CN211427474U - Smoke detection alarm circuit of urban traffic guidance terminal drive test perception decision terminal - Google Patents
Smoke detection alarm circuit of urban traffic guidance terminal drive test perception decision terminal Download PDFInfo
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- CN211427474U CN211427474U CN201922251188.8U CN201922251188U CN211427474U CN 211427474 U CN211427474 U CN 211427474U CN 201922251188 U CN201922251188 U CN 201922251188U CN 211427474 U CN211427474 U CN 211427474U
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Abstract
The utility model discloses a smoke detection alarm circuit for a city traffic induction terminal drive test perception decision-making terminal, which comprises an MCU chip, an RS485 communication chip, a smoke induction alarm chip, an ion type smoke sensor and a power management circuit, wherein the power management circuit provides power for the MCU chip, the RS485 communication chip and the smoke induction alarm chip; the MCU chip and the RS485 communication chip are in signal feedback connection with each other; the MCU chip is in signal connection with the smoke sensing alarm chip; the smoke sensing alarm chip is in signal connection with the ion type smoke sensor. The utility model has the advantages of easy operation, the accurate sensitivity of sensing, practicality are strong, the integrated level is high, reliable stable.
Description
Technical Field
The utility model relates to a smog detection alarm circuit at induced terminal drive test perception decision-making terminal of urban traffic belongs to communication electron technical field.
Background
Along with the development of communication and electronic technology, the intelligent system of the urban traffic guidance terminal is more and more perfect, and the monitoring center can monitor the public environment of urban traffic in real time, so that guarantee is provided for public safety. Under the condition that a smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision-making terminal gives out smoke alarm, the monitoring center can give out an emergency scheme in time. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal has the advantages of high integration, high sensitivity and high stability, and can be matched with a control card for use.
Disclosure of Invention
The utility model aims at overcoming the not enough of the unable perception way survey smog detection and warning of induced terminal of urban traffic, providing a high integrated, the smog detection alarm circuit at the induced terminal way survey perception decision-making terminal of urban traffic of high stability, this circuit can realize the smog condition of the induced terminal way survey of long-range online real time monitoring urban traffic, ensures urban traffic's normal clear, maintains urban road traffic's public safety.
The utility model discloses a realize through following technical scheme:
a smoke detection alarm circuit of a road test sensing decision terminal of an urban traffic guidance terminal comprises an MCU chip, an RS485 communication chip, a smoke sensing alarm chip, an ion type smoke sensor and a power management circuit, wherein the power management circuit provides power for the MCU chip, the RS485 communication chip and the smoke sensing alarm chip; the MCU chip and the RS485 communication chip are in signal feedback connection with each other; the MCU chip is in signal connection with the smoke sensing alarm chip; the smoke sensing alarm chip is in signal connection with the ion type smoke sensor.
After the power management circuit is started, the power management circuit supplies power to the MCU chip, the RS485 communication chip and the smoke sensing alarm chip respectively, the ion type smoke sensor detects an environment smoke concentration value and sends the environment smoke concentration value to the smoke alarm chip, when the environment smoke concentration value exceeds a normal value, the smoke alarm chip sends a smoke alarm signal to the MCU chip, and the MCU chip uploads the alarm information to the monitoring center through the RS485 chip conversion circuit.
The specific connection mode of the smoke alarm chip is as follows: a VSS pin of the smoke alarm chip, one end of a capacitor C3, one end of a resistor R6, a pin 3 of the ionic smoke sensor, one end of a test key S1 and one end of a capacitor C4 are connected with a ground end GND;
VDD of the smoke alarm chip, one end of a resistor R1, the positive terminal of an LED1, one end of a resistor R7, the other end of a capacitor C4 and 4 pins of a wire board connector J1 are connected with a power supply end + 9V;
the 2 feet of the smoke alarm chip are connected with the other end of the R4;
the 5 feet of the smoke alarm chip are connected with a resistor R5;
the cathode of an indicator light LED1 of the smoke alarm circuit is connected with the other end of the resistor R5;
the pin 7 of the smoke alarm chip is connected with a resistor R7;
the 16 feet of the smoke alarm chip are connected with the 4 feet of the 14 feet surrounding the ion type smoke sensor;
the 15 feet of the smoke alarm chip are connected with the 4 feet of the ion type smoke sensor;
the 13 feet of the smoke alarm chip are connected with the other end of the resistor R6;
the 12 feet of the smoke alarm chip are connected with the other end of the capacitor C3;
the 1 pin of the ion type smoke sensor is connected with the 2 pin of the ion type smoke sensor, and the other end of the resistor R1 is connected;
the 2 feet of the ion type smoke sensor are connected with one end of a resistor R2, and a resistor R2 is connected with the other end of a test key S1;
the 3 feet of the ion type smoke sensor are connected with a ground end GND;
4 feet of the ion type smoke sensor are connected with 15 feet of the smoke sensing alarm chip;
the specific connection mode of the MCU chip is as follows: the PA9 pin of the MCU chip is connected with the 4 pins of the RS485 chip through a network with the USART _ TXD, and the PA10 pin of the MCU chip is connected with the 1 pin of the RS485 chip through a network with the USART _ RXD, so that the communication transmission between the alarm signal and the monitoring center is realized;
a PA15 pin of the MCU chip is connected with one end of a resistor R4 and one end of a resistor R3 through a network connection label SMK, so that the transmission of smoke alarm signals is realized;
the VSS pin of the MCU chip is connected with the ground end GND;
the VSSA pin of the MCU chip is connected with a ground end GND;
a VDD pin of the MCU chip is connected with a power supply end and is + 3.3V;
and the VDDA pin of the MCU chip is connected with the power supply end + 3.3V.
The pin 1 of the RS485 chip is connected with the pin PA10 of the MCU chip through a network with the reference number USART _ RXD.
The pin 2 of the RS485 chip is connected with the pin 3 of the RS485 chip;
a pin 3 of the RS485 chip is connected with one end of a resistor R11 and a pin 3 of the triode;
a pin 4 of the RS485 chip is connected with a pin PA9 of the MCU chip through a network connection label USART _ TXD, the pin 4 of the RS485 chip is connected with one end of a resistor R14, and the other end of the resistor R14 is connected with a pin 1 of the triode;
a pin 6 of the RS485 chip is connected with one end of a resistor R13 and one end of a resistor R12, and the other end of the resistor R12 is connected with one end of a bidirectional voltage stabilizer D4, one end of the bidirectional voltage stabilizer D3 and a pin 3 of a wire board connector socket J2;
a pin 7 of the RS485 chip is connected with one end of a resistor R10 and one end of a resistor R9, and the other end of a resistor R9 is connected with one end of a bidirectional voltage stabilizer D2, the other end of the bidirectional voltage stabilizer D3 and a pin 1 of a wire board connector socket J2;
the 8 pins of the RS485 chip, the other end of the resistor R11 and the other end of the resistor R13 are connected with a power supply end + 3.3V;
a pin 5 of the RS485 chip, a pin 2 of the triode Q1, the other end of the bidirectional voltage stabilizer D2, the other end of the bidirectional voltage stabilizer D4, the other end of the resistor R10 and a pin 2 of the wire board connector socket J2 are connected with a ground end GND;
a pin 1 of the power chip U2, a pin 2 of the wire board connector J1, a pin 3 of the wire board connector J1, one end of the bidirectional TVS tube D1, one end of the capacitor C1 and one end of the capacitor C2 are connected with a ground end GND;
the pin 2 of the power chip U2 and the other end of the capacitor C2 are connected with a power supply end + 3.3V;
the pin 3 of the power chip U2, the other end of the capacitor C1, the other end of the bidirectional TVS tube D1 and the pin 1 of the wire board connector J1 are connected with a power supply end + 5V.
According to the technical scheme, the invention has the beneficial effects that:
the utility model discloses, have easy operation, practicality strong, remote monitoring, reliable stable, advantage such as integrated level height. Meanwhile, a detection circuit and a protection circuit with corresponding functions are designed, so that the practicability and the safety of a system circuit are improved, and the stability of remote monitoring signal transmission is ensured.
The utility model is suitable for a long-range online real time monitoring urban traffic induced terminal drive test's smog condition ensures urban traffic's normal clear, maintains urban road traffic's public safety.
Drawings
Figure 1 is the overall connection state diagram of the utility model,
FIG. 2 is a structural diagram of the smoke alarm chip of the present invention,
figure 3 is the structure diagram of the MCU chip of the present invention,
fig. 4 is the structure diagram of the RS485 chip of the present invention.
Fig. 5 is a power management circuit structure diagram of the present invention.
Detailed Description
In order to make the technical content of the present invention more comprehensible, embodiments accompanied with figures are described below.
Combine fig. 1, the utility model discloses a smoke detection alarm circuit at induced terminal drive test perception decision-making terminal of urban traffic, power management circuit starts the back, power management circuit gives the MCU chip respectively, RS485 communication chip, the power supply of smoke sensor alarm chip, ionic type smoke transducer detects environment smog concentration value and sends for smog alarm chip, when environment smog concentration value exceedes the normal value, smog alarm chip will send smog alarm signal and give MCU to pass to the surveillance center on with alarm information through RS485 converting circuit by MCU.
With reference to fig. 2, the specific connection mode of the smoke alarm chip is as follows: the pin 2 of the smoke alarm chip is connected with one end of the R4, the other end of the resistor R4 is connected with one end of the R3 and is connected with the MCU through the network label SMK, and the transmission of smoke alarm signals is realized; the 5 pins of the smoke alarm chip are connected with the resistor R5, the anode of the indicator light LED1 is connected with the power supply end +9, and the cathode of the indicator light LED1 is connected with the other end of the resistor R5, so that the working state indication of the smoke alarm chip is realized; the 15 feet of the smoke sensing alarm chip are connected with the 4 feet of the ion type smoke sensor, so that the collection of smoke sensing signals is realized.
With reference to fig. 3, the specific connection mode of the MCU chip is as follows: the PA9 pin of the MCU chip is connected with the 4 pins of the RS485 chip through a network with the USART _ TXD, and the PA10 pin of the MCU chip is connected with the 1 pin of the RS485 chip through a network with the USART _ RXD, so that the communication transmission between the alarm signal and the monitoring center is realized; the PA15 pin of the MCU chip is connected with one end of the resistor R4 and one end of the resistor R3 through the network connection label SMK, so that the transmission of smoke alarm signals is realized.
With reference to fig. 4, the specific connection mode of the RS485 chip is as follows: a pin 1 of the RS485 chip is connected with a pin PA10 of the MCU chip through a network connection label USART _ RXD, and a pin 4 of the RS485 chip is connected with a pin PA9 of the MCU chip through a network connection label USART _ TXD, so that the communication transmission of the smoke alarm signal is realized; a pin 2 of the RS485 chip is connected with a pin 3 of the RS485 chip, the pin 3 of the RS485 chip is connected with one end of a resistor R11 and the pin 3 of the triode, a pin 4 of the RS485 chip is connected with one end of a resistor R14, and the other end of the resistor R14 is connected with a pin 1 of the triode, so that the control of the transmitting and receiving directions of the transmitted signals is realized; the 6 feet of the RS485 chip are connected with one end of a resistor R13 and one end of a resistor R12, the other end of the resistor R12 is connected with one end of a bidirectional voltage stabilizer D4, one end of the bidirectional voltage stabilizer D3 and the 3 feet of a wire board connector socket J2, the 7 feet of the RS485 chip are connected with one end of a resistor R10 and one end of a resistor R9, the other end of the resistor R9 is connected with one end of a bidirectional voltage stabilizer D2, the other end of the bidirectional voltage stabilizer D3 and the 1 foot of the wire board connector socket J2, the 8 feet of the RS485 chip, the other end of the resistor R11 and the other end of the resistor R13 are connected with +3.3V, and therefore interference of a circuit to communication signals is reduced.
With reference to fig. 5, the specific connection manner of the power management circuit is as follows: the power supply device comprises a power supply chip U2, a wire board connector J1, a wire board connector J1, a bidirectional TVS tube D1, a capacitor C1 and a capacitor C2, wherein the wire board connector J1 is connected with a ground end GND, the wire board connector U2 and the capacitor C2 are connected with a power supply end +3.3V, the wire board connector J1 is connected with a power supply end +5V, and the wire board connector U2, the wire board connector U1, the bidirectional TVS tube D1 and the wire board connector J1 are connected with a power supply end +5V, so that the conversion from +5V to +3.3V is realized.
The utility model is used for a smog detection alarm circuit process at induced terminal drive test perception decision-making terminal of urban traffic is: after the power management circuit is started, the power management circuit respectively supplies power to the MCU chip, the RS485 communication chip and the smoke sensing alarm chip, the ion type smoke sensor detects the environmental smoke concentration value and sends the environmental smoke concentration value to the smoke alarm, when the environmental smoke concentration value exceeds a normal value, the smoke alarm chip sends a smoke alarm signal to the MCU, and the MCU uploads alarm information to the monitoring center through the RS485 conversion circuit.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the embodiment, the working principle of the smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal is only used, and the protection system and the protection method of the smoke detection alarm circuit are not limited. Any modification, equivalent replacement, or improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (7)
1. A smoke detection alarm circuit of a road test perception decision terminal of an urban traffic guidance terminal is characterized in that: the smoke alarm device comprises an MCU chip, an RS485 communication chip, a smoke alarm chip, an ion type smoke sensor and a power management circuit, wherein the power management circuit provides power for the MCU chip, the RS485 communication chip and the smoke alarm chip; the MCU chip and the RS485 communication chip are in signal feedback connection with each other; the MCU chip is in signal connection with the smoke sensing alarm chip; the smoke sensing alarm chip is in signal connection with the ion type smoke sensor.
2. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal as claimed in claim 1, wherein: after the power management circuit is started, the power management circuit supplies power to the MCU chip, the RS485 communication chip and the smoke sensing alarm chip respectively, the ion type smoke sensor detects an environment smoke concentration value and sends the environment smoke concentration value to the smoke alarm chip, when the environment smoke concentration value exceeds a normal value, the smoke alarm chip sends a smoke alarm signal to the MCU chip, and the MCU chip uploads the alarm information to the monitoring center through the RS485 chip conversion circuit.
3. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal as claimed in claim 1, wherein:
the specific connection mode of the smoke alarm chip is as follows: a VSS pin of the smoke alarm chip, one end of a capacitor C3, one end of a resistor R6, a pin 3 of the ionic smoke sensor, one end of a test key S1 and one end of a capacitor C4 are connected with a ground end GND;
VDD of the smoke alarm chip, one end of a resistor R1, the positive terminal of an LED1, one end of a resistor R7, the other end of a capacitor C4 and 4 pins of a wire board connector J1 are connected with a power supply end + 9V;
the 2 feet of the smoke alarm chip are connected with the other end of the R4;
the 5 pins of the smoke alarm chip are connected with a resistor R5;
the cathode of an indicator light LED1 of the smoke alarm circuit is connected with the other end of the resistor R5;
the pin 7 of the smoke alarm chip is connected with a resistor R7;
the 16 feet of the smoke alarm chip are connected with the 4 feet of the 14-foot surrounding ion type smoke sensor;
the 15 feet of the smoke alarm chip are connected with the 4 feet of the ion type smoke sensor;
the 13 feet of the smoke alarm chip are connected with the other end of the resistor R6;
the 12 feet of the smoke alarm chip are connected with the other end of the capacitor C3.
4. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal as claimed in claim 1, wherein:
the 1 pin of the ion type smoke sensor is connected with the 2 pins of the ion type smoke sensor, and the other end of the resistor R1 is connected;
the 2 feet of the ion type smoke sensor are connected with one end of a resistor R2, and a resistor R2 is connected with the other end of a test key S1;
the 3 pins of the ionic smoke sensor are connected with a ground end GND;
4 feet of the ion type smoke sensor are connected with 14 feet of the smoke sensing alarm chip.
5. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal as claimed in claim 1, wherein:
the specific connection mode of the MCU chip is as follows: the PA9 pin of the MCU chip is connected with the 4 pins of the RS485 chip through a network with a label USART _ TXD, and the PA10 pin of the MCU chip is connected with the 1 pin of the RS485 chip through a network with a label USART _ RXD, so that the communication transmission between an alarm signal and a monitoring center is realized;
a PA15 pin of the MCU chip is connected with one end of a resistor R4 and one end of a resistor R3 through a network connection label SMK, so that the transmission of smoke alarm signals is realized;
the VSS pin of the MCU chip is connected with a ground end GND;
the VSSA pin of the MCU chip is connected with a ground end GND;
the VDD pin of the MCU chip is connected with a power supply end and is + 3.3V;
and the VDDA pin of the MCU chip is connected with a power supply end + 3.3V.
6. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal as claimed in claim 1, wherein:
a pin 1 of the RS485 chip is connected with a pin PA10 of the MCU chip through a network connection label USART _ RXD;
pins 2 of the RS485 chip are connected with pins 3 of the RS485 chip;
a pin 3 of the RS485 chip is connected with one end of a resistor R11 and a pin 3 of the triode;
a pin 4 of the RS485 chip is connected with a pin PA9 of the MCU chip through a network connection label USART _ TXD, the pin 4 of the RS485 chip is connected with one end of a resistor R14, and the other end of the resistor R14 is connected with a pin 1 of the triode;
the pin 6 of the RS485 chip is connected with one end of a resistor R13 and one end of a resistor R12, and the other end of the resistor R12 is connected with one end of a bidirectional voltage stabilizer D4, one end of the bidirectional voltage stabilizer D3 and a pin 3 of a wire board connector socket J2;
a pin 7 of the RS485 chip is connected with one end of a resistor R10 and one end of a resistor R9, and the other end of the resistor R9 is connected with one end of a bidirectional voltage stabilizer D2, the other end of the bidirectional voltage stabilizer D3 and a pin 1 of a wire board connector socket J2;
the 8 pins of the RS485 chip, the other end of the resistor R11 and the other end of the resistor R13 are connected with a power supply end + 3.3V;
and a pin 5 of the RS485 chip, a pin 2 of the triode Q1, the other end of the bidirectional voltage stabilizer D2, the other end of the bidirectional voltage stabilizer D4, the other end of the resistor R10 and a pin 2 of the wire board connector socket J2 are connected with a ground end GND.
7. The smoke detection alarm circuit of the urban traffic guidance terminal drive test perception decision terminal as claimed in claim 1, wherein: the power management circuit comprises a power chip U2;
a pin 1 of the power chip U2, a pin 2 of the wire board connector J1, a pin 3 of the wire board connector J1, one end of the bidirectional TVS tube D1, one end of the capacitor C1 and one end of the capacitor C2 are connected with a ground end GND;
the 2 pin of the power chip U2 and the other end of the capacitor C2 are connected with a power supply end + 3.3V;
and the pin 3 of the power chip U2, the other end of the capacitor C1, the other end of the bidirectional TVS tube D1 and the pin 1 of the wire board connector J1 are connected with a power supply end + 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922251188.8U CN211427474U (en) | 2019-12-16 | 2019-12-16 | Smoke detection alarm circuit of urban traffic guidance terminal drive test perception decision terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922251188.8U CN211427474U (en) | 2019-12-16 | 2019-12-16 | Smoke detection alarm circuit of urban traffic guidance terminal drive test perception decision terminal |
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| CN211427474U true CN211427474U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735077A (en) * | 2020-12-25 | 2021-04-30 | 钟美韶 | Simple smoke detector circuit for hospital |
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2019
- 2019-12-16 CN CN201922251188.8U patent/CN211427474U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112735077A (en) * | 2020-12-25 | 2021-04-30 | 钟美韶 | Simple smoke detector circuit for hospital |
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