CN220020212U

CN220020212U - Board card and electronic equipment

Info

Publication number: CN220020212U
Application number: CN202321024415.3U
Authority: CN
Inventors: 刘文强
Original assignee: Loongson Technology Corp Ltd
Current assignee: Loongson Technology Corp Ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-11-14
Anticipated expiration: 2033-04-28

Abstract

The utility model provides a board card and electronic equipment, wherein the board card comprises a processor, a bridge piece, an analog-to-digital converter and a first protection circuit; the processor is used for monitoring the working temperature of the processor and/or the bridge piece and sending a first interrupt signal to the first protection circuit when the working temperature of the processor and/or the bridge piece reaches a first preset threshold value; the analog-to-digital converter is electrically connected with the bridge piece, and is used for collecting voltage and current in the operation process of the board card, converting the voltage and the current and then transmitting the converted voltage and current to the bridge piece; the processor is also used for monitoring the voltage and the current, and controlling the bridge to send a second interrupt signal to the first protection circuit under the condition that the voltage and/or the current are abnormal; the first protection circuit is used for controlling the board card to be powered down under the condition of receiving the first interrupt signal or the second interrupt signal, so that the board card can execute shutdown operation, abnormal blocking or failure of the board card is avoided, and the performance and the service life of the board card are effectively improved.

Description

Board card and electronic equipment

Technical Field

The utility model relates to the technical field of board card design, in particular to a board card and electronic equipment.

Background

The board card is one of the most basic and important power components of the electronic equipment, and is provided with a plurality of power components such as a processor, a bridge chip, a BIOS (basic input output system) chip, a memory and the like, so that a main circuit system for controlling the operation of the electronic equipment is formed. The processor and the bridge piece are core components of the board card, the processor is a logic operation and control core, codes of the BIOS can be executed, hardware resources of the computer are controlled and allocated, and the like, and the bridge piece is connected with the peripheral equipment and serves as a bridge for the processor to communicate with each peripheral equipment, so that the load of the processor can be effectively reduced, and the use function of the board card is enriched.

In the operation process of the board card, the temperature of the board card is increased due to the heat of each power component, especially the power components with heavier workload such as a processor, a bridge piece and the like, the heat generated by the power components is more, and the normal work of various power components can be influenced even the power components are burnt out due to the overhigh temperature of the board card, so that the safety accident is caused. Therefore, during the operation of the board, the temperature of the board needs to be focused, and if the temperature of the board is too high, protection measures should be immediately taken. Meanwhile, in order to ensure the stable operation of the board card, the working voltage, current and the like of the board card are required to be monitored in the operation process of the board card, and protection measures are required to be taken when overvoltage and overcurrent conditions occur, so that the failure and damage of the board card are avoided.

However, the existing board card cannot provide a more sound protection measure under the condition of abnormal temperature, voltage and current, so that abnormal blocking or faults of the board card are extremely easy to cause, and the performance and the service life of the board card are seriously affected.

Disclosure of Invention

Accordingly, the present utility model provides a board and an electronic device, which at least solve the problems that the existing board cannot provide a sound protection measure under the condition of abnormal temperature, voltage and current, thereby affecting the performance and service life of the board.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model discloses a board which comprises a processor, a bridge piece, an analog-to-digital converter and a first protection circuit, wherein the bridge piece is connected with the processor;

the processor is electrically connected with the bridge piece, and the processor and the bridge piece are respectively electrically connected with the first protection circuit;

the processor is used for monitoring the working temperature of the processor and/or the bridge piece and sending a first interrupt signal to the first protection circuit when the working temperature of the processor and/or the bridge piece reaches a first preset threshold value;

the analog-to-digital converter is electrically connected with the bridge piece and is used for collecting voltage and current in the operation process of the board card, converting the voltage and the current and then transmitting the converted voltage and current to the bridge piece;

The processor is further used for monitoring the voltage and the current and controlling the bridge to send a second interrupt signal to the first protection circuit under the condition that the voltage and/or the current are abnormal;

the first protection circuit is used for controlling the board card to be powered down under the condition that the first interrupt signal or the second interrupt signal is received.

Optionally, the first protection circuit includes: a first control switch;

the first control switch comprises a control end, an input end and an output end, wherein the control end of the first control switch is respectively and electrically connected with the processor, the bridge piece and the first power supply module, and is used for receiving a level signal from the processor, the bridge piece or the first power supply module and controlling the connection or disconnection between the input end and the output end of the first control switch according to the state of the level signal;

one of the input end and the output end of the first control switch is grounded, the other is respectively and electrically connected with the second power module and a power control pin of the board card, and the power control pin is used for controlling the board card to be powered on or powered off.

Optionally, the first protection circuit further includes: a second control switch and a third control switch;

The second control switch and the third control switch comprise a control end, an input end and an output end;

the control end of the second control switch is electrically connected with the processor and the third power supply module respectively, one of the input end and the output end of the second control switch is grounded, and the other is electrically connected with the fourth power supply module respectively;

the control end of the third control switch is electrically connected with the input end or the output end of the fourth power module and the input end or the output end of the second control switch respectively, one of the input end and the output end of the third control switch is grounded, and the other is electrically connected with the control ends of the first power module and the first control switch respectively.

Optionally, a temperature monitoring module is arranged inside the bridge piece;

the temperature monitoring module is used for monitoring the working temperature of the bridge piece, and the processor obtains the working temperature of the bridge piece through the temperature monitoring module and sends the first interrupt signal to the first protection circuit under the condition that the working temperature of the bridge piece reaches the first preset threshold value.

Optionally, the board card further comprises a temperature sensor;

the temperature sensor is electrically connected with the bridge piece and is used for monitoring the working temperature of the board card;

The processor is used for acquiring the working temperature of the board card through the bridge piece, and controlling the bridge piece to send a third interrupt signal to the first protection circuit under the condition that the working temperature of the board card is abnormal, so that the first protection circuit controls the board card to be powered down.

Optionally, the temperature sensor is further electrically connected to the first protection circuit, and the temperature sensor is configured to send a fourth interrupt signal to the first protection circuit when the working temperature of the board card is abnormal, so that the first protection circuit controls the board card to be powered down.

Optionally, the board card further comprises a second protection circuit;

the second protection circuit is electrically connected with the processor and the bridge piece respectively, and the processor is further used for sending a restarting signal to the second protection circuit under the condition that the working temperature of the processor and/or the bridge piece reaches a second preset threshold value; wherein the second preset threshold is less than the first preset threshold;

the second protection circuit is used for restarting the processor and the bridge piece under the condition that the restarting signal is received.

Optionally, the second protection circuit includes a first reset chip and a second reset chip;

The input pin of the first reset chip is electrically connected with the processor, and the output pin of the first reset chip is electrically connected with the bridge piece;

the input pin of the second reset chip is electrically connected with the bridge piece, and the output pin of the second reset chip is electrically connected with the processor;

resetting the bridge piece by the processor through the first reset chip under the condition that the working temperature of the processor and/or the bridge piece reaches the second preset threshold value;

and under the condition that the bridge piece is reset, resetting the processor through the second reset chip by the bridge piece.

Optionally, the second protection circuit further includes a timer, and the timer is electrically connected to the processor and the bridge piece respectively;

after the processor is reset for a first preset time period, restarting the bridge piece by the processor through the first reset chip;

and restarting the processor by the bridge chip through the second reset chip after the bridge chip is restarted for a second preset time period.

The utility model also discloses electronic equipment, which comprises the board card of any one of the above.

Compared with the prior art, the board card and the electronic equipment have the following advantages:

The board card comprises a processor, a bridge piece, an analog-to-digital converter and a first protection circuit, wherein the processor can monitor the working temperature of the processor and the working temperature of the bridge piece, and sends a first interrupt signal to the first protection circuit when the working temperature of the processor and/or the bridge piece reaches a first preset threshold value; meanwhile, the processor can monitor the voltage and the current in the running process of the board card, and under the condition that the voltage and/or the current are abnormal, the control bridge piece sends a second interrupt signal to the first protection circuit; the first protection circuit can control the board card to power down under the condition of receiving the first interrupt signal or the second interrupt signal, so that the board card executes shutdown operation, thereby avoiding abnormal blocking or failure of the board card and effectively improving the performance and service life of the board card.

The electronic device of the present utility model has the same or similar advantages as the board card in the prior art, and is not described herein.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of a board in the present embodiment;

FIG. 2 is a schematic diagram of a first protection circuit in the present embodiment;

FIG. 3 is a schematic diagram of another first protection circuit in the present embodiment;

FIG. 4 is a schematic diagram of another board card according to the present embodiment;

fig. 5 is a schematic diagram of a second protection circuit in the present embodiment.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be appreciated that reference throughout this specification to "one embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrase "in one embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The following describes in detail a board and an electronic device provided by the utility model by listing specific embodiments.

Referring to fig. 1, a board provided by the present utility model includes a processor 1, a bridge chip 2, an analog-to-digital converter 3, and a first protection circuit 4; the processor 1 is electrically connected with the bridge chip 2, and the processor 1 and the bridge chip 2 are respectively electrically connected with the first protection circuit 4; the processor 1 is configured to monitor an operating temperature of the processor 1 and/or the bridge piece 2, and send a first interrupt signal to the first protection circuit 4 when the operating temperature of the processor 1 and/or the bridge piece 2 reaches a first preset threshold; the analog-to-digital converter 3 is electrically connected with the bridge piece 2, and the analog-to-digital converter 3 is used for collecting voltage and current in the operation process of the board card and transmitting the converted voltage and current to the bridge piece 2; the processor 1 is further configured to monitor the voltage and the current, and control the bridge piece 2 to send a second interrupt signal to the first protection circuit 4 in the case that the voltage and/or the current are abnormal; the first protection circuit 4 is configured to control the board card to power down when receiving the first interrupt signal or the second interrupt signal.

Specifically, the board card includes a processor 1, a bridge 2, an analog-to-digital converter 3 and a first protection circuit 4, where the processor 1, i.e., a CPU (Central Processing Unit, central processing unit 1) has a control unit, a logic unit, a storage unit, and the like, and the units coordinate with each other and can perform analysis, judgment, and operation functions, so as to control and coordinate the computer system to perform work. The processor 1 is electrically connected with the bridge piece 2, and the bridge piece 2 is equivalent to a data processing center, so that indirect communication between the processor 1 and each external component can be realized. While the processor 1 and the bridge chip 2 are also electrically connected to the first protection circuit 4, respectively. Because integrated circuit and each power component on the integrated circuit can generate heat on the integrated circuit and each power component on the integrated circuit can generate heat, the temperature of the integrated circuit is increased, and especially the power components with heavier workload such as a processor 1, a bridge piece 2 and the like are more in heat generated in the working process, and the power components are a main heat source for heating the integrated circuit and are also easy to damage due to overhigh temperature. Under the normal condition, the temperature rise of the board card needs to be controlled within 20 ℃, and the excessively severe temperature rise can be accompanied by abnormal heat dissipation of the board card, so that the board card is short-circuited, abnormal in operation, even burnt out, and the like, thereby causing safety accidents. Therefore, the temperature of the board card needs to be detected in the operation process of the board card, and if the temperature is too high, protective measures should be immediately taken to ensure the safety of the board card. Of course, besides temperature monitoring, the voltage and current in the operation process of the board card need to be focused, whether the monitored voltage is matched with the rated working voltage of the power components or not is not suitable for overlarge voltage mutation, the current is monitored to master the power consumption conditions of the power components under different working conditions, whether the board card has current abnormality conditions such as short circuit and the like is judged, and protective measures are adopted immediately when overvoltage and overcurrent conditions occur, so that the safety of the board card is further ensured. The first protection circuit 4 in this embodiment is a circuit that performs protection measures on the board under the condition that the board is abnormal in operation, where the first protection circuit 4 is electrically connected with an enabling pin of the board main power supply, and the power failure of the board can be realized by closing the enabling pin, so as to avoid abnormal blocking or failure of the board, and the specific protection process is as follows:

The processor 1 may monitor its own operating temperature and the operating temperature of the bridge piece 2 and send a first interrupt signal to the first protection circuit 4 if its own operating temperature and/or the operating temperature of the bridge piece 2 reaches a first preset threshold. The first preset threshold may be set freely according to the standards of the processor 1 and the bridge piece 2, and of course, because the workload of the processor 1 and the bridge piece 2 may be different, the first preset thresholds of the processor 1 and the bridge piece 2 may also be set differently, if the power consumption standards and the performance requirements of the processor 1 and the bridge piece 2 are higher, the first preset thresholds may be set larger correspondingly, and if the power consumption standards and the performance requirements of the processor 1 and the bridge piece 2 are lower, the first preset thresholds may be set smaller correspondingly, and how to set the embodiment is not limited. When the first protection circuit 4 receives the first interrupt signal, protection measures are immediately started to be executed on the board card, and the protection measures are set to be that the control board card is powered down, so that the board card executes shutdown operation.

The Analog-to-digital converter 3 is electrically connected to the bridge 2, and the Analog-to-digital converter 3, i.e. ADC (Analog-to-Digital Converter), can convert a continuously variable Analog signal into a discrete digital signal. The analog-digital converter 3 is used for collecting voltage and current in the operation process of the board card, and the voltage and current in the operation process of the board card mainly refer to the voltage and current of main power components with larger operation load on the board card, such as the voltage and current of the processor 1, the voltage and current of the bridge piece 2, the voltage and current of the memory and the like, and the voltage and current of the power components with smaller operation load are stable under the normal condition, and are not easy to generate overvoltage and overcurrent conditions, so that the collection is not needed any more, and the operation load of the analog-digital converter 3 is reduced. It should be noted that, the current signal needs to be converted into a voltage value to be collected by the analog-digital converter 3, in this embodiment, a mode of connecting the power component in series with the precision resistor is adopted, the analog-digital converter 3 is utilized to measure the voltages at two ends of the precision resistor at the same time, and the current value corresponding to the power component can be obtained by dividing the difference by the resistance value after quantization. After the analog-to-digital converter 3 collects the voltage and the current, the analog signals of the collected voltage and the current are converted into digital signals and then sent to the bridge piece 2, the processor 1 can obtain the voltage signals and the current signals from the bridge piece 2 and control the bridge piece 2 to send a second interrupt signal to the first protection circuit 4 under the condition that the voltage and/or the current are abnormal, the voltage and/or the current of the power component are abnormal, namely the power component is over-voltage and over-current, and the first protection circuit 4 immediately starts to execute protection measures on the board card when receiving the second interrupt signal, namely the control board card is powered down, so that the board card executes shutdown operation. It should be noted that, the logic circuit is integrated in the processor 1, including an and gate circuit, an or gate circuit, etc., and the processor 1 needs the participation of the logic circuit when judging whether the working temperature of the processor 1 and the working temperature of the bridge 2 reach the first preset threshold value and judging whether the voltage signal and the circuit signal are abnormal.

Further, the processor 1 and the bridge 2 are provided with an SPI (Serial Peripheral Interface, serial peripheral) bus interface, an I2C (Inter-Integrated Circuit, integrated circuit) bus interface, an HT (Hyper Transport, high speed serial) bus interface, and a PCIE (peripheral component interconnect express, high speed serial computer expansion) bus interface, wherein the SPI bus is a high-speed, full duplex, synchronous serial bus, and is mainly used for connection between a memory chip, a clock chip, a conversion chip, etc., and includes four signal lines, and has a relatively fast signal transmission rate and a relatively simple transmission protocol; the I2C bus is a low-speed, half-duplex and synchronous serial bus, can be connected with modules of various integrated circuits, comprises two signal wires, has fewer signal wires and fewer ports occupying parts, and is convenient to connect; the HT bus is an end-to-end bus designed for the interconnection of integrated circuits on a main board, can accelerate the data transmission speed among all components, and the PCIE bus belongs to high-speed serial point-to-point dual-channel high-bandwidth transmission, and connected devices allocate independent channel bandwidths, do not share bus bandwidths, and can support the functions of active power management, error reporting, end-to-end reliability transmission and the like. On the board of this embodiment, the analog-to-digital converter 3 is electrically connected with the bridge piece 2 through the SPI bus or the I2C bus, and the processor 1 is electrically connected with the bridge piece 2 through the HT bus, the I2C bus or the PCIE bus, so as to rationalize the line connection mode of the board, and to maximally ensure high-speed and effective communication between each component on the board.

The board card of the embodiment of the utility model comprises a processor 1, a bridge piece 2, an analog-to-digital converter 3 and a first protection circuit 4, wherein the processor 1 can monitor the working temperature of the processor 1 and the working temperature of the bridge piece 2, and sends a first interrupt signal to the first protection circuit 4 when the working temperature of the processor 1 and/or the bridge piece 2 reaches a first preset threshold value; meanwhile, the processor 1 can also monitor the voltage and the current in the running process of the board card, and under the condition that the voltage and/or the current are abnormal, the control bridge piece 2 sends a second interrupt signal to the first protection circuit 4; the first protection circuit 4 can control the board card to power down under the condition of receiving the first interrupt signal or the second interrupt signal, so that the board card executes shutdown operation, thereby avoiding abnormal blocking or failure of the board card and effectively improving the performance and service life of the board card.

Alternatively, referring to fig. 2, there is shown a schematic structural diagram of a first protection circuit 4 including a first control switch Q1; the first control switch Q1 includes a control end, an input end and an output end, where the control end of the first control switch Q1 is electrically connected to the processor 1, the bridge piece 2 and the first power module, and is configured to receive a level signal from the processor 1, the bridge piece 2 or the first power module, and control on or off between the input end and the output end of the first control switch Q1 according to a state of the level signal; one of the input end and the output end of the first control switch Q1 is grounded, the other is respectively and electrically connected with the second power module and a power control pin of the board card, and the power control pin is used for controlling the board card to be powered on or powered off.

Specifically, the first control switch Q1 may be a MOS transistor, taking an NMOS transistor as an example, where the control end of the first control switch Q1 is a gate of the NMOS transistor (shown in G in fig. 2), the input end of the first control switch Q1 is a drain of the NMOS transistor (shown in D in fig. 2), the output end of the first control switch Q1 is a source of the NMOS transistor (shown in S in fig. 2), and the NMOS transistor is turned on when the voltage difference between the gate and the source is greater than the turn-on threshold, and is turned off when the voltage difference between the gate and the source is less than the turn-on threshold. In this embodiment, the gate of the NMOS transistor is electrically connected to the processor 1, the bridge 2, and the first power module (shown as V1 in fig. 2), respectively, and is configured to receive a level signal from the processor 1, the bridge 2, or the first power module, where the state of the level signal includes a high level state and a low level state. The source of the NMOS tube is grounded, and the drain is electrically connected with the power control pin of the board card and the second power module (shown as V2 in FIG. 2).

The first power supply module and the second power supply module in the above embodiments are power supply modules formed by converting an external total power supply through voltage and used for outputting a voltage in a low threshold range, and the voltage output by the first power supply module and the second power supply module can supply power for the board card and each electronic component on the board card so as to ensure normal operation of the board card and each electronic component on the board card, and the first power supply module and the second power supply module in the present embodiments can output a voltage of 3V to 12V so as to meet the operation requirements of the board card and each electronic component on the board card. The first power module is connected with a pull-up resistor R1 to ensure that the first power module outputs high level for the grid electrode of the first control switch Q1, and the second power module is connected with a pull-up resistor R2 to ensure that the second power module outputs high level for the power control pin of the board card. The POWER control pin of the board card can be a PS-ON (Power Supply-ON) pin, when the level state of the PS-ON pin is low, the second POWER module can normally Supply POWER to the board card, so that the board card keeps the POWER-ON state to work normally, and when the level state of the PS-ON pin is high, the second POWER module stops supplying POWER to the board card, so that the board card stops working when the POWER-off state of the board card is high.

When the working temperature of the processor 1 and/or the bridge piece 2 is normal, the first power module outputs a high level for the grid electrode of the NMOS tube, so that the voltage difference between the grid electrode and the source electrode of the NMOS tube is larger than the conduction threshold value of the NMOS tube and is in a conduction state, and the NMOS tube can pull down the power control pin of the board card in the conduction state, namely, the PS-ON pin is in a low level state, so that the board card keeps a power-ON state and works normally. When the working temperature of the processor 1 and/or the bridge piece 2 is abnormal, the processor 1 outputs a low level to the grid electrode of the NMOS tube, so that the voltage difference between the grid electrode and the source electrode of the NMOS tube is smaller than the ON threshold value of the NMOS tube and is in an off state, and the second power module outputs voltage to the power control pin of the board card in the off state, so that the level state of the power control pin is changed from low to high, namely the PS-ON pin is changed into a high level state, and the board card is powered down to stop working. In this embodiment, the low level signal output from the processor 1 to the NMOS transistor gate corresponds to the first interrupt signal in the above-described embodiment.

Similarly, when the voltage and/or the current of the board card are normal, the first power module outputs a high level for the grid electrode of the NMOS tube, so that the NMOS tube is in a conducting state, the PS-ON pin of the board card is pulled down to a low level state, and the board card works normally; when the operating temperature of the processor 1 and/or the bridge piece 2 is abnormal, the bridge piece 2 outputs a low level to the gate of the NMOS tube, so that the NMOS tube is in an off state, the PS-ON pin of the board becomes in a high level state, and the board is powered down to stop working.

Of course, the first control switch Q1 may be a PMOS tube, where the control end of the first control switch Q1 is a gate of the PMOS tube, the input end of the first control switch Q1 is a source of the PMOS tube, the output end of the first control switch Q1 is a drain of the PMOS tube, and the PMOS tube is turned on when the voltage difference between the gate and the source is smaller than the turn-on threshold, and turned off when the voltage difference between the gate and the source is larger than the turn-on threshold. The grid electrode of the PMOS tube is respectively and electrically connected with the processor 1, the bridge piece 2 and the first power supply module and is used for receiving level signals from the processor 1, the bridge piece 2 or the first power supply module, the source electrode of the PMOS tube is grounded, and the drain electrode of the PMOS tube is electrically connected with the power supply control pin of the board card and the second power supply module. Because the level state of the grid output of the PMOS tube is low under the condition that the working temperature of the processor 1 and/or the bridge piece 2 is abnormal, and the level state of the grid output of the PMOS tube is low under the condition that the voltage and/or the current of the board card is abnormal, in order to ensure that the on or off of the PMOS tube can reach the target effect, an inverter can be arranged on a path between the grid of the PMOS tube and the processor 1, the bridge piece 2 and the first power module so as to ensure that the PMOS tube is in an off state when the grid of the PMOS tube receives a low level signal, and the second power module outputs voltage for the power control pin of the board card, thereby powering down the board card and stopping working.

Optionally, referring to fig. 3, a schematic structural diagram of another first protection circuit 4 is shown, said first protection circuit further comprising: a second control switch Q2 and a third control switch Q3; the second control switch Q2 and the third control switch Q3 each comprise a control end, an input end and an output end; the control end of the second control switch Q2 is electrically connected with the processor 1 and the third power supply module respectively, one of the input end and the output end of the second control switch Q2 is grounded, and the other is electrically connected with the fourth power supply module respectively; the control end of the third control switch Q3 is electrically connected with the input end or the output end of the fourth power module and the second control switch Q2, one of the input end and the output end of the third control switch Q3 is grounded, and the other is electrically connected with the control ends of the first power module and the first control switch Q1.

Specifically, the first protection circuit further includes a second control switch Q2 and a third control switch Q3, where the second control switch Q2 and the third control switch Q3 may also be MOS transistors, and the second control switch Q2 and the third control switch Q3 are both NMOS transistors, the control end of the second control switch Q2 is the gate (shown in fig. 3G) of the NMOS transistor, the input end of the second control switch Q2 is the drain (shown in fig. 3D) of the NMOS transistor, the output end of the first control switch Q1 is the source (shown in fig. 3S) of the NMOS transistor, and the on and off conditions of the NMOS transistor are identical to those in the foregoing embodiments, which will be described later herein. The grid electrode of the second control switch Q2 is electrically connected to the processor 1 and the third power module (shown as V3 in fig. 3), and is used for receiving a level signal from the processor 1 or the third power module, the source electrode of the second control switch Q2 is grounded, and the drain electrode is electrically connected to the control ends of the fourth power module and the third control switch Q3, respectively. The control end of the third control switch Q3 is the grid electrode of the NMOS tube, the input end of the third control switch Q3 is the drain electrode of the NMOS tube, and the output end of the third control switch Q3 is the source electrode of the NMOS tube. The gate of the third control switch Q3 is further electrically connected to a fourth power module (shown as V4 in fig. 3), the source of the third control switch Q3 is grounded, and the drain is electrically connected to the control terminals of the first power module and the first control switch Q1, respectively.

The third power supply module and the fourth power supply module in this embodiment are substantially the same as the first power supply module and the second power supply module in the foregoing embodiments, and are all power supply modules for outputting a voltage in a low threshold range, which are formed by voltage conversion of an external total power supply, and are capable of outputting a voltage of 3V to 12V. The third power supply module is connected with a pull-up resistor R3 to ensure that the third power supply module outputs a high level for the grid electrode of the second control switch Q2, and the fourth power supply module is connected with a pull-up resistor R4 to ensure that the fourth power supply module outputs a high level for the grid electrode of the third control switch Q3. Because the voltage fluctuation easily occurs in the working process of the processor 1 just after power-up or after power-up, the level state of the output of the processor 1 for the first control switch Q1 is unstable, and the misoperation easily occurs in the working process of the board card, so that the board card is powered down, etc., the second control switch Q2 and the third control switch Q3 are additionally arranged in the embodiment. The specific circuit control process is as follows: when the working temperature of the processor 1 and/or the bridge piece 2 is normal, the third power supply module outputs a high-level state for the grid electrode of the second control switch Q2, so that the second control switch Q2 is conducted, under the condition that the second control switch Q2 is conducted, the grid electrode of the third control switch Q3 is pulled down, the third control switch Q3 is disconnected, and under the condition that the third control switch Q3 is disconnected, the first power supply module and the first control switch Q1 connected with the drain electrode of the third control switch Q3 cannot be influenced, which is equivalent to adding an isolation state between the first control switch Q1 and the processor 1, so that when the working temperature of the processor 1 and/or the bridge piece 2 is normal, the first power supply module outputs a level for the first control switch Q1, thereby ensuring the smooth conduction of the first control switch Q1 and keeping the normal power-on work of the board card. When the working temperature of the processor 1 and/or the bridge piece 2 is abnormal, the third power module is in a low-level state output by the grid electrode of the second control switch Q2, so that the second control switch Q2 is disconnected, when the second control switch Q2 is disconnected, the fourth power module is in a high-level output by the grid electrode of the third control switch Q3, so that the third control switch Q3 is conducted, and when the third control switch Q3 is conducted, the grid electrode of the first control switch Q1 is pulled down, so that the first control switch Q1 is disconnected, and the board card is powered down to stop working.

Optionally, a temperature monitoring module is arranged inside the bridge piece 2; the temperature monitoring module is configured to monitor an operating temperature of the bridge piece 2, and the processor 1 obtains the operating temperature of the bridge piece 2 through the temperature monitoring module, and sends the first interrupt signal to the first protection circuit 4 when the operating temperature of the bridge piece 2 reaches the first preset threshold.

Specifically, the inside temperature monitoring module that is provided with of bridge piece 2, temperature monitoring module can real-time supervision bridge piece 2's operating temperature, of course, the inside temperature monitoring module that also is provided with of treater 1, can real-time supervision treater 1's operating temperature, treater 1 can obtain self operating temperature through self temperature monitoring module, also can obtain bridge piece 2's operating temperature through bridge piece 2's temperature monitoring module to under the condition that treater 1 and/or bridge piece 2's operating temperature reached first default threshold value, send first interrupt signal to first protection circuit 4, make first protection circuit 4 control panel card power down shutdown.

Optionally, referring to fig. 4, the board card further includes a temperature sensor 5; the temperature sensor 5 is electrically connected with the bridge piece 2, and the temperature sensor 5 is used for monitoring the working temperature of the board card; the processor 1 obtains the working temperature of the board through the bridge piece 2, and the processor 1 is further configured to control the bridge piece 2 to send a third interrupt signal to the first protection circuit 4 under the condition that the working temperature of the board is abnormal, so that the first protection circuit 4 controls the board to be powered down.

Specifically, the temperature sensor 5 is electrically connected with the bridge piece 2, and in a preferred embodiment, the temperature sensor 5 can be attached to the surface of the bridge piece 2, so as to reduce the occupied space of the temperature sensor 5, and facilitate the realization of miniaturization and light weight design of the board card, thereby saving the processing cost. The temperature sensor 5 is used for monitoring the working temperature of the board, the working temperature of the board refers to the working temperature of the integrated circuit on the board, and the bridge piece 2 can acquire the monitored temperature information from the temperature sensor 5 and feed the temperature information back to the processor 1. After acquiring the temperature information, the processor 1 can control the bridge 2 to send a third interrupt signal to the first protection circuit 4 when the working temperature of the board is abnormal. Abnormal working temperature of the board card means that the working temperature of the board card exceeds a specified temperature, for example, in a normal case, the temperature rise of the board card is not more than 20 ℃, and if the temperature sensor 5 detects that the temperature rise of the board card exceeds 20 ℃, the working temperature of the board card is regarded as abnormal. Of course, the specific temperature rising range may be set according to actual needs, and the present embodiment is not limited thereto. The first protection circuit 4 can control the board to power down under the condition that the third interrupt signal is received, so that the board can execute the shutdown operation, and the board can control the board to power down and shut down through the first protection circuit 4 under the condition that the working temperature of the processor 1 and/or the bridge piece 2 is abnormal and the condition that the working temperature of the board is abnormal.

Further, the temperature sensor 5 is electrically connected with the bridge piece 2 through a bus, so that the temperature sensor 5 has an over-temperature alarm function, for example, the bus is an SMBus (System Management Bus ), the SMBus is a two-wire serial bus, the pin number of component connection can be saved, information transmission is performed through the SMBus, the state of the component connection can be saved for a suspension event, different types of errors are reported, control parameters are received, the state of the component connection is returned, and the like, so that the over-temperature alarm function of the temperature sensor 5 is guaranteed to be normally realized, and when the temperature sensor 5 monitors that the working temperature of the board card is abnormal, the over-temperature alarm can be directly triggered to prompt an operator to process. When selecting the temperature sensor 5, a sensor with an over-temperature alarm output pin may be selected, and an exemplary temperature alarm output pin of the temperature sensor 5 may be an Alert pin, where the Alert pin may output alarm information to a control circuit connected thereto in case that the temperature detected by the temperature sensor 5 is too high, so that the control circuit performs a corresponding protection measure.

Optionally, referring to fig. 3 and fig. 4, the temperature sensor 5 is further electrically connected to the first protection circuit 4, and the temperature sensor 5 is configured to send a fourth interrupt signal to the first protection circuit 4 when the working temperature of the board is abnormal, so that the first protection circuit 4 controls the board to be powered down.

Specifically, in combination with the above embodiment, on the basis that the temperature sensor 5 has the over-temperature alarm function, the over-temperature alarm output pin of the temperature sensor 5 may be electrically connected with the first protection circuit 4, when the temperature sensor 5 monitors that the working temperature of the board is abnormal, the over-temperature alarm output pin of the temperature sensor 5 may immediately send a fourth interrupt signal to the first protection circuit 4, and the first protection circuit 4 may control the board card to power down under the condition of receiving the fourth interrupt signal, so that the board card performs a shutdown operation. It should be noted that, the fourth interrupt signal, the first interrupt signal, the second interrupt signal, and the third interrupt signal may be any type of electrical signal, and the embodiment is not limited to specific types of signals.

As shown in fig. 3, in the structure of the first protection circuit in this embodiment, the control end of the first control switch Q1 is further electrically connected to the temperature sensor 5, and when the working temperature of the board card is normal, the first power module outputs a high level to the gate of the first control switch Q1, so that the first control switch Q1 is in a conductive state, the PS-ON pin of the board card is pulled down to a low level state, and the board card works normally. When the working temperature of the board card is abnormal, the temperature sensor 5 outputs a low level to the grid electrode of the first control switch Q1, so that the first control switch Q1 is in an off state, the PS-ON pin of the board card is changed into a high level state, the board card is powered down to stop working, and a low level signal output by the temperature sensor 5 to the grid electrode of the first control switch Q1 is equivalent to a fourth interrupt signal.

Optionally, referring to fig. 4, the board card further includes a second protection circuit 6; the second protection circuit 6 is electrically connected to the processor 1 and the bridge piece 2, and the processor 1 is further configured to send a restart signal to the second protection circuit 6 when the working temperature of the processor 1 and/or the bridge piece 2 reaches a second preset threshold; the second preset threshold value is smaller than the first preset threshold value; the second protection circuit 6 is configured to restart the processor 1 and the bridge 2 when the restart signal is received.

Specifically, the board card further includes a second protection circuit 6, and similarly to the first protection circuit 4, the second protection circuit 6 is also a circuit for performing protection measures on the board card under the condition that the board card operates abnormally, and abnormal blocking or failure of the board card can be effectively avoided through the second protection circuit 6. Specifically, the second protection circuit 6 is electrically connected to the processor 1 and the bridge piece 2, where the processor 1 may send a restart signal to the second protection circuit 6 when the operating temperature of the processor 1 and/or the bridge piece 2 reaches a second preset threshold, and the second protection circuit 6 may reset the processor 1 and the bridge piece 2 and perform a restart operation on the processor 1 and the bridge piece 2 when receiving the restart signal, so as to avoid damage caused by long-time operation of the processor 1 or the bridge piece 2 under the condition of abnormal temperature.

The second preset threshold value is smaller than the first preset threshold value, which corresponds to two protection measures for the processor 1 and the bridge piece 2 in case of abnormal temperature: one is that when the working temperature of the processor 1 and/or the bridge piece 2 is higher and reaches the second preset threshold, the second protection circuit 6 resets and restarts the processor 1 and the bridge piece 2 to restore the processor 1 and the bridge piece 2 to the normal temperature range for working. And when the working temperature of the processor 1 and/or the bridge piece 2 is too high and reaches a first preset threshold value, the board is subjected to power-down shutdown operation through the first protection circuit 4, so that the processor 1 and the bridge piece 2 are directly powered off, and the temperature is reduced for a long time. Based on different working conditions of the processor 1 and the bridge piece 2, the embodiment provides more flexible, hierarchical and comprehensive protection measures for the processor through the first protection circuit 4 and the second protection circuit 6, and further enriches the self-protection mechanism of the board card.

Alternatively, referring to fig. 5, the second protection circuit 6 includes a first reset chip 61 and a second reset chip 62; an input pin of the first reset chip 61 is electrically connected with the processor 1, and an output pin of the first reset chip 61 is electrically connected with the bridge piece 2; an input pin of the second reset chip 62 is electrically connected with the bridge piece 2, and an output pin of the second reset chip 62 is electrically connected with the processor 1; in case the operating temperature of the processor 1 and/or the bridge 2 reaches the second preset threshold, the processor 1 resets the bridge 2 through the first reset chip 61; in case the bridge tile 2 is reset, the bridge tile 2 resets the processor 1 via the second reset chip 62.

Specifically, the second protection circuit 6 includes a first reset chip 61 and a second reset chip 62, an input pin of the first reset chip 61 is electrically connected with the processor 1, an output pin of the second reset chip 62 is electrically connected with the bridge piece 2, an output pin of the second reset chip 62 is electrically connected with the processor 1, and a restarting process of the processor 1 and the bridge piece 2 by the second protection circuit 6 is as follows: when the working temperature of the processor 1 and/or the bridge piece 2 reaches the second preset threshold value, the pin of the processor 1 outputs a low-level signal, and the input pin of the first reset chip 61 is pulled down, so that the output pin of the first reset chip 61 outputs a reset signal to reset the bridge piece 2; after the bridge piece 2 is reset, the pins of the bridge piece 2 output low-level signals, all components connected with the bridge piece are reset, including the second reset chip 62, and then the output pins of the second reset chip 62 output reset signals to reset the processor 1, so that the reset of the processor 1 and the bridge piece 2 is realized, and the reset process of the processor 1 and the bridge piece 2 is realized under the condition of mutual assistance and cooperation, namely synchronous work or synchronous reset.

Optionally, referring to fig. 5, the second protection circuit 6 further includes a timer 63, and the timer 63 is electrically connected to the processor 1 and the bridge chip 2, respectively; after the processor 1 is reset for a first preset period of time, the processor 1 restarts the bridge piece 2 through the first reset chip 61; after the bridge 2 is restarted for a second preset period of time, the bridge 2 restarts the processor 1 through the second reset chip 62.

Specifically, the second protection circuit 6 further includes a timer 63, where the timer 63 is electrically connected to the processor 1 and the bridge 2, and the timer 63 has a function of timing, and can provide a first preset duration and a second preset duration for the processor 1 and the bridge 2. In a specific embodiment, the first preset duration and the second preset duration are at least more than 100ms, after the processor 1 is reset for the first preset duration, the pins of the processor 1 are restored to a high level mode, and the input end of the first reset chip 61 is pulled up through a pull-up resistor, so that the first reset chip 61 restarts the bridge chip 2; after the bridge chip 2 is restarted for a second preset period of time, the bridge chip 2 de-resets the second reset chip 62, and the processor 1 is restarted through the second reset chip 62, so that the processor 1 and the bridge chip 2 reload firmware, and the system restart is realized.

The embodiment of the utility model also provides electronic equipment, which comprises the board card.

Specifically, the electronic equipment is provided with the board card, the integrated circuit and the power component on the board card can form a control center for normal operation of the electronic equipment, and the board card can automatically power down to shut down the electronic equipment under the condition that the temperature, the voltage or the current of the board card is abnormal, so that the abnormal operation of the electronic equipment is avoided, the use safety of the electronic equipment is ensured, and the electronic equipment such as computer equipment and the like.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or terminal device comprising the element.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The board card is characterized by comprising a processor, a bridge piece, an analog-to-digital converter and a first protection circuit;

2. The board card of claim 1, wherein the first protection circuit comprises: a first control switch;

3. The board card of claim 2, wherein the first protection circuit further comprises: a second control switch and a third control switch;

4. A board according to any one of claims 1 to 3, wherein a temperature monitoring module is provided inside the bridge piece;

5. A board according to any one of claims 1 to 3, further comprising a temperature sensor;

6. The board card of claim 5, wherein the temperature sensor is further electrically connected to the first protection circuit, and the temperature sensor is configured to send a fourth interrupt signal to the first protection circuit when the working temperature of the board card is abnormal, so that the first protection circuit controls the board card to be powered down.

7. The board card of claim 4, further comprising a second protection circuit;

8. The board card of claim 7, wherein the second protection circuit comprises a first reset chip and a second reset chip;

9. The board card of claim 8, wherein the second protection circuit further comprises a timer electrically connected to the processor and the bridge piece, respectively;

10. An electronic device comprising the board card of any one of claims 1 to 9.