Smoke exhaust skylight interface circuit

Abstract

The utility model provides a smoke exhaust skylight interface circuit. The smoke exhaust skylight interface circuit comprises an electronic board, an optical coupling relay and a window opening controller. The electronic board receives an external signal and generates a control instruction according to the received external signal. And the input end of the optical coupling relay is connected with the output end of the electronic board. The input ends of the optical coupling relays are connected in parallel, and the optical coupling relays isolate control instructions on the electronic board and convert the control instructions into control signals. The window opening controller is connected with the output end of the optical coupling relay, and the window opening controller receives and responds to the control signal converted by the optical coupling relay so as to open or close the smoke exhaust skylight. According to the smoke exhaust skylight interface circuit provided by the invention, the stability and the reliability of the smoke exhaust skylight interface circuit are realized by connecting the optical coupling relay and transforming the control circuit on the electronic board, and the possibility of fault occurrence is reduced.

Description

Technical Field

[0001] The utility model relates to the field of smoke exhaust skylight control, and particularly relates to a smoke exhaust skylight interface circuit. Background Art

[0002] With the acceleration of the urbanization process, the subway, as an important public transportation tool, its safe operation is of crucial importance. In the subway base, the fire fighting work is particularly critical, and the smoke exhaust skylight, as an important facility during a fire, its normal opening and closing directly relate to the reduction of the amount of smoke, which is of great significance for ensuring the safety of passengers' lives and the integrity of subway facilities. However, there are some problems in the existing smoke exhaust skylight technology, which affect its normal use during a fire. The following are the problems existing in the existing technology:

[0003] 1. Problems with the circuit board of the window opener controller: Due to reasons such as excessive service life, damage of components during installation, and reverse connection of positive and negative, the controller frequently fails and cannot work properly.

[0004] 2. Power supply parallel connection problem: Each starting power supply affects each other. Once a certain controller fails (shorts), it will affect the output power supply of other controllers, and thus affect the normal opening of the smoke exhaust skylight.

[0005] 3. Problems with the electronic board: The cost of the electronic board is relatively high, and it is easy to be damaged and malfunction. In addition, the newly purchased circuit board cannot be directly adapted to the existing facilities and equipment, and the circuit board that needs to be re - adapted requires a longer production cycle.

[0006] In view of the above problems, it is necessary to improve the existing smoke exhaust skylight technology to improve its reliability, stability and adaptability, and ensure that smoke can be discharged quickly and effectively during a fire, providing a strong guarantee for the safe operation of the subway. The present invention aims to solve the above problems. Content of the Utility Model

[0007] In order to solve the above problems, the utility model proposes a smoke exhaust skylight interface circuit. By connecting a photocoupler relay and transforming the control circuit on the electronic board, the stability and reliability of the smoke exhaust skylight interface circuit are realized, and the possibility of failure is reduced.

[0008] The utility model proposes a smoke exhaust skylight interface circuit, which includes:

[0009] An electronic board that receives external signals, and the electronic board generates control instructions according to the received external signals;

[0010] An opto-coupled relay, the input end of the opto-coupled relay is connected to the output end of the electronic board, the input ends of the opto-coupled relays are connected in parallel, and the opto-coupled relay isolates and converts the control instruction on the electronic board into a control signal;

[0011] A window opening controller, which is connected to the output end of the opto-coupled relay, and the window opening controller receives and responds to the control signal converted by the opto-coupled relay to open or close the smoke exhaust skylight.

[0012] In one embodiment, the smoke exhaust skylight interface circuit includes a plurality of opto-coupled relays and a plurality of window opening controllers. The input ends of each opto-coupled relay are connected in parallel and then connected to the output end of the electronic board, and the output end of each opto-coupled relay is respectively connected to the corresponding window opening controller to be controlled.

[0013] In one embodiment, the external signals include:

[0014] The input signal of the automatic fire alarm system;

[0015] Or, the opening or closing of the opening button;

[0016] Or, the opening or closing of the closing button.

[0017] In one embodiment, a control circuit is provided on the electronic board. The control circuit generates a control instruction, and the control circuit includes a window opening circuit and a window closing circuit;

[0018] The window opening circuit includes:

[0019] A first auxiliary relay KA1. The first auxiliary relay KA1 includes a first auxiliary relay coil and a first auxiliary relay normally open contact. The first auxiliary relay coil is connected to the automatic fire alarm system. After the first auxiliary relay coil receives the input signal of the automatic fire alarm system, it is attracted and the corresponding first auxiliary relay normally open contact is closed;

[0020] An opening button, which is disconnected or closed under an external force, and the opening button is connected in parallel with the first auxiliary relay;

[0021] A first contactor KM1, which is respectively connected to the first auxiliary relay KA1 and the opening button. The first contactor KM1 responds to the opening or closing of the first auxiliary relay KA1 and the opening button, and the first contactor KM1 is connected to the input end of the opto-coupled relay;

[0022] The window closing circuit includes:

[0023] A closing button, which is disconnected or closed under an external force;

[0024] The second contactor KM2 is connected to the close button. The second contactor KM2 responds to the closure of the close button and is connected to the input end of the opto-coupled relay.

[0025] In one embodiment, the first contactor KM1 includes a first contactor coil, a first normally open contact of the contactor, and a first normally closed contact of the contactor. The second contactor KM2 includes a second contactor coil, a second normally open contact of the contactor, and a second normally closed contact of the contactor.

[0026] The first normally open contact of the contactor is connected in parallel with the first auxiliary relay KA1 and the open button respectively. The first end of the second normally closed contact of the contactor is connected to the open button, and the first end of the first contactor coil is connected to the second end of the second normally closed contact of the contactor.

[0027] The second normally open contact of the contactor is connected in parallel with the close button. The first end of the first normally closed contact of the contactor is connected to the close button, and the first end of the second contactor coil is connected to the second end of the first normally closed contact of the contactor.

[0028] Wherein, when the first normally open contact of the first auxiliary relay is closed or the open button is closed, the first contactor coil is energized, the first normally open contact of the contactor is closed, the window-opening circuit is connected, and at the same time, the first normally closed contact of the contactor is opened, and the window-closing circuit is disconnected.

[0029] When the close button is closed, the second contactor coil is energized, the second normally open contact of the contactor is closed, the window-closing circuit is connected, and at the same time, the second normally closed contact of the contactor is opened, and the window-opening circuit is disconnected.

[0030] In one embodiment, the window-opening circuit further includes:

[0031] A first normally closed switch SQ1, the first end of the first normally closed switch SQ1 is connected to the second end of the first contactor coil.

[0032] An open indicator light, both ends of the open indicator light are connected to the first end of the first contactor coil and the second end of the first normally closed switch SQ1 respectively.

[0033] In one embodiment, the window-closing circuit further includes:

[0034] A second normally closed switch SQ2, the first end of the second normally closed switch SQ2 is connected to the second end of the second contactor coil.

[0035] A close indicator light, both ends of the close indicator light are connected to the first end of the second contactor coil and the second end of the second normally closed switch SQ2 respectively.

[0036] In one embodiment, the input ends of the window-opening circuit and the window-closing circuit are both connected to the power supply module, and the output ends of the window-opening circuit and the window-closing circuit are both connected to the opto-coupled relay.

[0037] The interface circuit of the smoke exhaust skylight of the present utility model has the following beneficial effects:

[0038] 1. The access of the opto-coupled relay solves the problem that the start power supplies affect each other due to power supply parallel connection. By using the opto-coupled relay, it is ensured that the signal transmission between each controller is unidirectional. Therefore, the failure (short circuit) of one controller will not affect the output power supplies of other controllers.

[0039] 2. Remove the control part of the original electronic board and connect new contactors, power modules, relays and opto-coupled relays. This solves problems such as component damage caused by long service life or during installation, and reverse connection of the positive and negative of the controller. The new circuit design enhances the stability and reliability of the system through components such as opto-coupled relays, reducing the possibility of failures.

[0040] 3. Although the electronic board itself is relatively expensive, the new design makes it easier to maintain and replace in case of failure, without the need to replace the entire control box. In addition, although the newly purchased circuit board cannot be directly adapted, by connecting appropriate contactors, relays and other components, it can be adapted to the existing facilities and equipment, reducing the need for re-transforming and adapting the circuit board. Description of the Drawings

[0041] Figure 1 It is a schematic circuit diagram of the control circuit on the electronic board in the interface circuit of the smoke exhaust skylight of an embodiment of the present utility model. Detailed Embodiment

[0042] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0043] The utility model provides an interface circuit for a smoke exhaust skylight, which includes: an electronic board, an opto-coupled relay, and a window opening controller. The electronic board receives external signals and generates control instructions according to the received external signals. Among them, the external signals include: input signals from the automatic fire alarm system, or the disconnection or closure of the opening button, or the disconnection or closure of the closing button. The input end of the opto-coupled relay is connected to the output end of the electronic board, and the input ends of the opto-coupled relays are in parallel. The opto-coupled relay isolates and converts the control instructions on the electronic board into control signals. The window opening controller is connected to the output end of the opto-coupled relay, and the window opening controller receives and responds to the control signals converted by the opto-coupled relay to open or close the smoke exhaust skylight. In practical applications, the electronic board, the opto-coupled relay, and the window opening controller are all arranged in a control box. The input ends of the opto-coupled relays are connected in parallel to receive the command signals from the electronic board. When the electronic board issues an instruction, the input end of the opto-coupled relay receives the signal, and the signal is converted into an optical signal through the internal photoelectric effect for transmission. At the output end, the optical signal is converted back into an electrical signal and connected to their respective window opening controllers. In this way, the opto-coupled relay isolates the input signal and changes the bidirectional and multi-directional transmission into unidirectional transmission, ensuring that the controllers do not affect each other. In addition, the window opening controller is also one of the core components in the interface circuit of the smoke exhaust skylight, and it is responsible for controlling the opening and closing of the skylight. In this design, the window opening controller executes corresponding operations by receiving instructions from the electronic board. When receiving an opening instruction, the window opening controller drives the motor to open the skylight; when receiving a closing instruction, it drives the motor to close the skylight.

[0044] Furthermore, the interface circuit for the smoke exhaust skylight includes multiple opto-coupled relays and multiple window opening controllers. The input ends of each opto-coupled relay are connected in parallel and then connected to the output end of the electronic board, and the output end of each opto-coupled relay is respectively connected to the corresponding window opening controller for control. Each window opening controller correspondingly controls the opening or closing of a smoke exhaust skylight. Connecting the input ends of multiple opto-coupled relays in parallel means connecting their positive and negative poles together. In this way, the current at the input end can be shared among each opto-coupled relay, thereby achieving the control ability for a larger current. By paralleling multiple opto-coupled relays, the power and stability of the control circuit can be improved, ensuring the reliability and safety of the circuit.

[0045] Furthermore, a control circuit is arranged on the electronic board, and the control circuit generates control instructions. In this embodiment, the control circuit includes a window opening circuit and a window closing circuit.

[0046] Among them, the window opening circuit includes: a first auxiliary relay KA1, an opening button, and a first contactor KM1. As Figure 1As shown, the first auxiliary relay KA1 includes a first auxiliary relay coil and a first auxiliary relay normally open contact. The first auxiliary relay coil is connected to the fire automatic alarm system. After receiving the input signal (FAS signal) from the fire automatic alarm system, the first auxiliary relay coil is energized and the corresponding first auxiliary relay normally open contact closes. The start button is opened or closed under the action of an external force, and the start button is connected in parallel with the first auxiliary relay. The first contactor KM1 is respectively connected to the first auxiliary relay KA1 and the start button. The first contactor KM1 responds to the opening or closing of the first auxiliary relay KA1 and the start button, and the first contactor KM1 is connected to the input terminal of the opto-coupler relay.

[0047] The window closing circuit includes: a close button and a second contactor KM2. As Figure 1 shown, the close button is opened or closed under the action of an external force. The second contactor KM2 is connected to the close button. The second contactor KM2 responds to the closing of the close button, and the second contactor KM2 is connected to the input terminal of the opto-coupler relay.

[0048] Specifically, the first contactor KM1 includes a first contactor coil, a first contactor normally open contact and a first contactor normally closed contact. The second contactor KM2 includes a second contactor coil, a second contactor normally open contact and a second contactor normally closed contact. The first contactor normally open contact is connected in parallel with the first auxiliary relay KA1 and the start button. The first end of the second contactor normally closed contact is connected to the start button, and the first end of the first contactor coil is connected to the second end of the second contactor normally closed contact. The second contactor normally open contact is connected in parallel with the close button. The first end of the first contactor normally closed contact is connected to the close button, and the first end of the second contactor coil is connected to the second end of the first contactor normally closed contact. The input terminal of the opto-coupler relay is connected to the first contactor KM1 and the second contactor KM2 to ensure the electrical isolation and the safety of signal transmission.

[0049] The working principle of the circuit is as follows: When the first auxiliary relay normally open contact closes or the start button closes, the first contactor coil is energized, the first contactor normally open contact closes, the window opening circuit is connected, and at the same time the first contactor normally closed contact opens, and the window closing circuit is disconnected. When the close button closes, the second contactor coil is energized, the second contactor normally open contact closes, the window closing circuit is connected, and at the same time the second contactor normally closed contact opens, and the window opening circuit is disconnected. The normally open contact is used for the self-locking of the AC contactor itself, and the normally closed contact is used for the interlocking between contactors.

[0050] Furthermore, the window opening circuit further includes: a first normally closed switch SQ1 and a start indicator light, see Figure 1。The first end of the first normally closed switch SQ1 is connected to the second end of the first contactor coil. The two ends of the opening indicator light are respectively connected to the first end of the first contactor coil and the second end of the first normally closed switch SQ1. When the first contactor coil is energized, the first normally closed switch SQ1 is disconnected. That is, when the window-opening circuit is connected, the opening indicator light is on; otherwise, it is off.

[0051] Further, the window-closing circuit further includes: a second normally closed switch SQ2 and a closing indicator light. See Figure 1 。The first end of the second normally closed switch SQ2 is connected to the second end of the second contactor coil. The two ends of the closing indicator light are respectively connected to the first end of the second contactor coil and the second end of the second normally closed switch SQ2. When the second contactor coil is energized, the second normally closed switch SQ2 is disconnected. That is, when the window-closing circuit is connected, the closing indicator light is on; otherwise, it is off.

[0052] Further, the input ends of the window-opening circuit and the window-closing circuit are both connected to the power supply module, and the output ends of the window-opening circuit and the window-closing circuit are both connected to the opto-coupled relay. The power supply module is preferably a 24V power supply module.

[0053] Currently, the electrical part of the smoke exhaust skylight has adopted the above transformation method to transform and replace the smoke exhaust skylight with faults and unable to be opened normally, and realized its original function under the condition of controlling costs.

[0054] The smoke exhaust skylight interface circuit of the present utility model has the following beneficial effects:

[0055] 1. The access of the opto-coupled relay solves the problem that the starting power supplies affect each other due to power supply parallel connection. By using the opto-coupled relay, it is ensured that the signal transmission between each controller is unidirectional. Therefore, the failure (short circuit) of one controller will not affect the output power of other controllers.

[0056] 2. Remove the control part of the original electronic board and connect new contactors, power supply modules, relays and opto-coupled relays. Solve the problems such as component damage and reverse connection of the positive and negative of the controller caused by long service life or installation process. The new circuit design enhances the stability and reliability of the system through components such as opto-coupled relays, and reduces the possibility of failures.

[0057] 3. Although the electronic board itself is expensive, the new design makes it easier to maintain and replace in case of failure, without the need to replace the entire control box. In addition, although the newly purchased circuit board cannot be directly adapted, by connecting appropriate contactors, relays and other components, it can be adapted to the existing facilities and equipment, reducing the need to re-transform and adapt the circuit board.

[0058] It should be noted that, unless otherwise clearly stipulated and defined, the similar words such as "arranged", "connected", and "coupled" used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can also be the communication inside two components. Those skilled in the art can understand its specific meaning in this application according to the specific situation. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0059] The above-described embodiments are only further descriptions of the present utility model and do not impose other forms of limitations on the present utility model. The present utility model can also have various other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding modifications and changes according to the present utility model, but these corresponding modifications and changes should all fall within the protection scope of the present utility model.

Claims

1. A smoke exhaust skylight interface circuit, characterized in that: The smoke exhaust skylight interface circuit comprises: An electronic board receives an external signal, and generates a control instruction according to the received external signal; An optical coupling relay, wherein the input end of the optical coupling relay is connected to the output end of the electronic board, and the optical coupling relay isolates the control instructions on the electronic board and converts them into control signals; The window opening controller is connected to the output end of the optical coupling relay, and the window opening controller receives and responds to the control signal converted by the optical coupling relay to open or close the smoke exhaust skylight.

2. The smoke exhaust skylight interface circuit according to claim 1, characterized in that: The smoke exhaust skylight interface circuit includes multiple optical coupling relays and multiple window opening controllers. The input end of each optical coupling relay is connected in parallel to the output end of the electronic board, and the output end of each optical coupling relay is respectively connected to the corresponding controlled window opening controller.

3. The smoke exhaust skylight interface circuit according to claim 1, characterized in that: The external signal includes: Input signal of automatic fire alarm system; or, opening or closing of the start button; Or, the opening or closing of the off button.

4. The smoke exhaust skylight interface circuit according to claim 1, characterized in that: The electronic board is provided with a control circuit, the control circuit generates a control instruction, and the control circuit includes a window opening circuit and a window closing circuit; The window opening circuit comprises: The first auxiliary relay KA1 includes a first auxiliary relay coil and a first auxiliary relay normally open point. The first auxiliary relay coil is connected to the automatic fire alarm system. The first auxiliary relay coil is attracted after receiving an input signal from the automatic fire alarm system, and the corresponding first auxiliary relay normally open point is closed. An opening button, opened or closed under the action of an external force, the opening button being connected in parallel with the first auxiliary relay; The first contactor KM1 is connected to the first auxiliary relay KA1 and the start button respectively. The first contactor KM1 responds to the opening or closing of the first auxiliary relay KA1 and the start button. The first contactor KM1 is connected to the input end of the optical coupling relay; The window closing circuit comprises: Close button, open or close under external force; The second contactor KM2 is connected to the closing button. In response to the closing of the closing button, the second contactor KM2 is connected to the input end of the optical coupling relay.

5. The smoke exhaust skylight interface circuit according to claim 4, characterized in that: The first contactor KM1 includes a first contactor coil, a first contactor normally open point and a first contactor normally closed point, and the second contactor KM2 includes a second contactor coil, a second contactor normally open point and a second contactor normally closed point; The normally open point of the first contactor is connected in parallel with the first auxiliary relay KA1 and the start button respectively, the first end of the normally closed point of the second contactor is connected with the start button, and the first end of the first contactor coil is connected with the second end of the normally closed point of the second contactor; The normally open point of the second contactor is connected in parallel with the close button, the first end of the normally closed point of the first contactor is connected to the close button, and the first end of the second contactor coil is connected to the second end of the normally closed point of the first contactor; When the normally open point of the first auxiliary relay is closed or the opening button is closed, the first contactor coil is energized, the normally open point of the first contactor is closed, and the window opening circuit is connected. At the same time, the normally closed point of the first contactor is disconnected, and the window closing circuit is disconnected. When the close button is closed, the second contactor coil is energized, the normally open point of the second contactor is closed, and the window closing circuit is connected. At the same time, the normally closed point of the second contactor is disconnected, and the window opening circuit is disconnected.

6. The smoke exhaust skylight interface circuit according to claim 5, characterized in that: The window opening circuit also includes: A first normally closed switch SQ1, wherein a first end of the first normally closed switch SQ1 is connected to a second end of the first contactor coil; The indicator light is turned on, and two ends of the indicator light are respectively connected to the first end of the first contactor coil and the second end of the first normally closed switch SQ1.

7. The smoke exhaust skylight interface circuit according to claim 5, characterized in that: The window closing circuit also includes: A second normally closed switch SQ2, a first end of the second normally closed switch SQ2 is connected to a second end of the second contactor coil; The indicator light is turned off, and two ends of the indicator light are respectively connected to the first end of the second contactor coil and the second end of the second normally closed switch SQ2.

8. The smoke exhaust skylight interface circuit according to claim 4, characterized in that: The input ends of the window opening circuit and the window closing circuit are both connected to a power supply module, and the output ends of the window opening circuit and the window closing circuit are both connected to an optical coupling relay.

Images