CN204007847U - A kind of anti-cheated electronic weighing scale - Google Patents
A kind of anti-cheated electronic weighing scale Download PDFInfo
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- CN204007847U CN204007847U CN201420283992.9U CN201420283992U CN204007847U CN 204007847 U CN204007847 U CN 204007847U CN 201420283992 U CN201420283992 U CN 201420283992U CN 204007847 U CN204007847 U CN 204007847U
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- 238000005303 weighing Methods 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007257 malfunction Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
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Abstract
The utility model relates to weight metering technical field, particularly relate to a kind of anti-cheated electronic weighing scale, comprise housing, base, be located at PCB substrate on described base, be located at the electronic scale chip on PCB substrate, also comprise trigger switch and trigger part, trigger switch is arranged on described PCB substrate and is electrically connected at electronic scale chip, be installed at housing under the state of described base, described trigger switch can not trigger, described triggering part is arranged between described housing and trigger switch, triggers part and can trigger described trigger switch with taking apart of described housing.A kind of anti-cheated electronic weighing scale of the present utility model can allow the electronic weigher casing be the moment of taking apart to give electronic scale chip a trigger pip by people, being convenient to designer utilizes this trigger pip to allow electronic scale chip automatically revise inner working routine, make electronic scales cisco unity malfunction or in working routine, leave the vestige being tampered, prevent that lawless people from distorting electronic scales, guarantee sincerity, the justice of market trade environment.
Description
Technical field
The utility model relates to weight metering technical field, particularly relates to a kind of anti-cheated electronic weighing scale.
Background technology
Along with the use of electronic scales is universal, some illegal technician and businessman, for individual interest, personation, repacking electronic scales become the electronic scales that can practise fraud.Upset whole market order.Quality supervision department has proposed technical requirement to electronic scales producer.Check on technically, identify, prevent electronic scales cheating, counterfeiting.At present, common cheat method be mainly following some:
One, the amplification coefficient that changes prime operational amplifier, as shown in Figure 1, toggle switch SW, just receives in different resistance.Figure changes varying signal amplifier amplification quantity; Fig. 2 changes sensor signal amount; All reach and change weight indicating value object.
Two, switch SW above can also replace with remote control module, becomes distance type.This way, must take scale body apart, installs cheating annex additional.As long as just can find with original-pack scale contrast.Some can utilize the place that people are not too careful that cheating annex is stashed.Such as: 1, ensconce wiring board after; 2, battery is emptied and is arranged on the inside; 3, be contained in terminal box etc.But as long as carefully contrast master circuit; Whether whether hollow sensation, extension line be many to knock battery; Sensor cable stage casing whether connects not clear device.Just can find.
These two kinds of methods are used many years ago, rare in recent years.
Three, software coordinates with hardware.As Fig. 3, change the chip (MCU) of primary electron scale, teleswitch to be received on the I/O mouth of chip (MCU), the varying level state of switch is reflected on the I/O mouth of MCU, and matching program changes operational parameter, changes weight indicating value.Tear open after machine, with original-assemblied machine comparison, can see and have more some elements, can be penetrated.
Four, pure software cheating.Change the chip (MCU) of primary electron scale.By compared with complex operations method, call different operational parameters and change weight indicating value.By shirtsleeve operation, recovery normal operation parameter, make scale recover normal.
For example, after internal processes by change electronic scale chip, press the function key of electronic scales, input password, such as 12.345, electronic scales enters cheating state, then presses " M1 " key of electronic scales, and weight indicating value is original 110%, or press " M2 " key, weight indicating value is original 120% etc., presses " M6 " key and exits cheating function, and it is normal that electronic scales recovers.The method of operating of this type of cheating varies, and crypticity is extremely strong.
Five, electromagnetic interference (EMI).For the electronic scales of type in certain, use certain frequency range high reject signal generator, undesired signal is added in sensor signal to change semaphore, reaches and changes weight indicating value object.But be difficult to control the amount of disturbing, and make indicated value instability, easily under a cloud, discovery.
Six, some little tricks.Make electronic scales tilt; Haul the scale pan frame application of force with " stealth " thread; One platform balance enters, a platform balance goes out; Destroy sealing, again demarcate electronic scales etc.
Utility model content
In view of this, the utility model discloses a kind of anti-cheated electronic weighing scale, object is that the moment that can allow electronic weigher casing be separated produces trigger pip to electronic scale chip, being convenient to designer utilizes this trigger pip to allow electronic scale chip automatically revise inner working routine, make electronic scales cisco unity malfunction or in working routine, leave the vestige being tampered, prevent that lawless people from distorting electronic scales, guarantee sincerity, the justice of market trade environment.
The technical solution adopted in the utility model is: a kind of anti-cheated electronic weighing scale, comprise housing, base, be located at PCB substrate on described base, be located at the electronic scale chip on PCB substrate, also comprise trigger switch and trigger part, described trigger switch is arranged on described PCB substrate and is electrically connected at described electronic scale chip, be installed at housing under the state of described base, described trigger switch can not trigger, described triggering part is arranged between described housing and trigger switch, triggers part and can trigger described trigger switch with separating of described housing.It should be noted that, described trigger switch is the conventional trigger switch of prior art, and its inside is generally provided with spring contact, just can allow trigger switch in circuit, produce trigger pip by the action of controlling spring contact.Be arranged under the state on base at housing, because described trigger switch can not trigger, be that contact does not produce trigger action, trigger switch just can not produce trigger pip to described electronic scale chip, in the time that the housing of electronic scales is taken apart artificially, described triggering part between housing and trigger switch will be separated This move as induction taking housing, and then impels the contact of described trigger switch to produce trigger action, makes trigger switch give electronic scale chip a trigger pip.In actual applications, technician can write one section in advance from rewriting program in electronic scale chip, describedly can hard to bear described trigger switch trigger from rewriting program, be that electronic scale chip receives after the trigger pip from trigger switch, just start described from rewriting program, the described Work machine code that can rewrite described electronic scale chip after rewriting program starts, the work of can not weighing normally again of electronic scale chip after Work machine code is modified, stop timely and effectively lawless people to continue to utilize the electronic scales of split mistake to carry out cheating, or Work machine code can not form impact to the work of weighing of electronic scales after being modified, but allow the machine code in electronic scale chip do variation or local variation a little, leave the vestige being tampered, in the time that reviewer recalls the Work machine code of electronic scale chip by reading code equipment, just can find that variation has occurred the Work machine code being transferred out, therefore can judge that electronic scales is maliciously tampered, this mode can allow lawbreaker in involuntary situation, leave the clue of crime, be conducive to law enfrocement official taking this clue as foundation, arrest on evidence lawbreaker, stop illegal cheating, the fair sincerity of Maintenance Market trade.
Therefore, a kind of anti-cheated electronic weighing scale of the present utility model can allow the electronic weigher casing be the moment of separating electronic scale chip to be produced to trigger pip by people, being convenient to designer utilizes this trigger pip to allow electronic scale chip automatically revise inner working routine, make electronic scales cisco unity malfunction or in working routine, leave the vestige being tampered, prevent that lawless people from distorting electronic scales, guarantee sincerity, the justice of market trade environment.
Preferably, described trigger switch is provided with normally closed interlock, and described housing is by pressing described triggering part and tightly push away and disconnecting described normally closed interlock.Under the pressing of housing, trigger part and just can the while tightly push away described normally closed interlock, be subjected to displacement after causing elasticity normally closed interlock pressurized, transfer normally open to from normally off, therefore normally closed interlock is disconnected; When the housing of electronic scales by people for taking apart, housing disappears to the acting force that triggers part, causes to trigger part the acting force of described normally closed interlock is disappeared, therefore normally closed interlock automatically resets, and then comes back to normally off, and produces trigger pip.
Alternatively, described trigger switch is elastic component.Need to press described elasticity normally closed interlock owing to triggering part, if it is long or excessive to trigger the size of part, will directly increase the pressure to contact, thereby damage contact, therefore, described triggering part is that elastic component can allow and triggers the pressure energy flexible adjustment between part and elasticity normally closed interlock, makes trigger switch be not easy damage.
Preferably, described trigger switch is provided with normally open contact, and described triggering part is connection strap, and the two ends of described connection strap connect respectively described housing and described normally open contact.Because described trigger switch is provided with normally open contact, the trigger switch under normally open can not produce trigger pip to electronic scale chip.Be arranged under the state on base at described housing, the two ends of described connection strap connect respectively described housing and described normally open contact, when the housing of electronic scales by people for taking apart, housing can pull described normally open contact by described connection strap, make normally open contact moment closure, so that described trigger switch produces trigger pip.
Preferably, described electronic scale chip is encapsulated on described PCB substrate in the lump with the peripheral cell being located on PCB substrate, after preventing that electronic scale chip and various peripheral electron element from being split out easily, allow cribber plagiarize the circuit of chip program and PCB substrate, increased the difficulty of flight.
Preferably, on described PCB substrate, be coated with radome, can effectively prevent that interference unit from practising fraud from electronic scales outside.
A kind of anti-cheated electronic weighing scale of the present utility model can allow the electronic weigher casing be the moment of taking apart to give electronic scale chip a trigger pip by people, being convenient to designer utilizes this trigger pip to allow electronic scale chip automatically revise inner working routine, make electronic scales cisco unity malfunction or in working routine, leave the vestige being tampered, prevent that lawless people from distorting electronic scales, guarantee sincerity, the justice of market trade environment.
Brief description of the drawings
Fig. 1 is the cheating control schematic diagram of prior art.
Fig. 2 is the cheating control schematic diagram of prior art.
Fig. 3 is the cheating control schematic diagram of prior art.
Fig. 4 is the one-piece construction schematic diagram of the utility model embodiment mono-.
Fig. 5 is the structure diagram of the utility model embodiment mono-electronic weigher casing while not being opened.
Fig. 6 is the structure diagram of the utility model embodiment mono-electronic weigher casing while being opened.
Fig. 7 is the structure diagrams of the utility model embodiment bis-electronic weigher casings while not being opened.
Fig. 8 is the structure diagrams of the utility model embodiment bis-electronic weigher casings while being opened.
Embodiment
Below in conjunction with embodiment, the utility model is further described.Wherein, accompanying drawing is only for exemplary illustration, expression be only schematic diagram, but not pictorial diagram can not be interpreted as the restriction to this patent; For embodiment of the present utility model is described better, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; For a person skilled in the art, in accompanying drawing some known features and explanation thereof may to omit be understandable.
Embodiment mono-: as shown in Figure 4, a kind of anti-cheated electronic weighing scale, comprise housing 1, base 11, be fixedly connected on the PCB substrate 12 on described base 11, on PCB substrate 12, be provided with electronic scale chip 4, electronic scale chip 4 is deposited the Work machine code of electronic scales, in the time that electronic scales is normally worked, described electronic scale chip 4 can read described Work machine code, thereby electronic scales can be weighed and the work such as accounting price normally, in addition, on electronic scale chip 4, also enroll machine code and rewritten module, machine code is rewritten in module and has been comprised one section from rewriting program, when machine code is rewritten the Work machine code that can rewrite described electronic scale chip 4 after module starts, and then cause electronic scale chip 4 normally not work again.In addition, also comprise trigger switch 3 and trigger part, trigger switch 3 is electrically connected on described PCB substrate 12 and can triggers and starts described machine code rewriting module, and in the present embodiment, described triggering part is elastic component 2.Shown in Fig. 5 ~ 6, in the present embodiment, in trigger switch 3, be provided with normally closed interlock 31, normally closed interlock 31 is by spring 32 jack-up, and elastic component 2 upper ends are pressed by housing 1, and lower end tightly pushes away normally closed interlock 31, make the backward lower generation displacement of normally closed interlock 31 pressurized, transfer off-state to from normally off.When the housing 1 of electronic scales by people for taking apart, housing 1 disappears to the acting force of elastic component 2, cause elastic component 2 to disappear to the acting force of normally closed interlock 31, normally closed interlock 31 is subject to the thrust of spring 32 and automatically resets, and then come back to normally off, and electronic scale chip 4 is produced to trigger pip, make described machine code rewrite module and trigger startup, machine code is rewritten after module starts just can rewrite the Work machine code in electronic scale chip 4 automatically, the work of can not weighing normally again of electronic scale chip 4 after Work machine code is modified, stop timely and effectively lawless people to continue to utilize the electronic scales of split mistake to carry out cheating.Or Work machine code can not form impact to the work of weighing of electronic scales after being modified, but allow the machine code in electronic scale chip 4 do variation or local variation a little, leave the vestige being tampered, in the time that reviewer recalls the Work machine code of electronic scale chip 4 by reading code equipment, just can find that variation has occurred the Work machine code being transferred out, therefore can judge that electronic scales is maliciously tampered, this mode can allow lawbreaker in involuntary situation, leave the clue of crime, be conducive to law enfrocement official taking this clue as foundation, put to the proof on evidence lawbreaker's cheating, stop illegal cheating, the fair sincerity of Maintenance Market trade.
Therefore, a kind of anti-cheated electronic weighing scale of the present utility model can allow the electronic weigher casing be the moment of taking apart electronic scale chip to be produced to trigger pip by people, being convenient to designer utilizes this trigger pip to allow electronic scale chip automatically revise inner working routine, make electronic scales cisco unity malfunction or in working routine, leave the vestige being tampered, prevent that lawless people from distorting electronic scales, guarantee sincerity, the justice of market trade environment.
As to further improvement of this embodiment, electronic scale chip 4 is encapsulated on described PCB substrate 12 in the lump with the peripheral cell being located on PCB substrate 12, after preventing that electronic scale chip 4 and various peripheral electron element from being split out easily, allow cribber plagiarize the circuit of chip program and PCB substrate 12, increased the difficulty of flight.
As to further improvement of this embodiment, on PCB substrate 12, be coated with radome (not shown in FIG.), can effectively prevent that interference unit from practising fraud from electronic scales outside.
Embodiment bis-: as shown in Fig. 7 ~ 8, the present embodiment and embodiment mono-are similar, its difference is, in trigger switch 3, be provided with normally open contact 39, normally open contact 39 can not produce trigger pip to electronic scale chip under the state disconnecting, and described triggering part is connection strap, in the present embodiment, described connection strap is tinsel 2, and tinsel 2 two ends connect respectively housing 1 and normally open contact 39.When the housing 1 of electronic scales by people for taking apart, housing 1 can be pulled on normally open contact 39 and be moved by tinsel 2, makes normally open contact 39 moment closure, so that trigger switch 3 can produce the trigger pip of the described machine code rewriting of startup module.
The NM part of the present embodiment is identical with embodiment mono-, repeats no more herein.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description, here without also giving exhaustive to all embodiments.All any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection domain of the utility model claim.
Claims (6)
1. an anti-cheated electronic weighing scale, comprise housing, base, be located at PCB substrate on described base, be located at the electronic scale chip on PCB substrate, it is characterized in that, also comprise trigger switch and trigger part, described trigger switch is arranged on described PCB substrate and is electrically connected at described electronic scale chip, be installed at housing under the state of described base, described trigger switch can not trigger, described triggering part is arranged between described housing and trigger switch, triggers part and can trigger described trigger switch with separating of described housing.
2. anti-cheated electronic weighing scale according to claim 1, is characterized in that, described trigger switch is provided with normally closed interlock, and described housing is by pressing described triggering part and tightly push away and disconnecting described normally closed interlock.
3. anti-cheated electronic weighing scale according to claim 2, is characterized in that, described triggering part is elastic component.
4. anti-cheated electronic weighing scale according to claim 1, is characterized in that, described trigger switch is provided with normally open contact, and described triggering part is connection strap, and the two ends of described connection strap connect respectively described housing and described normally open contact.
5. anti-cheated electronic weighing scale according to claim 1, is characterized in that, described electronic scale chip is encapsulated on described PCB substrate in the lump with the peripheral cell being located on PCB substrate.
6. anti-cheated electronic weighing scale according to claim 1, is characterized in that, on described PCB substrate, is coated with radome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283992.9U CN204007847U (en) | 2014-05-29 | 2014-05-29 | A kind of anti-cheated electronic weighing scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283992.9U CN204007847U (en) | 2014-05-29 | 2014-05-29 | A kind of anti-cheated electronic weighing scale |
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| Publication Number | Publication Date |
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| CN204007847U true CN204007847U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420283992.9U Expired - Lifetime CN204007847U (en) | 2014-05-29 | 2014-05-29 | A kind of anti-cheated electronic weighing scale |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994810A (en) * | 2014-05-29 | 2014-08-20 | 广州市中兴电子衡器厂 | Anti-cheating electronic scale |
| CN104501935A (en) * | 2014-12-12 | 2015-04-08 | 福建省计量科学研究院 | Anti-cheating supervision method and system for electronic scale |
| CN110440887A (en) * | 2019-08-19 | 2019-11-12 | 郑州今迈衡器有限公司 | A kind of anti-cheating Weight detecting device |
| CN113124976A (en) * | 2019-12-31 | 2021-07-16 | 广州市中兴电子衡器厂 | Self-service retail electronic scale and control method |
| CN113900009A (en) * | 2021-09-26 | 2022-01-07 | 杭州旗捷科技有限公司 | Automatic chip testing system and chip testing method |
-
2014
- 2014-05-29 CN CN201420283992.9U patent/CN204007847U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994810A (en) * | 2014-05-29 | 2014-08-20 | 广州市中兴电子衡器厂 | Anti-cheating electronic scale |
| CN103994810B (en) * | 2014-05-29 | 2016-05-25 | 广州市中兴电子衡器厂 | A kind of anti-cheated electronic weighing scale and anti-cheating method |
| CN104501935A (en) * | 2014-12-12 | 2015-04-08 | 福建省计量科学研究院 | Anti-cheating supervision method and system for electronic scale |
| CN110440887A (en) * | 2019-08-19 | 2019-11-12 | 郑州今迈衡器有限公司 | A kind of anti-cheating Weight detecting device |
| CN113124976A (en) * | 2019-12-31 | 2021-07-16 | 广州市中兴电子衡器厂 | Self-service retail electronic scale and control method |
| CN113900009A (en) * | 2021-09-26 | 2022-01-07 | 杭州旗捷科技有限公司 | Automatic chip testing system and chip testing method |
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| GR01 | Patent grant |