CN110716490A - Multi-integrated sensor integrated board circuit - Google Patents

Multi-integrated sensor integrated board circuit Download PDF

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Publication number
CN110716490A
CN110716490A CN201911073883.8A CN201911073883A CN110716490A CN 110716490 A CN110716490 A CN 110716490A CN 201911073883 A CN201911073883 A CN 201911073883A CN 110716490 A CN110716490 A CN 110716490A
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China
Prior art keywords
detection
power supply
mcu
temperature
liquid level
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CN201911073883.8A
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Chinese (zh)
Inventor
高晓勇
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高晓勇
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Priority to CN201911073883.8A priority Critical patent/CN110716490A/en
Publication of CN110716490A publication Critical patent/CN110716490A/en
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/0083Converters characterised by their input or output configuration
    • H02M1/009Converters characterised by their input or output configuration having two or more independently controlled outputs

Abstract

The invention discloses a multi-integrated sensor integrated board circuit, which comprises an MCU (microprogrammed control unit) U3, a power supply part, a vibration detection part, a current detection part, a liquid level detection part, a light sensation detection part and a temperature and humidity detection part, wherein the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part are all connected with the MCU 3, the MCU 3 is used for receiving detection electric signals of the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part, and the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU 3 are all connected with the power supply part; the invention realizes multi-directional monitoring of the environment by arranging the plurality of detection parts, and meanwhile, the detection parts are integrated, thereby saving resources, being convenient for management and maintenance and having good market application value.

Description

Multi-integrated sensor integrated board circuit
Technical Field
The invention relates to the field of electronic circuits, in particular to a multi-set sensor integrated board circuit.
Background
The sensor (english name: transducer/sensor) is a detection device, which can sense the measured information and convert the sensed information into electric signals or other information in required form according to a certain rule to output, so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like.
The sensor features include: miniaturization, digitalization, intellectualization, multifunction, systematization and networking. The method is the first link for realizing automatic detection and automatic control. The existence and development of sensors that give objects the sense of touch, taste and smell and that gradually become alive have long penetrated extremely wide fields such as industrial production, space development, marine exploration, environmental protection, resource investigation, medical diagnostics, biotechnology, even cultural relic protection and the like. It can be said that from vast amounts of space, to vast amounts of ocean, to complex engineering systems, almost every modernization project, is not open to a wide variety of sensors. Therefore, the important role of the sensor technology in developing economy and promoting social progress is very obvious.
In the place that requires the higher to the environment, like fish ecological breeding, the product of breed requires the higher to the environmental sensitivity, consequently needs multiple environmental monitoring system, like the system of monitoring temperature and humidity, one set of system of monitoring liquid level, every set of monitoring system all need dispose alone, and system integration is not high, and every system needs power supply alone, extravagant more resource and be unfavorable for control and management.
The prior art has defects and needs to be improved.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a multi-set sensor integrated board circuit.
The invention provides a technical scheme, in particular to a multi-integrated sensor integrated board circuit which comprises an MCU (microprogrammed control unit) 3, a power supply part, a vibration detection part, a current detection part, a liquid level detection part, a light sensation detection part and a temperature and humidity detection part, the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part are all connected with the MCU U3, the MCU 3 is used for receiving the detection electric signals of the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part, the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU (microprogrammed control unit) U3 are all connected with the power supply part, the power supply part is used for supplying power to the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU U3;
the vibration detection part is used for detecting vibration and transmitting a vibration electric signal to the MCU U3;
the current detection part is used for detecting a current value and transmitting a current value signal to the MCU U3;
the liquid level detection part is used for detecting the liquid level and transmitting a liquid level electric signal to the MCU U3;
the light sensation detection part is used for detecting light sensation and transmitting a light sensation electric signal to the MCU U3;
the temperature and humidity detection part is used for detecting temperature and humidity and transmitting temperature and humidity electric signals to the MCU U3.
Preferably, the input end of the power supply part is set as commercial power, the output ends of the power supply part are set as two, and the two output ends are direct current and are respectively a 5V power supply and a 3.3V power supply.
Preferably, the shock detection part comprises a shock sensor J8 and a comparator U5, the shock sensor J8 is connected in series in a loop of a 3.3V power supply, a non-inverting input end of the comparator U5 is connected with a high potential end of the shock sensor J8, an output end of the comparator U5 is connected with an input end of the MCU micro control unit U3, and the 3.3V power supply supplies power to the comparator.
Preferably, the inverting input end of the comparator U5 is connected with the slider terminal of a potentiometer PH1, the potentiometer PH1 is connected in series in a loop of a 3.3V power supply, and the sensitivity of the comparator U5 is adjusted by adjusting the potentiometer PH 1.
Preferably, the current detection part comprises a current interface J7, a current sensing amplifier U8 and a detection resistor R18, the positive terminal of the current interface J7 is grounded through the detection resistor R18, two input terminals of the current sensing amplifier U8 are connected to two ends of the detection resistor R18, the output terminal of the current sensing amplifier U8 is connected to the input terminal of the MCU micro-control unit U3, and the 3.3V power supply provides power for the current sensing amplifier U8.
Preferably, the liquid level detection portion includes liquid level sensor interface J5 and comparator U6, the output of liquid level sensor interface J5 is connected the homophase input of comparator U6, the output of comparator U6 is connected the input of MCU micro control unit U3, the 3.3V power does comparator U6 provides the power, the 5.5V power does liquid level sensor interface J5 provides the power.
Preferably, the inverting input end of the comparator U6 is connected with the slider terminal of a potentiometer PH2, the potentiometer PH2 is connected in series in a loop of a 3.3V power supply, and the sensitivity of the comparator U6 is adjusted by adjusting the potentiometer PH 2.
Preferably, the light sensation detection part comprises a light detection sensor J4 and an amplifier U7, the light detection sensor J4 is connected in series in a loop of a 3.3V power supply, a low potential end of the light detection sensor J4 is connected to a non-inverting input end of the amplifier U7, an output end of the amplifier U7 is connected to an input end of the MCU micro-control unit U3, and the 3.3V power supply supplies power to the amplifier U7.
Preferably, a potentiometer PH3 is connected between the output end of the amplifier U7 and the inverting input end of the amplifier U7, and the inverting input end of the amplifier U7 is grounded through a resistor R20.
Preferably, the temperature and humidity detection part is provided with a temperature and humidity sensor interface J1, a power supply end of the temperature and humidity sensor interface J1 is connected with the 3.3V power supply, two output ends of the temperature and humidity sensor interface J1 are connected with an input end of the MCU micro control unit U3, and a ground end of the temperature and humidity sensor interface J1 is grounded.
Compared with the prior art, the power supply part is arranged to convert commercial power into a 5V power supply and a 3.3V power supply to supply power to each detection part, and the multiple detection parts are configured and utilized by the same power supply system in a gathering manner, so that resources are saved and management is facilitated; the vibration detection part is arranged to detect vibration factors of the environment; the current detection part is arranged to monitor the current at the current to be detected, so that overcurrent is prevented, and system damage is prevented; the liquid level detection part is arranged to monitor the liquid level, so that the liquid level is prevented from being too low or too high; the light sensation detection part is arranged to monitor the light sensation affecting the production; the temperature and humidity of the environment are monitored by arranging the temperature and humidity detection part, so that the management is facilitated; the invention realizes multi-directional monitoring of the environment by arranging the plurality of detection parts, and meanwhile, the detection parts are integrated, thereby saving resources, being convenient for management and maintenance and having good market application value.
Drawings
FIG. 1 is a schematic view of the entire connection in embodiment 1 of the present invention;
FIG. 2 is a first circuit diagram of a power supply according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a power supply circuit according to a second embodiment of the present invention;
FIG. 4 is a circuit diagram of a vibration detection unit according to an embodiment of the present invention;
FIG. 5 is a circuit diagram of a current detection unit according to an embodiment of the present invention;
FIG. 6 is a circuit diagram of a liquid level detection unit according to an embodiment of the present invention;
FIG. 7 is a circuit diagram of a light sensing unit according to an embodiment of the present invention;
FIG. 8 is a circuit diagram of a temperature and humidity detecting portion according to an embodiment of the present invention;
FIG. 9 is a circuit diagram of an MCU micro control unit U3 according to an embodiment of the present invention;
FIG. 10 is a circuit diagram of a 485 communication part according to an embodiment of the present invention;
FIG. 11 is a circuit diagram of a third debug interface J6 according to an embodiment of the present invention.
Detailed Description
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.
In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
As shown in FIG. 1, a multi-integrated sensor integrated board circuit comprises an MCU (microprogrammed control Unit) 3, a power supply unit, a vibration detection unit, a current detection unit, a liquid level detection unit, a light sensation detection unit and a temperature and humidity detection unit, the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part are all connected with the MCU U3, the MCU 3 is used for receiving the detection electric signals of the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part, the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU (microprogrammed control unit) U3 are all connected with the power supply part, the power supply part is used for supplying power to the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU U3;
the vibration detection part is used for detecting vibration and transmitting a vibration electric signal to the MCU U3;
the current detection part is used for detecting a current value and transmitting a current value signal to the MCU U3;
the liquid level detection part is used for detecting the liquid level and transmitting a liquid level electric signal to the MCU U3;
the light sensation detection part is used for detecting light sensation and transmitting a light sensation electric signal to the MCU U3;
the temperature and humidity detection part is used for detecting temperature and humidity and transmitting temperature and humidity electric signals to the MCU U3.
As shown in fig. 2 and 3, preferably, the input end of the power supply part is set as the commercial power, the output end of the power supply part is set as two, and both the two output ends are direct current power, namely, a 5V power supply and a 3.3V power supply.
As shown in fig. 4, preferably, the shock detection unit includes a shock sensor J8 and a comparator U5, the shock sensor J8 is connected in series in a loop of a 3.3V power supply, a non-inverting input terminal of the comparator U5 is connected to a high potential terminal of the shock sensor J8, an output terminal of the comparator U5 is connected to an input terminal of the MCU micro control unit U3, and the 3.3V power supply supplies power to the comparator.
Preferably, the inverting input end of the comparator U5 is connected with the slider terminal of a potentiometer PH1, the potentiometer PH1 is connected in series in a loop of a 3.3V power supply, and the sensitivity of the comparator U5 is adjusted by adjusting the potentiometer PH 1.
Further, the positive electrode of the vibration sensor current sensing amplifier U8 is connected with a 3.3V power supply through a resistor R12, the negative electrode of the vibration sensor current sensing amplifier U8 is grounded, the vibration sensor current sensing amplifier U8 is connected with a capacitor C33 in parallel, the output end of the comparator U5 is connected with the 3.3V power supply through a resistor R28, and the output end of the comparator U5 is grounded through a capacitor C15;
as shown in fig. 5, preferably, the current detection unit includes a current interface J7, a current sense amplifier U8 and a detection resistor R18, the positive terminal of the current interface J7 is grounded through the detection resistor R18, two input terminals of the current sense amplifier U8 are connected to two terminals of the detection resistor R18, an output terminal of the current sense amplifier U8 is connected to an input terminal of the MCU micro-control unit U3, and the 3.3V power supply provides power to the current sense amplifier U8.
Furthermore, two ends of the current interface J7 are connected through a capacitor C27, a pin 1 of the current sense amplifier U8 is connected to a 3.3V power supply, a pin 2 of the current sense amplifier U8 is connected to ground through a capacitor C24, a pin 1 of the current sense amplifier U8 is connected to ground, a pin 4 of the current sense amplifier U8 is connected to a high-potential end of a resistance detection resistor R18, a pin 5 of the current sense amplifier U8 is connected to a low-potential end of a resistance detection resistor R18, and a pin 6 of the current sense amplifier U8 is connected to an input end of the MCU micro-control unit U3.
As shown in fig. 6, preferably, the liquid level detection portion includes a liquid level sensor interface J5 and a comparator U6, an output end of the liquid level sensor interface J5 is connected to a non-inverting input end of the comparator U6, an output end of the comparator U6 is connected to an input end of the MCU micro control unit U3, the 3.3V power supply provides power for the comparator U6, and the 5.5V power supply provides power for the liquid level sensor interface J5.
Preferably, the inverting input end of the comparator U6 is connected with the slider terminal of a potentiometer PH2, the potentiometer PH2 is connected in series in a loop of a 3.3V power supply, and the sensitivity of the comparator U6 is adjusted by adjusting the potentiometer PH 2.
Further, 3 and 4 pins of level sensor interface J5 connect the back jointly 5.5V power, 2 pins of level sensor interface J5 are connected the homophase input of comparator U6, 1 pin of level sensor interface J5 is through parallelly connected resistance R21 and R22 ground connection, the homophase input of comparator U6 sets up electric capacity C34 ground connection, filters, and 3.3V power connects the homophase input of comparator U6 through resistance R29, and 3.3V power connects the output of comparator U6 through resistance R27, and the output of comparator U6 passes through electric capacity C17 ground connection, filters.
As shown in fig. 7, preferably, the light sensing unit includes a photo sensor J4 and an amplifier U7, the photo sensor J4 is connected in series in a loop of a 3.3V power supply, a low potential end of the photo sensor J4 is connected to a non-inverting input end of an amplifier U7, an output end of the amplifier U7 is connected to an input end of the MCU micro-control unit U3, and the 3.3V power supply supplies power to the amplifier U7.
Preferably, a potentiometer PH3 is connected between the output end of the amplifier U7 and the inverting input end of the amplifier U7, and the inverting input end of the amplifier U7 is grounded through a resistor R20.
Further, the high potential end of the photo detector J4 is connected with a 3.3V power supply, the low potential end of the photo detector J4 is connected with the ground through a resistor R19, the power supply end of the amplifier U7 is connected with the 3.3V power supply, and the grounding end of the amplifier U7 is connected with the ground.
As shown in fig. 8, preferably, the temperature and humidity detecting portion is provided with a temperature and humidity sensor interface J1, a power supply terminal of the temperature and humidity sensor interface J1 is connected to the 3.3V power supply, two output terminals of the temperature and humidity sensor interface J1 are connected to an input terminal of the MCU micro-control unit U3, and a ground terminal of the temperature and humidity sensor interface J1 is grounded.
Further, two output ends of the temperature and humidity sensor interface J1 are respectively connected with an input end of the MCU micro control unit U3 through resistors R6 and R25, and the 3.3V power supply is connected with two output ends of the temperature and humidity sensor interface J1 through resistors R6 and R26.
As shown in fig. 2 and 3, further, the power supply unit includes a mains supply interface JP1, a protection unit, a rectification unit, a filtering unit, a primary voltage reduction unit, an indication unit, a linear voltage stabilization unit and a secondary voltage reduction unit, which are connected in sequence, the mains supply interface JP1 is connected with a mains supply, and the output end of the secondary voltage reduction unit supplies power for the vibration detection unit, the current detection unit, the liquid level detection unit, the light sensation detection unit, the temperature and humidity detection unit and the MCU micro control unit U3.
Furthermore, the protection unit comprises a fuse F1, a thermistor RT1, a discharge tube ZD1, a common mode inductor LF1 and a TVS tube TV1, two ends of an input side of the common mode inductor LF1 are respectively connected to pins 1 and 2 of a mains interface JP1, the fuse LF1 is arranged between the pin 1 of the mains interface JP1 and the common mode inductor LF1, two ends of the input side of the common mode inductor LF1 are connected through the thermistor RT1, the pin 2 of the mains interface JP1 is grounded through the discharge tube, the pin 3 of the mains interface JP1 is grounded, the TVS tube TV1 is connected to two ends of an output side of the common mode inductor LF1, and two ends of an output side of the common mode inductor 1 are grounded through a capacitor C1 and a capacitor C2; the protection unit provides protection for a power supply through a fuse F1, a thermistor RT1, a discharge tube ZD1 and a TVS tube TV 1.
Further, the rectifying unit is provided as a rectifying diode D1, the rectifying diode D1 is connected to the high-potential end of the output side of the common-mode inductor LF1, the negative electrode of the rectifying diode D1 is connected to the ground through three parallel capacitors C3-C5, the three parallel capacitors C3-C5 are filtering units, and the rectified direct current is filtered.
Further, the primary voltage reduction unit is provided with a voltage reduction chip U1, an input end of the voltage reduction chip U1 is connected with a cathode of the rectifier diode D1, an input end of the voltage reduction chip U1 is grounded through series resistors R1 and R2, an enable end of the voltage reduction chip U1 is connected with a middle end of resistors R1 and R2, an enable end of the voltage reduction chip U1 is grounded through a capacitor C6, a ground end of the voltage reduction chip U1 is grounded, a bootstrap end of the voltage reduction chip U1 is connected with an output end of the voltage reduction chip U1 through a capacitor C7, an output end of the voltage reduction chip U1 is grounded through a reverse-connection freewheeling diode D2, an output end of the voltage reduction chip U1 is connected with one end of an inductor L1, the other end is grounded through a capacitor C9, an output end of the voltage reduction chip U1, a freewheeling diode D2, an inductor L1 and a capacitor C9 form a BUCK type voltage reduction circuit, and perform voltage, the other end of inductance L1 still sets up electric capacity C10 ground connection, and the direct current of output carries out filtering operation, and the other end of inductance pass through resistance R4 connect in step-down chip U1's feedback end, resistance R4 shunt capacitance C8, step-down chip U1's feedback end passes through resistance R3 ground connection, step-down chip U1's feedback end is through the voltage of monitoring output, adjusts the switching frequency of step-down chip U1 output, makes the voltage of output maintain stably.
The indicating unit comprises a light emitting diode LED1 of a resistor R5, one end of the resistor R5 is connected with the other end of the inductor L1, the other end of the resistor R5 is connected with the anode of the light emitting diode LED1, and the cathode of the light emitting diode LED1 is grounded.
The other end of the inductor L1 is connected with the input end of the linear voltage stabilization unit through a magnetic bead FB1, and the magnetic bead FB1 is used for suppressing high-frequency noise and spike interference of a power line and absorbing electrostatic pulses at the same time; the linear voltage stabilization unit is provided with a linear voltage stabilization chip U2, the output end of a magnetic bead FB1 is connected with the input end of a linear voltage stabilization chip U2, the enable end of the linear voltage stabilization chip U2 is connected with the input end of the linear voltage stabilization chip U2, the ground end of the linear voltage stabilization chip U2 is grounded, the output end of the linear voltage stabilization chip U2 is grounded and filtered through parallel capacitors C11 and C12, the output end of the linear voltage stabilization chip U2 is a 5V power supply, and the feedback end of the linear voltage stabilization chip U2 is idle.
The secondary voltage reduction unit is provided with a voltage reduction chip U9, the output end of the linear voltage stabilization chip U2 is connected with the output end of the voltage reduction chip U9, the enabling end of the voltage reduction chip U9 is connected with the input end of the voltage reduction chip U9, the grounding end of the voltage reduction chip U9 is grounded, the output end of the voltage reduction chip U9 is a 3.3V power supply, the feedback end of the voltage reduction chip U9 is vacant, and the 3.3V power supply is grounded through a parallel capacitor C29-C31.
As shown in fig. 9, the model of the MCU micro-control unit U3 is set as STM32F070F6P6, the 1 pin of the MCU micro control unit U3 is grounded, a crystal oscillator is connected between the 2 pin and the 3 pin of the MCU micro control unit U3, pins 2 and 3 of the MCU micro control unit U3 are grounded through capacitors C18 and C19 respectively to form a clock circuit, pin 4 of the MCU micro control unit U3 is connected with a 3.3V power supply through a resistor R8 to form a reset circuit, pin 5 of the MCU micro control unit U3 is connected with a 3.3V power supply, and 5 pins of the MCU micro control unit U3 are grounded through a capacitor C25, 6 pins and 7 pins of the MCU micro control unit U3 are respectively connected with the output end of the current sensing amplifier U8 and the output end of the amplifier U7, 11 pins of the MCU micro control unit U3 are connected with the output end of the comparator U5, 12 pins and 13 pins of the MCU micro control unit U3 are respectively connected with two output ends of the temperature and humidity sensor interface J1, and 14 pins of the MCU micro control unit U3 are connected with the output end of the comparator U6.
According to the working principle of the invention, a power supply part protects 220V mains supply, and the power supply part converts the mains supply into a 5V power supply through rectification operation, filtering operation, buck type voltage reduction operation and linear voltage stabilization operation, and converts the power supply into a 3.3V power supply after secondary voltage reduction for supplying power to the whole system.
The working mode of the vibration detection part is that the vibration sensor J8 is conducted in a normal state, the non-inverting input end of the comparator U5 is at a low level, the output end of the comparator U5 is at a low level, and the MCU micro control unit U3 does not vibrate after receiving the low level; when a shock occurs, the shock sensor current sensing amplifier U8 is switched off, the voltage at the non-inverting input end of the comparator U5 is pulled high and exceeds the voltage at the inverting input end of the comparator U5, the comparator U5 outputs a high level, and the MCU micro control unit U3 receives the high level, namely the shock occurs.
The working mode of the current detection part is that current to be detected is connected to a current interface J7, namely, a resistor detection resistor R18 is connected in series to a load loop, a current sensing amplifier U8 collects voltage of the resistor detection resistor R18 and inputs the voltage to an MCU (microprogrammed control unit) U3 through fixed amplification factor, the MCU reduces the collected voltage by fixed factor, and except the resistance value of the resistor detection resistor R18, the current value is obtained.
The liquid level detection part works in a mode that a liquid level sensor is connected to a liquid level sensor interface J5, when the liquid level is higher than an alarm limit value, the liquid level sensor interface J5 outputs a low level which is lower than the voltage of an inverting input end of a comparator U6, the comparator U6 outputs a low level, and an MCU (microprogrammed control unit) U3 receives the low level, namely, the liquid level is higher than the alarm limit value; when the liquid level is lower than the alarm threshold value, the liquid level sensor interface J5 outputs a high level which is higher than the voltage of the inverting input terminal of the comparator U6, the comparator U6 outputs a high level, and the MCU micro control unit U3 receives the high level, namely, the liquid level is lower than the alarm threshold value.
The light sensation detection part works in a mode that the light detection sensor J4 changes the current value of a loop according to the light intensity of the environment, the amplifier U7 monitors and amplifies the voltage value at two ends of the resistor R19, and the MCU U3 collects and operates the voltage value.
Temperature and humidity measurement portion's operating mode, temperature and humidity sensor interface J1 connect temperature and humidity sensor, temperature and humidity sensor and change temperature and humidity into the magnitude of voltage input MCU microcontrol unit U3, and MCU microcontrol unit U3 gathers.
As shown in fig. 10, the second embodiment is different from the first embodiment in that the MCU micro-control unit is further provided with a 485 communication part, the 485 communication part is connected to the MCU micro-control unit U3, the 485 communication part is powered by a 3.3 power supply, and the 485 communication part is used for the MCU micro-control unit U3 to communicate with a remote terminal connected to the 485 communication part; the remote terminal is set as a controller or an environmental sensor, and the expansion of environmental monitoring categories can be realized through the 485 communication part, for example, the remote terminal is set with a PM2.5 sensor.
Furthermore, the 485 communication part is provided with a 485 chip U4, the model of the 485 chip U4 is SP3485, the 1 pin of the 485 chip U4 is connected with the 9 pin of the MCU micro control unit U3 through a resistor R9, the 9 pin of the MCU micro control unit U3 is grounded through a capacitor C22 for filtering, the 2 and 3 pins of the 485 chip U4 are connected together, the 3 pin of the 485 chip U4 is connected with the 10 pin of the MCU micro control unit U3 through a resistor R10, the 4 pin of the 485 chip U4 is connected with the 8 pin of the MCU micro control unit U3 through a resistor R10, the 4 pin of the 485 chip U4 is grounded through a capacitor C23 for filtering, the 8 pin of the 485 chip U23 is connected with a 3.3V battery, the 7 pin of the 485 chip U23 is connected with the 1 pin of the interface J23 through a resistor R23, the 6 pin of the 485 chip U23 is connected with the 2 pin of the interface J23 through an electrical cathode R23, the power supply of the 485 chip U23 is connected with the ground through the resistor R23, and the 485 chip U23 is connected with the ground through the chip 23, pins 6 and 7 of the 485 chip U4 are connected through a resistor R14, and pins 6 and 7 of the 485 chip U4 are grounded through TVS tubes TV3 and TV4, respectively.
As shown in fig. 11, the third embodiment is different from the above embodiments in that the MCU microcontrol unit U3 further includes a debug interface J6, the debug interface J6 is used for program debugging during program burning, 4 pins of the debug interface J6 are connected to 19 pins of the MCU microcontrol unit U3, 3 pins of the debug interface J6 are grounded, 2 pins of the debug interface J6 are connected to 20 pins of the MCU microcontrol unit U3, 1 pin of the debug interface J6 is connected to a 3.3V power supply, and 4 pins and 2 pins of the debug interface J6 are grounded through a TVS tube TVS 2.
As shown in fig. 9, the fourth embodiment is different from the previous embodiments in that the MCU micro-control unit U3 is further provided with a serial port J2 to implement serial port communication, a pin 1 of the serial port J2 is connected to a pin 18 of the MCU micro-control unit U3 through a resistor R24, a pin J2 of the serial port is connected to a pin 17 of the MCU micro-control unit U3 through a resistor R23, a pin 3 of the serial port is grounded, and pins 1 and 2 of the serial port J2 are grounded through a TVS tube TV 5.
The technical features mentioned above are combined with each other to form various embodiments which are not listed above, and all of them are regarded as the scope of the present invention described in the specification; also, modifications and variations may be suggested to those skilled in the art in light of the above teachings, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A multi-integrated sensor integrated board circuit is characterized by comprising an MCU (microprogrammed control Unit) 3, a power supply part, a vibration detection part, a current detection part, a liquid level detection part, a light sensation detection part and a temperature and humidity detection part, the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part are all connected with the MCU U3, the MCU 3 is used for receiving the detection electric signals of the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part and the temperature and humidity detection part, the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU (microprogrammed control unit) U3 are all connected with the power supply part, the power supply part is used for supplying power to the vibration detection part, the current detection part, the liquid level detection part, the light sensation detection part, the temperature and humidity detection part and the MCU U3;
the vibration detection part is used for detecting vibration and transmitting a vibration electric signal to the MCU U3;
the current detection part is used for detecting a current value and transmitting a current value signal to the MCU U3;
the liquid level detection part is used for detecting the liquid level and transmitting a liquid level electric signal to the MCU U3;
the light sensation detection part is used for detecting light sensation and transmitting a light sensation electric signal to the MCU U3;
the temperature and humidity detection part is used for detecting temperature and humidity and transmitting temperature and humidity electric signals to the MCU U3.
2. The multiple integrated sensor integrated board circuit according to claim 1, wherein the input terminal of the power supply unit is provided with a commercial power, the output terminals of the power supply unit are provided with two output terminals, and the two output terminals are both direct current power supplies, namely a 5V power supply and a 3.3V power supply.
3. The multi-integrated sensor integrated board circuit according to claim 2, wherein the shock detector comprises a shock sensor J8 and a comparator U5, the shock sensor J8 is connected in series in a loop of a 3.3V power supply, a non-inverting input terminal of the comparator U5 is connected to a high potential terminal of the shock sensor J8, an output terminal of the comparator U5 is connected to an input terminal of the MCU micro control unit U3, and the 3.3V power supply supplies power to the comparator.
4. The integrated circuit of claim 3, wherein the inverting input terminal of the comparator U5 is connected to the slider terminal of a potentiometer PH1, the potentiometer PH1 is connected in series to the 3.3V power supply loop, and the sensitivity of the comparator U5 is adjusted by adjusting the potentiometer PH 1.
5. The multi-integrated sensor integrated board circuit according to claim 2, wherein the current detection portion comprises a current interface J7, a current sensing amplifier U8 and a detection resistor R18, the positive terminal of the current interface J7 is grounded through the detection resistor R18, two input terminals of the current sensing amplifier U8 are connected to two terminals of the detection resistor R18, the output terminal of the current sensing amplifier U8 is connected to the input terminal of the MCU micro-control unit U3, and the 3.3V power supply supplies power to the current sensing amplifier U8.
6. The multi-integrated sensor integrated board circuit according to claim 2, wherein the liquid level detection portion comprises a liquid level sensor interface J5 and a comparator U6, an output end of the liquid level sensor interface J5 is connected with a non-inverting input end of the comparator U6, an output end of the comparator U6 is connected with an input end of the MCU micro control unit U3, the 3.3V power supply supplies power to the comparator U6, and the 5.5V power supply supplies power to the liquid level sensor interface J5.
7. The integrated circuit of claim 6, wherein the inverting input terminal of the comparator U6 is connected to the slider terminal of a potentiometer PH2, the potentiometer PH2 is connected in series to the 3.3V power supply loop, and the sensitivity of the comparator U6 is adjusted by adjusting the potentiometer PH 2.
8. The multi-integrated sensor integrated board circuit as claimed in claim 2, wherein the light sensing part comprises a photo sensor J4 and an amplifier U7, the photo sensor J4 is connected in series in a loop of a 3.3V power supply, a low potential terminal of the photo sensor J4 is connected to a non-inverting input terminal of the amplifier U7, an output terminal of the amplifier U7 is connected to an input terminal of the MCU micro control unit U3, and the 3.3V power supply supplies power to the amplifier U7.
9. The integrated circuit of claim 8, wherein a potentiometer PH3 is connected between the output terminal of the amplifier U7 and the inverting input terminal of the amplifier U7, and the inverting input terminal of the amplifier U7 is connected to ground through a resistor R20.
10. The multi-integrated sensor integrated board circuit according to claim 2, wherein the temperature and humidity detecting portion is provided with a temperature and humidity sensor interface J1, a power supply terminal of the temperature and humidity sensor interface J1 is connected to the 3.3V power supply, two output terminals of the temperature and humidity sensor interface J1 are connected to an input terminal of the MCU micro-control unit U3, and a ground terminal of the temperature and humidity sensor interface J1 is grounded.
CN201911073883.8A 2019-11-06 2019-11-06 Multi-integrated sensor integrated board circuit Pending CN110716490A (en)

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