CN210839061U - Power supply management circuit of household fire alarm controller - Google Patents
Power supply management circuit of household fire alarm controller Download PDFInfo
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- CN210839061U CN210839061U CN201921943937.7U CN201921943937U CN210839061U CN 210839061 U CN210839061 U CN 210839061U CN 201921943937 U CN201921943937 U CN 201921943937U CN 210839061 U CN210839061 U CN 210839061U
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- Prior art keywords
- resistor
- power
- power supply
- pin
- interface
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- 239000003990 capacitor Substances 0.000 claims abstract description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 1
- 238000009436 residential construction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of fire alarm circuits, in particular to a power management circuit of a household fire alarm controller, which can detect the power supply condition at any time and ensure the continuous and normal work of a fire alarm and comprises a main control panel, the main control board is provided with a CPU unit and a DC24V input interface, the DC24C input interface is connected with a power panel, it is characterized in that the power panel is provided with a battery management circuit, a fault detection circuit, a charge-discharge switch circuit and a power input interface circuit, the power input interface comprises a lithium battery interface J5 and a main power interface J3, the battery management circuit comprises a power chip U1, the 20 pin and the 21 pin of the power chip U1 are connected and then connected with one end of a capacitor C204, one end of a resistor R1 and a main power interface J3, the other end of the resistor R1 is connected with one end of a capacitor C203, and the other end of the capacitor C203 and the other end of the capacitor C204 are grounded.
Description
Technical Field
The utility model relates to a fire alarm circuit technical field specifically is a domestic fire alarm controller's power management circuit.
Background
In residential construction, in order to meet the requirements of safe and intelligent family living environment, more and more families are provided with a fire alarm control system, and the function of alarming when fire occurs in the earlier stage is achieved. The household fire alarm system is a device for automatically detecting and displaying fire alarm under the condition that a protected object has a fire, and plays a great role in ensuring the life and property safety of people. The power management circuit is an important component of the household fire alarm controller, the stability of the power management circuit influences whether the whole household fire alarm control system can work normally, and the power management circuit is responsible for the safe power supply of the whole system. Can influence whole fire alarm's work when the external power supply breaks down, current fire alarm can't in time know when the external power supply goes wrong, and fire alarm stops work, can't realize fire alarm.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that current fire alarm takes place unusually to lead to fire alarm inefficacy because of the external power supply, the utility model provides a power management circuit of domestic fire alarm controller, it can detect the power supply condition at any time, guarantees that fire alarm lasts normal work.
The technical scheme is as follows: the utility model provides a domestic fire alarm controller's power management circuit, its includes the main control panel, be provided with CPU unit, DC24V input interface on the main control panel, DC24C input interface connects the power strip, a serial communication port, be provided with battery management circuit, fault detection circuit, charge-discharge switch circuit, power input interface circuit on the power strip, power input interface includes lithium cell interface J5 and main power interface J3, battery management circuit includes power chip U1, 20 feet and 21 feet of power chip U1 connect electric capacity C204 one end, resistance R1 one end, main power interface J3 after linking to each other, electric capacity C203 one end is connected to the resistance R1 other end, the electric capacity C203 other end, electric capacity C204 other end ground connection, electric capacity C108 one end, electric capacity C202 one end, resistance R2 one end, lithium cell interface J5 are connected to the 9 feet of power chip U1, electric capacity C109 one end is connected after 10 feet and 11 feet of power chip U1 link to each other, One end of a capacitor C201, one end of an inductor L5, the other end of the resistor R2, the other end of the inductor L5 is connected with pins 13, 14 and 15 of the power chip U1, the other end of the capacitor C108, the other end of the capacitor C109, the other end of the capacitor C201 and the other end of the capacitor C202 are grounded, pin 3 of the power chip U1 is connected with one end of a resistor R11, one end of a resistor R12 and one end of a capacitor C501, the other end of the capacitor C501 is grounded, pin 16 and pin 17 of the power chip U1 are connected with one end of a capacitor C205, one end of a capacitor C206 and the anode of a diode D302, the cathode of the diode D302 is connected with the cathode of a diode D301, the cathode of a diode D303, one end of the capacitor C301 and one end of the capacitor C302 and outputs VCC to the CPU, the anode of the diode D301 is connected with a main power interface J3, the anode of the diode D5, the pin 1 of the power chip U1 is further connected with the other end of the resistor R11, the pin 24 of the power chip U1 is further connected with the other end of the resistor R12, the pin 22 of the power chip U1 is grounded through a resistor R13, the pin 5 of the power chip U1 is grounded through a resistor R7, and the pins 25, 12 and 7 of the power chip U1 are grounded; the fault detection circuit comprises an operational amplifier U2A, wherein the inverting input end of the operational amplifier U2A is connected with the main power interface J3, the non-inverting input end of the operational amplifier U2A is connected with one end of a single resistor R103 and one end of a resistor R601, the output end of the operational amplifier U2A is connected with one end of a resistor R701 and one end of a resistor R801, the other end of the resistor R701 is connected with the base electrode of a triode Q201, the collector electrode of the triode Q201 is connected with one end of the resistor R901 and the CPU unit, the power supply end of the operational amplifier U2A, the other end of the resistor R901 and the other end of the resistor R103 are all connected with VCC, and the ground end of the operational amplifier U2A, the other end of the resistor R601, the other end of; the charging and discharging switching circuit comprises a triode Q103, a collector of the triode Q103 is connected with the lithium battery interface J5, a base of the triode Q103 is connected with one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R4 is connected with the CPU unit, and the other end of the resistor R5 and an emitter of the triode Q103 are all grounded.
Adopt the utility model discloses afterwards, there are lithium battery interface J5 and main power source interface J3 on the power strip, connect external power source and lithium cell respectively, external power source uses as the main power source, can switch to lithium battery power supply when external power source appears unusually, convert to the voltage of needs by power chip U1, fault detection circuit can real-time detection main power source behavior, charge and discharge switch circuit is used for charging of lithium cell and breaks off when unusual, whole power management circuit can effectively ensure that the system lasts normal work.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
FIG. 2 is a schematic diagram of a battery management circuit;
FIG. 3 is a schematic diagram of a CPU unit;
FIG. 4 is a schematic diagram of a fault detection circuit;
FIG. 5 is a schematic diagram of a power input interface circuit;
fig. 6 is a schematic diagram of a charge and discharge switching circuit.
Detailed Description
Referring to fig. 1 to 6, a power management circuit of a household fire alarm controller, which includes a main control board, a CPU unit is disposed on the main control board, a DC24V input interface is disposed on the main control board, and a DC24C input interface is connected to a power board, and is characterized in that a battery management circuit, a fault detection circuit, a charging and discharging switch circuit, and a power input interface circuit are disposed on the power board, where the power input interface includes a lithium battery interface J5 and a main power interface J3, the battery management circuit includes a power chip U1, a 20 pin and a 21 pin of the power chip U1 are connected to one end of a capacitor C204, one end of a resistor R1, and the main power interface J3, the other end of the resistor R1 is connected to one end of a capacitor C203, the other end of the capacitor C204 is grounded, a 9 pin of the power chip U1 is connected to one end of a capacitor C108, one end of a capacitor C202, one end of a resistor R2, and a lithium battery interface J5, One end of a capacitor C201, one end of an inductor L5, the other end of a resistor R2, the other end of an inductor L5 is connected with a pin 13, a pin 14 and a pin 15 of a power supply chip U1, the other end of a capacitor C108, the other end of a capacitor C109, the other end of the capacitor C201 and the other end of a capacitor C202 are grounded, a pin 3 of the power supply chip U1 is connected with one end of a resistor R11, one end of a resistor R12 and one end of a capacitor C501, the other end of the capacitor C501 is grounded, a pin 16 and a pin 17 of the power supply chip U1 are connected with one end of a capacitor C205, one end of a capacitor C206 and the anode of a diode D302, the cathode of the diode D302 is connected with the cathode of a diode D301, the cathode of a diode D303, one end of the capacitor C301 and one end of the capacitor C302 and outputs VCC to the CPU unit, the anode of the diode D301 is connected with a main power supply interface J3, the anode of the diode D303 is connected with a lithium battery interface J5, the 22 pin of the power chip U1 is grounded through a resistor R13, the 5 pin of the power chip U1 is grounded through a resistor R7, and the 25 pin, the 12 pin and the 7 pin of the power chip U1 are all grounded; the fault detection circuit comprises an operational amplifier U2A, wherein the inverting input end of the operational amplifier U2A is connected with a main power interface J3, the non-inverting input end of the operational amplifier U2A is connected with one end of a single resistor R103 and one end of a resistor R601, the output end of the operational amplifier U2A is connected with one end of a resistor R701 and one end of a resistor R801, the other end of the resistor R701 is connected with the base electrode of a triode Q201, the collector electrode of the triode Q201 is connected with one end of a resistor R901 and a CPU unit, the power supply end of the operational amplifier U2A, the other end of the resistor R901 and the other end of the resistor R103 are both connected with VCC, and the ground end of the operational amplifier U2A, the; the charging and discharging switching circuit comprises a triode Q103, the collector of the triode Q103 is connected with a lithium battery interface J5, the base of the triode Q103 is connected with one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R4 is connected with the CPU unit, and the other end of the resistor R5 and the emitter of the triode Q103 are all grounded.
The CPU unit judges whether the main power supply is abnormal or not through data read by the port P5, the CPU unit reads parameter information of the lithium battery through the ports P11, P12 and P13, and when the lithium battery is abnormal, the CPU unit can cut off charging and discharging of the lithium battery through the port P2.
Claims (1)
1. A power supply management circuit of a household fire alarm controller comprises a main control panel, wherein a CPU unit and a DC24V input interface are arranged on the main control panel, the DC24C input interface is connected with a power panel, and the household fire alarm controller is characterized in that a battery management circuit, a fault detection circuit, a charging and discharging switch circuit and a power supply input interface circuit are arranged on the power panel, the power supply input interface circuit comprises a lithium battery interface J5 and a main power supply interface J3, the battery management circuit comprises a power supply chip U1, 20 pins and 21 pins of the power supply chip U1 are connected with one end of a capacitor C204, one end of a resistor R1 and one end of a main power supply interface J3, the other end of a resistor R1 is connected with one end of a capacitor C203, the other end of the capacitor C203 and the other end of the capacitor C204 are grounded, a pin 9 of the power supply chip U1 is connected with one end of a capacitor C108, one end of a, the power supply chip U1's 10 feet and 11 feet link to each other and then connect electric capacity C109 one end, electric capacity C201 one end, inductance L5 one end, the resistance R2 other end, inductance L5 other end is connected 13 feet, 14 feet, 15 feet of power supply chip U1, the electric capacity C108 other end, electric capacity C109 other end, electric capacity C201 other end, electric capacity C202 other end ground connection, 3 feet connecting resistance R11 one end, resistance R12 one end, electric capacity C501 one end of power supply chip U1, electric capacity C205 one end, electric capacity C206 one end, diode D302 positive pole are connected to 16 feet and 17 feet of power supply chip U1, diode D302 negative pole is connected diode D301 negative pole, diode D303 negative pole, electric capacity C301 one end, electric capacity C302 one end and output VCC for the CPU unit, diode D301 positive pole is connected main power source interface J3, diode D303 positive pole is connected interface J5 lithium cell, the pin 2, the pin 1 and the pin 24 of the power chip U1 are respectively connected with the CPU unit, the pin 1 of the power chip U1 is also connected with the other end of the resistor R11, the pin 24 of the power chip U1 is also connected with the other end of the resistor R12, the pin 22 of the power chip U1 is grounded through a resistor R13, the pin 5 of the power chip U1 is grounded through a resistor R7, and the pin 25, the pin 12 and the pin 7 of the power chip U1 are all grounded; the fault detection circuit comprises an operational amplifier U2A, wherein the inverting input end of the operational amplifier U2A is connected with the main power interface J3, the non-inverting input end of the operational amplifier U2A is connected with one end of a resistor R103 and one end of a resistor R601, the output end of the operational amplifier U2A is connected with one end of a resistor R701 and one end of a resistor R801, the other end of the resistor R701 is connected with the base electrode of a triode Q201, the collector electrode of the triode Q201 is connected with one end of the resistor R901 and the CPU unit, the power supply end of the operational amplifier U2A, the other end of the resistor R901 and the other end of the resistor R103 are all connected with VCC, and the ground end of the operational amplifier U2A, the other end of the resistor R601, the other end; the charging and discharging switching circuit comprises a triode Q103, a collector of the triode Q103 is connected with the lithium battery interface J5, a base of the triode Q103 is connected with one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R4 is connected with the CPU unit, and the other end of the resistor R5 and an emitter of the triode Q103 are all grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921943937.7U CN210839061U (en) | 2019-11-12 | 2019-11-12 | Power supply management circuit of household fire alarm controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921943937.7U CN210839061U (en) | 2019-11-12 | 2019-11-12 | Power supply management circuit of household fire alarm controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210839061U true CN210839061U (en) | 2020-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921943937.7U Withdrawn - After Issue CN210839061U (en) | 2019-11-12 | 2019-11-12 | Power supply management circuit of household fire alarm controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210839061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739767A (en) * | 2019-11-12 | 2020-01-31 | 无锡蓝天电子股份有限公司 | Power supply management circuit of household fire alarm controllers |
-
2019
- 2019-11-12 CN CN201921943937.7U patent/CN210839061U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739767A (en) * | 2019-11-12 | 2020-01-31 | 无锡蓝天电子股份有限公司 | Power supply management circuit of household fire alarm controllers |
| CN110739767B (en) * | 2019-11-12 | 2024-05-14 | 无锡蓝天电子股份有限公司 | Power management circuit of household fire alarm controller |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200623 Effective date of abandoning: 20240514 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200623 Effective date of abandoning: 20240514 |