CN217505945U - Multifunctional acquisition device - Google Patents
Multifunctional acquisition device Download PDFInfo
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- CN217505945U CN217505945U CN202123131006.7U CN202123131006U CN217505945U CN 217505945 U CN217505945 U CN 217505945U CN 202123131006 U CN202123131006 U CN 202123131006U CN 217505945 U CN217505945 U CN 217505945U
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Abstract
The utility model discloses a multi-functional collection system, include: the signal acquisition device, the signal shaping circuit, the voltage division circuit, the analog-to-digital converter, the Schmitt trigger, the MCU and the display are sequentially connected, and the signal amplification circuit is also connected with the bias voltage suppression circuit; the signal shaping circuit includes: the inverting input pin of the operational amplifier is connected with the input end of the signal shaping circuit through a first resistor, the non-inverting input pin of the operational amplifier is grounded through a second resistor, the control pin of the operational amplifier is grounded through a third resistor, the output pin of the operational amplifier is connected with the output end of the signal shaping circuit, the fourth resistor is connected between the output pin of the operational amplifier and the inverting input pin, the positive power supply pin of the operational amplifier is connected with the positive power supply end of the signal shaping circuit, and the negative power supply pin of the operational amplifier is connected with the negative power supply end of the signal shaping circuit. Adopt the utility model discloses, can take care of the signal, prevent the erroneous judgement to a certain extent.
Description
Technical Field
The utility model relates to a data acquisition field especially relates to a multi-functional collection system.
Background
Modern society is an information explosion society, and people can obtain extraordinary data from various media every day. The data acquisition device is suitable for all fields, most common signals acquired by various sensors and the like are tiny and unstable, the signals cannot be directly analyzed, and the direct analysis can cause analysis errors such as misjudgment. Therefore, the present invention provides a multifunctional collecting device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a multifunctional collecting device can take care of the signal, prevents the erroneous judgement to a certain extent.
Based on this, the utility model provides a multi-functional collection system, the device includes:
the signal acquisition device, the signal shaping circuit, the voltage division circuit, the analog-to-digital converter, the Schmitt trigger, the MCU and the display are sequentially connected, and the signal amplification circuit is also connected with the bias voltage suppression circuit;
the signal shaping circuit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor and an operational amplifier; the inverting input pin of the operational amplifier is connected with the input end of the signal shaping circuit through the first resistor, the non-inverting input pin of the operational amplifier is connected with the ground through the second resistor, the control pin of the operational amplifier is connected with the ground through the third resistor, the output pin of the operational amplifier is connected with the output end of the signal shaping circuit, the fourth resistor is connected between the output pin and the inverting input pin of the operational amplifier, the positive power supply pin of the operational amplifier is connected with the positive power supply end of the signal shaping circuit, and the negative power supply pin of the operational amplifier is connected with the negative power supply end of the signal shaping circuit.
The type of the operational amplifier is as follows: μ A766.
The bias voltage suppression circuit comprises an adjustable potentiometer, a fifth resistor, a sixth resistor and a seventh resistor; and a fixed wiring terminal 1 of the adjustable potentiometer is connected with a +2.5V reference voltage through the seventh resistor, a fixed wiring terminal 3 is connected with a-2.5V reference voltage through the sixth resistor, and a sliding terminal 2 is connected with the signal shaping circuit through the fifth resistor.
Wherein, the bleeder circuit includes: the signal shaping circuit comprises an eighth resistor and a ninth resistor, wherein the eighth resistor and the ninth resistor are connected in series, one end of the eighth resistor is connected with the output end of the signal shaping circuit, one end of the ninth resistor is connected with a ground signal, and a node formed by connecting the eighth resistor and the ninth resistor in series is connected with the input end of the analog-to-digital converter.
Wherein the Schmitt trigger comprises: the circuit comprises a first phase inverter, a second phase inverter, a tenth resistor and an eleventh resistor, wherein the tenth resistor, the first phase inverter and the second phase inverter are sequentially connected in series, two ends of the eleventh resistor are respectively connected with the input end of the first phase inverter and the output end of the second phase inverter, the idle end of the tenth resistor is used as the input end of the Schmitt trigger, and the output end of the second phase inverter is used as the output end of the Schmitt trigger.
Wherein the display comprises: a display screen is touched.
Wherein, the MCU includes: a PLC controller.
Adopt the utility model discloses, signal collector can be used to acquire the weak analog signal that the sensor sent and come, analog signal can be voltage signal, signal shaping circuit is used for right the signal is enlargied, bias voltage suppression circuit is used for generating a bias voltage suppression signal, in order to subdue the bias voltage that operational amplifier produced among the signal shaping circuit, bleeder circuit inputs certain voltage signal at its input, can obtain the voltage signal output of corresponding relation at the output. The signals are converted into digital signals through the analog-to-digital converter, the rising edges and the falling edges of the pulses become steeper through the Schmitt trigger, the shaping effect is achieved, interference on the digital signals can be eliminated, burr signals are eliminated, and the signals are more stable. And the MCU judges and analyzes the digital signals and then outputs the digital signals to the display for display.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 a multifunctional collecting device provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a signal shaping circuit provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a bias voltage suppression circuit provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of a schmitt trigger provided by an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Fig. 1 is a schematic view of the multi-functional collection device provided by the embodiment of the utility model, the device includes:
the circuit comprises a signal collector 101, a signal shaping circuit 102, a voltage division circuit 103, an analog-to-digital converter 104, a Schmitt trigger 105, an MCU106 and a display 108 which are connected in sequence, wherein the signal shaping circuit 102 is also connected with a bias voltage suppression circuit 107;
the signal collector can be a device for collecting voltage signals such as a temperature sensor, a humidity sensor and a pressure sensor.
Fig. 2 is a schematic diagram of a signal shaping circuit provided in an embodiment of the present invention, the signal shaping circuit includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and an operational amplifier; the inverting input pin of the operational amplifier is connected to the input terminal of the signal shaping circuit through the first resistor R1, the non-inverting input pin of the operational amplifier is connected to the ground through the second resistor R2, the control pin of the operational amplifier is connected to the ground through the third resistor R3, the output pin of the operational amplifier is connected to the output terminal of the signal shaping circuit, the fourth resistor R4 is connected between the output pin and the inverting input pin of the operational amplifier, the positive power supply pin of the operational amplifier is connected to the positive power supply terminal of the signal shaping circuit, and the negative power supply pin of the operational amplifier is connected to the negative power supply terminal of the signal shaping circuit.
The type of the operational amplifier is as follows: μ A766.
The signal shaping circuit functions to amplify a signal.
Fig. 3 is a schematic diagram of a bias voltage suppression circuit according to an embodiment of the present invention, the bias voltage suppression circuit includes an adjustable potentiometer WJ1, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7; the fixed connection terminal 1 of the adjustable potentiometer is connected with a reference voltage of +2.5V (or other amount of voltage) through the seventh resistor R7, the fixed connection terminal 3 is connected with a reference voltage of-2.5V (or other amount of voltage) through the sixth resistor R6, and the sliding terminal 2 is connected with the signal shaping circuit through the fifth resistor R5.
The fifth resistor of the bias voltage suppressing circuit may be connected to one end of the first resistor of the signal shaping circuit, i.e., the input terminal of the signal shaping circuit.
The voltage dividing circuit includes: the signal shaping circuit comprises an eighth resistor and a ninth resistor, wherein the eighth resistor and the ninth resistor are connected in series, one end of the eighth resistor is connected with the output end of the signal shaping circuit, one end of the ninth resistor is connected with a ground signal, and a node formed by connecting the eighth resistor and the ninth resistor in series is connected with the input end of the analog-to-digital converter.
Fig. 4 is a schematic diagram of a schmitt trigger provided by an embodiment of the present invention, which includes: the circuit comprises a first inverter U1, a second inverter U2, a tenth resistor R10 and an eleventh resistor R11, wherein the tenth resistor R10, the first inverter U1 and the second inverter U2 are sequentially connected in series, two ends of the eleventh resistor R11 are respectively connected with an input end of the first inverter U1 and an output end of the second inverter U2, an idle end of the tenth resistor R10 serves as an input end of a Schmitt trigger, and an output end of the second inverter U2 serves as an output end of the Schmitt trigger.
Wherein the display comprises: and (6) touching the display screen.
Wherein, the MCU includes: a PLC controller.
Adopt the utility model discloses, signal collector can be used to acquire the weak analog signal that the sensor sent and come, analog signal can be voltage signal, signal shaping circuit is used for right the signal is enlargied, bias voltage suppression circuit is used for generating a bias voltage suppression signal, in order to subdue the bias voltage that operational amplifier produced among the signal shaping circuit, bleeder circuit inputs certain voltage signal at its input, can obtain the voltage signal output of corresponding relation at the output. The signals are converted into digital signals through the analog-to-digital converter, the rising edges and the falling edges of the pulses become steeper through the Schmitt trigger, the shaping effect is achieved, interference on the digital signals can be eliminated, burr signals are eliminated, and the signals are more stable. And the MCU judges and analyzes the digital signal and then outputs the digital signal to the display for display.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. A multifunctional collection device, comprising:
the signal acquisition device, the signal shaping circuit, the voltage division circuit, the analog-to-digital converter, the Schmitt trigger, the MCU and the display are sequentially connected, and the signal amplification circuit is also connected with the bias voltage suppression circuit;
the signal shaping circuit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor and an operational amplifier; the inverting input pin of the operational amplifier is connected with the input end of the signal shaping circuit through the first resistor, the non-inverting input pin of the operational amplifier is connected with the ground through the second resistor, the control pin of the operational amplifier is connected with the ground through the third resistor, the output pin of the operational amplifier is connected with the output end of the signal shaping circuit, the fourth resistor is connected between the output pin and the inverting input pin of the operational amplifier, the positive power supply pin of the operational amplifier is connected with the positive power supply end of the signal shaping circuit, and the negative power supply pin of the operational amplifier is connected with the negative power supply end of the signal shaping circuit.
2. The multifunctional acquisition device as claimed in claim 1, wherein said operational amplifier is of the type: μ A766.
3. The multifunctional acquisition device of claim 1 wherein the bias voltage suppression circuit comprises an adjustable potentiometer, a fifth resistor, a sixth resistor, and a seventh resistor; and a fixed wiring terminal 1 of the adjustable potentiometer is connected with a +2.5V reference voltage through the seventh resistor, a fixed wiring terminal 3 is connected with a-2.5V reference voltage through the sixth resistor, and a sliding terminal 2 is connected with the signal shaping circuit through the fifth resistor.
4. The multi-functional collection device of claim 1, wherein the voltage divider circuit comprises: the signal shaping circuit comprises an eighth resistor and a ninth resistor, wherein the eighth resistor and the ninth resistor are connected in series, one end of the eighth resistor is connected with the output end of the signal shaping circuit, one end of the ninth resistor is connected with a ground signal, and a node formed by connecting the eighth resistor and the ninth resistor in series is connected with the input end of the analog-to-digital converter.
5. The multifunctional acquisition device of claim 1 wherein the Schmitt trigger comprises: the circuit comprises a first phase inverter, a second phase inverter, a tenth resistor and an eleventh resistor, wherein the tenth resistor, the first phase inverter and the second phase inverter are sequentially connected in series, two ends of the eleventh resistor are respectively connected with the input end of the first phase inverter and the output end of the second phase inverter, the idle end of the tenth resistor is used as the input end of the Schmitt trigger, and the output end of the second phase inverter is used as the output end of the Schmitt trigger.
6. The multi-functional collection device of claim 1, wherein the display comprises: a display screen is touched.
7. The multifunctional acquisition device of any one of claims 1 to 6 wherein the MCU comprises: a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123131006.7U CN217505945U (en) | 2021-12-14 | 2021-12-14 | Multifunctional acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123131006.7U CN217505945U (en) | 2021-12-14 | 2021-12-14 | Multifunctional acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217505945U true CN217505945U (en) | 2022-09-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123131006.7U Active CN217505945U (en) | 2021-12-14 | 2021-12-14 | Multifunctional acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217505945U (en) |
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2021
- 2021-12-14 CN CN202123131006.7U patent/CN217505945U/en active Active
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