CN2428762Y - Noise monitor - Google Patents

Abstract

The utility model relates to a noise monitor capable of monitoring noise. A signal amplifier, a rectifier, a comparator and a delay switch are connected in order, and accordingly, a sound level switch is formed, wherein, the sound level switch which is taken as a power switch is connected with a sequence circuit. The four output ends of the sequential circuit are respectively connected with four relay circuits, and the normally open contacts of four relays are respectively connected with a power switch for strobe lamp, a hook switch and a redialing switch for a telephone set, and a power switch for an intermediate relay, wherein, the normally closed contact of the intermediate relay is connected with a power switch for sonic equipment. The utility model can send out bright light alarm when superstandard noise is tested, can send out pager numbers, and can cut off a power supply of the sonic equipment.

Description

Noise monitor

The utility model relates to a kind of electronics dress of monitoring the dancing hall noise emission

Put, especially can when sound level exceeds standard, send caution, send the paging number and cut

The Noise monitor of disconnected noise source power supply.

At present, though known various sound level measurement device has the registration device, can not when sound level surpasses national standard, provide caution, report and cut off the noise source power supply to relevant department.State Standard of the People's Republic of China GB3096-93 " standard of environmental noise of urban area " has stipulated the ceiling value of the neighbourhood noise in five class zones, city.

The purpose of this utility model provides a kind of Noise monitor, and it can measure slight elevated noise, and the power supply that can send the high light caution thereupon, send the paging number and cut off noise source.

The purpose of this utility model is achieved in that and connects signal amplifier, rectifier, comparer, delay switch in turn, makes it to become the sound level switch.Connect sequential circuit with the sound level switch as power switch, four output terminals of sequential circuit connect four relay circuits respectively, and four relays connect stroboscopic lamp, switch hook respectively and redial switch, auxiliary reclay.When the monitored site sound level does not exceed standard, the not conducting of sound level switch, sequential circuit is not worked.When the monitored site sound level exceeded standard, sound level switch conduction, sequential circuit got electric work.At first being that stroboscopic lamp flicker is warned, is the paging number that telephone set sends storage then, is the auxiliary reclay adhesive after again, disconnects the power supply that connects stereo set.Thereby force to reduce noise emission, reach the purpose of monitoring noise.

Owing to adopt such scheme, can automatically send the high light caution monitoring when sound level exceeds standard, send pager number, and cut off the power supply of noise source automatically.

Below in conjunction with drawings and Examples the utility model is further specified.Fig. 1 is the main body of circuitry, wherein, and microphone MIC, capacitor C ₁, resistance R ₁-R ₅With operational amplifier IC _1-1Form audio signal amplifier.Diode D ₁, D ₂, capacitor C ₁Form rectifier.Resistance R ₇, R ₈With operational amplifier IC _1-2Form comparer.Capacitor C ₂, resistance R ₁₀, R ₁₁With triode T ₁, T ₂Form delay switch.Capacitor C ₂, resistance R ₆, R ₉In turn signal amplifier, rectifier, comparer, delay switch are connected into the sound level switch.The sound level switch connects sequential circuit.In the sequential circuit, IC ₂Two phase inverters, resistance R ₁₂, R ₁₃And capacitor C ₅Form pulse producer; Capacitor C ₆, resistance R ₁₄Sum counter IC ₃Form first order sequential; Capacitor C ₇, resistance R ₁₅, diode D ₃-D ₈Sum counter IC ₄Form second level sequential.The output terminal of pulse producer connects IC ₃Input end CP ₁, IC ₃Q ₁Output terminal links IC ₄Input end CP ₂, IC ₃Q ₂Output terminal is as sequential output A end, IC ₄Q ₂-Q ₇After connecting six diodes respectively, be connected to sequential output B end jointly, IC ₄Q ₈Output terminal is a sequential output C end, Q ₉Output terminal is a sequential output D end.Four sequential output terminals A, B, C, D connect a relay circuit separately, and identical relay circuit has four.Fig. 2 is the relay road, by R ', R ", diode D, triode T and relay J form.Fig. 3 is the connecting circuit of relay and stroboscopic lamp L, the relay normally opened contact J of B end _2-1Power switch as stroboscopic lamp.Fig. 4 is the connecting circuit of relay and telephone set P, the relay normally opened contact J of A end _1-1The switch hook K two ends that connect telephone set P, the relay normally opened contact J of C end _3-1The machine redial key R two ends of answering the call.Fig. 5 is the connecting circuit of relay and auxiliary reclay, the relay normally opened contact J of D end _4-1Make the power switch of auxiliary reclay CJ, the normally closed contact of auxiliary reclay is connected to the power switch of stereo set.Fig. 6 is the power circuit of complete machine, by transformer T, full-bridge D, three-terminal voltage-stabilizing IC ₅, capacitor C ₈, C ₉Form.

Claims (1)

1. A kind of Noise monitor is electrically connected signal amplifier, rectifier, comparer, delay switch in turn, becomes the sound level switch.It is characterized in that: connect sequential circuit as power switch with the sound level switch, four output terminals of sequential circuit connect four relay circuits respectively, the normally opened contact of four relays is connected to the switch hook of stroboscopic lamp power switch, telephone set respectively and redials switch, and the auxiliary reclay power switch.