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Power supply selection module for sight and solar sight with same

A power supply selection and light source module technology, applied in the field of solar sights, can solve the problems of battery power consumption, processing chip consumption control power consumption, and inability to effectively prolong battery life and battery life, so as to save power and prolong life and the effect of battery life

Pending Publication Date: 2020-02-04
ZHUHAI MEFO OPTICAL INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sight disclosed in this patent needs to consume battery power during the process of automatically selecting the power supply, that is, the processing chip needs to collect the power parameters of the two power sources, compare these parameters, and then output control signals to select the power supply. The processing chip needs to consume a certain amount of control power consumption
Therefore, the technical solution disclosed in this patent cannot effectively prolong the service life and battery life of the battery.

Method used

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  • Power supply selection module for sight and solar sight with same
  • Power supply selection module for sight and solar sight with same
  • Power supply selection module for sight and solar sight with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: as figure 1 As shown, the first voltage-controlled switch 14 and the second voltage-controlled switch 15 in the power selection module 1 are respectively the first PMOS transistor 16 and the second PMOS transistor 17, and the first power input terminal 11 and the second The two power supply input terminals 12 are respectively connected to the input terminal of the first PMOS transistor 16 and the input terminal of the second PMOS transistor 17, and the output terminal of the first PMOS transistor 16 is connected to the output of the second PMOS transistor 17. terminal is connected to the power output terminal 13, the control terminal of the first PMOS transistor 16 is connected to the second power input terminal 12, and the control terminal of the second PMOS transistor 17 is connected to the first power input terminal 11 connect. It should be noted that both the first PMOS transistor 16 and the second PMOS transistor are P-channel field effect transistor...

Embodiment 2

[0042] Embodiment 2: as figure 2 As shown, the difference from Embodiment 1 is that both the first PMOS transistor 16 and the second PMOS transistor 17 have parasitic diodes, and the first power input terminal 11 and the second power input terminal 12 are connected to the first PMOS transistor 16 respectively. The drain is connected to the drain of the second PMOS transistor 17 , and the source of the first PMOS transistor 16 and the source of the second PMOS transistor 17 are connected to the power output terminal 13 in parallel. Same as Embodiment 1, the gate of the first PMOS transistor 16 is connected to the second power input terminal 12 , and the gate of the second PMOS transistor 17 is connected to the first power input terminal 11 . from figure 2 It can be known from the connection method shown that the Ugs of the first PMOS transistor 16 refers to the potential difference between the second power input terminal 12 and the power output terminal 13, and the Ugs of th...

Embodiment 3

[0043] Embodiment 3: as image 3As shown, the difference from Embodiment 1 is that the first PMOS transistor 16 is replaced by a first one-way diode 18, and the first power supply input terminal 11 is placed at the anode of the first one-way diode 18, so The cathode of the first unidirectional diode 18 is connected to the output terminal 13 of the power supply. When the potential of the first power input terminal 11 is lower than the potential of the second power input terminal 12, the second PMOS transistor 17 is turned on, and at this time the first unidirectional diode 18 is in a reverse biased state, and the current can only pass through the second PMOS. The tube 17 flows to the power output terminal 13; when the potential of the first power input terminal 11 is greater than the potential of the second power input terminal 12, the second PMOS tube 17 is cut off, and at this time the first unidirectional diode 18 is in a forward biased state, Current can only flow to the p...

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Abstract

The present invention provides a solar sight, which comprises a solar cell, a second battery, a light source module and a power supply selection module. The power supply selection module comprises a first voltage-controlled switch and a second voltage-controlled switch. The first voltage-controlled switch or the second voltage-controlled switch is automatically turned on or off according to the voltages of the solar cell and the second battery so as to provide a higher voltage for the light source module, namely when the voltage of the solar cell is greater than or equal to the voltage of thesecond battery, the light source module is powered by the solar cell, otherwise the light source module is powered by the second battery. In addition, the light source module comprises a mechanical shifting rotary adjustment switch. By turning the rotary adjustment switch, stations with different gears can be respectively connected with a light emitting part to adjust the brightness of the light source without a chip for controlling the gear adjustment. Therefore, through the above solution, additional chip power consumption can be avoided; the service life and endurance time of the second battery are effectively extended; the circuit is simplified; and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sighting devices, in particular to a power supply selection module for a sighting device and a solar sighting device having the same. Background technique [0002] In order to prolong the service life and battery life of the sight, the conventional practice is to use the two power sources of solar energy and battery to supplement each other to provide power for the sight. A solar inner red dot sight includes a rechargeable battery, a brightness adjustment switch, a circuit board, a solar battery and a supercapacitor, wherein the circuit board includes a processing chip MCU, an inner red dot control circuit, a voltage stabilizing circuit and a power switching circuit. After the red dot sight detects the power of the rechargeable battery and solar energy, the processing chip MCU compares the power of the two power sources, and then the processing chip MCU selects the power supply with the highest power. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06G02B23/00
CPCG02B23/00H02J9/06H02J9/061Y02B10/70
Inventor 杨辉何银权
Owner ZHUHAI MEFO OPTICAL INSTR CO LTD
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