CN208296919U - A kind of contactless no magnetic tamper detection device for gauge table - Google Patents
A kind of contactless no magnetic tamper detection device for gauge table Download PDFInfo
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- CN208296919U CN208296919U CN201820909609.4U CN201820909609U CN208296919U CN 208296919 U CN208296919 U CN 208296919U CN 201820909609 U CN201820909609 U CN 201820909609U CN 208296919 U CN208296919 U CN 208296919U
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Abstract
The utility model discloses a kind of contactless no magnetic tamper detection devices for gauge table.It includes the detection mould group being arranged in the teletransmission electronics module of gauge table, and the detection mould group includes microprocessor and LC oscillating circuit, and the microprocessor is electrically connected with LC oscillating circuit.Whether the teletransmission electronics module that the utility model can automatically detect out gauge table is detached from common gauge table, to reduce unnecessary loss, detection accuracy is high, high reliablity.
Description
Technical field
The utility model relates to split-type metering tamper detection technique fields more particularly to a kind of for the non-of gauge table
Contact is without magnetic tamper detection device.
Background technique
Split type Internet of Things gauge table is the product most outstanding that technology of Internet of things is applied on gauge table, both has tradition
The reliability of mechanical gauge table, and the convenient low power consumption characteristic with Internet of Things communication.The structure of separate type designs, management of supplying water
Department can according to need, and first install common gauge table, when having teletransmission demand, then installs Internet of Things teletransmission electronics module, is
Internet of Things teletransmission and wisdom water utilities technology lay the foundation, and implement step by step, more flexible convenient.
But such split type structure can be destroyed in certain application environments, when split type Internet of Things gauge table
After teletransmission electronics module is detached from standard machinery gauge table body, data can not update upload, and Internet of Things cloud platform does not know to be assorted yet
It can be without more new data, so that causing damages.
Summary of the invention
The utility model to solve the above-mentioned problems, provides a kind of contactless no magnetic tamper detection for gauge table
Device is arranged in split-type metering teletransmission electronics module, and the teletransmission electronics module that can automatically detect out gauge table is
The mechanical gauge table body of no disengaging, to reduce unnecessary loss.
To solve the above-mentioned problems, the utility model is achieved using following technical scheme:
A kind of contactless no magnetic tamper detection device for gauge table of the utility model, the gauge table are fission
Formula gauge table, including teletransmission electronics module and mechanical gauge table body, the teletransmission electronics module are located at the gold of mechanical gauge table body
Belong to the side of covering, tamper detection device includes the detection mould group being arranged in the teletransmission electronics module of gauge table, the detection mould group
Including microprocessor and LC oscillating circuit, the microprocessor is electrically connected with LC oscillating circuit.
In the technical scheme, when teletransmission electronics module normal mounting is above standard machinery gauge table body metal-back,
Due to inductance coil eddy-current loss, apparent signal decaying can be presented in the LC damped oscillation that LC oscillating circuit generates.
(table is torn open) when teletransmission electronics module is detached from from mechanical gauge table body metal-back, since inductance coil is vortexed
The reason of disappearing is lost, the LC damped oscillation that LC oscillating circuit generates, which decays, to be reduced, and oscillator signal amplitude is much larger than and does not tear table open
The case where.
Microprocessor control LC oscillating circuit generates a LC damped oscillation at regular intervals, is hindered by detecting each LC
The oscillator signal amplitude situation of change of Buddhist nun's oscillation judges whether teletransmission electronics module is detached from (i.e. from mechanical gauge table body metal-back
Judge whether split table).
Preferably, the microprocessor is also electrically connected with the wireless communication module of teletransmission electronics module.Work as microprocessor
When judging that teletransmission electronics module is detached from from mechanical gauge table body metal-back, module sends warning message to object by wireless communication
Networking cloud platform.
Preferably, the LC oscillating circuit includes resistance R0, resistance R6, capacitor C2, inductance L1, metal-oxide-semiconductor Q3, metal-oxide-semiconductor
Q4, inductance L1 first end and the detection port of capacitor C2 first end, the re-charge control port of microprocessor, microprocessor are electrically connected
Connect, inductance L1 second end is electrically connected with the pole D of resistance R0 first end, resistance R6 first end, metal-oxide-semiconductor Q3, resistance R0 second end with
The electrical connection of capacitor C2 second end, the pole G of metal-oxide-semiconductor Q3 be electrically connected with the control of discharge port of microprocessor, resistance R6 second end and
The pole D of metal-oxide-semiconductor Q4 is electrically connected, and the pole G of metal-oxide-semiconductor Q4 is electrically connected with the excited oscillation control port of microprocessor, the S of metal-oxide-semiconductor Q3
Pole, metal-oxide-semiconductor Q4 the pole S be all grounded.
Preferably, a kind of contactless no magnetic tamper detection device for gauge table further includes sample circuit,
The sample circuit includes resistance R1, resistance R4, resistance R7, capacitor C1, capacitor C4, resistance R1 first end and inductance L1 first end
Electrical connection, resistance R1 second end are electrically connected with resistance R4 first end, capacitor C1 first end, resistance R4 second end and capacitor C1 second
The detection port electrical connection at end, capacitor C4 first end, resistance R7 first end, microprocessor, capacitor C4 second end, capacitor R7 second
End is all grounded.
The beneficial effects of the utility model are: whether the teletransmission electronics module that can automatically detect out gauge table is detached from commonly
Gauge table, to reduce unnecessary loss, detection accuracy is high, high reliablity.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is a kind of circuit diagram of LC oscillating circuit and sample circuit；
Fig. 3 is the waveform schematic diagram that teletransmission electronics module and mechanical gauge table body are detached from front and back.
In figure: 1, microprocessor, 2, LC oscillating circuit, 3, teletransmission electronics module, 4, mechanical gauge table body.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment: a kind of contactless no magnetic tamper detection device for gauge table of the present embodiment, as shown in Figure 1,
Gauge table is split-type metering, including teletransmission electronics module 3 and mechanical gauge table body 4, teletransmission electronics module 3 are located at mechanical meter
Above the metal cover of scale body 4, tamper detection device includes in the teletransmission electronics module for be arranged in gauge table 3 detection mould group,
Detecting mould group includes microprocessor 1 and LC oscillating circuit 2, and microprocessor 1 is electrically connected with LC oscillating circuit 2.
Teletransmission electronics module and the spacing of mechanical gauge table body are less than or equal to 5mm.When teletransmission electronics module normal mounting exists
When above standard machinery gauge table body metal-back, due to inductance coil eddy-current loss, the LC that LC oscillating circuit generates hinders
Apparent signal decaying can be presented in Buddhist nun's oscillation.
(table is torn open) when teletransmission electronics module is detached from from mechanical gauge table body metal-back, since inductance coil is vortexed
The reason of disappearing is lost, the LC damped oscillation that LC oscillating circuit generates, which decays, to be reduced, and oscillator signal amplitude is much larger than and does not tear table open
The case where, as shown in Figure 3.
Microprocessor control LC oscillating circuit generates a LC damped oscillation at regular intervals, is hindered by detecting each LC
The oscillator signal amplitude situation of change of Buddhist nun's oscillation judges whether teletransmission electronics module is detached from (i.e. from mechanical gauge table body metal-back
Judge whether split table).Such as: microprocessor control LC oscillating circuit generates a LC damped oscillation at regular intervals, every
Secondary LC damped oscillation start after collect within K seconds oscillating voltage signal value V2, if V1-V2 > Δ V ', determines gauge table
Teletransmission electronics module be removed, if V1-V2 < Δ V ", determine that the teletransmission electronics module of gauge table is not removed, V1
For the gauge table that measures in advance oscillating voltage signal value of the LC damped oscillation at K seconds when intact, Δ V ', Δ V " are preset
Numerical value.
Microprocessor is also electrically connected with the wireless communication module of teletransmission electronics module.When microprocessor judges teletransmission electronic die
When group is detached from from mechanical gauge table body metal-back, module sends warning message to Internet of Things cloud platform by wireless communication.
As shown in Fig. 2, tamper detection device further includes sample circuit, LC oscillating circuit 2 includes resistance R0, resistance R6, electricity
Hold C2, inductance L1, metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4, sample circuit includes resistance R1, resistance R4, resistance R7, capacitor C1, capacitor C4, electricity
Sense L1 first end is electrically connected with the re-charge control port of capacitor C2 first end, resistance R1 first end, microprocessor 1, inductance L1 the
Two ends are electrically connected with the pole D of resistance R0 first end, resistance R6 first end, metal-oxide-semiconductor Q3, resistance R0 second end and capacitor C2 second end
Electrical connection, the pole G of metal-oxide-semiconductor Q3 are electrically connected with the control of discharge port of microprocessor 1, the pole D of resistance R6 second end and metal-oxide-semiconductor Q4
Electrical connection, the pole G of metal-oxide-semiconductor Q4 is electrically connected with the excited oscillation control port of microprocessor 1, the pole S of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4
The pole S is all grounded, and resistance R1 second end is electrically connected with resistance R4 first end, capacitor C1 first end, resistance R4 second end and capacitor C1
The detection port electrical connection of second end, capacitor C4 first end, resistance R7 first end, microprocessor 1, capacitor C4 second end, capacitor
R7 second end is all grounded.
Claims (4)
1. a kind of contactless no magnetic tamper detection device for gauge table, the gauge table is split-type metering, including
Teletransmission electronics module (3) and mechanical gauge table body (4), the teletransmission electronics module (3) are located at the metal of mechanical gauge table body (4)
The side of covering, which is characterized in that including the detection mould group being arranged in the teletransmission electronics module (3) of gauge table, the detection mould group
Including microprocessor (1) and LC oscillating circuit (2), the microprocessor (1) is electrically connected with LC oscillating circuit (2).
2. a kind of contactless no magnetic tamper detection device for gauge table according to claim 1, which is characterized in that
The microprocessor (1) is also electrically connected with the wireless communication module of teletransmission electronics module (3).
3. a kind of contactless no magnetic tamper detection device for gauge table according to claim 1, which is characterized in that
The LC oscillating circuit includes resistance R0, resistance R6, capacitor C2, inductance L1, metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4, inductance L1 first end with
The detection port electrical connection of capacitor C2 first end, the re-charge control port of microprocessor (1), microprocessor (1), inductance L1 second
End is electrically connected with the pole D of resistance R0 first end, resistance R6 first end, metal-oxide-semiconductor Q3, resistance R0 second end and capacitor C2 second end electricity
Connection, the pole G of metal-oxide-semiconductor Q3 are electrically connected with the control of discharge port of microprocessor (1), the pole D of resistance R6 second end and metal-oxide-semiconductor Q4
Electrical connection, the pole G of metal-oxide-semiconductor Q4 are electrically connected with the excited oscillation control port of microprocessor (1), the pole S of metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4
The pole S be all grounded.
4. a kind of contactless no magnetic tamper detection device for gauge table according to claim 3, which is characterized in that
It further include sample circuit, the sample circuit includes resistance R1, resistance R4, resistance R7, capacitor C1, capacitor C4, resistance R1 first
End is electrically connected with inductance L1 first end, and resistance R1 second end is electrically connected with resistance R4 first end, capacitor C1 first end, resistance R4 the
Two ends are electrically connected with the detection port of capacitor C1 second end, capacitor C4 first end, resistance R7 first end, microprocessor (1), capacitor
C4 second end, capacitor R7 second end are all grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820909609.4U CN208296919U (en) | 2018-06-12 | 2018-06-12 | A kind of contactless no magnetic tamper detection device for gauge table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820909609.4U CN208296919U (en) | 2018-06-12 | 2018-06-12 | A kind of contactless no magnetic tamper detection device for gauge table |
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| Publication Number | Publication Date |
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| CN208296919U true CN208296919U (en) | 2018-12-28 |
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| CN201820909609.4U Active CN208296919U (en) | 2018-06-12 | 2018-06-12 | A kind of contactless no magnetic tamper detection device for gauge table |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981772A (en) * | 2018-06-12 | 2018-12-11 | 杭州绿鲸科技有限公司 | A kind of contactless no magnetic tamper detection device and method for gauge table |
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2018
- 2018-06-12 CN CN201820909609.4U patent/CN208296919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108981772A (en) * | 2018-06-12 | 2018-12-11 | 杭州绿鲸科技有限公司 | A kind of contactless no magnetic tamper detection device and method for gauge table |
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