CN1327207A - Anti-cheating automatic device for metering utensil - Google Patents
Anti-cheating automatic device for metering utensil Download PDFInfo
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- CN1327207A CN1327207A CN 01108861 CN01108861A CN1327207A CN 1327207 A CN1327207 A CN 1327207A CN 01108861 CN01108861 CN 01108861 CN 01108861 A CN01108861 A CN 01108861A CN 1327207 A CN1327207 A CN 1327207A
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Abstract
The automatic anti-cheating device for metering utensil makes the illegal user incapable of accessing to the key parts of the metering utensil. The structure, the metering parameters and display can not be illegally altered, or the metering utensil will be in its unable state while recording the cheating action. Technological, it consists of the key metering parts in some package, a cheating action sensor to force the metering utensil in its unable static in case of cheating action and a cheating action recording part.
Description
The present invention relates to a kind of product that prevents the measurement instrument cheating, is the creation in the measurement instrument anti-tampering technology field.
At present, anti-cheating device on the measurement instrument is all simpler, be that (on the meter as the oil fuel charger) seals up " lead sealing " on (as watt-hour meter) on the case lid of measurement instrument shell or metering critical component, change the purpose that measuring parameter reaches cheating to prevent the cribber.But along with development of technology, the cheating technology is also constantly improving, and forges " lead sealing " and is easy to, like this, differentiates that " lead sealing " true and false difficulty is big and can not find other cheating evidence, brings very big difficulty with the method management for measurement instrument administrative service division.Even find false " lead sealing " or find destruction " lead sealing ", succeed but practise fraud, the cribber has obtained an illicit income because of cheating.Thereby, cause present cheating activity to act recklessly to measurement instrument, become problem anxious to be solved.
The present invention will design a kind of product that can prevent the measurement instrument cheating, contains the malpractice that society upward practises fraud to measurement instrument with this.
For achieving the above object, the present invention takes following technical scheme:
The total design of the technical program is: with one " metering key component pack case " the metering critical component (all influence the parts of measuring parameter and display result accuracy to refer to meter, gage probe, analog to digital converter, counter, single-chip microcomputer etc.) of measurement instrument is carried out the one closure and pack.As long as the cribber can't open, damaged this pack case, just can't change mechanical realization, the circuit configurations of metering key component, measuring parameter, display result, just do not reach the purpose of cheating, so this anti-cheating device is " key component pack case " breakage, case lid is opened, and environment temperature transfinites and all regards as cheating and handle.For this anti-cheating aut.eq. is not damaged, this installs each parts and also puts in " key component pack case ".
This anti-cheating aut.eq. forces the device of gage work start and stop and the device of record cheating information to form by device, instruction and the execution of key component pack case, perception cheating.Just can force measurement instrument to be in inoperable state when having perceived cheating immediately, and write down the evidence of cheating, prevent to practise fraud with this and succeed, and the evidence of cheating is provided to law enforcement agency with box lunch.
For making anti-cheating automatic device for metering utensil have above function, this device should have following mechanical realization: " differentiating cheating and control device ", " control gage work start and stop (often stopping type) performer ", " cheating information recorder spare ", " environment temperature is invaded and harassed sensor ", " housing breakage sensor " circuit part, " case lid be opened sensor " circuit part of the metering key component of measurement instrument and this device, " direct supply " in " measuring crucial pack case " inner packing; On packaging shell, install " housing breakage sensor " sensitive components, " case lid be opened sensor " sensitive components and coded lock.
For making anti-cheating automatic device for metering utensil that above-mentioned functions be arranged, this device need have following circuit configurations: environment is invaded and harassed, the housing breakage, the case lid signal output parts of three kinds of anti-cheating sensors such as be opened link to each other with each input end of " differentiating cheating and control device " respectively, the output terminal (or bidirectional port) of " differentiating cheating and control device " and " control gage work start and stop (often stopping type) performer " input end, " cheating information recorder spare " input end links to each other, two output terminals of " control gage work start and stop (often stopping type) performer " are serially connected among the gage work engineering chain of being made up of the metering key component, " direct supply " respectively with each electricity consumption device, circuit links to each other, the screen layer of housing nexine and " direct supply " " " hold and link to each other.
Now the concrete function of various mentioned components, concrete structure, physical circuit are elaborated: " metering key component pack case " is meant the housing of package metro-measuring critical component.For the little measurement instrument of volume, this housing can replace the external packing shell of measurement instrument and the two is united two into one.For bulky measurement instrument, " metering key component pack case " is arranged on measurement instrument external packing shell the inside.If the metering key component distributes concentrate, this pack case can be made a cavity.If the metering key component distributes disperse, this pack case can be made a plurality of cavitys, links with the tubulose shell between each cavity, makes each cavity, tubulose shell link the closure packing that becomes one.For repairing, verification need, can on cavity, open one or more mouthful, each mouth is adorned a case lid.All parts of this pack case (comprising cavity, tubulose shell, case lid) all are three layers: outer is the hard protective seam, and nexine is a screen layer, and the centre is the responsive interlayer of the responsive unit of device " housing breakage sensor ", device.
" environment temperature is invaded and harassed sensor " is meant the sensor of following function; When the environment temperature around the sensor exceeds the upper limit that allowed or lower limit temperature, the cheating alerting signal of the electric potential signal opposite potential that sensor is just exported during the not super upper and lower limit of output and environment temperature.In mature technology, the sensor of this function is a lot.Now enumerate two examples: (1) TC620 type temperature controller.Because super upper and lower limit temperature signal all is the cheating alerting signal, be preferably on the end of " 6 ", " 7 " and connect an OR circuit, or the gate output terminal alarm signal output ends of promptly practising fraud.(2) multiple-contact mercury-in-glass thermometer and contact pickup current amplifying circuit.Environment temperature can be without this sensor to the anti-cheating aut.eq. of the little measurement instrument of measuring parameter influence.
" housing breakage sensor " is meant the sensor of following function: when housing punchinged, split, when broken, sensor just output with housing the cheating alerting signal of the electric potential signal opposite potential of output when damaged.The sensitive element of this sensor all installs on housing.There is the sensor of such function a lot of in the mature technology, now enumerates two examples: (1) gas sensor.The characteristics of using in the technical program are that the responsive interlayer in the centre of housing (interlayer of case lid links to each other with flexible pipe with the interlayer of cavity) is made the closure interlayer, dress gas sensor and reducibility gas in the interlayer.(2) circuit disconnects sensor.Characteristics used herein are: the responsive interlayer of housing is made with hard insulation, and input end jump in potential of sensor electrical route can cause the logical circuit and an input circuit (for example resistor voltage divider circuit) composition of output terminal jump in potential.One section lead of input circuit elongated each corner of weaving, interlock, fill at insulation course as sensitive element.The modulation input circuit parameter makes it when responsive lead is not disconnected, gives definite current potential of logical circuit input end (noble potential or electronegative potential) and after responsive lead disconnected, this input current potential can saltus step be opposite current potential.In addition, also can select optical fiber breakaway-element Fibre Optical Sensor (its usage is identical with circuit disconnection sensor) for use.
" case lid be opened sensor " be meant in case lid and be opened (though or do not open, executed open the subprogram of shell spare lid) sensor of alerting signal will take place.In mature technology, there is the sensor of this function a lot, now enumerates two examples: (1) capacitive displacement transducer.Characteristics used herein be in the case lid open place on one side and corresponding motionless cavity mouth along locating respectively to adorn a capacitor plate, between two capacitor plates across insulating medium.(2) piezoelectric pressure indicator, characteristics used herein be at the accent of case lid open place and its correspondence along placing piezoelectric element, and with bolted, compress piezoelectric element.In addition, can be selected as multiple displacement transducers such as inductance types.
" differentiate cheating and control device " be meant to have and can have judged whether the cheating alerting signal, and can export and the components and parts of the corresponding command signal of judged result.Promptly when above-mentioned three kinds of anti-cheating sensors did not send the cheating alerting signal entirely, output made gage work start the electric potential signal instruction of operation.And when having one the cheating alerting signal is arranged in anti-cheating sensor, this circuit output is instructed with original opposite electric potential signal.There is the device of above function can divide two kinds: the automatic control circuit that (1) is made up of digital circuit (as: various gate circuits all can).(2) single-chip microcomputer.(this single-chip microcomputer can unite two into one with single-chip microcomputer with metering).
In order to prevent that the cribber from substituting the single-chip microcomputer of this anti-cheating aut.eq. for another surreptitiously, each such single-chip microcomputer all have one be cured in the single-chip microcomputer, can be for inquiry, exclusive identification cipher.
" control gage work start and stop (often stopping type) performer " is meant the control signal of execution " differentiation cheating and control device " output, controls gage work and starts operation or out-of-work device.So-called " often stopping type " is meant the device of following characteristics: when this performer does not connect power supply, be in the state that gage work is stopped, connect power supply, " differentiate cheating and control device " when this actuator sends the electric potential signal of " starting operation ", this performer is just transferred to by " often stopping state " makes the gage work operative condition.Receive control when the input end of this performer and stop the electric potential signal of gage work, will cut off accounting procedure engineering chain immediately, force measurement instrument to be in disabled state.According to the requirement of above-mentioned functions, " control gage work start and stop (often stopping type) performer " can be a reed contact formula relay, solid-state relay SSR, also can select on-off circuit for use.
" cheating information recorder spare " is meant the device that can write down, provide the cheating evidence.Can select two kinds in prior art for use: " differentiating cheating and control device " that (1) and digital circuit are formed is matched to be: the sealing series circuit that two output terminals of relay, low withstand voltage transistor, high-voltage power supply are formed.(2) and to select single-chip microcomputer for use be that " differentiate cheating and control device " is supporting, can select nonvolatile memory for use.Nonvolatile memory was stored with preface by will practise fraud time, kind of the instruction of single-chip microcomputer, and long preservation is for inquiry.
For preventing that cribber's information recorder spare of will practising fraud from substituting for another surreptitiously, eliminate the cheating evidence, that " the cheating information recorder spare " of each anti-cheating device all is composed of is own exclusive, can be for the identification cipher of inquiry.If the easy storer of the right and wrong of usefulness, in this storer storage own exclusive, can be for the password of inquiry.If the transistor of usefulness (or cartridge fuse) is as the cheating evidence, following scrambler can set up: on the transistor (or cartridge fuse) in a flat board of casting with insulating resin, be wrapped in second tube sheet, lead that recording transistor (or cartridge fuse) and encryption are used, make it to be integral.Respectively there are 10 electric contacts on the two sides of resin plate, and 10 pairs of electric contacts are formed in the corresponding pairing in two sides respectively.Each by second tube sheet or wire bond (also can emptyly not linking), measures each to electric contact with ten thousand tables to electric contact, will be diode forward, oppositely, a state in the short circuit, the four condition that opens circuit.Like this ten pairs state is lined up, be actually ten quaternary numbers.And such number always has 1048576.Thereby each registering device can select one of them digital as own identity digital exclusive, that can Gong check.In order to make these numbers become password, put in order difference and be random of the electric contact on resin plate two sides, the supervisory personnel that need predict password needs according to subsidiary, the exclusive pairing figure of each scrambler, just can find two positions that are made into certain a pair of electric contact, the cribber who does not have " pairing figure " can't predict.
Select the anti-cheating device of single-chip microcomputer as " differentiate cheating and control circuit " for use, increase by one in scm software has the alerting signal of practising fraud just can the automatic blocking program circuit and send the program coded lock software of control signal.Content is: open a particular space in nonvolatile memory, for depositing interim storage (can wipe) cheating alarm logging.In program circuit, increase " the cheating alerting signal has not ", " decoded signal has not " two determining programs, scrutiny program and two handling procedures such as " face and deposit alarm logging ", " wipe to face and deposit alarm logging " of one " the decoding password right ".The connection relationship of these programs is: the inlet of " the cheating alerting signal has not " links with " initialization " outlet, and its "No" outlet links to each other with other program entry, and " having " outlet links with " face and deposit alarm logging " inlet.And the inlet of the outlet of " face and deposit alarm logging " and " decoded signal has not " connects.The "No" outlet of " decoded signal has not " links to each other with " output control signal " program, " there are " outlet and the inlet of " the decoding password right " to connect, the "No" outlet of " the decoding password right " links to each other with " output control signal " program, " to " outlet connects with the inlet of " wipe to face and deposit alarm logging ", and the inlet of the outlet of " wipe to face and deposit alarm logging " and " initialization " connects.When decoding, the decoding password is sent into from system's serial port.
Coded lock and direct supply are well known, and needn't give unnecessary details.
From above narration, metering key component pack case is the main anti-cheating barrier of this anti-cheating aut.eq., do not open, unbreakable pack case just can't be juggled things to the metering key component, the purpose of cheating can't be reached, and case lid will be opened, package in damaged condition shell spare, perhaps invade and harass the super upper and lower limit of environment temperature, this anti-cheating device all can force measurement instrument to stop gage work immediately by force: the cribber is cannot succeed.And note the evidence of cheating.The cribber wants to substitute for another surreptitiously single-chip microcomputer or cheating information recorder spare is impossible again.Therefore, this prevents that cheating aut.eq. not only can stop the cribber to practise fraud and succeed, and evidence is provided for the processing cribber of measuring control administrative department, therefore say the enforcement of the technical program, to hitting, punishing severely important effect is played in the cheating criminal activity meeting of measurement instrument.
Below in conjunction with accompanying drawing the technical program is further described:
Fig. 1 is the mechanical realization synoptic diagram of anti-cheating automatic device for metering utensil.
Fig. 2 is the circuit configurations figure of anti-cheating automatic device for metering utensil.
Fig. 3 is the anti-cheating aut.eq. circuit theory diagrams of small-size electronic scale (choosing " rejection gate " is for differentiating cheating and control device) of one of embodiment.
Fig. 4 is the anti-cheating aut.eq. circuit theory diagrams of two small-size electronic scale (selecting single-chip microcomputer is to differentiate cheating and control device) of embodiment.
[1] is metering key component pack case among the figure.[1.1] be the hard protective seam of metering key component pack case crust.[1.2] be the screen layer of metering key component pack case nexine.[1.3] be the responsive interlayer of housing breakage sensor in metering key component pack case middle level.[2] be housing breakage sensor circuit part.[3] be case lid.[4.1] the case lid sensor circuit part that is opened.[4.2] the case lid sensor sensing components and parts that are opened.[5] be to differentiate cheating and control device.[6] be that environment temperature is invaded and harassed sensor.[7] be control gage work start and stop (often stopping type) performers.[8] be cheating information recorder spare.[9] be direct supply.[10] be the metering key component.[11] be the non-metering key component of measurement instrument.[12] be the meter shell.[13] case lid bolt.[14] be coded lock.
According to above introduction, just can be easy to design the embodiment that the anti-cheating demand of the various measurement instruments of adaptation is asked.Below, by two the typical embodiment of knot that are situated between, specify the best way of enforcement:
Embodiment 1: the anti-cheating of small-size electronic scale (selecting rejection gate is " differentiating cheating and control device ") is device automatically.
" measuring crucial pack case " of present embodiment because of the volume of small-size electronic scale is little, preferably can unite two into one with the pack case of scale, and only does a cavity, covers at the bottom opening device case.
" case lid be opened sensor " selects piezoelectric pressure indicator for use, and piezoelectric element [4.2] is selected the quartz crystal piezoelectric element for use, and circuit [4.1] is by charge amplifier, filtering circuit, voltage amplifier, and double-limit comparator and a phase inverter are formed.Its circuit parameter modulator approach is: adjust double-limit comparator input divider resistance and determine threshold voltage (this numeral for externally maintaining secrecy).Preferably from A
2Output terminal draws thin wire aperture from housing pulls out outside the shell, cover case lid after, compress piezoelectric element gradually with bolt, make the voltage of thin wire end rise between the threshold voltage gradually till.Afterwards, thin wire is broken to the housing.
" environment temperature is invaded and harassed sensor " [6] select TC620XEPA type temperature controller for use.To the temperature range requirement, preferably adjust R according to general small-size electronic scale
SLMake the lower bound temperature be-10 ℃.Adjust R
SHMaking high limit temperature is 40 ℃.
" housing breakage sensor " selects " circuit disconnection sensor " for use, and the most handy lead of its sensitive element [1.3] weaves, fills insulation course is responsive interlayer.Sensor circuit part [2] is that a phase inverter and two divider resistances are formed.
[5] select one " OR-NOT circuit " for use " to differentiate cheating and control device ".Utilize the logic function of rejection gate to finish the task that the differentiation cheating has or not and send control signal.
" control gage work start and stop (often stopping type) performer " [7] select solid-state relay SSR for use, present embodiment is preferably SSR output terminal C to be connected on electronic scales low-pass filter circuit output terminal, output terminal D is connected on the IN+ end of electronic weighing scale A/D converter 7135, so that finish the task of switching on or off metering engineering chain.
" cheating information recorder spare " [8] preferably select SSR output terminal C, D for use.Diode SBD20A (voltage breakdown 15V), 30V direct supply form the sealing series circuit.Its exclusive identification cipher setting as previously discussed.
The power supply of anti-cheating aut.eq. can with the same direct supply of measurement instrument.
For the purpose of safer, can be on case lid encrypted code lock (also can).
Present embodiment is except that " differentiating cheating and control device ", " cheating information recorder spare ", and all the other each parts are all identical with embodiment 1, repeat no more.
" differentiate cheating and control device " of present embodiment selects 8031 single-chip microcomputers for use, and on single-chip microcomputer, be solidified with own exclusive, can be for the identification cipher and the program coded lock software of inquiry.
" the cheating information recorder spare " of present embodiment preferably selects for use electricity to wipe, and outage can be preserved the ROM (read-only memory) E of the data of storing
2PROM, the model of this nonvolatile memory is selected 2816A for use, and each such storer all stores the identification cipher of own exclusive Gong inquiry.
Claims (8)
1, a kind of anti-cheating device that is used on the measurement instrument to prevent to the measurement instrument cheating that is installed in; it is characterized in that with packing, protect metering key component and this to install the pack case of each parts, but be opened with this pack case of perception, forced the device of gage work start and stop and the common anti-cheating automatic device for metering utensil that constitutes of device of record cheating evidence by device, instruction and the execution of cheating such as damaged, that environment temperature transfinites.
2, the described anti-cheating automatic device for metering utensil of claim 1, its mechanical realization feature is: in " metering key component pack case ", packing the metering key component of measurement instrument and " differentiating cheating and control device " of this anti-cheating aut.eq., " often stop type control gage work start and stop performer ", " cheating information recorder spare ", " environment temperature is invaded and harassed sensor ", " housing breakage sensor " circuit part, " case lid be opened sensor " circuit part, " direct supply ", the responsive unit of device " housing breakage sensor " on metering key component packaging shell, device portions, " case lid be opened sensor " responsive unit, device portions and coded lock.
3, the described anti-cheating automatic device for metering utensil of claim 1, its circuit configurations feature is: environment is invaded and harassed, the housing breakage, the case lid signal output part of three kinds of sensors such as be opened links to each other with each input end of " differentiating cheating and control device " respectively, the output terminal of " differentiating cheating and control device " or bidirectional port and " often stopping type control gage work start and stop performer " input end, " cheating information recorder spare " input end links to each other, two output terminals that " often stop type control gage work start and stop performer " are serially connected among the gage work engineering chain of being made up of the metering key component, direct supply links to each other with each electricity consumption device of this anti-cheating aut.eq. respectively, screen layer and direct supply " " hold and link to each other.
4, described differentiation cheating of claim 3 and control device is characterized in that the automatic control circuit that adopts digital circuit to form.
5, described differentiation cheating of claim 3 and control device, what it is characterized in that adopting is single-chip microcomputer.
6, the described cheating of claim 3 information recorder spare is characterized in that: each all is " the cheating information recorder spare " that is carrying own exclusive, as can to supply inquiry identification cipher.
7, the described single-chip microcomputer of claim 3 is characterized in that: each all has one to be cured in the single-chip microcomputer, can be for inquiry, exclusive identification cipher.
8, the described single-chip microcomputer of claim 3 is characterized in that: be solidified with in it and receive that the cheating alerting signal just can the locking program circuit, receive the program coded lock software that can remove locking behind the decoded signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011088613A CN1141658C (en) | 2000-06-04 | 2001-03-02 | Anti-cheating automatic device for metering utensil |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00118402 | 2000-06-04 | ||
| CN00118402.4 | 2000-06-04 | ||
| CNB011088613A CN1141658C (en) | 2000-06-04 | 2001-03-02 | Anti-cheating automatic device for metering utensil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1327207A true CN1327207A (en) | 2001-12-19 |
| CN1141658C CN1141658C (en) | 2004-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011088613A Expired - Fee Related CN1141658C (en) | 2000-06-04 | 2001-03-02 | Anti-cheating automatic device for metering utensil |
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| Country | Link |
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| CN (1) | CN1141658C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424716A (en) * | 2012-05-17 | 2013-12-04 | 安徽宏实光机电高科有限公司 | Lamp tube detection system based on application of color sorter |
| CN104535163A (en) * | 2014-12-31 | 2015-04-22 | 福州科迪电子技术有限公司 | Method for preventing display value of electronic balance from being tampered with |
-
2001
- 2001-03-02 CN CNB011088613A patent/CN1141658C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424716A (en) * | 2012-05-17 | 2013-12-04 | 安徽宏实光机电高科有限公司 | Lamp tube detection system based on application of color sorter |
| CN104535163A (en) * | 2014-12-31 | 2015-04-22 | 福州科迪电子技术有限公司 | Method for preventing display value of electronic balance from being tampered with |
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| Publication number | Publication date |
|---|---|
| CN1141658C (en) | 2004-03-10 |
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