CN205563934U - Nearly electric induction formula post employee's card - Google Patents
Nearly electric induction formula post employee's card Download PDFInfo
- Publication number
- CN205563934U CN205563934U CN201620192929.3U CN201620192929U CN205563934U CN 205563934 U CN205563934 U CN 205563934U CN 201620192929 U CN201620192929 U CN 201620192929U CN 205563934 U CN205563934 U CN 205563934U
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- CN
- China
- Prior art keywords
- resistance
- circuit
- operational amplifier
- electric capacity
- card
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a nearly electric induction formula post employee's card. Including signal reception module (1), signal reception module (1) is connected with frequency -selecting circuit (2), and frequency -selecting circuit (2) are connected with threshold voltage circuit (3), and threshold voltage circuit (3) are connected with warning circuit (4), signal reception module (1) including induction antenna (5), induction antenna (5) are connected with amplifier circuit (6). The utility model has the characteristics of use convenient to carry, simple structure, with low costs, convenient to use and security high.
Description
Technical field
This utility model relates to the post card in electric power apparatus examination field, particularly a kind of nearly electric induction formula post employee's card.
Background technology
In recent years,
The security incident caused owing to the person gets an electric shock is the severeest, although job site takes a lot of security management and control measure, but people is not machine after all, can make mistakes, it is therefore necessary to take technological means to avoid the person to get an electric shock and to control device reliable with manager to strengthen the security control of job site.
Summary of the invention
The purpose of this utility model is, it is provided that a kind of nearly electric induction formula post employee's card
.This utility model has use easy to carry, simple in construction, low cost, easy to use and safety high feature.
The technical solution of the utility model: a kind of nearly electric induction formula post employee's card, including signal receiving module, signal receiving module is connected with frequency selection circuit, and frequency selection circuit is connected with threshold voltage circuit, and threshold voltage circuit is connected with warning circuit；Described signal receiving module includes that induction antenna, induction antenna are connected with amplifying circuit.
In the employee's card of aforesaid nearly electric induction formula post, described amplifying circuit includes the first operational amplifier, the in-phase input end of the first operational amplifier is connected with induction antenna through the first electric capacity, the inverting input of the first operational amplifier and the upper end of the first resistance connect, the lower end ground connection of the first resistance, the upper end of the first resistance is also associated with the second resistance with the outfan of the first operational amplifier, and the outfan of the first operational amplifier is connected with frequency selection circuit.
In the employee's card of aforesaid nearly electric induction formula post, described frequency selection circuit includes the second operational amplifier, and the in-phase input end of the second operational amplifier and the upper end of the 3rd resistance connect, and the 3rd resistance and the second electric capacity are in parallel；The 3rd electric capacity and the 4th resistance also it is in series with between the outfan of the second described operational amplifier and its in-phase input end；The outfan of the second described operational amplifier also upper end with the 5th resistance is connected, and the lower end of the 5th resistance is simultaneously connected with the upper end of the inverting input of the second operational amplifier and the 6th resistance；The inverting input of described the 3rd resistance, the second electric capacity and the lower end of the 6th resistance and the second operational amplifier ground connection simultaneously；The upper end of the second described electric capacity and the lower end of the 3rd electric capacity are connected with the outfan of the first operational amplifier simultaneously；The lower end of the 5th described resistance is connected with threshold voltage circuit with the upper end of the 6th resistance simultaneously；The positive and negative power end of the second described operational amplifier is also associated with 12V power supply.
In the employee's card of aforesaid nearly electric induction formula post, described warning circuit includes "AND" circuit, one input of "AND" circuit is connected with threshold voltage circuit through the 4th electric capacity, and another input is connected with alarm through the 7th resistance eutral grounding, the outfan of "AND" circuit.
Compared with prior art, signal receiving module, frequency selection circuit, threshold voltage circuit and warning circuit are integrated on the employee's card of post by this utility model, and its integrated level is high so that it is structure is simpler, small and exquisite, carries convenient, also make it with low cost simultaneously.This utility model is in use, microvolt magnitude voltage signals is received by induction antenna, this voltage signal is after amplifying circuit amplifies, through frequency selection circuit, further for the signal of 50Hz gain is amplified and other frequency signals are intercepted, the gain signal of the 50Hz after amplification is converted into square-wave signal through threshold voltage circuit again, this square-wave signal carries out logic "and" operation at "AND" circuit after arriving warning circuit, trigger alarm and send buzzing, after staff hears buzzing, just can know arrival Danger Electric shock risk region, corresponding measure can be taked；By this structure, post employee's card when entering Danger Electric shock risk region can automatic alarm, not only safety is higher, and easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the electrical block diagram of amplifying circuit；
Fig. 3 is the structural representation of frequency selection circuit；
Fig. 4 is the structural representation of warning circuit.
Being labeled as in accompanying drawing: 1-
Signal receiving module, 2-frequency selection circuit, 3-threshold voltage circuit, 4-warning circuit, 5-induction antenna, 6-amplifying circuit, 7-the first operational amplifier, 8-the second operational amplifier, 9-"AND" circuit, 10-alarm, R1-the first resistance, R2-the second resistance, R3-the 3rd resistance, R4-the 4th resistance, R5-the 5th resistance, R6-the 6th resistance
R7-the 7th resistance, C1-the first electric capacity, C1-the first electric capacity, C2-the second electric capacity, C3-the 3rd electric capacity, C4-the 4th electric capacity.
Detailed description of the invention
With embodiment, this utility model is further described below in conjunction with the accompanying drawings, but is not intended as the foundation that this utility model is limited.
Embodiment.A kind of nearly electric induction formula post employee's card, is constituted such as figure
1
Shown in, including signal receiving module 1, signal receiving module 1 is connected with frequency selection circuit 2, and frequency selection circuit 2 is connected with threshold voltage circuit 3, and threshold voltage circuit 3 is connected with warning circuit 4；Described signal receiving module 1 includes that induction antenna 5, induction antenna 5 are connected with amplifying circuit 6.
Aforesaid amplifying circuit 6 constitutes as shown in Figure 2, including the first operational amplifier 7, the in-phase input end of the first operational amplifier 7 is connected with induction antenna 5 through the first electric capacity C1, the inverting input of the first operational amplifier 7 and the upper end of the first resistance R1 connect, the lower end ground connection of the first resistance R1, the upper end of the first resistance R1 is also associated with the second resistance R2 with the outfan of the first operational amplifier 7, and the outfan of the first operational amplifier 7 is connected with frequency selection circuit 2.
Aforesaid frequency selection circuit 2 constitutes as it is shown on figure 3, include the second operational amplifier 8, and the in-phase input end of the second operational amplifier 8 and the upper end of the 3rd resistance R3 connect, and the 3rd resistance R3 and the second electric capacity C2 is in parallel；The 3rd electric capacity C3 and the 4th resistance R4 also it is in series with between the outfan of the second described operational amplifier 8 and its in-phase input end；The outfan of the second described operational amplifier 8 also upper end with the 5th resistance R5 is connected, and the lower end of the 5th resistance R5 is simultaneously connected with the inverting input of the second operational amplifier 8 and the upper end of the 6th resistance R6；The inverting input of described the 3rd resistance R3, the second electric capacity C2 and the lower end of the 6th resistance R6 and the second operational amplifier 8 ground connection simultaneously；The upper end of the second described electric capacity C2 and the lower end of the 3rd electric capacity C3 are connected with the outfan of the first operational amplifier 7 simultaneously；The lower end of the 5th described resistance R5 is connected with threshold voltage circuit 3 with the upper end of the 6th resistance R6 simultaneously；The positive and negative power end of the second described operational amplifier 8 is also associated with 12V power supply.
Aforesaid warning circuit 4 constitutes as shown in Figure 4, including "AND" circuit 9, one input of "AND" circuit 9 is connected with threshold voltage circuit 3 through the 4th electric capacity C4, and another input is connected with alarm 10 through the 7th resistance R7 ground connection, the outfan of "AND" circuit 9.
Aforesaid threshold voltage circuit 3 is the commonly used electronic circuit that sinusoidal wave exchange input transfers to direct-flow output signal.
Operation principle of the present utility model: after staff carries post employee's card entrance charging zone, alarm 10 buzzing is reported to the police after arriving deathtrap；The induction antenna 5 being specially on the employee's card of post receives microvolt magnitude voltage signals, this signal is amplified to running voltage through amplifying circuit 6 and is transferred to frequency selection circuit 2, the further gain of signal that this signal intermediate frequency rate is 50Hz is amplified and intercepts other frequency signals (by this structure by frequency selection circuit 2, can effectively prevent wrong report and reduce interference), the gain signal of the 50Hz after amplification is converted into square-wave signal through threshold voltage circuit 3 again, this square-wave signal carries out logic "and" operation after arriving warning circuit 4 in "AND" circuit 9, when square-wave signal is in high level, then "AND" circuit 9 exports high level signal and triggers alarm 10 buzzing warning.
Claims (4)
1. a nearly electric induction formula post employee's card, it is characterised in that: include signal receiving module (1), letter
Number receiver module (1) is connected with frequency selection circuit (2), frequency selection circuit (2) and threshold voltage circuit (3)
Connecting, threshold voltage circuit (3) is connected with warning circuit (4)；Described signal receiving module (1) bag
Including induction antenna (5), induction antenna (5) is connected with amplifying circuit (6).
Nearly electric induction formula post the most according to claim 1 employee's card, it is characterised in that: described puts
Big circuit (6) includes the first operational amplifier (7), the in-phase input end warp of the first operational amplifier (7)
First electric capacity (C1) is connected with induction antenna (5), the inverting input of the first operational amplifier (7) with
The upper end of the first resistance (R1) connects, the lower end ground connection of the first resistance (R1), the first resistance (R1)
Upper end is also associated with the second resistance (R2), the first operation amplifier with the outfan of the first operational amplifier (7)
The outfan of device (7) is connected with frequency selection circuit (2).
Nearly electric induction formula post the most according to claim 2 employee's card, it is characterised in that: described choosing
Frequency circuit (2) includes the second operational amplifier (8), the in-phase input end of the second operational amplifier (8) with
The upper end of the 3rd resistance (R3) connects, and the 3rd resistance (R3) is in parallel with the second electric capacity (C2)；Described
The 3rd electric capacity (C3) and also it is in series with between the outfan of the second operational amplifier (8) and its in-phase input end
Four resistance (R4)；Also upper with the 5th resistance (R5) of the outfan of described the second operational amplifier (8)
End connects, the lower end of the 5th resistance (R5) and the inverting input of the second operational amplifier (8) and the 6th electricity
The upper end of resistance (R6) is simultaneously connected with；Described the 3rd resistance (R3), the second electric capacity (C2) and the 6th resistance
(R6) lower end and the inverting input of the second operational amplifier (8) ground connection simultaneously；The second described electric capacity
(C2) lower end of upper end and the 3rd electric capacity (C3) even with the outfan of the first operational amplifier (7) simultaneously
Connect；The lower end of the 5th described resistance (R5) is simultaneously electric with threshold voltage with the upper end of the 6th resistance (R6)
Road (3) connects；The positive and negative power end of described the second operational amplifier (8) is also associated with 12V power supply.
Nearly electric induction formula post the most according to claim 3 employee's card, it is characterised in that: described announcement
Alert circuit (4) includes "AND" circuit (9), and an input of "AND" circuit (9) is through the 4th electric capacity (C4)
Being connected with threshold voltage circuit (3), another input is through the 7th resistance (R7) ground connection, "AND" circuit
(9) outfan is connected with alarm (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192929.3U CN205563934U (en) | 2016-03-14 | 2016-03-14 | Nearly electric induction formula post employee's card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620192929.3U CN205563934U (en) | 2016-03-14 | 2016-03-14 | Nearly electric induction formula post employee's card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205563934U true CN205563934U (en) | 2016-09-07 |
Family
ID=56816831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620192929.3U Expired - Fee Related CN205563934U (en) | 2016-03-14 | 2016-03-14 | Nearly electric induction formula post employee's card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205563934U (en) |
-
2016
- 2016-03-14 CN CN201620192929.3U patent/CN205563934U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20200314 |