CN214670988U - Linear light beam smoke fire detector capable of automatically adjusting sensitivity - Google Patents
Linear light beam smoke fire detector capable of automatically adjusting sensitivity Download PDFInfo
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- CN214670988U CN214670988U CN202121139780.XU CN202121139780U CN214670988U CN 214670988 U CN214670988 U CN 214670988U CN 202121139780 U CN202121139780 U CN 202121139780U CN 214670988 U CN214670988 U CN 214670988U
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Abstract
The utility model discloses a linear beam smoke fire detector capable of self-adjusting sensitivity, which comprises a singlechip circuit arranged in the detector, the singlechip circuit is connected with an infrared transmitting circuit for transmitting infrared outwards, an infrared receiving circuit for receiving infrared reflected by a reflecting device, a positioning calibration circuit for calibrating the angle of the detector so that the infrared receiving circuit receives the reflected infrared, a signal processing circuit for adjusting the intensity of infrared rays transmitted by the infrared transmitting circuit according to the intensity of the infrared rays received and transmitted by the infrared receiving circuit, and an alarm/error output circuit for smoke detection alarm and abnormal error detection, the singlechip circuit controls the signal processing circuit to adjust the intensity of infrared rays transmitted by the infrared transmitting circuit according to the intensity of the infrared rays received and transmitted by the infrared receiving circuit, thereby realizing self-adjusting sensitivity of infrared beam smoke, greatly simplified debug time for installation.
Description
[ technical field ]
The utility model relates to a line type light beam smoke fire detector that can adjust sensitivity by oneself.
[ background art ]
At present, in a conventional fire alarm system, a linear beam smoke fire detector transmits an infrared beam and an infrared receiver receives an infrared signal through a reflector or a straight line alignment mode. When smoke exists in the light path of the detector, the signal of the receiver is weakened, and when the signal is weakened to a certain threshold value, an alarm signal is generated. The use distance of the linear beam smoke detector on the market is within 100 meters, different gains are required to be set according to different detection distances, and manual operation is required when the gains are set in the prior art, for example, a special dial key is used, or a handheld device and the detector are used for communication and sensitivity adjustment. The existing product needs human intervention in actual installation and debugging, and is relatively complex.
[ contents of utility model ]
The utility model overcomes above-mentioned technique is not enough, provides a line type light beam smoke fire detector that can adjust sensitivity by oneself.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a linear light beam smoke fire detector capable of automatically adjusting sensitivity is characterized in that: the device comprises a single chip circuit arranged in a detector, wherein the single chip circuit is connected with an infrared transmitting circuit used for transmitting infrared outwards, an infrared receiving circuit used for receiving infrared reflected by a reflecting device, a positioning calibration circuit used for calibrating the angle of the detector to enable the infrared receiving circuit to receive the reflected infrared, a signal processing circuit used for adjusting the intensity of the infrared transmitted by the infrared transmitting circuit according to the intensity of the infrared transmitted by the infrared receiving circuit, and an alarm/error output circuit used for smoke detection alarm and abnormal detection error reporting.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: the singlechip circuit is connected with a communication circuit for communicating outwards.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: and a power supply input circuit for supplying power is also arranged in the detector.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: the single chip circuit is connected with an indicator light circuit used for displaying the working state.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: the infrared emission circuit comprises a drive control chip U1 which is connected in sequence, a pin ((U) 1) of the drive control chip U1 is respectively connected with a 5V power supply and one end of a capacitor C8, the other end of the capacitor C8 is grounded, a pin ((U) 1) of the drive control chip U1) is respectively connected with one end of a pin ((R) 4), the other end of a resistor R4 is respectively connected with a singlechip circuit and the positive end of a diode D2), the negative end of the diode D2 is connected with a 3.3V power supply, a pin ((U) 1) of the drive control chip is respectively connected with one end of a resistor R31 and a pin ((U) 1), a pin ((U) 1) of the drive control chip is grounded, a pin ((U) 1) of the drive control chip is respectively connected with one end of a resistor R3 and one end of a resistor R30V power supply, the other end of the resistor R3 is grounded, the other end of the resistor R3 is connected with a 5V power supply, the other end of the resistor R31 is respectively connected with a pin ((Q1) of the light emitting control chip Q1, one end of the resistor R1 is grounded, pin of drive control chip U1 is connected to one end of resistor R5 and one end of capacitor C6, the other end of capacitor C6 is grounded, the other end of resistor R5 is connected to one end of resistor R26 and base of transistor Q4, the other end of resistor R26 and emitter of transistor Q4 are grounded, collector of transistor Q4 is connected to pin of operational amplifier U4 and collector of transistor Q4, base of transistor Q4 is connected to one end of resistor R4 and one end of resistor R4, the other end of resistor R4 is connected to SCM circuit, emitter of transistor Q4 and the other end of resistor R4 are grounded, pin of operational amplifier U4 is connected to one end of capacitor R4 and one end of resistor R4, the other end of resistor R4 is connected to 3.3V power supply, the other end of resistor R4 is grounded, pin of operational amplifier U4 is connected to power supply, pin of operational amplifier U4 is connected to ground, pin of capacitor C4 and another end of capacitor C4, pin of operational amplifier U4 is connected to light emitting chip, Pin three of a light emitting control chip Q1 and one end of a resistor R28 are connected, the other end of the resistor R28 is grounded, pin four of the light emitting control chip Q1 is respectively connected with pin six of the light emitting control chip Q1 and the negative end of an infrared emission tube U2, the positive end of the infrared emission tube U2 is respectively connected with a 24V power supply, the positive end of an electrolytic capacitor C10 and one end of a capacitor C11 through a resistor R2, and the negative end of the electrolytic capacitor C10 and the negative end of the capacitor C11 are respectively grounded.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: the signal processing circuit comprises a signal processing chip U5, a pin of a signal processing chip U5 is respectively connected with one end of a 5V power supply and one end of a capacitor C32, the other end of the capacitor C32 is grounded, a pin of a signal processing chip U5 is grounded, a pin of a signal processing chip U5 and a pin of a signal processing chip U5 are respectively connected with a single chip microcomputer circuit, a pin of a signal processing chip U5 is respectively connected with one end of a capacitor C19, a pin of an operational amplifier U16.1 and one end of a resistor R16 through a resistor R56, the other end of the resistor R16 is grounded, the other end of the capacitor C19 is respectively connected with a pin of a signal processing chip U5, a pin of an operational amplifier U16.1 and one end of a capacitor C7, a pin of the operational amplifier U16.1 is connected with the 5V power supply, a pin of the operational amplifier U16.1 is grounded, a pin of the operational amplifier U16.1 is respectively connected with one end of a resistor R15, one end of an operational amplifier U15.38 is connected with a pin of a power supply and a pin of a power supply, a pin of an amplifier U9 is connected with a power supply, pin 15.2 of operational amplifier U15.2 grounded, pin 15.2 connected to the other end of resistor R100 and resistor R6, pin R6 grounded, pin 15.2 connected to the other end of resistor R9, pin C2 and pin R7 via capacitor C1, pin C2 grounded, pin R7 connected to one end of resistor R13 and pin U15.1, pin U15.1 connected to power supply, pin U15.1 grounded, pin 22, pin R638, pin R6316.23, pin R638 connected to ground, pin R638, pin R21 and pin R68616 connected to ground, pin R638 and pin R2 connected to the other end of resistor R638, pin R638 and pin R2, pin R21, pin R638 connected to ground, pin R2 and pin R2 connected to the other end of resistor R638 and pin R2.8, One end of a capacitor C16 is connected with a 5V power supply, the other end of the capacitor C16 is grounded, a pin (C16.2) of an amplifier U is respectively connected with a pin (C16.2) of the amplifier U and one end of a resistor R37, and the other end of the resistor R37 is connected with a single chip microcomputer circuit.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: the positioning calibration circuit comprises a positioning calibration chip U1, and the positioning calibration chip U1 is respectively connected with the single chip circuit and a display LED1 for displaying the adjustment angle.
The linear beam smoke fire detector with self-adjustable sensitivity is characterized in that: the alarm/error output circuit comprises an alarm connecting terminal CN1, wherein pin # of CN1 of the alarm connecting terminal is connected with a 24V power supply, pin # of CN1 of the alarm connecting terminal is grounded, pin # of CN1 of the alarm connecting terminal is respectively connected with pin # of alarm relay K1 and pin # of alarm relay K1, pin # of alarm relay K1 is respectively connected with the negative pole end of diode D3 and one end of resistor R64, the other end of resistor R64 is connected with the 24V power supply, the positive pole end of diode D3 is connected with the collector of triode Q5 and pin # of alarm relay K1, the base of triode Q5 is respectively connected with one end of resistor R44 and one end of resistor R66, the other end of resistor R44 is connected with a single chip microcomputer circuit, the emitter of triode Q5 and the other end of resistor R66 are respectively grounded, pin # of alarm relay K1 is connected with pin # of CN1 of the alarm connecting terminal, and pin # of K1 is connected with pin # of CN1 of the alarm connecting terminal, the alarm connecting terminal CN1 pin III is respectively connected with an error relay K2 pin I and an error relay K2 pin II, the error relay K2 pin II is respectively connected with one end of a resistor R65 and a cathode end of a diode D6, the other end of the resistor R65 is connected with a 24V power supply, the anode end of the diode D6 is respectively connected with a collector of a triode Q10 and a pin III of an error relay K2, the base of the triode Q10 is respectively connected with one end of a resistor R67 and one end of the resistor R51, the other end of the resistor R51 is connected with a singlechip circuit, the emitter of the triode Q10 and the other end of the resistor R67 are respectively grounded, the error relay K2 pin III is connected with an alarm connecting terminal CN1 pin II, and the error relay K2 pin IV is connected with an alarm connecting terminal CN1 pin I.
The utility model has the advantages that:
the utility model discloses singlechip circuit receives transmission infrared ray intensity control signal processing circuit according to infrared receiving circuit and adjusts infrared transmitting circuit transmission infrared ray intensity, and when adjusting infrared ray intensity and reaching suitable magnification and making signal intensity steady in the certain limit, the completion is adjusted promptly to the product, has realized that infrared ray beam feels the proper motion sensitivity of cigarette and has adjusted, the debug time of the installation of very big simplification.
[ description of the drawings ]
FIG. 1 is a circuit diagram of the present invention;
FIG. 2 is a schematic diagram of a circuit of the single chip microcomputer according to the present invention;
FIG. 3 is a schematic diagram of the infrared emitting circuit of the present invention;
fig. 4 is a schematic diagram of the infrared receiving circuit and the signal processing circuit of the present invention;
fig. 5 is a schematic diagram of the positioning calibration circuit of the present invention;
FIG. 6 is a schematic diagram of the alarm/error output circuit of the present invention;
FIG. 7 is a schematic view of the communication circuit of the present invention;
FIG. 8 is a schematic diagram of a power input circuit of the present invention;
fig. 9 is a schematic diagram of the circuit of the indicator light of the present invention.
[ detailed description of the invention ]
The following description is further detailed with reference to the accompanying drawings and embodiments of the present invention:
as shown in fig. 1-9, a linear beam smoke fire detector capable of self-adjusting sensitivity comprises a single chip circuit 1 arranged in the detector, the single chip circuit 1 is connected with an infrared transmitting circuit 2 for transmitting infrared outwards, an infrared receiving circuit 3 for receiving infrared reflected by a reflecting device, a positioning calibration circuit 4 for calibrating the angle of the detector to enable the infrared receiving circuit 3 to receive the reflected infrared, a signal processing circuit 5 for adjusting the intensity of the infrared transmitted by the infrared transmitting circuit 2 according to the intensity of the infrared received by the infrared receiving circuit 3, and an alarm/error output circuit 6 for smoke detection alarm and abnormal error detection. When the detector is installed and debugged, the single chip circuit 2 in the detector controls the infrared transmitting circuit 2 to transmit infrared rays outwards, the infrared receiving circuit 3 receives the infrared rays transmitted outwards and reflects the infrared rays through the transmitting device, the angle of the infrared receiving circuit 3 is adjusted through the positioning and calibrating circuit 4 to enable the infrared receiving circuit 3 to reach a proper receiving angle, then the single chip circuit 1 adjusts the strength of the infrared transmitting circuit 2 through the signal processing circuit 5 according to the intensity of the reflected infrared rays received by the infrared receiving circuit 3, and adjusts the intensity of the infrared rays to reach a proper amplification factor to enable the signal intensity to be stable within a certain range, so that the self-sensitivity adjustment of the infrared light beam smoke sensing is realized; in practical application, when smoke blocks an infrared light path, a reflected infrared signal received by the infrared receiving circuit 3 is weakened, and when the reflected infrared signal is weakened to a certain threshold value, the single chip microcomputer circuit 1 controls the alarm/error output circuit 6 to send out an alarm prompt. The single chip microcomputer circuit 1 presets an initial value after debugging reflected infrared rays and a preset reflected infrared ray measurement interval, and the initial value after debugging the reflected infrared rays is in the preset reflected infrared ray measurement interval; when the reflected infrared ray detection value received by the infrared receiving circuit 3 of the detector is maintained at an excessively high or excessively low value in a preset reflected infrared ray measurement interval, the single chip microcomputer circuit 1 controls the alarm/error output circuit 6 to send out an error prompt.
As shown in fig. 1, a power input circuit 8 for supplying power is also arranged in the detector; the singlechip circuit 1 is connected with a communication circuit 7 for communicating outwards and can be connected with a background server for monitoring and prompting; the single chip circuit 1 is connected with an indicator light circuit 9 for displaying the working state.
As shown in fig. 3, the circuit structure of the infrared emission circuit 2 includes a driving control chip U1 connected in sequence, a pin of the driving control chip U1 is connected to a 5V power supply and one end of a capacitor C8, the other end of the capacitor C8 is grounded, a pin of the driving control chip U1 is connected to a pin of the driving control chip U1 and one end of a resistor R4, the other end of the resistor R4 is connected to the positive terminals of the single chip microcomputer circuit 1 and the diode D2, the negative terminal of the diode D2 is connected to the 3.3V power supply, a pin of the driving control chip U1 is connected to one end of a resistor R31 and a pin of the driving control chip U1, a pin of the driving control chip U1 is grounded, a pin of the driving control chip U1 is connected to one end of a resistor R3 and one end of a resistor R30, the other end of the resistor R3 is grounded, the other end of the resistor R3 is connected to the 5V power supply, and the other end of the resistor R31 is connected to a pin Q1 of the light emitting control chip Q1, One end of a resistor R1 is connected, the other end of the resistor R1 is grounded, a pin I of a driving control chip U1 is respectively connected with one end of a resistor R5 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R5 is respectively connected with one end of a resistor R26 and a base of a triode Q4, the other end of the resistor R26 and an emitter of a triode Q4 are respectively grounded, a collector of a triode Q4 is respectively connected with a pin I of an operational amplifier U3 and a collector of a triode Q3, a base of the triode Q3 is respectively connected with one end of a resistor R27 and one end of a resistor R27, the other end of the resistor R27 is connected with a single chip circuit 1, a transmitter of the triode Q27 and the other end of the resistor R27 are respectively grounded, a pin III of the operational amplifier U27 is respectively connected with one end of the resistor R27 and one end of the resistor R27, the other end of the resistor R27 is connected with a 3.3V power supply, the other end of the amplifier V, the resistor R27 is grounded, the pin II is respectively connected with a power supply, the other end of the capacitor C2 is grounded, a pin R3 of the operational amplifier is respectively connected with a pin (R) 1 of the light-emitting control chip Q1, a pin (R) 1 of the light-emitting control chip Q1 and one end of a resistor R28 through a resistor R25, the other end of the resistor R28 is grounded, a pin (R) 1 of the light-emitting control chip Q1 is respectively connected with a pin (C) 1 of the light-emitting control chip Q1 and the negative end of the infrared emission tube U2, the positive end of the infrared emission tube U2 is respectively connected with the 24V power supply, the positive end of the electrolytic capacitor C10 and one end of the capacitor C11 through a resistor R2, and the negative end of the electrolytic capacitor C10 and the negative end of the capacitor C11 are respectively grounded.
As shown in fig. 4, the circuit structure of the signal processing circuit 5 includes a signal processing chip U5, a pin U5 of the signal processing chip is connected to a 5V power supply and one end of a capacitor C32, the other end of the capacitor C32 is grounded, a pin U5 of the signal processing chip is grounded, a pin U5 of the signal processing chip and a pin U5 of the signal processing chip are connected to the single chip microcomputer circuit 1, a pin U5 of the signal processing chip is connected to one end of a capacitor C19, a pin U16.1 of an operational amplifier and one end of a resistor R16 through a resistor R56, the other end of the resistor R16 is grounded, the other end of the capacitor C19 is connected to a pin U5 of the signal processing chip, a pin U16.1 of the operational amplifier and one end of the capacitor C7, a pin U16.1 of the operational amplifier is connected to the 5V power supply, a pin U16.1 of the operational amplifier is grounded, a pin U16.1 of the operational amplifier is connected to one end of the resistor R100, a pin U16.2 and a pin 9 through a resistor R15, pin eight of operational amplifier U15.2 is connected with 5V power supply, pin four of operational amplifier U15.2 is grounded, pin six of operational amplifier U15.2 is connected with another end of resistor R100 and one end of resistor R6 respectively, another end of resistor R6 is grounded, pin five of operational amplifier U15.2 is connected with another end of resistor R9, one end of capacitor C2 and one end of resistor R7 respectively through capacitor C1, another end of capacitor C2 is grounded, another end of resistor R7 is connected with one end of resistor R13 and one end of operational amplifier U15.1 respectively, pin eight of operational amplifier U15.1 is connected with 5V power supply, pin four of operational amplifier U15.1 is grounded, pin seven of operational amplifier U15.1 is connected with another end of resistor R13 and one end of resistor R14 respectively, another end of resistor R14 is grounded, pin three of operational amplifier U15.1 is connected with infrared receiving circuit 3 through resistor R12 and C3 in turn, another end of capacitor C48 is connected with one end of resistor R22 and another end of operational amplifier U21, and a pin (iv) of the operational amplifier (U16.2) is grounded, a pin (V) of the operational amplifier (U16.2) is connected with the other end of the resistor (R21), one end of the capacitor (C16) and the 5V power supply respectively, the other end of the capacitor (C16) is grounded, a pin (V) of the operational amplifier (U16.2) is connected with a pin (C) of the operational amplifier (U16.2) and one end of the resistor (R37) respectively, and the other end of the resistor (R37) is connected with the single chip microcomputer circuit (1).
As shown in fig. 5, the positioning calibration circuit 4 includes a positioning calibration chip U1, and the positioning calibration chip U1 is connected to the single chip microcomputer circuit 1 and a display LED1 for displaying an adjustment angle.
As shown in fig. 6, the circuit structure of the alarm/error output circuit 6 includes an alarm connection terminal CN1, an alarm connection terminal CN1 pin b is connected with a 24V power supply, an alarm connection terminal CN1 pin b is grounded, an alarm connection terminal CN1 pin b is connected with an alarm relay K1 pin b and an alarm relay K1 pin b, an alarm relay K1 pin b is connected with a diode D3 negative electrode terminal and a resistor R64 terminal, a resistor R64 terminal is connected with a 24V power supply, a diode D3 positive electrode terminal is connected with a triode Q5 collector and an alarm relay K1 pin b, a triode Q5 base is connected with a resistor R44 terminal and a resistor R66 terminal, a resistor R44 other terminal is connected with a single chip microcomputer circuit 1, a triode Q5 emitter and a resistor R66 terminal are grounded, an alarm relay K1 pin b is connected with an alarm connection terminal CN1 pin b, an alarm relay K1 pin b is connected with an alarm relay CN1 terminal CN1, the alarm connecting terminal CN1 pin III is respectively connected with an error relay K2 pin I and an error relay K2 pin II, the error relay K2 pin II is respectively connected with one end of a resistor R65 and a cathode end of a diode D6, the other end of the resistor R65 is connected with a 24V power supply, the anode end of the diode D6 is respectively connected with a collector of a triode Q10 and a pin III of an error relay K2, the base of the triode Q10 is respectively connected with one end of a resistor R67 and one end of a resistor R51, the other end of the resistor R51 is connected with the single chip microcomputer circuit 1, the emitter of the triode Q10 and the other end of the resistor R67 are respectively grounded, the error relay K2 pin III is connected with the alarm connecting terminal CN1 pin II, and the error relay K2 pin IV is connected with the alarm connecting terminal CN1 pin I.
Claims (8)
1. A linear light beam smoke fire detector capable of automatically adjusting sensitivity is characterized in that: the smoke detector comprises a single chip microcomputer circuit (1) arranged in a detector, wherein the single chip microcomputer circuit (1) is connected with an infrared transmitting circuit (2) used for transmitting infrared outwards, an infrared receiving circuit (3) used for receiving infrared reflected by a reflecting device, a positioning calibration circuit (4) used for calibrating the angle of the detector to enable the infrared receiving circuit (3) to receive the reflected infrared, a signal processing circuit (5) used for adjusting the intensity of the infrared transmitted by the infrared transmitting circuit (2) according to the intensity of the infrared received by the infrared receiving circuit (3), and an alarm/error output circuit (6) used for smoke detection alarm and detection abnormity error reporting.
2. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the singlechip circuit (1) is connected with a communication circuit (7) for communicating outwards.
3. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the detector is also internally provided with a power input circuit (8) for supplying power.
4. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the single chip circuit (1) is connected with an indicator light circuit (9) for displaying the working state.
5. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the infrared emission circuit (2) comprises a drive control chip U1 which are connected in sequence, a pin ((V) of a drive control chip U1) is respectively connected with a 5V power supply and one end of a capacitor C8), the other end of the capacitor C8 is grounded, a pin ((C) of the drive control chip U1) is respectively connected with a pin ((C) of a drive control chip U1) and one end of a resistor R4, the other end of a resistor R4 is respectively connected with a singlechip circuit (1) and the anode end of a diode D2), the cathode end of a diode D2 is connected with a 3.3V power supply, a pin ((C) of the drive control chip U1) is respectively connected with one end of a resistor R31 and a pin ((C) of a drive control chip U1), a pin ((U1) of the drive control chip is grounded, a pin ((C) of the drive control chip U1) is respectively connected with one end of a resistor R3 and one end of a resistor R30, the other end of a resistor R3 is grounded, the other end of the resistor R3 is connected with a 5V power supply, and the other end of a resistor R31 is respectively connected with one end of a pin 1 of a resistor R1, the other end of the resistor R1 is grounded, the pin R1 of the driving control chip is respectively connected with one end of a resistor R5 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R5 is respectively connected with one end of a resistor R26 and the base of a triode Q4, the other end of the resistor R26 and the emitter of a triode Q4 are respectively grounded, the collector of a triode Q4 is respectively connected with the pin R3 of the operational amplifier and the collector of a triode Q3, the base of a triode Q3 is respectively connected with one end of a resistor R27 and one end of a resistor R29, the other end of the resistor R29 is connected with the single chip circuit (1), the transmitter of the triode Q29 and the other end of the resistor R29 are respectively grounded, the pin III of the operational amplifier U29 is respectively connected with one end of the resistor R29 and one end of the resistor R29, the other end of the resistor R29 is connected with a 3.3V power supply, the other end of the resistor R29 is grounded, the pin II of the operational amplifier U29 is grounded, the pin III is connected with one end of the capacitor C29, a pin (R) of an operational amplifier (U3) is respectively connected with a pin (R) of a light-emitting control chip (Q1), a pin (R) of a light-emitting control chip (Q1) and one end of a resistor (R28) through a resistor (R25), the other end of the resistor (R28) is grounded, a pin (R) of a light-emitting control chip (Q1) is respectively connected with a pin (C) of the light-emitting control chip (Q1) and a negative end of an infrared emission tube (U2), a positive end of the infrared emission tube (U2) is respectively connected with a 24V power supply, a positive end of an electrolytic capacitor (C10) and one end of a capacitor (C11) through a resistor (R2), and a negative end of an electrolytic capacitor (C10) and a negative end of a capacitor (C11) are respectively grounded.
6. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the signal processing circuit (5) comprises a signal processing chip U5, a pin I of the signal processing chip U5 is respectively connected with a 5V power supply and one end of a capacitor C32, the other end of the capacitor C32 is grounded, a pin II of the signal processing chip U5 is grounded, a pin III of the signal processing chip U5 and a pin III of the signal processing chip U5 are respectively connected with the single chip microcomputer circuit (1), a pin III of the signal processing chip U5 is respectively connected with one end of a capacitor C19, a pin III of an operational amplifier U16.1 and one end of a resistor R16 through a resistor R56, the other end of a resistor R16 is grounded, the other end of the capacitor C19 is respectively connected with a pin III of the signal processing chip U5, one end of an operational amplifier U16.1 and one end of a capacitor C7, a pin III of the operational amplifier U16.1 is connected with the 5V power supply, a pin III of the operational amplifier U16.1 is grounded, a pin III of the operational amplifier U16.1 is respectively connected with one end of a resistor R15, one end of the operational amplifier U15.2 is connected with a pin III of the amplifier V power supply, a pin III of the operational amplifier U9, pin 15.2 of operational amplifier U15.2 grounded, pin 15.2 connected to the other end of resistor R100 and resistor R6, pin R6 grounded, pin 15.2 connected to resistor R9, capacitor C2 and resistor R7 through C1, pin C2 grounded, pin R7 connected to resistor R13 and U15.1, pin U15.1 connected to 5V power supply, pin U15.1 grounded, pin 15.1 connected to resistor R13 and resistor R14, pin R48 grounded, pin U15.1 connected to infrared receiver circuit through resistor R12 and capacitor C3, pin C2 connected to resistor R638, pin R22, pin R22, pin R2 grounded, pin R6316.2 grounded, pin R6316 connected to resistor R22 and resistor R22, pin R22 and resistor R22, One end of a capacitor C16 is connected with a 5V power supply, the other end of a capacitor C16 is grounded, a pin (16.2) of an amplifier U is connected with a pin (16.2) of the amplifier U and one end of a resistor R37 respectively, and the other end of the resistor R37 is connected with a single chip microcomputer circuit (1).
7. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the positioning calibration circuit (4) comprises a positioning calibration chip U1, and the positioning calibration chip U1 is respectively connected with the single chip circuit (1) and a display LED1 for displaying an adjusting angle.
8. A self-adjustable sensitivity linear beam smoke fire detector as defined in claim 1, wherein: the alarm/error output circuit (6) comprises an alarm connecting terminal CN1, an alarm connecting terminal CN1 pin b is connected with a 24V power supply, an alarm connecting terminal CN1 pin b is grounded, an alarm connecting terminal CN1 pin b is respectively connected with an alarm relay K1 pin b and an alarm relay K1 pin b, an alarm relay K1 pin b is respectively connected with a diode D3 negative electrode end and a resistor R64 end, a resistor R64 other end is connected with a 24V power supply, a diode D3 positive electrode end is connected with a triode Q5 collector and an alarm relay K1 pin b, a triode Q5 base is respectively connected with a resistor R44 end and a resistor R66 end, a resistor R44 other end is connected with a singlechip circuit (1), a triode Q5 emitter and a resistor R66 other end are respectively grounded, an alarm relay K1 pin b is connected with an alarm connecting terminal CN1 pin b, an alarm relay K1 pin b is connected with an alarm connecting terminal CN1, the alarm connecting terminal CN1 pin III is respectively connected with an error relay K2 pin I and an error relay K2 pin II, the error relay K2 pin II is respectively connected with one end of a resistor R65 and a cathode end of a diode D6, the other end of the resistor R65 is connected with a 24V power supply, the anode end of the diode D6 is respectively connected with a collector of a triode Q10 and a pin III of an error relay K2, the base of the triode Q10 is respectively connected with one end of a resistor R67 and one end of a resistor R51, the other end of the resistor R51 is connected with a singlechip circuit (1), the emitter of the triode Q10 and the other end of the resistor R67 are respectively grounded, the error relay K2 pin III is connected with the alarm connecting terminal CN1 pin II, and the error relay K2 pin IV is connected with the alarm connecting terminal CN1 pin I.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121139780.XU CN214670988U (en) | 2021-05-26 | 2021-05-26 | Linear light beam smoke fire detector capable of automatically adjusting sensitivity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121139780.XU CN214670988U (en) | 2021-05-26 | 2021-05-26 | Linear light beam smoke fire detector capable of automatically adjusting sensitivity |
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| CN214670988U true CN214670988U (en) | 2021-11-09 |
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| CN202121139780.XU Active CN214670988U (en) | 2021-05-26 | 2021-05-26 | Linear light beam smoke fire detector capable of automatically adjusting sensitivity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116481988A (en) * | 2023-04-27 | 2023-07-25 | 营口天成消防设备有限公司 | Automatic adjusting method for reflection type linear light beam smoke fire detector |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116481988A (en) * | 2023-04-27 | 2023-07-25 | 营口天成消防设备有限公司 | Automatic adjusting method for reflection type linear light beam smoke fire detector |
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