CN109614287B - Signal control device and method of double controllers - Google Patents
Signal control device and method of double controllers Download PDFInfo
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- CN109614287B CN109614287B CN201811480659.6A CN201811480659A CN109614287B CN 109614287 B CN109614287 B CN 109614287B CN 201811480659 A CN201811480659 A CN 201811480659A CN 109614287 B CN109614287 B CN 109614287B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3041—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is an input/output interface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/32—Monitoring with visual or acoustical indication of the functioning of the machine
- G06F11/324—Display of status information
- G06F11/327—Alarm or error message display
Abstract
The embodiment of the invention discloses a signal control device and a signal control method for double controllers. And sending a selection signal corresponding to the main controller to the selector according to the level types corresponding to the first level signal and the second level signal. The selector opens the corresponding data channel according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment. In the technical scheme, the detection part determines the control rights of the two controllers according to the level signal, and the determination mode is completely realized by hardware, so that the delay caused by software control or the influence caused by unstable software operation can be effectively reduced. And the selector opens the corresponding data channel according to the selection signal, thereby avoiding the occurrence of the competition hazard situation. And the orderly management between the double controllers is realized through the matching of the detection part and the selector.
Description
Technical Field
The invention relates to the technical field of storage servers, in particular to a signal control device and a signal control method for double controllers.
Background
In the design of a storage server, in order to ensure the stability of the operation of the server, a dual-control design is generally adopted, that is, two controllers exist to access terminal devices, such as a hard disk, a fan, a power supply, and the like.
In the prior art, in order to ensure the orderly work of two controllers, there are two main processing modes for the controllers. One way of handling is to simply connect the signals by wires. In the actual transmission process, due to different transmission paths, the double-control signal lines can cause competition hazards. For periodic signals, such as Pulse Width Modulation (PWM) signals for controlling the fan speed, and fan speed conversion (TACH) signals, although signals with the same frequency are output, the lines are connected together, and then a certain time difference exists between the front and the back, which results in periodic changes of the final control signal rather than a stable frequency.
Another way is to assign control by identifying the master and slave controllers through interaction between the control units on both controllers. However, the interaction between the control units has the problem of slow response, and the software running of the control units may cause unstable conditions, thereby causing control disorder of the dual controllers.
Therefore, how to implement ordered management between the dual controllers is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The embodiment of the invention aims to provide a signal control device and a signal control method for double controllers, which can realize ordered management between the double controllers so as to ensure the normal operation of terminal equipment.
In order to solve the above technical problem, an embodiment of the present invention provides a signal control apparatus for dual controllers, including a detecting unit and a selector;
the detection component is respectively connected with the first controller, the second controller and the selector and is used for receiving a first level signal sent by the first controller and receiving a second level signal sent by the second controller; sending a corresponding selection signal to the selector according to the level types corresponding to the first level signal and the second level signal;
the selector is respectively connected with the first controller and the second controller and is used for receiving a first control signal transmitted by the first controller and a second control signal transmitted by the second controller; and receiving the selection signal sent by the detection part, and opening a corresponding data channel according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment.
Optionally, the first level signal includes a first in-place level signal and a first operation level signal; the second level signal includes a second in-bit level signal and a second run level signal.
Optionally, the detecting component is a comparator.
Optionally, the number of the comparators is 2;
the first comparator is used for receiving a first bit level signal and a second bit level signal; the second comparator is configured to receive the first operating level signal and the second operating level signal.
Optionally, the detecting unit is specifically configured to determine whether the first bit level signal is smaller than the second bit level signal;
when the first in-place level signal is smaller than the second in-place level signal, sending a selection signal for opening a data channel between the first controller and the terminal equipment to the selector;
when the first in-place level signal is greater than the second in-place level signal, sending a selection signal for opening a data channel between the second controller and the terminal device to the selector;
when the first in-place level signal is equal to the second in-place level signal, judging whether the first in-place level signal and the second in-place level signal are both low level signals;
when the first in-place level signal and the second in-place level signal are both low level signals, judging whether a first operation level signal is smaller than a second operation level signal;
when the first operation level signal is smaller than the second operation level signal, sending a selection signal for opening a data channel between the first controller and the terminal device to the selector;
when the first operation level signal is greater than the second operation level signal, sending a selection signal for opening a data channel between the second controller and the terminal device to the selector;
when the first operation level signal is equal to the second operation level signal, judging whether the first operation level signal and the second operation level signal are both low level signals;
and when the first operation level signal and the second operation level signal are both low level signals, sending a selection signal for opening a data channel between the first controller and the terminal equipment to the selector.
Optionally, the system further comprises a prompt module;
the prompting module is connected with the detecting component, and the detecting component is further used for sending a prompting signal to the prompting module when the first in-place level signal and the second in-place level signal are judged to be high level signals and/or the first operation level signal and the second operation level signal are high level signals; and the prompting module is used for alarming and prompting when receiving the prompting signal.
Optionally, the prompting module is an alarm.
Optionally, the prompt module is a display screen.
Optionally, the selector is a 74-series multiplexer.
The embodiment of the invention also provides a signal control method of the double controllers, and the signal control method based on the double controllers comprises the following steps:
the detection part receives a first level signal sent by the first controller and receives a second level signal sent by the second controller; sending corresponding selection signals to a selector according to the level types corresponding to the first level signal and the second level signal;
and the selector receives the selection signal and opens a corresponding data channel according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment.
According to the technical scheme, the signal control device of the double controller comprises a detection part and a selector; the detecting component is respectively connected with the first controller, the second controller and the selector and used for receiving a first level signal sent by the first controller and receiving a second level signal sent by the second controller. In the hardware circuit logic, the level signal can be divided into a high level type and a low level type, the detection unit can determine the main controller according to the level types corresponding to the first level signal and the second level signal, and at this time, the detection unit can send the selection signal corresponding to the main controller to the selector. The selector is respectively connected with the first controller and the second controller and used for receiving a first control signal transmitted by the first controller and a second control signal transmitted by the second controller; and when the selector receives the selection signal sent by the detection part, the corresponding data channel is opened according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment. In the technical scheme, the detection part determines the control rights of the two controllers according to the level signal, and the determination mode is completely realized by hardware, so that the delay caused by software control or the influence caused by unstable software operation can be effectively reduced. And the selector opens the corresponding data channel according to the selection signal, thereby avoiding the occurrence of the competition hazard situation. And the orderly management between the double controllers is realized through the matching of the detection part and the selector.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a signal control apparatus of a dual controller according to an embodiment of the present invention;
fig. 2 is a flowchart of a signal control method of a dual controller according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Next, a signal control apparatus of a dual controller according to an embodiment of the present invention will be described in detail. Fig. 1 is a schematic structural diagram of a signal control apparatus of a dual controller according to an embodiment of the present invention, where the apparatus includes a detecting component 10 and a selector 11;
the detecting component 10 is respectively connected to the first controller, the second controller and the selector 11, and is configured to receive a first level signal sent by the first controller and receive a second level signal sent by the second controller; and sends a corresponding selection signal to the selector 11 according to the level types corresponding to the first level signal and the second level signal.
For convenience of description, in the embodiment of the present invention, two controllers in a dual control system may be referred to as a first controller and a second controller, respectively.
In hardware circuit logic, level signals can be divided into two types, high and low.
Whether the controller can be used as a main controller or not needs to be ensured to be in an online state firstly, and then needs to be ensured to be capable of normally operating, so that in the embodiment of the invention, the first level signal can comprise a first in-place level signal and a first operation level signal; the second level signal may include a second in-bit level signal and a second run level signal.
In a specific implementation, a corresponding relationship between the level and whether the controller is online may be preset, for example, the controller corresponding to the low level may be set online; the high level corresponds to the controller to be offline, namely when the first in-place level signal is low level, the first controller is in an in-place state; when the first on-bit level signal is at a high level, the first controller is in an off-line state. Correspondingly, the low level can be set to correspond to the normal operation of the controller; the high level corresponds to the controller which can not normally operate, namely when the first operation level signal is the low level, the first controller can normally operate; when the first operation level signal is at a high level, it indicates that the first controller cannot operate normally.
In practical application, the high-level corresponding controller can be on line; the low level corresponds to the controller being offline, which is not limited in the embodiment of the present invention.
The processing manner of the second bit level signal and the second operation level signal may refer to the processing manner of the first bit level signal and the first operation level signal, and is not described herein again.
For convenience of description, a high level may be represented by "1" and a low level may be represented by "0", and in the embodiment of the present invention, the low level is illustrated by an example corresponding to the controller being on-line and the controller being in normal operation.
According to the sequence of the first on-bit level signal and the first operation level signal, when the first controller outputs '00', the first controller is in an on-line state and can normally operate, and the first controller meets the requirement of a master controller, namely the first controller has a basis as the master controller; when the output of the first controller is 01, the first controller is in an online state but cannot normally operate, and the first controller cannot be used as a main controller; when the first controller goes off-line, it indicates that the first controller is not normally plugged into the control system, and the first level signal received by the detecting part 10 is "11". Only when the first level signal is "00", the first controller has a basis as a main controller.
If the detecting unit 10 receives the first level signal and the second level signal both being "00", it indicates that the first controller and the second controller both have a basis as a master controller, and a default controller may be used as the master controller. For example, in practical applications, the first controller may be set in advance as the main controller.
When the detecting part 10 receives the first level signal of "00" and the second level signal of "01" or "11", the first controller is used as the main controller; when the detecting part 10 receives the first level signal of "01" or "11" and the second level signal of "00", the second controller is used as the main controller.
When the detecting unit 10 determines the main controller according to the first level signal and the second level signal, it may send a selection signal corresponding to the main controller to the selector 11.
For example, a high level "1" may be assigned to a first controller, and a low level "0" may be assigned to a second controller; when the first controller is used as a main controller, the detecting unit 10 transmits a high level to the selector 11; when the second controller acts as a master controller, the detecting unit 10 transmits a low level to the selector 11.
The selector 11 is respectively connected with the first controller and the second controller, and is used for receiving a first control signal transmitted by the first controller and a second control signal transmitted by the second controller; and receiving the selection signal sent by the detection unit 10, and opening the corresponding data channel according to the selection signal, so as to transmit the control signal sent by the main controller to the terminal device.
With reference to the foregoing example, when the selection signal received by the selector 11 is at a high level, the data channel between the first controller and the terminal device may be opened, and at this time, the selector 11 outputs the first control signal sent by the first controller to the terminal device; when the selection signal received by the selector 11 is at a low level, the data channel between the second controller and the terminal device may be opened, and at this time, the selector 11 outputs the second control signal sent by the second controller to the terminal device.
The type of the control signal recognized by the terminal device is generally a low-speed signal such as PWM, EN, PWRGD, AC _ OK, etc., and therefore, in the embodiment of the present invention, the selector 11 may adopt a 74-series multiplexer.
In the embodiment of the present invention, the detecting unit 10 may employ a comparator. According to the type of the level signal that needs to be judged by the detection component 10, the number of the comparators can be 2, wherein, the first comparator is used for receiving the first bit level signal and the second bit level signal; the second comparator is configured to receive the first operating level signal and the second operating level signal. Of course, in practical application, the number of the comparators may also be 1, that is, one integrated comparator with multiple signals to be compared simultaneously may be selected.
Taking the example of the low level corresponding controller being on-line, in a specific implementation, the detecting component 10 may determine whether the first in-place level signal is smaller than the second in-place level signal; when the first in-place level signal is smaller than the second in-place level signal, it indicates that the first controller is in an on-line state, and the second controller is off-line, and at this time, the detecting unit 10 may send a selection signal for opening a data channel between the first controller and the terminal device to the selector 11.
When the first in-place level signal is greater than the second in-place level signal, it indicates that the first controller is offline, and the second controller is in an online state, and at this time, the detecting unit 10 may send a selection signal for opening a data channel between the second controller and the terminal device to the selector 11.
When the first on-bit level signal is equal to the second on-bit level signal, judging whether the first on-bit level signal and the second on-bit level signal are both low level signals; when the first bit level signal and the second bit level signal are both low level signals, it can be determined which controller has a basis as a master controller based on the first operation level signal and the second operation level signal.
Taking the example that the low level corresponds to normal operation of the controller, and the first controller is the default main controller, it can be determined whether the first operation level signal is less than the second operation level signal. When the first operation level signal is less than the second operation level signal, indicating that the first controller has a basis as a main controller, the detecting unit 10 may send a selection signal for turning on a data channel between the first controller and the terminal device to the selector 11.
When the first operation level signal is greater than the second operation level signal, indicating that the second controller has a base as a main controller, the detecting unit 10 may send a selection signal for turning on a data channel between the second controller and the terminal device to the selector 11.
When the first operation level signal is equal to the second operation level signal, judging whether the first operation level signal and the second operation level signal are both low level signals; and when the first operation level signal and the second operation level signal are both low level signals, sending a selection signal for opening a data channel between the first controller and the terminal equipment to the selector.
According to the technical scheme, the signal control device of the double controller comprises a detection part and a selector; the detecting component is respectively connected with the first controller, the second controller and the selector and used for receiving a first level signal sent by the first controller and receiving a second level signal sent by the second controller. In the hardware circuit logic, the level signal can be divided into a high level type and a low level type, the detection unit can determine the main controller according to the level types corresponding to the first level signal and the second level signal, and at this time, the detection unit can send the selection signal corresponding to the main controller to the selector. The selector is respectively connected with the first controller and the second controller and used for receiving a first control signal transmitted by the first controller and a second control signal transmitted by the second controller; and when the selector receives the selection signal sent by the detection part, the corresponding data channel is opened according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment. In the technical scheme, the detection part determines the control rights of the two controllers according to the level signal, and the determination mode is completely realized by hardware, so that the delay caused by software control or the influence caused by unstable software operation can be effectively reduced. And the selector opens the corresponding data channel according to the selection signal, thereby avoiding the occurrence of the competition hazard situation. And the orderly management between the double controllers is realized through the matching of the detection part and the selector.
In consideration of the fact that in practical application, two controllers may be disconnected or failed at the same time, the two controllers cannot effectively control the terminal device, and in order to remind a manager to check and repair the controllers in time, a prompt module can be arranged on a signal control device of the double controllers.
The prompting module is connected with the detecting component 10, and the detecting component 10 is further configured to send a prompting signal to the prompting module when it is determined that the first in-place level signal and the second in-place level signal are both high level signals and/or the first operation level signal and the second operation level signal are both high level signals; and the prompting module is used for alarming and prompting when receiving the prompting signal.
When the first in-place level signal and the second in-place level signal are both high level signals, the first controller and the second controller are both in an offline state; when the first operation level signal and the second operation level signal are both high level signals, it indicates that both the first controller and the second controller cannot work normally. Under the two conditions, the first controller and the second controller can not control the terminal equipment, and at the moment, the starting prompt module needs to give an alarm for prompting.
In practical application, the prompting module can be an alarm or a display screen or a combination of the two.
Through setting up the suggestion module, can indicate to the condition that two controllers all can't normally work to managers can in time handle, in order to reduce the influence that the controller dropped off or the trouble led to the fact the system operation.
Fig. 2 is a flowchart of a signal control method of a dual controller according to an embodiment of the present invention, where the signal control method includes:
s201: the detection component receives a first level signal sent by the first controller and receives a second level signal sent by the second controller.
The first level signal is used to indicate whether the first controller is online and can work normally, taking the example that the low level corresponds to the online and normal work of the controller, when the first level signal is low level, it indicates that the first controller has a base as a main controller.
The second level signal is used to indicate whether the second controller is online and can work normally, taking the example that the low level corresponds to the online and normal work of the controller, when the second level signal is low level, it indicates that the first controller has a base as the main controller.
Considering that in practical applications, there may be two controllers having the foundation as the main controller at the same time, in the embodiment of the present invention, a default main controller may be set, for example, the first controller may be used as the default controller, and when the first controller and the second controller both have the foundation as the main controller, the first controller is used as the main controller.
S202: the detection component sends a corresponding selection signal to the selector according to the level types corresponding to the first level signal and the second level signal.
In a specific application, the selection signal may be in the form of a high level and a low level, and the high level may be set to correspond to the first controller and the low level may be set to correspond to the second controller.
When the first controller is determined to be the main controller, the detection part outputs a high level to the selector; the detecting unit outputs a low level to the selector when the second controller is determined as the main controller.
S203: the selector receives the selection signal and opens the corresponding data channel according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment.
When the selector receives the high level, the data channel between the first controller and the terminal device can be opened, and the selector outputs a first control signal transmitted by the first controller to the terminal device; when the selector receives the low level, the data channel between the second controller and the terminal device can be opened, and the selector outputs the first control signal transmitted by the second controller to the terminal device.
The description of the features in the embodiment corresponding to fig. 2 may refer to the related description of the embodiment corresponding to fig. 1, and is not repeated here.
The signal control device and method for dual controllers according to the embodiments of the present invention are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The method disclosed by the embodiment corresponds to the device disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the device part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Claims (8)
1. The signal control device of a double controller is characterized by comprising a detection part and a selector;
the detection component is respectively connected with the first controller, the second controller and the selector and is used for receiving a first level signal sent by the first controller and receiving a second level signal sent by the second controller; sending a corresponding selection signal to the selector according to the level types corresponding to the first level signal and the second level signal;
the selector is respectively connected with the first controller and the second controller and is used for receiving a first control signal transmitted by the first controller and a second control signal transmitted by the second controller; receiving a selection signal sent by the detection part, and opening a corresponding data channel according to the selection signal so as to transmit a control signal sent by the main controller to the terminal equipment;
the first level signal comprises a first bit level signal and a first running level signal; the second level signal comprises a second bit level signal and a second running level signal;
the detecting component is specifically configured to determine whether the first in-place level signal is smaller than the second in-place level signal;
when the first in-place level signal is smaller than the second in-place level signal, sending a selection signal for opening a data channel between the first controller and the terminal equipment to the selector;
when the first in-place level signal is greater than the second in-place level signal, sending a selection signal for opening a data channel between the second controller and the terminal device to the selector;
when the first in-place level signal is equal to the second in-place level signal, judging whether the first in-place level signal and the second in-place level signal are both low level signals;
when the first in-place level signal and the second in-place level signal are both low level signals, judging whether a first operation level signal is smaller than a second operation level signal;
when the first operation level signal is smaller than the second operation level signal, sending a selection signal for opening a data channel between the first controller and the terminal device to the selector;
when the first operation level signal is greater than the second operation level signal, sending a selection signal for opening a data channel between the second controller and the terminal device to the selector;
when the first operation level signal is equal to the second operation level signal, judging whether the first operation level signal and the second operation level signal are both low level signals;
and when the first operation level signal and the second operation level signal are both low level signals, sending a selection signal for opening a data channel between the first controller and the terminal equipment to the selector.
2. The apparatus of claim 1, wherein the detection component is a comparator.
3. The apparatus of claim 2, wherein the number of comparators is 2;
the first comparator is used for receiving a first bit level signal and a second bit level signal; the second comparator is configured to receive the first operating level signal and the second operating level signal.
4. The apparatus of claim 1, further comprising a prompt module;
the prompting module is connected with the detecting component, and the detecting component is further used for sending a prompting signal to the prompting module when the first in-place level signal and the second in-place level signal are judged to be high level signals and/or the first operation level signal and the second operation level signal are high level signals; and the prompting module is used for alarming and prompting when receiving the prompting signal.
5. The device of claim 4, wherein the prompting module is an alarm.
6. The device of claim 4, wherein the prompting module is a display screen.
7. The apparatus of any one of claims 1-6, wherein the selector is a 74-series multiplexer.
8. A signal control method of a dual controller, based on the signal control apparatus of the dual controller according to any one of claims 1 to 7, the method comprising:
the detection part receives a first level signal sent by the first controller and receives a second level signal sent by the second controller; sending corresponding selection signals to a selector according to the level types corresponding to the first level signal and the second level signal;
and the selector receives the selection signal and opens a corresponding data channel according to the selection signal so as to transmit the control signal sent by the main controller to the terminal equipment.
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