CN216895000U - Three-parameter combined transmitter - Google Patents
Three-parameter combined transmitter Download PDFInfo
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- CN216895000U CN216895000U CN202220095154.3U CN202220095154U CN216895000U CN 216895000 U CN216895000 U CN 216895000U CN 202220095154 U CN202220095154 U CN 202220095154U CN 216895000 U CN216895000 U CN 216895000U
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Abstract
The utility model discloses a three-parameter combined transmitter, which comprises a vibration sensor, a temperature sensor, a liquid level sensor, a signal acquisition circuit, a signal processing circuit, a CPU processing circuit, a voltage-current conversion circuit, an HART communication circuit and a signal superposition circuit.
Description
Technical Field
The utility model relates to the field of transmitters, in particular to a three-parameter combined transmitter.
Background
The transmitter signal of the existing product is single, 2-3 transmitters are needed to be simultaneously installed and measured for the same monitored equipment, so that the field installation is inconvenient, the occupied space is large, the installation position is inconvenient to select, and the appearance is attractive. The problem of mutual interference between the parameters of three channels can not be solved by the conventional three-parameter combined transmitter, three signals are monitored in the same shell, the three signals are limited by the volume, and the three signals can not be well isolated, so that the inaccuracy of test output or fluctuation is caused.
Disclosure of Invention
The utility model provides a three-parameter combined transmitter, which aims to overcome the technical problem of stability of output signals.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a three parameter combination transmitter, comprising: the device comprises a vibration sensor, a temperature sensor, a liquid level sensor, a signal acquisition circuit, a signal processing circuit, a CPU processing circuit, a voltage-current conversion circuit, an HART communication circuit and a signal superposition circuit;
the output end of the vibration sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the vibration speed value of the reduction gearbox of the fan;
the output end of the temperature sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the temperature value of the reduction gearbox of the fan;
the output end of the liquid level sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the oil level value of the reduction gearbox of the fan;
the output end of the signal acquisition circuit is connected with the input end of the signal processing circuit and is used for respectively converting a vibration speed value of the fan reduction box, a temperature value of the fan reduction box and an oil level value of the fan reduction box into a first voltage signal, a second voltage signal and a third voltage signal;
the output end of the signal processing circuit is connected with the CPU processing circuit and is used for carrying out filtering amplification integration, effective value conversion, low-pass filtering and impedance conversion on the first voltage signal, the second voltage signal and the third voltage signal to form a fourth voltage signal and transmitting the fourth voltage signal to the CPU processing circuit;
the CPU processing circuit sequentially performs analog-to-digital conversion, filtering processing and digital-to-analog conversion on the fourth voltage signal to remove redundant signals to form a fifth voltage signal, and the fifth voltage signal is used for controlling the voltage-current conversion circuit and the HART communication circuit;
the signal superposition circuit superposes the fifth voltage signal and the alternating current signal output by the HART circuit and outputs the superposed signal to the voltage-current conversion circuit;
the voltage-current conversion circuit converts the fifth voltage signal and the alternating current signal into a current signal, and superposes the current signal on a power supply for output;
the HART communication circuit converts the current signal into an alternating current signal through the FSK signal and transmits the alternating current signal to the HART hand operator.
Further, the signal processing circuit comprises a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, an inductor L1, a fuse FU, a first voltage regulator tube D1, a second voltage regulator tube D2 and a PWR-DVDD chip; after being connected in parallel with a second capacitor C2, a first capacitor C1 and a second capacitor C2 are connected at the two ends and are respectively connected with a first resistor R1 and a second resistor R2, a first resistor R1 is connected with a pin of a PWR-DVDD chip 8, a second resistor R2 is connected with one end of a third capacitor C3 and one end of a third resistor R3, a pin of the PWR-DVDD chip 1 is connected with the first resistor R1 and the second resistor R2, a pin of the PWR-DVDD chip 5 is connected with the other end of the third capacitor C3, a pin of the PWR-DVDD chip 7 is connected with an inductor L1, a pin of the PWR-DVDD chip 4 is connected with a fourth resistor R4, a fifth resistor R5 and a fourth capacitor C4, a pin of the PWR-DVDD chip 6 and a pin 9 are connected with a fifth resistor R5, a fifth capacitor C5 and a sixth capacitor C6, the first voltage regulator tube D1, the second voltage regulator tube D2 and the seventh capacitor C7 are connected in parallel and then connected with one end of a fourth capacitor C4, a pin 6 and a pin 9 of a PWR-DVDD chip, and a fuse FU is arranged between the sixth capacitor C6 and the first voltage regulator tube D1.
Furthermore, the protection circuit also comprises an anti-surge protection circuit, wherein the input end of the anti-surge protection circuit is connected with the output end of the signal acquisition circuit, and the output end of the anti-surge protection circuit is connected with the input end of the signal processing circuit and used for preventing the signal processing circuit from being damaged by the overlarge surge current of the signal acquisition circuit.
Further, the current value of the current signal is 4-20 mA.
The input end of the alarm unit is connected with the output end of the voltage-current conversion circuit and used for alarming when the output current of the voltage-current conversion circuit exceeds a preset value.
Has the advantages that: the utility model integrates the vibration sensor, the temperature sensor, the liquid level sensor and the signal processing circuit into a whole, can provide corresponding information for measuring the vibration speed value, the temperature value and the oil level value of the air box, adds a PWR-DVDD chip to increase the stability and the anti-interference performance of signals, ensures the accuracy of measurement, and ensures that the three-parameter combination transmitter has high integration level, small volume, light weight, easy installation and high stability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic diagram of a signal processing 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. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The embodiment provides a three-parameter combination transmitter, as shown in fig. 1, including: the device comprises a vibration sensor, a temperature sensor, a liquid level sensor, a signal acquisition circuit, a signal processing circuit, a CPU processing circuit, a voltage-current conversion circuit, an HART communication circuit and a signal superposition circuit;
the output end of the vibration sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the vibration speed value of the reduction gearbox of the fan;
the output end of the temperature sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the temperature value of the reduction gearbox of the fan;
the output end of the liquid level sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the oil level value of the reduction gearbox of the fan;
the output end of the signal acquisition circuit is connected with the input end of the signal processing circuit and is used for respectively converting a vibration speed value of the fan reduction box, a temperature value of the fan reduction box and an oil level value of the fan reduction box into a first voltage signal, a second voltage signal and a third voltage signal;
the output end of the signal processing circuit is connected with the CPU processing circuit and is used for carrying out filtering amplification integration, effective value conversion, low-pass filtering and impedance conversion on the first voltage signal, the second voltage signal and the third voltage signal to form a fourth voltage signal and transmitting the fourth voltage signal to the CPU processing circuit;
the CPU processing circuit sequentially performs analog-to-digital conversion, filtering processing and digital-to-analog conversion on the fourth voltage signal to remove redundant signals to form a fifth voltage signal, and the fifth voltage signal is used for controlling the voltage-current conversion circuit and the HART communication circuit;
the signal superposition circuit superposes the fifth voltage signal and the alternating current signal output by the HART circuit and outputs the superposed signal to the voltage-current conversion circuit;
the voltage-current conversion circuit converts the fifth voltage signal and the alternating current signal into a current signal, and superposes the current signal on a power supply for output;
the HART communication circuit converts the current signal into an alternating current signal through the FSK signal and transmits the alternating current signal to the HART hand operator.
The vibration sensor, the temperature sensor, the liquid level sensor and the signal processing circuit are integrated into a whole, corresponding information can be provided for measuring the vibration speed value, the temperature value and the oil level value of the air box, and meanwhile, the signal processing circuit is arranged to increase the stability, so that the three-parameter combination transmitter is high in integration level, small in size, light in weight, easy to install and high in stability.
In a specific embodiment, as shown in fig. 2, the signal processing circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, an inductor L1, a fuse FU, a first voltage regulator D1, a second voltage regulator D2, and a PWR-DVDD chip; after being connected in parallel with a second capacitor C2, a first capacitor C1 and a second capacitor C2 are connected at the two ends and are respectively connected with a first resistor R1 and a second resistor R2, a first resistor R1 is connected with a pin of a PWR-DVDD chip 8, a second resistor R2 is connected with one end of a third capacitor C3 and one end of a third resistor R3, a pin of the PWR-DVDD chip 1 is connected with the first resistor R1 and the second resistor R2, a pin of the PWR-DVDD chip 5 is connected with the other end of the third capacitor C3, a pin of the PWR-DVDD chip 7 is connected with an inductor L1, a pin of the PWR-DVDD chip 4 is connected with a fourth resistor R4, a fifth resistor R5 and a fourth capacitor C4, a pin of the PWR-DVDD chip 6 and a pin 9 are connected with a fifth resistor R5, a fifth capacitor C5 and a sixth capacitor C6, the first voltage regulator tube D1, the second voltage regulator tube D2 and the seventh capacitor C7 are connected in parallel and then connected with one end of a fourth capacitor C4, a pin 6 and a pin 9 of a PWR-DVDD chip, and a fuse FU is arranged between the sixth capacitor C6 and the first voltage regulator tube D1.
In a specific embodiment, the system further comprises an anti-surge protection circuit, wherein an input end of the anti-surge protection circuit is connected with an output end of the signal acquisition circuit, and an output end of the anti-surge protection circuit is connected with an input end of the signal processing circuit and used for preventing an excessive surge current of the signal acquisition circuit from damaging the signal processing circuit.
In a specific embodiment, the current value of the current signal is 4-20 mA.
In a specific embodiment, the power supply further comprises an alarm unit, wherein the input end of the alarm unit is connected with the output end of the voltage-current conversion circuit and used for alarming when the output current of the voltage-current conversion circuit exceeds a preset value.
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 (5)
1. A three parameter combination transmitter, comprising: the device comprises a vibration sensor, a temperature sensor, a liquid level sensor, a signal acquisition circuit, a signal processing circuit, a CPU processing circuit, a voltage-current conversion circuit, an HART communication circuit and a signal superposition circuit;
the output end of the vibration sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the vibration speed value of the reduction gearbox of the fan;
the output end of the temperature sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the temperature value of the reduction gearbox of the fan;
the output end of the liquid level sensor is connected with the input end of the signal acquisition circuit and is used for acquiring the oil level value of the reduction gearbox of the fan;
the output end of the signal acquisition circuit is connected with the input end of the signal processing circuit and is used for respectively converting a vibration speed value of the fan reduction box, a temperature value of the fan reduction box and an oil level value of the fan reduction box into a first voltage signal, a second voltage signal and a third voltage signal;
the output end of the signal processing circuit is connected with the CPU processing circuit and is used for carrying out filtering amplification integration, effective value conversion, low-pass filtering and impedance conversion on the first voltage signal, the second voltage signal and the third voltage signal to form a fourth voltage signal and transmitting the fourth voltage signal to the CPU processing circuit;
the CPU processing circuit sequentially performs analog-to-digital conversion, filtering processing and digital-to-analog conversion on the fourth voltage signal to remove redundant signals to form a fifth voltage signal, and the fifth voltage signal is used for controlling the voltage-current conversion circuit and the HART communication circuit;
the signal superposition circuit superposes the fifth voltage signal and the alternating current signal output by the HART circuit and outputs the superposed signal to the voltage-current conversion circuit;
the voltage-current conversion circuit converts the fifth voltage signal and the alternating current signal into a current signal, and superposes the current signal on a power supply for output;
the HART communication circuit converts the current signal into an alternating current signal through the FSK signal and transmits the alternating current signal to the HART hand-held device.
2. A three parameter combination transmitter as defined in claim 1, wherein: the signal processing circuit comprises a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, an inductor L1, a fuse FU, a first voltage regulator tube D1, a second voltage regulator tube D2 and a PWR-DVDD chip; after being connected in parallel with a second capacitor C2, a first capacitor C1 and a second capacitor C2 are connected at the two ends and are respectively connected with a first resistor R1 and a second resistor R2, a first resistor R1 is connected with a pin of a PWR-DVDD chip 8, a second resistor R2 is connected with one end of a third capacitor C3 and one end of a third resistor R3, a pin of the PWR-DVDD chip 1 is connected with the first resistor R1 and the second resistor R2, a pin of the PWR-DVDD chip 5 is connected with the other end of the third capacitor C3, a pin of the PWR-DVDD chip 7 is connected with an inductor L1, a pin of the PWR-DVDD chip 4 is connected with a fourth resistor R4, a fifth resistor R5 and a fourth capacitor C4, a pin of the PWR-DVDD chip 6 and a pin 9 are connected with a fifth resistor R5, a fifth capacitor C5 and a sixth capacitor C6, the first voltage regulator tube D1, the second voltage regulator tube D2 and the seventh capacitor C7 are connected in parallel and then connected with one end of a fourth capacitor C4, a pin 6 and a pin 9 of a PWR-DVDD chip, and a fuse FU is arranged between the sixth capacitor C6 and the first voltage regulator tube D1.
3. A three parameter combination transmitter as defined in claim 1, wherein: the surge protection circuit is characterized by further comprising a surge protection circuit, wherein the input end of the surge protection circuit is connected with the output end of the signal acquisition circuit, and the output end of the surge protection circuit is connected with the input end of the signal processing circuit and used for preventing the signal processing circuit from being damaged by too large surge current of the signal acquisition circuit.
4. A three parameter combination transmitter as defined in claim 1, wherein: the current value of the current signal is 4-20 mA.
5. A three parameter combination transmitter as defined in claim 1, wherein: the input end of the alarm unit is connected with the output end of the voltage-current conversion circuit and used for alarming when the output current of the voltage-current conversion circuit exceeds a preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220095154.3U CN216895000U (en) | 2022-01-14 | 2022-01-14 | Three-parameter combined transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220095154.3U CN216895000U (en) | 2022-01-14 | 2022-01-14 | Three-parameter combined transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN216895000U true CN216895000U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220095154.3U Active CN216895000U (en) | 2022-01-14 | 2022-01-14 | Three-parameter combined transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN216895000U (en) |
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- 2022-01-14 CN CN202220095154.3U patent/CN216895000U/en active Active
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