KR20120126813A - Mixed-signal measurement and signal conversion device. - Google Patents

Abstract

PURPOSE: A mix signal measuring and signal converting device is provided to output several kinds of sensor signals for enhancing the availability of expensive equipment by receiving the signals and respectively converting the same and to measure various signals from a current sensor, a temperature sensor, and a pressure sensor. CONSTITUTION: A mix signal measuring and signal converting device comprises a plurality of sensors(300), a mix signal measuring and converting member(100), and a measurement unit(200). The sensors sense a measurement object. The mix signal measuring and converting member performs analog-filtering and digital-filtering processes of the signals being input by the sensors, thereby transmitting the filtered signals to the measurement unit or an external terminal. The measurement unit outputs the signals transmitted from the mix signal measuring and converting member. [Reference numerals] (110) Signal outputting unit; (120) Digital filter signal output unit; (130) Digital signal output unit; (140) Central controlling member; (150) Signal converting member; (160) Data memory; (200) Measurement unit; (250) External communication; (300) Sensor

Description

Mixed-signal measurement and signal conversion device

The present invention relates to a mixed signal measurement and signal conversion device, and more particularly, a mixed signal that can be simultaneously measured and analyzed with respect to a plurality of mixed input signals, which can be quickly confirmed in the field, unlike conventional measurement analysis methods. A measurement and signal converter.

Various measuring instruments are used in places where electricity or mechanical devices are used, such as laboratories and various industrial sites.

For example, an AC or direct current ammeter as an instrument for measuring an electric current, an AC or DC voltmeter, a thermometer, a frequency meter, a pressure meter, a hygrometer, a flow meter, etc. as an instrument for measuring a voltage is such an example.

As such, there are various kinds of measuring devices and various kinds of mechanical devices depending on the object to be measured. To manufacture such measuring devices, it is necessary to develop separate circuits and to assemble components individually, so that the working time and There is a problem that development costs are high.

In addition, in the case of a multi-function electric device, a low-cost device, a multi-tester, which is an electronic measuring instrument that measures various data such as voltage, current, and electrical resistance, is commonly used. Sometimes expensive dedicated measurement equipment is used.

However, when the multi-tester is used, the measured value is simply displayed as a number, so there is a lack in analysis of the form and characteristics of electricity. On the contrary, when the expensive dedicated measuring equipment is used, the equipment itself is expensive, In many cases, specialized knowledge is required for measurement and analysis.

In addition, in the research and development or experiment of electrical circuits or electronic circuits, measurement equipment such as oscilloscopes, such as voltage and frequency measurement equipment, is an essential equipment.

However, due to the nature of the equipment, the input is limited to the voltage, which is very inconvenient to use in the application of expensive equipment.

In addition, the common measuring instruments currently in use often measure one kind of signal at a time or measure the same signal (voltage, temperature, etc.) many times.The measuring instrument for measuring environmental factors is mixed with temperature, humidity, etc. In some cases, a signal is measured, and a device that receives and measures a plurality of the same signals (voltages) among the measuring devices is mostly expensive equipment, and measures only voltage, and thus has been falling in terms of utilization of equipment.

Therefore, if you use a device that can receive and convert mixed signals to increase the utilization of such expensive equipment, increase the utilization of equipment that can only measure voltage and frequency by measuring the existing voltage voltage, current, temperature, pressure By being able to measure signals such as, it can be said that the application range is greatly expanded.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the present invention is to receive a variety of types of sensor signals at the same time to convert and output each, simultaneously to increase the utilization of expensive equipment, at the same time only voltage and frequency In addition, the purpose of the present invention is to increase the utilization of the equipment by measuring a variety of signals from the current sensor, temperature sensor, pressure sensor, etc., and to improve the efficiency of the analysis of the measured data.

According to the present invention, a signal output unit is configured to directly output an analog signal, so that components such as noise output from a sensor can be measured. A digital filter signal output unit is configured to apply a filter to an analog signal, thereby applying noise or specific signals. The other purpose is to remove the noise on the frequency component and measure it, and to configure the digital signal output unit so that the measured signal can be checked in the external terminal.

Mixed signal measurement and signal conversion apparatus according to an embodiment of the present invention in order to achieve the above object,

A plurality of sensors 300 for sensing a measurement object;

A mixed signal measuring and converting means (100) for analog filtering and digital filtering of the signal input from the sensor to send the filtered signal to the measuring instrument or to an external terminal;

It is configured to include a; measuring device 200 for outputting a signal transmitted from the mixed signal measuring and converting means, to solve the purpose,

At this time, the mixed signal measurement and conversion means 100,

A primary amplifier 151 for amplifying the analog signal input from the sensor,

An analog filter 152 for analog filtering the amplified analog signal,

A digital filter 153 for digitally filtering the amplified analog signal,

A second amplifier 154 for amplifying the signal digitally filtered by the digital filter;

A plurality of signal conversion units 150 including a sensor information storage unit 155 for storing information input from a sensor, range of input signals, and setting value information for the items;

A signal output unit 110 for outputting an analog filtered signal by the analog filter of the signal conversion unit;

A digital filter signal output unit 120 for outputting a digital filtering signal amplified by the secondary amplifier of the signal converter;

A digital signal output unit 130 for outputting a digital filtering signal processed by the digital filter of the signal conversion unit;

A central control unit (140) for controlling the signal processed by the signal converting unit and acquiring sensor information and outputting the sensor information to the measuring device with respect to the measurement object and range of each sensor;

And a data storage unit 160 for storing the data set by the measuring device and the data processed by the central control means.

As described above, the mixed signal measurement and signal conversion apparatus according to the present invention, in order to increase the utilization of expensive equipment, simultaneously receives various types of sensor signals and converts and outputs each, at the same time not only voltage and frequency, but also current sensors It is possible to measure various signals from temperature sensor, pressure sensor, etc., thereby increasing the utilization of equipment and providing better effect to increase efficiency of analysis of measured data.

In addition, the signal output unit is configured to directly output the analog processed signal, so it is possible to measure components such as noise output from the sensor, and the digital filter signal output unit is configured to apply a filter to the analog signal so that noise or a specific frequency component can be measured. The noise can be measured by removing the noise, and the digital signal output unit provides a better effect of checking the measured signal at an external terminal.

1 is an overall configuration diagram of a mixed signal measurement and signal conversion apparatus according to an embodiment of the present invention.
2 is a block diagram of a signal conversion unit of the mixed signal measurement and signal conversion device according to an embodiment of the present invention.
Figure 3 is a block diagram of the central control means of the mixed signal measurement and signal conversion apparatus according to an embodiment of the present invention.
4 is an exemplary view showing an example in which measured data is displayed on a measuring device of a mixed signal measuring and signal converting apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings, but the scope of the present invention is not limited to this embodiment, and all equivalent inventions at the level of ordinary skill in the art belong to the scope of the present invention. Self-explanatory

The mixed signal measurement and signal conversion apparatus of the present invention,

In mixed signal measurement and signal conversion apparatus,

A plurality of sensors 300 for sensing a measurement object;

A mixed signal measuring and converting means (100) for analog filtering and digital filtering of the signal input from the sensor to send the filtered signal to the measuring instrument or to an external terminal;

Characterized in that it comprises a; measuring device 200 for outputting a signal transmitted from the mixed signal measurement and conversion means.

At this time, the mixed signal measurement and conversion means 100,

A primary amplifier 151 for amplifying the analog signal input from the sensor,

An analog filter 152 for analog filtering the amplified analog signal,

A digital filter 153 for digitally filtering the amplified analog signal,

A second amplifier 154 for amplifying the signal digitally filtered by the digital filter;

A plurality of signal conversion units 150 including a sensor information storage unit 155 for storing information input from a sensor, range of input signals, and setting value information for the items;

A signal output unit 110 for outputting an analog filtered signal by the analog filter of the signal conversion unit;

A digital filter signal output unit 120 for outputting a digital filtering signal amplified by the secondary amplifier of the signal converter;

A digital signal output unit 130 for outputting a digital filtering signal processed by the digital filter of the signal conversion unit;

A central control unit (140) for controlling the signal processed by the signal converting unit and acquiring sensor information and outputting the sensor information to the measuring device with respect to the measurement object and range of each sensor;

And a data storage unit 160 for storing the data set by the measuring device and the data processed by the central control means.

At this time, the central control means 140,

An initialization unit 141 for initializing the signal conversion unit,

An information requesting unit 142 for requesting information input from the sensor stored in the sensor information storage unit, range of the input signal, and setting value information for the item;

If the information requested by the information requesting unit cannot be obtained, the sensor is requested to be inserted. If the information is acquired, the user is presented in the form of a graph or plain text indicating that the instrument is ready to measure the measurement object and range of each sensor. Information notification unit 143 to inform to you,

When there is a key input from the user, the key input is processed, and when a signal is acquired from the sensor, the measured data is displayed on the measuring instrument, or the contents set by the user are stored in the data storage unit or the external terminal. And an information processor 144 for transmitting the measured data.

In addition, the sensor,

Temperature sensor, humidity sensor, pressure sensor, distance sensor, weight sensor, light sensor, AC frequency sensor, current sensor, voltage sensor, acceleration sensor, illuminance sensor, electrocardiogram sensor, electrostatic sensor It is characterized by consisting of a plurality.

1 is an overall configuration diagram of a mixed signal measurement and signal conversion apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the mixed signal measurement and signal conversion apparatus of the present invention includes:

A plurality of sensors 300 for sensing a measurement object;

A mixed signal measuring and converting means (100) for analog filtering and digital filtering of the signal input from the sensor to send the filtered signal to the measuring instrument or to an external terminal;

It is configured to include; measuring device 200 for outputting a signal transmitted from the mixed signal measurement and conversion means.

Mixed signal measurement and signal conversion apparatus according to an embodiment of the present invention is largely comprises a mixed signal measurement and conversion means 100, a plurality of sensors 300 and the measuring device 200.

Since the measuring device is a device for measuring a complex signal and a measuring principle and an operating relationship thereof are known techniques, a detailed description thereof will be omitted.

Specifically, the measuring device 200 of the mixed signal measurement and signal conversion apparatus according to the present invention may be provided with a display unit for displaying measurement data such as numerical values, waveforms, the user to measure the measurement target, measurement method, measurement range, etc. One or more switch units capable of manipulating and inputting conditions may also be provided.

The display unit is preferably an LCD including a touch function, but is not limited thereto. Of course, all the known display devices may be used.

In addition, it is natural that the apparatus of this invention comprises a power supply part (not shown).

On the other hand, the mixed signal measuring and converting means 100 has a function of converting a signal from each other sensor to match the input range of the measuring device in order to expand the application range of the measuring device that receives and displays only the voltage signal Will perform.

In addition, the conventional measurement control analyzer has a function of receiving a plurality of signals for a single type of signal to display or transmit the input signals, and simultaneously receive and measure different signals (voltage, current, pressure, etc.) In order to measure the signals for each signal separately, several instruments must be purchased separately. Therefore, the measurement company was burdened by excessive expenses.

However, by configuring as described above, the measured data is stored in the data storage unit at the same time to measure different signals (the signals for this are described as different signals because there are a plurality of sensors) or the information of one sensor is stored in the sensor. Even if the user or the measuring device is changed by storing the data in the storage unit, the set reference value may provide a characteristic that enables measurement and analysis in the same state at all times.

The reference value in the measurement means the lowest measurement value (level) or measurement time for collecting a signal.

For example, the signal is measured from above the lowest measured value until the measurement time is set.

In addition, since various signals are inputted from a plurality of sensors, signals are converted by different signal converters, so that signals such as voltage, current, temperature, and pressure can be measured in a complex manner, and thus the application range thereof can be expanded. will be.

The sensor may be composed of any one of a temperature sensor, a humidity sensor, a pressure sensor, a distance sensor, a weight sensor, an optical sensor, an AC frequency sensor, a current sensor, a voltage sensor, an acceleration sensor, an illuminance sensor, an electrocardiogram sensor, and an electrostatic sensor. It is characterized in that the configuration of each of the plurality of sensors, the reference signal for the measurement to provide the expandability possible to output signals such as voltage, frequency, current.

That is, a plurality of identical sensors may be configured by receiving signals from a plurality of sensors without specifying a configured sensor.

In addition, various types of sensors may be installed and configured without being limited to the above-listed sensors.

For example, it can be composed of voltage sensor, current sensor, voltage sensor, and current sensor to measure the voltage on the primary side, current and voltage on the secondary side, and current simultaneously. Likewise, each sensor can be configured to output signals for applied voltage, current, temperature, and illuminance at the same time in the case of LED devices, providing better scalability and applicability to perform various measurements simultaneously. Will be.

In addition, the mixed signal measuring and converting means 100, which is a key component of the present invention,

A plurality of signal converters 150;

A signal output unit 110 for outputting an analog filtered signal by the analog filter of the signal conversion unit;

A digital filter signal output unit 120 for outputting a digital filtering signal amplified by the secondary amplifier of the signal converter;

A digital signal output unit 130 for outputting a digital filtering signal processed by the digital filter of the signal conversion unit;

A central control unit (140) for controlling the signal processed by the signal converting unit and acquiring sensor information and outputting the sensor information to the measuring device with respect to the measurement object and range of each sensor;

And a data storage unit 160 for storing the data set by the measuring instrument and the data processed by the central control means.

The signal output unit 110 outputs an analog filtered signal by an analog filter of the signal conversion unit to a measuring instrument, and the digital filter signal output unit 120 is digital filtering amplified by the secondary amplifier of the signal conversion unit. The signal is output to the measuring instrument.

In addition, the digital signal output unit 130 outputs the digital filtering signal processed by the digital filter of the signal converter to an external terminal.

That is, it may be interpreted as an external communication that is used for general purposes such as RS-232, USB, TCP / IP, and the like.

As described above, the signal output unit, the digital filter signal output unit, and the digital signal output unit are separately configured. The signal output unit 110 directly outputs an analog signal to measure components such as noise output from a sensor. The digital filter signal output unit 120 may apply a filter (software filter) to the analog signal to remove noise or noise for a specific frequency component.

In addition, the present invention is to provide a compatibility that can check the signal measured in the external terminal (for example, a general PC) through the digital signal output unit 130 or the purpose to increase the usability for a general expensive measuring device. Will be.

By configuring each output unit as described above, it is possible to measure the noise components of the analog signal, to measure the noise or noise for a specific frequency component, and to have a better effect of outputting the signal measured by an external terminal. Will be provided.

2 is a block diagram of a signal conversion unit of the mixed signal measurement and signal conversion device according to an embodiment of the present invention.

As shown in Figure 2, the signal conversion unit 150,

A primary amplifier 151 for amplifying the analog signal input from the sensor,

An analog filter 152 for analog filtering the amplified analog signal,

A digital filter 153 for digitally filtering the amplified analog signal,

A second amplifier 154 for amplifying the signal digitally filtered by the digital filter;

And a sensor information storage unit 155 for storing information input from a sensor, a range of an input signal, and setting value information for the item.

The primary amplifier 151 is for amplifying the analog signal input from the sensor, the size of the signal measured according to the type of the sensor may be uV ~ kV (microvolt ~ kilovolt) may be measured This is to make the measured signal smaller or larger in order to make the signal in the range that can be checked in.

The analog filter 152 is for performing an analog filtering process on the amplified analog signal, and the analog filtering process is performed on the signal of the primary amplification unit. In the filtering process, the digital filter is applied to the microprocessor as compared to the analog filter. Due to the problem that the cost may increase, it is preferable not to configure a plurality of digital filters as possible in terms of reducing the manufacturing cost is to use an analog filter.

In addition, by passing the signal through analog filtering alone, users can configure additional analog filter circuits to provide a better effect of outputting the desired signal.

The digital filter 153 is for digitally filtering the amplified analog signal. Since the microprocessor is applied, the digital filter 153 can be designed by modifying the software without configuring a circuit. Therefore, the digital filter 153 can be removed or added to a specific frequency region or signal. Since it provides an advantage that can be configured as a digital filter in addition to the analog filter as described above.

In addition, according to the test results of the designed digital filter, it can be applied to the analog filter design, thereby providing a better effect that can be used as a test device for the analog filter design.

The secondary amplifier 154 is for amplifying a digitally filtered signal by a digital filter, and the digital filter is preferably implemented by using a microprocessor. In order to increase the magnitude of the voltage output, the amplification of the output signal of the digital filter is performed through the secondary amplifier.

An item input from the sensor may be, for example, a voltage or a current.

In addition, setting value information for each item means setting value information such as a measurement time, a trigger level, and an alarm.

Figure 3 is a block diagram of the central control means of the mixed signal measurement and signal conversion apparatus according to an embodiment of the present invention.

As shown in Figure 3, the central control means,

An initialization unit 141 for initializing the signal conversion unit,

An information requesting unit 142 for requesting information input from the sensor stored in the sensor information storage unit, range of the input signal, and setting value information for the item;

If the information requested by the information requesting unit cannot be obtained, the sensor is requested to be inserted. If the information is acquired, the user is presented in the form of a graph or plain text indicating that the instrument is ready to measure the measurement object and range of each sensor. Information notification unit 143 to inform to you,

When there is a key input from the user, the key input is processed, and when a signal is acquired from the sensor, the measured data is displayed on the measuring instrument, or the contents set by the user are stored in the data storage unit or the external terminal. And an information processing unit 144 for transmitting the measured data.

The initialization unit initializes the signal conversion unit when power is supplied by the power supply unit.

After the initialization is executed, the information requesting unit 142 requests the set value information for the items input from the sensor stored in the sensor information storage unit, the range of the input signal, and the items.

When the information notification unit 143 fails to obtain the information requested by the information requesting unit, the sensor inserts a sensor. The mixed signal measuring and converting means of the present invention has a connection unit (not shown) for connecting to the sensor. It is natural to be done.

For example, a message indicating that there is no sensor inserted in the display screen of the meter is output.

In this case, when the information is acquired, the user is informed in the form of a graph or plain text that the measurement object and the range for each sensor are ready to be measured on the display screen of the measuring instrument.

When the measurement is ready, the mixed signal measuring and converting means waits for a key input from a user or waits for data input from a sensor.

At this time, when there is a key input from the user, the information processing unit 144 performs the processing for the key input.

For example, a key input means an input for setting measurement time, trigger level, display items according to a measurement object, and the like.

In addition, when necessary, data by user input, such as a reference measurement value or measurement time, may be sent to the sensor information storage unit and stored separately.

Also, when a signal is acquired from the sensor, the measured data is displayed on the measuring instrument. The measured signal is displayed on the measuring instrument by displaying information (voltage, current, temperature, pressure, etc.) about each signal. Graph the data.

Alternatively, the contents set by the user may be stored in the data storage unit, or data measured by an external terminal may be transmitted.

The setting content of the user becomes a reference element for the measurement target, such as the size of the signal to be measured, the measurement time, and the trigger level.

4 is an exemplary view showing an example in which measured data is displayed on a measuring device of a mixed signal measuring and signal converting apparatus according to an embodiment of the present invention.

When the process of acquiring the information on the sensor from the mixed signal measuring and converting means of the present invention is finished, the detailed display of the measurement graph and the measured data for each sensor is output as shown in FIG. 4.

That is, a signal is input from each of the mixed sensors, and each signal is converted to display a measurement graph, measurement data, and information.

Examples of the items that can be output as the measurement graph, respectively, can be configured as shown in the following table according to the purpose, and the information of the sensor is to be stored in the sensor information storage unit of the signal conversion unit.

Sensor 1 Sensor2 Sensor 3 Sensor 4 AC voltage AC current RPM Temperature DC voltage DC current pressure Distance Voltage electric current Illuminance Luminance Frequency output Voltage electric current pressure Proximity sensor static Proximity sensor static Phase 1 Phase 2 Phase 3 electric current Rotation speed talk carbon dioxide Temperature

That is, as well as the conventionally measured voltage and frequency, it is possible to measure a variety of signals such as temperature, pressure, illuminance, brightness, torque, as described above to provide the effect of increasing the utilization of expensive equipment. .

On the other hand, the prior art requires a separate measuring instrument for measuring each signal in order to measure and analyze a plurality of different signals, the problem of synchronization of the measured data has occurred.

Therefore, a cost burden of purchasing a plurality of instruments and a separate programming operation for synchronization occur, thus requiring additional maintenance costs.

Through the configuration and operation as described above, in the case of the present invention, it is possible to measure various mixed signals of different types of sensors by using a single measuring device. Even if a sensor is mounted, the sensor information can be updated and used, thereby providing a highly scalable effect.

As described above, the present invention may have various various modified inventions within the scope of not changing the original technical idea, and all such inventions are known in advance that they belong to the scope of the present invention.

100: mixed signal measurement and conversion means
200: measuring instrument
300: sensor

Claims (4)

In mixed signal measurement and signal conversion apparatus,
A plurality of sensors 300 for sensing a measurement object;
A mixed signal measuring and converting means (100) for analog filtering and digital filtering of the signal input from the sensor to send the filtered signal to the measuring instrument or to an external terminal;
Mixed signal measurement and signal conversion apparatus comprising a; measuring device for outputting a signal transmitted from the mixed signal measurement and conversion means (200).
The method according to claim 1,
The mixed signal measurement and conversion means 100,
A primary amplifier 151 for amplifying the analog signal input from the sensor,
An analog filter 152 for analog filtering the amplified analog signal,
A digital filter 153 for digitally filtering the amplified analog signal,
A second amplifier 154 for amplifying the signal digitally filtered by the digital filter;
A plurality of signal conversion units 150 including a sensor information storage unit 155 for storing information input from a sensor, range of input signals, and setting value information for the items;
A signal output unit 110 for outputting an analog filtered signal by the analog filter of the signal conversion unit;
A digital filter signal output unit 120 for outputting a digital filtering signal amplified by the secondary amplifier of the signal converter;
A digital signal output unit 130 for outputting a digital filtering signal processed by the digital filter of the signal conversion unit;
A central control unit (140) for controlling the signal processed by the signal converting unit and acquiring sensor information and outputting the sensor information to the measuring device with respect to the measurement object and range of each sensor;
And a data storage unit (160) for storing the data set by the measuring unit and the data processed by the central control unit.
The method according to claim 2,
The central control unit 140,
An initialization unit 141 for initializing the signal conversion unit,
An information requesting unit 142 for requesting information input from the sensor stored in the sensor information storage unit, range of the input signal, and setting value information for the item;
If the information requested by the information requesting unit cannot be obtained, the sensor is requested to be inserted. If the information is acquired, the user is presented in the form of a graph or plain text indicating that the instrument is ready to measure the measurement object and range of each sensor. Information notification unit 143 to inform to you,
When there is a key input from the user, the key input is processed, and when a signal is acquired from the sensor, the measured data is displayed on the measuring instrument, or the contents set by the user are stored in the data storage unit or the external terminal. Mixed signal measurement and signal conversion apparatus characterized in that it comprises a information processing unit (144) for transmitting the measured data.
The method according to claim 1,
The sensor,
Temperature sensor, humidity sensor, pressure sensor, distance sensor, weight sensor, light sensor, AC frequency sensor, current sensor, voltage sensor, acceleration sensor, illuminance sensor, electrocardiogram sensor, electrostatic sensor Mixed signal measurement and signal conversion apparatus comprising a plurality of.

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