CN216815577U

CN216815577U - Network equipment environmental data's acquisition circuit

Info

Publication number: CN216815577U
Application number: CN202123183745.0U
Authority: CN
Inventors: 张俊富; 张新民
Original assignee: Shandong Hanl Information Technology Co ltd
Current assignee: Shandong Hanl Information Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-24
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to a circuit for collecting environmental data of network equipment, which comprises: the system comprises a temperature sensor M1, a humidity sensor M2, a temperature conditioning circuit, a humidity conditioning circuit, a low-pass filter circuit, an A/D conversion circuit, a single chip microcomputer U1 and a wireless communication module, wherein the temperature sensor M1 and the humidity sensor M2 respectively acquire a humidity signal and a temperature signal of the network equipment, and the temperature sensor M1 and the humidity sensor M2 are respectively connected with the low-pass filter circuit and the A/D conversion circuit through the temperature conditioning circuit and the humidity conditioning circuit and the single chip microcomputer U1.

Description

Network equipment environmental data's acquisition circuit

Technical Field

The utility model belongs to the technical field of acquisition circuits, and particularly relates to an acquisition circuit for network equipment environmental data.

Background

The control data center is the infrastructure of the power grid data center and is the core brain for guaranteeing the safe and stable operation of the power grid, the power grid dispatching automation machine room is an important component of the whole power grid dispatching automation system, a large number of network devices such as servers, switches, routers, GPS clocks and the like are arranged in the machine room, various real-time parameters of the machine room, such as whether the temperature and the voltage of the equipment are stable or not and whether the air humidity exceeds the standard or not, can be seen only when the network manager is on the site of the equipment and is connected with the computer, the normal operation of a service system is influenced, and the system paralysis can be seriously caused.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes the defects of the prior art, and solves the technical problems that: the acquisition circuit of the network equipment environmental data can acquire the temperature and the humidity of the network equipment environmental data and improve acquisition precision.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a network device environmental data acquisition circuit, comprising: temperature sensor M1, humidity transducer M2, temperature conditioning circuit, humidity conditioning circuit, low pass filter circuit, AD converting circuit, singlechip U1 and wireless communication module, temperature sensor M1, humidity transducer M2 gather network equipment's humidity signal and temperature signal respectively, temperature sensor M1, humidity transducer M2 link to each other through temperature conditioning circuit, humidity conditioning circuit and low pass filter circuit's input respectively, low pass filter circuit's output passes through AD converting circuit and links to each other with singlechip U1's input, singlechip U1's output passes through wireless communication module and links to each other with control center.

Preferably, the temperature conditioning circuit comprises an amplifier P1, an amplifier P2, a transistor Q1, a transistor Q2, a sliding rheostat RP1 and a sliding rheostat RP2, wherein a third connection terminal of the temperature sensor M1 is connected with one end of a resistor R1, the other end of the resistor R1 is respectively connected with a second connection terminal of the temperature sensor M1, one end of the resistor R2, an inverting input terminal of the amplifier P2, a collector of the transistor Q2 and one end of a capacitor C2, a first connection terminal of the temperature sensor M1, the other end of the resistor R2 and a non-inverting input terminal of the amplifier P2 are respectively connected with ground, an output terminal of the amplifier P2 is respectively connected with the other end of the capacitor C2, one end of the resistor R3 and a connection terminal, the other end of the resistor R3 is respectively connected with a sliding terminal of the sliding rheostat RP2, one end of the sliding rheostat RP2, a base of the transistor Q1, and the other end of the sliding rheostat RP2 is connected with ground, the a wiring terminal is connected with a C wiring terminal in the low-pass filter circuit, an emitting electrode of the triode Q1 is connected with an emitting electrode of the triode Q2, a connecting line between an emitting electrode of the triode Q1 and an emitting electrode of the triode Q2 is connected with a resistor R6 in series and then connected with an output end of the amplifier P1, an output end of the amplifier P1 is connected with a collector electrode of the triode Q1 in series after being connected with a capacitor C1 in series, an inverting input end of the amplifier P1 is connected with a power supply end of +12V after being connected with a resistor R4 in series, and a non-inverting input end of the amplifier P1 is connected with a resistor R5 in series and then grounded.

Preferably, the humidity conditioning circuit comprises an amplifier P3, an amplifier P4 and a slide rheostat RP3, one end of the humidity sensor RS1 is connected with a +5V power supply terminal, the other end of the humidity sensor RS1 is connected with a resistor R11 in series and then grounded, a connection line between the humidity sensor RS1 and the resistor R11 is connected with a non-inverting input terminal of the amplifier P3, an inverting input terminal of the amplifier P3 is connected with one end of the resistor R8 and one end of the resistor R9 respectively, the other end of the resistor R8 is grounded, the other end of the resistor R9 is connected with an output terminal of the amplifier P3 and one end of the resistor R12 respectively, the other end of the resistor R12 is connected with a non-inverting input terminal of the amplifier P4, the inverting input terminal of the amplifier P4 is connected with a slide rheostat RP3 in series, one end of the slide rheostat RP3 is connected with a resistor R10 in series and then grounded, the other end of the slide rheostat RP3 is connected with a +5V terminal, and an output terminal of the amplifier P4 is connected with a b terminal, and the b wiring terminal is connected with a c wiring terminal in the low-pass filter circuit.

Preferably, the low-pass filter circuit includes: an amplifier P5, an amplifier P6, a triode Q3, a triode Q4 and a sliding rheostat RP4, wherein a non-inverting input terminal of the amplifier P5 is sequentially connected in series with a resistor R13 and a capacitor C13 and then grounded, a connecting line between the resistor R13 and the capacitor C13 is connected with a C connecting terminal, a non-inverting input terminal of the amplifier P13 is sequentially connected in series with the resistor R13 and then respectively connected with a non-inverting input terminal of the amplifier P13 and one end of the capacitor C13, a connecting line between the resistor R13 and the resistor R13 is connected with an output terminal of the amplifier P13, the other end of the capacitor C13 is respectively connected with an output terminal of the amplifier P13, one end of the resistor R13 and one end of the resistor R13, the other end of the resistor R13 is connected with a non-inverting input terminal of the amplifier P13, the other end of the resistor R13 is connected with one end of the amplifier P13, one end of the other end of the resistor R13 and a collector electrode of the triode Q13, the other end of the capacitor C13 is respectively connected with a positive electrode of the zener diode D13 and one end of the resistor RP 13, and one end of the sliding rheostat are respectively connected with the ground, the cathode of a voltage stabilizing diode D3 is respectively connected with one end of a resistor R18 and the base of a triode Q4, the emitter of the triode Q4 is connected with the sliding end of a sliding rheostat RP4, the other end of the sliding rheostat RP4 is connected with an inductor L1 in series and then is connected with an e wiring terminal of an A/D conversion circuit through a D wiring terminal, the connecting line between the other end of the sliding rheostat RP4 and the inductor L1 is connected with a capacitor C6 in series and then is grounded, the connecting line between the inductor L1 and the D wiring terminal is connected with a capacitor C7 in series and then is grounded, the non-inverting input end of an amplifier P6 is respectively connected with the emitter of the triode Q3 and one end of a capacitor C8, the other end of the capacitor C8 is connected with the anode of the voltage stabilizing diode D2 and then is grounded, the cathode of the voltage stabilizing diode D2 is sequentially connected with a resistor R19 and a resistor R20 in series and then is connected with the power supply end of +5V, the connecting line between the cathode of the voltage stabilizing diode D2 and the resistor R19 is connected with the base of the triode Q3, the connection between the resistor R19 and the resistor R20 is connected to the collector of the transistor Q3,

preferably, the a/D conversion circuit comprises an a/D conversion chip U2, a WR end of the a/D conversion chip U2 is connected with a P3.4 end of the single-chip microcomputer U1, an RD end of the a/D conversion chip U2 is connected with a P3.3 end of the single-chip microcomputer U1, a CS end of the a/D conversion chip U2 is connected with a P3.2 end of the single-chip microcomputer U1, a CLKIN end of the a/D conversion chip U2 is connected IN series with a capacitor C9 and is connected with an IN-end of the a/D conversion chip U2, an AGND end of the a/D conversion chip U2, and an nd end of the a/D conversion chip U2 respectively and then grounded, a connecting line between the DGND end of the a/D conversion chip U2 and a power supply terminal R24 and a resistor 573r 23V after being connected IN turn, a connecting line between the resistors R24 and REF 23 and a grounding end of the a/D conversion chip U2, a/D conversion chip 2 is connected with an outt + terminal of the OUTPUT amplifier after being connected with the U82 4, the DB7 end of the A/D conversion chip U2 is connected with the P1.7 end of the single chip microcomputer U1, the DB6 end of the A/D conversion chip U2 is connected with the P1.6 end of the single chip microcomputer U1, the DB5 end of the A/D conversion chip U2 is connected with the P1.5 end of the single chip microcomputer U1, the DB4 end of the A/D conversion chip U2 is connected with the P1.4 end of the single chip microcomputer U1, the DB3 end of the A/D conversion chip U2 is connected with the P1.3 end of the single chip microcomputer U1, the DB2 end of the A/D conversion chip U2 is connected with the P1.2 end of the single chip microcomputer U1, the DB1 end of the A/D conversion chip U2 is connected with the P1.1 end of the single chip microcomputer U1, the DB0 end of the A/D conversion chip U2 is connected with the P1.0 end of the single chip microcomputer U1, and the R2 end of the single chip microcomputer U465 is connected with the P3.3 end of the P3.5 end of the single chip microcomputer U1.

Preferably, the model of the single chip microcomputer U1 is AT89C 51; the models of the amplifier P1 and the amplifier P2 are OPA 2336; the model of the temperature sensor M1 is DS18B 20.

Preferably, the amplifiers P3 and P4 are both OPA 2336.

Preferably, the models of the amplifier P5 and the amplifier P6 are both TLV2252 AID.

Preferably, the model of the A/D conversion chip U2 is ADC 0804.

Preferably, the model of the wireless communication module is NRF401 radio frequency transceiver chip.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model collects the temperature and humidity of the environment where the network equipment is located through a temperature sensor M1 and a humidity sensor M2, the temperature sensor M1 and the humidity sensor M2 transmit collected temperature and humidity signals to a low-pass filter circuit through a temperature conditioning circuit and a humidity conditioning circuit respectively, analog signals are converted into digital signals through an A/D conversion circuit and then transmitted to a singlechip U1 for processing, if the collected temperature value and humidity value are larger than preset alarm threshold values, then send the warning suggestion through alarm circuit, remind the staff to handle in time, simultaneously, send the humiture value of gathering to control center through wireless communication module, control center manages data set, and the staff of being convenient for monitors network equipment's humiture value at the background in real time, has improved the security of network equipment work, avoids the unnecessary occurence of failure.

2. The output signal of an amplifier P6 in the low-pass filter circuit is filtered by an RC formed by a resistor R17 and a capacitor C5 and then is sent to a triode voltage stabilizer consisting of a triode Q4, a resistor R18 and a voltage stabilizing diode D3 for stabilization, the stability of the output potential of the temperature and humidity signal can be well improved by utilizing the principle of the triode voltage stabilizer, the signal output potential range is matched with the receiving range of an A/D conversion circuit after being output and adjusted by a slide rheostat RP4, the normal collection of temperature and humidity data is ensured, a pi-type LC filter is formed at the circuit processing output end of an inductor L1, the capacitor C7 and the capacitor C7, external noise and high-frequency clutter interference generated by self excitation in the circuit are effectively prevented, ripple noise is effectively inhibited, and the temperature and humidity signal is more accurate.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic circuit diagram of a temperature conditioning circuit according to the present invention;

FIG. 3 is a schematic circuit diagram of a humidity conditioning circuit of the present invention;

FIG. 4 is a circuit schematic of the low pass filter circuit of the present invention;

FIG. 5 is a schematic circuit diagram of an A/D conversion circuit and a single chip microcomputer U1 in the utility model;

in the figure: the temperature conditioning circuit is 1, the humidity conditioning circuit is 2, the low-pass filter circuit is 3, the A/D conversion circuit is 4, and the wireless communication module is 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 5, an acquisition circuit for network device environment data includes: temperature sensor M1, humidity transducer M2, temperature conditioning circuit 1, humidity conditioning circuit 2, low pass filter circuit 3, AD converting circuit 4, singlechip U1 and wireless communication module 5, temperature sensor M1, humidity transducer M2 link to each other with low pass filter circuit 3's input through temperature conditioning circuit 1, humidity conditioning circuit 2 respectively, low pass filter circuit 3's output passes through AD converting circuit 4 and links to each other with singlechip U1's input, singlechip U1's output passes through wireless communication module 5 and links to each other with control center, wireless communication module 5 chooses the model for use and is NRF401 radio frequency transceiver chip, singlechip U1's model is AT89C 51.

The output end of the single chip microcomputer U1 is also connected with an alarm circuit, the alarm circuit comprises a buzzer F1 and an indicator light D1, the P3.1 end of the single chip microcomputer U1 is connected with a resistor R26 in series and then connected with the base of a triode Q5, the collector of the triode Q5 is connected with the anode of a light-emitting diode D3, the cathode of the light-emitting diode D3 is connected with a resistor R27 in series and then grounded, the collector of the triode Q5 is connected with a buzzer F1 in series and then grounded, and the buzzer F1 and the indicator light D3 are both arranged in a room where the network equipment is located.

The utility model collects the temperature and humidity of the environment where the network equipment is located through a temperature sensor M1 and a humidity sensor M2, the temperature sensor M1 and the humidity sensor M2 transmit the collected temperature and humidity signals to a low-pass filter circuit 3 through a temperature conditioning circuit 1 and a humidity conditioning circuit 2 respectively, analog signals are converted into digital signals through an A/D conversion circuit 4 and then transmitted to a singlechip U1 for processing, if the collected temperature value and humidity value are larger than preset alarm threshold values, then send the warning suggestion through alarm circuit, remind the staff to handle in time, simultaneously, send the humiture value of gathering to control center through wireless communication module 5, control center manages data set, and the staff of being convenient for monitors network device's humiture value at the background in real time, has improved the security of network device work, avoids the unnecessary occurence of failure.

Further, as shown in fig. 2, the temperature conditioning circuit 1 includes an amplifier P1, an amplifier P2, a transistor Q1, a transistor Q2, a slide rheostat RP1, and a slide rheostat RP2, wherein the amplifier P1 and the amplifier P2 are both of OPA2336 type; the model of the temperature sensor M1 is DS18B 20; a third connection terminal of the temperature sensor M1 is connected to one end of a resistor R1, the other end of the resistor R1 is connected to the second connection terminal of the temperature sensor M1, one end of a resistor R2, an inverting input terminal of the amplifier P2, a collector of the triode Q2, and one end of a capacitor C2, a first connection terminal of the temperature sensor M1, the other end of the resistor R2, and a non-inverting input terminal of the amplifier P2 are grounded, an output terminal of the amplifier P2 is connected to the other end of the capacitor C2, one end of the resistor R3, and an a connection terminal, the other end of the resistor R3 is connected to a sliding terminal of a sliding rheostat RP2, one end of the sliding rheostat RP2, and a base of the triode Q1, the other end of the sliding rheostat 2 is grounded, the a connection terminal is connected to a connection terminal C connection terminal of the low-pass filter circuit 3, an emitter of the triode Q1 is connected to an emitter of the triode Q4649742, a connection terminal is connected to an emitter of the triode Q6, a connection terminal of the triode Q5478 and a connection terminal of the triode Q2, and a connection terminal is connected to an emitter of the amplifier P1 The output end of the amplifier P1 is connected with the collector of the triode Q1 after being connected with the capacitor C1 in series, the inverting input end of the amplifier P1 is connected with the power supply end of +12V after being connected with the resistor R4 in series, and the non-inverting input end of the amplifier P1 is connected with the resistor R5 in series and then is grounded.

Specifically, the temperature sensor M1 with the model number of DS18B20 is adopted, the temperature measuring range is-55 ℃ to +125 ℃, the precision is high, the anti-interference capability is strong, the temperature sensor M1 converts the converted temperature information into corresponding resistance values, the resistance values and the resistance values are converted into voltage signals after voltage division with a resistance R2 and then the voltage signals are sent to the inverting input end of an amplifier P2, the voltage signals are output from the amplifier P2 through a compensation capacitor C2 and then sent to a low-pass filter circuit 3 for processing, an adjustable voltage division circuit consisting of a resistance R3 and a sliding rheostat RP2, voltage signals at the upper end of the sliding rheostat RP2 pass through a compensation circuit consisting of a triode Q1, a triode Q2 and an amplifier P1, and a collector electrode of the triode Q2 is fed back to the non-inverting input end of the amplifier P2, so that the temperature measuring precision is ensured; when the ambient temperature of the network equipment does not exceed the threshold value, the amplifier P2 outputs a high level, the buzzer F1 does not work, the indicator lamp D3 is not lightened, when the ambient temperature of the network equipment exceeds the threshold value, the amplifier P2 outputs a low level, the buzzer F1 works, and the indicator lamp D3 is lightened, so that the working personnel is prompted to process the network equipment in time.

Further, as shown in fig. 3, the humidity conditioning circuit 2 includes an amplifier P3, an amplifier P4, a slide rheostat RP3, the models of the amplifier P3 and the amplifier P4 are OPA2336, and the model of the temperature sensor M2 is HR 12; one end of the humidity sensor RS1 is connected with a +5V power supply end, the other end of the humidity sensor RS1 is connected with the resistor R11 in series and then grounded, a connecting line between the humidity sensor RS1 and the resistor R11 is connected with the non-inverting input end of the amplifier P3, the inverting input end of the amplifier P3 is respectively connected with one end of the resistor R8 and one end of the resistor R9, the other end of the resistor R8 is grounded, the other end of the resistor R9 is respectively connected with the output end of the amplifier P3, one end of the resistor R12 is connected, the other end of the resistor R12 is connected with the non-inverting input end of the amplifier P4, the inverting input end of the amplifier P4 is connected with the sliding end of the slide rheostat RP3, one end of the slide rheostat RP3 is connected with the resistor R10 in series and then is grounded, the other end of the slide rheostat RP3 is connected with a +5V power supply end, the output end of the amplifier P4 is connected with a b wiring terminal, and the b wiring terminal is connected with a c wiring terminal in the low-pass filter circuit 3.

Specifically, a humidity sensor RS1 of the model HR12 is adopted, the working humidity is 20% -95%, the precision is high, the response speed is high, when the ambient humidity changes, the resistance value of the humidity sensor RS1 changes, so that a voltage dividing circuit composed of a resistor R11 and a humidity sensor RS1 changes, namely the voltage of a non-inverting input terminal of an amplifier P3 changes, a vcc terminal of an amplifier P3 is connected with +5V, a gnd terminal of the amplifier P3 is connected with ground, the resistor R9 and an operational amplifier P3 form a non-inverting proportional amplifier, the amplification factor of the proportion can be adjusted by adjusting the values of the resistor R8 and the resistor R9, then the non-inverting input terminal of the amplifier P4 is connected through a resistor R12, the inverting input terminal of the amplifier P is connected with a threshold voltage composed of a variable resistor RP3 and a resistor R10, the amplifier P4 performs voltage comparison to output a high level and a low level, when the ambient humidity of the network device does not exceed the threshold, when the amplifier P4 outputs a high level, the buzzer F1 does not work, the indicator lamp D3 is not lighted, when the environmental humidity of the network equipment exceeds a threshold value and the amplifier P4 outputs a low level, the buzzer F1 works, and the indicator lamp D3 is lighted, so that the working personnel is prompted to process in time.

Further, as shown in fig. 4, the low-pass filter circuit 3 includes: the type of the amplifier P5 and the type of the amplifier P4 are both TLV2252AID, the non-inverting input end of the amplifier P4 is connected in series with a resistor R4 and a capacitor C4 in sequence and then is grounded, a connection line between the resistor R4 and the capacitor C4 is connected with a C connection terminal, the inverting input end of the amplifier P4 is connected in series with a resistor R4 and a resistor R4 in sequence and then is connected with the inverting input end of the amplifier P4 and one end of a capacitor C4, a connection line between the resistor R4 and the resistor R4 is connected with the output end of the amplifier P4, the other end of the capacitor C4 is connected with the output end of the amplifier P4, one end of the resistor R4 and one end of the resistor R4, the other end of the resistor R4 is connected with one end of the non-inverting input end of the capacitor C4, one end of the resistor R4 and one end of the triode Q4, the collector electrode of the capacitor C4 is connected with a zener diode D4, and the collector electrode of the capacitor C4, and the other end of the collector of the capacitor C4 are connected with the output end of the output terminal of the capacitor D4 of the capacitor C4, and the output terminal of the capacitor C4 are connected with the transformer, and the output terminal of the TLV diode D4, and the output terminal of the capacitor C4, and the output terminal of the transformer, and the second end of the capacitor D4 of the capacitor C4 are connected with the second end of the capacitor C4, and the second end of the capacitor D4, and the second end of the third end of the second end of the capacitor C4, and the second end of the third end of the capacitor C4, and the second end of the third end of the capacitor C4, and the second series of the capacitor C4, and the second end of the second series of the capacitor D of the second series of the capacitor C4, and the third end of the second series of the capacitor C4 are connected with the second series of the third end of the capacitor C4, and the third end of the capacitor C4, and the third end of the second series of the capacitor C4, the second series of the third end of the capacitor C4, and the second series of the third series of the second series of the third series, One end of a slide rheostat RP4 is connected with the ground, the cathode of a voltage-stabilizing diode D3 is respectively connected with one end of a resistor R18 and the base of a triode Q4, the emitter of the triode Q4 is connected with the slide end of the slide rheostat RP4, the other end of the slide rheostat RP4 is connected with an inductor L1 in series and then is connected with an e terminal of an A/D conversion circuit 4 through a D terminal, a connecting wire between the other end of the slide rheostat RP 6368628 and the inductor L9 is connected with a capacitor C6 in series and then is grounded, a connecting wire between an inductor L1 and a D terminal is connected with a capacitor C7 in series and then is grounded, the non-inverting input end of an amplifier P6 is respectively connected with the emitter of a triode Q3 and one end of a capacitor C8, the other end of a capacitor C8 is connected with the anode of a voltage-stabilizing diode D2 in series and then is grounded, the cathode of the voltage-stabilizing diode D2 is connected with a resistor R19 and a power supply end of +5V in turn, a connecting wire between the cathode of a voltage-stabilizing diode D366 and the resistor R19 is connected with the base of a transistor Q3, the connection between the resistor R19 and the resistor R20 is connected to the collector of the transistor Q3,

specifically, the amplifier P5 and the amplifier P6 form a dual-operational amplifier band-pass filter, a second-order low-pass filter network formed by the resistor R13, the resistor R16 and the capacitors C3 and C4 plays a good role in inhibiting external high-frequency noise waves in the dual-operational amplifier adjusting process, interference signals in electric signals are effectively inhibited, and therefore the accuracy of the electric signals received by the single chip microcomputer is effectively ensured; the non-inverting input end of the amplifier P6 is connected with a voltage stabilizing device, the voltage stabilizing device consists of a triode Q3, a voltage stabilizing diode D2, a resistor R19, a resistor R20 and a +5V power supply, the +5V power supply drives a triode Q3 to be conducted after resistance voltage division, and the voltage stabilizing diode D2 plays a stabilizing role in the base voltage of the triode Q3, so that the output voltage of the triode Q3 is ensured to have a very good stable value, a good reference voltage is provided for the non-inverting input end of the amplifier P6, and the resolution of a system for the circuit acquisition signal value output by the amplifier P6 is improved; the output signal of the amplifier P6 is filtered by an RC formed by a resistor R17 and a capacitor C5, and then is sent to a triode voltage stabilizer formed by a triode Q4, a resistor R18 and a voltage stabilizing diode D3 for stabilization, the stability of the output potential of the temperature and humidity signal can be well improved by utilizing the principle of the triode voltage stabilizer, the signal output potential range is adapted to the receiving range of the A/D conversion circuit 4 after being output and adjusted by a slide rheostat RP4, the normal collection of temperature and humidity data is ensured, a pi-type LC filter is formed at the circuit processing output end of an inductor L1, the capacitor C7 and the capacitor C7, external clutter and high-frequency clutter interference generated by self excitation in the circuit are effectively prevented, the ripple noise is effectively inhibited, and the temperature and humidity signal is more accurate.

Further, the a/D conversion circuit 4 includes an a/D conversion chip U2, the model of the a/D conversion chip U2 is ADC0804, the WR end of the a/D conversion chip U2 is connected to the P3.4 end of the single chip microcomputer U1, the RD end of the a/D conversion chip U2 is connected to the P3.3 end of the single chip microcomputer U1, the CS end of the a/D conversion chip U2 is connected to the P3.2 end of the single chip microcomputer U1, the IN end of the a/D conversion chip U2 is connected IN series with a capacitor C9 respectively to the IN-end of the a/D conversion chip U2, the AGND end of the a/D conversion chip U2, and the DGND end of the a/D conversion chip U2, a connection line between the DGND end of the a/D conversion chip U2 and the ground is connected IN series with a resistor R24, a resistor R23 and then connected with a V5V, a connection line between the resistor R24 and a resistor R23 is connected with the power supply end of the a/D conversion chip U2, the IN + end of the A/D conversion chip U2 is connected with a resistor R4 IN series and then connected with an OUTPUT end of an amplifier U2, the DB7 end of the A/D conversion chip U2 is connected with a P1.7 end of a singlechip U1, the DB6 end of the A/D conversion chip U2 is connected with a P1.6 end of the singlechip U1, the DB5 end of the A/D conversion chip U2 is connected with a P1.5 end of the singlechip U1, the DB2 end of the A/D conversion chip U2 is connected with a P1.4 end of the singlechip U2, the DB2 end of the A/D conversion chip U2 is connected with a P1.3 end of the singlechip U2, the DB2 end of the A/D conversion chip U2 is connected with a P1.2 end of the U2, the DB2 end of the A/D conversion chip U2 is connected with a P1.1 end of the singlechip U2, the DB2 end of the A/D conversion chip U2 is connected with a P2 end of the singlechip U2, the DB2 end of the singlechip U2 is connected with a P1.3 end of the singlechip U2, the DB2 of the A/D conversion chip U2 is connected with a P2 end of the singlechip U2, and the DB2 of the singlechip U2 end of the singlechip U2, and the DB2 end of the A/D conversion chip is connected with the P2 end of the P2 of the singlechip U2, and the P2 of the singlechip U2 of the A/D conversion chip is connected with the P2 of the singlechip U2, and the P2 of the singlechip U2 of the P2 of the A/D conversion chip is connected with the P2 of the P6855 end of the singlechip U2 of the P2 of the A/D conversion chip U2, and the P2 of the A/D conversion chip U2 of the I of the A/D conversion chip U2 of the P2 of the I of the singlechip U6855; specifically, the a/D conversion chip U2 is an 8-bit, single-channel, low-price a/D converter, and is mainly characterized in that: the analog-to-digital conversion time is about 100 us; the circuit facilitates TTL or CMOS standard interfaces, can meet differential voltage input, has a reference voltage input end, is internally provided with a clock generator, and has low price and wide application range.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A network equipment environmental data's collection circuit which characterized in that: the method comprises the following steps: temperature sensor M1, humidity transducer M2, temperature conditioning circuit (1), humidity conditioning circuit (2), low pass filter circuit (3), AD converting circuit (4), singlechip U1 and wireless communication module (5), temperature sensor M1, humidity transducer M2 link to each other through the input of temperature conditioning circuit (1), humidity conditioning circuit (2) and low pass filter circuit (3) respectively, the output of low pass filter circuit (3) passes through AD converting circuit (4) and links to each other with singlechip U1's input, singlechip U1's output passes through wireless communication module (5) and links to each other with control center.

2. The network device environment data acquisition circuit according to claim 1, wherein: the temperature conditioning circuit (1) comprises an amplifier P1, an amplifier P2, a triode Q1, a triode Q2, a sliding rheostat RP1 and a sliding rheostat RP2, wherein a third connecting terminal of the temperature sensor M1 is connected with one end of a resistor R1, the other end of the resistor R1 is respectively connected with a second connecting terminal of the temperature sensor M1, one end of a resistor R2, an inverting input end of the amplifier P2, a collector of the triode Q2 and one end of a capacitor C2, a first connecting terminal of the temperature sensor M1, the other end of the resistor R2 and a non-inverting input end of the amplifier P2 are respectively grounded, an output end of the amplifier P2 is respectively connected with the other end of the capacitor C2, one end of a connecting terminal R3 and an a connecting terminal, the other end of the resistor R3 is respectively connected with a sliding end of the sliding rheostat RP2, one end of the sliding rheostat RP2 and a base of the triode Q1, and the other end of the sliding rheostat RP2 is grounded, the a wiring terminal is connected with a C wiring terminal in the low-pass filter circuit (3), an emitting electrode of the triode Q1 is connected with an emitting electrode of the triode Q2, a connecting line between the emitting electrode of the triode Q1 and the emitting electrode of the triode Q2 is connected with a resistor R6 in series and then is connected with an output end of an amplifier P1, an output end of the amplifier P1 is connected with a collector electrode of the triode Q1 in series after being connected with a capacitor C1 in series, an inverting input end of the amplifier P1 is connected with a resistor R4 in series and then is connected with a power supply end of +12V, and a non-inverting input end of the amplifier P1 is connected with a resistor R5 in series and then is grounded.

3. The network device environment data acquisition circuit according to claim 1, wherein: the humidity conditioning circuit (2) comprises an amplifier P3, an amplifier P4 and a slide rheostat RP3, wherein one end of a humidity sensor RS1 is connected with a +5V power supply end, the other end of the humidity sensor RS1 is connected with a resistor R11 in series and then grounded, a connecting line between the humidity sensor RS1 and the resistor R11 is connected with a non-inverting input end of the amplifier P3, an inverting input end of the amplifier P3 is respectively connected with one end of a resistor R8 and one end of a resistor R9, the other end of the resistor R8 is grounded, the other end of the resistor R9 is respectively connected with an output end of the amplifier P3 and one end of a resistor R12, the other end of the resistor R12 is connected with a non-inverting input end of the amplifier P4, the inverting input end of the amplifier P4 is connected with a sliding end of the slide rheostat RP3, one end of the slide rheostat RP3 is connected with a resistor R10 and then grounded, the other end of the slide rheostat 3 is connected with a +5V power supply end, and the output end of the amplifier P4 is connected with a b terminal, and the b wiring terminal is connected with a c wiring terminal in the low-pass filter circuit (3).

4. The network device environment data acquisition circuit according to claim 1, wherein: the low-pass filter circuit (3) comprises: an amplifier P5, an amplifier P6, a triode Q3, a triode Q4 and a slide rheostat RP4, wherein a non-inverting input end of the amplifier P5 is connected with a resistor R13 and a capacitor C3 in series in sequence and then grounded, a connecting line between the resistor R13 and a capacitor C3 is connected with a C-terminal, an inverting input end of the amplifier P5 is connected with a resistor R14 and a resistor R15 in sequence and then respectively connected with an inverting input end of the amplifier P6 and one end of a capacitor C4, a connecting line between the resistor R14 and the resistor R15 is connected with an output end of the amplifier P5, the other end of the capacitor C4 is connected with an output end of the amplifier P6, one end of the resistor R16 and one end of the resistor R17, the other end of the resistor R16 is connected with a non-inverting input end of the amplifier P5, the other end of the resistor R17 is connected with one end of the capacitor C5, one end of the resistor R18 and a collector of the triode Q4, the other end of the capacitor C5 is connected with an anode of a zener diode D3 and one end of the slide rheostat RP4, the cathode of a voltage stabilizing diode D3 is respectively connected with one end of a resistor R18 and the base of a triode Q4, the emitter of a triode Q4 is connected with the sliding end of a sliding rheostat RP4, the other end of the sliding rheostat RP4 is connected with an inductor L1 in series and then is connected with an e wiring terminal of an A/D conversion circuit (4) through a D wiring terminal, a connecting wire between the other end of the sliding rheostat RP4 and an inductor L1 is connected with a capacitor C6 in series and then is grounded, a connecting wire between the inductor L1 and a D wiring terminal is connected with a capacitor C7 in series and then is grounded, the non-inverting input end of an amplifier P6 is respectively connected with the emitter of a triode Q3 and one end of a capacitor C8, the other end of a capacitor C8 is connected with the anode of a voltage stabilizing diode D2 and then is grounded, the cathode of the voltage stabilizing diode D2 is connected with a resistor R19 and a resistor R20 in series and then is connected with a power supply end of +5V, the connecting wire between the cathode of the voltage stabilizing diode D2 and the cathode of the resistor R19 is connected with the base of a triode Q3, the connection between the resistor R19 and the resistor R20 is connected to the collector of the transistor Q3.

5. The network device environment data acquisition circuit according to claim 1, wherein: the A/D conversion circuit (4) comprises an A/D conversion chip U2, the WR end of the A/D conversion chip U2 is connected with the P3.4 end of the singlechip U1, the RD end of the A/D conversion chip U2 is connected with the P3.3 end of the singlechip U1, the CS end of the A/D conversion chip U2 is connected with the P3.2 end of the singlechip U1, the CLKIN end of the A/D conversion chip U2 is connected with a capacitor C9 IN series and is respectively connected with the IN-end of the A/D conversion chip U2, the AGND end of the A/D conversion chip U2 and the ND end of the A/D conversion chip U2 and then is grounded, a connecting wire between the DGND end of the A/D conversion chip U2 and a power supply end R24 and a resistor 573R 23V after being connected with the connecting wire between the resistors R24 and REF R23 is connected with the DGND end of the A/D conversion chip U2, the A/D conversion chip U2 is connected with a resistor OUTT 2 after being connected with the power supply end of the OUTT amplifier, the DB7 end of the A/D conversion chip U2 is connected with the P1.7 end of the single chip microcomputer U1, the DB6 end of the A/D conversion chip U2 is connected with the P1.6 end of the single chip microcomputer U1, the DB5 end of the A/D conversion chip U2 is connected with the P1.5 end of the single chip microcomputer U1, the DB4 end of the A/D conversion chip U2 is connected with the P1.4 end of the single chip microcomputer U1, the DB3 end of the A/D conversion chip U2 is connected with the P1.3 end of the single chip microcomputer U1, the DB2 end of the A/D conversion chip U2 is connected with the P1.2 end of the single chip microcomputer U1, the DB1 end of the A/D conversion chip U2 is connected with the P1.1 end of the single chip microcomputer U1, the DB0 end of the A/D conversion chip U2 is connected with the P1.0 end of the single chip microcomputer U1, and the R2 end of the single chip microcomputer U465 is connected with the P3.3 end of the P3.5 end of the single chip microcomputer U1.

6. The network device environment data acquisition circuit according to claim 2, wherein: the type of the single chip microcomputer U1 is AT89C 51; the models of the amplifier P1 and the amplifier P2 are OPA 2336; the model of the temperature sensor M1 is DS18B 20.

7. The network device environment data acquisition circuit according to claim 3, wherein: the type of the amplifier P3 and the type of the amplifier P4 are both OPA2336, and the type of the temperature sensor M2 is HR 12.

8. The network device environment data acquisition circuit according to claim 4, wherein: the models of the amplifier P5 and the amplifier P6 are all TLV2252 AID.

9. The network device environment data acquisition circuit according to claim 5, wherein: the model of the A/D conversion chip U2 is ADC 0804.

10. The network device environment data acquisition circuit according to claim 1, wherein: the wireless communication module (5) is an NRF401 radio frequency transceiver chip.