CN204046260U - A kind of power control unit of fire alarm control unit - Google Patents
A kind of power control unit of fire alarm control unit Download PDFInfo
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- CN204046260U CN204046260U CN201420396415.0U CN201420396415U CN204046260U CN 204046260 U CN204046260 U CN 204046260U CN 201420396415 U CN201420396415 U CN 201420396415U CN 204046260 U CN204046260 U CN 204046260U
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Abstract
A power control unit for fire alarm control unit, has main power supply, as the storage battery of standby power supply and the switch between alternating current and standby battery unit; Also comprise: power-supply controller of electric, internal resistance detection unit and temperature compensation unit; Described internal resistance detection unit is connected with described storage battery respectively with described temperature compensation unit; Described power-supply controller of electric is connected with described internal resistance detection unit and temperature compensation unit respectively; The often end of two inputs of described the switch between alternating current and standby battery unit connects described main power supply and storage battery respectively, and described the switch between alternating current and standby battery unit also has the output connecting the alert controller of report fire.The utility model has internal resistance detection function and the temperature compensation function of storage battery, substantially increases the security performance of equipment, and ensure that the normal work of equipment.
Description
Technical field
The present invention relates to electronic technology field, especially relate to a kind of power control unit of fire alarm control unit.
Background technology
Current Fire Autoalarm Energy control adopts the mode of multichannel transformer isolation, generally only has the switch between alternating current and standby battery, state-detection and battery charging function for meeting Standard.Do not possess the temperature compensation function that the internal resistance of cell detects and reserve battery charges, like this when reality uses due to the internal resistance of cell can not be detected in time, when when the main electric power-off of Fire Autoalarm, simultaneously reserve battery internal resistance are excessive, if when there is fire alarm, standby electric cisco unity malfunction, thus cause the loss of personnel's property.
Summary of the invention
An object of the present invention is to provide a kind of power control unit of fire alarm control unit, to solve the existing internal resistance that cannot detect reserve battery, the problem that coefficient of safety is low.
In some illustrative embodiment, the power control unit of described fire alarm control unit, has main power supply, as the storage battery of standby power supply and the switch between alternating current and standby battery unit; Power-supply controller of electric, internal resistance detection unit and temperature compensation unit; Described internal resistance detection unit is connected with described storage battery respectively with described temperature compensation unit; Described power-supply controller of electric is connected with described internal resistance detection unit and temperature compensation unit respectively; The often end of two inputs of described the switch between alternating current and standby battery unit connects described main power supply and storage battery respectively, and described the switch between alternating current and standby battery unit also has the output connecting the alert controller of report fire.
Compared with prior art, illustrative embodiment of the present invention comprises following advantage:
There is internal resistance detection function and the temperature compensation function of storage battery, substantially increase the security performance of equipment, and ensure that the normal work of equipment.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the circuit diagram according to illustrative embodiment of the present invention.
Embodiment
In the following detailed description, a large amount of specific detail is proposed, so that provide thorough understanding of the present invention.But, person of skill in the art will appreciate that, also can implement the present invention even without these specific detail.In other cases, do not describe well-known method, process, assembly and circuit in detail, in order to avoid affect the understanding of the present invention.
The structural representation according to the power control unit in some illustrative embodiment is shown referring now to Fig. 1, Fig. 1.
As shown in Figure 1, in some illustrative embodiment, disclose a kind of power control unit of fire alarm control unit, comprising: main power supply 101, as the storage battery 102 of standby power supply and the switch between alternating current and standby battery unit 103; Also comprise: power-supply controller of electric 104, internal resistance detection unit 105 and temperature compensation unit 106; Described internal resistance detection unit is connected with described storage battery respectively with described temperature compensation unit; Described power-supply controller of electric is connected with described internal resistance detection unit and temperature compensation unit respectively; The often end of two inputs of described the switch between alternating current and standby battery unit connects described main power supply and storage battery respectively, and described the switch between alternating current and standby battery unit also has the output connecting the alert controller of report fire.
Wherein, main power supply is the AC power of 220V.
The present embodiment has internal resistance detection function and the temperature compensation function of storage battery, substantially increases the security performance of equipment, and ensure that the normal work of equipment.
In some illustrative embodiment, described internal resistance detection unit is made up of sampling resistor, voltage detector and signal operation amplifier; Described sampling resistor is connected with described storage battery; The input of described voltage detector is connected with described sampling resistor; The output of described voltage detector is connected with described power-supply controller of electric by described signal operation amplifier.
Wherein, preferably, form by detecting transfer relay and sampling resistor and signal operation amplifier LM2094 in internal resistance detection unit, first detection transfer relay is connected when detecting internal resistance, reserve battery sampling resistor carries out pulsed discharge, gather voltage before and after sampling resistor electric discharge, calculate the internal resistance of cell.
In some illustrative embodiment, also comprise: standby electric charhing unit 109, is connected with described storage battery and described main power supply respectively; Wherein, described standby electric charhing unit is made up of the field effect transistor of connecting and power inductance; The gate terminal of described field effect transistor is connected with described power-supply controller of electric.
In some illustrative embodiment, what be also in series with in rectifier diode, transformer and AC/DC changeover switch in described standby electric charhing unit is one or more.
Wherein, transformer is step-down transformer; AC/DC changeover switch is exchange the transducer turning direct current.
Wherein, standby electric charging circuit is the charging circuit being made up of adjustable output the power inductance of field effect transistor IRF9530,47uH and diode SS54, and the grid of field effect transistor IRF9530 is connected with the output of microcontroller Programmable pulse width.
In some illustrative embodiment, also comprise: current detecting unit 107, the often end of two input is connected with described main power supply and storage battery respectively; Its output is connected with described power-supply controller of electric.
In some illustrative embodiment, described current detecting unit adopts model to be PCA1710 high side current detection chip.Wherein, PCA1710 input voltage the highest support 40V, sampling precision 11, is connected with microcontroller by I2C interface.State-output circuit comprises main electro-detection and standby electro-detection, and main electro-detection is detected by optocoupler to export, and standby electro-detection is that cell voltage is inputted microcontroller after electric resistance partial pressure, by microcontroller sample with by microcontroller by State-output.
In some illustrative embodiment, also comprise: for feeding back the State-output unit 108 of the using state of main power supply and storage battery, described State-output unit is connected with described power-supply controller of electric.
In some illustrative embodiment, described temperature compensation unit adopts model to be the digital temperature sensor of DS12B20.
Wherein, temperature sensor DS12B20 precision is 1 degree, to be connected and to gather battery temperature, compensate according to battery temperature to battery charging voltage by monobus with microcontroller.
In some illustrative embodiment, described the switch between alternating current and standby battery unit is made up of relay and NPN type triode.
Wherein, relay can adopt commercially available single-pole double-throw relay, and relay carries out break-make control by triode 8050, and the base stage of triode 8050 is connected with power-supply controller of electric.Such power-supply controller of electric realizes the switching of main power supply by relay.
In some illustrative embodiment, described power-supply controller of electric adopts model to be the microprocessor of PIC16LF1827.
Wherein, PIC16LF1827 is 16 high-performance CPU, and inside is embedded with 4K byte high speed FLASH high-performance memory and 384 byte random asccess memory.Embedded 10 AD and PWM export.
The power control unit of fire alarm control unit of the present utility model has the switch between alternating current and standby battery, state-detection and battery charging function, also there is the temperature compensation function that the internal resistance of cell detects and reserve battery charges, the internal resistance of cell can be detected in real time so in actual use, when battery can not normally use, timely reminding user to replace battery, normally uses in order to avoid affect automatic fire alarm.Automatic fire alarm adopts storage battery as standby battery usually, storage battery requires that charging voltage is different at different temperature, otherwise battery capacity can be caused not enough, and can affect battery performance for a long time, the utility model can carry out temperature-compensating to charging voltage at different temperatures.Thus improving the reliability of system, stability, meets the requirement about power unit in EN54-4 " detection and fire alarm system power supply unit " simultaneously.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a power control unit for fire alarm control unit, has main power supply, as the storage battery of standby power supply and the switch between alternating current and standby battery unit; It is characterized in that, also comprise:
Power-supply controller of electric, internal resistance detection unit and temperature compensation unit; Described internal resistance detection unit is connected with described storage battery respectively with described temperature compensation unit; Described power-supply controller of electric is connected with described internal resistance detection unit and temperature compensation unit respectively;
The often end of two inputs of described the switch between alternating current and standby battery unit connects described main power supply and storage battery respectively, and described the switch between alternating current and standby battery unit also has the output connecting the alert controller of report fire.
2. power control unit according to claim 1, is characterized in that, described internal resistance detection unit is made up of sampling resistor, voltage detector and signal operation amplifier;
Described sampling resistor is connected with described storage battery; The input of described voltage detector is connected with described sampling resistor; The output of described voltage detector is connected with described power-supply controller of electric by described signal operation amplifier.
3. power control unit according to claim 1, is characterized in that, also comprises:
Standby electric charhing unit, is connected with described storage battery and described main power supply respectively; Wherein, described standby electric charhing unit is made up of the field effect transistor of connecting and power inductance; The gate terminal of described field effect transistor is connected with described power-supply controller of electric.
4. power control unit according to claim 3, is characterized in that, what be also in series with in rectifier diode, transformer and AC/DC changeover switch in described standby electric charhing unit is one or more.
5. power control unit according to claim 4, is characterized in that, also comprises:
Current detecting unit, the often end of two input is connected with described main power supply and storage battery respectively; Its output is connected with described power-supply controller of electric.
6. power control unit according to claim 5, is characterized in that, described current detecting unit adopts model to be PCA1710 high side current detection chip.
7. power control unit according to claim 5, is characterized in that, also comprises:
For feeding back the State-output unit of the using state of main power supply and storage battery, described State-output unit is connected with described power-supply controller of electric.
8. power control unit according to claim 1, is characterized in that, described temperature compensation unit adopts model to be the digital temperature sensor of DS12B20.
9. power control unit according to claim 1, is characterized in that, described the switch between alternating current and standby battery unit is made up of relay and NPN type triode.
10. power control unit according to claim 1, is characterized in that, described power-supply controller of electric adopts model to be the microprocessor of PIC16LF1827.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420396415.0U CN204046260U (en) | 2014-07-17 | 2014-07-17 | A kind of power control unit of fire alarm control unit |
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| CN201420396415.0U CN204046260U (en) | 2014-07-17 | 2014-07-17 | A kind of power control unit of fire alarm control unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990019A (en) * | 2021-10-12 | 2022-01-28 | 广西电网有限责任公司河池供电局 | Automatic emergency power supply switching device and method with electric fire early warning function |
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2014
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990019A (en) * | 2021-10-12 | 2022-01-28 | 广西电网有限责任公司河池供电局 | Automatic emergency power supply switching device and method with electric fire early warning function |
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Address after: 100176 floors 1-4, building 2, No.17, Rongjing East Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: Beijing Lida Huaxin Electronics Co.,Ltd. Address before: 100176 No. 17, Rongjing East Street, economic and Technological Development Zone, Daxing District, Beijing Patentee before: BEIJING LEADER HUAXIN ELECTRONIC Co.,Ltd. |