CN202394066U - Power supply control module for RFID device - Google Patents
Power supply control module for RFID device Download PDFInfo
- Publication number
- CN202394066U CN202394066U CN2011205722913U CN201120572291U CN202394066U CN 202394066 U CN202394066 U CN 202394066U CN 2011205722913 U CN2011205722913 U CN 2011205722913U CN 201120572291 U CN201120572291 U CN 201120572291U CN 202394066 U CN202394066 U CN 202394066U
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Abstract
The utility model discloses a power supply control module for an RFID (radio frequency identification devices) device, comprising an overvoltage and current foldback circuit, a voltage monitoring circuit, an on-off control circuit, a boosted circuit and a filter circuit, wherein the input of the overvoltage and current foldback circuit is connected with the output of the external power supply; the output of one path of the overvoltage and current foldback circuit is connected with the on-off control circuit; the output of the other path of the overvoltage and current foldback circuit is connected with the filter circuit through the voltage monitoring circuit, the on-off control circuit and the boosted circuit successively; and the power output of the filter circuit is connected with the power port of the RFID device. The power supply control module for an RFID device has the advantages that: turning off the power supply so as to effectively protect the safety for using the RFID device when the voltage and the current are too high or too low, reducing the voltage rise time; timely monitoring the practical input voltage of the RFID device so as to improve the safety for using the device, and guaranteeing the operative stability of the RFID device by means of the filter circuit.
Description
Technical field
The utility model relates to a kind of RFID power devices energy supply control module.
Background technology
The increasing all trades and professions such as finance, traffic, safety that are applied to of RFID (RF identification) technology; The power supply circumstance complication of RFID equipment is various, very different; Yet RFID equipment to the requirement of power supply again than higher; Therefore, in use RFID equipment is often because of the problem of power supply causes fault to take place frequently, even damages.
Mainly there is following problem in existing RFID power devices power supply: (1) voltage, electric current are crossed low or too high; RFID equipment directly is communicated with power supply; When voltage, when electric current is too high or too low; Can not in time cut off power supply, all can directly influence the normal power supply of RFID equipment, can't guarantee the safe in utilization of equipment; (2) the voltage rise time is long; (3) power supply ripple is big, and RFID equipment directly is communicated with power supply, and filter function is not set, and power supply ripple is big, coupled interference is strong; (4) do not have the voltage real time monitoring function, can not monitor the actual input voltage on the RFID equipment in real time, therefore be not easy to adjust the voltage of power supply.
The utility model content
The purpose of the utility model is to solve the deficiency that has now based on the externally fed power supply of RFID equipment; A kind of novel RFID power devices energy supply control module is provided; Overcome traditional RFID equipment and directly be communicated with,, can not in time cut off power supply when voltage, when electric current is too high or too low with power supply; The capital directly influences the normal power supply of RFID equipment, can't guarantee the safe in utilization of equipment; Filter function is not set, and power supply ripple is big, coupled interference is strong; Can not monitor shortcomings such as actual input voltage and voltage rising required time on the RFID equipment be long in real time.
The purpose of the utility model realizes through following technical scheme: RFID power devices energy supply control module; Be arranged between external power source and the RFID equipment; It comprises over-voltage over-current protection circuit, electric voltage observation circuit, ON-OFF control circuit, booster circuit and filtering circuit; The input of over-voltage over-current protection circuit is connected with the output of external power source, and one tunnel output of over-voltage over-current protection circuit is connected with ON-OFF control circuit, and another road output of over-voltage over-current protection circuit is connected with electric voltage observation circuit; The control output of electric voltage observation circuit is connected with ON-OFF control circuit; The output of ON-OFF control circuit is connected with booster circuit, and the output of booster circuit is connected with filtering circuit, and the power supply output of filtering circuit is connected with the power port of RFID equipment.
The beneficial effect of the utility model is:
1) is provided with over-voltage over-current protection circuit,, in time cuts off power supply, effectively protected the safe in utilization of RFID equipment at voltage, when electric current is too high or too low;
2) be provided with booster circuit, supply voltage is boosted, make its power demands that satisfies equipment, and shortened the voltage rise time;
3) electric voltage observation circuit is monitored the actual input voltage on the RFID equipment in real time, has improved the safety in utilization of equipment;
4) be provided with filtering circuit, guaranteed the stability of RFID equipment work.
Description of drawings
Fig. 1 is the utility model structural representation block diagram.
Embodiment
The technical scheme of the utility model is described in further detail: as shown in Figure 1 below in conjunction with accompanying drawing; RFID power devices energy supply control module; Be arranged between external power source and the RFID equipment, it comprises over-voltage over-current protection circuit, electric voltage observation circuit, ON-OFF control circuit, booster circuit and filtering circuit, and the input of over-voltage over-current protection circuit is connected with the output of external power source; One tunnel output of over-voltage over-current protection circuit is connected with ON-OFF control circuit; Another road output of over-voltage over-current protection circuit is connected with electric voltage observation circuit, and the control output of electric voltage observation circuit is connected with ON-OFF control circuit, and the output of ON-OFF control circuit is connected with booster circuit; The output of booster circuit is connected with filtering circuit, and the power supply output of filtering circuit is connected with the power port of RFID equipment.
Wherein, over-voltage over-current protection circuit externally power supply overtension or electric current occur when excessive, can in time cut off power supply, guarantees the safety of RFID equipment; The supply voltage of electric voltage observation circuit monitoring external power source is when voltage satisfies certain area requirement, through the ON-OFF control circuit energized; ON-OFF control circuit breaks off or the connection power devices according to the output signal of electric voltage observation circuit; Booster circuit boosts to external voltage when externally the supply voltage of power supply is low, satisfies the power demands of equipment; Filtering circuit carries out filtering to power supply, guarantees the equipment steady operation.
Claims (1)
1.RFID power devices energy supply control module; Be arranged between external power source and the RFID equipment; It is characterized in that: it comprises over-voltage over-current protection circuit, electric voltage observation circuit, ON-OFF control circuit, booster circuit and filtering circuit; The input of over-voltage over-current protection circuit is connected with the output of external power source, and one tunnel output of over-voltage over-current protection circuit is connected with ON-OFF control circuit, and another road output of over-voltage over-current protection circuit is connected with electric voltage observation circuit; The control output of electric voltage observation circuit is connected with ON-OFF control circuit; The output of ON-OFF control circuit is connected with booster circuit, and the output of booster circuit is connected with filtering circuit, and the power supply output of filtering circuit is connected with the power port of RFID equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205722913U CN202394066U (en) | 2011-12-31 | 2011-12-31 | Power supply control module for RFID device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205722913U CN202394066U (en) | 2011-12-31 | 2011-12-31 | Power supply control module for RFID device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202394066U true CN202394066U (en) | 2012-08-22 |
Family
ID=46668978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205722913U Expired - Lifetime CN202394066U (en) | 2011-12-31 | 2011-12-31 | Power supply control module for RFID device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202394066U (en) |
-
2011
- 2011-12-31 CN CN2011205722913U patent/CN202394066U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |