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Power supply control device of bar code scanning equipment

A power control device and power control technology, applied in circuit devices, battery circuit devices, emergency power supply arrangements, etc., can solve problems such as a single power supply chip, and achieve the effect of meeting output requirements

Active Publication Date: 2015-07-22
FUJIAN NEWLAND AUTO ID TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is that a single power supply chip is used in the prior art to supply power. When a certain module or component in the circuit is abnormal, it will cause damage to other components, thereby proposing a method that can detect components in the circuit state, and protects vital components from damage to the power control of the barcode scanning device

Method used

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  • Power supply control device of bar code scanning equipment
  • Power supply control device of bar code scanning equipment
  • Power supply control device of bar code scanning equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] see figure 1 As shown, it is a power control device of a barcode scanning device according to an embodiment of the present invention, including: a power input module 1, a first circuit 2, and a pre-charging circuit 3, wherein:

[0062] The power input module 1 supplies power to the first circuit 2 and the pre-charging circuit 3; the power input module adopts a DC power supply of DC 5V or other voltage values, which can be provided by a battery, or by converting the AC power to 5V or other voltage values of DC output.

[0063] The first circuit 2 further includes: a first MCU power control module 21 , an MCU module 22 , a power input detection module 23 , a second MCU power control module 24 , an image sensor power control module 25 , and a central processing unit power control module 26 .

[0064] The first MCU power control module 21 can use a low dropout regulator (LDO, low dropout regulator) to convert the input voltage of the power input module 1 into an appropriat...

Embodiment 2

[0089] Such as Figure 4 As shown, as an embodiment of the present invention, on the basis of the above-mentioned embodiment 1, the pre-charging circuit 3 further includes: a second pre-charging circuit module 35 and a second control module 36;

[0090] The second pre-charging circuit module 35 includes a second electronic switch 351 , and the second pre-charging circuit module 35 can adopt the same hardware design as the first pre-charging circuit module 31 . The second pre-charging circuit module 35 is electrically connected with the second MCU power control module 24 and the capacitor 32, and the second MCU power control module 24 is used as the input of the second pre-charging circuit module 35 power supply;

[0091] The second control module 36 controls the second pre-charging circuit module 35 to charge the capacitor 32 . The second control module 36 can adopt the same chip design as the control module 33 . The second control module 36 controls the working state of th...

Embodiment 3

[0095] see Figure 5 As shown, the power control device of a barcode scanning device as an embodiment of the present invention adopts the same components as in Embodiment 1, except that the functions performed by the control module 33 are performed by the MCU module 22, because in Embodiment 1 The MCU module 22 and the control module 33 can use the same chip, so the two can be combined into one, thereby saving chip cost. Based on the principle of saving space, the introduction and description of components such as modules and circuits in this embodiment can refer to Embodiment 1, and will not be completely repeated in this embodiment. The power control device of the barcode scanning device includes: a power input module 1, a first circuit 2, and a pre-charging circuit 3, wherein:

[0096] The power input module 1 supplies power to the first circuit 2 and the pre-charging circuit 3 . DC power supply using DC 5V or other voltage values.

[0097] The first circuit 2 further in...

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Abstract

The invention relates to a power supply control device of bar code scanning equipment. The power supply control device comprises a power supply input module, a first circuit and a pre-charging circuit. The input voltage of the power supply input module is detected, and the power supply of the other circuit modules is then turned on to guarantee that the other circuit modules are not influenced by voltage fluctuation. The pre-charging circuit charges a capacitor, the capacitor supplies power outwardly, voltage fluctuation of circuit elements powered by the capacitor is avoided, and influence on an image sensor and a central processing unit is avoided.

Description

technical field [0001] The invention relates to a device power supply control device powered by a direct current power supply. Specifically, it relates to a power control device of a barcode scanning device. Background technique [0002] Common barcode scanning devices include: handheld barcode scanning devices, fixed barcode scanning terminals and mobile data terminals. Handheld barcode scanning devices and fixed barcode scanning terminals are often used in supermarkets, home appliance stores and other places. Sales assistance and product management assistance are realized by scanning the barcode of the product itself. Common products are produced by Newland Automatic Identification Technology Co., Ltd.: HR32, FM420, etc. (see the official website for details). Mobile data terminals are often used in the field of logistics. By scanning the corresponding barcodes, logistics transportation records and inventory management can be realized. Common products include Newland A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/34
Inventor 苏孝利刘荣生邱有森张享久
Owner FUJIAN NEWLAND AUTO ID TECH CO LTD
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