CN116959926A

CN116959926A - Circuit breaker state acquisition system, gateway, detection and transmission device and method thereof

Info

Publication number: CN116959926A
Application number: CN202210404262.9A
Authority: CN
Inventors: 费维和; 王舜尧; 顾棪
Original assignee: Schneider Electric China Co Ltd
Current assignee: Schneider Electric China Co Ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2023-10-27

Abstract

The present disclosure relates to a circuit breaker state acquisition system, a circuit breaker state acquisition gateway, a circuit breaker state detection and transmission device, and a circuit breaker state detection and transmission method. The circuit breaker state acquisition system includes one or more circuit breaker state detection and transmission devices and a circuit breaker state acquisition gateway in communication with each circuit breaker state detection and transmission device via a single bus using a single bus protocol. The state transmission of the circuit breaker can be realized by utilizing a single bus networking mode, the number of wires is reduced, and flexible networking is realized.

Description

Circuit breaker state acquisition system, gateway, detection and transmission device and method thereof

Technical Field

The present disclosure relates to a circuit breaker state acquisition system, a circuit breaker state acquisition gateway, a circuit breaker state detection and transmission device, and a circuit breaker state detection and transmission method.

Background

The circuit breaker is the most widely used terminal protection electric appliance in the low-voltage terminal power consumption device, and is used for protecting against short circuit, overload, overvoltage and the like of a terminal power consumption circuit. In order to realize the digital management of the low-voltage terminal power distribution network, the running state of each breaker needs to be acquired remotely, so that a power distribution operation and maintenance system can timely acquire the state feedback of each terminal power utilization device, measures can be taken timely to remove faults, and the power utilization safety and the power utilization continuity of the terminal power utilization device are ensured.

Disclosure of Invention

The disclosure relates to a circuit breaker state acquisition system, a circuit breaker state acquisition gateway, a circuit breaker state detection and transmission device and a circuit breaker state detection and transmission method, which can realize the transmission of the circuit breaker state by using a single bus networking mode, reduce the number of wires and realize flexible networking.

According to a first aspect of the present disclosure, there is provided a circuit breaker state acquisition system comprising one or more circuit breaker state detection and transmission devices and a circuit breaker state acquisition gateway in communication with each of the circuit breaker state detection and transmission devices via a single bus using a single bus protocol.

Optionally, each circuit breaker status detection and transmission device includes a status detector and a single bus slave component. The state detector detects an operating state of the circuit breaker, and outputs a signal indicating the operating state to the single bus slave unit based on the operating state. The single bus slave component sends signals to the circuit breaker state acquisition gateway via a single bus using a single bus protocol.

Optionally, the status detector includes a status detection switch and a pull-up member. The state detection switch comprises a power end connected to a power supply, a grounding end and an output end, wherein the output end is connected to a general input/output port of the single-bus slave component, and the state detection switch detects the working state of the circuit breaker and is in a conducting state that the grounding end is connected with the output end or in a disconnection state that the grounding end is disconnected with the output end based on the working state. The pull-up section is connected between the power supply and the general purpose input/output port of the single bus slave section.

Optionally, the state detection switch includes a first state detection switch and a second state detection switch, the general input/output port of the single bus slave unit includes a first input/output port and a second input/output port, and the pull-up unit includes a first pull-up unit and a second pull-up unit. The first state detection switch comprises a first power end connected to a power supply, a first grounding end and a first output end, wherein the first output end is connected to the first input/output port. The second state detection switch comprises a second power end connected to the power supply, a second grounding end and a second output end, wherein the second output end is connected to the second input/output port. The first pull-up section is connected between the power supply and the first input/output port. The second pull-up section is connected between the power supply and the second input/output port.

Optionally, the first state detection switch detects an operation state of the circuit breaker, and is in a conductive state in which the first ground terminal and the first output terminal of the first state detection switch are connected based on the circuit breaker being in a tripped state. The second state detection switch detects the working state of the circuit breaker and is in a conducting state that the second grounding end and the second output end of the second state detection switch are connected based on the fact that the circuit breaker is in a closing state or a separating state.

Optionally, each circuit breaker status detection and transmission device further comprises an indication member connected between ground and the power supply, the indication member indicating a trip status based on a signal of the first input/output port of the single bus slave member.

Optionally, the indication component includes a MOS tube and an indicator light. The MOS tube is connected between the power supply and the indicator lamp and is conducted based on the fact that the circuit breaker is in a tripping state. The pilot lamp is connected between MOS pipe and ground wire.

Optionally, the MOS transistor is further turned on during an initialization of the single bus communication procedure based on an initialization signal output from the first general purpose input/output port of the single bus slave component.

Optionally, each circuit breaker state detection and transmission device further comprises an energy storage component that receives electrical energy from the single bus and provides electrical energy to the single bus slave component.

Alternatively, the power supply is a power output interface of a single bus slave component or a separate power supply.

Optionally, the first state detection switch and/or the second state detection switch are/is one of a hall switch, a micro switch, and a breaker auxiliary switch, respectively. The auxiliary switch of the circuit breaker comprises a single-pole double-throw switch, wherein the fixed end of the single-pole double-throw switch corresponds to the output end of the corresponding state detection switch, and the two movable ends of the single-pole double-throw switch respectively correspond to the power end and the grounding end of the corresponding state detection switch.

Optionally, the hall switch detects an operating state of the circuit breaker based on a handle position of the circuit breaker, and the micro switch and the circuit breaker auxiliary switch detect the operating state of the circuit breaker based on a movement position of a trip link of the circuit breaker.

Optionally, the single bus slave component sending a signal to the circuit breaker state acquisition gateway using a single bus protocol comprises: in response to specification of the identifier ID of the single bus slave component by the circuit breaker state acquisition gateway, a signal is sent to the circuit breaker state acquisition gateway using a single bus protocol.

Optionally, the pull-up member is a resistor.

Optionally, each breaker status detection and transmission device is mounted on the breaker as a separate accessory.

Optionally, the circuit breaker state acquisition gateway includes: a single bus master component that communicates with a single bus slave component of each circuit breaker state detection and transmission device via a single bus using a single bus protocol to receive signals; and a breaker state storage section storing the signal.

Alternatively, the single bus master unit may perform initialization of the single bus communication process by generating a reset pulse and receiving a reply pulse from the single bus slave unit.

Alternatively, the single bus master section detects an identifier ID of the single bus slave section of each breaker state detection and transmission apparatus, and specifies the single bus slave section from which a signal is to be received based on the identifier ID.

According to a second aspect of the present disclosure, there is provided a state detection and transmission method of a circuit breaker, including: detecting the working state of the circuit breaker, wherein the working state comprises a closing state, a separating state and a tripping state; generating a signal indicative of the operational state; and transmitting the signal via the single bus using a single bus protocol in response to receiving the request to transmit the signal.

According to a third aspect of the present disclosure, there is provided a circuit breaker state detection and transmission apparatus comprising a state detector and a single bus slave component, wherein the state detector detects an operating state of a circuit breaker, and outputs a signal indicative of the operating state to the single bus slave component based on the operating state; and the single bus slave component transmits the signal using a single bus protocol.

Optionally, the state detection switch includes a first state detection switch and a second state detection switch, the general input/output port of the single bus slave unit includes a first input/output port and a second input/output port, and the pull-up unit includes a first pull-up unit and a second pull-up unit. The first state detection switch comprises a first power end connected to a power supply, a first grounding end and a first output end, wherein the first output end is connected to the first input/output port. The second state detection switch includes a second power supply terminal connected to the power supply, a second ground terminal, and a second output terminal connected to the second input/output port. The first pull-up section is connected between the power supply and the first input/output port. The second pull-up section is connected between the power supply and the second input/output port.

According to a fourth aspect of the present disclosure, there is provided a circuit breaker state acquisition gateway comprising: a single bus master component that communicates with one or more single bus slave components via a single bus using a single bus protocol to receive signals from the one or more single bus slave components indicative of an operational state of the circuit breaker; and a breaker state storage section storing the signal.

Optionally, the single bus master unit initiates the single bus communication process by generating a reset pulse and receiving reply pulses from one or more single bus slave units.

Optionally, the single bus master component detects an identifier ID of one or more single bus slave components and specifies the single bus slave component from which the signal is to be received based on the identifier ID.

Drawings

Aspects, features, and advantages of the present disclosure will become more apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic diagram of a circuit breaker state acquisition system according to an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a circuit breaker status detection and transmission device and circuit breaker status collection gateway according to an embodiment of the present disclosure.

Fig. 3 is a schematic diagram of a circuit breaker status detection and transmission apparatus according to another embodiment of the present disclosure.

Fig. 4 is a schematic circuit diagram of a circuit breaker status detection and transmission apparatus according to an embodiment of the present disclosure.

Fig. 5 is a schematic circuit diagram of a circuit breaker status detection and transmission apparatus according to an embodiment of the present disclosure.

Fig. 6 is a schematic circuit diagram of a circuit breaker status detection and transmission apparatus according to an embodiment of the present disclosure.

Fig. 7 is a flowchart of a state detection and transmission method of a circuit breaker according to an embodiment of the present disclosure.

Detailed Description

The present disclosure will be described in detail below with reference to exemplary embodiments thereof. However, the present disclosure is not limited to the embodiments described herein, which may be embodied in many different forms. The described embodiments are intended only to provide a thorough and complete understanding of the present disclosure and to fully convey the concept of the present disclosure to those skilled in the art. Features of the various embodiments described may be combined with or substituted for one another, unless expressly excluded or excluded depending on the context.

For each circuit breaker in the power distribution network, the current circuit breaker state acquisition system needs to set a switch state acquisition component to acquire the operating state of the circuit breaker and generate a digital quantity switch signal reflecting the operating state, and the digital quantity switch signal is transmitted to a gateway through a special input/output communication component according to a fieldbus protocol such as Modbus and then transmitted to a management server through the gateway via, for example, an Ethernet, so as to realize digital network management of the circuit breaker state. Because the number of digital input/output channels of the input/output communication component is limited, a plurality of input/output communication components are often required to be installed in one electrical cabinet to transmit digital switching signals to all circuit breakers, so that the cost is increased, the space of the cabinet is occupied, and practical difficulties are brought to the digital design and installation of the electrical cabinet.

The embodiment of the disclosure provides a circuit breaker state acquisition system, a circuit breaker state acquisition gateway, a circuit breaker state detection and transmission device and a circuit breaker state detection and transmission method, which can realize the transmission of the circuit breaker state by using a single bus networking mode, do not need the input/output communication components, reduce the number of wires, reduce the cost and realize flexible networking.

Fig. 1 is a schematic diagram of a circuit breaker state acquisition system 10 according to an embodiment of the present disclosure. The circuit breaker state acquisition system 10 may include a circuit breaker state detection and transmission device 11. The circuit breaker status detection and transmission device 11 may be associated with the circuit breaker 13 to detect and transmit the operating status of the circuit breaker 13. Three circuit breaker state detection and transmission devices 11-1, 11-2, and 11-3 (collectively circuit breaker state detection and transmission devices 11) are schematically shown in fig. 1, and are respectively associated with circuit breakers 13-1, 13-2, and 13-3 (collectively circuit breakers 13), to detect and transmit the operating states thereof. The breaker status detection and transmission devices 11-1, 11-2 and 11-3 may be mounted as independent accessories on the breakers 13-1, 13-2 and 13-3, respectively, for plug and play. It will be appreciated that while fig. 1 shows three breaker state detection and transmission devices, the breaker state acquisition system 10 may include more or fewer breaker state detection and transmission devices 11. In other words, the breaker state acquisition system 10 may include one or more breaker state detection and transmission devices 11.

As shown in fig. 1, the circuit breaker state acquisition system 10 may also include a circuit breaker state acquisition gateway 12. The breaker status acquisition gateway 12 communicates with each breaker status detection and transmission device 11 via a single bus using a single bus protocol. In this way, each of the breaker state detecting and transmitting apparatuses 11 is connected to a single bus composed of one data line and one ground line, and communicates with the breaker state acquisition gateway 12 via the single bus in a unified manner, so that the above-described dedicated input/output communication means are not required. The communication of the breaker state acquisition gateway 12 with the breaker state detection and transmission device 11 may include the breaker state acquisition gateway 12 sending an initialization signal to the breaker state detection and transmission device 11, the breaker state acquisition gateway 12 sending a request to the breaker state detection and transmission device 11 indicating that the breaker state detection and transmission device 11 transmits the operational state of the breaker 13 associated therewith, the breaker state detection and transmission device 11 sending the operational state of the breaker 13 associated therewith to the breaker state acquisition gateway 12, and so forth. The breaker status collection gateway 12 may further transmit the operational status of the breaker it receives to the management server 14 via a network such as ethernet or the internet, thereby enabling management of the breaker status. It will be appreciated that the breaker state acquisition gateway 12 may support not only single bus interfaces and protocols, but also other fieldbus interfaces and protocols, such as Modbus, zigbee, bluetooth, etc.

It will be appreciated that while fig. 1 illustrates one or more circuit breakers 13 and management server 14 as being external to circuit breaker state acquisition system 10, in some embodiments, circuit breaker state acquisition system 10 may also include one or more circuit breakers 13 and/or management servers 14.

According to the breaker state acquisition system, each breaker state detection and transmission device can be conveniently installed on a breaker as an independent accessory, communication is established with a breaker state acquisition gateway through one bus cascade, a special input/output communication component is not required, cost is reduced, and flexible networking is realized.

The circuit breaker state detection and transmission device and the circuit breaker state acquisition gateway in the circuit breaker state acquisition system according to the embodiments of the present disclosure and their corresponding operations are described in detail below. Fig. 2 is a schematic diagram of a circuit breaker status detection and transmission device 21 and a circuit breaker status collection gateway 22 according to an embodiment of the present disclosure. As shown in fig. 2, the circuit breaker status detection and transmission device 21 may include a status detector 211 and a single bus slave component 212. The state detector 211 may detect an operating state of the circuit breaker, for example, an operating state of the circuit breaker 13 associated therewith. Further, the state detector 211 may output a signal indicating the operation state to the single bus slave unit 212 based on the detected operation state. For example, the status detector 211 may detect that the operating status of the circuit breaker is a trip status and then output a signal indicating the trip status to the single bus slave component 212. The single bus slave component 212 may send the signal to the circuit breaker state acquisition gateway, e.g., to the circuit breaker state acquisition gateway 12, via a single bus using a single bus protocol.

In one embodiment, the status detector 211 may include a status detection switch and a pull-up component. The state detection switch may include a power terminal connected to a power source, a ground terminal, and an output terminal. The outputs may be connected to general purpose input/output ports of the single bus slave unit 212. The state detection switch may detect an operation state of the circuit breaker 13 and be in a conductive state in which the ground terminal and the output terminal are connected or in an off state in which the ground terminal and the output terminal are disconnected based on the operation state. The pull-up component may be connected between a power supply and a general purpose input/output port of the single bus slave component 212. The general purpose input/output port may be used as both an input port and an output port. At system installation or system initialization, the general purpose input/output port may be temporarily configured as an output port and an initialization signal may be output to instruct the user to complete the initial system configuration (e.g., by illuminating an indicator light). After system initialization is complete, the general purpose input/output port may be configured as an input port to receive output from the state detector 211.

The status detection switch may refer to one or more status detection switches. In one embodiment, the status detector 211 may include only one status detection switch. A case where the state detector 211 includes only one state detection switch will be described with reference to fig. 2. As shown in fig. 2, the state detector 211 may include a state detection switch 2111 and a pull-up section 2112. The state detection switch 2111 may include a power supply terminal Vcc connected to a power supply Vdd, a ground terminal E, and an output terminal OUT. The output OUT may be connected to a general purpose input/output port GPIO of the single bus slave unit 212. The state detection switch 2111 may detect an operation state of the circuit breaker 13 and be in a conductive state in which the ground terminal E and the output terminal OUT are connected or in an off state in which the ground terminal E and the output terminal OUT are disconnected based on the operation state. The pull-up component 2112 may be connected between the power supply Vdd and the general purpose input/output port GPIO of the single bus slave component 212.

The status detection switch 2111 may be one of a hall switch, a micro switch, a circuit breaker auxiliary switch. In the case where the state detection switch 2111 is a hall switch, detecting the operating state of the circuit breaker 13 may be detecting the operating state of the hall switch based on the handle position of the circuit breaker 13. The handle of the circuit breaker can be in three positions of closing, tripping and opening corresponding to the closing state, tripping state and opening state respectively, and the Hall switch can sense the three positions, so that the working state of the circuit breaker is detected. In the case where the state detection switch 2111 is a micro switch, detecting the operating state of the circuit breaker 13 may be the micro switch detecting the operating state thereof based on the movement position of the trip link of the circuit breaker 13. The tripping connecting rod of the circuit breaker can be positioned at three positions of closing, tripping and opening corresponding to the closing state, the tripping state and the opening state respectively, and under the condition that the state of the circuit breaker changes, the tripping connecting rod correspondingly moves so as to drive the micro switch to move, so that the micro switch can detect the working state of the circuit breaker. The circuit breaker auxiliary switch may include a single pole double throw switch, the stationary end of which may correspond to the output end of the state detection switch 2111 in case the state detection switch 2111 is the circuit breaker auxiliary switch, and the two movable ends of which may correspond to the power end and the ground end of the state detection switch 2111, respectively. The stationary end of the single pole double throw switch can be connected to one of the two moving ends based on the movement position of the trip link of the circuit breaker 13, thereby detecting the operating state of the circuit breaker 13. The circuit breaker auxiliary switch may be, for example, a schrader electrical OF/SD accessory.

After detecting the operating state of the circuit breaker 13, the state detection switch 2111 may be in the on state in which the ground terminal E and the output terminal OUT are connected or in the off state in which the ground terminal E and the output terminal OUT are disconnected, based on the detected operating state, as described above. In the case where the state detection switch 2111 is in the on state in which the ground terminal E and the output terminal OUT are connected, since the output terminal OUT is also connected to the general purpose input/output port GPIO of the single bus slave unit 212, a signal input to the general purpose input/output port GPIO is a low level signal, that is, the state detector 211 outputs a low level signal to the single bus slave unit 212 to indicate the corresponding operation state of the circuit breaker. In the case where the state detection switch 2111 is in the off state in which the ground terminal E and the output terminal OUT are disconnected, since the pull-up section 2112 is connected between the power supply Vdd and the general purpose input/output port GPIO of the single bus slave section 112, a signal input to the general purpose input/output port GPIO is a high level signal by the pull-up action of the pull-up section 2112, that is, the state detector 211 outputs a high level signal to the single bus slave section 212 to indicate the corresponding operating state of the circuit breaker. Accordingly, the operating state of the circuit breaker can be distinguished by whether the signal input to the general purpose input/output port GPIO is a high level signal or a low level signal. As an example, the state detection switch 2111 may detect that the operating state of the circuit breaker 13 is a trip state, and be in a conductive state in which the ground terminal E and the output terminal OUT are connected based on the trip state. In this case, the signal input to the general purpose input/output port GPIO is a low level signal, so that the circuit breaker 13 can be indicated to be in a tripped state by the low level signal. As another example, the state detection switch 2111 may detect that the operating state of the circuit breaker 13 is a closing state, and be in a conductive state in which the ground terminal E and the output terminal OUT are connected based on the closing state. In this case, the signal input to the general purpose input/output port GPIO is a low level signal, so that the circuit breaker 13 can be indicated to be in a closed state by the low level signal. As yet another example, the state detection switch 2111 may detect that the operating state of the circuit breaker 13 is a breaking state, and be in a conductive state in which the ground terminal E and the output terminal OUT are connected based on the breaking state. In this case, the signal input to the general purpose input/output port GPIO is a low level signal, so that the circuit breaker 13 can be indicated to be in the open state by the low level signal.

In one embodiment, pull-up feature 2112 may be a resistor.

As described above, the operating states of the circuit breaker 13 may include a closing state, a breaking state, and a trip state. In the case of a state detector comprising only one state detection switch, only one operating state can be explicitly indicated. In one embodiment, it is desirable to indicate all three operating states of the circuit breaker. In this case, each operation state may be discriminated by providing two state detection switches, that is, in this case, the above state detection switches may refer to two state detection switches. Fig. 3 is a schematic diagram of a circuit breaker state detection and transmission device 31 that can distinguish between three operating states of a circuit breaker according to another embodiment of the present disclosure. As shown in fig. 3, the state detection switches of the state detector 311 of the circuit breaker state detection and transmission device 31 may include a first state detection switch 3111 and a second state detection switch 3113. Correspondingly, the pull-up part of the state detector 311 of the circuit breaker state detection and transmission device 31 may include a first pull-up part 3112 and a second pull-up part 3114, and the general purpose input/output ports of the single bus slave part 312 may include a first input/output port gpio a and a second input/output port gpio b. The first state detection switch 3111 may include a first power supply terminal Vcc1 connected to the power supply Vdd, a first ground terminal E1, and a first output terminal OUT1, the first output terminal OUT1 being connected to a first input/output port gpio a of the single-bus slave unit 312. The second state detection switch 3111 may include a second power supply terminal Vcc2 connected to the power supply Vdd, a second ground terminal E2, and a second output terminal OUT2, the second output terminal OUT2 being connected to the second input/output port GPIOB of the single-bus slave unit 312. The first pull-up section 3112 is connected between the power supply Vdd and the first input/output port gpio a. The second pull-up section 3114 is connected between the power supply Vdd and the second input/output port GPIOB.

The first state detection switch 3111 and the second state detection switch 3113 may be one of a hall switch, a micro switch, and a breaker auxiliary switch, respectively, and may detect the operating state of the breaker 13 as described above. The first state detection switch 3111 may be in an on state in which the first ground terminal E1 and the first output terminal OUT1 are connected or an off state in which the first ground terminal E1 and the first output terminal OUT1 are disconnected based on the detected operation state. In case that the first state detecting switch 3111 is in the on state where the first ground terminal E1 and the first output terminal OUT1 are connected, since the first output terminal OUT1 is also connected to the first input/output port gpio a of the single bus slave unit 312, a signal input to the first input/output port gpio a is a low level signal, i.e., the state detector 311 outputs a low level signal to the first input/output port gpio a of the single bus slave unit 312 to indicate a corresponding operation state of the circuit breaker. With the first state detecting switch 3111 in an off state in which the first ground terminal E1 and the first output terminal OUT1 are disconnected, since the first pull-up section 3112 is connected between the power supply Vdd and the first input/output port gpio a of the single-bus slave section 312, a signal input to the first input/output port gpio a is a high level signal by a pull-up action of the first pull-up section 3112, that is, the state detector 311 outputs a high level signal to the first input/output port gpio a of the single-bus slave section 312 to indicate a corresponding operation state of the circuit breaker. Similarly, the second state detection switch 3113 may be in an on state in which the second ground terminal E2 and the second output terminal OUT2 are connected or an off state in which the second ground terminal E2 and the second output terminal OUT2 are disconnected based on the detected operation state. In case that the second state detecting switch 3113 is in the on state where the second ground terminal E2 and the second output terminal OUT2 are connected, since the second output terminal OUT2 is also connected to the second input/output port GPIOB of the single bus slave unit 312, a signal input to the second input/output port GPIOB is a low level signal, i.e., the state detector 311 outputs a low level signal to the second input/output port GPIOB of the single bus slave unit 312 to indicate a corresponding operation state of the circuit breaker. With the second state detecting switch 3113 in an off state in which the second ground terminal E2 and the second output terminal OUT2 are disconnected, since the second pull-up section 3114 is connected between the power supply Vdd and the second input/output port GPIOB of the single-bus slave section 312, a signal input to the second input/output port GPIOB is a high level signal by a pull-up action of the second pull-up section 3114, i.e., the state detector 311 outputs a high level signal to the second input/output port GPIOB of the single-bus slave section 312 to indicate a corresponding operating state of the circuit breaker.

The operating state of the circuit breaker 13 may be indicated by a combination of signals output from the two state detection switches 3111, 3113 to the first input/output port gpio a and the second input/output port gpio b, respectively, by distinguishing between the tripped state and the non-tripped state by one of the first state detection switch 3111 and the second state detection switch 3113 and by distinguishing between the on state and the non-on state or between the off state and the non-off state by the other of the first state detection switch 3111 and the second state detection switch 3113.

In one embodiment, the first state detection switch 3111 may detect an operation state of the circuit breaker 13, and be in a conductive state in which the first ground terminal E1 and the first output terminal OUT1 are connected based on the circuit breaker 13 being in a tripped state. Further, the second state detection switch 3113 may detect an operation state of the circuit breaker 13, and be in a conductive state in which the second ground E2 and the second output OUT2 are connected based on the circuit breaker 13 being in a closed state. Thus, when the circuit breaker is in a tripped state, the first state detecting switch 3111 is in an on state in which the first ground terminal E1 and the first output terminal OUT1 are connected, the first input/output port GPIOA receives a low level signal, the second state detecting switch 3113 is in an off state in which the second ground terminal E2 and the second output terminal OUT2 are disconnected, and the second input/output port GPIOB receives a high level signal. Thus, a combination of the received signals (i.e., low level signal + high level signal) of the first input/output port gpio a and the second input/output port gpio b may indicate a trip condition of the circuit breaker 13. When the circuit breaker is in a closed state, the first state detecting switch 3111 is in an off state in which the first ground terminal E1 and the first output terminal OUT1 are disconnected, the first input/output port GPIOA receives a high level signal, the second state detecting switch 3113 is in an on state in which the second ground terminal E2 and the second output terminal OUT2 are connected, and the second input/output port GPIOB receives a low level signal. Thus, a combination of the received signals (i.e., high level signal + low level signal) of the first input/output port gpio a and the second input/output port gpio b may indicate a closing state of the circuit breaker 13. When the circuit breaker is in the off state, the first state detecting switch 3111 is in an off state where the first ground terminal E1 and the first output terminal OUT1 are disconnected, the first input/output port GPIOA receives the high level signal, the second state detecting switch 3113 is in an off state where the second ground terminal E2 and the second output terminal OUT2 are disconnected, and the second input/output port GPIOB receives the high level signal. Thus, a combination of the received signals (i.e., high signal + high signal) of the first input/output port gpio a and the second input/output port gpio b may indicate the open state of the circuit breaker 13.

Similarly, in another embodiment, the first state detecting switch 3111 may detect an operation state of the circuit breaker 13 and be in a conductive state in which the first ground terminal E1 and the first output terminal OUT1 are connected based on the circuit breaker 13 being in a tripped state. Further, the second state detection switch 3113 may detect an operation state of the circuit breaker 13, and be in a conductive state in which the second ground terminal E2 and the second output terminal OUT2 are connected based on the circuit breaker 13 being in the open state. Similarly, in still another embodiment, the first state detection switch 3111 may detect an operation state of the circuit breaker 13, and be in a conductive state in which the first ground E1 and the first output OUT1 are connected based on the circuit breaker 13 being in a closed state. Further, the second state detection switch 3113 may detect an operation state of the circuit breaker 13, and be in a conductive state in which the second ground E2 and the second output OUT2 are connected based on the circuit breaker 13 being in a tripped state. Similarly, in still another embodiment, the first state detecting switch 3111 may detect an operation state of the circuit breaker 13 and be in a conductive state in which the first ground terminal E1 and the first output terminal OUT1 are connected based on the circuit breaker 13 being in the open state. Further, the second state detection switch 3113 may detect an operation state of the circuit breaker 13, and be in a conductive state in which the second ground E2 and the second output OUT2 are connected based on the circuit breaker 13 being in a tripped state. The working principle is similar to that described above, and will not be described here again.

The first pull-up member 3112 and the second pull-up member 3114 may be resistors, respectively.

As further shown in fig. 2, in one embodiment, the circuit breaker status detection and transmission device 21 may further include an indicator element 213 connected between ground and the power supply Vdd. The control terminal of the indication unit 213 may be connected to the general purpose input/output port GPIO of the single bus slave unit 212 to indicate based on the signal of the general purpose input/output port GPIO. Although the indication unit 213 is described with reference to fig. 2 as an example, it should be understood that in the case that the general purpose input/output port GPIO includes a plurality of input/output ports, the control terminal of the indication unit 213 may be connected to any one of the input/output ports of the single bus slave unit 212. For example, in case the general purpose input/output port GPIO shown in fig. 3 includes a first input/output port GPIO a and a second input/output port GPIO b, the control terminal of the corresponding indication means 313 may be connected to the first input/output port GPIO a or the second input/output port GPIO b to indicate based on a signal (shown with a dotted line in the figure) of the first input/output port GPIO a or the second input/output port GPIO b.

In one embodiment, the indication member 213 may include a MOS tube and an indication lamp. The control end of the indication member 213 may correspond to the gate of the MOS transistor. The MOS tube can be connected between the power supply Vdd and the indicator lamp, and the indicator lamp can be connected between the MOS tube and the ground wire.

Indication based on the signal from the general purpose input/output port GPIO may include indicating to a user to perform an initial configuration of the system and/or indicating an operating state of the circuit breaker 13 during an initialization of the single bus communication procedure.

As described above, during the initialization of the single bus communication process, the general purpose input/output port GPIO in fig. 2 or the first input/output port GPIO a and/or the second input/output port GPIO b in fig. 3 may be temporarily configured as an output port and output an initialization signal, which may be input to the gate of the MOS transistor to turn on the MOS transistor to light the indication lamp, thereby indicating the user to perform the initial configuration of the system.

Further, after the system initialization is completed, the general purpose input/output port GPIO in fig. 2 may be configured as an input port to receive a signal from the output terminal OUT of the state detection switch 2111, which may indicate the operation state of the circuit breaker 13. Therefore, the operating state of the circuit breaker 13 can be indicated by turning on the MOS transistor based on the signal of the general purpose input/output port GPIO to illuminate the indication lamp. Taking the above-described state detection switch 2111 as an example of detecting the operating state of the circuit breaker 13 and being in a conductive state in which the ground terminal E and the output terminal OUT are connected based on the circuit breaker 13 being in a tripped state, in the tripped state, a signal input to the general purpose input/output port GPIO is a low level signal, and the MOS transistor may be turned on based on the low level signal (i.e., the MOS transistor is turned on based on the circuit breaker 13 being in the tripped state) to light the indication lamp, thereby indicating that the circuit breaker 13 is in the tripped state.

Alternatively, the first input/output port gpio a and the second input/output port gpio b in fig. 3 may be configured as input ports to receive a signal from the first output terminal OUT1 of the first state detection switch 3111 and a signal from the second output terminal OUT2 of the second state detection switch 3113, respectively, which may indicate the operation state of the circuit breaker 13. Taking the example that the first state detection switch 3111 detects the operation state of the circuit breaker 13 and is in the on state in which the first ground terminal E1 and the first output terminal OUT1 are connected based on the circuit breaker 13 being in the tripped state, the signal input to the first input/output port gpio is a low level signal, and the indication lamp may be turned on based on the low level signal to indicate that the circuit breaker 13 is in the tripped state (i.e., the MOS transistor is turned on based on the circuit breaker 13 being in the tripped state). Similarly, taking the example in which the above-described second state detection switch 3113 detects the operating state of the circuit breaker 13 and is in the on state in which the second ground terminal E2 and the second output terminal OUT2 are connected based on the circuit breaker 13 being in the on state, the signal input to the second input/output port GPIOB is a low-level signal, the indication lamp may be turned on based on the low-level signal (i.e., the MOS transistor is turned on based on the circuit breaker 13 being in the on state), thereby indicating that the circuit breaker 13 is in the on state.

Referring again to fig. 2, the circuit breaker status detection and transmission device 21 may also include an energy storage component 214 that receives electrical energy from the single bus and provides electrical energy to the single bus slave component 212. Correspondingly, in fig. 3, the circuit breaker state detection and transmission device 31 may further include an energy storage component 314 that receives electrical energy from the single bus and provides electrical energy to the single bus slave component 312. Each of the energy storage components 214 and 314 may include a capacitor.

In one embodiment, the power supply Vdd may be a separate power supply component, such as a battery, in the circuit breaker state detection and transmission device for providing power to the state detection switch 2111 and the indication component 213 in fig. 2 and providing power to the first state detection switch 3111, the second state detection switch 3113 and the indication component 313 in fig. 3.

In one embodiment, as shown in FIG. 2, the single bus slave component 212 may include a power interface SENSE_VDD that provides power to the outside, which may provide power to the status detection switch 2111 and the indication component 213 in place of the power supply Vdd described above. Correspondingly, in fig. 3, the single bus slave unit 312 may include a power source interface sense_vdd for supplying power to the outside, which may supply power to the first state detection switch 3111, the second state detection switch 3113, and the indication unit 313 instead of the above-described power source VDD.

The single bus slave component 312 may be implemented in hardware, software, or a combination of software and hardware. In the case of hardware, the single bus slave unit 312 may be implemented as, for example, a dedicated logic circuit, which may be, for example, an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).

In one embodiment, as shown in fig. 2, the circuit breaker state acquisition gateway 22 may include a single bus host component 221 and a circuit breaker state storage component 222. The single bus master component 221 may communicate with the single bus slave component 212 of each circuit breaker state detection and transmission device 21 via a single bus using a single bus protocol to receive signals indicative of the operating state of the circuit breaker 13. The circuit breaker state storage component 222 may store the signal. It will be appreciated by those skilled in the art that although not shown in fig. 2, the breaker state acquisition gateway 22 may also include a network communication component such as an ethernet or internet communication component such that the breaker state acquisition gateway 22 may transmit signals stored in the breaker state storage component 222 to the management server 14 shown in fig. 1 via the ethernet or internet to enable management of the breaker state. In addition, the breaker state acquisition gateway 22 may also include power components, interface components that support other types of fieldbus (e.g., modbus, zigbee, etc.) protocols, and the like.

Communication between the single bus master unit 221 and the single bus slave unit 212 follows a single bus protocol. The single bus host component 221 may initiate an initialization process before communication begins. For example, during initialization, a reset pulse is first generated by the single bus master unit 221 by pulling down the single bus, and then each single bus slave unit 212 generates a reply pulse by pulling down the single bus as a response to the reset pulse. Upon receipt of each reply pulse by the single bus master unit 221, it may be determined that there are corresponding slaves on the single bus, and that these slaves recognize as ready, and that the initialization process is complete. Thereafter, the single bus master unit 221 may detect the Identifier (ID) of each single bus slave unit 212 on the single bus, for example, by issuing a search command. Next, the single bus master unit 221 may specify a single bus slave unit 212 from which signals are to be received based on the detected respective Identifiers (IDs). In this way, the single bus master unit 221 can receive a signal indicating the operation state of the circuit breaker 13 from the designated single bus slave unit 212 and further transmit it to the management server 14.

The single bus host unit 221 may include a microprocessor to perform the functions described above. Furthermore, the single bus host component 221 may be implemented as hardware, software, or a combination of software and hardware. In case of being implemented as hardware, the single bus host unit 221 may be implemented as, for example, a dedicated logic circuit, which may be, for example, an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit). The circuit breaker state storage component 222 may be a memory.

The breaker state detection and transmission device according to the embodiment of the disclosure can be conveniently installed on a breaker as an independent accessory, and establishes communication with a breaker state acquisition gateway through a bus cascade, so that a special input/output communication component is not required, the cost is reduced, and flexible networking is realized.

The various components of the circuit breaker state acquisition system of the present disclosure may be implemented by the various specific circuits or elements described above. An exemplary embodiment of the circuit breaker state detection and transmission apparatus is further described below taking as an example that the circuit breaker state detection and transmission apparatus includes two state detection switches (e.g., a first state detection switch 3111 and a second state detection switch 3113 in fig. 3). It will be appreciated that although described with a circuit breaker state detection and transmission device comprising two state detection switches, example embodiments of the circuit breaker state detection and transmission device may also be directed to a case where the circuit breaker state detection and transmission device comprises one state detection switch (as shown in fig. 2), as long as the corresponding second state detection switch, second pull-up member, second input/output port are deleted therefrom.

Fig. 4-6 are schematic circuit diagrams of a circuit breaker status detection and transmission apparatus according to an embodiment of the present disclosure. It should be noted that the specific structures of the respective components in fig. 4 to 6 may be individually applied or replaced by other suitable structures.

As shown in fig. 4, the circuit breaker status detection and transmission device 41 may include a status detector 411, a single bus slave component 412. Further, the circuit breaker status detection and transmission device 41 may also include an indication component 413 and an energy storage component 414.

The state detector 411 may include two state detection switches, namely a first state detection switch 4111 and a second state detection switch 4113. The first state detection switch 4111 and the second state detection switch 4113 may be hall switches as shown in fig. 4. The status detector 411 may further include two pull-up members, a first pull-up member 4112 and a second pull-up member 4114, which may be resistors R1 and R2, respectively, as shown in fig. 4.

The single bus slave unit 412 may comprise two general purpose input/output ports, a first input/output port gpio a and a second input/output port gpio b, which may receive signals from the status detector 411 and send signals to the indication unit 413. The single bus slave unit 412 may also include a single bus input/output port IO for sending and receiving signals on a single bus. Optionally, the single bus slave component 412 may also include a power interface SENSE VDD that provides power to the outside.

The indication member 413 may include a MOS tube and an indication lamp. As shown in fig. 4, the MOS transistor may be a PMOS transistor Q1, and the indicator lamp may be a light emitting diode D1. The energy storage component 414 can be a capacitor Cx.

Fig. 5 and 6 show schematic circuit diagrams OF the circuit breaker state detection and transmission devices 51 and 61, respectively, which are substantially identical to the schematic diagram shown in fig. 4, with the difference that the first state detection switch 5111 and the second state detection switch 5113 in the circuit breaker state detection and transmission device 51 in fig. 5 employ micro switches, and the first state detection switch 6111 and the second state detection switch 6113 in the circuit breaker state detection and transmission device 61 in fig. 6 employ circuit breaker auxiliary switches, which may be, for example, schrader's electric OF/SD auxiliaries.

Although the first and second status detection switches are shown as identical elements in fig. 4-6, it is understood that the first and second status detection switches may be of different types, e.g., the first detection switch 4111 in fig. 4 may also be a micro switch or a circuit breaker auxiliary switch.

Fig. 7 is a flowchart of a method 700 of state detection and transmission of a circuit breaker according to an embodiment of the present disclosure. The method may be performed by a circuit breaker status detection and transmission device (11, 21, 31, 41, 51, 61) according to an embodiment of the present disclosure. Method 700 is described in detail below in conjunction with fig. 2. The method 700 starts at step S710, wherein the operating state of the circuit breaker (13) is detected. As described above, the operating states of the circuit breaker (13) may include a closing state, a breaking state, and a trip state. Step S710 may be performed, for example, by the state detector 211 of fig. 2. In step S720, a signal indicating the operating state of the circuit breaker (13) is generated. Step S720 may be performed, for example, by the state detector 211 of fig. 2. In step S730, the signal is transmitted using a single bus protocol via the single bus in response to receiving the request to transmit the signal. As described above, the request to transmit this signal may be, for example, a designation of the identifier ID of the single bus slave unit 212 from the single bus master unit 221 of fig. 2, and step S730 may be performed by the single bus slave unit 212 of fig. 2.

According to the state detection and transmission method of the circuit breaker, communication can be established between the state detection and transmission method and the circuit breaker state acquisition gateway through one bus, a special input/output communication component is not required, the cost is reduced, and flexible networking is realized.

It should be noted that although the steps are described above in a particular order, this should not be construed as requiring that the steps be performed in the particular order or sequence described.

The block diagrams of the devices, apparatus, systems referred to in this disclosure are exemplary only, and are not intended to require or imply that the connections, arrangements, configurations must be made in the manner shown in the block diagrams. As will be appreciated by one of skill in the art, these circuits, devices, apparatuses, devices, systems may be connected, arranged, configured in any manner so long as the desired purpose is achieved.

The processes and logic flows described in this specification can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).

Certain features that are described in this specification in the context of separate embodiments can also be provided in combination. Conversely, various features that are described in the context of separate embodiments can also be implemented in multiple embodiments separately or in any suitable subcombination.

It will be appreciated by persons skilled in the art that the above-described embodiments are merely examples and that various modifications, combinations, partial combinations and substitutions may be made to the embodiments of the present disclosure according to design requirements and other factors, provided that they fall within the scope of the appended claims or their equivalents, i.e., within the scope of the claims to be protected by the present disclosure.

Claims

1. A circuit breaker state acquisition system comprising one or more circuit breaker state detection and transmission devices and a circuit breaker state acquisition gateway, the circuit breaker state acquisition gateway in communication with each of the circuit breaker state detection and transmission devices via a single bus using a single bus protocol.

2. The circuit breaker status collection system of claim 1 wherein each said circuit breaker status detection and transmission means comprises a status detector and a single bus slave component,

the state detector detects the working state of the circuit breaker and outputs a signal indicating the working state to the single bus slave unit based on the working state; and

The single bus slave component sends the signal to the circuit breaker state acquisition gateway via the single bus using the single bus protocol.

3. The circuit breaker state acquisition system of claim 2 wherein the state detector comprises a state detection switch and a pull-up member,

the state detection switch comprises a power supply end connected to a power supply, a grounding end and an output end, wherein the output end is connected to a general input/output port of the single-bus slave component, and the state detection switch detects the working state of the circuit breaker and is in a conducting state that the grounding end is connected with the output end or in a disconnecting state that the grounding end is disconnected with the output end based on the working state;

the pull-up component is connected between the power supply and a general purpose input/output port of the single bus slave component.

4. The circuit breaker state acquisition system of claim 3 wherein the state detection switch comprises a first state detection switch and a second state detection switch, the universal input/output ports of the single bus slave component comprise a first input/output port and a second input/output port, the pull-up component comprises a first pull-up component and a second pull-up component,

The first state detection switch comprises a first power supply end connected to the power supply, a first grounding end and a first output end, and the first output end is connected to the first input/output port;

the second state detection switch comprises a second power supply end, a second grounding end and a second output end which are connected to the power supply, and the second output end is connected to the second input/output port;

the first pull-up section is connected between the power supply and the first input/output port;

the second pull-up section is connected between the power supply and the second input/output port.

5. The circuit breaker status collection system of claim 4 wherein,

the first state detection switch detects the working state of the circuit breaker and is in a conducting state that a first grounding end and a first output end of the first state detection switch are connected based on the circuit breaker being in a tripping state;

the second state detection switch detects the working state of the circuit breaker and is in a conducting state that a second grounding end and a second output end of the second state detection switch are connected based on the fact that the circuit breaker is in a closing state or a separating state.

6. The circuit breaker status collection system of claim 5 wherein each of said circuit breaker status detection and transmission means further comprises an indication member connected between ground and said power source, said trip condition being indicated based on signals from a first input/output port of said single bus slave member.

7. The circuit breaker state acquisition system of claim 6 wherein the indicator means comprises a MOS tube and an indicator light,

the MOS tube is connected between the power supply and the indicator lamp and is conducted based on the fact that the circuit breaker is in the tripping state;

the indicator lamp is connected between the MOS tube and the ground wire.

8. The circuit breaker state acquisition system of claim 7 wherein the MOS transistor is further turned on during an initialization of a single bus communication process based on an initialization signal output from a first general purpose input/output port of the single bus slave component.

9. The circuit breaker state acquisition system of claim 2, each circuit breaker state detection and transmission device further comprising an energy storage component that receives electrical energy from the single bus and provides electrical energy to the single bus slave component.

10. The circuit breaker state acquisition system of claim 3 wherein the power source is a power output interface of the single bus slave component or a separate power source.

11. The circuit breaker state acquisition system of claim 4 wherein the first state detection switch and/or the second state detection switch are each one of a hall switch, a micro switch, a circuit breaker auxiliary switch,

the auxiliary switch of the circuit breaker comprises a single-pole double-throw switch, wherein the fixed end of the single-pole double-throw switch corresponds to the output end of the corresponding state detection switch, and the two movable ends of the single-pole double-throw switch respectively correspond to the power end and the grounding end of the corresponding state detection switch.

12. The circuit breaker state acquisition system of claim 11 wherein the hall switch detects the operating state of the circuit breaker based on a handle position of the circuit breaker, the micro switch and the circuit breaker auxiliary switch detecting the operating state of the circuit breaker based on a movement position of a trip link of the circuit breaker.

13. The circuit breaker state acquisition system of claim 2 wherein the single bus slave component sending the signal to the circuit breaker state acquisition gateway using a single bus protocol comprises: the signal is sent to the circuit breaker state acquisition gateway using a single bus protocol in response to specification of the identifier ID of the single bus slave component by the circuit breaker state acquisition gateway.

14. The circuit breaker status collection system of claim 3 wherein the pull-up component is a resistor.

15. The circuit breaker status collection system of claim 1 wherein each of said circuit breaker status detection and transmission devices is mounted as a separate accessory to the circuit breaker.

16. The circuit breaker status collection system of claim 2 wherein the circuit breaker status collection gateway comprises:

a single bus master component that communicates with the single bus slave component of each of the circuit breaker status detection and transmission devices using the single bus protocol via the single bus to receive the signals; and

and a circuit breaker state storage unit for storing the signals.

17. The circuit breaker state acquisition system of claim 16 wherein the single bus master component enables initialization of a single bus communication process by generating a reset pulse and receiving a reply pulse from the single bus slave component.

18. The circuit breaker status collection system of claim 16 wherein the single bus master component detects an identifier ID of the single bus slave component of each of the circuit breaker status detection and transmission devices and designates a single bus slave component from which signals are to be received based on the identifier ID.

19. A method of detecting and transmitting the status of a circuit breaker, comprising:

detecting the working state of the circuit breaker, wherein the working state comprises a closing state, a separating state and a tripping state;

generating a signal indicative of the operational state; and

in response to receiving a request to transmit the signal, the signal is transmitted via a single bus using a single bus protocol.

20. A circuit breaker state detection and transmission device comprises a state detector and a single bus slave component, wherein,

the single bus slave component transmits the signal via a single bus using a single bus protocol.

21. The circuit breaker status detection and transmission apparatus of claim 20 wherein said status detector comprises a status detection switch and a pull-up member,

22. The circuit breaker status detection and transmission apparatus of claim 21 wherein the status detection switch comprises a first status detection switch and a second status detection switch, the universal input/output ports of the single bus slave component comprise a first input/output port and a second input/output port, the pull-up component comprises a first pull-up component and a second pull-up component,

the second state detection switch comprises a second power supply end connected to the power supply, a second grounding end and a second output end, and the second output end is connected to the second input/output port;

23. The circuit breaker status detection and transmission apparatus of claim 22 wherein,

24. A circuit breaker state acquisition gateway comprising:

a single bus master component that communicates with one or more single bus slave components via a single bus using a single bus protocol to receive signals from the one or more single bus slave components indicative of an operational state of the circuit breaker; and

and a circuit breaker state storage unit for storing the signals.

25. The circuit breaker state acquisition gateway of claim 24 wherein the single bus master component enables initialization of a single bus communication process by generating a reset pulse and receiving an acknowledgement pulse from the one or more single bus slave components.

26. The circuit breaker status collection gateway of claim 24 wherein the single bus master component detects an identifier ID of the one or more single bus slave components and specifies a single bus slave component from which to receive signals based on the identifier ID.