CN2625908Y

CN2625908Y - Electromagnetic wave detector

Info

Publication number: CN2625908Y
Application number: CN 03255327
Authority: CN
Inventors: 陈仁华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-03
Filing date: 2003-07-03
Publication date: 2004-07-14
Anticipated expiration: 2013-07-03

Abstract

An electromagnetic wave detector is characterized in comprising a signal receiving circuit, a signal comparing circuit, a monomorph chip microcomputer (MPU), an alarming circuit, a driving circuit, a display circuit; the signal output of the receiving circuit is connected with the checking end of the monomorph chip microcomputer (MPU), the output of the comparing circuit is connected with the I/O inlet of the monomorph chip microcomputer (MPU), the output of the monomorph chip microcomputer (MPU) is respectively connected with the alarming circuit, the driving circuit and the display circuit, the driving circuit is respectively connected with the alarming circuit and the display circuit; the utility model adopts the monomorph chip microcomputer MPU to process the working condition of the whole machine, which greatly simplifies the circuit structure and the machine volume and has the advantages of convenient use and carrying, rapid executing speed and good practicality etc.

Description

The Electromagnetic Wave Detection instrument

Technical field

The utility model relates to a kind of Electromagnetic Wave Detection instrument, especially a kind of easy intelligentized Electromagnetic Wave Detection instrument.

Background technology

Along with the develop rapidly of communications industry, the increase of electromagnetic wave amount has brought increasing influence to the health of human body, and people need know whether the electromagnetic wave amount of its surrounding environment exceeds standard.Existing Electromagnetic Wave Detection instrument complex structure, volume is big, and intelligent degree is poor, and price is expensive, is difficult to popularize use.

Summary of the invention

The utility model purpose is to provide a kind of intelligentized Electromagnetic Wave Detection instrument of easy to use, simple structure, to overcome the defective that existing Electromagnetic Wave Detection instrument exists.

For achieving the above object, the Electromagnetic Wave Detection instrument that the utility model provides comprises signal receiving circuit, signal comparator circuit, single-chip micro computer MPU, warning circuit, driving circuit, display circuit, the signal output part order wafer micro computer MPU test side of receiving circuit, the I/O mouth of the output terminal order wafer micro computer MPU of comparator circuit, the output terminal of single-chip micro computer MPU is circuit taking alarm, driving circuit and display circuit respectively, and driving circuit is circuit taking alarm and display circuit respectively.

Receiving circuit is sent the electromagnetic wave signal that receives into single-chip micro computer MPU test side; The synchronous signal comparator circuit compares the power of signal, and the result is sent to the I/O mouth of MPU; The single-chip micro computer is according to the signal that signal receiving circuit and signal comparator circuit import into, handles accordingly and the result is outputed to warning circuit, driving circuit and display circuit; Warning circuit is worked after receiving the signal of MPU and driving circuit input, gives the alarm when diamagnetic ripple signal input; Driving circuit drives display circuit and warning circuit by the MPU input signal; The signal that display circuit receives the output of MPU and driving circuit shows the electromagnetic wave amount under the current environment.

Advantages such as the utility model adopts single-chip micro computer MPU to handle the duty of complete machine, has simplified circuit structure and machine volume greatly, has use, easy to carry, and execution speed is fast, and is practical.

Below in conjunction with drawings and Examples technology contents of the present utility model is further described.

Description of drawings

Fig. 1 is the circuit block diagram of the utility model Electromagnetic Wave Detection instrument.

Fig. 2 is the electrical schematic diagram of the utility model signal receiving circuit.

Fig. 3 is the electrical schematic diagram of the utility model signal comparator circuit.

Fig. 4 is the electrical schematic diagram of the utility model micro computer MPU circuit.

Fig. 5 is the electrical schematic diagram of the utility model warning circuit.

Fig. 6 is the electrical schematic diagram of the utility model driving circuit.

Fig. 7 is the electrical schematic diagram of the utility model display circuit.

Fig. 8 is the electrical schematic diagram of the utility model power circuit.

Embodiment

As shown in Figure 1, the Electromagnetic Wave Detection instrument that the utility model provides comprises signal receiving circuit, signal comparator circuit, single-chip micro computer MPU, warning circuit, driving circuit, display circuit, the signal output part order wafer micro computer MPU test side of receiving circuit, the I/O mouth of the output terminal order wafer micro computer MPU of comparator circuit, the output terminal of single-chip micro computer MPU is circuit taking alarm, driving circuit and display circuit respectively, and driving circuit is circuit taking alarm and display circuit respectively.

As shown in Figure 2, signal receiving circuit is a special-purpose integrated circuit board, finish signal sampling by this circuit and handle,, in circuit, represent with connector J7 because this circuit is the special IC plate after photoelectrical coupler is sent to single-chip micro computer input end P16 mouth to signal.

As shown in Figure 3, signal comparator circuit is by inductive coil L, resistance R 40-R49, and capacitor C 7-C10, diode D21, comparer LM339, operational amplifier LM358 forms.Signal receives through inductive coil, and inductive coil and capacitor C 7 are coupled into voltage signal through operational amplifier LM358 with signal, amplifies to export comparer LM339 to, and four ports of single-chip micro computer MPU sent into comparative result output by comparer.

As shown in Figure 4, the single-chip micro computer adopts 89351 microcomputers, and it is handled signal in microcomputer inside accordingly according to the signal that receiving circuit and signal comparator circuit transmit, and again result is sent into other three working cells: warning circuit, display circuit, driving circuit.The MPU circuit also comprises the external circuit of single-chip micro computer in addition, comprises by crystal oscillator X12 having formed outside oscillatory circuit, for CPU provides required frequency of operation; By capacitor C 2, resistance R 21 has been formed CPU external reset circuit.

As shown in Figure 5, warning circuit is by passive hummer BZ1, and resistance R 37 is formed, and when MPU has detected the anti-electromagnetic wave signal, makes hummer send alarm by the driving circuit output signal that is made of triode A952.Adopt passive hummer, have the saving electric energy, can receive lower feeble signal.

As shown in Figure 6, driving circuit is made up of many groups resistance and triode A952, and transistor base connects the I/O mouth of MPU, and emitter connects display circuit and warning circuit, and collector connects power supply, is used for driving display and alarm.

As shown in Figure 7, display circuit is made up of different luminous two pipes of rice font display and high-luminance colour, and driving circuit output signal and MPU output signal make display and luminotron shinny.Display shows be current environment under the demonstration of electromagnetic wave amount luminotron then be certain acupuncture point of anti-electromagnetic wave human body that device is protected., display circuit adopts the dynamic demonstration not only can saves energy but also can save element, so just can reach and save the wiring board volume, accomplishes that layout is more reasonable, purpose attractive in appearance.

As shown in Figure 8, power circuit provides power supply for circuit, and diode D1 is arranged, and D2, resistance R 28 and power switch K1 form, and this circuit provides two kinds of input dc power modes, and J4 in the circuit, J9 are two connectors of power supply.Adopt the duplicate supply mode promptly can adopt direct placement dry cell, also can external direct supply behind rectifying and wave-filtering, can effectively guarantee the power supply of the operate as normal of instrument like this.

Claims

1, a kind of Electromagnetic Wave Detection instrument, comprise signal receiving circuit and display circuit, it is characterized in that also comprising signal comparator circuit, single-chip micro computer (MPU), warning circuit, driving circuit, signal output part order wafer micro computer (MPU) test side of receiving circuit, the I/O mouth of the output terminal order wafer micro computer (MPU) of comparator circuit, the output terminal of single-chip micro computer (MPU) is circuit taking alarm, driving circuit and display circuit respectively, and driving circuit is circuit taking alarm and display circuit respectively.

2, Electromagnetic Wave Detection instrument according to claim 1, feature are that signal receiving circuit is a special-purpose integrated circuit board, finish the signal sampling processing after photoelectrical coupler is sent to single-chip micro computer input end (P16) mouth to signal by this circuit.

3, Electromagnetic Wave Detection instrument according to claim 1, feature is that signal comparator circuit is by inductive coil (L), resistance (R40-R49), electric capacity (C7-C10), diode (D21), comparer (LM339), operational amplifier (LM358) is formed, and signal receives through inductive coil, and inductive coil and capacitor C 7 are coupled into voltage signal through operational amplifier with signal, amplification exports comparer to, and four ports of single-chip micro computer (MPU) sent into comparative result output by comparer.

4, Electromagnetic Wave Detection instrument according to claim 1, feature are that warning circuit is made up of passive hummer (BZ1) and resistance (R37).

5, Electromagnetic Wave Detection instrument according to claim 1, feature is that driving circuit is made up of many groups resistance and triode (A952), and transistor base connects the I/O mouth of (MPU), and emitter connects display circuit and warning circuit, collector connects power supply, is used for driving display and alarm.

6, Electromagnetic Wave Detection instrument according to claim 1, feature are that display circuit is made up of rice font display and different luminous two pipes of high-luminance colour.