CN211044470U - Explosion-proof intelligent wireless smoke detector - Google Patents
Explosion-proof intelligent wireless smoke detector Download PDFInfo
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- CN211044470U CN211044470U CN201921396060.4U CN201921396060U CN211044470U CN 211044470 U CN211044470 U CN 211044470U CN 201921396060 U CN201921396060 U CN 201921396060U CN 211044470 U CN211044470 U CN 211044470U
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Abstract
The utility model discloses an explosion-proof intelligent wireless smoke detector, which comprises a singlechip, a smoke concentration detector, a temperature and humidity detector, a light intensity detector, a wireless communication module, a wireless repeater and a power module, wherein the singlechip is respectively connected with the smoke concentration detector, the temperature and humidity detector and the light intensity detector, the singlechip is connected with the wireless repeater through the wireless communication module, and the power module is connected with the singlechip; the power module comprises a power supply, a control chip, a first resistor, a first capacitor, a first MOS (metal oxide semiconductor) tube, a first diode, a second resistor, a third resistor, a first triode, a first inductor, a fourth resistor, a second capacitor and a voltage output end, wherein the power supply is connected with the voltage input end of the control chip, and the power end of the control chip is respectively connected with one end of the first resistor, one end of the first capacitor and the source electrode of the first MOS tube. The utility model discloses the security and the reliability of circuit are higher.
Description
Technical Field
The utility model relates to a smoke detector field, in particular to explosion-proof intelligent wireless smoke detector.
Background
The smoke-sensing fire alarm detector is used for detecting smoke concentration change, and in order to meet diversified requirements of users, the wireless smoke-sensing detector capable of transmitting data in a wireless mode appears. Some wireless smoke detector among the prior art except this common function of detectable smog concentration, still have functions such as detectable humiture, illuminance, can revise the smoke alarm threshold value according to temperature and illuminance simultaneously, have improved detector smoke detection sensitivity, and accessible cell-phone makes the detector reset during the warning, and convenient and practical has richened smoke fire detector's function, has satisfied user's demand. However, the power supply portion of the conventional wireless smoke detector lacks the corresponding circuit protection functions, such as: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide the security of a circuit and the higher explosion-proof intelligent wireless smoke detector of reliability.
The utility model provides a technical scheme that its technical problem adopted is: the explosion-proof intelligent wireless smoke detector comprises a single chip microcomputer, a smoke concentration detector, a temperature and humidity detector, a light intensity detector, a wireless communication module, a wireless repeater and a power supply module, wherein the single chip microcomputer is respectively connected with the smoke concentration detector, the temperature and humidity detector and the light intensity detector, the single chip microcomputer is connected with the wireless repeater through the wireless communication module, and the power supply module is connected with the single chip microcomputer;
the power module comprises a power supply source, a control chip, a first resistor, a first capacitor, a first MOS (metal oxide semiconductor) tube, a first diode, a second resistor, a third resistor, a first triode, a first inductor, a fourth resistor, a second capacitor and a voltage output end, wherein the power supply source is connected with the voltage input end of the control chip, the power end of the control chip is respectively connected with one end of the first resistor, one end of the first capacitor and the source electrode of the first MOS tube, the grid electrode of the first MOS tube is respectively connected with the other end of the first resistor, the other end of the first capacitor and the anode of the first diode, the cathode of the first diode is connected with the collector of the first triode, one end of the second resistor is connected with the control end of the control chip, the other end of the second resistor is respectively connected with one end of the third resistor and the base electrode of the first triode, the other end of the third resistor and the emitter of the first triode are both grounded, the drain electrode of the first MOS tube is connected with one end of the first inductor, the other end of the first inductor is respectively connected with one end of the first resistor, one end of the first capacitor, the cathode of the first diode is connected with the negative electrode of the first resistor 352, and the negative electrode of the first capacitor are both connected with the ground, and the negative electrode of the first.
In the wireless smoke detector of explosion-proof intelligence, power module still includes fifth resistance, the one end of fifth resistance respectively with the other end of first inductance and the one end of fourth resistance are connected, the other end of fifth resistance respectively with the positive pole and the voltage output end of second electric capacity are connected, the resistance of fifth resistance is 36k omega.
In the explosion-proof intelligent wireless smoke detector, the first triode is an NPN type triode.
In the explosion-proof intelligent wireless smoke detector, the first MOS tube is a P-channel MOS tube.
Among the wireless smoke detector of explosion-proof intelligence supply voltage is 5V.
Implement the utility model discloses a smoke detector is wirelessly felt to explosion-proof intelligence has following beneficial effect: the smoke concentration detector is arranged on the smoke outlet of the smoke outlet device, and the smoke outlet device is arranged on the smoke outlet device; the power module comprises a power supply, a control chip, a first resistor, a first capacitor, a first MOS (metal oxide semiconductor) tube, a first diode, a second resistor, a third resistor, a first triode, a first inductor, a fourth resistor, a second capacitor and a voltage output end, wherein the first diode is used for current-limiting protection, so that the safety and the reliability of the circuit are high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the explosion-proof intelligent wireless smoke detector of the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses in the embodiment of explosion-proof intelligent wireless smoke detector, this explosion-proof intelligent wireless smoke detector's structural schematic is as shown in figure 1. In fig. 1, this wireless smoke detector of explosion-proof intelligence includes singlechip 1, smog concentration detector 2, temperature and humidity detector 3, illuminance detector 4, wireless communication module 5, wireless repeater 6 and power module 7, and wherein, singlechip 1 is connected with smog concentration detector 2, temperature and humidity detector 3 and illuminance detector 4 respectively, and singlechip 1 passes through wireless communication module 5 and is connected with wireless repeater 6, and power module 7 is connected with singlechip 1.
The wireless communication module 5 performs wireless communication with the wireless repeater 6, and the wireless repeater 6 performs wireless communication with a terminal device (a mobile phone, a tablet computer, or the like).
And the temperature and humidity detector 3 corrects the smoke sensing alarm threshold value according to the detected temperature, reduces the smoke sensing alarm threshold value when the temperature is high, and increases the smoke sensing alarm threshold value when the temperature is low so as to improve the smoke sensing detection sensitivity of the explosion-proof intelligent wireless smoke sensing detector. The illuminance detector 4 corrects the smoke-sensitive alarm threshold value according to the detected illuminance, reduces the smoke-sensitive alarm threshold value at night or when the light is weak, and increases the smoke-sensitive alarm threshold value in the daytime or when the light is strong, so that the smoke detection sensitivity of the explosion-proof intelligent wireless smoke detector is improved.
The utility model discloses the humiture numerical value and the illumination numerical value conveying that will detect at regular interval under the usual state convey to wireless repeater 6, and wireless repeater 6 rethread wireless mode conveys humiture numerical value and illumination numerical value to terminal equipment. The utility model discloses convey alarm information to wireless repeater 6 during the warning, 6 rethread wireless modes of wireless repeater convey alarm information to terminal equipment.
The explosion-proof intelligent wireless smoke detector detects the environment (smoke concentration, temperature and humidity, illuminance and the like) near a monitoring point, sends out sound and light alarm signals when the smoke concentration exceeds a set range, prompts the environmental comfort level by temperature and humidity values, corrects a smoke-sensitive alarm threshold value according to the temperature, reduces the smoke-sensitive alarm threshold value when the temperature is high so as to improve the smoke-sensitive detection sensitivity of the detector, and increases the smoke-sensitive alarm threshold value when the temperature is low so as to improve the smoke-sensitive detection sensitivity of the detector; illuminance numerical value suggestion ambient light is strong and weak, can distinguish daytime and night according to this to revise smoke alarm threshold, reduce smoke alarm threshold during night, with the smoke detection sensitivity of improvement detector, light risees smoke alarm threshold when stronger, with the smoke detection sensitivity of improving this explosion-proof intelligent wireless smoke detector.
Fig. 2 is a schematic circuit diagram of a power module in this embodiment, in fig. 2, the power module 7 includes a power supply Vin, a control chip U, a first resistor R, a first capacitor C, a first MOS transistor M, a first diode D, a second resistor R, a third resistor R, a first triode Q, a first inductor 1, a fourth resistor R, a second capacitor C, and a voltage output terminal Vo, where the power supply Vin is connected to a voltage input terminal of the control chip U, a power supply terminal VCC of the control chip U is connected to one end of the first resistor R, one end of the first capacitor C and a source of the first MOS transistor M, a gate of the first MOS transistor M is connected to the other end of the first resistor R, the other end of the first capacitor C and an anode of the first diode D, a cathode of the first diode D is connected to a collector of the first triode Q, one end of the second resistor R is connected to a control terminal of the control chip U, the other end of the second resistor R is connected to one end of the third resistor R and a base of the first diode Q, a cathode of the first resistor R is connected to a base of the first triode R, a drain of the first resistor R is connected to a cathode of the first resistor R, a drain of the first resistor R is connected to a drain of the first transistor Q, a drain of the first resistor R is connected to a drain of the first resistor R, and a drain of the first resistor.
The first diode D1 is a current-limiting diode for current-limiting protection, and the current-limiting protection is based on the principle that when the current of the branch where the first diode D1 is located is large, the current of the branch where the first diode D1 is located can be reduced by the first diode D1, so that the branch can be kept in a normal working state, and the component in the circuit is not burned out due to the large current, so that the safety and reliability of the circuit are high.
In this embodiment, the first inductor L1, the fourth resistor R4, and the second capacitor C2 form an anti-capacitance circuit, the first inductor L1 is used to effectively filter out ac noise with a large frequency, and the fourth resistor R4 and the second capacitor C2 are used to effectively filter out ac noise with a small frequency and stabilize output voltage.
The second resistor R2, the third resistor R3 and the first triode Q1 form a driving circuit. The control chip U1 is an existing control chip, and is intended to control voltage output, and is not limited to a specific type of control chip. The model number of the first MOS transistor M1 is MI 3407.
The working principle of the power module 7 is as follows: direct current voltage enters a control chip U1 from a voltage input end of the control chip U1 for voltage conversion, then a control end EN of the control chip U1 provides a working voltage, a collector of a first triode Q1 outputs a control voltage, a grid of a first MOS tube M1 obtains a control voltage, a PN junction between a drain electrode and a source electrode of the first MOS tube M1 is conducted, and then the output voltage is directly output to a filter circuit (a fourth resistor R4 and a second capacitor C2) from a power supply end VCC of the control chip U1 through the first MOS tube M1; the filter circuit filters the output voltage to obtain a stable output voltage and inputs the stable output voltage to the single chip microcomputer 1, so that the purposes of filtering noise and outputting the stable voltage are achieved.
In this embodiment, the supply voltage of the power supply Vin is 5V. Of course, in practical applications, the magnitude of the supply voltage of the power supply Vin may be adjusted according to specific situations, that is, the magnitude of the supply voltage of the power supply Vin may be increased or decreased according to specific situations.
In this embodiment, the first transistor Q1 is an NPN transistor, and the first MOS transistor M1 is a P-channel MOS transistor. Certainly, in practical applications, the first transistor Q1 may also be a PNP transistor, and the first MOS transistor M1 may also be an N-channel MOS transistor, but the structure of the circuit is also changed accordingly.
In this embodiment, the power module 7 further includes a fifth resistor R5, one end of the fifth resistor R5 is connected to the other end of the first inductor L and one end of the fourth resistor R4, and the other end of the fifth resistor R5 is connected to the positive electrode of the second capacitor C2 and the voltage output end Vo, the fifth resistor R5 is a current-limiting resistor for current-limiting protection, the principle of the current-limiting protection is as follows, when the current of the branch in which the fifth resistor R5 is located is large, the current of the branch in which the fifth resistor R5 is located can be reduced by the fifth resistor R5, so that the current is kept in a normal operating state, and the component in the circuit is not burned out due to the large current, so as to further enhance the safety and reliability of the circuit.
In short, in the present embodiment, the current-limiting diode is provided in the power module 7, so that the safety and reliability of the circuit are high.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An explosion-proof intelligent wireless smoke detector is characterized by comprising a single chip microcomputer, a smoke concentration detector, a temperature and humidity detector, a illuminance detector, a wireless communication module, a wireless repeater and a power supply module, wherein the single chip microcomputer is respectively connected with the smoke concentration detector, the temperature and humidity detector and the illuminance detector, the single chip microcomputer is connected with the wireless repeater through the wireless communication module, and the power supply module is connected with the single chip microcomputer;
the power module comprises a power supply source, a control chip, a first resistor, a first capacitor, a first MOS (metal oxide semiconductor) tube, a first diode, a second resistor, a third resistor, a first triode, a first inductor, a fourth resistor, a second capacitor and a voltage output end, wherein the power supply source is connected with the voltage input end of the control chip, the power end of the control chip is respectively connected with one end of the first resistor, one end of the first capacitor and the source electrode of the first MOS tube, the grid electrode of the first MOS tube is respectively connected with the other end of the first resistor, the other end of the first capacitor and the anode of the first diode, the cathode of the first diode is connected with the collector of the first triode, one end of the second resistor is connected with the control end of the control chip, the other end of the second resistor is respectively connected with one end of the third resistor and the base electrode of the first triode, the other end of the third resistor and the emitter of the first triode are both grounded, the drain electrode of the first MOS tube is connected with one end of the first inductor, the other end of the first inductor is respectively connected with one end of the first resistor, one end of the first capacitor, the cathode of the first diode is connected with the negative electrode of the first resistor 352, and the negative electrode of the first capacitor are both connected with the ground, and the negative electrode of the first.
2. The explosion-proof intelligent wireless smoke detector according to claim 1, wherein the power module further comprises a fifth resistor, one end of the fifth resistor is connected with the other end of the first inductor and one end of the fourth resistor respectively, the other end of the fifth resistor is connected with the anode of the second capacitor and the voltage output end respectively, and the resistance value of the fifth resistor is 36k Ω.
3. The explosion-proof intelligent wireless smoke detector according to claim 1 or 2, wherein the first triode is an NPN-type triode.
4. The explosion-proof intelligent wireless smoke detector according to claim 1 or 2, wherein the first MOS transistor is a P-channel MOS transistor.
5. The explosion-proof intelligent wireless smoke detector according to claim 1 or 2, wherein the power supply voltage of the power supply is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921396060.4U CN211044470U (en) | 2019-08-26 | 2019-08-26 | Explosion-proof intelligent wireless smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921396060.4U CN211044470U (en) | 2019-08-26 | 2019-08-26 | Explosion-proof intelligent wireless smoke detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211044470U true CN211044470U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921396060.4U Active CN211044470U (en) | 2019-08-26 | 2019-08-26 | Explosion-proof intelligent wireless smoke detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211044470U (en) |
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2019
- 2019-08-26 CN CN201921396060.4U patent/CN211044470U/en active Active
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