CN211651890U - Temperature monitoring system of electrical equipment - Google Patents
Temperature monitoring system of electrical equipment Download PDFInfo
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- CN211651890U CN211651890U CN202020387082.0U CN202020387082U CN211651890U CN 211651890 U CN211651890 U CN 211651890U CN 202020387082 U CN202020387082 U CN 202020387082U CN 211651890 U CN211651890 U CN 211651890U
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Abstract
The utility model discloses a temperature monitoring system of electrical equipment, which is characterized by comprising a singlechip, a temperature acquisition unit, a display and a power supply, wherein the temperature acquisition unit, the display and the power supply are respectively connected with the singlechip; the power supply is respectively connected with the single chip microcomputer, the temperature acquisition unit and the display. The temperature acquisition unit of the utility model can provide constant working current for the temperature sensor, so that the temperature sensor can work stably; and simultaneously, the utility model discloses a temperature acquisition unit can carry out temperature signal frequency very much, prevents that the signal from appearing undulant, improves the stability of signal.
Description
Technical Field
The utility model relates to a monitoring system specifically indicates an electrical equipment's temperature monitoring system.
Background
The electric equipment can generate heat in the working process, the temperature of the electric equipment can reach high after long-time working, and the electric equipment can be damaged if the electric equipment continues to work under the condition of high temperature. Therefore, some electrical devices need to monitor their operating temperature during operation to prevent the electrical devices from operating at high temperatures. However, the conventional temperature monitoring system for the electrical equipment has insufficient stability, which causes a large error in temperature monitoring and cannot accurately monitor the temperature of the electrical equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem, provide a better electrical equipment's of stability temperature monitoring system.
The purpose of the utility model is realized through the following technical scheme: a temperature monitoring system of electrical equipment comprises a single chip microcomputer, a temperature acquisition unit, a display and a power supply, wherein the temperature acquisition unit, the display and the power supply are respectively connected with the single chip microcomputer; the power supply is respectively connected with the single chip microcomputer, the temperature acquisition unit and the display; the temperature acquisition unit comprises a temperature sensor M, an amplifier P1, a triode VT1, a clamping amplitude limiting circuit connected with a collector of a triode VT1, a two-stage amplifying circuit connected with the clamping amplitude limiting circuit, an RC filter circuit connected with the two-stage amplifying circuit, a resistor R1 with one end connected with the anode of the amplifier P1 and the other end connected with the collector of the triode VT1, a zener diode D1 with the N pole connected with the anode of the amplifier P1 and the P pole connected with the emitter of the triode VT1 after passing through a resistor R4, a resistor R2 with one end connected with the cathode of the amplifier P1 and the other end connected with the emitter of the triode VT1, and a resistor R3 with one end connected with the collector of the triode VT1 and the other end connected with a power supply; the output end of the temperature sensor M is connected with the collector electrode of a triode VT1, and the base electrode of a triode VT1 is connected with the output end of an amplifier P1.
Furthermore, the clamping amplitude limiting circuit comprises a diode D3, a diode D2 of which the N pole is connected with the P pole of the diode D3 and the P pole is connected with the collector of the triode VT1 after passing through a resistor R5, a capacitor C1 of which one end is connected with the collector of the triode VT1 and the other end is connected with the N pole of a diode D3, a capacitor C3 of which one end is connected with the N pole of the diode D3 and the other end is connected with the P pole of the diode D3 after passing through a resistor R7, and a capacitor C2 of which one end is connected with the N pole of the diode D3 and the other end is connected with the connection point of the capacitor C3 and the resistor R7; the P-pole of the diode D3 is also connected to a two-stage amplification circuit.
The two-stage amplifying circuit comprises a triode VT2, a triode VT3, a resistor R9 with one end connected with an emitter of the triode VT2 and the other end connected with a P electrode of a diode D3, a resistor R8 with one end connected with a collector of a triode VT2 and the other end connected with a base electrode of a triode VT2 after passing through a resistor R6, a capacitor C4 connected between the collector of a triode VT2 and the base electrode of a triode VT3 in series, and a capacitor C6 with one end connected with the emitter of the triode VT3 and the other end connected with a signal input interface of the singlechip; the base of the transistor VT2 is connected with the connection point of the capacitor C3 and the resistor R7, and the collector of the transistor VT3 is connected with the power supply.
The RC filter circuit comprises a capacitor C5 and a resistor R10, wherein one end of the capacitor C5 is connected with an emitter of the triode VT3, the other end of the capacitor C5 is connected with a P pole of the diode D3, and the resistor R10 is connected with the capacitor C5 in parallel.
The type of the single chip microcomputer is AT89S 52.
The mobile terminal also comprises a wireless communication unit connected with the singlechip and a mobile terminal connected with the wireless communication unit through a wireless network.
The wireless communication unit is model TC 35.
Still include the bee calling organ that is connected with the singlechip.
Compared with the prior art, the utility model, following advantage and beneficial effect have: the temperature acquisition unit of the utility model can provide constant working current for the temperature sensor, so that the temperature sensor can work stably; and simultaneously, the utility model discloses a temperature acquisition unit can carry out temperature signal frequency very much, prevents that the signal from appearing undulant, improves the stability of signal.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a circuit structure diagram of the temperature acquisition unit of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Examples
As shown in fig. 1, the temperature monitoring system of the electrical equipment of the present invention comprises a single chip, a temperature acquisition unit, a display and a power supply, wherein the temperature acquisition unit, the display and the power supply are respectively connected with the single chip; the power supply is respectively connected with the single chip microcomputer, the temperature acquisition unit and the display. This power is the entire system power supply, and the temperature acquisition unit is used for gathering electrical equipment's operating temperature to give the singlechip with signal transmission, the singlechip then shows the temperature value through the display. The type of the single chip microcomputer is AT89S 52.
In order to better acquire the temperature signal of the electrical equipment, as shown in fig. 2, the temperature acquisition unit comprises a temperature sensor M, an amplifier P1, a triode VT1, a clamping and limiting circuit, a two-stage amplifying circuit, an RC filter circuit, a resistor R1, a resistor R2, a resistor R3, a resistor R4 and a voltage stabilizing diode D1. When the amplifier is specifically connected, the clamping amplitude limiting circuit is connected with a collector of the triode VT1, the two-stage amplifying circuit is connected with the clamping amplitude limiting circuit, the RC filter circuit is connected with the two-stage amplifying circuit, one end of the resistor R1 is connected with an anode of the amplifier P1, the other end of the resistor R1 is connected with a collector of the triode VT1, an N pole of the zener diode D1 is connected with an anode of the amplifier P1, a P pole of the zener diode D1 is connected with an emitter of the triode VT1 after passing through the resistor R4, one end of the resistor R2 is connected with a cathode of the amplifier P1, the other end of the resistor R3 is connected with an emitter of the triode VT1, one end of the resistor R3 is connected with a collector. The output end of the temperature sensor M is connected with the collector electrode of a triode VT1, and the base electrode of a triode VT1 is connected with the output end of an amplifier P1.
In the above structure, the transistor VT1, the amplifier P1, the zener diode D1, the resistor R2 and the resistor R4 together form a constant current source circuit, which can provide a constant working current for the whole temperature acquisition unit, so that the temperature sensor M can work more stably.
The clamping amplitude limiting circuit can limit the frequency of a monitoring signal, prevent the signal from fluctuating and improve the stability of the signal, and comprises a diode D3, a diode D2, a capacitor C1, a capacitor C3 and a capacitor C2, wherein the N pole of the diode D3 is connected with the P pole of a diode D3, the P pole of the diode D2 is connected with the collector of a triode VT1 after passing through a resistor R5, one end of the capacitor C1 is connected with the collector of a triode VT1, the other end of the capacitor C1 is connected with the N pole of a diode D3, one end of the capacitor C3 is connected with the N pole of a diode D3, the other end of the capacitor C3 is connected with the P pole of a diode D3 after passing through a resistor R7, and one end of the capacitor C; the P-pole of the diode D3 is also connected to a two-stage amplification circuit.
The two-stage amplifying circuit comprises a triode VT2, a triode VT3, a resistor R9 with one end connected with an emitter of the triode VT2 and the other end connected with a P electrode of a diode D3, a resistor R8 with one end connected with a collector of a triode VT2 and the other end connected with a base electrode of a triode VT2 after passing through a resistor R6, a capacitor C4 connected between the collector of a triode VT2 and the base electrode of a triode VT3 in series, and a capacitor C6 with one end connected with the emitter of the triode VT3 and the other end connected with a signal input interface of the singlechip; the base of the transistor VT2 is connected with the connection point of the capacitor C3 and the resistor R7, and the collector of the transistor VT3 is connected with the power supply. The monitoring signal is clearer after being amplified by the two-stage amplifying circuit.
The RC filter circuit can filter the interference signal in the monitoring signal, and includes a capacitor C5 having one end connected to the emitter of the transistor VT3 and the other end connected to the P-pole of the diode D3, and a resistor R10 connected in parallel to the capacitor C5.
When the temperature-limiting circuit works, the temperature sensor collects working temperature signals of electrical equipment, monitoring signals output by the temperature sensor are input to the clamping amplitude limiting circuit, and the frequency of the monitoring signals is limited by the diode D2 and the diode D3, so that the monitoring signals are prevented from fluctuating, and the stability of the monitoring signals is improved; the processed monitoring signal is output to a triode VT2 after passing through a capacitor C2 and a capacitor C3, and is amplified by a two-stage amplifier consisting of a triode VT2, a triode VT3, a capacitor C4 and a resistor R8 and then output to a single chip microcomputer, so that in the process, a filter consisting of a capacitor C5 and a resistor R10 filters interference signals in the monitoring signal. The single chip microcomputer processes the signals after receiving the signals and displays the temperature value through the display.
As another scheme, the device further comprises a buzzer, and the buzzer is connected with the single chip microcomputer. Under the condition, an upper limit value of the temperature is stored in the single chip microcomputer, and when the temperature is monitored to reach the upper limit value, the single chip microcomputer outputs a signal to the buzzer, and the buzzer gives an alarm.
As another scheme, the mobile terminal further comprises a wireless communication unit connected with the single chip microcomputer and a mobile terminal connected with the wireless communication unit through a wireless network. The singlechip sends the temperature value to the removal end through wireless communication unit, and monitoring personnel can know the behavior of electrical equipment through removing the end. The model of the wireless communication unit is TC35, and the mobile terminal can be a PC or a mobile phone.
As described above, the utility model discloses alright fine realization.
Claims (8)
1. A temperature monitoring system of electrical equipment is characterized by comprising a single chip microcomputer, a temperature acquisition unit, a display and a power supply, wherein the temperature acquisition unit, the display and the power supply are respectively connected with the single chip microcomputer; the power supply is respectively connected with the single chip microcomputer, the temperature acquisition unit and the display; the temperature acquisition unit comprises a temperature sensor M, an amplifier P1, a triode VT1, a clamping amplitude limiting circuit connected with a collector of a triode VT1, a two-stage amplifying circuit connected with the clamping amplitude limiting circuit, an RC filter circuit connected with the two-stage amplifying circuit, a resistor R1 with one end connected with the anode of the amplifier P1 and the other end connected with the collector of the triode VT1, a zener diode D1 with the N pole connected with the anode of the amplifier P1 and the P pole connected with the emitter of the triode VT1 after passing through a resistor R4, a resistor R2 with one end connected with the cathode of the amplifier P1 and the other end connected with the emitter of the triode VT1, and a resistor R3 with one end connected with the collector of the triode VT1 and the other end connected with a power supply; the output end of the temperature sensor M is connected with the collector electrode of a triode VT1, and the base electrode of a triode VT1 is connected with the output end of an amplifier P1.
2. The temperature monitoring system of an electric device as claimed in claim 1, wherein the clamping and limiting circuit comprises a diode D3, a diode D2 having an N-pole connected to the P-pole of the diode D3 and a P-pole connected to the collector of the transistor VT1 via a resistor R5, a capacitor C1 having one end connected to the collector of the transistor VT1 and the other end connected to the N-pole of the diode D3, a capacitor C3 having one end connected to the N-pole of the diode D3 and the other end connected to the P-pole of the diode D3 via a resistor R7, and a capacitor C2 having one end connected to the N-pole of the diode D3 and the other end connected to the connection point of the capacitor C3 and the resistor R7; the P-pole of the diode D3 is also connected to a two-stage amplification circuit.
3. The temperature monitoring system of an electric device as claimed in claim 2, wherein the two-stage amplifying circuit comprises a transistor VT2, a transistor VT3, a resistor R9 having one end connected to an emitter of the transistor VT2 and the other end connected to a P-pole of the diode D3, a resistor R8 having one end connected to a collector of the transistor VT2 and the other end connected to a base of the transistor VT2 via a resistor R6, a capacitor C4 connected in series between the collector of the transistor VT2 and the base of the transistor VT3, and a capacitor C6 having one end connected to the emitter of the transistor VT3 and the other end connected to the signal input interface of the single chip microcomputer; the base of the transistor VT2 is connected with the connection point of the capacitor C3 and the resistor R7, and the collector of the transistor VT3 is connected with the power supply.
4. The system of claim 3, wherein the RC filter circuit comprises a capacitor C5 connected to the emitter of the transistor VT3 and to the P-terminal of the diode D3, and a resistor R10 connected in parallel to the capacitor C5.
5. The temperature monitoring system of electrical equipment of claim 4, wherein the single chip microcomputer is of the type AT89S 52.
6. The temperature monitoring system of electrical equipment according to any one of claims 1 to 5, further comprising a wireless communication unit connected to the single chip microcomputer, and a mobile terminal connected to the wireless communication unit via a wireless network.
7. The system of claim 6, wherein the wireless communication unit is model TC 35.
8. The system according to claim 7, further comprising a buzzer connected to the single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020387082.0U CN211651890U (en) | 2020-03-24 | 2020-03-24 | Temperature monitoring system of electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020387082.0U CN211651890U (en) | 2020-03-24 | 2020-03-24 | Temperature monitoring system of electrical equipment |
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| Publication Number | Publication Date |
|---|---|
| CN211651890U true CN211651890U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020387082.0U Active CN211651890U (en) | 2020-03-24 | 2020-03-24 | Temperature monitoring system of electrical equipment |
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| CN (1) | CN211651890U (en) |
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2020
- 2020-03-24 CN CN202020387082.0U patent/CN211651890U/en active Active
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