CN208135890U - A kind of safe magnetic coder - Google Patents
A kind of safe magnetic coder Download PDFInfo
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- CN208135890U CN208135890U CN201820615168.7U CN201820615168U CN208135890U CN 208135890 U CN208135890 U CN 208135890U CN 201820615168 U CN201820615168 U CN 201820615168U CN 208135890 U CN208135890 U CN 208135890U
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Abstract
This specification embodiment discloses a kind of safe magnetic coder, and the safe magnetic coder includes：Anti- cheating module, microprocessor, output module；The anti-cheating module is electrically connected with the microprocessor, and the anti-cheating module gives collected electromagnetic signal encrypted transmission to the microprocessor；The microprocessor is electrically connected with the output module, and the microprocessor will be exported after the electromagnetic signal received processing by the output module.By increasing safety chip in the anti-cheating module of safe magnetic coder, collected pulse signal is encrypted using the safety chip；So as to ensure that the pulse signal transmitted to microprocessor is not tampered；Fuel pump against payment evasion ability can be effectively improved based on the safe magnetic coder, promotes security protection effect.
Description
Technical field
This specification is related to fuel charger technical field more particularly to a kind of safe magnetic coder.
Background technique
With popularizing for motor vehicle, more and more gas stations is needed to provide oiling service for motor vehicle.Numerous oilings
The tax control stood generates therewith.
In the prior art, fuel charger acquisition volume read-out is acquired by encoder, and acquisition data are then transferred to service
Device.Specifically, in refueling process, volume read-out is acquired by Magnetic Sensor, Magnetic Sensor passes collected pulse signal
MCU is given, monitoring module or background server are transferred to after MCU is handled.But lawless people may be to pulse signal
It is adjusted, for example, adjustment pulse equivalency or change pulse signal quantity etc., steal the purpose that oil is evaded payment of duty to realize.
Based on the prior art, it is desirable to be able to prevent from altering the scheme of magnetic coder pulse signal.
Summary of the invention
This specification embodiment provides a kind of safe magnetic coder, for solving following technical problem：It is required to prevent
Alter the scheme of magnetic coder pulse signal.
In order to solve the above technical problems, what this specification embodiment was realized in：
A kind of safe magnetic coder that this specification embodiment provides, including：Anti- cheating module, microprocessor, output mould
Block；
The anti-cheating module is electrically connected with the microprocessor, and the anti-cheating module adds collected electromagnetic signal
It is close to be transferred to the microprocessor；
The microprocessor is electrically connected with the output module, and the microprocessor will be after the electromagnetic signal that received processing
It is exported by the output module.
Further, the anti-cheating module includes：Magnetic inductor, signal acquisition module and safety chip；
The magnetic inductor is electrically connected with the signal acquisition module, and the signal acquisition module mentions the magnetic inductor
The electromagnetic signal of confession carries out conversion process；
The signal acquisition module is electrically connected with the safety chip, the safety chip by collected electromagnetic signal into
Row encryption.
Further, the output module includes：Signal conditioning unit and output interface；
The signal conditioning unit is filtered electromagnetic signal, is exported by output interface.
Further, the output interface includes：Communications interface and output of pulse signal interface；Wherein,
The communications interface is used for I/O communication data；
The output of pulse signal interface is for exporting electromagnetic pulse signal.
Further, the signal acquisition module includes：AD conversion module；
The AD conversion module receives the electromagnetic signal that the magnetic inductor provides, and is AD converted to obtain digital letter
Number.
Further, the signal acquisition module further includes：DSP module；
The DSP module handles the digital signal that the AD conversion module exports, and is transferred to the safety chip.
At least one above-mentioned technical solution that this specification embodiment uses can reach following beneficial effect：
It, will be collected using the safety chip by increasing safety chip in the anti-cheating module of safe magnetic coder
Pulse signal is encrypted；So as to ensure that the pulse signal transmitted to microprocessor is not tampered；Based on the safety
Magnetic coder can effectively improve fuel pump against payment evasion ability, promote security protection effect.
Detailed description of the invention
In order to illustrate more clearly of this specification embodiment or technical solution in the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
The some embodiments recorded in this specification, for those of ordinary skill in the art, in not making the creative labor property
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of signal for the safe magnetic coder application that the scheme of this specification is related under practical application scene
Figure；
Fig. 2 is a kind of structural schematic diagram for safe magnetic coder that this specification embodiment provides；
Fig. 3 is the structural schematic diagram for the safe magnetic coder with anti-cheating module that this specification embodiment provides；
Fig. 4 is the output module structural schematic diagram that this specification embodiment provides；
Fig. 5 is the structural schematic diagram for the safe magnetic coder with signal acquisition module that this specification embodiment provides.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in this specification, below in conjunction with this explanation
Attached drawing in book embodiment is clearly and completely described the technical solution in this specification embodiment, it is clear that described
Embodiment be merely a part but not all of the embodiments of the present application.Based on this specification embodiment, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, all should belong to the application
The range of protection.
Fig. 1 is a kind of signal for the safe magnetic coder application that the scheme of this specification is related under practical application scene
Figure.For example, using the flow generated in spinner survey refueling process, further utilizing Magnetic Sensor in fuel charger
Measure the flow of spinner flowmeter.Specifically, flowmeter is collected using Magnetic Sensor export corresponding electromagnetic pulse signal,
The electromagnetic pulse signal is easy to be modified by lawless people, increases pulse or adjustment pulse equivalency；For this purpose, increasing in magnetic coder
Add safety chip, collected pulse signal encrypted using safety chip, pulse signal can be effectively prevent to be modified,
Ensure the accurate impression of fuel charger acquisition data.
It should be noted that safe magnetic coder mentioned here, can not only apply on fuel charger, can also answer
In the unit for needing to be acquired pulse signal for other.Safety chip mentioned here can be packed
For the form of chip, it is also possible to the safety device being made of safety chip and related device or chip, it is described herein
Safety chip can be understood as playing the role of the device of safe encryption, be not intended as the limitation to the application.
Based on above-mentioned scene, the scheme of this specification is described in detail below.
Fig. 2 is a kind of structural schematic diagram for safe magnetic coder that this specification embodiment provides, the safe magnetic coder
Specific structure includes：Anti- cheating module 110, microprocessor 120 and output module 130；
Wherein, the anti-cheating module 110 and the microprocessor 120 are electrically connected, and anti-cheating module 110 will be collected
Electromagnetic signal encrypted transmission gives the microprocessor 120, and electromagnetic signal mentioned here is electromagnetic pulse signal, is specifically encrypted
Method can be using asymmetric encryption etc..
The microprocessor 120 is electrically connected with the output module 130, the electromagnetism that the microprocessor 120 will receive
It is exported after signal (electromagnetic signal has already passed through encryption) processing by the output module 130；For example, can be output to
Metering module or monitoring module etc..
In one or more embodiment of this specification, it is anti-to be illustrated in figure 3 having for this specification embodiment offer
The structural schematic diagram of the safe magnetic coder for module of practising fraud.The anti-cheating module 110 includes：Magnetic inductor 111, signal acquisition
Module 112 and safety chip 113；The magnetic inductor 111 is electrically connected with the signal acquisition module 112, the signal acquisition
The electromagnetic signal that module 112 provides the magnetic inductor 111 carries out conversion process；The signal acquisition module 112 with it is described
Safety chip 113 is electrically connected, and collected electromagnetic signal is encrypted the safety chip 113.
Specifically, Magnetic Sensor 111 acquires flow based on the magnet being used on the flowmeter of detection flows in fuel charger
Pulse signal, and magnetic signal is converted into electric impulse signal, which is analog signal, needs to utilize signal acquisition module 112
It is further processed, for example, the processing such as be filtered, amplify to the pulse signal, then carrying out analog-to-digital conversion, (A/D turns
Change) etc. the subsequent processing for the digital signal, further will treated that digital signal is sent to safety chip 113 is added
Close processing；As described above it is found that the safety chip 113 can be using rivest, shamir, adelman, also, the safety chip
113 be trusted console module, is the device that can independently carry out key generation, encryption and decryption, inside possesses independent processing
Device and storage unit, can store key and characteristic, provide encryption and Security Authentication Service for anti-cheating system.With safe core
Piece is encrypted, and key is stored in hardware, and stolen data can not decrypt, to protect data safety.
In one or more embodiment of this specification, Fig. 4 show the output module of this specification embodiment offer
Structural schematic diagram.The output module 130 includes：Signal conditioning unit 131 and output interface 132；The signal conditioning unit
131 pairs of electromagnetic signals are filtered, and are exported by output interface 132.
It before output signal, needs first to improve pulse signal, eliminates interference signal, letter after treatment
It number is exported by output interface 132.
In one or more embodiment of this specification, the output interface 132 includes：Communications interface 132a and
Output of pulse signal interface 132b；Wherein, the communications interface 132a is used for I/O communication data；The pulse
Signal output interface 132b is for exporting electromagnetic pulse signal.
In practical applications, previously described metering module or monitoring module with microprocessor 120 if necessary to carry out
Communication needs to carry out communication data transfer by the communications interface 132a, and communications interface 132a can carry out double
It is transmitted to data；If necessary to transmit encrypted electromagnetic pulse signal, can be exported by the pulse output interface 132b.
It should be noted that is transmitted between Magnetic Sensor 110 and signal acquisition module 112 is electromagnetic pulse signal (example
Such as, encoder angular signal), communication data can not be transmitted.Transport packet between microprocessor 120 and output module 130
Include communication data and electromagnetic pulse signal etc..
In one or more embodiment of this specification, be illustrated in figure 5 the offer of this specification embodiment has letter
The structural schematic diagram of the safe magnetic coder of number acquisition module, the signal acquisition module 112 include：AD conversion module 112a；
The AD conversion module 112a receives the electromagnetic signal that the magnetic inductor 110 provides, and is AD converted to obtain digital signal.
It is readily appreciated that, in general, the collected signal of sensor is mostly analog signal, for the ease of carrying out logical process
And operation, need to convert the analog signal into digital signal (that is, A/D is converted).
Further, the signal acquisition module 112 further includes：DSP module 112b；The DSP module 112b will be described
The digital signal of AD conversion module 112a output is handled, and the safety chip 113 is transferred to.Utilize 112b pairs of DSP module
Obtained digital signal carries out calculation process.
In one or more embodiment of this specification, the safety chip includes：FM15160, for receiving
Digital signal encrypted.It is of course also possible to according to actual needs, the safety chip of other models is selected, in this specification
Cited safety chip 113 is the chip for being suitable for the safe magnetic coder by debugging, and those skilled in the art are easy reason
Solution needs to be selected according to practical application equipment and other support chip types in chip model selection；Also, core
Piece model influences final debugging result.
Based on the above embodiment, by increasing safety chip in the anti-cheating module of safe magnetic coder, the peace is utilized
Collected pulse signal is encrypted full chip；So as to ensure to microprocessor transmit pulse signal not by
Alter；Fuel pump against payment evasion ability can be effectively improved based on the safe magnetic coder, promotes security protection effect.
It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims
It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment
It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable
Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can
With or may be advantageous.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device,
For electronic equipment, nonvolatile computer storage media embodiment, since it is substantially similar to the method embodiment, so description
It is fairly simple, the relevent part can refer to the partial explaination of embodiments of method.
For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this
The function of each unit can be realized in the same or multiple software and or hardware when specification one or more embodiment.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
This specification can describe in the general context of computer-executable instructions executed by a computer, such as journey
Sequence module.Generally, program module include routines performing specific tasks or implementing specific abstract data types, programs, objects,
Component, data structure etc..Specification can also be practiced in a distributed computing environment, in these distributed computing environments,
By executing task by the connected remote processing devices of communication network.In a distributed computing environment, program module can
To be located in the local and remote computer storage media including storage equipment.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely this specification embodiments, are not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (6)
1. a kind of safe magnetic coder, which is characterized in that including：Anti- cheating module, microprocessor, output module；
The anti-cheating module is electrically connected with the microprocessor, and collected electromagnetic signal is encrypted and passed by the anti-cheating module
It is defeated by the microprocessor；And
The microprocessor is electrically connected with the output module, and the microprocessor will pass through after the electromagnetic signal received processing
The output module output.
2. safe magnetic coder as described in claim 1, which is characterized in that the anti-cheating module includes：Magnetic inductor, letter
Number acquisition module and safety chip；
The magnetic inductor is electrically connected with the signal acquisition module, and the signal acquisition module provides the magnetic inductor
Electromagnetic signal carries out conversion process；
The signal acquisition module is electrically connected with the safety chip, and the safety chip is added collected electromagnetic signal
Close processing.
3. safe magnetic coder as described in claim 1, which is characterized in that the output module includes：Signal conditioning unit
And output interface；
The signal conditioning unit is filtered electromagnetic signal, is exported by output interface.
4. safe magnetic coder as claimed in claim 3, which is characterized in that the output interface includes：Communications interface
With output of pulse signal interface；Wherein,
The communications interface is used for I/O communication data；
The output of pulse signal interface is for exporting electromagnetic pulse signal.
5. safe magnetic coder as claimed in claim 2, which is characterized in that the signal acquisition module includes：AD conversion mould
Block；
The AD conversion module receives the electromagnetic signal that the magnetic inductor provides, and is AD converted to obtain digital signal.
6. safe magnetic coder as claimed in claim 5, which is characterized in that the signal acquisition module further includes：DSP mould
Block；
The DSP module handles the digital signal that the AD conversion module exports, and is transferred to the safety chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820615168.7U CN208135890U (en) | 2018-04-26 | 2018-04-26 | A kind of safe magnetic coder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820615168.7U CN208135890U (en) | 2018-04-26 | 2018-04-26 | A kind of safe magnetic coder |
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| CN208135890U true CN208135890U (en) | 2018-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596194A (en) * | 2019-01-30 | 2019-04-09 | 深圳市普颂电子有限公司 | Spinner flowmeter corrects system and bearing calibration |
-
2018
- 2018-04-26 CN CN201820615168.7U patent/CN208135890U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596194A (en) * | 2019-01-30 | 2019-04-09 | 深圳市普颂电子有限公司 | Spinner flowmeter corrects system and bearing calibration |
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