CN112462643B - Self-cancellation state monitoring system based on power supply control switching - Google Patents
Self-cancellation state monitoring system based on power supply control switching Download PDFInfo
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Abstract
The invention discloses a self-revocation state monitoring system based on power supply control switching, which is suitable for a monitoring system consisting of a main control device and a tested device, wherein the main control device is an initiator of state monitoring, and the tested device is a provider of state information; the main control equipment triggers the tested equipment to acquire state information as required through discrete quantity, and the acquired state information is transmitted through a communication interface between the equipment; when the master control equipment is used for monitoring the state, the adaptive power supply is provided for the tested equipment to ensure that the state of the tested equipment is monitored as required so as to deal with the complex use scene of the airborne equipment; for friendly human-computer interaction and operation safety, self-cancellation operation of on-demand state acquisition is realized by adapting switching of power supply turn-off and turn-on control rights between the main control equipment and the equipment to be tested, and system state restoration is achieved.
Description
Technical Field
The present invention relates to, but not limited to, the field of onboard device technologies, and in particular, to a self-revocation status monitoring system based on power control switching.
Background
The power supply system is an important functional system in an aircraft system and is responsible for supplying alternating current and direct current which meet requirements to all electric equipment of the aircraft. With the development of the aviation industry, the power supply of the aircraft is generally derived from a generator driven by an aircraft engine, an Auxiliary Power Unit (APU) and a ground power supply. Before the aircraft engine is started, the aircraft is powered by a ground power supply or APU. After the engine of the airplane is started, the power supply needs to be switched, and an alternating current power supply generated by a generator driven by the engine is used. An alternating current power supply on the airplane provides a direct current power supply for airborne equipment through a converter, and meanwhile, the airplane storage battery is charged. When the generators and the APUs of the aircraft in the air are all in fault, the storage battery is used as an emergency power supply. Due to the high reliability requirement of the aircraft system, the power supply of the airborne equipment is usually designed with redundancy, and power supplies from different sources are connected to the redundancy power supply of the airborne equipment through a bus bar.
Because the state monitoring of the airplane is the key for guaranteeing the safe and stable operation of the airplane, a large number of analog signals, discrete signals and digital signals are adopted on the airplane to describe the operation, the attitude, the engine operation condition and the automatic driving condition of the airplane. Through the parameters of the airplane state monitoring, the running state of the airplane can be known in real time, and the hidden trouble can be found and relevant processing can be carried out at the first time.
Based on the complex use scenario of the airborne equipment, how to realize the self-cancellation of state acquisition after the state monitoring system performs state monitoring is a technical problem to be solved at present.
Disclosure of Invention
The purpose of the invention is: the embodiment of the invention provides a self-revocation state monitoring system based on power supply control switching, which realizes self-revocation operation of state acquisition by adapting switching of power supply control right between a main control device and a device to be tested, and restores the state of the self-revocation state monitoring system to the state before monitoring.
The technical scheme of the invention is as follows: the embodiment of the invention provides a self-revocation state monitoring system based on power supply control switching, which comprises: the device comprises a main control device and a tested device, wherein the main control device and the tested device carry out information interaction through a communication protocol, a power supply of the main control device is connected to the power supply of the tested device through an adaptive power supply and an adaptive switch which are connected in series, and the on state of the adaptive switch is triggered and controlled through discrete quantity output of the main control device;
the self-revocation state monitoring system is used for triggering the tested equipment to acquire state information through the discrete quantity output of the main control equipment, and the state information acquired by the tested equipment is transmitted to the main control equipment through an inter-equipment communication protocol, so that the main control equipment performs related processing according to the state information received from the tested equipment;
the self-revocation state monitoring system, after performing state monitoring, realizes self-revocation in a manner that: self-undoing of the discrete magnitude output of the master device, and the latch of the device under test performing a self-clearing operation.
Optionally, in the self-revocation status monitoring system based on power control switching as described above, the device under test includes: a collector and a latch; the main control device comprises: the discrete magnitude output circuit is used for outputting discrete magnitude, and the output end of the discrete magnitude output circuit is respectively connected to the adaptive switch, the collector of the tested equipment and the latch;
the collector is used for collecting the discrete quantity output of the main control equipment and transmitting the collected discrete quantity output to the latch for latching.
Optionally, in the self-revocation state monitoring system based on power control switching, both the master control device and the device under test adopt a redundancy power supply system; in the state monitoring process, the main control equipment provides an adaptive power supply for the tested equipment, and the adaptive power supply is used as a redundancy power supply in a redundancy power supply system of the tested equipment;
the adaptive power supply is switched off and switched on under the control of the main control device and the tested device, and both the main control device and the tested device are used for switching off or switching on the adaptive power supply so as to ensure the state monitoring of the tested device; the adaptive power supply is started to supply power to the tested equipment, and the adaptive switch is turned off by both the main control equipment and the tested equipment.
Alternatively, in the self-withdrawn state monitoring system based on power supply control switching as described above,
the main control equipment is used for outputting the discrete quantity by starting a button switch of the discrete quantity output circuit;
the device to be tested is used for latching the set state of the discrete quantity through the latch after detecting that the discrete quantity output state of the main control device is set after the device to be tested normally works; the latched discrete quantity is set, state information acquisition work of the device to be detected can be triggered, and the latched discrete quantity of the main control device is output and used for controlling the switching-off and switching-on of the adaptive power supply.
Optionally, in the self-cancellation status monitoring system based on power control switching as described above, the discrete quantity output circuit includes: the button switch, the delay circuit and the delay switch are connected in series; the self-canceling mode of the discrete quantity output of the master control equipment comprises the following steps:
the method comprises the following steps of automatically canceling after a period of time of discrete quantity output setting; or,
the button switch is pressed to release and then automatically bounces to realize self-cancellation; or,
by arranging the delay circuit and the delay circuit inside the main control equipment, after the state change of the button switch is detected, the delay circuit delays the state of discrete magnitude output until the tested equipment normally works.
Alternatively, in the self-withdrawn state monitoring system based on power supply control switching as described above,
the self-cancellation state monitoring system is also used for detecting the discrete quantity setting state and latching the discrete quantity setting state by the detected equipment before the discrete quantity output setting of the main control equipment is cancelled, and triggering the adaptive power supply to be controlled and started at the detected equipment through the latched discrete quantity setting state, so that the adaptive power supply always supplies power to the detected equipment;
the self-cancellation state monitoring system is further used for outputting cancellation of the setting state through the discrete quantity of the main control device, so that the adaptive power supply is controlled to be disconnected in the main control device.
Alternatively, in the self-withdrawn state monitoring system based on power supply control switching as described above,
the self-cancellation state monitoring system is further used for clearing the latch state of the latch through the tested device when the tested device does not receive the command of the main control device in the preset time or receives the command of finishing state acquisition, so that the adaptive power supply is controlled to be turned off at the end of the tested device, and the adaptive power supply is turned off.
Alternatively, in the self-withdrawn state monitoring system based on power supply control switching as described above,
the self-revocation state monitoring system is specifically used for switching the control right of switching off and on the adaptive power supply between the main control device and the tested device to realize the self-revocation operation of state acquisition, so that the state of the self-revocation state monitoring system is restored to the state before monitoring.
Optionally, in the above self-revocation status monitoring system based on power control switching, each power supply of the master control device and the device to be tested is connected to the input end of the or gate diode after passing through the power filter, and the output of the or gate diode is used as the power supply of the device; the redundant power supplies of the master device and the device under test can be from different sources and connected to the corresponding devices through different bus bars.
The invention has the advantages that:
on one hand, the self-revocation state monitoring system based on power supply control switching ensures that the on-demand state monitoring of the tested equipment is carried out to cope with the complex use scene of the airborne equipment by providing the adaptive power supply for the tested equipment, so that the information acquisition of the state monitoring is more efficient and comprehensive. On the other hand, the self-cancellation operation of on-demand state monitoring is realized by adapting the switching of the power supply control right between the main control equipment and the equipment to be tested, the friendliness of man-machine interaction is improved, and the operation safety is ensured.
Description of the drawings:
the accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic diagram of an architecture of a self-revocation status monitoring system based on power control switching according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power control switching-based self-revocation status monitoring system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Aiming at the complex use scene of the airborne equipment in the background technology, how to realize the self-cancellation of state acquisition after the state monitoring system performs state monitoring is the technical problem to be solved at present. The embodiment of the invention provides a self-revocation state monitoring system based on power supply control switching, which is used for monitoring the state of airborne equipment as required and realizing the self-revocation of the on-demand state monitoring through the switching of the power supply control right of the airborne equipment.
The following specific embodiments of the present invention may be combined, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic structural diagram of a self-revocation status monitoring system based on power control switching according to an embodiment of the present invention. The self-revocation state monitoring system based on power supply control switching provided by the embodiment of the invention comprises: the device comprises a main control device and a tested device; the main control equipment and the tested equipment both adopt a redundancy power supply mode, each power supply is connected to the input end of an OR gate diode after passing through a power filter, and the output of the OR gate diode is used as the power supply of the equipment. The redundant power supplies of the master device and the device under test can be from different sources and connected to the corresponding devices through different bus bars. The main control equipment and the tested equipment perform information interaction through the communication protocol between the equipment, and the communication protocol can be equipment communication protocols such as serial communication, network communication, optical fiber communication and the like. In addition, the power supply of the main control equipment is connected to the power supply of the equipment to be tested through the serially connected adaptive power supply and the adaptive switch, and the on state of the adaptive switch is triggered and controlled through discrete quantity output of the main control equipment.
The main control equipment in the embodiment of the invention triggers the tested equipment to acquire the state information through discrete quantity output. The device to be tested detects the discrete magnitude output value of the main control device, if the discrete magnitude output value is set, state information is acquired, the acquired state information is transmitted to the main control device through a communication protocol between devices, and the main control device receives the state information of the device to be tested and then performs related processing.
The self-revocation state monitoring system provided by the embodiment of the invention realizes self-revocation after state monitoring is executed and needs to execute the following two revocation operations: on one hand, the method comprises the following steps: self-cancellation of discrete magnitude output of the master control device; on the other hand: and the latch of the device under test performs a self-clearing operation.
In practical application, the device under test may include: a collector and a latch; the main control device comprises: the output end of the discrete magnitude output circuit is respectively connected to the adaptive switch, and the collector and the latch of the tested equipment are used for outputting discrete magnitude;
the collector is used for collecting the discrete quantity output of the main control equipment and transmitting the collected discrete quantity output to the latch for latching.
Generally, the use scenes of airborne equipment are complex, the power supply situations of redundant power supplies of the airborne equipment are possibly different in air, ground and maintenance, only partial power supplies of redundant power supplies of some equipment are turned on, all redundant power supplies of some equipment are turned on, and some equipment are completely in a power-off state.
In order to cope with the complex use scene of the airborne equipment and enable the information acquisition of the state monitoring to be more efficient and comprehensive, the self-revocation state monitoring system based on the power control switching can provide a controllable adaptive power supply for the tested equipment through the main control equipment, and the adaptive power supply can be used as a redundancy power supply in the power supply system of the tested equipment.
In the specific application of the embodiment of the invention, the adaptive power supply is controlled by the main control equipment and the tested equipment, and both the main control equipment and the tested equipment can turn off or turn on the adaptive power supply. The main control equipment can open the adaptive power supply to supply power to the tested equipment when the tested equipment is triggered to acquire state information as required through discrete magnitude output. If the rest power supplies of the tested equipment are not started, the tested equipment supplies power through the adaptive power supply; if the tested device is powered by other redundancy power supplies, the started adaptive power supply cannot interrupt the current task state of the tested device because the power supply of the tested device is the redundancy power supply, and the tested device can continue to execute the current task.
According to the self-cancellation state monitoring system based on power supply control switching, after the tested device works normally and the tested device detects that the discrete quantity output state of the main control device is set, the latch is used for latching the set state of the discrete quantity. The latched discrete magnitude set state can trigger the state information acquisition work of the tested equipment; meanwhile, the latched discrete quantity of the main control equipment is output and used for controlling the turn-off and turn-on of the adaptive power supply. In addition, as the adaptive power supply of the main control device is turned off and turned on to be controlled by the main control device and the tested device, the adaptive power supply is turned on only by one party to supply power to the tested device; turn-off requires both sides to be turned off.
In order to realize friendly human-computer interaction and operation safety, the self-revocation state monitoring system based on power supply control switching provided by the embodiment of the invention can realize self-revocation operation of state monitoring on demand. The foregoing embodiments have described that the self-revocation of the self-revocation status monitoring system is implemented by the following two points: self-cancellation of discrete magnitude output of the master control device; the latch of the device under test performs a self-clearing operation.
Optionally, in this embodiment of the present invention, implementation manners of self-revoking of the discrete quantity output of the master control device may include the following: the method comprises the following steps of automatically canceling after a period of time of discrete quantity output setting; or the button switch can be pressed to release and then automatically bounce; or, according to the actual system delay requirement, after the state change of the button switch is detected through a delay circuit configured in the main control device, the delay circuit delays the state of discrete quantity output until the tested device works normally.
In the embodiment of the invention, the discrete magnitude output setting state triggers the main control device to control the adaptive power supply to be turned on, and the adaptive power supply starts to supply power to the tested device. And canceling the setting state of the discrete magnitude output, so that the adaptive power supply is controlled to be disconnected on the main control equipment. However, the switching-off and switching-on control of the adaptive power supply is double-control, the adaptive power supply can be switched off only by double switching-off of the main control device and the tested device, and one of the two devices can switch on the adaptive power supply, so that the adaptive power supply can supply power to the tested device.
According to the self-cancellation state monitoring system based on power supply control switching, before the discrete quantity output setting state of the main control device is cancelled, the fact that the setting state of the discrete quantity output is detected and latched by the tested device is guaranteed, and the adaptive power supply is triggered to be controlled to be started on the tested device through the latched discrete quantity setting state. The adaptive power supply caused by the cancellation of the discrete magnitude output setting state of the main control equipment is controlled to be disconnected in the main control equipment, but the adaptive power supply is already controlled to be started on the tested equipment at the moment, so that the adaptive power supply still supplies power to the tested equipment. When the tested device cannot receive the command of the main control device or receives the command of finishing state acquisition for a long time and the tested device clears the latch state of the latch, the adaptive power supply is controlled and switched off at the end of the tested device; since the adaptation power supply of the master control device end is controlled to be turned off before, the adaptation power supply of the tested device end is controlled to be turned off at the moment, so that the adaptation power supply is turned off.
It should be noted that, after the adaptive power supply is controlled to be turned off at the end of the device to be tested, if only the adaptive power supply supplies power to the redundancy power supply of the device to be tested, the device to be tested is powered off and stops working; and if the redundancy power supply of the tested device has an on power supply, the tested device continues to execute the task.
The working mode of the self-revocation state monitoring system based on power supply control switching provided by the embodiment of the invention is as follows: the main control equipment outputs a set state through the discrete magnitude to enable the adaptive power supply of the main control equipment to supply power to the tested equipment. The setting state of the output of the discrete quantity is latched after the tested device normally works, the latched discrete quantity setting state triggers the tested device to acquire state information, and meanwhile, the adaptive power supply is controlled to be started on the tested device. The switching-off and switching-on of the adaptive power supply are controlled by the main control device and the tested device, and the adaptive power supply is switched on to supply power to the tested device only by switching on the adaptive power supply; turn-off requires both sides to be turned off. After the setting state of the discrete quantity of the main control equipment is automatically cancelled, the adaptive power supply is controlled to be turned off on the main control equipment, and at the moment, the turning-off control of the adaptive power supply is taken over by the tested equipment. When the tested device receives the stop command of the main control device or cannot receive the command for a long time, the adaptive power supply is disconnected, and at the moment, the state of the state monitoring system is recovered to the state before state acquisition.
According to the self-revocation state monitoring system based on power supply control switching, the main control device triggers the tested device to acquire state information as required through discrete quantity output. In order to deal with the complex use scene of the airborne equipment, the main control equipment provides a controllable adaptive power supply to supply power to the tested equipment, and the adaptive power supply is controlled by the main control equipment and the tested equipment. For friendly human-computer interaction and operation safety, the switching of the power supply switching-off and switching-on control right between the main control equipment and the equipment to be tested is adapted, and the self-cancelling operation of state acquisition is realized.
The following describes in detail an implementation of the self-cancellation state monitoring system based on power control switching according to the above embodiments of the present invention, taking an onboard device maintenance monitoring board (MMP) and a state monitoring computer (SMP) as examples.
Fig. 2 is a schematic structural diagram of a self-revocation status monitoring system based on power control switching according to an embodiment of the present invention. The MMP and SMP devices in FIG. 2 are both powered by +28VDC dual redundancy, nominal normal operating voltages are +18VDC to +32VDC, and four power supplies of the two devices are independent of each other. The dual-redundancy power supply performs filtering through a power filter inside the equipment and supplies power to the equipment after passing through an OR gate diode. The MMP equipment completes power supply adaptation of the SMP equipment and isolation of a power supply system of the MMP equipment through an adaptation circuit. MMP is used as a main control device, SMP is used as a tested device, and a communication interface between the two devices is RS 485. An implementation of a specific circuit structure is shown in fig. 2.
The MMP equipment is provided with a button switch K1, and the SMP is triggered by the button switch K1 to acquire the state so as to realize the state monitoring on demand. When the button switch of the MMP is pressed down, the coil is controlled to be conducted to the ground by the electromagnetic relay K3 of the adaptive power supply, the coil passes through current, the contact of the electromagnetic relay is attracted, and the adaptive power supply supplies power to the SMP equipment.
And when the rest two paths of power supplies of the SMP are not powered, the adaptive power supply of the SMP starts to supply power, and the system starts to work. When the SMP detects that the push button switch K1 of MMP is pressed, the set state is latched by the latch, and the latch output controls the power transistor K2 to conduct. At the moment, the electromagnetic relay control coil of the adaptive power supply is provided with loops in the MMP equipment and the SMP equipment, the electromagnetic relay is continuously attracted, and the adaptive power supply continuously supplies power to the tested equipment. The button switch K1 bounces automatically after being loosened, the control coil of the electromagnetic relay is turned off in the loop of the MMP equipment, the loop still exists in the SMP equipment, the electromagnetic relay is still in the attraction state, the adaptive power supply still supplies power to the SMP equipment, and the SMP works normally. And when the SMP software detects that the output state of the latch is that the button switch is pressed, acquiring the state. The acquired data are transmitted to the MMP equipment through RS485, and the MMP equipment receives the SMP state data and then processes and displays the SMP state data. When the SMP receives a stop command of the MMP device through the RS485, or does not receive the MMP command in more than 2 minutes, the value of the latch is cleared, the power triode K2 is in a cut-off state, two loops of an electromagnetic relay coil of the adaptive power supply are both turned off, a contact of the electromagnetic relay K3 is bounced open, the adaptive power supply is disconnected, the SMP device is powered off, and the system state is recovered to the working state before collection.
When the button switch K1 is pressed, if the SMP is powered by the rest two redundancy power supplies to normally work at the moment, the pressed button of the K1 triggers the attraction of the adaptive power supply electromagnetic relay K3, the adaptive power supply participates in the redundancy power supply system of the SMP equipment, the power supply of the SMP depends on the potentials of the 2-path redundancy power supply and the adaptive power supply, and the three-path power supply supplies power to the equipment through an OR gate diode. But the addition of the adaptive power supply does not affect the task execution of the SMP at this time. The pressing of push button switch K1 simultaneously triggers the latch circuit of the SMP to latch the push button switch pressed. The output of the latch triggers the conduction of the power transistor K2. Before the button switch is released and bounced, the control coil of the electromagnetic relay adapted to the power supply has a loop in both the MMP and SMP devices. After the button switch releases the automatic bounce, the coil of the electromagnetic relay of the adaptive power supply only generates a loop in the SMP through K2, and the adaptive power supply still participates in the power supply system of the SMP. The state collection occurs when the SMP software detects that the latch state of the latch output K1 is a push. The collected information is transmitted to MMP through RS485, and is displayed after being processed by MMP. When the SMP receives a MMP stopping command through the RS485, or does not receive the MMP command in more than 2 minutes, the value of the latch is cleared, the power triode K2 is in a cut-off state, the contact of the electromagnetic relay is bounced open, and the adaptive power supply is disconnected. But at this time, the SMP is still powered by the redundancy power supply, and the system continues to operate.
In the specific example, the power supply of the adaptive power supply is realized by pressing the switch button K1 of the master control device, the control right of the power supply of the adaptive power supply is transferred to the device to be tested through the automatic bounce of the button K1 and the conduction of the power triode K2, and the adaptive power supply is automatically disconnected when the device to be tested receives a stop command or does not receive a command for a long time. The system state is restored, and the monitoring self-revocation is realized.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A self-overriding status monitoring system based on power control switching, comprising: the device comprises a main control device and a tested device, wherein the main control device and the tested device carry out information interaction through a communication protocol, a power supply of the main control device is connected to the power supply of the tested device through an adaptive power supply and an adaptive switch which are connected in series, and the on state of the adaptive switch is triggered and controlled through discrete quantity output of the main control device;
the self-revocation state monitoring system is used for triggering the tested equipment to acquire state information through the discrete quantity output of the main control equipment, and the state information acquired by the tested equipment is transmitted to the main control equipment through an inter-equipment communication protocol, so that the main control equipment performs related processing according to the state information received from the tested equipment;
the self-revocation state monitoring system has the following implementation mode that the self-revocation is realized after the state monitoring is executed, and the implementation mode comprises the following steps: self-cancellation of discrete magnitude output of the master control device, and self-clearing operation of a latch of the device under test;
wherein, the equipment under test includes: a collector and a latch; the main control device comprises: the discrete magnitude output circuit is used for outputting discrete magnitude, and the output end of the discrete magnitude output circuit is respectively connected to the adaptive switch, the collector of the tested equipment and the latch;
the collector is used for collecting the discrete quantity output of the main control equipment and transmitting the collected discrete quantity output to the latch for latching;
the main control equipment and the tested equipment both adopt redundancy power supply systems; in the state monitoring process, the main control equipment provides an adaptive power supply for the tested equipment, and the adaptive power supply is used as a redundancy power supply in a redundancy power supply system of the tested equipment;
the switching-off and switching-on of the adaptive power supply are controlled by the main control device and the tested device, and the main control device and the tested device are both used for switching-off or switching-on the adaptive power supply so as to ensure the state monitoring of the tested device; the adaptive power supply is started to supply power to the tested equipment, and the adaptive switch is turned off by both the main control equipment and the tested equipment.
2. The power-controlled-switching-based self-revocation status monitoring system according to claim 1,
the main control equipment is used for outputting the discrete quantity by starting a button switch of the discrete quantity output circuit;
the device to be tested is used for latching the set state of the discrete quantity through the latch after detecting that the discrete quantity output state of the main control device is set after the device to be tested normally works; the latched discrete quantity is set, state information acquisition work of the device to be detected can be triggered, and the latched discrete quantity of the main control device is output and used for controlling the switching-off and switching-on of the adaptive power supply.
3. The power-supply-control-switching-based self-cancellation status monitoring system according to claim 2, wherein the discrete-quantity output circuit includes: the button switch, the delay circuit and the delay switch are connected in series; the self-canceling mode of the discrete quantity output of the master control equipment comprises the following steps:
the method comprises the following steps of automatically canceling after a period of time of discrete quantity output setting; or,
the button switch is pressed to release and then automatically bounces to realize self-cancellation; or,
by arranging the delay circuit and the delay circuit inside the main control equipment, after the state change of the button switch is detected, the delay circuit delays the state of discrete magnitude output until the tested equipment normally works.
4. The power-controlled-switching-based self-revocation status monitoring system according to claim 3,
the self-cancellation state monitoring system is also used for detecting the discrete quantity setting state and latching the discrete quantity setting state by the detected equipment before the discrete quantity output setting of the main control equipment is cancelled, and triggering the adaptive power supply to be controlled and started at the detected equipment through the latched discrete quantity setting state, so that the adaptive power supply always supplies power to the detected equipment;
the self-cancellation state monitoring system is further used for outputting cancellation of the setting state through the discrete quantity of the main control device, so that the adaptive power supply is controlled to be disconnected in the main control device.
5. The power-controlled-switching-based self-revocation status monitoring system according to claim 4,
the self-cancellation state monitoring system is further used for clearing the latch state of the latch through the tested device when the tested device does not receive the command of the main control device in the preset time or receives the command of finishing state acquisition, so that the adaptive power supply is controlled to be turned off at the end of the tested device, and the adaptive power supply is turned off.
6. The power-controlled-switching-based self-revocation status monitoring system according to claim 5,
the self-revocation state monitoring system is specifically used for switching the control right of switching off and on the adaptive power supply between the main control device and the tested device to realize the self-revocation operation of state acquisition, so that the state of the self-revocation state monitoring system is restored to the state before monitoring.
7. The power supply control switching based self-cancellation state monitoring system according to any one of claims 1-6, wherein each power supply of the master control device and the device to be tested is connected to an input end of an OR gate diode after passing through a power supply filter, and an output of the OR gate diode is used as the power supply of the device; the redundant power supplies of the master device and the device under test can be from different sources and connected to the corresponding devices through different bus bars.
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| CN202011226605.4A CN112462643B (en) | 2020-11-05 | 2020-11-05 | Self-cancellation state monitoring system based on power supply control switching |
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