CN214376837U - Electric line fire early warning monitoring devices - Google Patents
Electric line fire early warning monitoring devices Download PDFInfo
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- CN214376837U CN214376837U CN202120645060.4U CN202120645060U CN214376837U CN 214376837 U CN214376837 U CN 214376837U CN 202120645060 U CN202120645060 U CN 202120645060U CN 214376837 U CN214376837 U CN 214376837U
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Abstract
The utility model discloses an electric line conflagration early warning monitoring devices belongs to electron technical field, including the casing, casing the place ahead is provided with display screen and warning horn hole, and the front end of casing is provided with the antenna, and the side of casing is provided with sensor interface hole, detection power line terminal outgoing lines and detection power line incoming terminals. The circuit board is arranged in the shell and comprises a wireless module, a power circuit, a current and voltage sampling circuit, a zero-crossing detection circuit, an overcurrent detection circuit, a controller circuit, an ambient temperature sensor, a smoke sensor and an alarm. Through the inside electric current of collection circuit, voltage, zero passage and overflowing, then pass to the server through wireless the data of gathering to according to outside temperature etc. judge whether the circuit breaks down, in time send the chimes of doom, avoid appearing the conflagration, detect the protection to the electric line in the building.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to an electric line conflagration early warning monitoring devices.
Background
According to the fire statistics in recent years in China, the annual average occurrence frequency of electrical fires accounts for about 30% of the annual total occurrence frequency of the fire, accounts for about 80% of the annual total occurrence frequency of the fire with a great weight, is the first cause of each fire, and the loss accounts for 53% of the fire loss, while the annual occurrence frequency of the electrical fires in developed countries only accounts for 8% -13% of the annual total fire occurrence frequency. Electrical lines are the main ignition source (about 50%) for electrical fires, followed by electrical appliances, electrical equipment and consumer equipment. In addition, the lighting fixture is also relatively overheated, and mainly the fluorescent lamp ballast is in a working state for a long time, so that overheating or failure is generated. Short circuits are the primary cause of electrical fires (approximately 51%), followed by overheating and poor contact. Therefore, the research on the prevention and treatment of electrical fire is urgent, and a monitoring device for an electrical line needs to be researched.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric wire way conflagration early warning monitoring devices solves the technical problem that current electric wire way causes electric fire.
The utility model provides an electric line conflagration early warning monitoring devices, which comprises a housin, casing the place ahead is provided with display screen and warning horn hole, the front end of casing is provided with the antenna, the side of casing is provided with sensor interface hole, detect power cord terminal outgoing lines and detect power cord incoming line terminal, sensor interface hole, detect power cord terminal outgoing lines set up in same one side, detect power cord terminal incoming line setting in the opposite side, be provided with the circuit board in the casing, the circuit board includes wireless module, power supply circuit, current and voltage sampling circuit, zero cross detection circuit, overcurrent detection circuit, controller circuit, ambient temperature sensor, smoke transducer and alarm, power supply circuit's input and external commercial power are connected, power supply circuit's output and controller circuit are connected the power supply, wireless module, current and voltage sampling circuit, zero cross detection circuit, overcurrent detection circuit, the alarm of detection circuit, smoke transducer and alarm, the input of the electric circuit is connected with the controller circuit, wireless module, current and voltage sampling circuit, zero cross detection circuit, overcurrent detection circuit, the detection circuit, The environment temperature sensor, the smoke sensor and the alarm are all connected with the controller circuit, and the sensor interface hole and the display screen are all connected with the controller circuit.
Further, the circuit board further comprises a relay circuit, a touch display screen circuit and a wire temperature sensor, the relay circuit is arranged on a power line, a control end of the relay circuit is connected with a controller circuit, the touch display screen circuit and the wire temperature sensor are both connected with the controller circuit, the wire temperature sensor is attached to the wire and fixed through a binding band, an incoming terminal of a detection power line is connected with an input end of the relay circuit, and an outgoing terminal of the detection power line is connected with an output end of the relay circuit.
Furthermore, the power supply circuit comprises a voltage transformation circuit, an electric quantity storage circuit and a power supply circuit, wherein the input end of the voltage transformation circuit is connected with the mains supply, and the voltage transformation circuit is connected with the power supply circuit through the electric quantity storage circuit.
Furthermore, the electric quantity storage circuit comprises capacitors C1-C2, a resistor R19 and a diode D14, wherein one end of the resistor R19 is connected with a power line, the other end of the resistor R19 is connected with the anode of the capacitor C1, the cathode of the capacitor C1 is connected with the anode of the capacitor C2, the cathode of the capacitor C2 is grounded, the input end of the diode D14 is connected with the anode of the capacitor C1, and the output end of the diode D14 is connected with the power line.
Furthermore, the relay circuit comprises a relay RL1, resistors R29-R30, a diode D21, a triode Q1 and an inductor L52, one end of a switch wire of the relay RL1 is connected with a detection power line inlet terminal, the other end of the switch wire is connected with a detection power line outlet terminal, one control line is connected with a power supply, the other control line is connected with a C electrode of the triode Q1 and an input end of the diode D21, an output end of the diode D21 is connected with the power supply, one end of the resistor R29 is connected with an IO port of the controller circuit, the other end of the resistor R1 is connected with a b electrode of the triode Q1 and one end of the resistor R30, an e electrode of the triode Q1 is connected with the other end of the resistor R30, one end of the inductor L52 and the ground, and the other end of the inductor L52 is grounded.
Furthermore, the over-current detection circuit comprises a current waveform amplifying circuit, a voltage following circuit, an alternating current positive half-waveform detection circuit and an alternating current negative half-waveform detection circuit, wherein the output end of the voltage following circuit is connected with the current waveform amplifying circuit, and the number ends of the current waveform amplifying circuit are respectively connected with the alternating current positive half-waveform detection circuit and the alternating current negative half-waveform detection circuit.
Further, the voltage follower circuit comprises an inductor L51, capacitors C51-C51, resistors R51-R51, a resistor 54 and an amplifier U5 51, wherein one end of the inductor L51 is connected with a dc power supply and one end of the capacitor C51, the other end of the inductor L51 is connected with another dc power supply input end, one end of the capacitor C51 and one end of the resistor R51, the other end of the capacitor C51 is connected with the other end of the capacitor C51 and grounded, the other end of the resistor R51 is connected with one end of the resistor R51 and a positive input end of the amplifier U5 51, the other end of the resistor R51 is grounded, the negative input end of the amplifier U5 51 is connected with an output end and one end of the resistor R51, the current waveform amplification circuit comprises the capacitors C51-C51, the resistors R51-R51, the capacitors C51 and the capacitors C51 are respectively connected in series with a line of the ac input, and the capacitors C51 are respectively connected in series with the capacitor C51 and the capacitor C51, the positive input end and the negative input end of the amplifier U5C are respectively connected with one end of a resistor R52 and one end of a resistor R53, one end of the resistor R55 is connected with the negative input end of the amplifier U5C, the other end of the resistor R55 is connected with the output end of the amplifier U5C, the positive half-wave detection circuit for alternating current comprises a resistor R81-R82, a resistor R59, a capacitor C55 and an amplifier U5B, the negative input end of the amplifier U5B is connected with the output end of the amplifier U5C through a resistor R59, one end of the resistor R82 is connected with a power supply, the other end of the resistor R55 is connected with one end of the capacitor C55, one end of the resistor R55 is connected with the positive input end of the amplifier U5 55, the other end of the resistor R55 is connected with the other end of the capacitor C55 and grounded, the negative half-wave detection circuit for alternating current comprises a resistor R55, one end of the negative input end of the amplifier U55 is connected with one end of the resistor R55, the other end of the resistor R57 is connected with the other end of the capacitor C54 and is grounded, and one end of the capacitor C54 and one end of the resistor R57 are connected with the anode input end of the amplifier U5A.
Furthermore, the zero-crossing detection circuit comprises an operational amplifier U9, resistors R95-R96 and a capacitor C67, wherein the positive input end of the operational amplifier U9 is grounded, the negative input end of the operational amplifier U9 is connected with one end of a resistor R95 and one end of a resistor R96, the other end of the resistor R96 is connected with a live wire of a detection line, the other end of the resistor R95 is connected with the output end of the operational amplifier U9, one end of the capacitor C67 is connected with a direct-current power supply and is in power supply connection with the operational amplifier U9, and the other end of the capacitor C67 is grounded.
The utility model adopts the above technical scheme, the utility model discloses following technological effect has:
the utility model discloses an gather the inside electric current of circuit, voltage, zero passage and overcurrent, then pass to the server through wireless the data of gathering, and according to outside temperature etc., judge whether the circuit breaks down, in time send the chimes of doom, avoid appearing the conflagration, detect the protection to the electric circuit in the building, detect the power supply line residual current that arouses the electric fire main reason, wire temperature, electric current and surrounding environment temperature isoparametric, possess the early warning function, can real-time supervision power supply line parameter, when the parameter of monitoring circuit reaches early warning state, just send the warning automatically.
Drawings
Fig. 1 is a schematic view of the external structure of the present invention.
Fig. 2 is a schematic block diagram of the circuit board of the present invention.
Fig. 3 is a schematic diagram of the power circuit of the present invention.
Fig. 4 is the voltage and current sampling and relay circuit schematic diagram of the present invention.
Fig. 5 is a control schematic diagram of the relay of the present invention.
Fig. 6 is a schematic diagram of the zero-crossing detection circuit of the present invention.
Fig. 7 is the schematic diagram of the over-current detection circuit of the present invention.
Reference numbers in the figures: 1-a shell; 2-a display screen; 3-alarm horn hole; 4-an antenna; 5-a sensor interface aperture; 6-detecting the outlet terminal of the power line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, preferred embodiments are described in detail. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
An electric line fire early warning and monitoring device is shown in figures 1-2 and comprises a shell 1, a display screen 2 and an alarm horn hole 3 are arranged in front of the shell 1, an antenna 4 is arranged at the front end of the shell 1, a sensor interface hole 5, a detection power line outgoing terminal 6 and a detection power line incoming terminal are arranged on the side edge of the shell 1, the sensor interface hole 5 and the detection power line outgoing terminal 6 are arranged on the same side, the detection power line incoming terminal is arranged on the other side, a circuit board is arranged in the shell 1 and comprises a wireless module, a power circuit, a current and voltage sampling circuit, a zero-crossing detection circuit, an overcurrent detection circuit, a controller circuit, an environmental temperature sensor, a smoke sensor and an alarm, the input end of the power circuit is connected with an external commercial power supply, the output end of the power circuit is connected with the controller circuit for power supply, the wireless module, the current and voltage sampling circuit, The zero-crossing detection circuit, the overcurrent detection circuit, the ambient temperature sensor, the smoke sensor and the alarm are all connected with the controller circuit, and the sensor interface hole 5 and the display screen 2 are all connected with the controller circuit. The power line to be detected enters the relay from the detection power line inlet terminal, and then the circuit board detects the entering power line from the detection power line outlet terminal 6. Detect the voltage and current isoparametric of electric wire, detect temperature and smog etc. simultaneously, judge whether probably the conflagration appears, prejudge in advance, then send the chimes of doom, pass through the wireless remote server that passes to the data that detect simultaneously, wireless module is 4G module or WIFI route module.
The embodiment of the utility model provides an in, the circuit board still includes relay circuit, touch display screen circuit and wire temperature sensor, relay circuit sets up on the power cord, relay circuit's control end and controller circuit connection, touch display screen circuit and wire temperature sensor all with controller circuit connection, wire temperature sensor laminating is fixed on the wire and with the bandage, it is connected with relay circuit's input to detect power cord incoming terminal, it is connected with relay circuit output to detect power cord leading-out terminal 6. The wire temperature sensor uses WZPP patch type temperature sensor, the environment temperature sensor only needs to use a common temperature sensor, and the controller circuit is a minimum system of STM32 series.
In the embodiment of the utility model, as shown in fig. 3, power supply circuit includes vary voltage circuit, electric quantity storage circuit and supply circuit, and vary voltage circuit's input and mains connection, vary voltage circuit are connected with supply circuit through electric quantity storage circuit. The electric quantity storage circuit comprises capacitors C1-C2, a resistor R19 and a diode D14, one end of the resistor R19 is connected with a power line, the other end of the resistor R19 is connected with the anode of the capacitor C1, the cathode of the capacitor C1 is connected with the anode of the capacitor C2, the cathode of the capacitor C2 is grounded, the input end of the diode D14 is connected with the anode of the capacitor C1, and the output end of the diode D14 is connected with the power line. The power supply circuit mainly converts 220V mains supply into a power supply of +5V required by the controller circuit.
In the embodiment of the present invention, as shown in fig. 4-5, the relay circuit includes relay RL1, resistors R29-R30, diode D21, triode Q1 and inductor L52, a switch line of relay RL1 is connected to the incoming line terminal of the detection power line, another end is connected to the outgoing line terminal 6 of the detection power line, a control line is connected to the power supply, another control line is connected to the C pole of triode Q1 and the input end of diode D21, the output end of diode D21 is connected to the power supply, one end of resistor R29 is connected to the IO port of the controller circuit, another end is connected to the b pole of triode Q1 and one end of resistor R30, the e pole of triode Q1 is connected to the other end of resistor R30, one end of inductor L52 and ground, and the other end of inductor L52 is grounded. The current sampling and voltage sampling circuit is used for sampling voltage and current signals, and the relay circuit controls the relay switch according to the control signal sent by the controller circuit as the high level or the low level.
The embodiment of the utility model provides an in, as shown in fig. 6, overcurrent detection circuit includes current waveform amplification circuit, voltage follower circuit, the positive half waveform detection circuitry of alternating current and the negative half waveform detection circuitry of alternating current, and voltage follower circuit's output and current waveform amplification circuit are connected, current waveform amplification circuit's number end is connected with the positive half waveform detection circuitry of alternating current and the negative half waveform detection circuitry of alternating current respectively. The voltage following circuit comprises an inductor L51, capacitors C51-C51, resistors R51-R51, a resistor 54 and an amplifier U5 51, one end of the inductor L51 is connected with a direct current power supply and one end of the capacitor C51, the other end of the inductor L51 is connected with another direct current power supply input end, one end of the capacitor C51 and one end of the resistor R51, the other end of the capacitor C51 is connected with the other end of the capacitor C51 and is grounded, the other end of the resistor R51 is connected with one end of the capacitor C51 and the positive input end of the amplifier U5 51, the other end of the resistor R51 is grounded, the resistor R51 and the negative input end of the amplifier U5 51 are connected with an output end and one end of the resistor R51, the current waveform amplifying circuit comprises the capacitors C51-C51, the resistors R51 and the capacitor C51 are respectively connected in series with two lines of alternating current input, and the capacitor C51 are respectively connected in series with the capacitor C51, the positive input end and the negative input end of the amplifier U5C are respectively connected with one end of a resistor R52 and one end of a resistor R53, one end of the resistor R55 is connected with the negative input end of the amplifier U5C, the other end of the resistor R55 is connected with the output end of the amplifier U5C, the positive half-wave detection circuit for alternating current comprises a resistor R81-R82, a resistor R59, a capacitor C55 and an amplifier U5B, the negative input end of the amplifier U5B is connected with the output end of the amplifier U5C through a resistor R59, one end of the resistor R82 is connected with a power supply, the other end of the resistor R55 is connected with one end of the capacitor C55, one end of the resistor R55 is connected with the positive input end of the amplifier U5 55, the other end of the resistor R55 is connected with the other end of the capacitor C55 and grounded, the negative half-wave detection circuit for alternating current comprises a resistor R55, one end of the negative input end of the amplifier U55 is connected with one end of the resistor R55, the other end of the resistor R57 is connected with the other end of the capacitor C54 and is grounded, and one end of the capacitor C54 and one end of the resistor R57 are connected with the anode input end of the amplifier U5A.
In the embodiment of the utility model, as shown in fig. 7, zero cross detection circuit includes operational amplifier U9, resistance R95-R96 and electric capacity C67, operational amplifier U9's positive input end ground connection, operational amplifier U9's negative pole input and resistance R95's one end and resistance R96's one end are connected, another termination detection circuitry live wire of resistance R96, resistance R95's the other end is connected with operational amplifier U9's output, an end of electric capacity C67 connects DC power supply and operational amplifier U9 power supply and is connected, other end ground connection. And detecting whether the power line crosses zero, and then transmitting the detected data to a remote server through wireless.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides an electric wire fire early warning monitoring devices which characterized in that: the portable alarm comprises a shell (1), a display screen (2) and an alarm horn hole (3) are arranged in front of the shell (1), an antenna (4) is arranged at the front end of the shell (1), a sensor interface hole (5), a detection power line outgoing terminal (6) and a detection power line incoming terminal are arranged on the side edge of the shell (1), the sensor interface hole (5) and the detection power line outgoing terminal (6) are arranged on the same side, the detection power line incoming terminal is arranged on the other side, a circuit board is arranged in the shell (1), and comprises a wireless module, a power circuit, a current and voltage sampling circuit, a zero-crossing detection circuit, an overcurrent detection circuit, a controller circuit, an environmental temperature sensor, a smoke sensor and an alarm, the input end of the power circuit is connected with an external commercial power, the output end of the power circuit is connected with the controller circuit for power supply, and the wireless module, the current and voltage sampling circuit are connected with the controller circuit for power supply, The zero-crossing detection circuit, the overcurrent detection circuit, the ambient temperature sensor, the smoke sensor and the alarm are all connected with the controller circuit, and the sensor interface hole (5) and the display screen (2) are all connected with the controller circuit.
2. An electrical line fire early warning and monitoring device according to claim 1, wherein: the circuit board further comprises a relay circuit, a touch display screen circuit and a wire temperature sensor, the relay circuit is arranged on a power line, a control end of the relay circuit is connected with a controller circuit, the touch display screen circuit and the wire temperature sensor are both connected with the controller circuit, the wire temperature sensor is attached to the wire and fixed by a binding band, a power line inlet terminal is connected with the input end of the relay circuit, and a power line outlet terminal (6) is connected with the output end of the relay circuit.
3. An electrical line fire early warning and monitoring device according to claim 2, wherein: the power supply circuit comprises a transformation circuit, an electric quantity storage circuit and a power supply circuit, wherein the input end of the transformation circuit is connected with the mains supply, and the transformation circuit is connected with the power supply circuit through the electric quantity storage circuit.
4. An electrical line fire early warning and monitoring device according to claim 3, wherein: the electric quantity storage circuit comprises capacitors C1-C2, a resistor R19 and a diode D14, one end of the resistor R19 is connected with a power line, the other end of the resistor R19 is connected with the anode of the capacitor C1, the cathode of the capacitor C1 is connected with the anode of the capacitor C2, the cathode of the capacitor C2 is grounded, the input end of the diode D14 is connected with the anode of the capacitor C1, and the output end of the diode D14 is connected with the power line.
5. An electrical line fire early warning and monitoring device according to claim 4, wherein: the relay circuit comprises a relay RL1, resistors R29-R30, a diode D21, a triode Q1 and an inductor L52, one end of a switch wire of the relay RL1 is connected with a detection power line inlet terminal, the other end of the switch wire is connected with a detection power line outlet terminal (6), one control line is connected with a power supply, the other control line end is connected with a C electrode of the triode Q1 and an input end of the diode D21, an output end of the diode D21 is connected with the power supply, one end of the resistor R29 is connected with an IO port of the controller circuit, the other end of the resistor R1 is connected with a b electrode of the triode Q1 and one end of the resistor R30, an e electrode of the triode Q1 is connected with the other end of the resistor R30, one end of the inductor L52 and the ground, and the other end of the inductor L52 is grounded.
6. An electrical line fire early warning and monitoring device according to claim 5, wherein: the overcurrent detection circuit comprises a current waveform amplifying circuit, a voltage following circuit, an alternating current positive half waveform detection circuit and an alternating current negative half waveform detection circuit, wherein the output end of the voltage following circuit is connected with the current waveform amplifying circuit, and the number ends of the current waveform amplifying circuit are respectively connected with the alternating current positive half waveform detection circuit and the alternating current negative half waveform detection circuit.
7. An electrical line fire early warning and monitoring device according to claim 6, wherein: the voltage following circuit comprises an inductor L51, capacitors C51-C51, resistors R51-R51, a resistor 54 and an amplifier U5 51, one end of the inductor L51 is connected with a direct current power supply and one end of the capacitor C51, the other end of the inductor L51 is connected with another direct current power supply input end, one end of the capacitor C51 and one end of the resistor R51, the other end of the capacitor C51 is connected with the other end of the capacitor C51 and is grounded, the other end of the resistor R51 is connected with one end of the capacitor C51 and the positive input end of the amplifier U5 51, the other end of the resistor R51 is grounded, the resistor R51 and the negative input end of the amplifier U5 51 are connected with an output end and one end of the resistor R51, the current waveform amplifying circuit comprises the capacitors C51-C51, the resistors R51 and the capacitor C51 are respectively connected in series with two lines of alternating current input, and the capacitor C51 are respectively connected in series with the capacitor C51, the positive input end and the negative input end of the amplifier U5C are respectively connected with one end of a resistor R52 and one end of a resistor R53, one end of the resistor R55 is connected with the negative input end of the amplifier U5C, the other end of the resistor R55 is connected with the output end of the amplifier U5C, the positive half-wave detection circuit for alternating current comprises a resistor R81-R82, a resistor R59, a capacitor C55 and an amplifier U5B, the negative input end of the amplifier U5B is connected with the output end of the amplifier U5C through a resistor R59, one end of the resistor R82 is connected with a power supply, the other end of the resistor R55 is connected with one end of the capacitor C55, one end of the resistor R55 is connected with the positive input end of the amplifier U5 55, the other end of the resistor R55 is connected with the other end of the capacitor C55 and grounded, the negative half-wave detection circuit for alternating current comprises a resistor R55, one end of the negative input end of the amplifier U55 is connected with one end of the resistor R55, the other end of the resistor R57 is connected with the other end of the capacitor C54 and is grounded, and one end of the capacitor C54 and one end of the resistor R57 are connected with the anode input end of the amplifier U5A.
8. An electrical line fire early warning and monitoring device according to claim 7, wherein: the zero-crossing detection circuit comprises an operational amplifier U9, resistors R95-R96 and a capacitor C67, wherein the positive electrode input end of the operational amplifier U9 is grounded, the negative electrode input end of the operational amplifier U9 is connected with one end of a resistor R95 and one end of a resistor R96, the other end of the resistor R96 is connected with a live wire of a detection line, the other end of the resistor R95 is connected with the output end of the operational amplifier U9, one end of the capacitor C67 is connected with a direct-current power supply and is in power supply connection with the operational amplifier U9, and the other end of the capacitor C67 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120645060.4U CN214376837U (en) | 2021-03-30 | 2021-03-30 | Electric line fire early warning monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120645060.4U CN214376837U (en) | 2021-03-30 | 2021-03-30 | Electric line fire early warning monitoring devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214376837U true CN214376837U (en) | 2021-10-08 |
Family
ID=77973561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120645060.4U Expired - Fee Related CN214376837U (en) | 2021-03-30 | 2021-03-30 | Electric line fire early warning monitoring devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214376837U (en) |
-
2021
- 2021-03-30 CN CN202120645060.4U patent/CN214376837U/en not_active Expired - Fee Related
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Granted publication date: 20211008 |