Special line direct control output circuit of fire alarm controller
By designing a CPU fault detection circuit and a key circuit unit in the fire alarm system, the instant response of the fire alarm controller and the linkage control of fire-fighting equipment are realized, solving the problems of insufficient response speed and start-up efficiency in the existing technology, and improving the reliability and fire extinguishing efficiency of the system.
Patent Information
- Application Number
- CN202423220083.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-26
AI Technical Summary
The dedicated line direct control output circuit of the existing fire alarm system is insufficient in terms of rapid response and activation of fire-fighting equipment, which affects fire extinguishing efficiency and system reliability.
A fire alarm controller was designed, comprising a CPU circuit, a power supply circuit, a sound alarm circuit, an indicator light circuit, a CPU fault detection circuit, a dedicated line unit, and a button circuit unit. The CPU fault detection circuit detects the CPU status, and the button circuit unit is used to manually activate the fire-fighting equipment, achieving instant response and linkage control.
It improves the response speed of the fire alarm system and the activation efficiency of fire-fighting equipment, reduces casualties and property losses, and enhances the reliability of the system.
Smart Images
Figure CN223679720U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fire alarm technical field, concretely is a kind of direct control output circuit of fire alarm controller special line. BACKGROUND
[0002] Fire alarm system is one of indispensable safety facilities in modern building, and the direct control output circuit of special line is the key part to ensure that the system can respond quickly and start related fire-fighting equipment. In practical application, the direct control output circuit of special line is widely used in fire alarm system of various building sites. For example, in large-scale shopping malls, high-rise buildings, data centers and other places, fire alarm system is usually equipped with direct control output circuit of special line to ensure that related fire-fighting equipment can be started quickly to carry out fire extinguishing and smoke exhaust operation when fire occurs. The direct control output circuit of special line plays a vital role in fire alarm system. Therefore, when designing and installing fire alarm system, the configuration and performance requirements of the direct control output circuit of special line should be fully considered. SUMMARY
[0003] In order to solve the above technical problems, the utility model provides a direct control output circuit of special line of fire alarm controller, which can realize instant response and linkage control, and can also manually start fire-fighting equipment directly, improve fire extinguishing efficiency, reduce personnel casualties and property losses, and enhance the reliability of the system.
[0004] The technical scheme is as follows: a direct control output circuit of a fire alarm controller, comprising a CPU circuit, a power supply circuit, a sound alarm circuit, an indicator lamp circuit, a CPU fault detection circuit, a direct line unit, a key circuit unit, the CPU circuit comprising a single-chip microcomputer U1 with a model of STM32G030C8T6, the CPU fault detection circuit comprising a resistor R506 and a capacitor C1 connected to the 40-pin of the single-chip microcomputer U1, the other end of the resistor R506 being connected to one end of a resistor R1 and VCC, the other end of the capacitor C1 being connected to one end of a resistor R2, the cathode of a switching diode D14, and the input end of an inverter U9D, the anode of the switching diode D14 and the other end of the resistor R2 being both grounded, the output end of the inverter U9D being connected to the cathode of a diode D15, the anode of the diode D15 being connected to one end of a capacitor C2, the input end of an inverter U9A, and the other end of the resistor R1, the other end of the capacitor C2 being grounded, the output end of the inverter U9A being connected to the input end of an inverter U9B, the output end of the inverter U9B being connected to one end of a resistor R106 and the other end being connected to one end of an indicator lamp D106, the other end of the indicator lamp being grounded; the key circuit unit comprising five identical key circuits, one of the key circuits comprising a switching diode D1, one anode of the switching diode D1 being connected to the 30-pin of the single-chip microcomputer U1, the other anode being connected to one input end of a key of a key with lamp KG1, the other input end of the key of the key with lamp KG1 being connected to the direct line unit, the cathode of the switching diode D1 being connected to the indicator lamp input end of the key with lamp KG1, the indicator lamp output end of the key with lamp KG1 being grounded, one output end of the key of the key with lamp KG1 being connected to VDD, and the other output end being connected to the anode of a switching diode D2, the cathode of the switching diode D2 being grounded; the direct line unit comprising a bus transceiver U2, a latch U3, a drive chip U4, a reference judgment interface circuit, and five adjustment interface circuits, the reference judgment interface circuit comprising a resistor R161 and a resistor R162, one end of the resistor R161 being connected to one end of the resistor R162 and the 11-pin of the single-chip microcomputer U1, the other end of the resistor R161 being grounded, the other end of the resistor R162 being connected to the 1-pin of an interface J2, one of the adjustment interface circuits comprising a resistor R601 connected to the 10-pin of the drive chip U4 at one end, the other end of the resistor R601 being connected to one end of a resistor R501 and the 3-pin of a common mode inductor L101, the 1-pin, 2-pin, and 4-pin of the common mode inductor L101 being connected to the 1-pin, 3-pin, and 4-pin of the interface J2 respectively, the other end of the resistor R501 being connected to one end of a resistor R301, one end of a capacitor C105, and the 20-pin of the single-chip microcomputer U1, the other end of the resistor R301 and the other end of the capacitor C105 being both grounded.
[0005] Further, the sound alarm circuit comprises a voice chip U5, one end of a resistor R109 is connected to the 1 pin of the voice chip U5, the other end of the resistor R109 is connected to the base of a triode Q2, the emitter of the triode Q2 is grounded, and the collector of the triode Q2 is connected to one end of a loudspeaker SP1, the other end of the loudspeaker SP1 is connected to VCC through the parallel connection of a resistor R11 and a resistor R12, one end of a resistor R41 is connected to the 5 pin of the voice chip U5, the other end of the resistor R41 is connected to the 6 pin of the voice chip U5, the 2 pin of the voice chip U5 is connected to the 3 pin of a switch diode D13, one end of a resistor R107 and the 38 pin of the single-chip microcomputer U1 are connected to the 1 pin of the switch diode D13, the 2 pin of the switch diode D13 is connected to the 3 pin of a switch diode D11, one end of a resistor R108, and the 39 pin of the single-chip microcomputer U1, the other end of the resistor R107 is connected to the 1 pin and the 2 pin of a switch diode D12, the 1 pin and the 2 pin of the switch diode D11 are connected and connected to the 3 pin of the switch diode D12, the 3 pin of the voice chip U5, and the other end of the resistor R108 is grounded.
[0006] The indicator lamp circuit comprises a working indicator lamp D101, a fault indicator lamp D102, a starting indicator lamp D103, a feedback indicator lamp D104, and an automatic indicator lamp D105.
[0007] After the utility model is adopted, the CPU fault detection circuit can be used to detect whether the CPU normally works, if the CPU is dead, the overall operation of the fire alarm system can be negatively affected, the key circuit unit can be used for controlling the private line unit, the linkage control with the main control unit can be realized, the fire extinguishing equipment can be directly started manually, the fire extinguishing efficiency is improved, personnel casualty and property loss are reduced, and the reliability of the system is enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is CPU circuit schematic diagram;
[0009] Figure 2 It is power supply circuit schematic diagram;
[0010] Figure 3 It is sound alarm circuit schematic diagram;
[0011] Figure 4 It is indicator lamp circuit schematic diagram;
[0012] Figure 5 It is CPU fault detection circuit schematic diagram;
[0013] Figure 6 It is key circuit unit circuit schematic diagram;
[0014] Figure 7The schematic diagram of the private line unit circuit. DETAILED DESCRIPTION
[0015] See Figures 1 to 7 As shown in the figure, a private line direct control output circuit of a fire alarm controller includes a CPU circuit, a power supply circuit, a sound alarm circuit, an indicator lamp circuit, a CPU fault detection circuit, a private line circuit unit, and a key circuit unit.
[0016] The CPU circuit includes a single-chip microcomputer U1 of model STM32G030C8T6, which is used for the control of the entire circuit.
[0017] The CPU fault detection circuit includes a resistor R506 and a capacitor C1 connected to the 40th pin of the single-chip microcomputer U1, the other end of the resistor R506 is connected to one end of the resistor R1 and VCC, the other end of the capacitor C1 is connected to one end of the resistor R2, the cathode of the switching diode D14, and the input end of the inverter U9D, the anode of the switching diode D14 and the other end of the resistor R2 are both grounded, the output end of the inverter U9D is connected to the cathode of the diode D15, the anode of the diode D15 is connected to one end of the capacitor C2, the input end of the inverter U9A, and the other end of the resistor R1, the other end of the capacitor C2 is grounded, the output end of the inverter U9A is connected to the input end of the inverter U9B, the output end of the inverter U9B is connected to one end of the resistor R106 and one end of the indicator lamp D106, the other end of the indicator lamp D106 is grounded, which is used to detect whether the CPU circuit is working normally, when a fault occurs, the indicator lamp D106 lights up.
[0018] The sound alarm circuit includes a voice chip U5, the 1st pin of the voice chip U5 is connected to one end of the resistor R109, the other end of the resistor R109 is connected to the base of the triode Q2, the emitter of the triode Q2 is grounded, and the collector is connected to one end of the loudspeaker SP1, the other end of the loudspeaker SP1 is connected to VCC through the parallel connection of the resistor R11 and the resistor R12, the 5th pin of the voice chip U5 is connected to one end of the resistor R41, the other end of the resistor R41 is connected to the 6th pin of the voice chip U5, the 2nd pin of the voice chip U5 is connected to the 3rd pin of the switching diode D13, the 1st pin of the switching diode D13 is connected to one end of the resistor R107 and the 38th pin of the single-chip microcomputer U1, the 2nd pin of the switching diode D13 is connected to the 3rd pin of the switching diode D11, one end of the resistor R108, and the 39th pin of the single-chip microcomputer U1, the other end of the resistor R107 is connected to the 1st and 2nd pins of the switching diode D12, the 1st and 2nd pins of the switching diode D11 are connected and connected to the 3rd pin of the switching diode D12 and the 3rd pin of the voice chip U5, the other end of the resistor R108 is grounded; the indicator lamp circuit includes a working indicator lamp D101, a fault indicator lamp D102, a starting indicator lamp D103, a feedback indicator lamp D104, and an automatic indicator lamp D105.
[0019] The power supply circuit includes 24C to 5V (VCC) circuit and DC 5V to VC 3.3V circuit, which ensures normal power supply of the system.
[0020] The key circuit unit includes five same key circuits, one of which includes a switching diode D1, one anode of the switching diode D1 is connected to the 30th pin of the single-chip microcomputer U1, the other anode is connected to one input end of the key of the lighted key KG1, the other input end of the key of the lighted key KG1 is connected to the special line circuit unit, the cathode of the switching diode D1 is connected to the input end of the indicator light of the lighted key KG1, the output end of the indicator light of the lighted key KG1 is grounded, one output end of the key of the lighted key KG1 is connected to VDD, the other output end is connected to the anode of a switching diode D2, the cathode of the switching diode D2 is grounded; the special line circuit unit includes a bus transceiver U2, a latch U3, a driving chip U4, a reference judgment interface circuit and five adjustment interface circuits, the reference judgment interface circuit includes a resistor R161 and a resistor R162, one end of the resistor R161 is connected to one end of the resistor R162 and the 11th pin of the single-chip microcomputer U1, the other end of the resistor R161 is grounded, the other end of the resistor R162 is connected to the 1st pin of the interface J2, one of the adjustment interface circuits includes a resistor R601 connected to the 10th pin of the driving chip U4, the other end of the resistor R601 is connected to one end of a resistor R501, the 3rd pin of a common mode inductor L101, the 1st pin, the 2nd pin and the 4th pin of the common mode inductor L101 are respectively connected to the 1st pin, the 3rd pin and the 4th pin of the interface J2, the other end of the resistor R501 is connected to one end of a resistor R301, one end of a capacitor C105 and the 20th pin of the single-chip microcomputer U1, the other end of the resistor R301 and the other end of the capacitor C105 are both grounded.
[0021] Under normal circumstances, the single-chip microcomputer U1 controls the driving chip U3 to work through the bus transceiver U2 and the latch U3; when the single-chip microcomputer U1 appears dead and the like, the key start mode can be adopted, KG1, KG2, KG3, KG4 and KG5 are five lighted keys, the key start is still effective under the condition of CPU failure, JV1, JV2, JV3, JV4 and JV5 are five real-time monitoring ports for the voltage on the five special line interface lines, the data converted by the analog-to-digital conversion is used to judge the state of the special line (normal, failure, start, feedback, start feedback); JV0 is used to judge the size of the DC+ reference voltage, then JV1, JV2, JV3, JV4 and JV5 adjust the special line state judgment condition according to the value of JV0 as a reference. In order to prevent external interference signals from causing abnormal conditions such as false start of the special line, five common mode inductors L101, L102, L103, L104 and L105 are added at the special line interface, which mainly improves the anti-interference ability of the special line and improves the stability of the line.
Claims
1. A direct control output circuit of a fire alarm controller, comprising a CPU circuit, a power supply circuit, a sound alarm circuit, an indicator lamp circuit, a CPU fault detection circuit, a direct line unit, a key circuit unit, the CPU circuit comprising a single-chip microcomputer U1 of model STM32G030C8T6, the CPU fault detection circuit comprising a resistor R506 and a capacitor C1 connected to the 40-pin of the single-chip microcomputer U1, the other end of the resistor R506 being connected to one end of a resistor R1 and VCC, the other end of the capacitor C1 being connected to one end of a resistor R2, a cathode of a switching diode D14, and an input end of an inverter U9D, the anode of the switching diode D14 and the other end of the resistor R2 both being grounded, the output end of the inverter U9D being connected to a cathode of a diode D15, the anode of the diode D15 being connected to one end of a capacitor C2, an input end of an inverter U9A, and the other end of the resistor R1, the other end of the capacitor C2 being grounded, the output end of the inverter U9A being connected to an input end of an inverter U9B, the output end of the inverter U9B being connected to one end of a resistor R106 and the other end being connected to one end of an indicator lamp D106, the other end of the indicator lamp being grounded; the key circuit unit comprising five identical key circuits, one of the key circuits comprising a switching diode D1, one anode of the switching diode D1 being connected to the 30-pin of the single-chip microcomputer U1, the other anode being connected to one input end of a key of a key lamp KG1, the other input end of the key of the key lamp KG1 being connected to the direct line unit, the cathode of the switching diode D1 being connected to an indicator lamp input end of the key lamp KG1, the indicator lamp output end of the key lamp KG1 being grounded, one output end of the key of the key lamp KG1 being connected to VDD, and the other output end being connected to the anode of a switching diode D2, the cathode of the switching diode D2 being grounded; the direct line unit comprising a bus transceiver U2, a latch U3, a driving chip U4, a reference judgment interface circuit, and five adjustment interface circuits, the reference judgment interface circuit comprising a resistor R161 and a resistor R162, one end of the resistor R161 being connected to one end of the resistor R162 and the 11-pin of the single-chip microcomputer U1, the other end of the resistor R161 being grounded, the other end of the resistor R162 being connected to the 1-pin of an interface J2, one of the adjustment interface circuits comprising a resistor R601 connected to the 10-pin of the driving chip U4 at one end, the other end of the resistor R601 being connected to one end of a resistor R501 and the 3-pin of a common mode inductor L101, the 1-pin, 2-pin, and 4-pin of the common mode inductor L101 being connected to the 1-pin, 3-pin, and 4-pin of the interface J2 respectively, the other end of the resistor R501 being connected to one end of a resistor R301, one end of a capacitor C105, and the 20-pin of the single-chip microcomputer U1, the other end of the resistor R301 and the other end of the capacitor C105 both being grounded.
2. A dedicated control output circuit for a fire alarm control unit according to claim 1, wherein, The sound alarm circuit includes voice chip U5, 1 pin of the voice chip U5 is connected with one end of resistor R109, the other end of the resistor R109 is connected with the base of triode Q2, the emitter of the triode Q2 is grounded, the collector of the triode Q2 is connected with one end of loudspeaker SP1, the other end of the loudspeaker SP1 is connected with VCC through parallel resistor R11 and resistor R12, 5 pin of the voice chip U5 is connected with one end of resistor R41, the other end of the resistor R41 is connected with 6 pin of the voice chip U5, 2 pin of the voice chip U5 is connected with 3 pin of switch diode D13, 1 pin of the switch diode D13 is connected with one end of resistor R107 and 38 pin of the single-chip microcomputer U1, 2 pin of the switch diode D13 is connected with 3 pin of switch diode D11, one end of resistor R108 and 39 pin of the single-chip microcomputer U1, the other end of the resistor R107 is connected with 1 pin and 2 pin of switch diode D12, 1 pin and 2 pin of the switch diode D11 are connected and connected with 3 pin of the switch diode D12, 3 pin of the voice chip U5, the other end of the resistor R108 is grounded.
3. A dedicated control output circuit for a fire alarm control unit according to claim 1, wherein, The indicator lamp circuit includes working indicator lamp D101, fault indicator lamp D102, starting indicator lamp D103, feedback indicator lamp D104 and automatic indicator lamp D105.