A fire display panel

Abstract

This utility model relates to a fire display panel, belonging to the technical field of fire display equipment. The control circuit includes a core control section and relay circuits, key scanning circuits, key circuits, indicator light circuits, power supply circuits, reset circuits, bus communication circuits, and alarm sound circuits connected to the core control section. The core control section includes a microcontroller SM59624. Pins 1, 2, and 3 of the BC7281 chip in the key scanning circuit are connected to pins 30, 25, and 24 of the microcontroller SM59624, respectively. The XS port, FJ port, and XJ port of the indicator light circuit are connected to pins 34, 1, and 26 of the microcontroller SM59624, respectively. The reset circuit is connected to pin 10 of the microcontroller SM59624. The two FS ports of the alarm sound circuit are connected to pin 17 of the microcontroller SM59624.

Description

Technical Field

[0001] This utility model relates to a fire display panel, belonging to the technical field of fire display equipment. Background Technology

[0002] As a crucial terminal device in a fire alarm system, the core function of a fire display panel is to locally display and provide feedback on information transmitted from the fire alarm controller, thereby improving the efficiency of alarm information transmission and response speed. Currently, fire display panels on the market typically need to be compatible with specific models of fire alarm controllers to ensure communication stability and the accuracy of information interpretation.

[0003] The application of fire alarm display panels effectively compensates for the limitations of centralized display in fire alarm controllers. In commercial complexes, large venues, high-rise buildings and other places, it provides localized alarm information support for security personnel and managers in different areas, which helps to speed up the initial response to a fire and buys valuable time for evacuation guidance and initial fire fighting. It is an important component in improving the overall effectiveness of fire alarm systems.

[0004] We designed a fire display panel with a completely new control circuit. Utility Model Content

[0005] The purpose of this invention is to provide a fire display panel with a novel control circuit.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A fire display panel includes a panel housing and a control circuit housed within the housing. The control circuit includes a core control section and relay circuits, key scanning circuits, key circuits, indicator light circuits, power supply circuits, reset circuits, bus communication circuits, and alarm sound circuits connected to the core control section. The core control section includes a microcontroller SM59624. The key scanning circuit includes a chip BC7281, with pins 1, 2, and 3 of the BC7281 connected to pins 30, 25, and 24 of the microcontroller SM59624, respectively. The indicator light circuit includes the XS port and FJ port. The port and XJ port are connected to pins 34, 1, and 26 of the SM59624 microcontroller, respectively; the reset circuit is connected to pin 10 of the SM59624 microcontroller; the alarm sound circuit includes the NESS6 chip, and the two FS ports of the alarm sound circuit are connected to pin 17 of the SM59624 microcontroller; the FJ1 and FJ0 ports of the relay circuit are connected to pins 27 and 28 of the SM59624 microcontroller, respectively; the bus communication circuit is equipped with external terminals B+ and B-; the ANS port of the bus communication circuit is connected to pin 16 of the SM59624 microcontroller.

[0008] A further improvement to this technical solution is that the power supply circuit uses the LM2576 chip.

[0009] A further improvement to this technical solution is that the button circuit includes five button branches, namely K1, K2, K3, K4, and K5.

[0010] A further improvement to this technical solution is that the reset circuit uses an IMP809 chip.

[0011] A further improvement to this technical solution is as follows: the key scanning circuit is also equipped with chip U2 and chip U3, and both chip U1 and chip U2 are 74HCT164; pin 1 and pin 2 of chip U2 are connected to pin 20 of chip BC7281; pin 8 of chip U2 is connected to pin 19 of chip BC7281; pin 8 of chip U3 is connected to pin 19 of chip BC7281.

[0012] Due to the adoption of the above technical solution, the technical effects achieved by this utility model are as follows:

[0013] This fire display panel is compatible with the fire alarm controller and is connected to the fire alarm detector bus loop. It communicates with the controller using a non-polarized two-bus method. It continuously receives signals from the two buses, and then uses a microprocessor to judge, analyze and process the signals, display the detector codes that are alarming in the loop, and at the same time send its selected response signal back to the host. Attached Figure Description

[0014] Figure 1 This is a circuit diagram of the present invention. Detailed Implementation

[0015] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. The connection method in this technical solution refers to the electrical connection method.

[0016] This technical solution is a fire display panel, a device used for fire display in a fire protection system. The fire display panel is used in conjunction with or in conjunction with an alarm controller. The fire display panel includes a housing, within which a control circuit is housed. This technical solution features a completely new control circuit design.

[0017] like Figure 1 As shown, the control circuit mainly includes a core control section and several functional circuits. These functional circuits include relay circuits, key scanning circuits, key circuits, indicator light circuits, power supply circuits, reset circuits, bus communication circuits, and alarm sound circuits. The functional circuits are connected to the core control section to achieve the overall functionality.

[0018] The core control section mainly includes the SM59624 microcontroller, which is essentially the brain of the entire control circuit.

[0019] The key scanning circuit includes a chip BC7281, wherein pin 1 of the chip BC7281 is connected to pin 30 of the microcontroller SM59624; pin 2 of the chip BC7281 is connected to pin 25 of the microcontroller SM59624; and pin 3 of the chip BC7281 is connected to pin 24 of the microcontroller SM59624.

[0020] The indicator light circuit has an XS port, an FJ port, and an XJ port; the XS port is connected to pin 34 of the SM59624 microcontroller. The FJ port is connected to pin 1 of the SM59624 microcontroller. The XJ port is connected to pin 26 of the SM59624 microcontroller.

[0021] The reset circuit is connected to pin 10 of the SM59624 microcontroller. Preferably, the chip used in the reset circuit is an IMP809.

[0022] The alarm sound circuit includes the NESS6 chip, which has two FS ports, both of which are connected to pin 17 of the SM59624 microcontroller.

[0023] The relay circuit has an FJ1 port and an FJ0 port. The FJ1 port is connected to pin 27 of the SM59624 microcontroller, and the FJ0 port is connected to pin 28 of the SM59624 microcontroller.

[0024] The bus communication circuit is equipped with external terminals B+ and B- for connecting to external devices. The bus communication circuit also has an ANS port for connection to pin 16 of the SM59624 microcontroller.

[0025] The power supply circuit used in this control circuit is an LM2576 chip.

[0026] The control circuit is equipped with a button circuit, which includes five button branches: K1, K2, K3, K4, and K5.

[0027] The key scanning circuit also includes chips U2 and U3. Both chips U1 and U2 are 74HCT164. Specifically, pins 1 and 2 of chip U2 are connected to pin 20 of chip BC7281; pin 8 of chip U2 is connected to pin 19 of chip BC7281; and pin 8 of chip U3 is connected to pin 19 of chip BC7281.

[0028] For details regarding the specific components and connection methods of the circuit, please refer to the attached diagram in the instruction manual, which provides a detailed illustration.

[0029] The main technical specifications of this fire display panel are as follows:

[0030] 1) Communication interface: It can be directly connected to the controller bus loop, or use CAN interface for communication.

[0031] 2) Maximum display capacity: 252 dots.

[0032] 3) Keyboard: 5 keys for operating the display panel or inputting data.

[0033] 4) Power supply: DC (18V~28V).

[0034] 5) Operating environment: Temperature -10℃~50℃.

[0035] 6) Relative humidity: <95%RH.

[0036] This fire display panel uses an LCD display and is compatible with the fire alarm controller. It is connected to the fire alarm detector bus loop and communicates with the controller using a non-polarized two-bus method. It continuously receives signals from the two buses, and then the microprocessor judges, analyzes and processes the signals to display the alarm detector codes in the loop. At the same time, it sends the selected response signal back to the host. Its maximum display capacity is 252 alarm points.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fire display panel, comprising a display panel housing, and a control circuit disposed within the display panel housing, characterized in that: The control circuit includes a core control section and relay circuits, key scanning circuits, key circuits, indicator light circuits, power supply circuits, reset circuits, bus communication circuits, and alarm sound circuits connected to the core control section. The core control unit includes the SM59624 microcontroller; The key scanning circuit includes the BC7281 chip; pins 1, 2 and 3 of the BC7281 chip are connected to pins 30, 25 and 24 of the microcontroller SM59624, respectively. The XS port, FJ port, and XJ port of the indicator light circuit are connected to pins 34, 1, and 26 of the microcontroller SM59624, respectively. The reset circuit is connected to pin 10 of the SM59624 microcontroller; The alarm sound circuit includes the NESS6 chip, and the two FS ports of the alarm sound circuit are connected to pin 17 of the microcontroller SM59624. The FJ1 and FJ0 ports of the relay circuit are connected to pins 27 and 28 of the microcontroller SM59624, respectively. The bus communication circuit is equipped with external terminals B+ and B-; the ANS port of the bus communication circuit is connected to pin 16 of the microcontroller SM59624.

2. The fire display panel according to claim 1, characterized in that: The power supply circuit uses the LM2576 chip.

3. The fire display panel according to claim 1, characterized in that: The button circuit includes five button branches, namely K1, K2, K3, K4, and K5.

4. The fire display panel according to claim 1, characterized in that: The reset circuit uses the IMP809 chip.

5. The fire display panel according to claim 1, characterized in that: The key scanning circuit also includes chips U2 and U3. Both chips U1 and U2 are 74HCT164. Pins 1 and 2 of chip U2 are connected to pin 20 of chip BC7281. Pin 8 of chip U2 is connected to pin 19 of chip BC7281. Pin 8 of chip U3 is connected to pin 19 of chip BC7281.

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