KR100715509B1 - Computer coltrol device and method using impact sensors - Google Patents

Abstract

The present invention relates to a computer control device using a shock sensor, at least one shock sensor provided on the surface to be shocked and at least one for converting the analog signal output from the at least one shock sensor into a digital signal And a microprocessor for receiving a signal output from the at least one comparator and outputting a signal for controlling the computer according to the intensity, duration, and interval of the impact.

Description

Computer Control Device and Control Method Using Shock Sensor {COMPUTER COLTROL DEVICE AND METHOD USING IMPACT SENSORS}

1 is a block diagram showing the overall configuration of a computer control apparatus according to a preferred embodiment of the present invention.

2A, 2B, and 2C are graphs illustrating various voltage signals generated by the first shock sensor and the second shock sensor.

3 is a schematic diagram showing an example in which a computer control device using an impact sensor according to the present invention is installed in a kitchen.

4 is a circuit diagram for implementing a computer control device using an impact sensor according to a preferred embodiment of the present invention.

5A, 5B, 5D, and 5E are graphs showing various voltage signals and reference voltages generated by the first amplifier or the second amplifier, and FIGS. 5C and 5F are generated by the first comparator and the second comparator. It is a graph showing the voltage signal.

6A, 6B, 6C, 6D, and 6E are graphs illustrating various voltage signals generated in the first comparator and the second comparator by various input signals.

7A, 7B, and 7C are waveforms showing a difference in transmission time of a digital signal input to a microprocessor due to a time difference of shock waves generated by applying a shock to a surface on which a shock sensor is installed, and arriving at each shock sensor. It is also.

8 is a conceptual diagram for explaining a position of a user when the user of the present invention is impacted by the left foot.

9 is a conceptual view for explaining the position of the user when the user of the present invention to the right foot impact.

<Explanation of symbols for the main parts of the drawings>

101: first shock sensor 102: first amplifier

103: first comparator 104: second shock sensor

105: second amplifier 106: second comparator

107: first switch 108: second switch

109: microprocessor 110: transmit and receive chip

111: computer 301: monitor

302: sink 801: foot

The present invention relates to an apparatus and method for controlling a computer using an impact, and more particularly, to an apparatus and a method for receiving a shock as a signal and processing the signal into electrical information and controlling the computer using the information. .

The development of the IT industry is bringing a lot of changes to our lives. In particular, IT services in the kitchen changed the kitchen culture itself. In the past, the kitchen was simply a space for cooking and storing food, but as the concept of each space is expanded or reduced or the concept is changed in the building by IT technology, the concept and use of the kitchen are changing. Already in some places it is common to watch TV in the kitchen or to use information through the Internet. It is also possible to check visitors in the kitchen, and it is already possible to monitor the condition of the child playing on the playground using a camera. As such, IT technology incorporated into the kitchen, which is one of the living spaces, makes life convenient, rich and enriched.

However, kitchen spaces usually require the use of hands when cooking or washing dishes, and use water with high risk of fatal error in information technology equipment. Therefore, when using the electronic equipment in the kitchen there is a risk of electric shock accident because the equipment is touched by wet hands.

In addition, due to such environmental limitations, the keyboard, mouse, touch screen, remote control, etc. currently used in the kitchen have a high risk of breakdown due to water or heat, and use interface equipment because they must be installed in a work space such as a sink. This is extremely uncomfortable, there is a problem that the foreign matter may be added to the food hygienically.

Therefore, the present invention is to solve this problem, it is an object of the present invention to provide a computer control device and a control method using an impact sensor to prevent an electric shock accident that may occur by touching the equipment with wet hands.

Another object of the present invention is to provide a computer control device and a control method using an impact sensor that can reduce the risk of failure of information technology equipment caused by using wet hands.

Still another object of the present invention is to provide a computer control device and a control method using an impact sensor that can solve problems such as contamination caused by the introduction of foreign substances into food.

As a technical means for solving the above problems, the computer control device according to the present invention is provided on the surface subjected to an impact, at least one shock sensor for detecting a shock, the analog signal output from the at least one shock sensor digital signal And at least one comparator for converting the signal into a signal, and a microprocessor for receiving a signal output from the at least one comparator and outputting a signal for controlling the computer according to the intensity, duration, and interval of the impact.

Such computer control device preferably further comprises at least one amplifier connected between the at least one shock sensor and the at least one comparator and amplifying the analog signal output from the at least one shock sensor.

In addition, the computer control apparatus according to the present invention preferably further comprises at least one switch for controlling ON / OFF of the signal input from the at least one comparator, and is connected between the microprocessor and the computer to transfer data. It is preferable to further include a transceiver chip.

In the computer control device according to the present invention, it is preferable that at least one impact sensor generates a voltage signal having a frequency and a magnitude according to the intensity and duration of the impact, based on the eigenvalues. The input analog voltage higher than the reference voltage is converted to the high state and the input analog voltage lower than the reference voltage is converted to the low state based on the voltage determined by the voltage divider circuit formed of at least one resistor. It is desirable to.

According to another aspect of the present invention, a computer control method includes performing a shock sensor, a comparator, and a computer controller equipped with a microprocessor, the shock sensor detecting a shock generated by a user, and the comparator from the shock sensor. And converting the output analog signal into a digital signal, and controlling the computer according to the intensity, duration, and interval of the impact by receiving the signal output from the comparator.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the technical idea of the present invention.

1 is a block diagram showing the overall configuration of a computer control apparatus according to a preferred embodiment of the present invention.

Referring to FIG. 1, a computer control apparatus using an impact sensor includes a first shock sensor 101, a second shock sensor 104, a first amplifier 102, a second amplifier 105, and a first comparator 103. , A second comparator 106, a first switch 107, a second switch 108, a microprocessor 109, a transmit / receive chip 110, and a computer 111.

When the user strikes the surface on which the first shock sensor 101 and the second shock sensor 104 are attached, the first shock sensor 101 and the second shock sensor 104 generate a voltage by the piezoelectric effect. Let's do it. At this time, the frequency of the generated voltage is based on the intrinsic values of the first shock sensor 101 and the second shock sensor 104, and as shown in Figure 2 depending on the strength of the shock, the duration of the shock Generates a voltage signal of the form. These voltage signals are amplified by the first amplifier 102 and the second amplifier 105, and converted into digital signals by the first comparator 103 and the second comparator 106, respectively.

The converted digital signal is input to the microprocessor 109 and controls the computer 111 through the transmission / reception chip 110.

2A, 2B and 2C are graphs showing various voltage signals generated by the first shock sensor 101 and the second shock sensor 104.

FIG. 2A is a waveform diagram of an analog signal generated for a weak and short impact, FIG. 2B is a waveform diagram of an analog signal generated for a strong and short impact, and FIG. 2C is a waveform diagram of an analog signal generated for a strong and long shock. It is a waveform diagram. 2A, 2B, and 2C, it can be seen that various analog signals are generated due to the difference in the length and intensity of the impact. In other words, it can be seen that a weak shock generates a low voltage, and a strong shock generates a high voltage. In addition, it can be seen that a short shock has a short duration of voltage and a long shock has a long duration of voltage.

When the shock is applied to the first shock sensor 101 and the second shock sensor 104 as described above, the intensity and time of the shock are proportional to the magnitude of the voltage and the duration of the voltage. The computer 111 can be controlled by using it as an input of the processor 109.

3 is a schematic diagram showing an example in which a computer control device using an impact sensor according to the present invention is installed in a kitchen.

Referring to FIG. 3, the user checks the monitor 301 installed on the front side of the sink 302 while working on the kitchen, while impacting the surface on which the first shock sensor 101 and the second shock sensor 104 are attached. To control the computer 111.

Hereinafter, a computer control apparatus and a control method using a shock sensor according to a preferred embodiment of the present invention with reference to Figures 4 to 9 will be described in detail.

4 is a circuit diagram for implementing a computer control device using an impact sensor according to a preferred embodiment of the present invention.

Referring to FIG. 4, when a shock generated by a user is applied to the first shock sensor 101 and the second shock sensor 104, a voltage is generated by the piezoelectric effect. The frequency of the generated voltage is determined based on the intrinsic values of the first shock sensor 101 and the second shock sensor 104. The magnitude, duration and shape of the voltage depends on the strength and duration of the impact applied.

The signal output from the first shock sensor 101 is amplified by the first amplifier 102 and input to the input terminal of the first comparator 103. At this time, the first amplifier 102 is composed of OP-AMP (IC1) and resistors (R1, R2), the input signal through the sign non-inverting amplifier of the same phase of the input and output (1 + R2 / R1) Is amplified and output. If the two resistors have the same size (R1 = R2), the amplification degree of the first amplifier 102 becomes two.

The signal input to the first comparator 103 is converted to a power supply voltage in a high state, and is higher than the reference voltage based on the voltage determined by the voltage distribution circuit composed of resistors R5 and R6. The low voltage is converted to 0V, which is low. That is, an analog input signal is converted into a digital signal by the first comparator 103 and output, and the output signal is input to the input terminal RCO of the microprocessor 109.

Similarly, the signal output from the second shock sensor 104 is amplified by the second amplifier 105 and input to the second comparator 106, and the second amplifier 105 is also the same as the first amplifier 102. It is composed.

The signal inputted to the second comparator 106 is converted into a power supply voltage having a high state and higher than the reference voltage based on the voltage determined by the voltage distribution circuit composed of resistors R5 and R6. The low voltage is converted to 0V, which is low. That is, the analog input signal is converted into a digital signal by the second comparator 106 and output, and the output signal is input to the input terminal RC1 of the microprocessor 109.

The first switch 107 and the second switch 108 respectively serve to control ON / OFF of the signal from the first shock sensor 101 and the signal from the second shock sensor 104.

The microprocessor 109 analyzes the digital signals input through the input terminals RC0 and RC1 and transmits the digital signals to the transmission / reception chip 110. The transmit / receive chip 110 is an interface used by a computer to exchange data with another serial device. In the present invention, the transmit / receive chip 110 serves as an interface between the microprocessor 109 and the computer 111 and is generated from the microprocessor 109. Control the computer 111 with the specified instructions. The transmission / reception chip 110 may include a power boosting circuit for data transmission.

The input of the microprocessor 109 is a port RC0 to which a voltage signal generated from the first comparator 103 is input, a port RC1 to which a voltage signal generated from the second comparator 106 is input, and a first switch ( A port RC0 to which the signal of 107 is input and a port RC3 to which the signal of the second switch 108 is input.

The output of the microprocessor 109 is a serial communication dedicated port (RC6, RC7) for communication, and a port (RC4, RC5) for turning on the light emitting diode (LED) 1, 2 indicating the current operation status It is composed of

When a high signal is output from the ports RC4 and RC5, there is a voltage difference between the base and the emitter of the transistor TR1 or TR2. Thus, when the base current flows, the transistor is activated to collect the collector and emitter. Current flows between them. When current flows between the collector and the emitter, LED1 or LED2 is turned on to indicate the operating state of the entire circuit of FIG.

The clock for the operation of the microprocessor 109 may use a 20 MHz crystal. The electrolytic capacitor and resistor connected to the MCLR port are a low-pass filter that is generated from spike noise and excessive voltage of electrostatic discharge (ESD) that may be generated when power is applied during initial operation. It acts as a protection circuit to protect the microprocessor 109 from excessive current to prevent a malfunction of the microprocessor 109.

5A, 5B, 5E, and 5D are graphs illustrating various voltage signals and reference voltages generated by the first amplifier 102 or the second amplifier 105, and FIGS. 5C and 5F illustrate the first comparator ( 103 is a graph showing the voltage signals generated by the second comparator 106.

Specifically, FIG. 5A is a waveform diagram of a long or strong analog signal amplified by the first amplifier 102 or the second amplifier 105, and FIG. 5B is the first comparator 103 or the second comparator 106. 5A is a waveform diagram comparing a reference voltage and an analog signal of FIG. 5A, and FIG. 5C is a waveform diagram of an analog signal of FIG. 5A converted to a digital signal by the first comparator 103 or the second comparator 106. Similarly, FIG. 5D is a waveform diagram of a short or weak analog signal amplified by the first amplifier 102 or the second amplifier 105, and FIG. 5E is the first comparator 103 or the second comparator 106. 5D is a waveform diagram comparing the analog voltage of FIG. 5D and the analog signal of FIG. 5D, and FIG. 5F is a waveform diagram of the analog signal of FIG. 5D converted into a digital signal by the first comparator 103 or the second comparator 106.

Referring to FIGS. 5C and 5F, when a signal generated by a long or strong shock is converted into a digital signal and a signal converted by a short or weak shock into a digital signal, the magnitude and length of the signal are increased. You can see that it is different. That is, since the digital signal applied to the microprocessor 109 varies according to the impact applied by the user, the computer 111 can be controlled.

6A, 6B, 6C, 6D, and 6E are graphs illustrating various voltage signals generated in the first comparator 103 and the second comparator 106 by various input signals.

FIG. 6A is a waveform diagram showing a digital signal when one short impact is applied, FIG. 6B is a waveform diagram showing a digital signal when two short impacts are applied, and FIG. 6C is a digital diagram when a long shock is applied. 6D is a waveform diagram showing a digital signal when two long shocks are applied, and FIG. 6E is a waveform diagram showing a digital signal when one short impact is applied after one long shock. to be.

6A to 6E, the digital signal varies according to the interval of the shock, similarly to the change in the digital signal according to the strength and length of the impact described in FIG. 5, thereby changing the strength, length, or interval of the impact. It can be seen that the computer 111 can be controlled.

For example, the computer 111 is controlled by a signal interval. For example, when one shock is applied briefly, the following command is performed. When the shock is applied twice, the previous command is performed. When it is applied to perform the same function as the enter of the keyboard, to perform the function of the initialization when two long shocks, and to perform the function of the menu when one long and one short impact.

FIG. 7A illustrates a shock wave generated when an impact is applied to a surface on which the first shock sensor 101 and the second shock sensor 104 of FIG. 1 are installed, and the shock wave is generated by the first shock sensor 101 and the second shock sensor. 104 is a conceptual diagram showing what is delivered. As shown in FIG. 7A, for example, the first impact sensor 101 and the second impact sensor 104 may be provided at a predetermined interval below the sink 302. When a shock occurs at any point, the shock wave is transmitted to the first shock sensor 101 and the second shock sensor 104. At this time, the impact occurrence point 701 may be inferred by comparing the time when the shock wave arrives at the first shock sensor 101 and the second shock sensor 104. The arrival time of the shock wave is measured based on the first digital signal output from the first shock sensor 101 and the second shock sensor 104. FIG. 7B is a waveform diagram illustrating that a waveform generated by an impact is converted into a digital signal, and FIG. 7C is a microprocessor 109 due to a time difference between the shock waves arriving at the first shock sensor 101 and the second shock sensor 104. It is a waveform diagram showing the difference in propagation time of an input digital signal.

8 is a conceptual diagram for explaining a location of a user when the user strikes with his left foot.

It is assumed that the distance between the first shock sensor 101 and the second shock sensor 104 is 5 m, the transmission speed of the shock wave is 1500 m / s, and the distance between the average legs of the user is 50 cm. When the user strikes the left foot 801, the distance from the first shock sensor 101 to the left foot 801 is 2.25 m, and the distance from the second shock sensor 104 to the left foot 801 is 2.75 m. . In terms of time, the time it takes for the shock wave to reach the first shock sensor 101 from the impact point 701 is 1.5 ms (2.25 m / 1500 m / s), and the shock wave reaches the second shock sensor 104. The time to reach is 1.833ms (2.75m / 1500m / s). Since subtracting 1.5ms from 1.833ms results in 0.333ms, the first shock sensor 101 receives a shock wave 0.333ms ahead of the second shock sensor 104, and the user receives the first shock sensor 101 by a distance corresponding to the time. It is located close to). Converting this time into distance (0.333ms * 1500m / s = 50cm), it can be seen that the distance from the impacted position to the first shock sensor 101 is 50cm shorter than the distance to the second shock sensor 104. . The microprocessor 109 accepts such a user's position as an input parameter, thereby enabling more various controls.

9 is a conceptual diagram for explaining a location of a user when the user strikes with his right foot.

It is assumed that the distance between the first shock sensor 101 and the second shock sensor 104 is 5 m, the transmission speed of the shock wave is 1500 m / s, and the distance between the average legs of the user is 50 cm. When the user strikes the right foot 901, the distance from the first shock sensor 101 to the right foot 901 is 2.75 m, and the distance from the second shock sensor 104 to the right foot 901 is 2.25 m. . In terms of time, the time it takes for the shock wave to reach the second shock sensor 104 from the impact point 701 is 1.5 ms (2.25 m / 1500 m / s), and the shock wave reaches the first shock sensor 101. It takes 1.833ms (2.75m / 1500m / s). Since subtracting 1.5ms from 1.833ms results in 0.333ms, the second shock sensor 104 received a shock wave 0.333ms ahead of the first shock sensor 101, and the user has a second shock sensor 104 by a distance corresponding to the time. It is located close to). By converting this time into distance (0.333ms * 1500m / s = 50cm), it can be seen that the distance from the impacted position to the second shock sensor 104 is 50cm shorter than the distance to the first shock sensor 101. . The location of the user is accepted by the microprocessor 109 as a parameter of the input to allow more control.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

As described above, the computer control device using the impact sensor according to the present invention uses a shock sensor that does not have to spare the space, and has a configuration to control the computer using the impact, cooking or other kitchen work It has the effect of preventing the electric shock which can be caused by handling the equipment with wet hands, and it is effective to eliminate the cause of the failure that can occur in the interface equipment or other information technology equipment due to the ingress of moisture. It is possible to obtain various information by enabling various computer tasks while solving problems such as contamination caused by foreign substances being input.

Claims (10)

A first impact sensor provided on a surface subjected to an impact and generating a voltage signal having a frequency and a magnitude according to the intensity, interval, and duration of the impact based on an inherent value; A second impact sensor provided at a position spaced on the same plane as the first impact sensor and generating a voltage signal having a frequency and a magnitude according to the intensity, interval, and duration of the impact based on an intrinsic value; First and second comparators for converting analog signals output from the first and second shock sensors, respectively, into digital signals; And a microprocessor which receives the signals output from the first and second comparators and outputs a signal for controlling the computer according to the intensity, interval, duration, and location of the impact. 2. The apparatus of claim 1, wherein the first and second amplifiers connected between the first and second shock sensors and the first and second comparators, respectively, to amplify the analog signals output from the first and second shock sensors. Computer control device characterized in that it further comprises. The computer control device of claim 1, further comprising at least one switch for controlling ON / OFF of a signal input from the first and second comparators. The computer control device of claim 1, further comprising a transmission / reception chip connected between the microprocessor and the computer to transfer data. delete The method of claim 1, wherein the first and second comparators convert the input analog voltage higher than the reference voltage into a high state based on a voltage determined by a voltage distribution circuit including at least one resistor. A computer control device using an impact sensor, characterized in that the input analog voltage lower than the reference voltage is converted to a low state. In the computer control method performed in the computer control device equipped with the first and second shock sensor, the first and second comparators, and the microprocessor, (a) detecting the shock generated by the user by generating a voltage signal having a frequency and a magnitude according to the intensity, interval, and duration of the shock based on the eigenvalues of the first and second shock sensors; ; (b) the first and second comparators converting the analog signals output from the first and second shock sensors, respectively, into digital signals; (c) the microprocessor receiving a signal output from the first and second comparators and controlling the computer according to the intensity, interval, duration and location of the impact. Way. 8. The computer control method of claim 7, further comprising amplifying the analog signals output from the first and second shock sensors after step (a). delete The input comparator of claim 7, wherein the comparator converts an input analog voltage higher than a reference voltage into a high state based on a voltage determined by a voltage divider circuit formed of at least one resistor. Wherein the analog voltage is converted to a low state.

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