CN103150532A - Capacitive sensing method and device for double-interface card reader - Google Patents
Capacitive sensing method and device for double-interface card reader Download PDFInfo
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Abstract
The invention discloses a capacitive sensing method and a device for a double-interface card reader. According to the method and the device, as long as an IC (integrated circuit) card does not exist in a preset scope of the double-interface card reader, a processor of the double-interface card reader is in a dormancy state, only when the IC card exists in the preset scope of the double-interface card reader, the processor of the double-interface card reader is in a working state, so that the working time of the processor is greatly shortened, when the IC card does not exist, the processor is always in the dormancy state, the electric quantity of the double-interface card reader can be reduced, and energy consumption is saved. The method and the device has the advantages of energy consumption reduction, energy saving and the like.
Description
Technical field
The present invention relates to the double-interface card reader field, in particular, relate to capacitive sensing method and the device of double-interface card reader.
Background technology
The IC-card that contact and contactless two types are arranged now on the market, be widely used in the fields such as bank, public transport, gate inhibition, safety, along with the development of science and technology, double-interface card reader the card reader that not only can process Contact Type Ic Card but also can process contactless IC card appearred, i.e..
Whether the processing mode of double-interface card reader is to detect to have Contact Type Ic Card to insert double-interface card reader at present, inserts if Contact Type Ic Card detected, processes Contact Type Ic Card; Simultaneously whether poll has non-contact IC to be stuck near card reader, if contactless IC card detected, processes non-contact IC card, if contactless IC card do not detected, and poll always.
In the research and practice process to prior art, the present inventor finds that there is following problem in prior art:
Because no matter near the non-contact IC card that whether exists of double-interface card reader, double-interface card reader can be in the state that detects non-contact IC card always, so cause the power consumption of double-interface card reader large, electric quantity consumption is high, thereby causes the waste of the energy.
Therefore, how to reduce the energy resource consumption of double-interface card reader, become the problem that needs most at present solution.
Summary of the invention
In view of this, purpose of design of the present invention is, a kind of capacitive sensing method and device of double-interface card reader is provided, to reduce the energy resource consumption of double-interface card reader.
The embodiment of the present invention is achieved in that
A kind of capacitive sensing method of double-interface card reader comprises:
When described double-interface card reader powers up when starting, the duty of the processor of described double-interface card reader is converted to dormant state;
Judge in the preset range of described double-interface card reader and whether have IC-card, if, the dormant state with described processor is converted to duty, and by the IC-card process chip of the described double-interface card reader of described processor control, the data in described IC-card is read; Otherwise, the duty of described processor is converted to dormant state.
Preferably, the scope of described preset range for getting by sensor.
Preferably, the scope of described preset range for getting by the capacitive sensing device.
Preferably, the scope of described preset range for getting by optical sensor.
Preferably, the scope of described preset range for getting by infrared sensor.
Preferably, when existing IC-card and described IC-card to be specially Contact Type Ic Card in the preset range of described double-interface card reader, the dormant state with described processor is converted to duty, and by the Contact Type Ic Card process chip of the described double-interface card reader of described processor control, the data in described Contact Type Ic Card is read.
Preferably, when existing IC-card and described IC-card to be specially non-contact IC card in the preset range of described double-interface card reader, the dormant state with described processor is converted to duty, and by the non-contact IC card process chip of the described double-interface card reader of described processor control, the data in described non-contact IC card is read.
A kind of double-interface card reader comprises processor, the sensor that is connected with described processor respectively and IC-card process chip;
Described sensor is for whether having IC-card in the preset range that judges described double-interface card reader;
Described processor, be used for when described double-interface card reader powers up startup the duty of described processor is converted to dormant state, and judge when having IC-card in preset range at described sensor, dormant state is converted to duty, controls described IC-card process chip the data in described IC-card are read; Judge when not having IC-card in preset range at described sensor, duty is converted to dormant state.
Preferably, when described sensor was specially touch sensor, described IC-card process chip was specially the Contact Type Ic Card process chip.
Preferably, when described sensor was specially the capacitive touch sensor, described IC-card process chip was specially the non-contact IC card process chip.
Compared with prior art, the technical scheme that provides of the present embodiment has the following advantages and characteristics:
In scheme provided by the invention, as long as when not having IC-card in the preset range of double-interface card reader, the processor of double-interface card reader just is in dormant state so, when only having IC-card in the preset range of double-interface card reader, the processor of double-interface card reader is just in running order, has reduced so greatly the working time of processor, and processor always is not in dormant state when there is no IC-card, so reduce the double-interface card reader electric quantity consumption, energy savings.Therefore, scheme provided by the invention has the advantages such as the energy consumption of reduction and energy savings.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of the capacitive sensing method of a kind of double-interface card reader provided by the present invention;
Fig. 2 is the module map of a kind of double-interface card reader provided by the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present invention provides a kind of capacitive sensing method of double-interface card reader, to reduce the energy resource consumption of double-interface card reader.Because there is various ways in the specific implementation of the capacitive sensing method of above-mentioned double-interface card reader, be elaborated below by specific embodiment:
Shown in Figure 1, shown in Figure 1 is a kind of capacitive sensing method of double-interface card reader, comprising:
Step S11, power up when starting when described double-interface card reader, the duty of the processor of described double-interface card reader is converted to dormant state;
Wherein, power up when starting at double-interface card reader, the processor of double-interface card reader is in running order under normal circumstances, but in the situation that there is no IC-card near double-interface card reader, the power consumption of processor is just fully nonsensical.So when double-interface card reader powered up startup, just the duty with processor was converted to dormant state, with saves energy.
Step S12, judge in the preset range of described double-interface card reader whether have IC-card, if enter step S13; Otherwise, enter step S14;
Wherein, this step can judge in the preset range of double-interface card reader whether have IC-card by sensor, because the power consumption of sensor is not an order of magnitude fully for the power consumption of processor, so judge by sensor and can save greatly electric energy.In addition, the type of sensor preferably adopts the capacitive sensing device, certainly, is not limited to capacitive transducer for the type of sensor, also can adopt optical sensor, infrared sensor etc.
Step S13, the dormant state of described processor is converted to duty, and by the IC-card process chip that described processor is controlled described double-interface card reader, the data in described IC-card is read;
Wherein, when having IC-card in sensor is judged the preset range of double-interface card reader, need processor to enter duty, so the dormant state of processor is converted to duty.And, also need processor to control the IC-card process chip of double-interface card reader, so that the IC-card process chip reads the data in IC-card.In addition, if IC-card is non-contact IC card, the processor non-contact IC card process chip that can control double-interface card reader reads the data in non-contact IC card so; If IC-card is Contact Type Ic Card, the processor Contact Type Ic Card process chip that can control double-interface card reader reads the data in Contact Type Ic Card so.
Step S14, the duty of described processor is converted to dormant state.
Wherein, when IC-card leaves the preset range of double-interface card reader, need so the duty of processor is converted to dormant state.
In the embodiment shown in fig. 1, as long as when not having IC-card in the preset range of double-interface card reader, the processor of double-interface card reader just is in dormant state so, when only having IC-card in the preset range of double-interface card reader, the processor of double-interface card reader is just in running order, has reduced so greatly the working time of processor, and processor always is not in dormant state when there is no IC-card, so reduce the double-interface card reader electric quantity consumption, energy savings.Therefore, scheme provided by the invention has the advantages such as the energy consumption of reduction and energy savings.
Shown in Figure 2, shown in Figure 2 is a kind of double-interface card reader, comprises processor 13, the sensor and the IC-card process chip that are connected with described processor 13 respectively; Described sensor, for whether having IC-card in the preset range that judges described double-interface card reader, wherein, sensor comprises touch sensor 11 and capacitive transducer 12; Described processor 13, be used for when described double-interface card reader powers up startup the duty of described processor 13 is converted to dormant state, and judge when having IC-card in preset range at described sensor, dormant state is converted to duty, controls described IC-card process chip the data in described IC-card are read; Judge when not having IC-card in preset range at described sensor, duty is converted to dormant state.Wherein, if IC-card is non-contact IC card, the data in 15 pairs of non-contact IC cards of non-contact IC card process chip of processor 13 meeting control double-interface card readers read so; If IC-card is Contact Type Ic Card, the data in 14 pairs of Contact Type Ic Cards of Contact Type Ic Card process chip of processor 13 meeting control double-interface card readers read so.
For Fig. 1 and the described embodiment of Fig. 2, below by concrete application scenarios, the solution of the present invention is described: suppose that double-interface card reader provided by the invention is applied on gate control system, need to swipe the card on double-interface card reader when wherein, the employee of company goes to work or comes off duty.After the keeper powered up startup with double-interface card reader, the duty of the processor of double-interface card reader will be converted to dormant state automatically so, and remains dormant state.When employee's working of company is checked card, the sensor of double-interface card reader will detect and have non-contact IC card so, at this moment, sensor will send the signal that dormant state is converted to duty to processor, then the processor state of again resuming work, the non-contact IC card process chip that processor can be controlled described double-interface card reader reads the data in described non-contact IC card, reads and completes, and illustrates that this employee checks card successfully.When the employee left the preset range of double-interface card reader with non-contact IC card, processor returned to dormant state automatically from duty again.As everyone knows, processor is under being in dormant state the time, its power consumption is very low, so processor is only just in running order in needs, and from the daylong time, the time of checking card all concentrates on the working in morning and come off duty evening, so except two periods of checking card, processor all is in dormant state, and therefore scheme provided by the invention has significantly reduced the energy consumption of processor, thereby has saved electric power energy.
In sum, scheme provided by the invention is mainly to increase the capacitive sensing components and parts on double-interface card reader, when object is arranged near capacitive sensing, can trigger capacitive sensing, utilizes this characteristic, and whether detect has contactless IC card near card reader.If there is contactless IC card close, capacitive sensing triggers double-interface card reader and processes contactless IC card, when not having contactless IC card close, no longer carries out poll work.If also do not have this moment Contact Type Ic Card to insert, double-interface card reader enters dormant state, thereby reaches the purpose of effective energy savings.In addition, the output signal of inductor and the contact card signal that puts in place is received respectively the different interrupt pin of main control chip, when having non-contact IC card to come close to or in contact with formula IC-card insertion double-interface card reader, can trigger primary controller interrupts, thereby primary controller is waken up from dormant state, and primary controller enters duty.Primary controller is processed respectively according to different interrupt types, if capacitive sensing interrupts, enters the contactless card processing module, processes non-contact IC card; Interrupt if Contact Type Ic Card inserts, enter the contact card processing module, process Contact Type Ic Card.
Need to prove, Fig. 1 is the preferred embodiment that the present invention introduces to embodiment shown in Figure 2, and those skilled in the art can design more embodiment on this basis fully, does not therefore give unnecessary details herein.
Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, realization in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. the capacitive sensing method of a double-interface card reader, is characterized in that, comprising:
When described double-interface card reader powers up when starting, the duty of the processor of described double-interface card reader is converted to dormant state;
Judge in the preset range of described double-interface card reader and whether have IC-card, if, the dormant state with described processor is converted to duty, and by the IC-card process chip of the described double-interface card reader of described processor control, the data in described IC-card is read; Otherwise, the duty of described processor is converted to dormant state.
2. the capacitive sensing method of double-interface card reader according to claim 1, is characterized in that, the scope of described preset range for getting by sensor.
3. the capacitive sensing method of double-interface card reader according to claim 1, is characterized in that, the scope of described preset range for getting by the capacitive sensing device.
4. the capacitive sensing method of double-interface card reader according to claim 1, is characterized in that, the scope of described preset range for getting by optical sensor.
5. the capacitive sensing method of double-interface card reader according to claim 1, is characterized in that, the scope of described preset range for getting by infrared sensor.
6. the capacitive sensing method of double-interface card reader according to claim 1, it is characterized in that, when existing IC-card and described IC-card to be specially Contact Type Ic Card in the preset range of described double-interface card reader, the dormant state with described processor is converted to duty, and by the Contact Type Ic Card process chip of the described double-interface card reader of described processor control, the data in described Contact Type Ic Card is read.
7. the capacitive sensing method of double-interface card reader according to claim 1, it is characterized in that, when existing IC-card and described IC-card to be specially non-contact IC card in the preset range of described double-interface card reader, the dormant state with described processor is converted to duty, and by the non-contact IC card process chip of the described double-interface card reader of described processor control, the data in described non-contact IC card is read.
8. a double-interface card reader, is characterized in that, comprises processor, the sensor that is connected with described processor respectively and IC-card process chip;
Described sensor is for whether having IC-card in the preset range that judges described double-interface card reader;
Described processor, be used for when described double-interface card reader powers up startup the duty of described processor is converted to dormant state, and judge when having IC-card in preset range at described sensor, dormant state is converted to duty, controls described IC-card process chip the data in described IC-card are read; Judge when not having IC-card in preset range at described sensor, duty is converted to dormant state.
9. double-interface card reader according to claim 8, is characterized in that, when described sensor was specially touch sensor, described IC-card process chip was specially the Contact Type Ic Card process chip.
10. double-interface card reader according to claim 8, is characterized in that, when described sensor was specially the capacitive touch sensor, described IC-card process chip was specially the non-contact IC card process chip.
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| CN2013101062903A CN103150532A (en) | 2013-03-28 | 2013-03-28 | Capacitive sensing method and device for double-interface card reader |
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| CN2013101062903A CN103150532A (en) | 2013-03-28 | 2013-03-28 | Capacitive sensing method and device for double-interface card reader |
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Cited By (2)
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| CN110765796A (en) * | 2019-10-10 | 2020-02-07 | 武汉普利商用机器有限公司 | IC card induction circuit and device |
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Application publication date: 20130612 |