CN205428093U

CN205428093U - Museum historical relic electronic monitoring system

Info

Publication number: CN205428093U
Application number: CN201620198962.7U
Authority: CN
Inventors: 杨露萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-03-08
Filing date: 2016-03-08
Publication date: 2016-08-03
Anticipated expiration: 2026-03-08

Abstract

The utility model discloses a museum historical relic electronic monitoring system, including master control CPU, ultrasonic transmitter, ultrasonic wave receiving circuit, power module, acousto -optic warning module, miniature camera head and time -recorder, master control CPU connects ultrasonic transmitter, ultrasonic wave receiving circuit, power module, acousto -optic warning module, miniature camera head and time -recorder respectively. The utility model discloses museum historical relic electronic monitoring system adopts the singlechip as the obs core control component, utilizes the ultrasonic wave to carry out the regionalized control, and acousto -optic warning will be sent by trigger system in the region as long as someone gets into the control, opens the camera simultaneously, still has the function that the timing was closed, effectively reduces the loss of system, thus have with low costs, the function is various and long service life's advantage.

Description

A kind of Cultural relics in museum anti-theft monitoring system

Technical field

This utility model relates to a kind of anti-thefting monitoring circuit, specifically a kind of Cultural relics in museum anti-theft monitoring system.

Background technology

Museum is classical collection, display and study the place in kind representing nature and Human Cultural Heritage, and the country and people masses are had great importance by its interior collection, and how preservation its interior collection good is the core of Museum Construction.Large-scale museum, its interior collection burglary-resisting system is the most perfect, but structure is complicated, need professional's I&M, and cost is high, long-term non-stop run, cause its service life low, and medium and small museum is due to the restriction of place, funds etc., cannot mounting structure is complicated, cost is high safety system, therefore mostly the medium and small museum of many of our country is to guard collection with personnel at present, thus there is many artificial drawbacks, makes collection lose such as the carelessness of staff or staff defalcates.

Utility model content

The purpose of this utility model is to provide a kind of Cultural relics in museum anti-theft monitoring system, with the problem solving to propose in above-mentioned background technology.

For achieving the above object, the following technical scheme of this utility model offer:

A kind of Cultural relics in museum anti-theft monitoring system, receiving circuit, power module, sound and light alarm module, minisize pick-up head and timer including master cpu, ultrasonic transmitter, ultrasound wave, described master cpu connects ultrasonic transmitter respectively, ultrasound wave receives circuit, power module, sound and light alarm module, minisize pick-up head and timer；

nullDescribed ultrasound wave receives circuit and includes ultrasonic transducer A、Chip IC 1 and resistance R1，One end of resistance R1 connects resistance R8、The fixing end of of potentiometer RP1 and power supply VCC，The other end of resistance R1 connects resistance R2、The pin 3 of ultrasonic transducer A and chip IC 1，The other end of ultrasonic transducer A connects the other end of resistance R2、Electric capacity C1、Electric capacity C2、Electric capacity C3、Resistance R9 and the negative electrode of diode D2，The other end of electric capacity C1 connects resistance R3，The other end of resistance R3 connects resistance R4 and the pin 1 of chip IC 1，The other end of resistance R4 connects pin 4 and the pin 3 of chip IC 2 of chip IC 1，The other end of electric capacity C2 connects resistance R5，The other end of resistance R5 connects resistance R6 and the pin 1 of chip IC 2，The other end of resistance R4 connects pin 4 and the negative electrode of diode D1 of chip IC 2，The anode of diode D1 connects resistance R7，The other end of resistance R7 connects the other end of electric capacity C3、The other end of resistance R8 and the pin 1 of chip IC 3，Another fixing end of potentiometer RP1 connects the other end and the pin 3 of chip IC 3 of resistance R9，The pin 4 of chip IC 3 connects resistance R10 and output signal outfan OUT，The other end of resistance R10 connects the anode of diode D2，Described chip IC 1、The model of chip IC 2 and chip IC 3 is LM321.

As preferred version of the present utility model: described master cpu selects AT89 series monolithic.

As preferred version of the present utility model: described sound and light alarm module is made up of light emitting diode and high loudness loudspeaker.

Compared with prior art, the beneficial effects of the utility model are: this utility model Cultural relics in museum anti-theft monitoring system uses single-chip microcomputer to control element as core, ultrasound wave is utilized to carry out compartmentalization monitoring, as long as someone enters monitoring, region will be triggered system and sent sound and light alarm, open photographic head simultaneously, also there is the function that timing is closed, effectively reduce the loss of system, therefore there is low cost, diverse in function and the advantage of length in service life.

Accompanying drawing explanation

Fig. 1 is the system block diagram of Cultural relics in museum anti-theft monitoring system；

Fig. 2 is the circuit diagram that ultrasound wave receives circuit.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

Refer to Fig. 1,2, a kind of Cultural relics in museum anti-theft monitoring system, receiving circuit, power module, sound and light alarm module, minisize pick-up head and timer including master cpu, ultrasonic transmitter, ultrasound wave, described master cpu connects ultrasonic transmitter respectively, ultrasound wave receives circuit, power module, sound and light alarm module, minisize pick-up head and timer；

Master cpu selects AT89 series monolithic.Sound and light alarm module is made up of light emitting diode and high loudness loudspeaker.

Operation principle of the present utility model is: the ultrasound wave that the chip AD8950 within ultrasonic transmitter sends is received by the ultrasonic transducer A in Fig. 2, ultrasound wave receives the prestage of circuit and is formed two-stage high gain amplifier by IC1, IC2, and the ultrasonic reflections signal received ultrasound wave reception transducer A in advance carries out two-stage amplification.Amplification output signal, after diode D1 detection, enters the filter circuit being made up of C3 and R7, bypasses environment instantaneous noise (clutter) and ultrasound wave fundamental frequency in supersonic region, only takes out the negative level of reflected signal.This negative level delivers to the comparator inverting input being made up of IC3, after comparing with positive terminal reference level, exports positive pulse.Also will less rule reflected signal, it is shaped to the most regular start pulse signal, light emitting diode D1 lights simultaneously, this pulse signal transmission is in master cpu, input signal is processed by master cpu by its internal coding, decoder, and open sound and light alarm module and minisize pick-up head, on the one hand sound and light alarm is sent, on the other hand record monitored picture information, the work of timer unlatching simultaneously, if simply false triggering, whole system is automatically switched off through after a period of time, reaches energy saving and reduces the purpose of equipment loss.

Claims

1. a Cultural relics in museum anti-theft monitoring system, circuit, power module, sound and light alarm module, minisize pick-up head and timer is received including master cpu, ultrasonic transmitter, ultrasound wave, it is characterized in that, described master cpu connects ultrasonic transmitter respectively, ultrasound wave receives circuit, power module, sound and light alarm module, minisize pick-up head and timer；

A kind of Cultural relics in museum anti-theft monitoring system the most according to claim 1, it is characterised in that described master cpu selects AT89 series monolithic.

A kind of Cultural relics in museum anti-theft monitoring system the most according to claim 1, it is characterised in that described sound and light alarm module is made up of light emitting diode and high loudness loudspeaker.