Door magnetic switch with voice broadcast function

Abstract

The utility model relates to the technical field of door magnetic switches, and particularly discloses a door magnetic switch with a voice broadcast function, which comprises a door magnetic switch body and a door magnetic magnet, and a reed switch matched with the door magnetic magnet is arranged on the door magnetic switch body. The door magnetic switch body is provided with a two-bus interface circuit, a power conversion circuit, an external magnetic resistance interface circuit, a main control circuit, an indicating lamp circuit and a voice broadcast circuit, and the two-bus interface circuit, the power conversion circuit, the external magnetic resistance interface circuit, the indicating lamp circuit and the voice broadcast circuit are all electrically connected with the main control circuit. According to the utility model, the access management problem of the key fireproof door in the fire-fighting field of the chemical industry is solved, the technical level of the monitoring system is improved on the whole, the maintenance is convenient, and the requirement of the chemical industry on the real-time state control of the door is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to door magnetic switch technical field, especially in a door magnetic switch with voice broadcast function. BACKGROUND

[0002] Door magnetic switch is divided into two parts, one part is the door magnetic magnet above the door leaf, it will be away from or close to the door frame with the fireproof door opening, another part is the door magnetic switch main body installed above the door frame, it is a normally open dry reed inside.When the door is closed, the main body on the door frame and the magnet on the door leaf are close, the magnet will make the dry reed close, the door magnetic main body will give the fireproof door monitor the signal of closing the fireproof door.When the door is opened, they are away, the dry reed is in the normally open state, the door magnetic main body will give the fireproof door monitor the signal of opening the fireproof door.

[0003] Traditional door magnetic switch adopts two bus power supply and communication, when the door magnetic state changes, the state of door magnetic switch is fed back to the fire control room through two bus, so that the on-duty personnel can make the treatment.But when using door magnetic switch in chemical industry, the state monitoring of door is required to be timely, the fireproof door monitoring in chemical industry needs to ensure that the door can be opened in time when fire occurs, and also needs to ensure that the door cannot be opened for a long time under non-fire conditions, therefore, when the door is opened by a person, the monitoring host of fire control needs to alarm accurately, and also needs to give necessary prompt to the person who opens the door, prompting the person to close the door as soon as possible after opening the door.However, the existing door magnetic switch cannot meet the needs of real-time state control of door in chemical industry, and it is necessary to improve the existing door magnetic switch. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem, in view of the above-mentioned defects of prior art, provide a kind of door magnetic switch with voice broadcast function, solve the key fire door access management problem in the fire control field of chemical industry, improve the technical level of monitoring system as a whole, facilitate maintenance, meet the needs of real-time state control of door in chemical industry.

[0005] In order to solve the above technical problems, the technical scheme of the utility model is:

[0006] A kind of door magnetic switch with voice broadcast function, including door magnetic switch body and door magnetic magnet, the dry reed that is adapted to the door magnetic magnet is provided on the door magnetic switch body, two bus interface circuit, power conversion circuit, external magnetic resistance interface circuit, main control circuit, indicator light circuit and voice broadcast circuit are provided on the door magnetic switch body, the two bus interface circuit, power conversion circuit, external magnetic resistance interface circuit, indicator light circuit and voice broadcast circuit are all electrically connected with the main control circuit.

[0007] Preferably, the main control circuit includes a microcontroller chip U1, resistors R2, R3, R5, R6, capacitors C1 and C2, and all resistors R2, R3, R5, R6, C1, and C2 are connected to the microcontroller chip U1.

[0008] Preferably, the dual-bus interface circuit includes a slave communication chip U1, a communication interface J1, a fuse F1, a resistor R1, a resistor R4, and a Zener diode T1. The slave communication chip U1 is connected to the microcontroller chip U1, the communication interface J1, the fuse F1, the resistor R1, the resistor R4, and the Zener diode T1, respectively.

[0009] Preferably, the power conversion circuit includes a voltage conversion chip U3, an inductor L1, a resistor R7, a resistor R9, a capacitor C3, a capacitor C4, and a capacitor C5. The resistors R7 and R9, and the capacitors C3, C4, and C5 are all connected to the inductor L1. The voltage conversion chip U3 and the inductor L1 are both connected to the microcontroller chip U1.

[0010] Preferably, the external magnetoresistive interface circuit includes an optocoupler U4, an optocoupler U6, an external magnetoresistive interface J4, and a magnetic sensor mounted on the reed switch. The external magnetoresistive interface J4 is connected to the magnetic sensor, the optocoupler U4, and the optocoupler U6, respectively. The optocoupler U4 and the optocoupler U6 are both connected to the microcontroller chip U1.

[0011] Preferably, the indicator circuit includes LED D1, LED D2, resistor R11 and resistor R12, wherein resistor R11 and resistor R12 are respectively connected to LED D1 and LED D2, and LED D1 and LED D2 are both connected to the microcontroller chip U1.

[0012] Preferably, the voice broadcasting circuit includes a voice chip U5, a voice chip peripheral circuit, a speaker and a speaker interface J3. The speaker is connected to the speaker interface J3, and the voice chip peripheral circuit, the speaker interface J3 and the microcontroller chip U1 are all connected to the voice chip U5.

[0013] By adopting the above technical solution, the magnetic door switch with voice broadcast function provided by this utility model has the following beneficial effects: the two-bus interface circuit, power conversion circuit, external magnetoresistive interface circuit, indicator light circuit, and voice broadcast circuit in the magnetic door switch are all electrically connected to the main control circuit. It communicates with the fire alarm control panel through the two-bus interface circuit and with the magnetic sensor through the external magnetoresistive interface. The signal output by the fire alarm control panel reaches the main control circuit through the two-bus interface circuit, and the main control feedback signal reaches the fire alarm control panel through the two-bus interface circuit. This can effectively monitor the opening and closing status of the fire door and transmit fault alarm information. The two-bus interface circuit uploads its own working status, which is convenient for the unified management of the fire equipment power status monitor. At the same time, it is used to issue a voice alarm reminder within a specified time after the fire door / escape door is opened, thereby ensuring local reminder of the door opening and closing status and meeting the needs of the chemical industry for real-time door status control. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0015] Fig. 2 This is the circuit schematic diagram of this utility model;

[0016] In the diagram, 1-door magnetic switch body, 2-door magnetic magnet, 3-reed switch, 4-PCB circuit board, 5-speaker. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] like Figs. 1-2 As shown, the door magnetic switch with voice broadcast function includes a door magnetic switch body 1 and a door magnetic magnet 2. The door magnetic switch body 1 is provided with a reed switch 3 adapted to the door magnetic magnet 2. The door magnetic switch body 1 is provided with a two-bus interface circuit, a power conversion circuit, an external magnetoresistive interface circuit, a main control circuit, an indicator light circuit, and a voice broadcast circuit. The two-bus interface circuit, the power conversion circuit, the external magnetoresistive interface circuit, the indicator light circuit, and the voice broadcast circuit are all electrically connected to the main control circuit. Understandably, the magnetic door switch body 1 includes a housing, which can be made of cold-rolled steel. The circuit components of the two-wire interface circuit, power conversion circuit, external magnetoresistive interface circuit, main control circuit, indicator light circuit, and voice broadcast circuit can be integrated onto a PCB circuit board 4 and installed inside the magnetic door switch body 1. A magnetic sensor is installed inside the reed switch 3. The PCB circuit board 4 is connected to the magnetic sensor and the speaker 5 via a power line. In practical applications, the magnetic door switch body 1 is installed above the door frame, and the magnetic door magnet 2 is correspondingly installed above the door leaf. When the door is closed, the magnetic door switch body 1 transmits the fire door closing signal to the fire door monitor or fire alarm control panel via the two-wire interface circuit. When the door is open, the reed switch 3 moves away from the magnetic door magnet 2, and the reed switch 3 is in the normally open state. The magnetic door switch body 1 then transmits the fire door opening signal to the fire door monitor or fire alarm control panel via the two-wire interface circuit.

[0021] Specifically, the main control circuit includes a microcontroller chip U1, resistors R2, R3, R5, and R6, and capacitors C1 and C2. All resistors R2, R3, R5, R6, C1, and C2 are connected to the microcontroller chip U1. It is understood that the microcontroller chip U1 uses a high-performance ARM processor HK32F030MF4P6 to analyze the information received by the isolated input / output module in real time, synchronously control the transmission, and perform normal node inspection and setting functions, as well as information acquisition from the voice door sensor itself. It also simultaneously acquires the input magnetic sensor signal and controls the voice output signal.

[0022] Specifically, the two-bus interface circuit includes a slave communication chip U1, a communication interface J1, a fuse F1, resistors R1 and R4, and a Zener diode T1. The slave communication chip U1 is connected to the microcontroller chip U1, the communication interface J1, the fuse F1, the resistors R1 and R4, and the Zener diode T1. It is understood that the slave communication chip U1 uses the PB300 chip, a two-bus technology slave communication chip that employs voltage transmission and current signal feedback, providing high communication anti-interference capability and ensuring reliable and stable operation of the system under various electromagnetic environments. Simultaneously, overcurrent protection and a surge protection circuit composed of the Zener diode T1, resistors R1 and R4 are designed at the input end to prevent external surges from impacting the magnetic switch.

[0023] Specifically, the power conversion circuit includes a voltage conversion chip U3, an inductor L1, resistors R7 and R9, and capacitors C3, C4, and C5. Resistors R7 and R9, and capacitors C3, C4, and C5 are all connected to inductor L1. The voltage conversion chip U3 and inductor L1 are both connected to the microcontroller chip U1. It is understood that the voltage conversion chip U3 uses a KIA1117-3.3 chip. This power conversion circuit employs one high-efficiency DC-DC converter with a conversion efficiency of over 90%, resulting in lower controller power consumption. One DC-DC converter converts 24V to 5V for the power amplifier module (i.e., the voice broadcast circuit), and the other LDO converts 5V to 3.3V for the main control circuit.

[0024] Specifically, the external magnetoresistive interface circuit includes optocoupler U4, optocoupler U6, external magnetoresistive interface J4, and a magnetic sensor mounted on the reed switch. The external magnetoresistive interface J4 is connected to the magnetic sensor, optocoupler U4, and optocoupler U6, respectively. Optocouplers U4 and U6 are both connected to the microcontroller chip U1. Understandably, the magnetic sensor signal is received through optocouplers U4, U6, and external magnetoresistive interface J4. Simultaneously, it judges the externally input left and right door magnetic sensor signals. The isolated signals are connected to the main control circuit for acquisition via the GHO and GH1 terminals on optocouplers U4 and U6. The main control circuit determines the status of the magnetic sensor and returns this status to the fire alarm control panel. This circuit optically isolates the signal from the external magnetic sensor to prevent damage to the equipment from external surges. Simultaneously, the separate external magnetic sensor, connected via terminals, facilitates sealing, potting, and wiring of the magnetic sensor, meeting the needs of the chemical industry.

[0025] Specifically, the indicator light circuit includes LEDs D1 and D2, resistors R11 and R12. Resistors R11 and R12 are connected to LEDs D1 and D2, respectively. Both LEDs D1 and D2 are connected to the microcontroller chip U1. Understandably, the LED_G indicator (i.e., LED D1) – a green indicator – represents a normal door status, while the LED_R indicator (i.e., LED D2) – a red indicator – represents an abnormal door status. A voice prompt is also provided via the voice broadcast circuit.

[0026] Specifically, the voice broadcasting circuit includes a voice chip U5, peripheral circuitry for the voice chip, a speaker, and a speaker interface J3. The speaker 5 is connected to the speaker interface J3. The peripheral circuitry for the voice chip, the speaker interface J3, and the microcontroller chip U1 are all connected to the voice chip U5. The peripheral circuitry for the voice chip includes resistors R14-R17 and capacitors C16, C18, C19, and C21-C24 connected to the voice chip U5. The voice chip U5 uses the WTN6040FP-14S chip, which has a PWM audio output type and a built-in Class D audio power amplifier circuit, capable of directly driving a 4-ohm 3W speaker. Its output can operate normally without LC filtering, reducing EMI interference across the entire bandwidth and minimizing the impact on other components. Currently, the voice content is 40 seconds long, the audio sampling rate can reach up to 32kHz, and there are 16 levels of volume control. The chip's clock frequency is 13.1072 (±3%) MHz. The chip's internal voice content can be changed online via a programmer. The voice chip U5 can store various voices. J3 is an external speaker interface, and the external speaker (i.e., speaker 5) outputs voice through a speaker hole on the casing. The BUSY, CLK, and DATA signals in the voice chip U5 form an I2C external communication interface, and the main control circuit can control the playback, pause, and interruption of voice through the I2C circuit.

[0027] Understandably, this utility model has a reasonable design and unique structure, and has the following advantages in practical applications:

[0028] It can effectively monitor the opening and closing status of fire doors and transmit fault alarm information; it uploads its own working status for unified management by the fire equipment power status monitor; it also issues a voice alarm reminder within a specified time after a fire door / escape door is opened. The voice emitted by the alarm can be in standard Mandarin, with clear pronunciation and appropriate speaking speed, thus ensuring on-site reminders of door opening and closing status and meeting the needs of the chemical industry for real-time door status control. The voice alarm function can also be flexibly configured via a two-wire bus. When the fire control panel is configured to disable the on-site fire door detection module, the corresponding voice alarm can be uncontrollably activated after the door is opened.

[0029] • Supports audio playback with sampling rates from 6K to 32Khz, and supports up to 224 address voice segments;

[0030] • The content played via voice can be set and adjusted for flexible use.

[0031] • It can extend the local voice capabilities of the fire equipment status monitor, forming a more complete and stable monitoring network;

[0032] The system uses the F-BUS fire protection bus as a communication platform to ensure reliable and stable operation under various electromagnetic environments.

[0033] • The machine body is compact and flexible, easy to install, and the cold-rolled steel shell ensures explosion-proof requirements;

[0034] • Easier to debug and test, the external speaker ensures that the sound decibels are clear enough.

[0035] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A door magnetic switch with voice broadcast function, comprising a door magnetic switch body and a door magnetic magnet, wherein the door magnetic switch body is provided with a reed switch adapted to the door magnetic magnet, characterized in that: The magnetic door switch body is equipped with a dual-bus interface circuit, a power conversion circuit, an external magnetoresistive interface circuit, a main control circuit, an indicator light circuit, and a voice broadcast circuit. The dual-bus interface circuit, the power conversion circuit, the external magnetoresistive interface circuit, the indicator light circuit, and the voice broadcast circuit are all electrically connected to the main control circuit.

2. The door magnetic switch with voice broadcast function according to claim 1, characterized in that: The main control circuit includes a microcontroller chip U1, resistors R2, R3, R5, R6, capacitors C1 and C2, and all resistors R2, R3, R5, R6, C1, and C2 are connected to the microcontroller chip U1.

3. The door magnetic switch with voice broadcast function according to claim 2, characterized in that: The dual-bus interface circuit includes a slave communication chip U1, a communication interface J1, a fuse F1, a resistor R1, a resistor R4, and a Zener diode T1. The slave communication chip U1 is connected to the microcontroller chip U1, the communication interface J1, the fuse F1, the resistor R1, the resistor R4, and the Zener diode T1.

4. The door magnetic switch with voice broadcast function according to claim 2, characterized in that: The power conversion circuit includes a voltage conversion chip U3, an inductor L1, a resistor R7, a resistor R9, a capacitor C3, a capacitor C4, and a capacitor C5. The resistors R7 and R9, and the capacitors C3, C4, and C5 are all connected to the inductor L1. The voltage conversion chip U3 and the inductor L1 are both connected to the microcontroller chip U1.

5. The door magnetic switch with voice broadcast function according to claim 2, characterized in that: The external magnetoresistive interface circuit includes an optocoupler U4, an optocoupler U6, an external magnetoresistive interface J4, and a magnetic sensor mounted on the reed switch. The external magnetoresistive interface J4 is connected to the magnetic sensor, the optocoupler U4, and the optocoupler U6, respectively. The optocoupler U4 and the optocoupler U6 are both connected to the microcontroller chip U1.

6. The door magnetic switch with voice broadcast function according to claim 2, characterized in that: The indicator circuit includes LED D1, LED D2, resistor R11, and resistor R12. Resistors R11 and R12 are connected to LED D1 and LED D2, respectively. LED D1 and LED D2 are both connected to the microcontroller chip U1.

7. The door magnetic switch with voice broadcast function according to claim 2, characterized in that: The voice broadcasting circuit includes a voice chip U5, a voice chip peripheral circuit, a speaker and a speaker interface J3. The speaker is connected to the speaker interface J3, and the voice chip peripheral circuit, the speaker interface J3 and the microcontroller chip U1 are all connected to the voice chip U5.

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