CN202854349U - Detection device detecting whether mobile phone is carried - Google Patents
Detection device detecting whether mobile phone is carried Download PDFInfo
- Publication number
- CN202854349U CN202854349U CN 201220366047 CN201220366047U CN202854349U CN 202854349 U CN202854349 U CN 202854349U CN 201220366047 CN201220366047 CN 201220366047 CN 201220366047 U CN201220366047 U CN 201220366047U CN 202854349 U CN202854349 U CN 202854349U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- amplifier
- diode
- connects
- 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
Links
Images
Abstract
The utility model provides a detection device detecting whether a mobile phone is carried. The device is characterized by comprising a RF diode, a pre-amplification transistor, an operational amplifier, a gain potentiometer, a volume control potentiometer, a power amplifier, a loudspeaker and a voltage divider formed by a fourth resistor and a fifth resistor. An end of the RF diode is connected with an antenna, and the other end is connected with the pre-amplification transistor. The pre-amplification transistor is connected with the operational amplifier. An end of the operational amplifier is connected with the gain potentiometer and the volume control potentiometer, and the other end is connected with the voltage divider. The volume control potentiometer is connected with the power amplifier. The power amplifier is connected with the loudspeaker. The detection device is reasonable in structure, obvious in effect, and is beneficial for popularization and application.
Description
Technical field
The utility model relates to the whether sniffer of carrying mobile phone of a kind of inspection, and it is applied to the non-contact detecting field.
Background technology
Development along with science and technology, popularizing of mobile communication, some do not allow to use the place of mobile phone more and more many, and the means that check at present are, utilize the method for hand-held metal detector that everyone is detected, run into metal object and just report to the police, people's mobile phone shutdown has been arranged, detector is still reported to the police, and this uncultivated way is disliked the people.
Summary of the invention
The utility model purpose: the utility model provides the whether sniffer of carrying mobile phone of a kind of inspection, its objective is the undesirable problem of mode effect of solution detection of handset in the past.
Technical scheme: the utility model is achieved through the following technical solutions:
Whether a kind of inspection the sniffer of carrying mobile phone, it is characterized in that: this device mainly comprises rf diode D1, preposition amplifier transistor T1, operational amplifier IC1, gain potentiometer VR1, volume control potentiometer VR2, power amplifier IC2, loudspeaker LS1 and the voltage divider that is made of the 4th resistance R 4 and the 5th resistance R 5; Rf diode D1 connects antenna on the one hand, be connected on the other hand preposition amplifier transistor T1, preposition amplifier transistor T1 concatenation operation amplifier IC1, operational amplifier IC1 connects gain potentiometer VR1 and volume control potentiometer VR2 on the one hand, connect on the other hand voltage divider, volume control potentiometer VR2 connects power amplifier IC2, and power amplifier IC2 connects loudspeaker LS1.
The diode, electric capacity and the resistance that also comprise other in this device, wherein rf diode D1 connects the first capacitor C 1, the first capacitor C 1 and connects the 7th resistance R 7, the seven resistance R 7 and be connected to power amplifier IC2 by the 7th capacitor C 7.
The second capacitor C 2 one ends are connected between rf diode D1 and the first capacitor C 1, and the other end is connected to the base stage of preposition amplifier transistor T1; The first resistance R 1 one ends are connected between rf diode D1 and the antenna, and the other end is connected between the second capacitor C 2 and the preposition amplifier transistor T1; The 3rd resistance R 3 is connected to power supply on the one hand, and second resistance R of connecting on the other hand, 2, the second resistance R 2 also are connected to the base stage of preposition amplifier transistor T1; The 3rd capacitor C 3 one is connected to operational amplifier IC1 inverting input 2, and the other end is connected between the 3rd resistance R 3 and the second resistance R 2, and the utmost point electrode of preposition amplifier transistor T1 is connected to the 3rd capacitor C 3; The 4th capacitor C 4 one ends are connected to the utmost point electrode of preposition amplifier transistor T1, and the other end is connected between the first capacitor C 1 and the 7th resistance R 7.
The 4th resistance R 4 connects the 5th resistance R 5, and the normal phase input end 3 of operational amplifier IC1 is connected between the 4th resistance R 4 and the 5th resistance R 5; The transmitting terminal of operational amplifier IC1 connects the 5th capacitor C 5 and the second diode D2 successively, and the second diode D2 is connected to volume control potentiometer VR2; One of gain potentiometer VR1 is connected between the 3rd capacitor C 3 and the operational amplifier IC1, and the other end is connected between operational amplifier IC1 and the 5th capacitor C 5.
Volume control potentiometer VR2 is with in parallel with the 6th resistance R 6 again after the 6th capacitor C 6 is connected, and one is connected to power amplifier IC2 after in parallel, and the other end is connected between the first capacitor C 1 and the 7th resistance R 7.
The grounded emitter of preposition amplifier transistor T1.
Advantage and effect: in order to overcome the deficiency in the above-mentioned technology, the utility model a kind of inspection sniffer of carrying mobile phone whether, this device mainly comprises rf diode D1, preposition amplifier transistor T1, operational amplifier IC1, gain potentiometer VR1, volume control potentiometer VR2, power amplifier IC2, loudspeaker LS1 and the voltage divider that is made of the 4th resistance R 4 and the 5th resistance R 5; Rf diode D1 connects antenna on the one hand, be connected on the other hand preposition amplifier transistor T1, preposition amplifier transistor T1 concatenation operation amplifier IC1, operational amplifier IC1 connects gain potentiometer VR1 and volume control potentiometer VR2 on the one hand, connect on the other hand voltage divider, volume control potentiometer VR2 connects power amplifier IC2, and power amplifier IC2 connects loudspeaker LS1.As long as the utility model has mobile phone power-on or mobile phone to place silent mode when using, by monitoring the radio frequency level in the place, monitor the use of mobile phone, radio frequency level is increased, then can send warning at once.
Description of drawings:
Fig. 1 is structural circuit figure of the present utility model.
Embodiment: the utility model is further described below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model provides the whether sniffer of carrying mobile phone of a kind of inspection, and this device mainly comprises rf diode D1, preposition amplifier transistor T1, operational amplifier IC1, gain potentiometer VR1, volume control potentiometer VR2, power amplifier IC2, loudspeaker LS1 and the voltage divider that is made of the 4th resistance R 4 and the 5th resistance R 5; Rf diode D1 connects antenna on the one hand, be connected on the other hand preposition amplifier transistor T1, preposition amplifier transistor T1 concatenation operation amplifier IC1, operational amplifier IC1 connects gain potentiometer VR1 and volume control potentiometer VR2 on the one hand, connect on the other hand voltage divider, volume control potentiometer VR2 connects power amplifier IC2, and power amplifier IC2 connects loudspeaker LS1.
The diode, electric capacity and the resistance that also comprise other in this device, wherein rf diode D1 connects the first capacitor C 1, the first capacitor C 1 and connects the 7th resistance R 7, the seven resistance R 7 and be connected to power amplifier IC2 by the 7th capacitor C 7.
The second capacitor C 2 one ends are connected between rf diode D1 and the first capacitor C 1, and the other end is connected to the base stage of preposition amplifier transistor T1; The first resistance R 1 one ends are connected between rf diode D1 and the antenna, and the other end is connected between the second capacitor C 2 and the preposition amplifier transistor T1; The 3rd resistance R 3 is connected to power supply on the one hand, and second resistance R of connecting on the other hand, 2, the second resistance R 2 also are connected to the base stage of preposition amplifier transistor T1; The 3rd capacitor C 3 one is connected to operational amplifier IC1 inverting input 2, and the other end is connected between the 3rd resistance R 3 and the second resistance R 2, and the utmost point electrode of preposition amplifier transistor T1 is connected to the 3rd capacitor C 3; The 4th capacitor C 4 one ends are connected to the utmost point electrode of preposition amplifier transistor T1, and the other end is connected between the first capacitor C 1 and the 7th resistance R 7.
The 4th resistance R 4 connects the 5th resistance R 5, and the normal phase input end 3 of operational amplifier IC1 is connected between the 4th resistance R 4 and the 5th resistance R 5; The transmitting terminal of operational amplifier IC1 connects the 5th capacitor C 5 and the second diode D2 successively, and the second diode D2 is connected to volume control potentiometer VR2; One of gain potentiometer VR1 is connected between the 3rd capacitor C 3 and the operational amplifier IC1, and the other end is connected between operational amplifier IC1 and the 5th capacitor C 5.
Volume control potentiometer VR2 is with in parallel with the 6th resistance R 6 again after the 6th capacitor C 6 is connected, and one is connected to power amplifier IC2 after in parallel, and the other end is connected between the first capacitor C 1 and the 7th resistance R 7.
The grounded emitter of preposition amplifier transistor T1.
The utility model adopts 12V rechargeable battery powered, and the utility model is that probe designs is become a rf detector, and with rf diode D1, the first resistance R 1 and the second capacitor C 2 form together, collect the radio-frequency (RF) energy that monitors the place.Rf diode D1 is output as 0.6mV under the state of this circuit standby.If there is operating handset can send high-octane radiation, the at this moment output of rf diode D1 will be increased to 60mV.This weak signal is carried out preposition amplification through preposition amplifier transistor T1 first.Amplify being consisted of the second level by operational amplifier IC1, its normal phase input end 3 provide power supply by voltage divider the 4th resistance R 4 and the 5th resistance R 5 half as fixed bias, 2 of reverse input ends are used for accepting putting the pre-discharge signal that megacryst pipe T1 sends here in the past.And gain potentiometer VR1 is used for regulating feedback quantity and gain.Signal after secondary amplifies is delivered to volume control potentiometer VR2 through the 5th capacitor C 5 and the second diode D2 and is done volume control.Take out signal with power amplifier IC2 and give the loudspeaker warning.
Claims (1)
1. whether one kind check and it is characterized in that the sniffer of carrying mobile phone: this device mainly comprises rf diode (D1), preposition amplifier transistor (T1), operational amplifier (IC1), gain potentiometer (VR1), volume control potentiometer (VR2), power amplifier (IC2), loudspeaker (LS1) and by the voltage divider of the 4th resistance (R4) and the 5th resistance (R5) formation; Rf diode (D1) connects antenna on the one hand, be connected on the other hand preposition amplifier transistor (T1), preposition amplifier transistor (T1) concatenation operation amplifier (IC1), operational amplifier (IC1) connects gain potentiometer (VR1) and volume control potentiometer (VR2) on the one hand, connect on the other hand voltage divider, volume control potentiometer (VR2) connects power amplifier (IC2), and power amplifier (IC2) connects loudspeaker (LS1).
2, the inspection according to claim 1 sniffer of carrying mobile phone whether, it is characterized in that: rf diode in this device (D1) connects the first electric capacity (C1), the first electric capacity (C1) connects the 7th resistance (R7), and the 7th resistance (R7) is connected to power amplifier (IC2) by the 7th electric capacity (C7).
3, the inspection according to claim 2 sniffer of carrying mobile phone whether, it is characterized in that: this device also comprises the second electric capacity (C2), the second electric capacity (C2) end is connected between rf diode (D1) and the first electric capacity (C1), and the other end is connected to the base stage of preposition amplifier transistor (T1); The first resistance (R1) end is connected between rf diode (D1) and the antenna, and the other end is connected between the second electric capacity (C2) and the preposition amplifier transistor (T1); The 3rd resistance (R3) is connected to power supply on the one hand, the second resistance (R2) of connecting on the other hand, and the second resistance (R2) also is connected to the base stage of preposition amplifier transistor (T1); The 3rd electric capacity (C3) one is connected to operational amplifier (IC1) inverting input (2), and the other end is connected between the 3rd resistance (R3) and the second resistance (R2), and the utmost point electrode of preposition amplifier transistor (T1) is connected to the 3rd electric capacity (C3); The 4th electric capacity (C4) end is connected to the utmost point electrode of preposition amplifier transistor (T1), and the other end is connected between the first electric capacity (C1) and the 7th resistance (R7).
4, the inspection according to claim 3 sniffer of carrying mobile phone whether, it is characterized in that: the 4th resistance (R4) connects the 5th resistance (R5), and the normal phase input end (3) of operational amplifier (IC1) is connected between the 4th resistance (R4) and the 5th resistance (R5); The transmitting terminal of operational amplifier (IC1) connects the 5th electric capacity (C5) and the second diode (D2) successively, and the second diode (D2) is connected to volume control potentiometer (VR2); One of gain potentiometer (VR1) is connected between the 3rd electric capacity (C3) and the operational amplifier (IC1), and the other end is connected between operational amplifier (IC1) and the 5th electric capacity (C5).
5, the inspection according to claim 4 sniffer of carrying mobile phone whether, it is characterized in that: volume control potentiometer (VR2) is with in parallel with the 6th resistance (R6) again after the 6th electric capacity (C6) is connected, one is connected to power amplifier (IC2) after in parallel, and the other end is connected between the first electric capacity (C1) and the 7th resistance (R7).
6, the inspection according to claim 3 sniffer of carrying mobile phone whether is characterized in that: the grounded emitter of preposition amplifier transistor (T1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366047 CN202854349U (en) | 2012-07-27 | 2012-07-27 | Detection device detecting whether mobile phone is carried |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220366047 CN202854349U (en) | 2012-07-27 | 2012-07-27 | Detection device detecting whether mobile phone is carried |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854349U true CN202854349U (en) | 2013-04-03 |
Family
ID=47985532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366047 Expired - Fee Related CN202854349U (en) | 2012-07-27 | 2012-07-27 | Detection device detecting whether mobile phone is carried |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730594A (en) * | 2015-04-14 | 2015-06-24 | 北京博睿勤信息技术有限公司 | Mobile phone detection system |
-
2012
- 2012-07-27 CN CN 201220366047 patent/CN202854349U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730594A (en) * | 2015-04-14 | 2015-06-24 | 北京博睿勤信息技术有限公司 | Mobile phone detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201766557U (en) | Radio frequency (RF) power amplitude limiting circuit | |
| CN102445590A (en) | Current detection circuit used for judging state of an antenna | |
| CN202854349U (en) | Detection device detecting whether mobile phone is carried | |
| CN103533181A (en) | Device and method for awakening external equipment of mobile terminal | |
| CN202421281U (en) | Current detecting circuit for judging state of antenna | |
| CN104198080B (en) | Oscillatory type temperature sensor with RF radiofrequency signal as energy | |
| CN204731366U (en) | Metal-enclosed bus equipment ac voltage withstanding discharge fault positioning system | |
| CN205317771U (en) | Portable flammable gas detector | |
| CN203883774U (en) | Module for amplifying signals in transformer substation gas concentration detection system | |
| CN202696583U (en) | Multi-functional minitype frequency modulation emitter | |
| CN202013640U (en) | Detection device for leaky fire detector | |
| CN208046575U (en) | A kind of power amplifying system of intercom | |
| CN204536464U (en) | Portable circuit on-off detector | |
| CN205647935U (en) | Audio signal output device | |
| CN203434944U (en) | Low-power communication audio signal amplifier | |
| CN202956478U (en) | Online detection device for detecting health state of storage battery | |
| CN204886972U (en) | Take radio frequency to detect optical fiber amplifier of function | |
| CN204346484U (en) | Transmission line of electricity monitoring terminal and on-line monitoring system | |
| CN219036323U (en) | Leakage detection device for water supply pipeline | |
| CN216743877U (en) | Efficient and rapid water pipe water leakage detection device under ground or in wall | |
| CN202421349U (en) | Electric field strength detection circuit | |
| CN203883775U (en) | Signal amplification circuit for substation gas concentration detection system | |
| CN102944250A (en) | Front-end conditioning circuit for measuring high impedance weak signal | |
| CN203732630U (en) | Internal resistance tester of small-capacity rechargeable battery | |
| CN206402383U (en) | Power amplifying device with power control structure |
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 |
Granted publication date: 20130403 Termination date: 20140727 |
|
| EXPY | Termination of patent right or utility model |