CN211904471U - Acousto-optic warning circuit for visual monitoring machine room - Google Patents
Acousto-optic warning circuit for visual monitoring machine room Download PDFInfo
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- CN211904471U CN211904471U CN202020730907.4U CN202020730907U CN211904471U CN 211904471 U CN211904471 U CN 211904471U CN 202020730907 U CN202020730907 U CN 202020730907U CN 211904471 U CN211904471 U CN 211904471U
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Abstract
The utility model discloses a reputation warning circuit that visual control computer lab was used, include: temperature sensor P1, temperature signal conditioning circuit, AD converting circuit, singlechip U1, alarm circuit and wireless communication circuit, the temperature value that gathers when temperature sensor P1 is greater than the warning threshold value that sets up in advance, then send the warning suggestion through alarm circuit, remind the staff to carry out timely processing, and simultaneously, the temperature value that temperature sensor P1 gathered passes through wireless communication unit real-time transmission to the remote monitoring host computer, be convenient for the staff in the background real-time supervision equipment temperature value and judge which equipment work is unusual, and then overhaul or change work abnormal equipment, reduce the problem that causes visual monitoring paralysed computer lab because of the equipment damage, the security of computer lab work has been improved.
Description
Technical Field
The utility model belongs to the technical field of visual control computer lab, concretely relates to reputation warning circuit that visual control computer lab was used.
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 a 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 important devices such as servers, switches, routers and GPS clocks are arranged in the machine room, and in order to guarantee the safe and reliable operation of the devices in the machine room, the state of the machine room environment is required to be improved. A good computer lab environment can the safe operation of the interior equipment of effectual guarantee computer lab, gives the support to whole electric power system's stability, during the operation of computer lab equipment, can produce a large amount of heats, and the high temperature causes equipment to damage easily to lead to direct and indirect economic loss.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the deficiencies in the prior art, the technical problem who solves is: the acousto-optic warning circuit for the visual monitoring machine room can monitor the temperature of equipment in the machine room and give an alarm when the temperature reaches an early warning value.
In order to solve the technical problem, the utility model discloses a technical scheme be: an acousto-optic warning circuit for visually monitoring a machine room, comprising: the temperature sensor P1, temperature signal conditioning circuit, AD converting circuit, singlechip U1, alarm circuit and wireless communication circuit, temperature sensor P1 links to each other with the input of AD converting circuit through temperature signal conditioning circuit, the output of AD converting circuit passes through singlechip U1 and links to each other with alarm circuit, singlechip U1's output passes through wireless communication circuit and remote monitoring host computer communication connection.
Preferably, the temperature signal conditioning circuit comprises an amplifier U2, a-GR end of the amplifier U2 is connected with a + GR end of the amplifier U2 after being connected with a resistor R3 IN series, a-IN end of the amplifier U2 is connected with a resistor R1 IN series and is connected with a 5V power supply end, a connecting line between a-IN end of the amplifier U2 and a resistor R1 is connected with the resistor R2 and then grounded, a + IN end of the amplifier U2 is connected with a DQ end of the temperature sensor P1, a-Vs end of the amplifier U2 and a REF end of the amplifier U2 are grounded respectively, a + Vs end of the amplifier U2 is connected with a capacitor C1 and then grounded, a connecting line between a + Vs end of the amplifier U2 and a capacitor C1 is connected with the 5V power supply end, and a PUOUTT end of the amplifier U2 is connected with an input end of the.
Preferably, the a/D conversion circuit comprises an a/D conversion chip U3, a WR end of the a/D conversion chip U3 is connected with a P3.4 end of a single chip microcomputer U1, an RD end of the a/D conversion chip U3 is connected with a P3.3 end of a single chip microcomputer U1, a CS end of the a/D conversion chip U3 is connected with a P3.2 end of a single chip microcomputer U1, a CLKIN end of the a/D conversion chip U3 is connected IN series with a capacitor C2 which is respectively connected with an IN-end of the a/D conversion chip U3, an AGND end of the a/D conversion chip U3, and a DGND end of the a/D conversion chip U3 and then grounded, a connecting line between the DGND end of the a/D conversion chip U638 and a ground end of a resistor R5 is sequentially connected IN series with a resistor R6, a resistor R5 and then connected with 5V, a connecting line between the resistor R6 and the resistor R5 is connected with a ground end of the a/D conversion chip U3, and a resistor vref 2 is connected with a ground end of the OUTPUT terminal of the single chip U4642, the DB7 end of the A/D conversion chip U3 is connected with the P1.7 end of the singlechip U1, the DB6 end of the A/D conversion chip U3 is connected with the P1.6 end of the singlechip U1, the DB5 end of the A/D conversion chip U3 is connected with the P1.5 end of the singlechip U1, the DB4 end of the A/D conversion chip U3 is connected with the P1.4 end of the singlechip U1, the DB3 end of the A/D conversion chip U3 is connected with the P1.3 end of the singlechip U1, the DB2 end of the A/D conversion chip U3 is connected with the P1.2 end of the singlechip U1, the DB1 end of the A/D conversion chip U3 is connected with the P1.1 end of the singlechip U1, the DB3 end of the A/D conversion chip U3 is connected with the P1.0 end of the singlechip U3, and the INT 3 end of the singlechip U72 is connected with the P3.3 end of the singlechip U365.
Preferably, the alarm circuit comprises a buzzer F1 and a light emitting diode D1, one end of the buzzer F1 is connected with one end of a resistor R10 and then grounded, the other end of the resistor R10 is connected with the negative electrode of the light emitting diode D1, the positive electrode of the light emitting diode D1 is connected with the other end of the buzzer F1 and the collector of a triode Q1 respectively, the emitter of the triode Q1 is connected with a 5V power supply end, and the base of the triode Q1 is connected with the P3.1 end of the singlechip U1 after being connected with the resistor R9 in series.
Preferably, the wireless communication circuit includes a wireless communication chip U4, a PWR _ UP terminal of the wireless communication chip U4 is connected to a P2.4 terminal of a single chip U2, a PXEN terminal of the wireless communication chip U4 is connected to a P2.3 terminal of a single chip U2, a CS terminal of the wireless communication chip U4 is connected to a P2.2 terminal of a single chip U2, a DIN terminal of the wireless communication chip U4 is connected to a P2.1 terminal of a single chip U2, a DOUT terminal of the wireless communication chip U4 is connected to a P2.0 terminal of the single chip U4, an XC 4 terminal of the wireless communication chip U4 is connected in series to a capacitor C4 and then grounded, a resistor R4 is connected in parallel to an XC 4 terminal of the wireless communication chip U4 and a VCO resistor R4 is connected to a VCO 4 terminal of the wireless communication chip U4 and a VCO 72 terminal PF communication chip U4 is connected to a wireless communication terminal of the wireless communication chip U4 and a VCO 3 One end of a capacitor C12, one end of a capacitor C11, and a VSS4 end of the wireless communication chip U4 are connected, the other end of the capacitor C12 is connected in series with a resistor R11 and then is connected to the other end of a capacitor C11 and a FILT1 end of the wireless communication chip U4, an ANT2 end of the wireless communication chip U4 is connected to one end of a capacitor C8, one end of a capacitor C9, one end of an inductor L9, and one end of an inductor L9, the other end of the capacitor C9 is grounded, the other end of the capacitor C9 is connected to the ANT 9 end of the wireless communication chip U9, one end of the capacitor C9, the other end of the inductor L9, and one end of the inductor L9, the other end of the capacitor C9 is grounded, the other end of the inductor L9 is connected in series with the capacitor C9 and then is grounded, and a connection line between the capacitor C9 is connected to the antenna.
Preferably, the amplifier U2 is of type AD623, and the temperature sensor P1 is of type DS18B 20.
Preferably, the model of the A/D conversion chip U3 is ADC0804, and the model of the singlechip U1 is AT89C 51.
Preferably, the model of the wireless communication chip U4 is NRF 401.
Compared with the prior art, the utility model following beneficial effect has:
the utility model relates to an acousto-optic alarm circuit for a visual monitoring machine room, a temperature sensor P1 monitors the current temperature signal, the current temperature signal is amplified by a temperature signal conditioning circuit, the analog signal is converted into a digital signal by an A/D conversion circuit and then sent to a singlechip U1 for processing, if the acquired temperature value is larger than a preset alarm threshold value, an alarm prompt is sent out through an alarm circuit to remind a worker to process in time, meanwhile, the temperature value collected by the temperature sensor P1 is transmitted to the remote monitoring host through the wireless communication circuit in real time, so that the worker can monitor the temperature value in the equipment in real time at the background and judge which equipment works abnormally, and then overhaul or change unusual equipment of work, reduce the paralysed problem of visual monitoring computer lab that causes because of equipment damages, improved the security of computer lab work.
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 the present invention;
in the figure: 1 is a temperature signal conditioning circuit, 2 is an A/D conversion circuit, 3 is an alarm circuit, and 4 is a wireless communication circuit.
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, but not all, embodiments of the present invention; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, an acousto-optic alarm circuit for visually monitoring a machine room includes: temperature sensor P1, temperature signal conditioning circuit 1, AD converting circuit 2, singlechip U1, alarm circuit 3 and wireless communication circuit 4, temperature sensor P1 links to each other through temperature signal conditioning circuit 1 and AD converting circuit 2's input, AD converting circuit 2's output passes through singlechip U1 and links to each other with alarm circuit 3, singlechip U1's output passes through wireless communication circuit 4 and remote monitoring host communication connection.
Specifically, the temperature sensor P1 is arranged in the equipment of the visual monitoring machine room, the temperature sensor P1 monitors the current temperature signal, the current temperature signal is amplified by the temperature signal conditioning circuit 1, the analog signal is converted into a digital signal by the A/D conversion circuit 2 and then sent to the singlechip U1 for processing, if the acquired temperature value is larger than a preset alarm threshold value, an alarm prompt is sent out through the alarm circuit 3 to remind the staff of timely processing, meanwhile, the temperature value collected by the temperature sensor P1 is transmitted to the remote monitoring host through the wireless communication circuit 4 in real time, so that the staff can monitor the temperature value in the equipment in real time at the background and judge which equipment works abnormally, and then overhaul or change unusual equipment of work, reduce the paralysed problem of visual monitoring computer lab that causes because of equipment damages, improved the security of computer lab work.
Further, the temperature signal conditioning circuit 1 includes an amplifier U2, the type of the amplifier U2 is AD623, the type of the temperature sensor P1 is DS18B20, a-GR end of the amplifier U2 is connected IN series with a resistor R3 and then connected to a + GR end of an amplifier U2, an-IN end of the amplifier U2 is connected IN series with a resistor R1 and then connected to a 5V power supply terminal, a connection line between a-IN end of the amplifier U2 and the resistor R1 is connected IN series with a resistor R2 and then grounded, a + IN end of the amplifier U2 is connected to a DQ end of the temperature sensor P1, a-Vs end of the amplifier U2 and a REF end of the amplifier U2 are grounded respectively, a + Vs end of the amplifier U2 is connected IN series with a capacitor C1 and then grounded, a connection line between a + Vs end of the amplifier U2 and a capacitor C1 is connected to a 5V power supply terminal, and an OUTPUT end of the amplifier 2 is connected to an input end of the.
Specifically, a temperature sensor P1 with the model number of DS18B20 is used as a temperature measuring element, and DS18B20 has the characteristics of small size, strong anti-interference capability, high precision, strong anti-interference capability, low price and the like, so that the temperature sensor is widely used as a temperature sensor at present, the temperature measuring range is between minus 55 ℃ and plus 125 ℃, the temperature measuring error is plus or minus 0.5 ℃, and the temperature sensor has the characteristics of supporting the automatic networking function of a plurality of sub-nodes and the like, the temperature sensor P1 converts the converted temperature information into corresponding resistance values, converts the resistance values into voltage signals after voltage division with a resistor R2, sends the voltage signals into a plus IN end of an amplifier U2, and sends one path of the voltage signals into an A/D conversion circuit 2 for conversion after OUTPUT by an OUTPUT end of an amplifier; the amplifier U2, model AD623, is an integrated single power instrumentation amplifier that provides full power supply amplitude output at a single power supply (+ 3V to + 12V). It allows gain programming with a single gain setting resistor for better flexibility, AD623 keeps minimum error by providing excellent ac common mode rejection ratio increasing with gain increase, line noise and harmonics will remain constant up to 200HZ due to CMRR, it has a wider common mode input range, it can amplify common mode voltage signals with 150mv below ground level, still provides good performance at dual power supply (2.5 to 6V), low power consumption, wide supply voltage range, full supply amplitude output, and provides good linearity in minimum space, temperature stability is reliable.
Further, the a/D conversion circuit 2 comprises an a/D conversion chip U3, the model of the a/D conversion chip U3 is ADC0804, and the model of the single chip microcomputer U1 is AT89C 51; the WR end of the A/D conversion chip U3 is connected with the P3.4 end of the singlechip U1, the RD end of the A/D conversion chip U3 is connected with the P3.3 end of the singlechip U1, the CS end of the A/D conversion chip U3 is connected with the P3.2 end of the singlechip U1, the CLKIN end of the A/D conversion chip U3 is connected with a capacitor C2 IN series and is respectively connected with the IN-end of the A/D conversion chip U3, the AGND end of the A/D conversion chip U3 and the DGND end of the A/D conversion chip U3 and then is grounded, a connecting line between the DGND end of the A/D conversion chip U3 and the grounding end is sequentially connected with a resistor R6 IN series, a resistor R5 and then is connected with a 5V power supply end, a connecting line between the resistor R6 and the resistor R5 is connected with the REF end of the A/D conversion chip U3, the IN + end of the A/D conversion chip U3 is connected with the OUTP end of the resistor R4 and the PUT 599 end of the singlechip U599, the DB6 end of the A/D conversion chip U3 is connected with the P1.6 end of the singlechip U1, the DB5 end of the A/D conversion chip U3 is connected with the P1.5 end of the singlechip U1, the DB4 end of the A/D conversion chip U3 is connected with the P1.4 end of the singlechip U1, the DB3 end of the A/D conversion chip U3 is connected with the P1.3 end of the singlechip U1, the DB2 end of the A/D conversion chip U3 is connected with the P1.2 end of the singlechip U1, the DB1 end of the A/D conversion chip U3 is connected with the P1.1 end of the singlechip U1, the DB0 end of the A/D conversion chip U3 is connected with the P1.0 end of the singlechip U1, and the INTR end of the A/D conversion chip U3 is connected with the P3.5 end of the singlechip U1; the A/D conversion chip U3 is an 8-bit, single-channel and 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.
Further, the alarm circuit 3 comprises a buzzer F1 and a light emitting diode D1, one end of the buzzer F1 is connected with one end of a resistor R10 and then grounded, the other end of the resistor R10 is connected with the negative electrode of a light emitting diode D1, the positive electrode of the light emitting diode D1 is connected with the other end of the buzzer F1 and the collector of a triode Q1 respectively, the emitter of the triode Q1 is connected with a 5V power supply end, and the base of the triode Q1 is connected with the P3.1 end of a singlechip U1 after being connected with a resistor R9 in series; buzzer F1 and emitting diode D1 set up in visual monitoring computer lab, temperature signal that singlechip U1 received temperature sensor P1 and gathered, when the temperature in the computer lab does not exceed the threshold value, singlechip U1's P3.1 end output high level, buzzer F1 is out of work, pilot lamp D1 is not bright, when the temperature in the computer lab exceeds the threshold value, singlechip U1's P3.1 end output low level, buzzer F1 work, pilot lamp D1 is bright, the suggestion staff in time handles.
Further, the wireless communication circuit 4 includes a wireless communication chip U4, the wireless communication chip U4 is NRF401, the PWR _ UP terminal of the wireless communication chip U4 is connected to the P2.4 terminal of the single chip microcomputer U2, the PXEN terminal of the wireless communication chip U4 is connected to the P2.3 terminal of the single chip microcomputer U2, the CS terminal of the wireless communication chip U4 is connected to the P2.2 terminal of the single chip microcomputer U4, the DIN terminal of the wireless communication chip U4 is connected to the P2.1 terminal of the single chip microcomputer U4, the DOUT terminal of the wireless communication chip U4 is connected to the P2.0 terminal of the single chip microcomputer U4, the XC 4 terminal of the wireless communication chip U4 is connected in series to the C4 terminal of the single chip microcomputer U4 and then grounded, the XC 4 terminal of the wireless communication chip U4 is connected in series to the C4 terminal of the wireless communication chip U4 and then connected to the ground terminal of the VCO chip U4, the XC 4 terminal of the wireless communication chip U4, the VCO chip R4 is connected in series to the XC 4 terminal of the VCO 4, the VCO chip PF terminal of the wireless communication chip U4, and the wireless communication chip U4, the VCO chip U4, One end of a capacitor C12, one end of a capacitor C11, and a VSS4 end of a wireless communication chip U4 are connected, the other end of a capacitor C12 is connected in series with a resistor R11 and then is connected with the other end of a capacitor C11 and a FILT1 end of a wireless communication chip U4, an ANT2 end of the wireless communication chip U4 is connected with one end of a capacitor C8, one end of a capacitor C9, one end of an inductor L9, and one end of an inductor L9, the other end of the capacitor C9 is grounded, the other end of the capacitor C9 is connected in series with the ANT 9 end of the wireless communication chip U9, one end of the capacitor C9, the other end of the inductor L9, and one end of the inductor L9, the other end of the capacitor C9 is grounded, the other end of the inductor L9 is connected in series with the capacitor C9 and then is grounded, and a connecting line between the capacitor C9 is connected with an antenna; the wireless communication chip U4 is in communication connection with a remote monitoring host, a temperature signal acquired by the temperature sensor P1 is received by the singlechip U1 and is sent to the wireless communication chip U3, and a worker observes a temperature value of equipment in an equipment room by using the remote monitoring host; the wireless communication circuit 4 is an existing module, and the specific wireless transmission process thereof is not described herein.
The utility model relates to an acousto-optic warning circuit that visual control computer lab was used, temperature signal conditioning circuit 1 handles through the signal to temperature sensor P1 collection, sends to singlechip U1 through AD converting circuit 2, and singlechip U1 sends the signal after handling to the remote monitoring host computer through wireless communication circuit 4 to effectively avoided the emergence of accidents such as conflagration, guaranteed the safe operation of computer lab equipment
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides an acousto-optic warning circuit that visual control computer lab was used which characterized in that: the method comprises the following steps: temperature sensor P1, temperature signal conditioning circuit (1), AD converting circuit (2), singlechip U1, warning circuit (3) and wireless communication circuit (4), temperature sensor P1 links to each other through the input of temperature signal conditioning circuit (1) with AD converting circuit (2), the output of AD converting circuit (2) passes through singlechip U1 and links to each other with warning circuit (3), singlechip U1's output passes through wireless communication circuit (4) and remote monitoring host computer communication connection.
2. The acousto-optic warning circuit for the visual monitoring machine room according to claim 1, characterized in that: the temperature signal conditioning circuit (1) comprises an amplifier U2, wherein a-GR end of an amplifier U2 is connected with a + GR end of an amplifier U2 after being connected with a resistor R3 IN series, a-IN end of the amplifier U2 is connected with a resistor R1 IN series and then connected with a 5V power supply end, a connecting line between a-IN end of an amplifier U2 and a resistor R1 is connected with the resistor R2 IN series and then grounded, a + IN end of an amplifier U2 is connected with a DQ end of a temperature sensor P1, a-Vs end of an amplifier U2 and a REF end of the amplifier U2 are grounded respectively, a + Vs end of an amplifier U2 is connected with a capacitor C1 IN series and then grounded, a connecting line between a + Vs end of an amplifier U2 and a capacitor C1 is connected with the 5V power supply end, and a PUOUTT end of the amplifier U2 is connected with an input.
3. The acousto-optic warning circuit for the visual monitoring machine room according to claim 2, characterized in that: the A/D conversion circuit (2) comprises an A/D conversion chip U3, the WR end of the A/D conversion chip U3 is connected with the P3.4 end of a singlechip U1, the RD end of the A/D conversion chip U3 is connected with the P3.3 end of a singlechip U1, the CS end of the A/D conversion chip U3 is connected with the P3.2 end of a singlechip U1, the CLKIN end of the A/D conversion chip U3 is connected with a capacitor C2 IN series and is respectively connected with the IN-end of the A/D conversion chip U3, the AGND end of the A/D conversion chip U3 and the DGND end of the A/D conversion chip U3 and then is grounded, a connecting line between the DGND end of the A/D conversion chip U638 and the DGND end is sequentially connected with a resistor R6, a resistor R5 and then is connected with 5V, a connecting line between the resistor R6 and the resistor R5 is connected with the grounding end of the A/D conversion chip U3, and the OUTW end of the A/D conversion chip U2 is connected with the OUTT 2, the DB7 end of the A/D conversion chip U3 is connected with the P1.7 end of the singlechip U1, the DB6 end of the A/D conversion chip U3 is connected with the P1.6 end of the singlechip U1, the DB5 end of the A/D conversion chip U3 is connected with the P1.5 end of the singlechip U1, the DB4 end of the A/D conversion chip U3 is connected with the P1.4 end of the singlechip U1, the DB3 end of the A/D conversion chip U3 is connected with the P1.3 end of the singlechip U1, the DB2 end of the A/D conversion chip U3 is connected with the P1.2 end of the singlechip U1, the DB1 end of the A/D conversion chip U3 is connected with the P1.1 end of the singlechip U1, the DB3 end of the A/D conversion chip U3 is connected with the P1.0 end of the singlechip U3, and the INT 3 end of the singlechip U72 is connected with the P3.3 end of the singlechip U365.
4. The acousto-optic warning circuit for the visual monitoring machine room according to claim 1, characterized in that: the alarm circuit (3) comprises a buzzer F1 and a light-emitting diode D1, one end of the buzzer F1 is connected with one end of a resistor R10 and then grounded, the other end of the resistor R10 is connected with the negative electrode of a light-emitting diode D1, the positive electrode of the light-emitting diode D1 is connected with the other end of the buzzer F1 and the collector of a triode Q1 respectively, the emitter of the triode Q1 is connected with a 5V power supply end, and the base of the triode Q1 is connected with the P3.1 end of a single chip microcomputer U1 after being connected with a resistor R9 in series.
5. The acousto-optic warning circuit for the visual monitoring machine room according to claim 3, characterized in that: the wireless communication circuit (4) comprises a wireless communication chip U4, a PWR _ UP end of the wireless communication chip U4 is connected with a P2.4 end of a singlechip U2, a PXEN end of the wireless communication chip U4 is connected with a P2.3 end of a singlechip U2, a CS end of the wireless communication chip U4 is connected with a P2.2 end of a singlechip U2, a DIN end of the wireless communication chip U4 is connected with a P2.1 end of a singlechip U2, a DOUT end of the wireless communication chip U4 is connected with a P2.0 end of the singlechip U4, an XC 4 end of the wireless communication chip U4 is connected with a capacitor C4 in series and then grounded, a resistor R4 is connected between the XC 4 end of the wireless communication chip U4 and a VCO 4 end of the wireless communication chip U4, a crystal oscillator X4 is connected with two ends of a resistor R4 in series, an inductor L4 of the wireless communication chip U4 is connected with a VCO 72 and a PF end of the VCO 4, and a VCO 4 of the VCO 4, and a VCO 36, One end of a capacitor C12, one end of a capacitor C11, and a VSS4 end of the wireless communication chip U4 are connected, the other end of the capacitor C12 is connected in series with a resistor R11 and then is connected to the other end of a capacitor C11 and a FILT1 end of the wireless communication chip U4, an ANT2 end of the wireless communication chip U4 is connected to one end of a capacitor C8, one end of a capacitor C9, one end of an inductor L9, and one end of an inductor L9, the other end of the capacitor C9 is grounded, the other end of the capacitor C9 is connected to the ANT 9 end of the wireless communication chip U9, one end of the capacitor C9, the other end of the inductor L9, and one end of the inductor L9, the other end of the capacitor C9 is grounded, the other end of the inductor L9 is connected in series with the capacitor C9 and then is grounded, and a connection line between the capacitor C9 is connected to the antenna.
6. The acousto-optic warning circuit for the visual monitoring machine room according to claim 2, characterized in that: the amplifier U2 is of the type AD623, and the temperature sensor P1 is of the type DS18B 20.
7. The acousto-optic warning circuit for the visual monitoring machine room according to claim 3, characterized in that: the model of the A/D conversion chip U3 is ADC0804, and the model of the singlechip U1 is AT89C 51.
8. The acousto-optic warning circuit for the visual monitoring machine room according to claim 5, characterized in that: the model of the wireless communication chip U4 is NRF 401.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020730907.4U CN211904471U (en) | 2020-05-07 | 2020-05-07 | Acousto-optic warning circuit for visual monitoring machine room |
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| CN202020730907.4U CN211904471U (en) | 2020-05-07 | 2020-05-07 | Acousto-optic warning circuit for visual monitoring machine room |
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| CN211904471U true CN211904471U (en) | 2020-11-10 |
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