CN2360888Y - Shock-proof guarding warner - Google Patents

Abstract

The utility model discloses an electric shock-proof guard alarm. An electronic circuit composed of a time delaying dc supply section, a high-frequency signal measurement and control section and a voice section is arranged in a casing body of the alarm. A treble loudspeaker is connected with the outer part of the casing body. When the utility model is arranged above a power transformer, the detection range of which the bottom diameter is from 4 to 8 M is formed. When someone enters a house, the utility model automatically sends out a voice prompt immediately, and all day guard is realized. The occurrence of electric shock accidents is effective avoided. The utility model has the advantages of reasonable function, stable working performance, high sensitivity, and appropriate guard ranges.

Description

Protection against electric shock is guarded alarm

The utility model belongs to alarm, but is specifically related to a kind of alarm of voice suggestion in investigative range.

Power transformer is a kind of equipment commonly used in the electrical network, and its application has a large capacity and a wide range, and wherein many transformers are installed in the open air, do not have the special messenger to guard, and also lack to block reliably to protect facility.Therefore, the personal injury accident that causes because of the charged position of touching power transformer happens occasionally, and has also had a strong impact on power supply safety.

The purpose of this utility model provides a kind of like this alarm: when the transformer, alarm sends voice suggestion automatically, thereby avoids the generation of electric shock accidents as the people.

Technical solutions of the utility model are as follows:

Protection against electric shock is guarded alarm and is made up of electronic circuit in alarm housing, the housing and the outer loudspeaker of housing.AC power is introduced in the housing outside housing, connect the elementary of rectifier transformer B, the bridge rectifier circuit that the secondary connection of B is made up of diode D3～D6, the minus earth of bridge rectifier circuit, cathode output end connects the positive pole of electrochemical capacitor C5, the minus earth of C5, at 1 pin that after C5 filtering, connects two three terminal regulator IC6 and IC7 respectively, the 2 pin ground connection of IC6 and IC7, connect the end of high-frequency filter capacitor C6 after the 3 pin parallel connections, the other end ground connection of C6, after C6 filtering, connect time base circuit IC8 be 8 pin and 4 pin of NE555 and lead to the collector of switch triode BG2 in, connect 6 pin and 2 pin of NE555 and lead to the positive pole of time-delay electrochemical capacitor C7, C7 minus earth, the 1 pin ground connection of NE555 through variable resistor R3,3 pin of NE555 connect the base stage of switch triode BG2 through isolation resistance R4, the BG2 base stage connects below-center offset resistance R 5 ground connection then simultaneously, R5 two ends shunt capacitance C8 in parallel, reverse parallel connection damper diode D2 between the BG2 collector and emitter; BG2 emitter output terminal is the direct current positive potential, be connected to the end of electromagnetic relay J over the ground after the filtering respectively through high-frequency filter capacitor C2, positive 12 volts of contacts of the end of the normally opened contact Jk-1 of J and modularization radar special circuit T9601, in T9601 inside, positive 12 volts of power supplys are guided 1 pin of three terminal regulator IC4 into, the 2 pin ground connection of IC4,3 pin lead to positive 9 volts of contacts of ic chip 1 over the ground after the filtering through high-frequency filter capacitor C1, the earth point of IC1 is to external ground, IC1 is also connecting radar antenna and sensitivity adjustable resistance Rp, the output point of IC1 connects the base stage of switch triode BG1 through isolation resistance R1, the grounded emitter of BG1, the collector output contact links to each other with the other end of T9601 external electromagnetic relay J, oppositely connects damper diode D1 between the collector of 1 pin of IC4 and BG1; The other end at the normally opened contact Jk-1 of electromagnetic relay J, leading to power discharging integrated block IC2 respectively is fool 1006 5 pin and 1 pin of three terminal regulator IC5, the 2 pin ground connection of IC5,3 pin lead to positive 5 volts of contacts of modular solid-state recording circuit SR9G26RX, in SR9G26RX inside, ic chip 3 is also connecting microphone MIC and recording switch REC, the earth point of IC3 is to external ground, output point connects coupling capacitor C3 positive pole, connect fool 1006 1 pin behind the negative pole connection isolation resistance R2, fool 1006 2 pin and 3 pin ground connection, 4 pin connect the positive pole of coupling capacitor C4, negative pole end is drawn outside the housing and is connected with loudspeaker Y one end, and the other end of Y is introduced ground connection in the housing.

The housing that protection against electric shock is guarded alarm adopts plastic material to make, when being installed in the power transformer top, the housing bottom surface is downwards towards power transformer, radar antenna plane among the modularization radar special circuit T9601 is placed on the bottom in the housing, and rectifier transformer B is placed on the far-end of radar antenna.

Technique scheme is provided with signal observing and controlling, audio alert and time-delay direct current supply part, and function is reasonable in design; Adopt integrated package and modularized circuit, peripheral cell is few, circuit connects simplification, and serviceability is more reliable; Be installed in the top of power transformer, protection domain is appropriate, has realized that all-weather guards, and has prevented the generation of electric shock accidents effectively.

Below in conjunction with drawings and Examples in detail the utility model is described in detail.

Fig. 1 is the novel electric principle schematic of this reality.

Fig. 2 is the utility model outside circuit connection diagram.

As shown in the figure:

Exchange 220 volts of power supplys and insert the elementary of rectifier transformer B, 15 volts of secondary output ACs, the bridge rectifier circuit that feeding is made up of four rectification diodes of D3～D6 (1N4001), the minus earth of bridge rectifier circuit, cathode output end connects 1 pin of three terminal regulator IC6 and IC7 (L7812) over the ground after the filtering through electrochemical capacitor C5 (1000 microfarad), the 2 pin ground connection of IC6 and IC7,3 pin are in parallel and through high-frequency filter capacitor C6 (0.01 microfarad) over the ground after the filtering, when connecting 8 pin that time base circuit IC8 is NE555 and 4 pin and leading to the collector of switch triode BG2 (3DD15), connect 6 pin and 2 pin of NE555 and lead to the positive pole of time-delay electrochemical capacitor C7 (100 microfarad) through adjustable resistance R3 (100K ohm), the minus earth of C7, the 1 pin ground connection of NE555,3 pin connect the base stage of BG2 through isolation resistance R4 (270 ohm), the base stage of BG2 connects below-center offset resistance R 5 (33k ohm) ground connection then simultaneously, R5 two ends shunt capacitance C8 (0.01 microfarad) in parallel, reverse parallel connection damping diode D2 (1N4001) between the BG2 collector and emitter, 12 volts of the emitter output direct current positive potentials of BG2,2 amperes of DC current, adjusting C7 can be by the time of time base circuit gauge tap triode BG2 time-delay conducting, as 2 minutes, thereby constitute the time-delay D.C. regulated power supply.The interference of the alternating-current pulse signal that the purpose of time-delay power supply produces when being to avoid the power transformer high tension transmission avoids the alternating-current pulse signal that the radar circuit in the alarm is caused damage; Modularization radar special circuit T9601 (part in the frame of broken lines) comprises radar antenna (90 millimeters of coil diameters, 1.5 millimeters in line footpath), ic chip 1, sensitivity adjustable resistance Rp, isolation resistance R1, switch triode BG1, three terminal regulator IC4, damper diode D1 and high-frequency filter capacitor C1, in the time of in working order, the internal circuit of radar antenna and ic chip 1 constitutes high frequency oscillator, outwards the width of cloth is penetrated radar wave, it surveys 4～8 meters of diameters, 2～4 meters of the ranges of sensitivity, when the people enters its range of control, oscillation frequency changed after oscillator received reflection wave, amplitude also changes, amplify by shaping, amplitude is amplified, width amplifies, digital frequency division is exported ten seconds pulse square wave.The positive 12 volts of positive 12 volts of contacts that lead to T9601 through high-frequency filter capacitor C2 (0.01 microfarad) over the ground after the filtering respectively of time-delay D.C. regulated power supply, the end of electromagnetic relay J (JRC-21F) end and its normally opened contact Jk-1, in T9601 inside, positive 12 volts of power supplys are guided 1 pin of three terminal regulator IC4 (L7809) into, 2 pin ground connection, 3 pin lead to positive 9 volts of contacts of ic chip 1 over the ground after the filtering through high-frequency filter capacitor C1 (0.01 microfarad), the earth point of IC1 is to external ground, radar antenna also links to each other with IC1 with sensitivity adjustable resistance Rp, the output point of IC1 connects the base stage of switch triode BG1 (C9013) through isolation resistance R1 (27K ohm), the grounded emitter of BG1, the collector output contact links to each other with the other end of the electromagnetic relay J of T9601 outside, between the collector of 1 pin of IC4 and BG1, oppositely connect damper diode D1 (1N4001), thereby constituting high-frequency signal observing and controlling part; The other end of the normally opened contact Jk-1 of J leads to phonological component: 5 pin of power discharging integrated block IC2 (fool 1006) are connected with Jk-1 with 1 pin of three terminal regulator IC5 (L7805), the 2 pin ground connection of IC5,3 pin lead to positive 5 volts of contacts of modular solid-state recording circuit SR9G26RX (part in another frame of broken lines), comprise ic chip 3 in SR9G26RX inside, coupled recording microphone MIC and recording switch REC, its typing, be 10 seconds readout time, press REC, can give first typing and prevent the language that gets an electric shock, as: Keep Clear-High Voltage, danger,High Voltage, please speed leave etc., the earth point of IC3 is to external ground, output contact leads to overcoupling electrochemical capacitor C3 (1 microfarad), isolation resistance R2 (100K ohm) links to each other with 1 pin of IC2,2 pin of IC2 and 3 pin ground connection, the logical overcoupling electrochemical capacitor C4 (470 microfarad) of 4 pin links to each other other end ground connection with the end of horn formula loudspeaker Y (TWH20), its impedance is 8 Ω, and power is 12 watts.

The shape of alarm housing 1 can be according to manufacture craft and user's request design, and as square box shaped, cylindrical shape etc., electronic circuit is packed in the housing 1, draws 2 power leads and 2 horn wires, and loudspeaker is arranged on outside the housing.Electronic circuit is packed into and is formed a whole after the housing 1, be installed in web member on the cross-arm at 2～3 meters, power transformer top, the bottom surface is downwards towards power transformer, form lower diameter and be 4～8 meters, highly be from the alarm bottom surface to transformer under the taper on ground guard scope.When electronic circuit is packed in the housing 1, with the bottom of the radar antenna floor plan in the modularization radar special circuit at housing 1, rectifier transformer B is arranged in the far-end of radar antenna, reduce absorption to high-frequency signal as far as possible, alarm housing 1 adopts nonmetallic materials such as plastic production, to see through radar signal and reflected signal.220 volts of power leads of the interchange of alarm are connected the secondary of power transformer, and loudspeaker Y is connected with two horn wires, is installed on the corresponding position.

Certainly, utilize the biplane characteristics of radar antenna, the shape with case design becomes to adapt to the emission of radar antenna twocouese signal and reflects is installed in the occasion that needs, and can realize the warning of guarding in the twocouese investigative range.

The course of work is summarized as follows:

When power transformer high-pressure side combined floodgate send electricity, the alarm AC power is through step-down, rectification, after the voltage stabilizing, control by time base circuit again, the switch triode BG2 conducting of delaying time, for the observing and controlling of alarm part and phonological component provide dc supply, after dc supply is connected probe portion, when the people enters the alarm investigative range, radar antenna receives reflection wave, output consecutive pulses square wave, the direct supply of the phonological component of alarm is connected in driving switch triode BG1 conducting by the actuating of relay, give the voice signal of recording earlier and transfer to loudspeaker, realize audio alert through power amplification.When the people left investigative range, switch triode BG1 ended after 10 seconds, and audio alert stops.

The utility model is operated in stationary state when the no reflection events signal, low in energy consumption; The voice signal output power is bigger when reflected signal is arranged, and voice prompt is loud.

The utility model electronic circuit is handled through heat-insulation and heat-preservation and waterproof sealing in housing, but under various weather conditions equal operate as normal.

The utility model is not only applicable to electrical outdoor power transformer, can be applicable to the occasion that other need guard warning yet.

Claims (4)

1, a kind of protection against electric shock is guarded alarm, by alarm housing (1), the outer high pitch loud-speaker Y of electronic circuit that the housing (1) of packing into is interior and housing (1) forms, it is characterized in that: AC power is introduced in the housing (1) from the outside, connect the elementary of rectifier transformer B, the bridge rectifier circuit that the secondary connection of B is made up of diode D3～D6, the minus earth of bridge rectifier circuit, cathode output end connects the positive pole of electrochemical capacitor C5, the minus earth of C5, at 1 pin that after C5 filtering, connects two three terminal regulator IC6 and IC7, the 2 pin ground connection of IC6 and IC7, connect the end of high-frequency filter capacitor C6 after the 3 pin parallel connections, the other end ground connection of C6, after C6 filtering, connect time base circuit IC8 be 8 pin and 4 pin of NE555 and lead to the collector of switch triode BG2 in, connect 6 pin and 2 pin of NE555 and lead to the positive pole of time-delay electrochemical capacitor C7 through variable resistor R3, the minus earth of C7, the 1 pin ground connection of NE555,3 pin of NE555 connect the base stage of switch triode BG2 through isolation resistance R4, connect below-center offset resistance R 5 ground connection then simultaneously, R5 two ends shunt capacitance C8 in parallel, reverse parallel connection damper diode D2 between the collector and emitter of BG2; BG2 emitter output terminal is connected to the end of electromagnetic relay J over the ground after the filtering respectively through high-frequency filter capacitor C2, positive 12 volts of contacts of the end of the normally opened contact Jk-1 of J and modularization radar special circuit T9601, in T9601 inside, positive 12 volts of power supplys are guided 1 pin of three terminal regulator IC4 into, the 2 pin ground connection of IC4,3 pin lead to positive 9 volts of contacts of ic chip 1 over the ground after the filtering through high-frequency filter capacitor C1, the earth point of IC1 is to external ground, IC1 is also connecting radar antenna and sensitivity adjustable resistance Rp, the output point of IC1 connects the base stage of switch triode BG1 through isolation resistance R1, the grounded emitter of BG1, the collector output contact links to each other with the other end of T9601 external electromagnetic relay J, is oppositely connecting damper diode D1 between the collector of 1 pin of IC4 and BG1; The other end at the normally opened contact Jk-1 of J, leading to power discharging integrated block IC2 respectively is fool 1006 5 pin and 1 pin of three terminal regulator IC5, the 2 pin ground connection of IC5,3 pin lead to positive 5 volts of contacts of modular solid-state recording circuit SR9G26RX, portion within it, ic chip 3 is also connecting microphone MIC and recording switch REC, the earth point of IC3 is to external ground, output contact connects coupling capacitor C3 positive pole, connect fool 1006 1 pin behind the negative pole connection isolation resistance R2, fool 1006 2 pin and 3 pin ground connection, 4 pin connect the positive pole of coupling capacitor C4, negative pole end is drawn outside the housing (1) and is connected with loudspeaker Y one end, and the other end of Y is introduced the interior ground connection of housing (1).

2, protection against electric shock according to claim 1 is guarded alarm, it is characterized in that: described alarm housing (1) adopts plastic material to make.

3, protection against electric shock according to claim 1 and 2 is guarded alarm, it is characterized in that: described loudspeaker Y is a horn formula loudspeaker.

4, guard alarm according to claim 1 or 2 or 3 described protection against electric shocks, it is characterized in that: when being installed on the power transformer top, alarm housing (1) bottom surface is downwards towards power transformer, the radar antenna plane is placed on the bottom in the housing (1), and rectifier transformer B is placed on the far-end of radar antenna.

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