A series circuit selector switch

Abstract

The present invention discloses a series loop selection switch, including a plurality of bypass relays and a plurality of load relays installed on a box body, wherein the bypass relays are connected in series with the output end of the dimmer; the load relays are respectively connected with the corresponding light circuit terminals and are respectively bridged across the two ends of each bypass relay; the bypass relay and the load relays bridged across the two ends together constitute a group of loop selection switches; the box body is also provided with a main control board and a power supply module for sending control signals to the relays to control their opening and closing, and the power supply module provides an operating voltage to the relays and supplies power to the main control board. The present invention designs the loop selection switch as an independent device. When the airport needs the loop selection switch function, it only needs to purchase the loop selection switch separately and install it between the dimmer and the light circuit, which greatly saves the transformation cost of the airport.

Description

Technical Field

[0001] The invention relates to special equipment for airport navigation lights, and more specifically to a series circuit selection switch. Background Art

[0002] The circuit selection switches currently used in the industry generally adopt a simple mechanical control method, using a conversion switch to directly control the closing and disconnection of the vacuum relay. When the vacuum relay is closed, the output end of the dimmer is connected to the light circuit; when the vacuum relay is disconnected, the output end of the dimmer is disconnected from the light circuit. This control method has a major defect. Since it is a mechanical control method, it is impossible to control the working sequence of the vacuum relay. Each time the circuit is switched, multiple sets of conversion switches need to be operated, and the multiple sets of conversion switches must be operated in a fixed order. The circuit conversion process needs to be completed in the shortest possible time, which places high demands on the operator, with short operation time and fixed operation sequence. Once an error occurs during the operation, the circuit cannot be switched in time, and the lights cannot be turned on quickly, which will bring great hidden dangers to the safe landing of the aircraft.

[0003] There is another commonly used control method for the circuit selector switch, which is the direct control method of the dimmer. The dimmer directly controls the closing and disconnection of the relay according to its own needs. The advantage of this control method is that the operator only needs to operate the dimmer with one button, and the conversion time and conversion sequence are controlled by the dimmer. The disadvantage is that each manufacturer's product designs the selector switch and dimmer as an integral device, which cannot be used as an independent component, so it can only adapt to its own dimmer and is not universal. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a series loop selection switch, which uses a control circuit board to centrally control the action of each group of relays, and is equipped with a multi-line IO mode remote control interface. The loop selection switch can be centrally controlled by a monitoring system, solving the problem of complex operation of traditional mechanical control methods. The switch can also query the working status of the loop selection switch in real time. At the same time, the loop selection switch is designed as an independent device with flexible installation methods, and can be adapted to dimmer devices from different manufacturers.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a series circuit selection switch, including a box body, on which a plurality of bypass relays and a plurality of load relays are installed, and the plurality of bypass relays are connected in series and connected to the output end of the dimmer; the plurality of load relays are respectively connected to the corresponding lighting circuit terminals and are respectively bridged across the two ends of each bypass relay; the bypass relay and the load relay bridged across the two ends together constitute a group of circuit selection switches.

[0006] The box is also provided with a main control board and a power supply module. The main control board is provided with a serial port for downloading configurations. The main control board sends control signals to the bypass relay and the load relay to control their opening and closing. The power supply module provides an operating voltage to the bypass relay and the load relay, and supplies power to the main control board.

[0007] In the above-mentioned series loop selection switch, in a preferred manner, the box is also provided with a multi-line IO interface for connecting to a monitoring system, and the multi-line IO interface is arranged on a wiring terminal. The action of the loop selection switch can be controlled by the monitoring system.

[0008] In the above series loop selection switch, in a preferred embodiment, the box body is also provided with a current sensing switch, and the main control board collects the state signal of the loop selection switch through the current sensing switch and sends it to the monitoring system.

[0009] In the above series circuit selection switch, in a preferred embodiment, the box also includes conversion switches corresponding to the plurality of groups of circuit selection switches respectively and used to control the corresponding circuit selection switches.

[0010] The above-mentioned series circuit selection switch, in a preferred manner, the conversion switch is a three-position selection switch, namely "off", "local" and "remote control"; when the conversion switch is rotated to the "local" or "off" position, the main control board generates a timing control signal to control the load relay and the bypass relay in the corresponding circuit selection switch to perform a closure or disconnection action; when the conversion switch is rotated to the "remote control" position, the monitoring system controls the action sequence and the interval time of the load relay and the bypass relay through the multi-wire IO interface according to the requirements of the control timing, and the monitoring system queries the working status of each group of circuit selection switches in real time through the main control board.

[0011] In the above series circuit selection switch, in a preferred embodiment, a high-voltage wiring board is provided on the box body, and the dimmer output terminal and the lighting circuit wiring terminal are both arranged on the high-voltage wiring board.

[0012] In the above-mentioned series circuit selection switch, in a preferred embodiment, four of the bypass relay and four of the load relay are provided to form four groups of the circuit selection switch.

[0013] In the above series circuit selection switch, in a preferred embodiment, a door touch switch is installed on the door of the box body. When the door is in an open state, the door touch switch is activated to disconnect the input power of the selection switch.

[0014] In the above series circuit selection switch, in a preferred embodiment, a grounding copper bus is provided at the bottom of the box.

[0015] The advantage of the present invention is that the present invention designs a series loop selection switch based on the current status of the industry. The device uses a current sensing switch to detect the current of the lighting loop in real time, and accurately indicates the working status of the lighting loop. The core of the invention is to use the main control board to centrally control the action of each group of relays, and the working sequence of the relays can be downloaded and configured through the serial port provided by the main control board. The loop selection switch is also configured with a multi-line IO remote control interface, which can centrally control the loop selection switch through the monitoring system, and the working status of the loop selection switch can be queried in real time. The operational complexity of the mechanical control method is solved. The present invention designs the loop selection switch as an independent device with flexible installation methods, which can be adapted to dimmer devices from different manufacturers. When the airport needs the loop selection switch function, it is not necessary to replace the dimmer equipment as a whole. It only needs to purchase the loop selection switch separately and install it between the dimmer and the lighting loop, which greatly saves the airport's transformation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a circuit schematic diagram of the loop selection switch of the present invention;

[0018] Figure 3 is a schematic diagram of a conversion switch in the present invention;

[0019] Figure 4 It is a schematic diagram of the high voltage terminal block and the terminal posts in the present invention;

[0020] Figure 5 It is a wiring diagram of the power supply and monitoring system of the loop selection switch of the present invention.

[0021] In the figure, 1. box, 2. power module, 3. terminal block, 4. current sensing switch, 5. wire duct, 6. transfer switch, 7. main control board, 8. door contact switch, 9. bypass relay, 10. load relay, 11. high-voltage terminal board, 12. terminal block, 13. grounding busbar. DETAILED DESCRIPTION

[0022] like Figure 1 As shown, the present invention is a series circuit selection switch, including a box 1, on which are mounted a plurality of bypass relays 9 and a plurality of load relays 10, the plurality of bypass relays 9 are connected in series and connected to the output end of the dimmer; the plurality of load relays 10 are connected to the corresponding light circuit terminals respectively, and are respectively connected across the two ends of each bypass relay 9; the bypass relay 9 and the load relays 10 connected across the two ends thereof together constitute a group of circuit selection switches. Figure 1In the embodiment, four bypass relays 9 and four load relays 10 are provided to form four groups of circuit selection switches. A high voltage wiring board 11 is provided on the box 1, and the output terminal of the dimmer and the wiring terminal of the light circuit are both provided on the high voltage wiring board 11.

[0023] The box body 1 is also provided with a main control board 7 and a power module 2. The main control board 7 is provided with a serial port for downloading configurations. The main control board 7 sends control signals to the bypass relay 9 and the load relay 10 to control their opening and closing; the power module 2 provides an operating voltage to the bypass relay 9 and the load relay 10, and supplies power to the main control board 7.

[0024] like Figure 1 and Figure 5 As shown, the box 1 is also provided with a multi-line IO interface for connecting to the monitoring system, and the multi-line IO interface is set on the wiring terminal 3. The action of the loop selection switch can be controlled by the monitoring system. The box 1 is also provided with a current sensing switch 4. The main control board 7 collects the state signal of the loop selection switch through the current sensing switch 4 and sends it to the monitoring system.

[0025] The box 1 also includes a conversion switch 6 corresponding to the multiple groups of loop selection switches, which is used to control the corresponding loop selection switches. The conversion switch 6 is a three-position selection switch, which is "off", "local", and "remote control" respectively; when the conversion switch 6 is turned to the "local" or "off" position, the main control board 7 generates a timing control signal to control the load relay 10 and the bypass relay 9 in the corresponding loop selection switch to perform a pull-in or disconnection action; when the conversion switch 6 is turned to the "remote control" position, the monitoring system controls the action sequence and the interval time of the load relay 10 and the bypass relay 9 through the multi-line IO interface according to the requirements of the control timing, and the monitoring system queries the working status of each group of loop selection switches in real time through the main control board 7.

[0026] In one embodiment of the present invention, a door-touch switch 8 is installed on the door of the cabinet 1. When the door is in an open state, the door-touch switch 8 is actuated to disconnect the input power of the selection switch.

[0027] In one embodiment of the present invention, a grounding copper bus 13 is disposed at the bottom of the box 1 .

[0028] The series circuit selector switch of the present invention adopts an independent box design structure. The upper part of the box 1 is installed with a power module 2, a terminal block 3, a conversion switch 6, and a main control board 7 from left to right. The upper part of the box 1 is also installed with a wire trough 5 for storing connecting wires. Four current sensing switches 4, four load relays 10, and four bypass relays 9 are installed in the middle of the box 1. A high-voltage wiring board 11 and a grounding copper bus 13 are installed at the lower part of the box 1. A door touch switch 8 is installed on the box door. When the box door is in an open state, the door touch switch 8 is activated to disconnect the input power of the selector switch to protect the safety of the operator.

[0029] like Figure 1-Figure 5 As shown, the function of the power module 2 (AC220V-DC24V) is to provide the voltage for the eight-way relay to operate and to supply power to the main control board 7. The terminal 3 is the connection terminal between the switch 6 and the monitoring system. The main control board 7 is connected to the four-way current sensing switch 4, the four-way load relay 10, and the four-way bypass relay 9. The main control board controls the operation of the eight-way relay and collects the status signals of the four-way current sensing switch. The relay is connected to the output end of the light circuit cable and the dimmer through the high-voltage wiring board 11, that is, the terminal 12 set on the high-voltage wiring board 11.

[0030] like Figure 2 As shown in the circuit schematic diagram of the circuit selection switch of the present invention, the circuit selection switch circuit system of the present invention is mainly composed of four groups of high-voltage vacuum relays, each group of high-voltage vacuum relays is composed of a bypass relay 9 (KM1, KM3, KM5, KM7) and a load relay 10 (KM2, KM4, KM6, KM8), which bypass or convert a lighting circuit respectively.

[0031] In manual mode, the working process and reset process of the first lighting circuit are as follows: when the conversion switch 6 (K1) controlling the first lighting circuit is turned to the "local" position, the main control board 7 generates a control signal to control the load relay KM2 to be energized, and the lighting circuit and the circuit selection switch are connected. After a delay (the delay time can be arbitrarily configured), the bypass relay KM1 is controlled to be energized to connect the lighting circuit and the dimmer output terminal; when the conversion switch 6 (K1) is turned to the "off" position, the main control board 7 generates a timing control signal to control the bypass relay KM1 to be disconnected, and the lighting circuit is bypassed. After a delay (the delay time can be arbitrarily configured), the load relay KM2 is disconnected, and the connection between the lighting circuit and the circuit selection switch is disconnected.

[0032] In manual mode, the process of switching from the first lighting circuit to the second lighting circuit is as follows: the conversion switch 6 (K1) is turned to the "off" position, the main control board 7 generates a timing control signal, controls the bypass relay KM1 to be disconnected, the first lighting circuit is bypassed, and the dimmer is in a short-circuit operation state. After a delay (the delay time can be arbitrarily configured), the load relay KM2 is disconnected, and the connection between the first lighting circuit and the circuit selection switch is disconnected. The conversion switch 6 (K2) is turned to the "local" position, and the load relay KM4 is controlled to be closed, and the lighting circuit and the circuit selection switch are connected. After a delay (the delay time can be arbitrarily configured), the bypass relay KM3 is controlled to be closed, and the second lighting circuit and the output end of the dimmer are connected. The operation of the dimmer with the second lighting circuit loaded is completed.

[0033] In remote control mode, the conversion switch 6 (K1, K2, K3, K4) is set to the "remote control" position. The monitoring system controls the action sequence and action interval of the bypass relay 9 (KM1, KM3, KM5, KM7) and the load relay 10 (KM2, KM4, KM6, KM8) through the multi-line IO interface according to the requirements of the control timing. At the same time, the working status of each group of relays is queried in real time. The loop selection switch is equipped with a remote control interface and is centrally controlled by the monitoring system, which greatly improves the work efficiency of the operator. A medium-to-large-scale airport is usually equipped with 40-50 loop selection switches. If the manual mode is used for conversion, it takes a long time and cannot meet the requirements of the airport's rapid conversion. Using the monitoring system control, the conversion of all loop selection switches can be completed within a few seconds.

[0034] The installation of the series circuit selection switch of the present invention can be installed near the dimmer due to the independent mode design. The lighting cable of the circuit and the output cable of the dimmer are installed in the circuit selection switch. The shielding layer of the circuit lighting cable is connected to the grounding copper bar of the selection switch. Figure 4 As shown, the output cable of the dimmer is connected to the R1 and R2 terminals, the first light loop cable is connected to E1 and E2, the second light loop cable is connected to E3 and E4, the third light loop cable is connected to E5 and E6, and the fourth light loop cable is connected to E7 and E8.

[0035] For the connection of the multi-wire IO remote control interface, the selection switch provides eight control signals (input), and the common end is provided by the selection switch, which respectively controls the bypass relay 9 (KM1, KM3, KM5, KM7) and the load relay 10 (KM2, KM4, KM6, KM8); four-way mode selection signal (output), the monitoring system provides the common end, and the acquisition loop selection switch is in local mode or remote control mode. When in remote control mode, the eight-way relay can be controlled online; four-way loop working status signal (output), the monitoring system provides the common end, and the acquisition loop selection switch works on which loop.

[0036] The loop selection switch is operated in the local control mode. The transfer switch 6 (K1, K2, K3, K4) is turned from the "off" position to the "local" position to complete the conversion of any switch from the bypass state to the running state; the transfer switch 6 (K1, K2, K3, K4) is turned from the "local" position to the "off" position to complete the conversion of any switch from the running state to the bypass state. The four-way transfer switches are interlocked, and only one switch can be converted at the same time.

[0037] The loop selection switch is operated in remote control mode. The conversion switch 6 (K1, K2, K3, K4) is turned to the "remote control" position. The monitoring system remotely controls the loop selection switch through the multi-line IO interface.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A series circuit selection switch, characterized in that: The invention comprises a box (1), on which a plurality of bypass relays (9) and a plurality of load relays (10) are mounted, wherein the plurality of bypass relays (9) are connected in series and connected to the output end of a dimmer; the plurality of load relays (10) are respectively connected to the corresponding light circuit connection terminals and are respectively bridged across the two ends of each bypass relay (9); the bypass relay (9) and the load relays (10) bridged across the two ends thereof together constitute a group of circuit selection switches; The box body (1) is also provided with a main control board (7) and a power supply module (2); the main control board (7) is provided with a serial port for downloading configurations; the main control board (7) sends control signals to the bypass relay (9) and the load relay (10) to control their opening and closing; the power supply module (2) provides an operating voltage to the bypass relay (9) and the load relay (10), and supplies power to the main control board (7); The box (1) is also provided with a multi-line IO interface for connecting to a monitoring system, the multi-line IO interface being arranged on a wiring terminal (3), and the action of the loop selection switch can be controlled by the monitoring system; The box (1) is also provided with a current sensing switch (4), and the main control board (7) collects the state signal of the loop selection switch through the current sensing switch (4) and sends it to the monitoring system; The box body (1) is provided with a high-voltage wiring board (11), and the dimmer output terminal and the lighting circuit wiring terminal are both arranged on the high-voltage wiring board (11).

2. The series circuit selection switch according to claim 1, characterized in that: The box (1) also includes conversion switches (6) corresponding to the plurality of groups of circuit selection switches and used to control the corresponding circuit selection switches.

3. The series circuit selection switch according to claim 2, characterized in that: The conversion switch (6) is a three-position selection switch, which has three positions: "off", "local" and "remote control". When the conversion switch (6) is turned to the "local" or "off" position, the main control board (7) generates a timing control signal to control the load relay (10) and the bypass relay (9) in the corresponding loop selection switch to perform a closing or opening action. When the conversion switch (6) is turned to the "remote control" position, the monitoring system controls the action sequence and the interval time of the load relay (10) and the bypass relay (9) through the multi-wire IO interface according to the requirements of the control timing, and at the same time, the monitoring system inquires about the working status of each group of loop selection switches in real time through the main control board (7).

4. The series circuit selection switch according to any one of claims 1 to 3, characterized in that: Four of the bypass relays (9) and four of the load relays (10) are provided to form four groups of loop selection switches.

5. The series circuit selection switch according to claim 4, characterized in that: A door-touch switch (8) is installed on the door of the box body (1). When the door is in an open state, the door-touch switch (8) is activated to disconnect the input power of the selection switch.

6. The series circuit selection switch according to claim 5, characterized in that: A grounding copper busbar (13) is arranged at the bottom of the box (1).

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