Cabinet state detection apparatus and application method therefor

Abstract

A cabinet state detection apparatus and an application method therefor. The detection apparatus comprises a bus level control circuit (15), a first isolation device (13), a second isolation device (12), a processing level control circuit (16), a signal processing circuit (14) and a data processing circuit (11), wherein an input end of the first isolation device (13) is connected to an output end of the data processing circuit (11), and an output end of the first isolation device (13) is connected to each of an input end of the bus level control circuit (15) and an input end of the second isolation device (12); the input end of the second isolation device (12) is connected to each of the output end of the first isolation device (13) and an output end of the bus level control circuit (15), and an output end of the second isolation device (12) is connected to each of an input end of the signal processing circuit (14) and an input end of the processing level control circuit (16); the input end of the signal processing circuit (14) is connected to each of the output end of the second isolation device (12) and an output end of the processing level control circuit (16), and an output end of the signal processing circuit (14) is connected to an input end of the data processing circuit (11).

Description

Cabinet state detection device and application method thereof

[0001] The present application claims priority to Chinese patent application CN202410874537.4 with a filing date of 2024 / 7 / 2. The present application incorporates the entire text of the aforementioned Chinese patent application. TECHNICAL FIELD

[0002] The present application relates to the field of rod control system control, in particular to a cabinet state detection device and application method thereof. BACKGROUND

[0003] The digital control rod control system includes rod control logic cabinet, rod control mobile cabinet and rod control selection cabinet and other equipment. The rod control system is used to control the control rod of the reactor. The system receives relevant control signals from other subsystems in the power plant control system and operators, and controls the insertion or lifting of the control rod in the reactor core according to these control requirements, thereby realizing the functions of reactor startup, shutdown, power regulation and core axial power regulation.

[0004] The power cabinet of the rod control system is used to convert the three-phase alternating current of the rod power unit into the pulsating direct current required by the coil of the drive mechanism. It receives instructions from the logic cabinet and supplies power to the drive mechanism according to a certain time sequence. In the AP1000 technology third-generation nuclear power unit, the power cabinet is divided into mobile cabinet and selection cabinet according to function, and the mobile cabinet can be reused, that is, one mobile cabinet can carry 5-6 selection cabinets, greatly reducing the number of cabinet equipment. The concept of reuse usually appears in the communication bus, and is realized through the on-off of digital logic circuits, such as tri-state gates. The working voltage of mos(Metal Oxide Semiconductor Field Effect Transistor, metal oxide semiconductor field effect transistor) devices is low, and the anti-interference performance is weak, which is not suitable for the reuse of electrical equipment such as rod control mobile cabinet. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the low safety and anti-interference of the existing technology when the cabinet is reused, and to provide a cabinet state detection device and application method thereof.

[0006] The present application solves the above technical problems by the following technical solutions:

[0007] In a first aspect, a cabinet state detection device is provided. One detection device is deployed in one cabinet, and each cabinet is connected through a bus. The bus is connected to at least three cabinets.

[0008] The detection device includes a bus level control circuit, a first isolation device, a second isolation device, a processing level control circuit, a signal processing circuit and a data processing circuit.

[0009] The input end of the first isolation device is connected with the output end of the data processing circuit, and the output end is connected with the input end of the bus level control circuit and the input end of the second isolation device respectively; the first isolation device is used to transmit the first signal output by the data processing circuit of the same cabinet to the bus, so that the first signal is transmitted to other cabinets by the bus, in response to the conduction of the first isolation device;

[0010] The input end of the second isolation device is connected with the output end of the first isolation device and the output end of the bus level control circuit respectively, and the output end is connected with the input end of the signal processing circuit and the input end of the processing level control circuit respectively; the second isolation device is used to transmit the second signal transmitted by other cabinets to the signal processing circuit, in response to the conduction of the second isolation device;

[0011] The input end of the signal processing circuit is connected with the output end of the second isolation device and the output end of the processing level control circuit respectively, and the output end of the signal processing circuit is connected with the input end of the data processing circuit;

[0012] The data processing circuit is used to determine the cabinet state of the cabinet to which the data processing circuit belongs according to the first signal and the second signal.

[0013] Optionally, in response to the signal output by the data processing circuit being a high level, the second isolation device is conducted;

[0014] In response to the signal output by the data processing circuit being a low level, the first isolation device is conducted.

[0015] Optionally, a filter capacitor is arranged between the first isolation device and the second isolation device.

[0016] Optionally, the signal processing circuit is a comparator, the input end of the comparator is connected with the output end of the second isolation device and the output end of the processing level control circuit respectively, and the output end of the comparator is connected with the input end of the data processing circuit; the comparator is used to receive the second signal of the second isolation device and transmit the second signal to the signal processing circuit.

[0017] Optionally, the data processing circuit is realized by an MCU circuit or an FPGA circuit.

[0018] Optionally, the first isolation device and the second isolation device are photoelectric isolation devices.

[0019] In a second aspect, an application method of a detection device is provided, which is applied to the detection device of the first aspect, and the application method comprises:

[0020] The detection device is installed in at least three cabinets of the stick control system; the cabinets include one mobile cabinet and at least two selection cabinets;

[0021] The mobile cabinet and the selection cabinets are connected to determine the operation state of the cabinets according to the signal output by the data processing circuit.

[0022] Optionally, the connection of the mobile cabinet and the selection cabinets includes:

[0023] The mobile cabinet and the selection cabinets are connected in the form of a daisy chain.

[0024] Optionally, the connection of the mobile cabinet and the selection cabinets to determine the operation state of the cabinets according to the signal output by the data processing circuit includes:

[0025] For any single cabinet, in response to the signal output by the data processing circuit in the single cabinet, it is determined that the single cabinet is in an alarm state or a working state according to the data processing circuit; in response to the signal output by the data processing circuit in the single cabinet, it is determined that the single cabinet is in a standby state.

[0026] Optionally, the connection of the mobile cabinet and the selection cabinets to determine the operation state of the cabinets according to the signal output by the data processing circuit includes:

[0027] For any single cabinet, in response to the signal output by the data processing circuit in the single cabinet and the received signal being high, it is determined that the single cabinet is in an alarm state or a working state according to the data processing circuit; in response to the signal output by the data processing circuit in the single cabinet being low and the received signal being high, it is determined that other cabinets are in an alarm state or a working state.

[0028] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, each preferred example of the present application is obtained.

[0029] The positive progress effect of the present application is that the isolation device is used to improve the isolation voltage between the bus level control circuit and the data processing circuit, so that the anti-interference performance of the detection device is good, the reliability is high, the components of the circuit in the detection device are few, the circuit connection is simple, the reliability is high, and the components used are common, the mature and reliable components are used, and the cost of the detection device is reduced. Through the application of the detection device, the multiplexing function of the mobile cabinet in the stick control system is realized, the stability and reliability are ensured, the functional requirements of the stick control system are realized, and the number of cabinets is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 is a circuit diagram of a detection device according to an example embodiment of the present application;

[0031] Fig. 2 is a flow chart of a method of using a detection device according to an example embodiment of the present application;

[0032] Fig. 3 is a schematic diagram of an application scenario of a detection device according to an example embodiment of the present application. DETAILED DESCRIPTION

[0033] The present application will be further described by way of example with reference to the attached drawings, but the present application is not limited to the described examples.

[0034] Reference herein to "an example" means that a particular feature, structure, or characteristic described in connection with the example can be included in at least one example of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same example, nor are separate or alternative examples mutually exclusive of other examples. One of ordinary skill in the art will readily recognize from the disclosure herein, that the examples described herein can be combined with each other in various ways.

[0035] As used herein, unless the context clearly indicates otherwise, the words "a", "an", "one", and / or "the" are not limited in scope to the singular immediately preceding a word, but are open, also, to usage covering both the singular and the plural, unless the context clearly indicates otherwise. Generally, the terms "comprise" and "comprising" are used herein to indicate the inclusion of a recited step or element in a method or device, but do not preclude the addition of one or more further steps or elements.

[0036] As used herein, the term "comprise", "comprising", "have", "has", "having", or "include" or "including" or any variation thereof, cover a non-exclusive inclusion. As used herein, the terms "comprise", "comprising", "have", "has", "having", or "include" or "including" or any variation thereof, are intended to indicate the presence of the described features, numbers, steps, operations, elements, components, or combinations thereof, but not to preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0037] The prefix words "first", "second", and the like, as used herein, do not necessarily denote any ordinal, chronological, or priority relation, but are merely used to distinguish different features, elements, or steps from one another. The use of the ordinal words "first", "second", and the like, in the description of the embodiments of the present application does not limit the scope of the application to only those embodiments which can be described using these ordinal words. The scope of the application encompasses all embodiments falling within the scope of the claims and equivalents thereof. The use of the ordinal words "first", "second", and the like, in the description of the embodiments of the present application does not limit the scope of the application to only those embodiments which can be described using these ordinal words. The scope of the application encompasses all embodiments falling within the scope of the claims and equivalents thereof. The use of the ordinal words "first", "second", and the like, in the description of the embodiments of the present application does not limit the scope of the application to only those embodiments which can be described using these ordinal words. The scope of the application encompasses all embodiments falling within the scope of the claims and equivalents thereof. The use of the ordinal words "first", "second", and the like, in the description of the embodiments of the present application does not limit the scope of the application to only those embodiments which can be described using these ordinal words. The scope of the application encompasses all embodiments falling within the scope of the claims and equivalents thereof. The use of the ordinal words "first", "second", and the like, in the description of the embodiments of the present application does not limit the scope of the application to only those embodiments which can be described using these ordinal words. The scope of the application encompasses all embodiments falling within the scope of the claims and equivalents thereof.

[0038] Fig. 1 is a structural schematic diagram of a cabinet state detection device according to an example embodiment of the present application. The detection device comprises a bus level control circuit 15, a first isolation device 13, a second isolation device 12, a processing level control circuit 16, a signal processing circuit 14, and a data processing circuit 11. One detection device is arranged on one cabinet, each cabinet is connected through a bus, and at least three cabinets are connected on the bus. The cabinet includes but is not limited to a selection cabinet and a mobile cabinet, and at least one mobile cabinet is included in the cabinets connected on the bus.

[0039] The input end of the first isolation device 13 is connected with the output end of the data processing circuit 11, and the output end is connected with the input end of the bus level control circuit 15 and the input end of the second isolation device 12, respectively. The first isolation device 13 is used to transmit the first signal output by the data processing circuit 11 of the same detection device in the cabinet to which the first isolation device 13 belongs to the bus when the first isolation device 13 is turned on, the bus is on the bus level control circuit 15, and the bus transmits the first signal to other cabinets connected on the same bus, so that other cabinets receive the first signal sent by the cabinet. The first isolation device 13 realizes the isolation and transmission of the signal interface, cooperates with the processing level control circuit 16 to transmit the signal of the bus to the data processing circuit 11, the output of the first isolation device 13 is high, and the bus level control circuit 15 is high; the output of the first isolation device 13 is low, and the bus level control circuit 15 is pulled to low level, and the first isolation device 13 provides the level isolation between the bus level control circuit and the data processing circuit. Through the selection of the device, an isolation voltage of 2000V-5000V can be provided.

[0040] The input end of the second isolation device 12 is connected with the output end of the first isolation device 13 and the output end of the bus level control circuit 15, respectively, and the output end is connected with the input end of the signal processing circuit 14 and the input end of the processing level control circuit 16, respectively. The second isolation device 12 is used to transmit the second signal transmitted by other cabinets to the signal processing circuit when the second isolation device 12 is turned on. The second isolation device realizes the isolation and transmission of the signal interface, when the data processing circuit 11 outputs a high level, the bus level is high, when the data processing circuit 11 outputs a low level, the bus level is low, and the second isolation device 12 provides the level isolation between the data processing circuit 11 and the bus level control circuit 15. Through the selection of the device, an isolation voltage of 2000V-5000V can be provided.

[0041] The input end of the signal processing circuit 14 is connected with the output end of the second isolation device 12 and the output end of the processing level control circuit 16 respectively, and the output end of the signal processing circuit 14 is connected with the input end of the data processing circuit 11. The signal processing circuit 14 is used for receiving the signal transmitted from the bus level control circuit 15 via the second isolation device 12, shaping the signal input by the bus level control circuit 15, and outputting to the data processing circuit 11, so that the signal entering the data processing circuit is more easily recognized, processed and increased in reliability.

[0042] The data processing circuit 11 is used for signal acquisition, processing, operation and judgment, and realizes function control. The data processing circuit 11 determines the cabinet state of the cabinet to which the data processing circuit belongs according to the first signal and the second signal. The working state of the cabinet is determined by one pin of the data processing circuit, and the other pin determines whether the cabinet is in an alarm state or a normal state. The data processing circuit detects the running data of the cabinet, for example, when the temperature is too high, a high level is sent to the first isolation device to prompt that the cabinet has an alarm signal, and other cabinets are on standby. For another example, when the first signal sent by the data processing circuit is a low level and the received second signal is a high level, it is determined that the cabinet itself is in a standby state, and other cabinets connected to the same bus are in a working state or an alarm state.

[0043] The bus level control circuit 15 is connected between the first isolation device 13 and the second isolation device 12. By adjusting a group of resistance values in the bus level control circuit 15, when the first isolation device is turned on, the second isolation device is turned off, and when the second isolation device is turned on, the first isolation device is turned off, the working state of the bus is ensured to be reliable.

[0044] In the figure, Fault Out CRC is the output of a certain fault, Fault In O is the input of a certain fault, the difference between fault-1 and fault-2 represents the fault state transmitted by the bus, and the Busy / Fault bus represents that data transmission is being performed on the bus at this time, so the bus is occupied.

[0045] In this embodiment, the isolation and transmission of the signal interface are realized by the isolation devices. The first isolation device is turned on when the second isolation device is turned off, and the second isolation device is turned on when the first isolation device is turned off. The first signal of the data processing circuit in the cabinet is output to the bus through the first isolation device and the second isolation device, and the second signal transmitted from other cabinets is received by the bus and transmitted to the data processing circuit. The data processing circuit in the cabinet determines whether itself and other cabinets are in a standby state or a working state according to the first signal sent by itself and the received second signal, and knows the state of all cabinets connected to the same bus by the bus, so as to realize the multiplexing of the cabinet.

[0046] In one embodiment, the second isolation device is turned on in response to the signal output by the data processing circuit being high, and the first isolation device is turned on in response to the signal output by the data processing circuit being low.

[0047] When the first signal output by the data processing circuit is high, the cabinet to which the data processing circuit belongs occupies the bus, at this time the bus is high, the first isolation device is not turned on, the second isolation device is turned on, the second signal transmitted by other cabinets and received by the bus is transmitted to the second isolation device, and the second isolation device transmits the second signal to the processing level control circuit. After the processing level control circuit adjusts the level, the second signal is transmitted to the signal processing circuit, and the signal processing circuit adjusts the on-off state of the second signal into a high or low state and outputs it to the data processing circuit, so that the data processing circuit can determine the cabinet state of the cabinet to which the data processing circuit belongs and other cabinets according to the first signal and the second signal.

[0048] When the first signal output by the data processing circuit is low, the cabinet to which the data processing circuit belongs does not occupy the bus, at this time the bus is pulled low to low, the first isolation device is turned on, the second isolation device is not turned on, the second signal obtained by the processing level control circuit is low, and the second signal obtained by the signal processing circuit is also low. The low-level signal is transmitted to the data processing circuit, so that the data processing circuit can determine the cabinet state of the cabinet to which the data processing circuit belongs and other cabinets according to the first signal and the second signal.

[0049] In one embodiment, a filter capacitor is provided between the first isolation device and the second isolation device.

[0050] As shown in FIG. 1, the filter capacitor C1 in the first isolation device and the second isolation device is used for signal filtering to filter out interference signals between different circuit parts, ensure that the signal transmission of the isolation device is not affected by other circuits, ensure that the signals are not interfered with each other when transmitted between the input and output of the isolation device, and the filter capacitor can smooth the power fluctuation and provide stable DC voltage.

[0051] In one embodiment, the first isolation device and the second isolation device are optoelectronic isolation devices.

[0052] The signal isolation is realized through the bridge arm between the first isolation device and the second isolation device. The optoelectronic isolation device can be conveniently integrated into various circuits, including digital circuits and analog circuits, and the optoelectronic isolation device can be compatible with various types of circuits and signals, including analog signals, digital signals and pulse signals, improving the compatibility of the detection device. The isolation voltage provided by the optoelectronic isolation device is high, the anti-interference performance is good, which means high reliability, and the connection is simple, the components are few, and it is more commonly used, reducing the cost of the detection device.

[0053] In one embodiment, the signal processing circuit is a comparator, the input terminals of the comparator are connected with the output terminal of the second isolation device and the output terminal of the processing level control circuit respectively, the output terminal of the comparator is connected with the input terminal of the data processing circuit, and the comparator is used for receiving the second signal of the second isolation device and transmitting the second signal to the signal processing circuit.

[0054] The signal processing circuit is used for shaping the signal input via the second isolation device, the voltage value of the output state of the comparator is determined by setting the threshold level of the comparator, thereby controlling the on and off of the second isolation device, making the signal entering the data processing circuit more recognizable and easier to process, and increasing the reliability of the detection device.

[0055] In one embodiment, the data processing circuit is realized by an MCU (Microcontroller Unit) circuit or an FPGA (Field-Programmable Gate Array) circuit.

[0056] The data processing circuit can use integrated circuits such as MCUs and FPGAs for signal acquisition, processing, operation and judgment, realize functional control, provide extremely high flexibility, and can realize a more powerful, flexible and efficient control system to meet the multiple requirements of performance, power consumption, cost and reliability of modern electronic systems.

[0057] In one embodiment, as shown in FIG. 1, one end of the first resistor R1 is connected with the data processing circuit, and the other end is connected with the first isolation device, which is used for limiting the current size entering the first isolation device by adjusting the value of the first resistor R1, so that the first isolation device is in a safe working state. One end of the second resistor R2 is connected with the second isolation device, and the other end is grounded, which is used for adjusting the level of the signal processing circuit, and the resistance value of the second resistor R2 can be 4.7K. The third resistor R3, the fourth resistor R4 and the fifth resistor R5 are used for adjusting the level on the bus by adjusting the resistance of R3, R4 and R5, so as to control the level on the bus to be within a reliable range, for example, adjusting the bus level to be between 1V and 24V, the resistance value of the third resistor R3 can be 1.5k, the resistance value of the fourth resistor R4 can be 1.2k, and the resistance value of the fifth resistor R5 can be 0. The sixth resistor R6 and the seventh resistor R7 are used for voltage division and adjusting the reference level of the signal processing circuit, the resistance value of the sixth resistor R6 can be 33k, and the resistance value of the seventh resistor R7 can be 5.6k. The eighth resistor R8 is a pull-up resistor, which is used for delivering the high level to the data processing circuit when the output of the signal processing circuit is high, and delivering the low level to the data processing circuit when the output of the signal processing circuit is low, and the resistance value of the eighth resistor R8 can be 2k.

[0058] As shown in FIG. 2, the embodiment of the present application further provides an application method of the detection device, which is applied to the detection device described above, and the application method comprises the following steps:

[0059] S21, installing the detection device into at least three cabinets of the rod control system.

[0060] Among them, the cabinet comprises one mobile cabinet and at least two selection cabinets.

[0061] S22, connecting the mobile cabinet and the selection cabinets to determine the operation state of the cabinet according to the signal output by the data processing circuit.

[0062] Each detection device shown in FIG. 1 is installed into one cabinet respectively, one detection device is installed in each mobile cabinet, and one detection device is installed in each selection cabinet. The mobile cabinet and the at least two selection cabinets are connected, and the detection device in the cabinet is used to realize that one mobile cabinet drives multiple selection cabinets, that is, the mobile cabinet can work with the first selection cabinet at the same time, or the mobile cabinet can work with the second selection cabinet at the same time, and so on.

[0063] When the bus level is low, the data processing circuit of all the cabinets connected by the bus obtains low level, wherein the data processing circuit can be a data acquisition card, when any cabinet sends a high level signal of the state bit or the alarm bit to occupy the bus, the bus transmits the high level to other cabinets connected to the same bus, and all the data processing circuits of the cabinets receive the high level. That is, by using the detection device, it can be known that one cabinet in the cabinet group connected to the same bus is in a certain working state or alarm state, and at the same time, the cabinet can determine the working state of the cabinet. The bus is used to realize the multiplexing of the cabinet, when a certain cabinet is started, other cabinets are in standby state, the data processing circuit occupying the bus is restored to the idle state of low level after the function processing is completed, and the multiplexing of multiple devices is realized by using the detection device, so that the function switching of each device is normal.

[0064] By detecting the level on the bus, when the bus is in a low level state, the cabinet is in a standby state, when any selection cabinet sends a high level signal to occupy the bus, the voltage of the bus reaches a high level, the mobile cabinet drives the selection cabinet to work, the selection cabinet releases the bus after use and sends a low level signal to pull down the bus, and the mobile cabinet and the selection cabinet enter the standby state.

[0065] The application method of the detection device provided by the embodiment of the present application uses simple and mature components to build a detection device for multiplexing multiple devices, realizes the multiplexing of the mobile cabinet in the rod control system, realizes the functional requirements of the rod control system through the application of the detection device, and greatly reduces the number of cabinets.

[0066] In one embodiment, the mobile cabinet and the selection cabinet are connected, including: connecting the mobile cabinet and the selection cabinet in a daisy chain form.

[0067] As shown in FIG. 3, each detection device shown in FIG. 1 is installed into a cabinet respectively, the mobile cabinet and the selection cabinet are connected in a daisy chain form, for example, one mobile cabinet is connected with six selection cabinets, the daisy chain form makes the distance between the cabinets equal, the distance between each line is almost equal, the number of required connection lines is reduced, the connected line is relatively short, the wiring and design are simplified, the connection mode is relatively reliable, and the manufacturing cost is reduced. Moreover, the daisy chain structure is easy to expand, and adding a new cabinet usually only needs to be connected to a certain point in the chain, allowing flexible addition or removal of devices in the chain, facilitating maintenance and upgrading.

[0068] In one embodiment, the mobile cabinet and the selection cabinet are connected to determine the running state of the cabinet according to the signal output by the data processing circuit, including:

[0069] For any single cabinet, in response to the signal output by the data processing circuit in the single cabinet being high, it is determined according to the data processing circuit that the single cabinet is in an alarm state or a working state; in response to the signal output by the data processing circuit in the single cabinet being low, it is determined that the single cabinet is in a standby state.

[0070] When a certain cabinet needs to enter a working state for functional logic, the data processing circuit in the detection device in the cabinet sends a signal at a high level, wherein the data processing circuit can be a data acquisition card, at this time, the bus for the device multiplexing working state and the detection device is at a high level, and the signal received by the data processing circuit in all cabinets is also at a high level. When a certain cabinet does not need to enter a working state for functional logic, the signal sent is at a low level, the occupation of the bus is released, and it is determined that the cabinet is in a standby state.

[0071] In one embodiment, the mobile cabinet and the selection cabinet are connected to determine the running state of the cabinet according to the signal output by the data processing circuit, including:

[0072] For any single cabinet, in response to the signal output by the data processing circuit in the single cabinet and the received signal being at a high level, it is determined according to the data processing circuit that the single cabinet is in an alarm state or a working state; in response to the signal output by the data processing circuit in the single cabinet being at a low level and the received signal being at a high level, it is determined that other cabinets are in an alarm state or a working state.

[0073] When one cabinet needs to enter working state, the data processing circuit in the detection device of the cabinet sends a high level signal, wherein the data processing circuit can be a data acquisition card, the data processing circuit sends the high level signal to the bus, the bus of the equipment multiplexing working state and detection device is high level, the bus transmits the high level signal to other cabinets connected to the same bus, the data processing circuits in all cabinets receive the high level signal, the data processing circuit sending the high level signal judges that the bus is occupied by itself through the comparison between the signal sent by itself and the signal received, when the logic function ends, the signal sent is changed to low level, the occupation of the bus is released, and other cabinets can judge that the bus is occupied by other cabinets through the comparison between the signal sent by itself and the signal received, and then wait for the release of the bus.

[0074] In one embodiment, the bus can be used as an alarm bus, when one cabinet enters alarm, the data processing circuit of the cabinet sends a high level alarm signal, the alarm bus is high level, at this time, the data processing circuits of all cabinets receive the high level signal, the data processing circuit sending the alarm signal judges that the alarm signal is sent by itself through the comparison between the signal sent by itself and the signal received, when the alarm in the cabinet disappears, the alarm signal sent is cancelled, the occupation of the alarm bus is released, and other cabinets start corresponding functions to control the state of the control rod and realize reliable operation of the system when receiving the alarm signal.

[0075] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only examples, and various changes or modifications can be made to these embodiments without departing from the principles and essence of the present application. Therefore, the protection scope of the present application is defined by the appended claims.

Claims

1. A cabinet state detection device characterized by comprising: One detection device is arranged in one cabinet, each cabinet is connected through a bus, and at least three cabinets are connected on the bus; The detection device comprises a bus level control circuit, a first isolation device, a second isolation device, a processing level control circuit, a signal processing circuit and a data processing circuit; An input end of the first isolation device is connected with an output end of the data processing circuit, and output ends thereof are respectively connected with an input end of the bus level control circuit and an input end of the second isolation device; The first isolation device is used for transmitting a first signal output by the data processing circuit of the same cabinet to the bus, so that the first signal is transmitted to other cabinets by the bus, when the first isolation device is turned on; An input end of the second isolation device is respectively connected with an output end of the first isolation device and an output end of the bus level control circuit, and output ends thereof are respectively connected with an input end of the signal processing circuit and an input end of the processing level control circuit; the second isolation device is used for transmitting a second signal transmitted by other cabinets to the signal processing circuit, when the second isolation device is turned on; An input end of the signal processing circuit is respectively connected with an output end of the second isolation device and an output end of the processing level control circuit, and an output end of the signal processing circuit is connected with an input end of the data processing circuit; The data processing circuit is used for determining a cabinet state of the cabinet to which the data processing circuit belongs, according to the first signal and the second signal.

2. The detection device of claim 1, wherein, The second isolation device is turned on in response to the signal output by the data processing circuit being a high level; The first isolation device is turned on in response to the signal output by the data processing circuit being a low level.

3. The detection device according to at least one of claims 1 to 2, characterized in that A filter capacitor is arranged between the first isolation device and the second isolation device.

4. The detection device according to at least one of claims 1 to 3, characterized in that The signal processing circuit is a comparator, an input end of the comparator is respectively connected with an output end of the second isolation device and an output end of the processing level control circuit, and an output end of the comparator is connected with an input end of the data processing circuit; the comparator is used for receiving the second signal of the second isolation device and transmitting the second signal to the signal processing circuit.

5. The detection device according to at least one of claims 1 to 4, characterized in that The data processing circuit is realized through an MCU circuit or an FPGA circuit.

6. The detection device according to at least one of claims 1 to 5, characterized in that The first isolation device and the second isolation device are photoelectric isolation devices.

7. A method of using a detection device, characterized in that The detection device is applied to any one of claims 1-6, and the application method comprises: The detection device is installed in at least three cabinets of a stick control system; the cabinets comprise one mobile cabinet and at least two selection cabinets; The mobile cabinet and the selection cabinets are connected, so as to determine the running state of the cabinets according to the signal output by the data processing circuit.

8. The method of claim 7, wherein the composition is applied to the skin of the user in an amount of about 0.1 to about 10 grams. The mobile cabinet and the selection cabinets are connected, so as to determine the running state of the cabinets according to the signal output by the data processing circuit. The mobile cabinet and the selection cabinets are connected in the form of a daisy chain.

9. The method of use according to at least one of claims 7 to 8, characterized in that, The mobile cabinet and the selection cabinets are connected, so as to determine the running state of the cabinets according to the signal output by the data processing circuit. For any single cabinet, in response to the signal output by the data processing circuit in the single cabinet being high, it is determined according to the data processing circuit that the single cabinet is in an alarm state or a working state; in response to the signal output by the data processing circuit in the single cabinet being low, it is determined that the single cabinet is in a standby state.

10. The method of use according to at least one of claims 7 to 8, characterized in that, The connecting of the moving cabinet and the selected cabinet to determine the running state of the cabinet according to the signal output by the data processing circuit comprises: For any single cabinet, in response to the signal output by the data processing circuit in the single cabinet and the received signal both being high, it is determined according to the data processing circuit that the single cabinet is in an alarm state or a working state; in response to the signal output by the data processing circuit in the single cabinet being low and the received signal being high, it is determined that other cabinets are in an alarm state or a working state.

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