection performance of products, are particularly suitable for more complex hardware systems, can effectively save the design cost of hardware, and are beneficial to controlling the area of a PCB and the communication pin requirements of a main control IC.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and explain the application and do not limit it. In the drawings:
FIG. 1 is a block diagram of a power supply voltage monitoring system according to an embodiment of the present application;
FIG. 2 is a block diagram of a power supply voltage monitoring system according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a single anomaly detection circuit according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a multi-anomaly detection circuit according to an embodiment of the present application;
fig. 5 is a schematic diagram of an abnormality recognition unit according to an embodiment of the present application;
FIG. 6 is a flow chart of a method for monitoring supply voltage according to an embodiment of the present application;
FIG. 7 is a flow chart of a method for monitoring supply voltage according to another embodiment of the present application;
fig. 8 is a block diagram of a vehicle structure according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present application are shown in the drawings, it is to be understood that the present application may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and examples of the present application are for illustrative purposes only and are not intended to limit the scope of the present application.
It should be understood that the various steps recited in the method embodiments of the present application may be performed in a different order and/or performed in parallel. Furthermore, method embodiments may include additional steps and/or omit performing the illustrated steps. The scope of the present application is not limited in this respect.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "based on" is "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments. Related definitions of other terms will be given in the description below.
It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between different devices, modules, units, or data and not for limiting the order or interdependence of the functions performed by such devices, modules, units, or data.
It should be noted that references to "one" or "a plurality" in this application are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be interpreted as "one or more" unless the context clearly indicates otherwise. "plurality" is understood to mean two or more.
Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.
Fig. 1 is a block diagram of a power supply voltage monitoring system according to an embodiment of the present application, and the power supply voltage monitoring system according to an embodiment of the present application will be described in detail with reference to fig. 1.
A power supply voltage monitoring system 100 comprising: an abnormality identifying unit 110, a detecting unit 120, and at least two power ICs 130.
The detecting unit 120 is connected to the at least two power ICs 130, and is configured to obtain status information of all the power ICs 130, and generate a voltage monitoring value according to the status information. The abnormality identifying unit 110 is connected to the detecting unit 120, and is configured to compare the voltage monitoring value with a plurality of abnormality reference values, and identify an abnormal power supply IC among all power supply ICs (i.e., the at least two power supply ICs described above).
The state information of the power IC 130 may be an output signal of a good power supply pin of the power IC 130, or may be a signal related to the power supply voltage abnormality reflected by another pin. In a specific example, when the power supply voltage of the power supply IC 130 is normal, the state of the pin is an open drain output; when the power supply voltage of the power supply IC 130 is abnormal, the state of the pin is a low level output.
The detection unit 120 may be a detection circuit composed of electronic components, and is connected to each power supply IC 130, and may generate a voltage monitoring value from output signals of power supply good pins of all the power supply ICs 130, and send the voltage monitoring value to the abnormality recognition unit 110.
The abnormality identifying unit 110, which may be a master IC, is connected to the detecting unit 120, and may identify an abnormal power IC by rapidly performing a round-robin sampling by an AD (Analog-to-Digital) combination and comparing a voltage monitoring value with a plurality of abnormal reference values. The abnormal reference value is a preset value and corresponds to the identification number of one or more abnormal power ICs.
According to the power supply voltage monitoring system, the state information of the at least two power supply ICs is obtained through the detection unit, and a voltage monitoring value is generated according to the state information. And identifying an abnormal power supply IC of the at least two power supply ICs by comparing the voltage monitoring value with a plurality of abnormal reference values by an abnormal identification unit. Therefore, whether the power supply voltage of each branch in the system is abnormal or not can be monitored in real time and flexibly, the safety protection performance of the product is improved, the system is particularly suitable for a more complex hardware system, the hardware design cost can be effectively saved, and the control of the PCB area and the communication pin requirement of the main control IC are facilitated.
Fig. 2 is a block diagram of a power supply voltage monitoring system according to another embodiment of the present application. Referring to fig. 2 and 3, the detection unit 120 includes a single abnormality detection circuit 121. At least two test terminals (T1-T6) of the single abnormality detection circuit 121 are connected in one-to-one correspondence with power-good output terminals power-good output of all the power ICs 130 (power IC-1 to power IC-6); the output terminal pwr_pg_det_ad1 of the single abnormality detection circuit 121 is connected to a first input terminal of the abnormality identification unit 110. Thus, the single abnormality detection circuit 121 can output the first voltage monitor value to the abnormality identification unit 110, so that the abnormality identification unit 110 can identify one abnormal power supply IC among all the power supply ICs 130 by comparing the first voltage monitor value with the plurality of first abnormality reference values.
Further, as shown in fig. 3, the output terminal pwr_pg_det_ad1 of the single anomaly detection circuit 121 is connected to the power supply voltage ACC through a first resistor R1 and is grounded through a plurality of second resistors (R2-R8) connected in series; six test terminals (T1-T6) of the single anomaly detection circuit 121 are respectively connected between different adjacent second resistors.
That is, one end of the second resistor R2 is connected to the output terminal of the single abnormality detection circuit 121, and the other end is connected to the test terminal T1 of the single abnormality detection circuit 121; one end of the second resistor R3 is connected with the test end T1, and the other end of the second resistor R3 is connected with the test end T2; one end of the second resistor R4 is connected with the test end T2, and the other end of the second resistor R is connected with the test end T3; one end of the second resistor R5 is connected with the test end T3, and the other end of the second resistor R5 is connected with the test end T4; one end of the second resistor R6 is connected with the test end T4, and the other end of the second resistor R6 is connected with the test end T5; one end of the second resistor R7 is connected with the test end T5, and the other end of the second resistor R7 is connected with the test end T6; one end of the second resistor R8 is connected with the test end T6, and the other end of the second resistor R is grounded.
In a specific example, the resistance values of the second resistors (R2-R8) in fig. 3 are configured to 200Ω, 270 Ω, 560 Ω, 1kΩ, 3.3kΩ, 7.4kΩ, respectively, and the power supply voltage is configured to acc_3v3. In this configuration state, the first voltage monitor value generated by the single abnormality detection circuit 121 may be 3V, 0.55V, 1.05V, 1.67V, 2.02V, 2.42V, and 2.82V; the plurality of first abnormal reference values corresponding to the power supply IC-1 to the power supply IC-6 are 0.55V, 1.05V, 1.67V, 2.02V, 2.42V and 2.82V, respectively.
Specifically, when the power supply voltages of the power supply ICs-1 to 6 are all normal, the states of the power supply good outputs of all the power supply ICs are open drain outputs, and at this time, the single abnormality detection circuit 121 generates the first voltage monitor value 3V and sends it to the abnormality identification unit 110 through the output terminal pwr_pg_det_ad1 of the single abnormality detection circuit 121. When only the power supply voltage of the power supply IC-1 is abnormal, the state of the pin is a low level output, i.e., the state corresponds to the test terminal T1 being grounded, and at this time, the single abnormality detection circuit 121 generates the first voltage monitor value 0.55V, and sends the first voltage monitor value 0.55V to the abnormality identification unit 110 through the output terminal pwr_pg_det_ad1 of the single abnormality detection circuit 121, and the abnormality identification unit 110 compares the first voltage monitor value 0.55V with the plurality of first abnormality reference values, and determines that the first voltage monitor value is equal to the first abnormality reference value of the power supply IC-1, thereby determining that only the power supply voltage of the power supply IC-1 is abnormal. Similarly, when the single abnormality detection circuit 121 detects that the first voltage monitor value is 1.05V, it is determined that the power supply voltage of only the power supply IC-2 is abnormal; when the single abnormality detection circuit 121 detects that the first voltage monitor value is 1.67V, it is determined that the power supply voltage of only the power supply IC-3 is abnormal; when the single abnormality detection circuit 121 detects that the first voltage monitor value is 2.02V, it is determined that the power supply voltage of only the power supply IC-4 is abnormal; when the single abnormality detection circuit 121 detects that the first voltage monitor value is 2.42V, it is determined that the power supply voltage of only the power supply IC-5 is abnormal; when the single abnormality detection circuit 121 detects that the first voltage monitor value is 2.82V, it is determined that the power supply voltage of only the power supply IC-6 is abnormal.
In the embodiment of the present application, referring to fig. 2, the detection unit 120 includes a multi-anomaly detection circuit 122. At least two test terminals (T7-T12) of the multiple abnormality detection circuit 122 are connected in one-to-one correspondence with power-good output terminals power-good output of at least two power ICs 130; the output terminal pwr_pg_det_ad2 of the multiple abnormality detection circuit 122 is connected to a second input terminal of the abnormality identification unit 110. The second voltage monitor value is output to the abnormality identifying unit 110 by the multiple abnormality detecting circuit 122 so that the abnormality identifying unit 110 compares the second voltage monitor value with a plurality of second abnormality reference values to identify at least two abnormal power ICs among all the power ICs 130.
In a specific example, the corresponding second abnormal reference values may be determined for all of the at least two power ICs 130 having an abnormality, respectively, to thereby obtain the plurality of second abnormal reference values.
Further, the output end of the multiple anomaly detection circuit 122 is connected to the power supply voltage through a third resistor, and at least two test ends of the multiple anomaly detection circuit 122 are connected in one-to-one correspondence through at least two fourth resistors connected in parallel, and the resistances of the at least two fourth resistors are different, so that the different branches are different in shunt, and the anomaly power supply IC can be identified.
In the embodiment of the present application, referring to fig. 4, the multiple anomaly detection circuit 122 includes two multiple anomaly detection sub-circuits configured identically, namely a multiple anomaly detection first sub-circuit 1221 and a multiple anomaly detection second sub-circuit 1222. It should be noted that, the resistance values of the fourth resistors in each multiple anomaly detection sub-circuit are different, that is, the resistance values of R10, R11 and R12 are different, and the resistance values of R13, R14 and R15 are different, so that the branches of the multiple anomaly detection sub-circuits are different in shunt, and each multiple anomaly detection sub-circuit can independently identify the anomaly power ICs in the corresponding group.
For the multi-anomaly detection first sub-circuit 1221, at least two test terminals (T7-T9) thereof are connected in one-to-one correspondence with power-good output terminals power-good output of the power IC-1 to the power IC-3; the output terminal pwr_pg_det_ad2_1 is connected to a corresponding second input terminal of the anomaly identification unit 110. Further, the output terminal pwr_pg_det_ad2_1 is connected to the supply voltage ACC through a third resistor R9, and is connected to the three test terminals (T7-T9) in one-to-one correspondence through three fourth resistors (R10-R12) connected in parallel, and the resistance values of the three fourth resistors R10, R11, and R12 are different.
For the multi-anomaly detection second sub-circuit 1222, at least two test terminals (T10-T12) thereof are connected in one-to-one correspondence with power-good output terminals power-good output of the power IC-4 to the power IC-6; the output terminal pwr_pg_det_ad2_2 is connected to a corresponding second input terminal of the anomaly identification unit 110. Further, the output terminal pwr_pg_det_ad2_2 is connected to the supply voltage ACC through a third resistor R13, and is connected to the three test terminals (T10-T12) in one-to-one correspondence through three fourth resistors (R14-R16) connected in parallel, and the resistance values of the three fourth resistors R13, R14, and R15 are different.
The multiple anomaly detection sub-circuit is configured to output one second voltage monitoring value to the anomaly identification unit 110, so that the anomaly identification unit 110 compares the two second voltage monitoring values with a plurality of second anomaly reference values, and identifies at least two anomaly power ICs in the total power ICs 130.
In a specific example, the resistances of the third resistors R9 and R13 of the multiple abnormality detection sub-circuit in fig. 4 are each configured to be 2.7kΩ, the resistances of the fourth resistors (R10-R12) are configured to be 3kΩ, 6.8kΩ, 10kΩ, respectively, the resistances of the fourth resistors (R14-R16) are also configured to be 3kΩ, 6.8kΩ, 10kΩ, respectively, and the power supply voltage is configured to be acc_3v3. In this configuration state, the second voltage monitor value generated by the multiple anomaly detection sub-circuit may be 3.3V, 1.73V, 2.26V, 2.7V, 1.43V, 1.52V, 1.97V, 2.60V; the corresponding second anomaly reference values were 1.73V, 2.26V, 2.7V, 1.43V, 1.52V, 1.97V, 2.60V.
Specifically, when all of the power supply ICs IC-1 to IC-3 are normal, the second voltage monitor value outputted by PWR_PG_DET_AD2_1 is 3.3V, and when all of the power supply ICs IC-4 to IC-6 are normal, the second voltage monitor value outputted by PWR_PG_DET_AD2_2 is 3.3V; when the power supply IC-1 is abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_1 is 1.73V, and when the power supply IC-4 is abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_2 is 1.73V; when the power supply IC-2 is abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_1 is 2.26V, and when the power supply IC-5 is abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_2 is 2.26V; when the power supply IC-3 is abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_1 is 2.7V, and when the power supply IC-6 is abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_2 is 2.7V; when the power supply IC-1 and the power supply IC-2 are abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_1 is 1.43V, and when the power supply IC-4 and the power supply IC-5 are abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_2 is 1.43V; when the power supply IC-1 and the power supply IC-3 are abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_1 is 1.52V, and when the power supply IC-4 and the power supply IC-6 are abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_2 is 1.52V; when the power supply IC-2 and the power supply IC-3 are abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_1 is 1.97V, and when the power supply IC-5 and the power supply IC-6 are abnormal, the second voltage monitoring value output by the PWR_PG_DET_AD2_2 is 1.97V; the second voltage monitor value outputted by pwr_pg_det_ad2_1 is 2.60V when power supply IC-1, power supply IC-2 and power supply IC-3 are abnormal, and the second voltage monitor value outputted by pwr_pg_det_ad2_2 is 2.60V when power supply IC-4, power supply IC-5 and power supply IC-6 are abnormal.
For example, when the second voltage monitor value output by pwr_pg_det_ad2_1 is 1.43V and the second voltage monitor value output by pwr_pg_det_ad2_2 is 1.52V, the abnormality identifying unit 110 may determine that the power supply IC-1, the power supply IC-2, the power supply IC-4, and the power supply IC-6 are abnormal according to the corresponding second abnormality reference values after comparing.
It is understood that the number of the multiple abnormality detection subcircuits may be plural, which is not particularly limited in this application. When the plurality of abnormality detection sub-circuits are provided, a plurality of second voltage monitor values are outputted to the abnormality identification unit 110 so that the abnormality identification unit 110 identifies at least two abnormal power ICs by comparing the plurality of second voltage monitor values with a plurality of second abnormality reference values.
In the embodiment of the present application, referring to fig. 2 and 5, the power supply voltage monitoring system 100 further includes an anomaly reporting unit 140. The input IN of the anomaly reporting unit 140 is connected to the output of the anomaly identification unit 110, which IN a specific example may be a CAN (Controller Area Network ) bus connection. Six test ends (T13-T18) of the abnormality reporting unit 140 are connected in one-to-one correspondence with the voltage output ends Vout of all the power ICs 130; the output terminal AD3_ DET of the abnormality reporting unit 140 is connected to a third input terminal of the abnormality identifying unit 110. The abnormality reporting unit 140 can obtain the abnormal voltage value of the abnormal power supply IC and report the abnormal voltage value to the abnormality identifying unit 110.
Further, the abnormality reporting unit 140 includes a changeover Switch AD Switch IC, six fifth resistors (R17 to R22) and six sixth resistors (R23 to R28) provided corresponding to the six power ICs. An input terminal IN of the change-over switch is connected to an output terminal of the abnormality recognition unit 110; six channel control ends (POWER_DET1-POWER_DET6) of the transfer switch are connected with the POWER output ends of the corresponding POWER ICs through corresponding fifth resistors (R17-R22) and grounded through corresponding sixth resistors (R23-R28); the output terminal AD3 DET of the change-over switch is connected to the third input terminal of the abnormality recognition unit 110.
When the POWER supply voltage monitoring system 100 is in operation, if the abnormality identifying unit 110 obtains the identification number of the abnormal POWER supply IC (e.g. the POWER supply IC-5) through the detecting unit 120, the identification number is sent to the change-over switch through the CAN bus, so that the change-over switch opens the corresponding channel control terminal (power_det5), so that the voltage output terminal Vout of the POWER supply IC-5 is grounded through R21 and R27. In a specific example, the resistance values of the fifth resistor (R17-R22) and the sixth resistor (R23-R28) may be both 1kΩ, and if the voltage value obtained by the abnormality identifying unit 110 through the AD3 DET is 8V, the voltage value of the abnormality power supply IC-5 is 16V.
In summary, according to the power supply voltage monitoring system of the embodiment of the application, the state information of the at least two power supply ICs is obtained through the detection unit, and the voltage monitoring value is generated according to the state information. And identifying an abnormal power supply IC of the at least two power supply ICs by comparing the voltage monitoring value with a plurality of abnormal reference values by an abnormal identification unit. Therefore, whether the power supply voltage of each branch in the system is abnormal or not can be monitored in real time and flexibly, the safety protection performance of the product is improved, the system is particularly suitable for a more complex hardware system, the hardware design cost can be effectively saved, and the control of the PCB area and the communication pin requirement of the main control IC are facilitated.
Fig. 6 is a flowchart of a power supply voltage monitoring method according to an embodiment of the present application. Referring to fig. 6, the power supply voltage monitoring method is applied to the power supply voltage monitoring system of the above embodiment, and includes the following steps:
in step S201, the detection unit acquires state information of at least two power ICs.
In step S202, the detection unit generates a voltage monitoring value according to the state information.
In step S203, the abnormality identifying unit compares the voltage monitor value with a plurality of abnormality reference values, and identifies an abnormal power IC out of the at least two power ICs.
In the embodiment of the application, the detection unit comprises a single abnormality detection circuit and a multi-abnormality detection circuit. Referring to fig. 7, the method includes the steps of:
in step S301, the single anomaly detection circuit generates a first voltage monitoring value according to the state information.
In step S302, in response to the first voltage monitor value being equal to the normal reference value, the abnormality identifying unit determines that at least two power ICs are both in a normal state.
In step S303, in response to the first voltage monitor value being equal to a first abnormality reference value, the abnormality identifying unit identifies one of the at least two power supply ICs based on the first abnormality reference value.
Further, the method comprises the following steps:
in step S304, in response to the first voltage monitor value not being equal to the normal reference value and not being equal to any one of the first abnormal reference values, the multiple abnormality detection circuit generates a second voltage monitor value according to the state information.
In step S305, in response to the second voltage monitor value being equal to a second abnormal reference value, the abnormality identifying unit identifies at least two abnormal power ICs among the at least two power ICs based on the second abnormal reference value.
In the embodiment of the application, the power supply voltage monitoring system further comprises an abnormality reporting unit. The method further comprises the steps of: the abnormality reporting unit acquires an abnormal voltage value of the abnormal power supply IC and reports the abnormal voltage value to the abnormality identifying unit.
It should be noted that, the explanation of the power supply voltage monitoring system in the above embodiment is also applicable to the power supply voltage monitoring method in the present embodiment, and will not be repeated here.
Fig. 8 is a block diagram of a vehicle structure according to an embodiment of the present application. Referring to fig. 8, the car machine 1000 includes: such as the supply voltage monitoring system 100 described above.
In one embodiment of the present application, there is also provided a computer readable storage medium, which may be included in the system described in the above embodiment; or may exist alone without being assembled into the system. The computer readable storage medium carries one or more computer instructions which, when executed, implement the steps of the vehicle gateway testing method of the above-described embodiments.
Embodiments of the present application, the computer-readable storage medium may be a non-volatile computer-readable storage medium, which may include, for example, but not limited to: portable computer diskette, hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Those of ordinary skill in the art will appreciate that: the foregoing description is only a preferred embodiment of the present application, and is not intended to limit the present application, but although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or that equivalents may be substituted for part of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. A power supply voltage monitoring system, the system comprising:
at least two power ICs;
the detection unit is connected with the at least two power ICs, and is used for acquiring state information of the at least two power ICs and generating a voltage monitoring value according to the state information;
an abnormality identification unit, connected to the detection unit, for comparing the voltage monitoring value with a plurality of abnormality reference values, to identify an abnormal power IC of the at least two power ICs;
the detection unit comprises a single abnormality detection circuit and a multi-abnormality detection circuit;
at least two test ends of the single abnormality detection circuit are connected with good power output ends of the at least two power ICs in a one-to-one correspondence manner and are respectively connected between different adjacent second resistors; the output end of the single abnormality detection circuit is connected with the first input end of the abnormality identification unit, is connected with the power supply voltage through a first resistor, and is grounded through a plurality of second resistors connected in series;
the single abnormality detection circuit is used for outputting a first voltage monitoring value to the abnormality identification unit;
the multi-abnormality detection circuit comprises at least two multi-abnormality detection sub-circuits with the same configuration; wherein,,
the test ends of the multiple abnormality detection subcircuits in the multiple abnormality detection circuit are connected with the good power output ends of the at least two power ICs in a one-to-one correspondence manner, and are respectively connected with the output ends of the corresponding multiple abnormality detection subcircuits through fourth resistors in a one-to-one correspondence manner, and the resistance values of the fourth resistors in each multiple abnormality detection subcircuit are mutually different;
the output end of the multi-abnormality detection sub-circuit is connected with a power supply voltage through a third resistor of the corresponding multi-abnormality detection sub-circuit and is connected with a corresponding second input end of the abnormality identification unit;
a multiple abnormality detection sub-circuit in the multiple abnormality detection circuit for outputting at least two second voltage monitoring values to the abnormality identification unit;
the abnormality identifying unit is used for determining that the at least two power ICs are in a normal state in response to the first voltage monitoring value being equal to a normal reference value; identifying an abnormal power IC of the at least two power ICs based on a first abnormal reference value in response to the first voltage monitor value being equal to the first abnormal reference value; responding to the fact that the first voltage monitoring value is not equal to the normal reference value and is not equal to any first abnormal reference value, and acquiring the second voltage monitoring value; and identifying at least two abnormal power ICs of the at least two power ICs according to a second abnormal reference value in response to the second voltage monitoring value being equal to the second abnormal reference value.
2. The power supply voltage monitoring system of claim 1, wherein the system further comprises: an abnormality reporting unit for reporting the abnormality of the operation unit,
the input end of the device is connected with the output end of the abnormality identification unit;
at least two test ends of the power supply IC are connected with the voltage output ends of the at least two power supply ICs in a one-to-one correspondence manner;
the output end of the abnormal recognition unit is connected with the third input end of the abnormal recognition unit;
the abnormality reporting unit is used for obtaining the abnormal voltage value of the abnormal power supply IC and reporting the abnormal voltage value to the abnormality identifying unit.
3. The power supply voltage monitoring system according to claim 2, wherein the abnormality reporting unit includes a change-over switch, at least two fifth resistors and at least two sixth resistors provided corresponding to the at least two power supply ICs;
the input end of the change-over switch is connected with the output end of the abnormality identification unit;
the at least two channel control ends of the change-over switch are connected with the power output end of the corresponding power IC through the corresponding fifth resistor and are grounded through the corresponding sixth resistor;
the output end of the change-over switch is connected with the third input end of the abnormality identification unit.
4. A power supply voltage monitoring method applied to the power supply voltage monitoring system of claim 1, the method comprising:
the detection unit acquires state information of the at least two power ICs;
the detection unit generates a voltage monitoring value according to the state information;
the abnormality identifying unit compares the voltage monitoring value with a plurality of abnormality reference values to identify an abnormality power supply IC among the at least two power supply ICs;
the detection unit further comprises a single anomaly detection circuit, the method further comprising,
the single anomaly detection circuit generates a first voltage monitoring value according to the state information;
in response to the first voltage monitor value being equal to a normal reference value, the abnormality identifying unit determines that the at least two power ICs are both in a normal state;
in response to the first voltage monitor value being equal to a first abnormality reference value, the abnormality identification unit identifies one of the at least two power supply ICs based on the first abnormality reference value;
in response to the first voltage monitor value not being equal to the normal reference value and not being equal to any one of the first abnormal reference values, the multiple abnormality detection circuit generates a second voltage monitor value according to the state information;
in response to the second voltage monitor value being equal to a second abnormality reference value, the abnormality identifying unit identifies at least two abnormal power supply ICs among the at least two power supply ICs based on the second abnormality reference value.
5. The method according to claim 4, wherein the power supply voltage monitoring system further comprises an abnormality reporting unit; the method further comprises the steps of:
the abnormality reporting unit obtains an abnormal voltage value of the abnormal power supply IC and reports the abnormal voltage value to the abnormality identifying unit.
6. A vehicle, characterized in that it comprises the power supply voltage monitoring system according to any one of claims 1 to 3.
7. A computer readable storage medium having stored thereon computer instructions which when executed perform the steps of the supply voltage monitoring method of claim 4 or 5.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06307898A (en) * | 1993-04-22 | 1994-11-04 | Nippon Steel Corp | Device for monitoring abnormality of detector |
| JP2009136115A (en) * | 2007-11-30 | 2009-06-18 | Denso Corp | Signal transmitter |
| JP2016134998A (en) * | 2015-01-20 | 2016-07-25 | 株式会社デンソー | Signal detection device |
| JP2018023244A (en) * | 2016-08-05 | 2018-02-08 | 株式会社デンソー | Abnormality determination circuit |
| CN208705882U (en) * | 2018-09-11 | 2019-04-05 | 天津北空晶科自控技术有限公司 | A kind of novel quartz flexibility acceleration sensor data collecting card |
| CN111707341A (en) * | 2020-06-24 | 2020-09-25 | 北京恒通安泰科技有限公司 | Data acquisition device and data acquisition method for rail weighbridge and rail weighbridge |
| CN212008781U (en) * | 2020-03-30 | 2020-11-24 | 珠海迈科智能科技股份有限公司 | MLCC abnormity detection circuit |
| CN212458609U (en) * | 2020-06-24 | 2021-02-02 | 北京恒通安泰科技有限公司 | Data acquisition device |
| CN114417930A (en) * | 2022-01-21 | 2022-04-29 | 长沙军民先进技术研究有限公司 | Remote high-precision ocean target automatic identification and judgment method and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7719134B2 (en) * | 2007-06-12 | 2010-05-18 | Mitsubishi Electric Corporation | In-vehicle mount electronic controller |
| US11716240B2 (en) * | 2021-09-21 | 2023-08-01 | Rakuten Mobile, Inc. | Method, device and computer program product for anomaly detection |
-
2023
- 2023-04-21 CN CN202310430712.6A patent/CN116165568B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06307898A (en) * | 1993-04-22 | 1994-11-04 | Nippon Steel Corp | Device for monitoring abnormality of detector |
| JP2009136115A (en) * | 2007-11-30 | 2009-06-18 | Denso Corp | Signal transmitter |
| JP2016134998A (en) * | 2015-01-20 | 2016-07-25 | 株式会社デンソー | Signal detection device |
| JP2018023244A (en) * | 2016-08-05 | 2018-02-08 | 株式会社デンソー | Abnormality determination circuit |
| CN208705882U (en) * | 2018-09-11 | 2019-04-05 | 天津北空晶科自控技术有限公司 | A kind of novel quartz flexibility acceleration sensor data collecting card |
| CN212008781U (en) * | 2020-03-30 | 2020-11-24 | 珠海迈科智能科技股份有限公司 | MLCC abnormity detection circuit |
| CN111707341A (en) * | 2020-06-24 | 2020-09-25 | 北京恒通安泰科技有限公司 | Data acquisition device and data acquisition method for rail weighbridge and rail weighbridge |
| CN212458609U (en) * | 2020-06-24 | 2021-02-02 | 北京恒通安泰科技有限公司 | Data acquisition device |
| CN114417930A (en) * | 2022-01-21 | 2022-04-29 | 长沙军民先进技术研究有限公司 | Remote high-precision ocean target automatic identification and judgment method and system |
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|---|---|
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