CN201203922Y - Mobile phone used as alarm - Google Patents

Abstract

The utility model discloses a mobile phone used as alarm, including a detection module for detecting an area, a signal processing module for processing electrical signals outputted from the detection module, and an alarm module for giving an alarm of an alarm signal outputted by the signal processing module. The detection module includes a Fresnel lens and an infrared heat-releasing electric sensor, wherein the Fresnel lens refracts or reflexes a heat-releasing infrared signal entering into a detection area, to the infrared heat-releasing electric sensor, the infrared heat-releasing electric sensor transforms the heat-releasing infrared signal into an electrical signal which can implement infrared detection to a mobile target in the detection area and give an alarm. The utility model can ensure a mobile phone to have alarm function by means of adding hardware and modifying software, and cost is low and technology implementation is simple.

Description

Mobile phone as alarm

Technical field

The utility model relates to a kind of initiatively portable digital product of warning function that has, and more specifically, relates to a kind of mobile phone as alarm.

Background technology

The cover system device that conventional warning facility is made up of many equipment, the big device of volume is many, and cost is high is inconvenient to carry, even portable small and exquisite safety alarm equipment is also few and expensive.

The utility model content

The purpose of the utility model embodiment has been to provide a kind of mobile phone as alarm, also reports to the police by the moving target in the search coverage being carried out infrared acquisition, thereby makes warning device portable small and exquisite, with low cost.

For reaching this purpose, be used as the mobile phone of alarm among the utility model embodiment, this mobile phone comprises: the detecting module that search coverage is surveyed, the signal processing module that the electric signal of detecting module output is handled and the alarm module that the alerting signal of signal processing module output is reported to the police, detecting module comprises Fresnel Lenses and pyroelectric infrared sensor, Fresnel Lenses wherein, the heat that enters search coverage is released the infrared signal refraction or reflexed to pyroelectric infrared sensor, pyroelectric infrared sensor is released infrared signal with heat and is changed electric signal into.

Preferably, above-mentioned pyroelectric infrared sensor comprises two pyroelectricity units of serial or parallel connection, and the electric polarization direction of two pyroelectricity units is opposite.

Preferably, above-mentioned portable mobile termianl is a mobile phone, and signal processing module comprises: the electric signal of detecting module output is carried out the amplifying signal amplifier, is the digital to analog converter of digital signal with electrical signal conversion and digital signal handled and the mobile phone base band chip of output alarm information.

Preferably, above-mentioned alarm module is the information automatic sender, warning message is started automatically to predetermined terminal device, or send the loudspeaker of chimes of doom or send the motor of the vibration of reporting to the police, or the camera that search coverage is made a video recording.

Preferably, above-mentioned signal amplifier is made of transistor amplifier.

The utility model embodiment adopts the increase hardware device, has warning function even revise these articles for daily use of way mobile phone of software, and portable small and exquisite, cost is low, and technology realizes simple.

Other features and advantages of the utility model will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the utility model.The purpose of this utility model and other advantages can realize and obtain by specifically noted structure in the instructions of being write, claims and accompanying drawing.

Description of drawings

Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of instructions, is used from explanation the present invention with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawings:

Fig. 1 shows the principle of work block diagram of the utility model as the mobile phone embodiment of alarm;

Fig. 2 shows the circuit theory diagrams of the utility model as the signal processing module of the mobile phone embodiment of alarm; And

Fig. 3 shows the use synoptic diagram of the utility model as the mobile phone embodiment of alarm.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.

Fig. 1 shows the principle of work block diagram of the utility model as the mobile phone embodiment of alarm.As shown in Figure 1, the mobile phone as alarm of the present utility model comprises detectingmodule 100,signal processing module 200 and alarm module 300.Wherein, 100 pairs of detections of a target of detecting module are surveyed, and the electric signal of 200 pairs of detecting modules of signal processing module, 100 outputs is handled and output alarm signal, andalarm module 300 receives alerting signal, reports to the police.Wherein, detectingmodule 100 comprises FresnelLenses 110 andpyroelectric infrared sensor 120.

Wherein, detecting module comprises FresnelLenses 110 and pyroelectricinfrared sensor 120 for 100 li.Fresnel Lenses (Fresnel lens) the 110th is annotated the thin slice that pressure forms by polyolefine material, lens surface simultaneously is the light face, the another side imprinting has ascending concentric circles, its texture utilizes interference of light and disturbs and penetrate and require to design according to relative sensitivity and receiving angle, Fresnel Lenses 110 effects have two: the one, focus on, and soon heat is released the infrared signal refraction or is reflected on the pyroelectric infrared sensor (PIR); Effect in addition is to release infrared signal be divided into several area pellucidas and dark space in the search coverage, make the heat that the mobile object that enters search coverage can change with the form of temperature variation on pyroelectric infrared sensor (PIR).Another device is a pyroelectric infrared sensor (PIR) 120, it is made up of ceramic oxide or piezolectric crystal unit, make electrode on two surfaces of element, when temperature has the variation of Δ T in the sensor monitors scope, pyroelectric effect can produce electric charge Δ Q on two electrodes, promptly produce faint voltage Δ V between two electrodes.Because output impedance is high, has a field effect transistor to carry out impedance conversion in pyroelectric infrared sensor (PIR).

Pyroelectric infrared sensor (PIR) 120 can be that the infrared signal change transitions between 8～12um is an electric signal with wavelength, and will be inhibited to the white light signal of occurring in nature.Pyroelectric infrared sensor (PIR) 120 adopts two polyphone or pyroelectricity units in parallel mutually usually, and two electric polarization directions making are just in time opposite, ambient background radiation is released element to two heat and is almost had identical effect, make its generation release electrical effect and cancel out each other, so the output of detector no signal.But when two heat differences that pyroelectricity unit receives, pyroelectricity is also different, can not offset, and just produces signal output.

Fig. 2 shows the circuit theory diagrams of the utility model as thesignal processing module 200 of the mobile phone embodiment of alarm.Among the figure, PIR represents pyroelectric infrared sensor, and Vcc1 represents power supply 1 (just), and Vcc2 represents power supply 2 (just), and ADC represents digital to analog converter, GND represent power supply ().As shown in the figure,signal processing module 200 comprisessignal amplifier 210, digital to analog converter (ADC) 220 and mobile phone base band chip 230.Wherein,signal amplifier 210 is made oftransistor amplifier 210, be converted to digital signal after simulating signalprocess signal amplifier 210 amplifications by detecting module output, through the processing of mobile phonebase band chip 230, output alarm information is given the alarm module (not shown).

In the utility model,alarm module 300 comprises information automatic sender (the automatic router of information), camera, loudspeaker and motor.The automatic router of information can send to warning message default number.

Below in conjunction with Fig. 3 principle of the present utility model is described further.

At nature, any object that is higher than absolute temperature (273 ℃) all will produce infrared spectrum, the object of different temperatures, and the wavelength of the infrared energy of its release is different, so infrared wavelength is relevant with the height of temperature.

Human body all has constant body temperature, and generally about 37 ℃, so the people knows from experience the infrared ray about emission specific wavelength 10um, pyroelectric infrared sensor (PIR) is exactly to carry out work by the infrared ray of the 8～12um that surveys the human body emission.As shown in Figure 3, also the direction of motion relation with the people is very big for the sensitivity of 120 pairs of human bodies of pyroelectric infrared sensor (PIR).Pyroelectric infrared sensor (PIR) is least responsive for moving radially reaction, and moves sensitivity the most for transverse direction (promptly vertical with radius direction) X, and therefore the zone of monitoring is a transverse direction.

When the utility model was applied to mobile phone, this alarm mobile phone was reported to the police by the temperature contrast aftertreatment of inducing moving objects and background object.Behind the menu unlatching anti-theft alarm function by mobile phone, the pyroelectric infrared sensor (PIR) 120 of mobile phone is aimed at guarded regions, in the security area, when no human body moves, the just ambient temperature that pyroelectric infrared sensor (PIR) 120 is sensed; In a single day the people enters in the search coverage, and the infrared ray of 8～12um of human body radiation gathers on the pyroelectric infrared sensor (PIR) after strengthening by Fresnel Lenses 110.

Pyroelectric infrared sensor (PIR) will lose charge balance when sensing the difference signal of human body temperature and ambient temperature, outwards discharge electric charge, the simulating signal of output is converted to digital signal after amplifying, through the processing of mobile phone base band chip, output information is given alarm module.At this moment, initiatively warning device can as telephonograph or short message, send to the number of appointment with predefined warning message, even 110 command centres; Have shooting and sound-recording function as mobile phone, can also record evidence of crime get off.

Obviously, the utility model is revised software and can be made these articles for daily use of mobile phone have warning function by increasing hardware device, and cost is extremely low, and technology realizes very simple.

Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes, variation and omission.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (7)

1. mobile phone as alarm, it is characterized in that, described mobile phone comprises: the detecting module that search coverage is surveyed, the signal processing module that the electric signal of described detecting module output is handled and the alarm module of reporting to the police according to the alerting signal of described signal processing module output, described detecting module comprises Fresnel Lenses and pyroelectric infrared sensor, wherein

Described Fresnel Lenses is released the heat that enters search coverage the infrared signal refraction or is reflexed to described pyroelectric infrared sensor,

Described pyroelectric infrared sensor is released infrared signal with described heat and is changed electric signal into.

2. the mobile phone as alarm according to claim 1 is characterized in that described pyroelectric infrared sensor comprises two pyroelectricity units of serial or parallel connection, and the electric polarization direction of described two pyroelectricity units is opposite.

3. the mobile phone as alarm according to claim 1 and 2, it is characterized in that described signal processing module comprises: the electric signal of detecting module output is carried out the amplifying signal amplifier, is the digital to analog converter of digital signal with described electrical signal conversion and digital signal handled and the mobile phone base band chip of output alarm information.

4. the mobile phone as alarm according to claim 3 is characterized in that described alarm module comprises transmitter, and described warning message is started automatically to predetermined terminal device.

5. the mobile phone as alarm according to claim 3 is characterized in that, described alarm module comprises the loudspeaker that send chimes of doom or sends the motor of the vibration of reporting to the police.

6. the mobile phone as alarm according to claim 3 is characterized in that described mobile phone comprises the camera that search coverage is made a video recording.

7. the mobile phone as alarm according to claim 3 is characterized in that described signal amplifier is made of transistor amplifier.

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