Control device for low-voltage light and acousto-optic alarm

Abstract

The utility model discloses a low-voltage light and acousto-optic alarm signal control device, which comprises a pressure switch, a trigger circuit, a single chip microcomputer circuit, a power supply circuit, a light driving circuit and an acousto-optic alarm signal driving circuit, the pressure switch is electrically connected with the trigger circuit, the output end of the trigger circuit is electrically connected with the input end of the single chip microcomputer circuit, and the output end of the single chip microcomputer circuit is electrically connected with the power supply circuit. The output end of the single-chip microcomputer circuit is electrically connected with the control end of the light driving circuit and the control end of the acousto-optic alarm signal driving circuit, and the power supply circuit is electrically connected with the trigger circuit, the single-chip microcomputer circuit, the light driving circuit and the acousto-optic alarm signal driving circuit. The audible and visual alarm performs safety warning, the intelligence and safety of the electric cabinet are improved, the structure is simple, the cost is low, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, in particular to a sound and light control technology, in particular to a control device for low-voltage lighting and sound and light alarms. Background Art

[0002] Electrical cabinets are becoming increasingly advanced and intelligent, and are widely used in computer rooms and electrical control equipment. Because the control equipment within these cabinets is typically high-voltage or valuable, they place high demands on the environment. Therefore, they are typically sealed to protect the equipment from moisture, impact, and dust. However, when the cabinet is currently open, there are no lights or alarms inside, making it impossible to provide safety alerts or a safe maintenance environment. Utility Model Content

[0003] The technical problem to be solved by the utility model is that when the electric cabinet is opened, there is no light in the electric cabinet and no alarm can be given, so it is impossible to provide a safety reminder and a safe maintenance environment.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: a low-pressure light and sound and light alarm control device, including a pressure switch, a trigger circuit, a single-chip circuit, a power supply circuit, a light drive circuit and a sound and light alarm drive circuit, the pressure switch is electrically connected to the trigger circuit, the output end of the trigger circuit is electrically connected to the input end of the single-chip circuit, the output end of the single-chip circuit is electrically connected to the light drive circuit and the control end of the sound and light alarm drive circuit, the power supply circuit is electrically connected to the trigger circuit, the single-chip circuit, the light drive circuit and the sound and light alarm drive circuit respectively; the pressure switch includes The present invention comprises a first pressure block, a second pressure block, a first hollow guide column and a second hollow guide column; the first pressure block is fixedly connected to one end of the first hollow guide column, the second pressure block is fixedly connected to one end of the second hollow guide column, the other end of the first hollow guide column is sleeved within the other end of the second hollow guide column and can move within a limited position, a reset spring is arranged between the first pressure block and the second hollow guide column, the reset spring is sleeved on the first hollow guide column, the first pressure block is provided with a first contact, the second pressure block is provided with a second contact, and the first contact and the second contact move toward each other and make contact under the action of external force applied to the first pressure block and the second pressure block.

[0005] Furthermore, the other end of the first hollow guide column is provided with a flange edge extending radially outward, and the other end of the second hollow guide column is provided with a clamping portion extending radially inward. The flange edge of the first hollow guide column moves in the second hollow guide column and is limited by the clamping portion to form a limited movement.

[0006] Compared with the existing technology, the present invention has the following advantages: when installed on an electrical cabinet, when the cabinet door is opened, the pressure switch is disconnected, a trigger signal is output, the single-chip microcomputer responds, generates a drive control instruction, the drive circuit drives the light inside the cabinet to illuminate, and the sound and light alarm issues a safety warning, thereby improving the intelligence and safety of the electrical cabinet. The present invention has a simple structure, low cost, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the circuit structure of the control device of the utility model.

[0008] Figure 2 It is a cross-sectional view of the pressure switch of the present utility model.

[0009] Figure 3 This is a circuit diagram of the trigger circuit of the present utility model.

[0010] Figure 4 This is a circuit diagram of the sound and light alarm driving circuit of the utility model.

[0011] Among them, the pressure switch S1, the first pressure block 1, the second pressure block 2, the first hollow guide column 1-1, the second hollow guide column 2-1, the first contact 1-2, and the second contact 2-2. DETAILED DESCRIPTION

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, an electrical connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two components. The circuit unit mentioned in the present invention is a basic functional circuit module, which is a conventional technology or existing technology. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0013] Embodiment 1, a control device for low-voltage lighting and sound and light alarms, includes a pressure switch S1, a trigger circuit, a single-chip microcomputer circuit, a power supply circuit, a lighting drive circuit, and a sound and light alarm drive circuit. The pressure switch S1 is electrically connected to the trigger circuit so that the trigger circuit can output a trigger signal when the pressure switch S1 is disconnected. The output end of the trigger circuit is electrically connected to the input end of the single-chip microcomputer circuit. The trigger circuit transmits the trigger signal to the single-chip microcomputer circuit. After receiving the trigger signal, the single-chip microcomputer circuit analyzes and processes it and outputs a drive control instruction. The output end of the single-chip microcomputer circuit is electrically connected to the control end of the lighting drive circuit and the sound and light alarm drive circuit. The single-chip microcomputer circuit outputs the above-mentioned control instruction to the lighting drive circuit and the sound and light alarm drive circuit. When the lighting drive circuit receives the control level, the circuit is turned on and drives the light to emit light, thereby illuminating the cabinet body and facilitating maintenance; when the sound and light alarm drive circuit receives the control instruction, the circuit is turned on and drives the sound and light alarm to flash and alarm, thereby serving as a safety reminder to prevent the cabinet door from being opened accidentally without being known.

[0014] The lighting and sound / light alarm drive circuits utilize a triode switch drive circuit structure, with the trigger circuit being a resistor divider circuit. The novelty of this embodiment lies in the components and electrical connections within the control device. The microcontroller's internal processing of input and output signals utilizes conventional techniques, resulting in relatively simple control logic and the ability to delay output control levels depending on the situation.

[0015] In the first embodiment, the power supply circuit is electrically connected to the trigger circuit, the single-chip microcomputer circuit, the light driving circuit, and the sound and light alarm driving circuit, respectively. The power supply circuit converts 220V AC power into 3.3V-12V DC power, providing different DC power supplies for the trigger circuit, the single-chip microcomputer circuit, the light driving circuit, and the sound and light alarm driving circuit. This technology is existing and will not be described in detail here.

[0016] In this embodiment, preferably, the pressure switch includes a first pressure block 1, a second pressure block 2, a first hollow guide column 1-1 and a second hollow guide column 2-1; the first pressure block 1 is fixedly connected to one end of the first hollow guide column 1-1, the second pressure block 2 is fixedly connected to one end of the second hollow guide column 2-1, the other end of the first hollow guide column 1-1 is sleeved within the other end of the second hollow guide column 2-1 and can move within a limited position, a reset spring 3 is arranged between the first pressure block 1 and the second hollow guide column 2-1, the reset spring 3 is sleeved on the first hollow guide column 1-1, the first pressure block 1 is provided with a first contact 1-2, and the second pressure block 2 is provided with a second contact 2-2, and under the action of external force, the first contact 1-2 and the second contact 2-2 move toward each other and contact each other on the first pressure block 1 and the second pressure block 2. The other end of the first hollow guide post 1-1 is provided with a flange extending radially outward, and the other end of the second hollow guide post 2-1 is provided with a clamping portion extending radially inward. The flange of the first hollow guide post 1-1 moves within the second hollow guide post 2-1 and is limited by the clamping portion to form a limited movement. Preferably, the first contact 1-2 is provided within the first hollow guide post 1-1, and the second contact 2-2 is provided within the second hollow guide post 2-1. The first contact 1-2 and the second contact 2-2 are arranged facing each other, and the wires connect the two contacts respectively. Under the action of the reset spring, the flange of the first hollow guide post and the clamping portion of the second hollow guide post are tightly in contact, and the two contacts are spaced apart and in a disconnected state. When the external force applied to the first pressure block 1 and the second pressure block 2 is greater than the elastic force of the reset spring, the first contact 1-2 and the second contact 2-2 move toward each other until they are in contact and in a closed state.

[0017] In this embodiment, Figure 3 The trigger circuit is a resistor voltage divider circuit. The first contact 1-2 and the second contact 2-2 of the pressure switch S1 are connected to the resistor voltage divider circuit through wires so that a trigger signal is generated when the pressure switch S1 is reset. The resistor voltage divider circuit is composed of resistors R1 and R2 in series. When the pressure switch S1 is closed, a low level is input to the single-chip microcomputer; when the pressure switch S1 is disconnected, a high level trigger signal is input to the single-chip microcomputer. The lighting drive circuit and the sound and light alarm drive circuit are completed using a controllable transistor switch drive circuit structure. The controllable transistor switch drive circuit is a conventional technology and existing technology. Figure 4 The siren driver circuit consists of a controllable transistor Q1, resistors R5, R6, and R7, and a manual switch K2. K2 connects VCC and the controllable transistor Q1. The output of the microcontroller circuit is connected to the control terminal of the controllable transistor Q1 through resistor R5. The output of the controllable transistor Q1 is connected to resistors R7 and R8, indirectly connecting the siren. When the microcontroller circuit outputs a high-level control command, the siren driver circuit activates, driving the siren to sound. Manual switch K2 can be used to manually turn it off. The microcontroller circuit is conventional and will not be explained in detail here.

[0018] The working principle of the present utility model is as follows: the pressure switch can be closed under the action of an external force, and can be opened with the help of its internal reset member when the external force becomes smaller or zero. The pressure switch is embedded near the cabinet door frame so that the cabinet door applies force to the pressure switch during closing, thereby closing the pressure switch. When the cabinet door is opened, the pressure switch is disconnected, and the trigger circuit generates a high-level trigger signal, which is input to the single-chip microcomputer. The single-chip microcomputer responds, analyzes and outputs control instructions, and controls the drive circuit to drive the lights and sound and light alarms to work, thereby playing the role of lighting and safety warning. When the cabinet door is closed, the cabinet door applies pressure to the pressure switch, the pressure switch is closed, the trigger circuit no longer outputs the trigger signal, the single-chip microcomputer stops outputting the control level, and the lights and sound and light alarms stop working. The present utility model has a simple structure, low cost, and strong practicality.

[0019] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of this module.

[0020] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A low-voltage light and sound and light alarm control device, characterized in that: The pressure switch includes a pressure switch, a trigger circuit, a single-chip microcomputer circuit, a power supply circuit, a light driving circuit, and an audible and visual alarm driving circuit. The pressure switch is electrically connected to the trigger circuit, the output end of the trigger circuit is electrically connected to the input end of the single-chip microcomputer circuit, the output end of the single-chip microcomputer circuit is electrically connected to the control ends of the light driving circuit and the audible and visual alarm driving circuit, and the power supply circuit is electrically connected to the trigger circuit, the single-chip microcomputer circuit, the light driving circuit, and the audible and visual alarm driving circuit, respectively. The pressure switch includes a first pressure block, a second pressure block, a first hollow guide post, and a second hollow guide post. The first pressure block is fixedly connected to one end of the first hollow guide post, the second pressure block is fixedly connected to one end of the second hollow guide post, and the other end of the first hollow guide post is sleeved within the other end of the second hollow guide post and can move within a limited position. A return spring is provided between the first pressure block and the second hollow guide post, and the return spring is sleeved on the first hollow guide post. The first pressure block is provided with a first contact, and the second pressure block is provided with a second contact. Under the action of external force, the first contact and the second contact move toward each other and contact.

2. The low-voltage light and sound and light alarm control device as claimed in claim 1, characterized in that: The other end of the first hollow guide column is provided with a flange edge extending radially outward, and the other end of the second hollow guide column is provided with a clamping portion extending radially inward. The flange edge of the first hollow guide column moves in the second hollow guide column and is limited by the clamping portion to form a limited movement.

3. The low-voltage light and sound and light alarm control device as claimed in claim 2, characterized in that: The first contact is disposed in a first hollow guide column, the second contact is disposed in a second hollow guide column, and the first contact and the second contact are disposed facing each other.

4. The low-voltage light and sound and light alarm control device as claimed in claim 2, characterized in that: The trigger circuit is a resistor voltage divider circuit, and the first contact and the second contact of the pressure switch are respectively connected in the resistor voltage divider circuit through wires so that a trigger signal is generated when the pressure switch is reset.

5. The low-voltage light and sound and light alarm control device as claimed in claim 2, characterized in that: The light driving circuit is a controllable triode switch driving circuit.

6. The low-voltage light and sound and light alarm control device as claimed in claim 2, characterized in that: The sound and light alarm driving circuit is a controllable triode switch driving circuit.

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