A kind of microwave leakage protecting, monitoring device
Technical field
The utility model is a kind of microwave leakage protecting, monitoring device, belongs to the innovative technology of microwave leakage protecting, monitoring device.
Background technology
Microwave has features such as rectilinearity, reflectivity, absorbability and penetrability, and its superiority more and more is familiar with by people, and it is used more and more widely.Wherein microwave technology has obtained using on the bituminous pavement recovery technique, but when utilizing the directly positive irradiation of microwave that bituminous pavement is heated, because the difference of shielding material, structure, after firing equipment uses a period of time, expanded by heating shrinkages such as the strip of paper used for sealing of its equipment, shielding, shell, multiple factor affecting such as working strength, number of times, microwave leakage (GB 10436 standard codes that will exceed standard, the microwave average power density that allows to leak is 50 microwatt/square centimeters), what have is comparatively serious, and the microwave average power density of leakage can reach hundreds of microwatts; Overproof several times to tens times.Because microwave wavelength is shorter, penetration capacity is strong especially, can produce bigger harm to human body, especially people are directly facing in the contaminated environment of microwave radiation, can cause headache, alopecia, insomnia, weak, poor appetite, bradycardia or overrun, multiple bad reaction and symptoms such as elevation of blood pressure or reduction, directly influence the healthy of people.
Summary of the invention
The purpose of this utility model is to consider the problems referred to above and a kind of microwave leakage of monitoring in real time effectively is provided, to avoid the healthy microwave leakage protecting, monitoring device that works the mischief to people.The utility model is simple in structure, cost is low.
Structural representation of the present utility model as shown in Figure 1, include reference voltage regulating circuit (1), microwave signal receives and change-over circuit (2), signal contrast treatment circuit (3) and signal output apparatus (4), microwave signal receives and the input end of change-over circuit (2) receives the microwave leakage signal, the changing voltage that microwave signal receives and change-over circuit (2) is exported and the voltage of reference voltage regulating circuit (1) input to signal processing circuit (3), signal processing circuit (3) inputs to signal output apparatus (4) through the signal of comparison process, and the output signal of signal output apparatus (4) inputs to general control system (5).
Said reference voltage regulator circuit (1) includes voltage stabilizing diode D1, potentiometer W1, resistance R 1 and capacitor C 1, the plus earth of voltage stabilizing diode D1 and being connected with an end of capacitor C 1, the end of potentiometer W1 respectively, negative pole is connected with R1 and W1 respectively, and the other end of capacitor C 1 is connected with the adjustable side of potentiometer W1.
Above-mentioned microwave signal receives and change-over circuit (2) includes detector diode DIODE, resistance R 2, resistance R 3, resistance R 4, capacitor C 2 and capacitor C 3, the positive pole of detector diode DIODE is connected with an end of resistance R 3, negative pole is connected with an end of resistance R 2, resistance R 4, capacitor C 2 and capacitor C 3 are connected in parallel between the other end of the other end of resistance R 3 and resistance R 2, detector diode DIODE receives microwave signal and is transformed into voltage signal by resistance R 3 and resistance R 2, and by being sent to signal contrast treatment circuit (3) after resistance R 4, capacitor C 2, capacitor C 3 filtering.
Resistance R 2 in above-mentioned microwave signal reception and the change-over circuit (2) is identical with the resistance of resistance R 3.
Above-mentioned signal contrast treatment circuit (3) includes voltage signal process chip U1, power supply termination+12V voltage of U1, the positive terminal of signal input is connected with reference voltage regulating circuit (1), the negative pole end of signal input receives with microwave signal and change-over circuit (2) is connected, and signal output part is connected with signal output apparatus (4).
Above-mentioned signal output apparatus (4) includes triode T1, light emitting diode D2, diode D3, diode D4, resistance R 5, resistance R 6, resistance R 7 and resistance R 8; The emitter of triode T1 is connected with power supply, and the base stage of triode T1 is connected with R6, and the collector of triode T1 is connected with resistance R 7, and resistance R 7 is connected with the positive pole of light emitting diode D2, the minus earth of light emitting diode D2, and resistance R 8 plays current limliting.
The interface 1 of above-mentioned signal output apparatus (4) is connected with dc power anode, and output interface 2 is connected with general control system (5), and interface 3 is connected with the negative pole of 12V direct supply.
The utility model is owing to adopt the structure that includes reference voltage regulating circuit, microwave signal reception and change-over circuit, signal contrast treatment circuit and signal output apparatus, microwave signal receives and change-over circuit receives the microwave leakage signal, and convert thereof into voltage output, the comparer that the voltage of output and the voltage of reference voltage circuit are transported to signal processing circuit compares and handles, at last by signal output apparatus with comparative result to the general control system output signal, (5mW/cm when microwave leakage meets or exceeds margin of safety
2), detection system detects microwave leakage and exceeds standard, and sends luminous warning indication in the signal entering signal output circuit that sends, and signal also can send signal to general control system, and equipment quits work.Therefore, the utility model is monitored microwave leakage effectively in real time, the healthy of people is worked the mischief avoiding.The utility model is simple in structure, cost is low, is that a kind of design is ingenious, function admirable, convenient and practical microwave leakage protecting, monitoring device.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model;
Fig. 3 makes the structural representation that circuit board (7) is installed in mounting box (6) for the utility model;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the vertical view of Fig. 3.
Embodiment
Embodiment:
Theory diagram of the present utility model as shown in Figure 1, include reference voltage regulating circuit 1, microwave signal reception and change-over circuit 2, signal contrast treatment circuit 3 and signal output apparatus 4, microwave signal receives and the input end of change-over circuit 2 receives the microwave leakage signal, the changing voltage that microwave signal receives and change-over circuit 2 is exported and the voltage of reference voltage regulating circuit 1 input to signal processing circuit 3, signal processing circuit 3 inputs to signal output apparatus 4 through the signal of comparison process, and the output signal of signal output apparatus 4 inputs to general control system 5.
Circuit diagram of the present utility model as shown in Figure 2, said reference voltage regulator circuit 1 includes voltage stabilizing diode D1, potentiometer W1, resistance R 1 and capacitor C 1, the plus earth of voltage stabilizing diode D1 and being connected with an end of capacitor C 1, the end of potentiometer W1 respectively, negative pole is connected with R1 and W1 respectively, and the other end of capacitor C 1 is connected with the adjustable side of potentiometer W1.
Above-mentioned microwave signal receives and change-over circuit 2 includes detector diode DIODE, resistance R 2, resistance R 3, resistance R 4, capacitor C 2 and capacitor C 3, the positive pole of detector diode DIODE is connected with an end of resistance R 3, negative pole is connected with an end of resistance R 2, resistance R 4, capacitor C 2 and capacitor C 3 are connected in parallel between the other end of the other end of resistance R 3 and resistance R 2, detector diode DIODE receives microwave signal and is transformed into voltage signal by resistance R 3 and resistance R 2, and by being sent to signal contrast treatment circuit 3 after resistance R 4, capacitor C 2, capacitor C 3 filtering.
Resistance R 2 in above-mentioned microwave signal reception and the change-over circuit 2 is identical with the resistance of resistance R 3.
Above-mentioned signal contrast treatment circuit 3 includes voltage signal process chip U1, power supply termination+12V voltage of U1, the positive terminal of signal input is connected with reference voltage regulating circuit 1, the negative pole end of signal input receives with microwave signal and change-over circuit 2 is connected, and signal output part is connected with signal output apparatus 4.
Above-mentioned signal output apparatus 4 includes triode T1, light emitting diode D2, diode D3, diode D4, resistance R 5, resistance R 6, resistance R 7 and resistance R 8; The emitter of triode T1 is connected with power supply, and the base stage of triode T1 is connected with R6, and the collector of triode T1 is connected with resistance R 7, and resistance R 7 is connected with the positive pole of light emitting diode D2, the minus earth of light emitting diode D2, and resistance R 8 plays current limliting.
The interface 1 of above-mentioned signal output apparatus 4 is connected with dc power anode, and output interface 2 is connected with general control system 5, and interface 3 is connected with the negative pole of 12V direct supply.
The utility model is made structural representation that circuit board 7 is installed in mounting box 6 as shown in Figure 3, left view as shown in Figure 4, vertical view is as shown in Figure 5.
The utility model is before installation, with 5mW/cm
2The good reference voltage of standard adjustment; During work, when running into the micro-wave screening effect when undesirable, a certain amount of radiation takes place in microwave, when radiant quantity reaches a certain setting value, such as 5mW/cm
2Microwave signal receives and change-over circuit receives this signal, and with its changing voltage output, the comparer that the voltage of output and the voltage of reference voltage circuit are transported to signal processing circuit compares, handle relatively, at last by signal output apparatus with comparative result to the general control system output signal, (5mW/cm when microwave leakage meets or exceeds margin of safety
2), detection system detects microwave leakage and exceeds standard, and the light emitting diode in the signal entering signal output circuit that sends sends luminous warning indication, and signal also can import into to general control system and send signal, and equipment quits work.Like this, prevented that the situation of microwave leakage from taking place, and effectively guaranteed operating personnel's personal safety.