CN210321828U - Low-cost mass sensor signal processing system - Google Patents
Low-cost mass sensor signal processing system Download PDFInfo
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- CN210321828U CN210321828U CN201921525339.8U CN201921525339U CN210321828U CN 210321828 U CN210321828 U CN 210321828U CN 201921525339 U CN201921525339 U CN 201921525339U CN 210321828 U CN210321828 U CN 210321828U
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Abstract
The utility model belongs to the technical field of signal processing, in particular to a low-cost mass sensor signal processing system, which comprises a plurality of sensors, a data selection module, a filtering module, a conversion module and a microprocessor; the output ends of the sensors are respectively electrically connected with the input ends of the data selection module, the control end of the microprocessor is electrically connected with the controlled end of the data selection module, the output end of the data selection module is electrically connected with the input end of the filtering module, the output end of the filtering module is electrically connected with the input end of the conversion module, the output end of the conversion module is electrically connected with the input end of the microprocessor, and the control end of the microprocessor is electrically connected with the controlled end of the conversion module. The utility model discloses compare in traditional distributed signal processing system, this embodiment simple structure, the electron device that needs still less, and the cost is lower.
Description
Technical Field
The utility model belongs to the technical field of signal processing, concretely relates to low-cost mass sensor signal processing system.
Background
For a distributed signal processing system, data information of different nodes of the surrounding environment is collected through multiple sets of sensors. For example, a plurality of sensors respectively collect signals of ambient temperature, humidity, light intensity and the like, the collected signals are respectively filtered by a plurality of filters and subjected to analog-to-digital conversion by an analog-to-digital converter, and then a plurality of converted data information are sent to the MCU for signal processing. A schematic diagram of a conventional distributed signal processing system is shown in fig. 1.
For a distributed signal processing system, a large number of sensors are provided, each sensor uses a separate filter and an ADC module, so that a lot of resources are consumed, and the system cost is high.
SUMMERY OF THE UTILITY MODEL
The not enough of problem more than, the utility model provides a low-cost mass sensor signal processing system compares in traditional distributed signal processing system, and this embodiment simple structure, the electron device that needs still less, and the cost is lower.
The utility model provides a low-cost mass sensor signal processing system, which comprises a plurality of sensors, a data selection module, a filtering module, a conversion module and a microprocessor;
the output ends of the sensors are respectively electrically connected with the input ends of the data selection module, the control end of the microprocessor is electrically connected with the controlled end of the data selection module, the output end of the data selection module is electrically connected with the input end of the filtering module, the output end of the filtering module is electrically connected with the input end of the conversion module, the output end of the conversion module is electrically connected with the input end of the microprocessor, and the control end of the microprocessor is electrically connected with the controlled end of the conversion module.
Preferably, the sensors include, but are not limited to, temperature sensors, light sensitive sensors, visual sensors, infrared sensors, speed sensors, position sensors, ultrasonic sensors, and pressure sensors.
Preferably, the data selection module comprises a data selector;
the output ends of the sensors are respectively connected with the data input ends of the data selector;
the enable control end of the microprocessor is connected with the enable controlled end of the data selector, and the two address control ends of the microprocessor are respectively connected with the two address controlled ends of the data selector.
Preferably, the data selector is of model 74153 or 74LS 153.
Preferably, the filtering module comprises an operational amplifier OP;
the output end of the data selector is connected with the positive input end of an operational amplifier OP through a resistor R1 and a resistor R2 which are sequentially connected in series, the common end of the resistor R1 and the resistor R2 is grounded through a capacitor C1, the positive input end of the operational amplifier OP is grounded through a capacitor C2, the negative input end of the operational amplifier OP is grounded through a resistor R3, and the negative input end of the operational amplifier OP is connected with the output end of the operational amplifier OP through a resistor R4.
Preferably, the conversion module comprises an analog-to-digital converter;
the output end of the operational amplifier OP is connected with the analog input end of the analog-to-digital converter, and the digital output end of the analog-to-digital converter is connected with the digital input end of the microprocessor;
the three address control ends of the microprocessor are respectively connected with three address input ends of the analog-to-digital converter, the CLK control end of the microprocessor is connected with the CLK controlled end of the analog-to-digital converter, the OE control end of the microprocessor is connected with the OE controlled end of the analog-to-digital converter, the EOC control end of the microprocessor is connected with the EOC controlled end of the analog-to-digital converter, and the common control end of the microprocessor is connected with the ALE controlled end and the START controlled end of the analog-to-digital converter.
Preferably, the analog-to-digital converter is of the type ADC 0809.
Preferably, the microprocessor is of the type STM32F103 or AT89C 51.
According to the above technical scheme, the utility model discloses compare in traditional distributed signal processing system, this embodiment simple structure, the electron device that needs still less, the cost is lower.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the detailed description or the prior art description will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a distributed signal processing system according to the background art;
FIG. 2 is a schematic diagram of a low-cost mass sensor signal processing system according to the present embodiment;
FIG. 3 is a circuit diagram of a data selection module according to the present embodiment;
FIG. 4 is a detailed circuit diagram of the data selection module in the present embodiment;
FIG. 5 is a circuit diagram of a filter module according to the present embodiment;
fig. 6 is a circuit configuration diagram of the conversion module in the present embodiment.
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 some, not all, of the 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 work belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Example (b):
the embodiment provides a low-cost mass sensor signal processing system, as shown in fig. 2, which includes a plurality of sensors, a data selection module, a filtering module, a conversion module and a microprocessor;
the output ends of the sensors are respectively electrically connected with the input ends of the data selection module, the control end of the microprocessor is electrically connected with the controlled end of the data selection module, the output end of the data selection module is electrically connected with the input end of the filtering module, the output end of the filtering module is electrically connected with the input end of the conversion module, the output end of the conversion module is electrically connected with the input end of the microprocessor, and the control end of the microprocessor is electrically connected with the controlled end of the conversion module.
The sensors in this embodiment include, but are not limited to, temperature sensors, light sensitive sensors, vision sensors, infrared sensors, speed sensors, position sensors, ultrasonic sensors, and pressure sensors. As many sensors in the system can generate a corresponding number of phase clocks, which are controlled by the microprocessor. Each sensor collects corresponding sensor data, the data selection module can gate the sensor data entering the filtering module in a time-sharing mode, the filtered sensor data are subjected to analog-to-digital conversion through the conversion module, and finally the data are sent to the microprocessor for processing. In the embodiment, only one filtering module and one conversion module are needed for a plurality of sensor data; compared with the traditional system, the distributed signal processing system has the advantages that each sensor data needs one filter and one data converter, so that the distributed signal processing system is simple in structure, needs fewer electronic devices and is lower in cost.
The data selection module of this embodiment includes a data selector, and the model of the data selector is 74153 or 74LS153 or others. In the present embodiment, a four-sensor and one-out-of-four data selector U1 is used for illustration, and as shown in fig. 3 and 4, the output terminals of the four sensors are respectively connected to the four data input terminals (pin D0, pin D1, pin D2 and pin D3) of the data selector U1; an enable control terminal (pin P2.0) of the microprocessor U3 is connected with an enable controlled terminal (pin S) of the data selector U1, and two address control terminals (pin P2.1 and pin P2.2) of the microprocessor U3 are respectively connected with two address controlled terminals (pin A1 and pin A0) of the data selector U1.
In this embodiment, after the data selector U1 selects data of one of the four sensors, the data is transmitted to the filtering module for filtering.
The filtering module of this embodiment includes an operational amplifier OP; as shown in fig. 5, the output terminal (Y pin) of the data selector U1 is connected to the positive (+) input terminal of the operational amplifier OP through a resistor R1 and a resistor R2 connected in series in sequence, the common terminal of the resistor R1 and the resistor R2 is grounded through a capacitor C1, the positive (+) input terminal of the operational amplifier OP is grounded through a capacitor C2, the negative (-) input terminal of the operational amplifier OP is grounded through a resistor R3, and the negative (-) input terminal of the operational amplifier OP is connected to the output terminal of the operational amplifier OP through a resistor R4.
And the sensor data filtered by the operational amplifier OP is sent to an analog-to-digital conversion module.
The conversion module of this embodiment includes an analog-to-digital converter, the analog-to-digital converter U2 is of a type of ADC0809 or others, and the microprocessor U3 of this embodiment is of a type of STM32F103 or AT89C51 or others.
As shown IN fig. 6, the output terminal of the operational amplifier OP is connected to the analog input terminal (IN1 pin) of the analog-to-digital converter U2, and the eight digital output terminals (D0-D7 pins) of the analog-to-digital converter U2 are correspondingly connected to the eight digital input terminals (P3.0-P3.7 pins) of the microprocessor U3, respectively;
the three address control terminals (pins P1.0-P1.2) of the microprocessor U3 are respectively connected with three address input terminals (ADDA-ADDC pins) of an analog-to-digital converter U2, the CLK control terminal (pin P1.7) of the microprocessor U3 is connected with the CLK controlled terminal of the analog-to-digital converter U2, the OE control terminal (pin P1.4) of the microprocessor U3 is connected with the OE controlled terminal of the analog-to-digital converter U2, the EOC control terminal (pin P1.5) of the microprocessor U3 is connected with the EOC controlled terminal of the analog-to-digital converter U2, and the common control terminal (pin P1.6) of the microprocessor U3 is connected with the ALE controlled terminal and the START controlled terminal of the analog-to-digital converter U2.
In this embodiment, the analog-to-digital converter performs analog-to-digital conversion on the filtered sensor data, and sends the converted data to the microprocessor for processing.
In summary, the plurality of sensors of this embodiment share one data selector, one filtering module, and one analog-to-digital converter, the data selector gates the sensor data entering the filtering module in a time-sharing manner, and the filtered sensor data is converted by the analog-to-digital converter and then sent to the microprocessor. In the conventional distributed signal processing system, one filter and one data converter are required for each sensor, so that the embodiment has a simple structure, needs fewer electronic devices and is lower in cost compared with the conventional system.
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; and such modifications and substitutions are intended to be included within the scope of the claims and the specification.
Claims (8)
1. A low-cost mass sensor signal processing system is characterized by comprising a plurality of sensors, a data selection module, a filtering module, a conversion module and a microprocessor;
the output ends of the sensors are respectively electrically connected with the input ends of the data selection module, the control end of the microprocessor is electrically connected with the controlled end of the data selection module, the output end of the data selection module is electrically connected with the input end of the filtering module, the output end of the filtering module is electrically connected with the input end of the conversion module, the output end of the conversion module is electrically connected with the input end of the microprocessor, and the control end of the microprocessor is electrically connected with the controlled end of the conversion module.
2. A low cost mass sensor signal processing system as claimed in claim 1 wherein said sensors include but are not limited to temperature sensors, light sensitive sensors, visual sensors, infrared sensors, speed sensors, position sensors, ultrasonic sensors and pressure sensors.
3. A low cost mass sensor signal processing system as claimed in claim 1, wherein said data selection module comprises a data selector;
the output ends of the sensors are respectively connected with the data input ends of the data selector;
the enable control end of the microprocessor is connected with the enable controlled end of the data selector, and the two address control ends of the microprocessor are respectively connected with the two address controlled ends of the data selector.
4. A low cost mass sensor signal processing system as claimed in claim 3, wherein said data selector is model 74153 or 74LS 153.
5. A low cost mass sensor signal processing system as in claim 3 wherein said filtering module comprises an operational amplifier OP;
the output end of the data selector is connected with the positive input end of an operational amplifier OP through a resistor R1 and a resistor R2 which are sequentially connected in series, the common end of the resistor R1 and the resistor R2 is grounded through a capacitor C1, the positive input end of the operational amplifier OP is grounded through a capacitor C2, the negative input end of the operational amplifier OP is grounded through a resistor R3, and the negative input end of the operational amplifier OP is connected with the output end of the operational amplifier OP through a resistor R4.
6. A low cost mass sensor signal processing system as in claim 5, wherein said conversion module comprises an analog to digital converter;
the output end of the operational amplifier OP is connected with the analog input end of the analog-to-digital converter, and the digital output end of the analog-to-digital converter is connected with the digital input end of the microprocessor;
the three address control ends of the microprocessor are respectively connected with three address input ends of the analog-to-digital converter, the CLK control end of the microprocessor is connected with the CLK controlled end of the analog-to-digital converter, the OE control end of the microprocessor is connected with the OE controlled end of the analog-to-digital converter, the EOC control end of the microprocessor is connected with the EOC controlled end of the analog-to-digital converter, and the common control end of the microprocessor is connected with the ALE controlled end and the START controlled end of the analog-to-digital converter.
7. A low cost mass sensor signal processing system as claimed in claim 6, wherein said analog to digital converter is model ADC 0809.
8. A low cost mass sensor signal processing system as claimed in claim 1, wherein said microprocessor is of the type STM32F103 or AT89C 51.
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| CN201921525339.8U CN210321828U (en) | 2019-09-11 | 2019-09-11 | Low-cost mass sensor signal processing system |
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| CN201921525339.8U CN210321828U (en) | 2019-09-11 | 2019-09-11 | Low-cost mass sensor signal processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184068A1 (en) * | 2022-03-28 | 2023-10-05 | 京东方科技集团股份有限公司 | Pupil information acquisition circuit and method and display apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184068A1 (en) * | 2022-03-28 | 2023-10-05 | 京东方科技集团股份有限公司 | Pupil information acquisition circuit and method and display apparatus |
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