CN115658442A - Case state monitoring circuit, server case and server system - Google Patents
Case state monitoring circuit, server case and server system Download PDFInfo
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- CN115658442A CN115658442A CN202211598104.8A CN202211598104A CN115658442A CN 115658442 A CN115658442 A CN 115658442A CN 202211598104 A CN202211598104 A CN 202211598104A CN 115658442 A CN115658442 A CN 115658442A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The embodiment of the invention discloses a case state monitoring circuit, a server case and a server system, wherein a sensing module is used for detecting environmental parameters in the case and converting the environmental parameters into electric signals to be transmitted to the input end of a corresponding processing module; the processing module is used for processing the electric signals output by the sensing module and outputting the electric signals corresponding to the environmental state to the substrate management controller through the output end of the processing module, so that the substrate management controller determines the environmental state according to the electric signals corresponding to the environmental state, and controls to turn off a system power supply when the environmental state is abnormal, thereby preventing the server fault from further worsening and improving the safety performance of the server case.
Description
Technical Field
The embodiment of the invention relates to the technical field of network equipment, in particular to a case state monitoring circuit, a server case and a server system.
Background
With the continuous development of intelligent informatization, the method has higher requirements on the aspects of stability, safety and the like of the server.
The frequency of mainboard failures is also increasing due to the fact that assemblies and circuits integrated by a mainboard of a current server case are multiple and complex. When the main board breaks down, the device is easy to burn out, and other structures in the main board component and the server chassis can be damaged if the main board is not blocked in time.
Particularly, a spraying system is usually arranged in a data center where an existing server chassis is located, and when the spraying system is possibly triggered under the condition that the environmental state in the server chassis is abnormal, the servers of the whole data center may be seriously damaged.
Disclosure of Invention
The invention provides a case state monitoring circuit, a server case and a server system, which are used for monitoring an environment state in the case, and cutting off a system power supply in time when the environment state is abnormal so as to prevent the further deterioration of faults in the server case.
In a first aspect, an embodiment of the present invention provides a device status monitoring circuit, including:
the system comprises at least one sensing module and a processing module corresponding to the sensing module;
the sensing module is used for detecting environmental parameters in the case, converting the environmental parameters into electric signals and transmitting the electric signals to the input end of the corresponding processing module;
the processing module is used for processing the electric signal output by the sensing module and outputting the electric signal corresponding to the environmental state to the substrate management controller through the output end of the processing module, so that the substrate management controller determines the environmental state according to the electric signal corresponding to the environmental state and controls the system power supply to be turned off when the environmental state is abnormal. Therefore, the server fault can be prevented from further worsening, and the safety performance of the server chassis is improved.
Optionally, the sensing module includes smoke sensors, and the processing module includes first processing circuits electrically connected to the smoke sensors in a one-to-one correspondence manner; the smoke sensor is used for detecting the smoke concentration in the case, converting the smoke concentration into a first electric signal and transmitting the first electric signal to the input end of the first processing circuit; the first processing circuit is used for outputting an electric signal corresponding to the smoke state to the substrate management controller through the output end of the first processing circuit after processing the first electric signal, so that the substrate management controller determines the smoke state according to the electric signal corresponding to the smoke state, and controls the system power supply to be turned off when the smoke state is abnormal. Therefore, the server mainboard short circuit can be prevented from causing further deterioration of faults, and the safety performance of the server chassis is improved.
Optionally, the first processing circuit is specifically configured to process the first electrical signal, and output an electrical signal corresponding to the smoke state to the baseboard management controller through its output terminal based on a reset signal of the baseboard management controller; the first processing circuit is used for keeping outputting an electric signal corresponding to the smoke state abnormity after the smoke state abnormity and before the reset signal is received; and outputting an electric signal corresponding to the smoke state being normal after the smoke state is abnormally changed into the smoke state being normal and the reset signal is received. Therefore, after the smoke state is abnormal, the first processing circuit outputs an electric signal corresponding to the abnormal smoke state according to the first electric signal output by the smoke sensor, and the electric signal corresponding to the abnormal smoke state is kept before a reset signal is received no matter the smoke state is continuously abnormal or the smoke state is converted into normal, so that a worker is reminded of finding the abnormal smoke state in time.
Optionally, the first processing circuit includes a comparator and a flip-flop; the output end of the smoke sensor is electrically connected with the non-inverting input end of the comparator, and the inverting input end of the comparator is connected with reference voltage; the output end of the comparator is electrically connected with the set end of the trigger, the reset end of the trigger is electrically connected with the substrate management controller, and the trigger is used for outputting an electric signal corresponding to the smoke state according to an input signal of the reset end and an output signal of the comparator.
Optionally, the first processing circuit further includes a first voltage dividing circuit, the first voltage dividing circuit includes a first resistor and a second resistor, the first resistor and the second resistor are connected in series between the power supply and the ground terminal, and a common terminal of the first resistor and the second resistor is electrically connected to the output terminal of the smoke sensor; wherein the output voltage of the common end of the first resistor and the second resistor is less than the reference voltage. In this way, the first electric signal output by the smoke sensor is stable in a normal smoke state.
Optionally, the trigger includes an RS or a non-trigger.
Optionally, the sensing module includes at least one temperature sensor, and the processing module includes a second processing circuit electrically connected to the temperature sensor; the second processing circuit is used for outputting an electric signal corresponding to the temperature state to the substrate management controller according to the second electric signal output by the temperature sensor, so that the substrate management controller determines the temperature state according to the electric signal corresponding to the temperature state and controls the system power supply to be turned off when the temperature state is abnormal. Therefore, the monitoring of the temperature state in the case can be realized, and then when the smoke monitoring is difficult to work, the monitoring of whether the local short circuit condition exists in the case is realized through the monitoring of the temperature in the case, so that when the temperature state is abnormal, the power supply of the baseboard management controller control system is turned off, the further deterioration of the fault caused by the short circuit of the server mainboard is further prevented, and the safety performance of the server case is improved.
Optionally, the sensing module includes a smoke sensor and a temperature sensor, the smoke sensor is an MEMS gas sensor, the temperature sensor includes a diode, and the MEMS gas sensor and the diode are integrated into a single composite sensor. Compared with an optical sensor, the MEMS gas sensor has the remarkable advantage of small volume, and the composite sensor designed by the MEMS gas sensor is small in size and can be flexibly placed at each position of a case.
Optionally, the processing module includes a first processing circuit electrically connected to the smoke sensors in a one-to-one correspondence, and further includes a second processing circuit electrically connected to the temperature sensor; the first processing circuit, the second processing circuit and the composite sensor are integrated on the PCB, so that wiring in a server case is reduced; or the like, or, alternatively,
the first processing circuit and the second processing circuit are integrated on the PCB, the composite sensor is arranged at a set position of the case, the composite sensor is respectively connected with the first processing circuit and the second processing circuit through cables, and the set position comprises at least one of a hard disk, a memory, a processor, a GPU (graphics processing unit) board card, a fan and an air outlet. Because the hard disk, the memory, the processor, the GPU board card and the like all comprise high-power devices, the current consumption is high, short circuit or burnout phenomena are easy to occur, and the local short circuit or burnout phenomena of circuits in the case can be monitored in time by arranging the composite sensor at the position. When the smoke concentration is too high, the smoke concentration at the positions of the fan and the air outlet rises quickly, so that the composite sensor is arranged at the positions of the fan and the air outlet, and the phenomenon of local short circuit or burnout of a circuit in the case can be monitored in time.
Optionally, the chassis state monitoring circuit further includes a communication interface circuit, and the output end of the first processing circuit and the output end of the second processing circuit are both connected to the substrate management controller through the communication interface circuit.
In a second aspect, an embodiment of the present invention further provides a server chassis, including the chassis state monitoring circuit of the first aspect; the base plate management controller is in communication connection with the case state detection circuit and used for determining the smoke state according to the electric signals corresponding to the smoke state and controlling the complex programmable logic device to turn off a system power supply of the server when the smoke state is abnormal. Thus, the short-circuit failure of the main board is prevented from further deteriorating.
Optionally, the chassis state monitoring circuit further includes at least one temperature sensor and a second processing circuit electrically connected to the temperature sensor, and the substrate management controller is further configured to determine a temperature state according to an electrical signal corresponding to the temperature state, and control the complex programmable logic device to turn off a system power supply of the server when the temperature state is abnormal. Thus, the mainboard short-circuit fault is prevented from further worsening.
Optionally, the baseboard management controller is further configured to receive a reset instruction input by a user, and output a reset signal to the first processing circuit according to the reset instruction, so that the first processing circuit processes the first electrical signal and outputs an electrical signal corresponding to the environmental state to the baseboard management controller through its output terminal based on the reset signal.
In a third aspect, an embodiment of the present invention further provides a server system, including the server chassis in the second aspect, and further including a remote monitoring module, where the remote monitoring module is in remote communication connection with the baseboard management controller, and the baseboard management controller is configured to send an exception notification to the remote monitoring module when the environmental status is abnormal. Therefore, after receiving the abnormal notification, the background system management personnel can correspondingly check the case and timely process the case.
The case state monitoring circuit, the server case and the server system are used for detecting environmental parameters in the case through the sensing module and converting the environmental parameters into electric signals to be transmitted to the input end of the corresponding processing module; the processing module is used for processing the electric signals output by the sensing module and outputting the electric signals corresponding to the environmental state to the substrate management controller through the output end of the processing module, so that the substrate management controller determines the environmental state according to the electric signals corresponding to the environmental state, and controls to turn off a system power supply when the environmental state is abnormal, thereby preventing the server fault from further worsening and improving the safety performance of the server case.
Drawings
Fig. 1 is a schematic structural diagram of a circuit for detecting a status of a chassis according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another chassis status monitoring circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another chassis status monitoring circuit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the input and output of the RS nor flip-flop under a normal smoke condition according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating the input and output of the RS or NOR flip-flop under the abnormal smoke condition according to the embodiment of the present invention;
fig. 6 is a schematic diagram of the RS or nor flip-flop input/output before the abnormal smoke state provided by the embodiment of the present invention is changed into the normal smoke state and reset;
fig. 7 is a schematic diagram illustrating an input and an output of an RS nor flip-flop when an abnormal smoke state is converted into a normal smoke state and reset triggering is performed according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another chassis status monitoring circuit according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a server chassis according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a server system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The embodiment of the present invention provides a chassis state monitoring circuit, fig. 1 is a schematic structural diagram of the chassis state monitoring circuit provided in the embodiment of the present invention, and referring to fig. 1, the chassis state monitoring circuit 100 includes: at least one sensing module 101 and a processing module 102 corresponding to the sensing module 101; the sensing module 101 is used for detecting environmental parameters in the chassis and converting the environmental parameters into electric signals to be transmitted to the input end of the corresponding processing module 102; the processing module 102 is configured to process the electrical signal output by the sensing module 101, and then output an electrical signal corresponding to the environmental status to the baseboard management controller 200 through its own output terminal, so that the baseboard management controller determines the environmental status according to the electrical signal corresponding to the environmental status, and controls to turn off the system power supply when the environmental status is abnormal.
In this embodiment, the chassis may be a server chassis, and the chassis state monitoring circuit 100 may be configured to monitor at least an environmental state in the server chassis. The environmental conditions may be, but are not limited to, smoke conditions, temperature conditions, and humidity conditions, and the environmental parameters may be, but are not limited to, smoke parameters, temperature parameters, and humidity parameters. The smoke parameter may be smoke concentration, the temperature parameter may be temperature, and the humidity parameter may be humidity.
The environment state comprises an abnormal environment state and a normal environment state, wherein the abnormal environment state can correspond to the case that the smoke concentration in the case is greater than the set concentration, the temperature is greater than the set temperature, and the humidity is greater than the set humidity, and the normal environment state can correspond to the case that the smoke concentration in the case is less than or equal to the set concentration, the temperature is less than or equal to the set temperature, and the humidity is less than or equal to the set humidity.
The sensing module 101 is used for detecting environmental parameters of the chassis, and when a fault occurs in the chassis, for example, an electronic device or a PCB is locally burned, the smoke concentration will become high and the temperature will also rise.
The case state monitoring circuit 100 further includes a processing module 102, the processing module 102 may be electrically connected to the sensing module 101 correspondingly, the sensing module 101 outputs an electrical signal according to an environmental parameter, optionally, the electrical signal output by the sensing module 101 includes a high level signal and a low level signal, one of the high level signal and the low level signal is a normal environmental state corresponding to the environmental state, and the other one of the high level signal and the low level signal is an environmental state corresponding to the environmental state, and the processing module 102 processes the electrical signal output by the sensing module 101 and outputs the processed electrical signal corresponding to the environmental state.
Optionally, the electrical signal corresponding to the environmental state and output by the processing module 102 after processing the electrical signal output by the sensing module 101 includes a high level signal and a low level signal, where one of the high level signal and the low level signal corresponds to the environmental state being a normal environmental state, and the other corresponds to the environmental state being an abnormal environmental state. In this embodiment, when the environmental state is abnormal, the processing module 102 processes the electrical signal output by the sensing module 101 and then outputs an electrical signal corresponding to the environmental state abnormality to the baseboard management controller 200, so that the baseboard management controller 200 determines that the environmental state is the abnormal environmental state according to the electrical signal corresponding to the abnormal environmental state, and then timely controls to turn off the system power supply, thereby preventing the server fault from further deteriorating.
Optionally, the chassis state detection circuit includes a plurality of sensing modules 101 and a plurality of processing modules 102, where the sensing modules 101 may be disposed at a plurality of positions of the chassis, so as to monitor environmental states at the plurality of positions in the chassis.
The case state monitoring circuit of the embodiment is used for detecting environmental parameters in a case through the sensing module and converting the environmental parameters into electric signals to be transmitted to the input end of the corresponding processing module; the processing module is used for processing the electric signals output by the sensing module and outputting the electric signals corresponding to the environmental state to the substrate management controller through the output end of the processing module, so that the substrate management controller determines the environmental state according to the electric signals corresponding to the environmental state, and controls to turn off a system power supply when the environmental state is abnormal, thereby preventing the server fault from further worsening and improving the safety performance of the server case.
Fig. 2 is a schematic structural diagram of a chassis status detection circuit according to an embodiment of the present invention, and referring to fig. 2, the sensing module includes a smoke sensor 110, and the processing module includes a first processing circuit 120 electrically connected to the smoke sensor 110 in a one-to-one correspondence; the smoke sensor 110 is configured to detect a smoke concentration in the chassis, convert the smoke concentration into a first electrical signal, and transmit the first electrical signal to an input end of the first processing circuit 120; the first processing circuit 120 is configured to process the first electrical signal and output an electrical signal corresponding to the smoke state to the baseboard management controller 200 through its output end, so that the baseboard management controller 200 determines the smoke state according to the electrical signal corresponding to the smoke state, and controls to turn off the system power supply when the smoke state is abnormal.
In this embodiment, the chassis may be a server chassis, and the chassis state monitoring circuit 100 may be configured to monitor at least a smoke state in the server chassis. The smoke state comprises an abnormal smoke state and a normal smoke state, wherein the abnormal smoke state corresponds to the condition that the smoke concentration in the case is greater than the set concentration, and the normal smoke state corresponds to the condition that the smoke concentration in the case is less than or equal to the set concentration.
The smoke sensor 110 is used for detecting the smoke concentration in the case, the smoke sensor 110 may be a gas sensor, the gas sensor includes a gas sensitive material, when an electronic device or a PCB board exists in the case and is locally burned, the PCB board or the package of the electronic device is heated and decomposed to generate smoke, and the smoke contains aromatic hydrocarbon, acetone and phenol gas generated after the electronic device is heated to be decomposed, and is volatilized and released along with the temperature rise of the low-melting-point metal and resin carbonized particles. Along with the increase of the smoke concentration of the short-time cabinet, the resistance value of the gas-sensitive material of the gas sensor is reduced, and the electric signal output by the smoke sensor 110 changes.
The case state monitoring circuit 100 further includes a first processing circuit 120, the first processing circuit 120 may be electrically connected to the smoke sensor 110 in a one-to-one correspondence manner, the smoke sensor 110 outputs a first electrical signal according to the smoke concentration, optionally, the first electrical signal includes a high level signal and a low level signal, one of the high level signal and the low level signal corresponds to a smoke state being a normal smoke state, and the other corresponds to a smoke state being an abnormal smoke state, and the first processing circuit 120 processes the first electrical signal and outputs a processed electrical signal corresponding to the smoke state.
Optionally, the electric signals corresponding to the smoke state output after the first processing circuit 120 processes the first electric signal include a high level signal and a low level signal, where one of the high level signal and the low level signal corresponds to the smoke state being a normal smoke state, and the other corresponds to the smoke state being an abnormal smoke state. In this embodiment, when the smoke state is abnormal, the first processing circuit 120 outputs the electric signal corresponding to the abnormal smoke state to the substrate management controller after processing the first electric signal output by the smoke sensor 110, so that the substrate management controller 200 determines that the smoke state is the abnormal smoke state according to the electric signal corresponding to the abnormal smoke state, and then timely controls to turn off the system power supply, thereby preventing the fault from further deteriorating due to the short circuit of the server motherboard, preventing the spray system of the data center where the server chassis is located from being triggered due to the excessive smoke concentration, and avoiding the damage to the server of the whole data center.
Optionally, the chassis state detection circuit includes a plurality of smoke sensors 110 and a plurality of first processing circuits 120, where the smoke sensors 110 may be disposed at a plurality of positions of the chassis, so as to monitor smoke states at a plurality of positions in the chassis.
The machine case state monitoring circuit of this embodiment, detect the smog concentration of quick-witted incasement through smoke transducer, export first signal of telecommunication to first processing circuit according to smog concentration, first processing circuit handles the back to first signal of telecommunication and exports the signal of telecommunication to the base plate management controller corresponding to the smog state through self output, make base plate management controller confirm the smog state according to the signal of telecommunication corresponding to the smog state, and when the smog state is unusual, the control shutoff system power, prevent that server mainboard short circuit from leading to the trouble further to worsen, improve the security performance of server machine case.
On the basis of the above technical solution, the first processing circuit 120 is specifically configured to process the first electrical signal and output an electrical signal corresponding to the smoke state to the substrate management controller 200 through its output terminal based on the reset signal of the substrate management controller 200;
the first processing circuit 120 is configured to keep outputting an electrical signal corresponding to the smoke status anomaly after the smoke status anomaly and before receiving the reset signal; and outputting an electric signal corresponding to the smoke state being normal after the smoke state is abnormally changed into the smoke state being normal and the reset signal is received.
Specifically, the first processing circuit 120 includes a reset signal receiving terminal. After the smoke state is abnormal, the first processing circuit 120 outputs an electric signal corresponding to the abnormal smoke state according to the first electric signal output by the smoke sensor 110, and keeps the electric signal corresponding to the abnormal smoke state before receiving the reset signal no matter the smoke state is continuously abnormal or the smoke state is changed into normal, so as to remind a worker to find the abnormal smoke state in time. After knowing the abnormal condition of the smoke state, the worker processes the abnormal condition and then issues a reset instruction to the substrate management controller, after receiving the reset instruction of the worker, the substrate management controller outputs a reset signal to the first processing circuit 120, the reset signal is used for resetting a circuit structure in the first processing circuit 120, and after receiving the reset signal, the first processing circuit 120 monitors the smoke state again by an electric signal which is output by the first processing circuit 120 and corresponds to the normal smoke state after the smoke state is the normal state.
Fig. 3 is a schematic structural diagram of another chassis status monitoring circuit according to an embodiment of the present invention, and referring to fig. 3, optionally, the first processing circuit includes a comparator 121 and a flip-flop 122; the output end of the smoke sensor 110 is electrically connected with the non-inverting input end of the comparator 121, and the inverting input end of the comparator 121 is connected with a reference voltage; the output terminal of the comparator 121 is electrically connected to the set terminal Se of the flip-flop 122, the reset terminal Re of the flip-flop 122 is electrically connected to the bmc 200, and the flip-flop 122 is configured to output an electrical signal corresponding to the smoke state according to an input signal of the reset terminal Re and an output signal of the comparator 121.
Specifically, the voltage at the output terminal of the smoke sensor 110 increases with the increase of the smoke concentration, and the output terminal of the smoke sensor 110 is connected to the non-inverting input terminal of the comparator 121, so that when the smoke concentration changes, the voltage input at the non-inverting input terminal of the comparator 121 changes, and the fixed reference voltage is input at the inverting input terminal of the comparator 121. When the smoke state is a normal smoke state, that is, the smoke concentration is less than or equal to the set concentration, the voltage of the first electrical signal output by the smoke sensor 110 is less than the reference voltage, and the comparator 121 outputs a low level signal. When the smoke density is so large as to exceed the set smoke density, the voltage of the first electrical signal output by the smoke sensor 110 is greater than the reference voltage, and the comparator 121 outputs a high-level signal.
The first processing circuit further includes a flip-flop 122, the flip-flop 122 includes a set terminal Se and a reset terminal Re, the set terminal Se of the flip-flop 122 is connected to the output terminal of the comparator 121, and the high-low level signal output by the comparator 121 is input to the set terminal Se of the flip-flop 122. The reset terminal Re of the flip-flop 122 is connected to the bmc 200, and can further receive a reset signal sent by the bmc 200. Optionally, after receiving the electrical signal corresponding to the smoke state anomaly every time, the bmc 200 outputs a reset signal to the reset terminal Re of the flip-flop 122 according to the received reset instruction, so that the flip-flop 122 is reset once. After the smoke state is abnormal, the first processing circuit outputs an electric signal corresponding to the abnormality of the smoke state according to the first electric signal output by the smoke sensor 110, and keeps the output signal unchanged until the trigger 122 receives the reset signal, and after the trigger 122 receives the reset signal, the signal output by the first processing circuit changes according to the change of the smoke state.
Optionally, the flip-flop 122 includes an RS or a nor flip-flop, and fig. 4 is an input and output schematic diagram of the RS or the nor flip-flop in a normal smoke state according to the embodiment of the present invention. Referring to fig. 3 and 4, the RS nor-flip-flop includes a first nor cell 1221 and a second nor cell 1222, wherein a first input terminal of the first nor cell 1221 serves as a set terminal Se, a second input terminal of the first nor cell 1221 is electrically connected to an output terminal of the second nor cell 1222, a first input terminal of the second nor cell 1222 is connected to an output terminal of the first nor cell 1221, a second input terminal of the second nor cell 1222 serves as a reset terminal Re of the RS nor-flip-flop, and an output terminal of the first nor cell 1221 serves as an output terminal of the RS nor-flip-flop. In a normal smoke state, the first electrical signal output by the comparator is a low level signal 0, so that the input signal of the set end Se of the high level signal of the flip-flop is a low level signal 0. The input signal of the reset terminal Re of the flip-flop is a low level signal 0, and the output terminal of the flip-flop is pulled up to a high level signal 1, so that the output signal of the second nor unit 1222 is the low level signal 0, and the output of the first nor unit 1221 remains the high level signal 1.
Fig. 5 is a schematic diagram of the RS or nor flip-flop input/output in the abnormal smoke state according to the embodiment of the present invention. Referring to fig. 3 and 5, when the smoke state is abnormal, the first electrical signal output by the comparator 121 is a high level signal 1, so the signal at the set end Se of the flip-flop is a high level signal 1, the output signal at the output end of the first nor unit 1221, that is, the output end of the RS flip-flop, is a low level signal 0, the input signals at the first input end and the second input end (that is, the reset end Re) of the second nor unit 1222 are both low level signals 0, so the output signal of the second nor unit 1222 is a high level signal 1, and correspondingly, the input signal at the second input end of the first nor unit 1221 is a high level signal 1.
Fig. 6 is a schematic diagram of the RS or nor flip-flop input/output before the abnormal smoke state is changed to the normal smoke state and reset according to the embodiment of the present invention. With reference to fig. 3 and 6, after the smoke state is changed from the abnormal state to the normal state, the first electrical signal output by the comparator 121 is the low level signal 0, so that the input signal of the Se end of the flip-flop is the low level signal 0, and the signals of the ports of the flip-flop are the same as the abnormal smoke state and remain unchanged, so that the output signal of the flip-flop is still the low level signal 0, and thus when the smoke state is abnormal and is not reset (i.e., when the reset signal is not received), the output of the first processing circuit remains unchanged, so that the signal received by the substrate management controller 200 remains unchanged, and further, the worker can know the abnormal smoke state in time.
Fig. 7 is a schematic diagram of the RS or nor flip-flop input/output when the abnormal smoke state is changed to the normal smoke state and reset triggering is performed according to the embodiment of the present invention. Alternatively, the reset trigger may be a key trigger, and referring to fig. 3 and fig. 7, in the reset trigger, an input signal of the reset terminal Re of the trigger is a high level signal 1, and the first input terminal of the second nor unit 1222 is kept unchanged, so that an output signal of the output terminal of the second nor unit 1222 is a low level signal 0, and accordingly, an input signal of the second input terminal of the first nor unit 1221 is changed to a low level signal 0, and an output signal of the first nor unit 1221 is changed to a high level signal 1, that is, an electrical signal corresponding to a normal smoke state.
After the abnormal smoke state is changed into the normal smoke state and a reset signal is received (the received reset signal can be considered that a signal received by a set end of the trigger is changed from a high-level signal 1 to a low-level signal 0), the working process of the RS or the non-trigger is the same as that of fig. 4, and details are not repeated here.
With continued reference to fig. 3, optionally, the first processing circuit 120 further includes a first voltage dividing circuit 123, the first voltage dividing circuit includes a first resistor R1 and a second resistor R2, the first resistor R1 and the second resistor R2 are connected in series between the power source VCC and the ground terminal GND, and a common terminal of the first resistor R1 and the second resistor R2 is electrically connected to the output terminal of the smoke sensor 110; wherein the output voltage of the common end of the first resistor R1 and the second resistor R2 is less than the reference voltage.
Specifically, in a normal smoke state, that is, when the smoke concentration is less than or equal to the set concentration, the voltage output by the smoke sensor 110 may be unstable, in this embodiment, the first voltage dividing circuit 123 may provide an initial voltage to the output terminal of the smoke sensor 110, where the initial voltage is equal to the output voltage at the common end of the first resistor R1 and the second resistor R2, so that the first electrical signal output by the smoke sensor 110 is stable in the normal smoke state. The initial voltage is less than the reference voltage at the inverting input terminal of the comparator 121, so that the comparator 121 outputs a low level signal in a normal smoke state. When the smoke concentration is abnormal and is greater than the set concentration, the voltage of the first electrical signal output by the smoke sensor 110 is greater than the initial voltage and is also greater than the reference voltage, the voltage of the first electrical signal input by the non-inverting input terminal of the comparator 121 is greater than the reference voltage input by the inverting input terminal, and the comparator 121 outputs a high level signal.
With continued reference to fig. 3, optionally, the first processing circuit 120 further includes a second voltage dividing circuit 124, the second voltage dividing circuit 124 includes a third resistor R3 and a fourth resistor R4, the third resistor R3 and the fourth resistor R4 are connected in series between the power supply VCC and the ground terminal GND, and a common terminal of the third resistor R3 and the fourth resistor R4 is electrically connected to the inverting input terminal of the comparator 121. The second voltage dividing circuit 124 is configured to input a reference voltage to an inverting input terminal of the comparator 121. Specifically, by setting the resistance values of the third resistor R3 and the fourth resistor R4, the reference voltage output by the second voltage dividing circuit 124 can be made equal to the voltage of the first electrical signal when the smoke density is equal to the set density.
Continuing to refer to fig. 3, optionally, the smoke sensor includes a first end a, a second end B, a third end G, and a fourth end F, where the first end a is connected to the power source VCC through a fifth resistor R5, the second end B is used as an output end of the smoke sensor, the third end G is grounded, and the fourth end F is connected to the power source VCC.
With continued reference to fig. 3, the flip-flop 122 is connected to the bmc 200 through a communication interface circuit, and the chassis status monitoring circuit receives a signal of the power VCC, and the ground END is provided by the bmc 200, so that the first processing circuit and the bmc 200 can communicate through an I2C protocol.
Although the smoke sensor has a wide monitoring range, smoke monitoring is difficult to achieve when a circuit in a case is not burnt due to local short circuit. Therefore, in the following embodiments of the present invention, the chassis state detection circuit is further configured to include a temperature sensor and a corresponding second processing circuit to monitor the temperature.
Fig. 8 is a schematic structural diagram of another chassis status monitoring circuit according to an embodiment of the present invention, and referring to fig. 8, optionally, the sensing module includes a temperature sensor 130, and the processing module includes a second processing circuit 140 electrically connected to the temperature sensor 130; the second processing circuit 140 is configured to output an electrical signal corresponding to the temperature state to the bmc 200 according to the second electrical signal output by the temperature sensor 130, so that the bmc 200 determines the temperature state according to the electrical signal corresponding to the temperature state, and controls to turn off the system power supply when the temperature state is abnormal.
Alternatively, the temperature sensor 130 includes a diode, and the change in the ambient temperature can be detected using the temperature characteristic of the P-N junction of the diode. The second processing circuit 140 is connected to a diode, and when the temperature changes, the voltage of the second electrical signal output from the diode to the second processing circuit 140 changes. The second processing circuit 140 outputs an electrical signal corresponding to the temperature state to the bmc 200 according to the second voltage signal output by the temperature sensor 130, so that the bmc 200 determines the temperature state according to the electrical signal corresponding to the temperature state and controls the power on/off of the system according to the temperature state. Specifically, when the second processing circuit 140 outputs an electrical signal corresponding to the temperature state abnormality to the substrate management controller 200, the substrate management controller 200 determines that the temperature state abnormality is present according to the electrical signal corresponding to the temperature state abnormality, and controls the system power to be turned off; when the second processing circuit 140 outputs the electrical signal corresponding to the normal temperature state to the bmc 200, the bmc 200 determines that the temperature state is normal according to the electrical signal corresponding to the normal temperature state, and controls the system power to keep on outputting. In this embodiment, the case state monitoring circuit 100 is configured to include the temperature sensor 130 and the second processing circuit 140, so that the temperature state in the case can be monitored, and further, when the smoke monitoring is difficult to be effective, the monitoring of whether a local short circuit condition exists in the case is realized by monitoring the temperature in the case, so that when the temperature state is abnormal, the power supply of the 200 control systems of the baseboard management controller is turned off, thereby further preventing the fault from further deteriorating due to the short circuit of the server motherboard, and improving the safety performance of the server case.
Optionally, the chassis status detecting circuit includes a plurality of smoke sensors 110 and a plurality of second processing circuits 140, wherein the temperature sensors 130 may be disposed at a plurality of positions of the chassis, so as to monitor temperature statuses at a plurality of positions in the chassis, wherein the plurality of second processing circuits 140 may be integrated on one circuit board to form a plurality of temperature monitoring circuits 141, and optionally, the plurality of temperature monitoring circuits may adopt EMC1438 chips.
On the basis of the above technical solution, optionally, the smoke sensor 110 is an MEMS gas sensor, the temperature sensor 130 includes a diode, and the MEMS gas sensor and the diode are integrated into a composite sensor.
Specifically, the smoke sensor 110 employs a GM2XX series gas sensor of the MEMS type. The MEMS gas sensor consists of a Si-based micro-hotplate based on an MEMS process and a metal oxide semiconductor gas sensitive material with lower conductivity in clean air. The electrical conductivity of the smoke sensor 110 changes when the gas to be detected is present in the ambient air, and the higher the concentration of the gas, the higher the electrical conductivity of the sensor. The MEMS gas sensor has the characteristics of small size, low power consumption, high sensitivity and quick response recovery. The size of the diode is also smaller, and the MEMS gas sensor and the diode can be integrated on a circuit board to form an integrated composite sensor, so that one composite sensor can simultaneously realize smoke, temperature and detection. The composite sensor has small size and can be flexibly placed at each position of a case. Alternatively, a MEMS gas sensor and a diode are integrated on a circuit board to form an integrated composite sensor, the case state monitoring circuit 100 may include a plurality of composite sensors, and the plurality of composite sensors may be respectively disposed at different positions of the case. Fig. 8 illustrates a structure in which the chassis state monitoring circuit includes n composite sensors, and accordingly, the chassis state monitoring circuit includes n first processing circuits 120, wherein a first end a of the first smoke sensor S1 is connected to a first receiving end A1 of the first processing circuit, a second end B of the first smoke sensor S1 is connected to a second receiving end B1 of the first processing circuit, a third end C of the first smoke sensor S1 is connected to a third receiving end C1 of the first processing circuit, and a fourth end G of the first smoke sensor S1 is connected to a fourth receiving end G1 of the first processing circuit; the first end A of the nth smoke sensor Sn is connected with the first receiving end An of the nth first processing circuit, the second end B of the nth smoke sensor Sn is connected with the second receiving end Bn of the nth first processing circuit, the third end C of the nth smoke sensor Sn is connected with the third receiving end Cn of the nth first processing circuit, and the fourth end G of the nth smoke sensor Sn is connected with the fourth receiving end Gn of the nth first processing circuit. An anode P of the first temperature sensor D1 is connected with a first anode signal receiving end P1 of the second processing circuit, and a cathode N of the first temperature sensor D1 is connected with a first cathode signal receiving end N1 of the second processing circuit; an anode P of the nth temperature sensor Dn is connected to an nth anode signal receiving terminal Pn of the second processing circuit, and a cathode N of the nth temperature sensor Dn is connected to an nth cathode signal receiving terminal Nn of the second processing circuit.
Specifically, in an optional embodiment of the present invention, the first processing circuit 120 and the second processing circuit 140 are integrated on a PCB, the composite sensor is respectively connected to the first processing circuit 120 and the second processing circuit 140 through a cable 150, the composite sensor is disposed at a set position of the chassis, and the set position includes at least one of a hard disk, a memory, a processor, a GPU board, a fan, and an air outlet.
Specifically, the composite sensor may be soldered at the corresponding connection points of the first processing circuit 120 and the second processing circuit 140 through cables. Because the hard disk, the memory, the processor, the GPU board card and the like all comprise high-power devices, the current consumption is high, and the phenomenon of short circuit or burnout is easy to occur, and the local short circuit or burnout phenomenon of the circuit in the case can be monitored in time by arranging the composite sensor at the position. When the smoke concentration is too high, the smoke concentration at the positions of the fan and the air outlet rises quickly, so that the composite sensor is arranged at the positions of the fan and the air outlet and can also monitor the local short circuit or burnout phenomenon of the circuit in the case in time.
In another optional embodiment of the present invention, the first processing circuit 120, the second processing circuit 140 and the composite sensor are integrated on a PCB, that is, the composite sensor may be connected to the first processing circuit 120 and the second processing circuit 140 without cables, but the composite sensor is directly disposed on the same PCB as the first processing circuit 120 and the second processing circuit 140, thereby reducing the wiring in the server chassis.
With continued reference to fig. 8, the enclosure status monitoring circuit 100 further includes a communication interface circuit, and the output terminal of the first processing circuit 120 and the output terminal of the second processing circuit 140 are connected to the bmc 200 through the communication interface circuit.
Optionally, the communication interface circuit may be an I2C expansion circuit or a GPIO expansion circuit, or may be another communication interface circuit, which is not specifically limited herein.
Fig. 9 is a schematic structural diagram of a server chassis according to an embodiment of the present invention, and referring to fig. 9, the server chassis includes a chassis state monitoring circuit 100 according to any embodiment of the present invention; the server further comprises a substrate management controller 200 and a complex programmable logic device 300, wherein the substrate management controller 200 is in communication connection with the chassis state monitoring circuit 100, and the substrate management controller 200 is used for determining a smoke state according to an electric signal corresponding to the smoke state and controlling the complex programmable logic device 300 to turn off a system power supply of the server when the smoke state is abnormal. The baseboard management controller 200 and the miscellaneous programmable logic device 300 are both located on the motherboard of the server.
Specifically, the bmc 200 may access the chassis status monitoring circuit 100 by setting a communication protocol (for example, an I2C protocol), and further obtain an electrical signal corresponding to the smoke status, so as to determine the smoke status according to the electrical signal corresponding to the smoke status, and control the complex programmable logic device 300 to turn off the system power supply of the server when the smoke status is abnormal, so as to prevent the motherboard short-circuit fault from further deteriorating.
With reference to fig. 8 and 9, the chassis status monitoring circuit 100 further includes at least one temperature sensor 130 and a second processing circuit 140 electrically connected to the temperature sensor 130, and the bmc 200 is further configured to determine a temperature status according to an electrical signal corresponding to the temperature status, and control the complex programmable logic device 300 to turn off the system power of the server when the temperature status is abnormal.
Specifically, the bmc 200 may access the chassis status monitoring circuit 100 through a set communication protocol (for example, an I2C protocol), further obtain an electrical signal corresponding to the temperature status, determine the temperature status according to the electrical signal corresponding to the temperature status, and control the complex programmable logic device 300 to turn off the system power supply of the server when the temperature status is abnormal, so as to prevent the motherboard short-circuit fault from further deteriorating.
On the basis of the above technical solution, the bmc is further configured to receive a reset instruction input by a user, and output a reset signal to the first processing circuit 120 according to the reset instruction, so that the first processing circuit 120 processes the first electrical signal and outputs an electrical signal corresponding to the smoke state to the bmc 200 through its output terminal based on the reset signal.
Specifically, the first processing circuit 120 includes a comparator 121 and a trigger 122, the bmc may output a reset signal to a reset terminal Re of the trigger 122 according to a reset instruction, and a working process of the chassis state monitoring circuit 100 according to the present invention may be referred to in a process that the first processing circuit 120 processes the first electrical signal and outputs an electrical signal corresponding to a smoke state to the bmc 200 through its own output terminal based on the reset signal, and details thereof are not repeated herein.
Fig. 10 is a schematic structural diagram of a server system provided in an embodiment of the present invention, and referring to fig. 10, optionally, the server system includes the server chassis 10 in any embodiment of the present invention, and further includes a remote monitoring module 20, where the remote monitoring module 20 is in remote communication connection with the baseboard management controller 200, and the baseboard management controller is configured to send an exception notification to the remote monitoring module 20 when an environmental state is abnormal.
With reference to fig. 8 and 9, specifically, the bmc has a network management interface 400 for remote communication, and the remote monitoring module 20 is connected to the bmc through the network management interface 400 for remote communication, so as to remotely monitor the server status. When the environmental state is abnormal, the baseboard management controller sends an abnormal notification to the remote monitoring module 20, so that a background system manager can perform corresponding inspection and timely process on the chassis after receiving the abnormal notification. In another optional embodiment of the present invention, when the temperature state is abnormal, the bmc sends an abnormal notification to the remote monitoring module 20, so that a back-end system manager receives the abnormal notification and then performs corresponding inspection on the chassis and processes the chassis in time.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A cabinet condition monitoring circuit, comprising: the system comprises at least one sensing module and a processing module correspondingly connected with the sensing module;
the sensing module is used for detecting environmental parameters in the case, converting the environmental parameters into electric signals and transmitting the electric signals to the input end corresponding to the processing module;
the processing module is used for processing the electric signals output by the sensing module and outputting electric signals corresponding to the environmental state to the substrate management controller through the output end of the processing module, so that the substrate management controller determines the environmental state according to the electric signals corresponding to the environmental state and controls the system power supply to be switched off when the environmental state is abnormal.
2. The chassis state monitoring circuit of claim 1, wherein the sensing module includes a smoke sensor, and the processing module includes a first processing circuit electrically connected to the smoke sensor in a one-to-one correspondence;
the smoke sensor is used for detecting the smoke concentration in the case, converting the smoke concentration into a first electric signal and transmitting the first electric signal to the input end of the first processing circuit;
the first processing circuit is used for outputting an electric signal corresponding to the smoke state to the substrate management controller through the output end of the first processing circuit after processing the first electric signal, so that the substrate management controller determines the smoke state according to the electric signal corresponding to the smoke state, and controls to turn off a system power supply when the smoke state is abnormal.
3. A cabinet state monitoring circuit according to claim 1 or 2, wherein the sensing module includes a temperature sensor, and the processing module includes a second processing circuit electrically connected to the temperature sensor; the second processing circuit is used for outputting an electric signal corresponding to the temperature state to the substrate management controller according to a second electric signal output by the temperature sensor, so that the substrate management controller determines the temperature state according to the electric signal corresponding to the temperature state, and controls to turn off a system power supply when the temperature state is abnormal.
4. The chassis state monitoring circuit according to claim 2, wherein the first processing circuit is specifically configured to process the first electrical signal and output an electrical signal corresponding to the smoke state to the bmc through its own output terminal based on a reset signal of the bmc;
the first processing circuit is used for keeping outputting an electric signal corresponding to the smoke state abnormity after the smoke state abnormity and before the reset signal is received; and outputting an electric signal corresponding to the smoke state being normal after the smoke state is abnormally changed into the smoke state being normal and the reset signal is received.
5. A cabinet state monitoring circuit according to claim 2 or 4, wherein the first processing circuit comprises a comparator and a flip-flop; the output end of the smoke sensor is electrically connected with the non-inverting input end of the comparator, and the inverting input end of the comparator is connected with a reference voltage; the output end of the comparator is electrically connected with the set end of the trigger, the reset end of the trigger is electrically connected with the substrate management controller, and the trigger is used for outputting an electric signal corresponding to the smoke state according to an input signal of the reset end and an output signal of the comparator.
6. The chassis condition monitoring circuit of claim 5, wherein the first processing circuit further comprises a first voltage divider circuit comprising a first resistor and a second resistor connected in series between a power supply and ground, a common terminal of the first resistor and the second resistor being electrically connected to the output terminal of the smoke sensor; wherein an output voltage of a common terminal of the first resistor and the second resistor is less than the reference voltage.
7. The chassis condition monitoring circuit of claim 1, wherein the sensing module comprises a smoke sensor and a temperature sensor, the smoke sensor is a MEMS gas sensor, the temperature sensor comprises a diode, and the MEMS gas sensor and the diode are integrated into a composite sensor.
8. The chassis condition monitoring circuit of claim 7, wherein the processing module includes a first processing circuit electrically coupled to the smoke sensors in a one-to-one correspondence, and further includes a second processing circuit electrically coupled to the temperature sensors;
the first processing circuit, the second processing circuit and the composite sensor are integrated on a PCB board; or the like, or, alternatively,
the first processing circuit and the second processing circuit are integrated on a PCB, the composite sensor is arranged at a set position of the case, the composite sensor is respectively connected with the first processing circuit and the second processing circuit through cables, and the set position comprises at least one of a hard disk, a memory, a processor, a GPU (graphics processing unit) board card, a fan and an air outlet.
9. A server chassis comprising the chassis condition monitoring circuit of any one of claims 1-8; the base plate management controller is in communication connection with the case state detection circuit and is used for determining an environment state according to an electric signal corresponding to the environment state and controlling the complex programmable logic device to turn off a system power supply of the server when the environment state is abnormal.
10. A server system comprising the server chassis of claim 9, further comprising a remote monitoring module in remote communication with the baseboard management controller, the baseboard management controller being configured to send an exception notification to the remote monitoring module when the environmental condition is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211598104.8A CN115658442A (en) | 2022-12-14 | 2022-12-14 | Case state monitoring circuit, server case and server system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211598104.8A CN115658442A (en) | 2022-12-14 | 2022-12-14 | Case state monitoring circuit, server case and server system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110825138A (en) * | 2019-10-09 | 2020-02-21 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Temperature control device in case |
| CN211297330U (en) * | 2020-01-19 | 2020-08-18 | 汕头市鼎翔电子科技有限公司 | Case capable of being remotely monitored and controlled |
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| CN112527590A (en) * | 2020-11-12 | 2021-03-19 | 宿州学院 | Computer temperature detection alarm device |
| CN115306692A (en) * | 2022-07-14 | 2022-11-08 | 深圳市海格金谷工业科技有限公司 | Method and control device for temperature alarm of compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110825138A (en) * | 2019-10-09 | 2020-02-21 | 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） | Temperature control device in case |
| CN211297330U (en) * | 2020-01-19 | 2020-08-18 | 汕头市鼎翔电子科技有限公司 | Case capable of being remotely monitored and controlled |
| CN111984094A (en) * | 2020-08-21 | 2020-11-24 | 广州大学华软软件学院 | Computer temperature detection system and device |
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