JP3418582B2 - Voltage measuring device, recording medium thereof, and game machine including the voltage measuring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a voltage measuring device for measuring an AC power supply voltage supplied to a game machine , a recording medium therefor, and a game machine equipped with the voltage measuring device. is there.

[0002]

2. Description of the Related Art In the game machine industry, there are cases where a contract is entered into in a commercial transaction to prohibit the export of a game machine to be traded. When such a contract is made, it is necessary to take measures to prevent the game machine under transaction from being illegally exported and used in a foreign country.

When taking measures to prevent such illegal use in foreign countries, it is desirable to simplify the device structure of the means and avoid higher costs.

[0004]

The present inventor has noticed that the voltage of the commercial power source differs from country to country as a measure to prevent the use due to the illegal export. As is well known, game machines for business use are driven by an AC commercial power source. Therefore, a means for automatically measuring the power supply voltage is provided in the game machine, and When a different power supply voltage is detected, it is possible to prevent the intended use by illegal export by taking measures so that the game is not started.

However, a generally known voltage detecting device has a complicated device structure and a high device cost. When such a voltage detecting device is incorporated in a game machine, not only the device structure of the game machine becomes complicated, but also the game machine. There is a circumstance that the cost of will increase. When measuring the power supply voltage for the purpose of preventing the use due to illegal export, it is not always necessary to measure with extremely high accuracy. The present invention pays attention to this point, and a simple voltage measuring device capable of measuring voltage while ensuring the accuracy necessary for preventing use due to illegal export despite its simple and inexpensive device configuration, its recording medium , and That electric
It is an object to provide a game machine equipped with a pressure measuring device .

[0006]

The present invention achieves the above object.
In order to solve the problem,
It is stepwise. That is, the first invention of the voltage measuring device
AC that is cut off by the threshold voltage value
Voltage waveform disconnection period is L (low) or H (high) level
It has as an active period of L, L (low) and H (high)
In the binary signal in which the levels of
Binary signal measuring means for measuring the active period and period, and
Active period measured by the binary signal measuring means of
Data storage that stores data related to intervals and cycles in memory
Means and a known voltage value V of the reference AC voltage signal₀And the above 2
Reference AC voltage signal measured by the digitized signal measuring means
Data T corresponding to the active period of₀And the cycle
Based on the data T and
Threshold voltage V_T0Seeking a ho
Field voltage calculation means and input AC voltage signal to be measured
Is measured by the binarized signal measuring means with respect to
Data T corresponding to the active period_XAnd the data corresponding to the cycle
The voltage value V of the reference voltage signal T'and the reference AC voltage signal.₀Based on
Of the binarized signal obtained from the measured AC voltage signal
-) Phase position at the switching point between H level and H level
Value V of the reference AC voltage signal in the storage_TXGiven in advance
V calculated using the calculated formula_TXComputing means and
Pressure V_T0And V_TXIs the voltage value V of the measured AC voltage signal
_XAnd the voltage value V of the reference AC voltage signal₀Equal to the ratio of
Using V₀And V_T0And V_TXBased on each voltage value of
Measured AC voltage signal voltage V _XAsk for V_XWith computing means
The configuration has the means for solving the problem.

The voltage measuring device of the second invention comprises the structure of the voltage measuring device of the first invention, and an arithmetic expression for _obtaining the threshold voltage V _T0 is V _T0 = V ₀ COS
The arithmetic expression given by {(T ₀ / T) · (π / 2)} for calculating the voltage V _TX is V _{T X} = V ₀ COS {(T _X /
T ′) · (π / 2)}, and the arithmetic expression for calculating V _X is given by V _X = V ₀ (V _T0 / V _TX ) as a means for solving the problem.

Further, a voltage measuring device according to a third aspect of the invention is the voltage measuring device having the configuration of the voltage measuring device according to the first or the second aspect of the invention, in which the voltage of the input AC voltage signal is processed on the downstream side. A voltage converter that converts the voltage into a level and an AC voltage signal that has been voltage-converted by the voltage converter are cut by a threshold voltage V _T0 , and a cutting period of this AC voltage waveform is L (low) or H (high). A means for solving the problem is provided with a binarization circuit which has a level active period and creates a binarized signal in which L (low) and H (high) levels are alternately continuous. .

Further, the invention of the recording medium of the voltage measuring device has a disconnection period of an AC voltage waveform disconnected by the threshold voltage value as an active period of L (low) or H (high) level, and L (low). And H (high)
Signal measurement procedure for measuring the active period and cycle in a binary signal in which the levels of the signals are alternately continuous, a data storage procedure for storing data on the measured active period and cycle in a memory, and a reference alternating current The threshold voltage is read from the memory by reading out data relating to the active period and the cycle based on the known voltage value V _{0 of the} voltage signal and the reference AC voltage signal stored in the memory, using an arithmetic expression given in advance based on the read data. V
A threshold voltage calculation procedure for _{obtaining T0} and storing it in the memory, and data relating to the active period and period measured in the binarized signal measurement procedure for the input AC voltage signal to be measured and stored in the memory. The voltage value V ₀ of the reference AC voltage signal is read from the memory, and the switching point between the L (low) level and the H (high) level of the binary signal obtained from the measured AC voltage signal based on the read data. The procedure of the V _TX calculation for _obtaining the voltage value V _TX of the reference AC voltage signal at the phase position using a predetermined calculation formula and storing it in the memory, and the ratio of the calculated voltages V _T0 and V _TX are measured. Voltage V of AC voltage signal
V ₀ , V _T0, and V _TX read from the memory by utilizing the fact that it is equal to the ratio of _X and the voltage value V ₀ of the reference AC voltage signal.
And a V _X calculation procedure for obtaining the voltage V _X of the AC voltage signal to be measured based on the respective voltage values of 1) are stored as means for solving the problem. Furthermore, the game machine of the present invention
Is the voltage measuring device of the first, second or third invention,
The measured signal which is incorporated and obtained by the V _X calculation means
The voltage V _X of the flow voltage signal is outside the predetermined criteria.
Provided with a means to disable gameplay
It is characterized by being.

In the present invention, an arithmetic expression for _obtaining the threshold voltage V _T0 of the binarization circuit, an arithmetic expression for _obtaining the voltage V _TX, and an arithmetic expression for obtaining the voltage V _{X of the} AC voltage to be measured are given to the device in advance. Has been. In this state, a reference AC voltage signal having a known voltage value V ₀ is input, so that the binarization circuit creates a binarized signal. Then, the binarized signal measuring means measures the active period and cycle of the binarized signal, and the data storage means stores data relating to the active period and cycle in the memory. The data of the known voltage value V ₀ is stored in the memory in advance in the device manufacturing stage before the measurement of the active period and the cycle, or is stored in the memory when the active period and the cycle are measured.

Next, an AC voltage signal to be measured whose voltage value V _X is unknown is input from a power source or the like, and similarly, by a binarizing circuit,
After being binarized, the binarized signal measuring means 2
The active period and cycle of the binarized signal are measured, and data relating to the active period and cycle is stored in the memory by the data storage means.

The threshold voltage calculation means is a memory
To V₀And the frequency of the binarized signal with respect to the reference AC voltage signal.
Data corresponding to the period and data corresponding to the active period
T ₀Read the data about and the threshold
Formula V for calculating the voltage_T0= V₀COS {(T₀/
T) · (π / 2)} and the threshold value of the binarization circuit
Field voltage V_T0And the calculated value is stored in memory.
Store. Also, V_TXThe calculation unit is V from the memory₀And
Corresponds to the period of the binarized signal for the measured AC voltage signal
Data T'and data T corresponding to the active period_XRelated
Read the data to_TXFormula V for calculating_TX=
V₀COS {(T_X/ T ') · (π / 2)}
Pressure V_TXAnd the calculated value is stored in memory.
It And V_XThe calculation unit is V from the memory₀, V_T0, V
_TXData is read and the calculation formula V_X= V₀(V_T0/
V_TX) Is used to measure the voltage V of the AC voltage signal to be measured._XSeeking
Meru. In this way, the unknown AC voltage signal
Pressure V_XEffectively using the simple voltage measuring device of the present invention
Desired.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a voltage measuring device 1 according to the present invention incorporated in a game machine 2.
The voltage measuring device 1 according to the present embodiment includes a voltage converter 3 and a voltage converter 2.
It is configured to have a value conversion circuit 5 and a voltage measurement circuit 6. An input terminal 7 is connected to the voltage converter 3, and the input terminal 7 is formed by a plug or the like inserted into a socket of a power source (AC commercial power source).

The voltage converter 3 has a function of converting an input power supply voltage into a voltage suitable for signal processing in the next binarization circuit 5 and performing AC insulation between the binarization circuit 5 side and the power supply side. And a circuit such as a photocoupler or a transformer.

A DC input voltage terminal 4 connected to the binarization circuit 5 is a terminal for taking in a DC voltage, and a DC drive voltage (DC power supply voltage) is 2 from this DC input voltage terminal 4.
By being supplied to the binarization circuit 5, the binarization circuit 5 is in an operating state.

The binarization circuit 5 processes the AC voltage signal supplied from the voltage converter 3 to create a binarized signal. FIG. 3 shows an example of creating this binarized signal. In the figure, V _T0 is a threshold voltage (threshold voltage value) given to the binarization circuit 5, and is given to both the positive side and the negative side with the same absolute value. FIG. 3A is a sine waveform of an AC voltage signal supplied via the voltage converter 3, a solid line represents a reference AC voltage signal with a known voltage value (peak voltage value) V ₀ , and a chain line represents a measurement target. 3 shows a sine wave of the measured AC voltage signal of.

The binarization circuit 5 has a threshold voltage V
_The AC voltage signal waveform is cut by _T0 , and the cutoff period is set to the L (low) level active period and the non-cutting period is set to the H (high) level to generate a binary signal. The solid line digital signal in FIG. 3B represents a binarized signal created from the reference AC voltage signal, and the chain line digital signal represents a binarized signal created from the measured AC voltage signal. The binarization circuit 5 applies the created binarized signal to the voltage measurement circuit 6.

FIG. 2 shows a more detailed block configuration of the voltage measuring circuit 6. The voltage measuring circuit 6 includes a binarized signal measuring means 10, a data storing means 11, a memory 12, and
The writing / reading means 19, the calculating means 13, the control circuit 8, and the recording medium 9 are included in the calculating means 13.
Is provided with a threshold voltage calculation means 14, a V _TX calculation means 15, and a V _X calculation means 16. The operation procedure of each means 10, 11, 13, 19, etc. is recorded in the recording medium 9, and the control circuit 8 controls and manages the operation procedure and operation timing of each means according to the procedure recorded in this recording medium. To do.

The binarized signal measuring means 10 is a binarized signal measuring procedure in which the active period (L level period) and period of the binarized signal added from the binarization circuit 5 are recorded in the recording medium 9. Measure according to. This measurement is realized using various methods.

For example, the binarized signal measuring means 10 has a built-in timepiece mechanism such as a timer, and the binarized signal changes from H (high) to L.
The active period is measured by setting the point at which the signal level switches to the (low) level as a starting point and then measuring the time from the point at which the signal level switches from the L level to the H level. Also, 2
Starting from the point where the digitized signal switches from H level to L level,
Next, the period is measured by measuring the time until the signal level passes through the H level section and switches to the L level again. With this measurement method, as shown in FIG.
The active period of the binarized signal based on the reference AC voltage signal is measured as a value of 2T ₀ , and the period is measured as a value of 2T. Similarly, the active period of the binary signal based on the AC voltage signal to be measured is measured as the value of 2T _X, period is measured as the value of 2T '.

As another measuring method of the active period and the cycle of the binarized signal, for example, a counter circuit is built in the binarized signal measuring means 10 and the binarized signal is changed from H (high) to L.
The active period is measured by counting the time from the point at which the signal level switches to the (low) level as a starting point and then counting the time from the point at which the signal level switches from the L level to the H level.
In addition, the cycle is measured by integrating the time from the point where the binarized signal switches from H level to L level to the point where the signal level next switches to L level after passing the H level section. This is possible, and the active period and cycle of the binarized signal are measured by using an appropriate method.

The data storage means 11 records the data corresponding to the active period and the data corresponding to the period of the binarized signal measured by the binarized signal measuring means 10 on the recording medium 9.
The data is stored in the memory 12 according to the data storage procedure recorded in. In the present embodiment, the data corresponding to the active period of the binarized signal based on the reference AC voltage signal is T
A value of ₀ (1/2 of the measured value) is stored, and a value of T (1/2 of the measured value) is stored as data corresponding to the cycle. Similarly, the value of T _X is stored as the data corresponding to the active period of the binarized signal based on the measured AC voltage signal, and the value of T ′ is stored as the data corresponding to the period.

In the present embodiment, the measured value 1
The value of / 2 is stored as data relating to the active period and the cycle, but this necessary calculation is performed by the binarized signal measuring means 1.
This is performed by the arithmetic unit 17 provided on the output side of 0.
Of course, the data of the measured value (2T ₀ , 2T, 2T _X , 2T ′) is directly stored in the memory 12 as the data relating to the active period and the cycle without performing the calculation processing of 1/2.
May be stored in.

In the present embodiment, the reference AC voltage signal is known.
Voltage value V₀The value of is stored in the data storage means 11 by external input.
And the data storage means 11
This voltage value V₀When is supplied
Shows the voltage value V in the memory 12. ₀To store. of course,
This known voltage value V₀The value of
It may be stored in the memory 12 in advance on the floor)
Yes.

The memory 12 stores the data stored by the data storage means 11 and the data of the arithmetic value calculated by the arithmetic means 13. In addition, in FIG.
Although it is shown by one block, a plurality of memories having different properties and functions are used as necessary in consideration of the type and property of the data to be stored.

As used herein, this memory term is R
It is used in a wide concept including a volatile memory such as AM, a non-volatile memory such as a flash memory, and a hard disk or the like that can store and hold information. For example, it relates to a measurement value of the binarized signal measuring means 10. The data and the data temporarily stored by the calculating means 13 are stored in a volatile memory, and the value of the known voltage value V _{0 and} the value of the threshold voltage calculation value V _{T 0} to be described later are the values of the measured AC voltage signal. Since it is the basic data that is invariant for obtaining the voltage value V _X , it is stored in the nonvolatile memory.

The writing / reading means 19 writes the calculated values calculated by the calculating means 13 (14, 15, 16) to the memory 12 and the data (information) stored in the memory 12 to the calculating means 13. The reading of is driven. That is, the calculation means 13 (14, 15, 16) and the memory 12
The operation of writing and reading the data between them is performed via the writing / reading means 19.

The threshold voltage calculation means 14 is provided with the following calculation formula (1) for obtaining the threshold voltage V _T0 set in the binarization circuit 5.

V _T0 = V ₀ COS {(T ₀ / T) · (π / 2)} ··· (1)

The threshold voltage calculation means 14 reads the data of V ₀ , T ₀ and T from the memory 12 according to the procedure of the threshold voltage calculation recorded in the recording medium 9 and uses the equation (1) to obtain the threshold value. The hold voltage value V _T0 is obtained and stored in the memory 12.

The V _TX calculation means 15 has a phase position A (see FIG. 3) at which the binarized signal generated by the measured AC voltage signal switches from H level to L level, that is,
The following equation (2) for calculating the voltage value V _TX of the reference AC voltage signal at the phase position of {(T _X / T ′) · (π / 2)} is given.

V _TX = V ₀ COS {(T _X / T ') · (π / 2)} ... (2)

The V _TX calculation means 15 reads the data of V ₀ , T _X , and T ′ from the memory 12 according to the procedure of the V _TX calculation recorded on the recording medium 9, and uses the equation (2) to calculate the voltage value. _Calculate V _TX and store it in memory 12.

The V _X calculating means 16 has V ₀ ,
The following formula (3) for calculating the voltage value (peak voltage value) V _X of the measured AC voltage signal from the values of V _T0 and V _TX is given.

V _X = V ₀ (V _T0 / V _TX ) ... (3)

This arithmetic expression is derived as follows. That is, as is clear from FIG.
The ratio of V _T0 and V _TX is equal to the ratio of V _X and V ₀ , and from this proportional relationship, the formula (V _T0 / V _TX ) = (V _X / V ₀ ) holds, and by modifying this formula, The above formula (3) is obtained.

The V _X calculating means 16 reads V ₀ , V from the memory 12 in accordance with the V _X calculating procedure recorded on the recording medium 9.
The data of _{T 0} and V _TX are read, the voltage value V _X of the AC voltage signal to be measured is calculated using the equation (3), and the data signal of this voltage value V _X is added to the input level determination unit 18.

The input level determination unit 18 is provided with a determination standard of the allowable voltage range or the allowable upper limit value of the input AC voltage signal, and the input level determination unit 18 receives the V _X calculator 16.
The calculation value V _X applied from against the criteria, when the operation value V _X is out of the criterion, that is, the abnormality detection when the calculated value V _X exceeds a or allowable upper limit value when out of the allowable voltage range Output a signal.

This abnormality detection signal is supplied to, for example, a drive control circuit (not shown) of the game program of the game machine 2, and when the drive control circuit receives this abnormality detection signal, it prevents the game program from proceeding. Disables gameplay.

Next, the measuring operation of the AC voltage signal to be measured using the voltage measuring device of this embodiment will be briefly described. First, using a reference AC power supply, a reference AC voltage signal having a known voltage value V ₀ is input to the input terminal 7 of the voltage measuring device 1.
The known voltage value V ₀ is input from the outside using an input means such as a keyboard, and the data storage means 11 causes the memory 12 to operate.
To store. As described above, the known voltage value V ₀ may be stored in the memory 12 in advance.

By inputting the reference AC voltage signal from the input terminal 7, a binarized signal based on the reference AC voltage signal is created by the binarizing circuit 5, and the binarized signal is supplied to the voltage measuring circuit 6. Added. The binarized signal measuring means 10 of the voltage measuring circuit 6 has an active period 2T of the binarized signal.
₀ and period 2T are measured. Then, these measured values are converted into a value of 1/2 in the calculation unit 17, and the value T ₀ corresponding to the active period and the value of T corresponding to the period are converted into values with respect to the reference AC voltage signal by the data storage unit 11. Is stored in the memory 12.

As described above, V ₀ , T ₀ ,
After the value of T is stored, the threshold voltage calculation means 14 reads the values of V ₀ , T ₀ , and T from the memory 12 and sets the threshold value in the binarization circuit 5 using the equation (1). The hold voltage V _{T 0} is calculated, and the calculated value is stored in the memory 12. In general, the threshold voltage V _T0 given to the binarization circuit 5 does not always match the design value due to the characteristic variation of the circuit elements forming the binarization circuit 5, and may vary from device to device. Is assumed. In the present embodiment example, as described above,
Since the value of V _T0 is obtained from the values of V ₀ , T ₀ , and T, the threshold voltage V _T0 of each device can be accurately obtained even if the characteristics of the circuit elements of the binarization circuit 5 vary. Is possible.

By storing the values of V ₀ , T ₀ , T, and V _{T0 in} the memory 12 as described above, the system is ready to measure the target voltage V _X of the measured AC voltage signal. When measuring the voltage (AC peak voltage) of the measured AC voltage signal, the measured AC voltage signal of the measurement target is input from the input terminal 7 into the apparatus. Since the commercial power supply voltage is usually measured, the AC voltage signal to be measured is input into the device by inserting the input terminal 7 into the socket of the commercial power supply.

The AC voltage signal to be measured input from the input terminal 7 is guided to the binarizing circuit 5, the binarizing circuit 5 creates a binarized signal, and the created binarized signal is the voltage measuring circuit 6. Is introduced into the binarized signal measuring means 10. Binary signal measuring means 10 as in the case of the reference alternating voltage signal, measuring the active period 2T _X and period 2T 'from the binary signal of the measured AC voltage signal. This measured value is converted into a value of ½ by the calculation unit 17, and the data storage means 11 makes the value of T _X correspond to the active period and the value of T ′ corresponds to the period. Each is stored in the memory 12.

After the values of T _X and T'are stored in the memory 12, the V _TX calculation means 15 outputs V ₀ , T from the memory 12.
The values of _X and T'are read out and V _TX is calculated using the above equation (2).
Is calculated, and the calculated value is stored in the memory 12.

Next, the V _X calculating means 16 reads the values of V ₀ , V _T0 and V _TX from the memory 12 and obtains the target voltage V _X of the measured AC voltage signal by using the equation (3). .

According to the present embodiment, the voltage V of the unknown AC voltage signal to be measured which is unknown by the voltage measuring device 1 having a simple structure.
It is possible to accurately obtain _X. When measuring this voltage,
The reference AC voltage signal does not need to be input each time measurement is performed. For example, if the reference AC voltage signal is input once together with the known voltage value V ₀ at the time of shipment of the device, the reference AC voltage signal is automatically input. The active period and period of the binarized signal with respect to the voltage signal are measured, and the threshold voltage V
_{The value of T 0} is obtained, the values of V ₀ and V _T0 are held in the memory 12, and the system is ready to measure the voltage V _X of the measured AC voltage signal.

Therefore, thereafter, regardless of the place of use, simply by inputting the measured AC voltage signal into the apparatus from the input terminal 7, the voltage value V _{X of the} measured AC voltage signal is measured.
Is automatically calculated, which is very convenient for use.

The present invention is not limited to the above-mentioned embodiments, but can take various embodiments. For example, in the above-described embodiment, the binary signal measuring means 10 measures the active period and the period, and then activates the values T ₀ and T _X corresponding to the active period and the values T and T ′ corresponding to the period. The data regarding the period and the period are stored in the memory 12 and those values are substituted into the equations (1) and (2), but unlike this, the binary signal measuring means 10 measures the active period and the period. After that, the calculation unit 17
The calculated values of T / T ₀ and T _X / T ′ are stored in the memory 12 as data relating to the active period and the cycle, and V _T0 and V _TX are calculated by the above T / T ₀ and T _X / T ′.
T _{0, T} the calculated value of X / T '(1) below, may be obtained _{V T0} and _{V TX} is substituted into equation (2).

Further, in the above embodiment, as shown in FIG. 3, the binarized signal in which the active periods 2T ₀ and 2T _X are set to the L level is created. On the contrary, the active period is set to the H level. You may make it produce | generate the binarization signal which does. Also in this case, V _X can be obtained by the same calculation process.

[0051] Further, in the above embodiment, although sought V _TX phase position of the starting end position A of the active period 2T _X, be determined by the phase position of the end position B of the active period 2T _X (see FIG. 3) Good.

Further, in the present embodiment, the voltage converter 3 and the binarization circuit 5 are the constituent elements of the voltage measuring device 1, but the constituent parts excluding the voltage converter 3 and the binarization circuit 5 are used for voltage measurement. It may be configured as a device.

Further, in the above embodiment, the voltage measuring device 1 is built in the game machine 2 and is configured to measure the power supply voltage input to the game machine 2. However, the voltage measuring device of the present invention is a measuring object. The AC voltage signal may be a sine wave and can be used for voltage measurement of various AC voltage signals having a sine wave.

Further, in the above embodiment, when the measured voltage value V _X of the measured AC voltage signal is out of the allowable voltage range or exceeds the allowable upper limit value, the progress of the game program is prevented from starting. However, the input voltage of the game machine may be cut off by a protection circuit. By cutting off the input voltage in this manner, it is possible to prevent the circuit element from being deteriorated or damaged due to the abnormal AC power supply voltage being applied to the game machine 2.

Further, in the above embodiment, the binarization circuit
Threshold voltage V given to 5_T0AC voltage signal
The voltage that cuts the signal first (the binarized signal changes from H level to L level
The voltage at the phase position at which the
Voltage to turn off (the binary signal is turned from L level to H level
Alternate phase position voltage) is given by the same constant voltage
However, as shown in FIG. 4 (a), V_T0The hysteria
V with a lysis difference _{TH +}And V_TH-Two voltage values
May be given by. In the example of FIG. 4A, the threshold
Hold voltage value V_{TH +}Is the first disconnection point of the AC voltage signal
Binary signal that switches from H level to L level (Fig.
4 (b)) level conversion part is formed and the threshold hole is formed.
Voltage value V_TH-Is L at the cutting position at the end of the AC voltage signal
Level change of the binarized signal that switches from level to H level
It functions as a threshold that forms a replacement portion.

Thus, the threshold voltage V _T0
Is given by two voltages V _{TH +} and V _TH− , the L level period of the created binarized signal is for the left-right symmetric center line (vertical line passing through phase π / 2) m ₀ of the AC voltage signal. It becomes asymmetrical. In this case, the L level period is 2
The dividing line is represented by m ', and there is a ΔT interval between m ₀ and m'. That is, the period obtained by dividing the L level period into 1/2 is larger than the period (1/2 of the active period) T ₀ and T _X corresponding to the active period to be obtained by ΔT.

Therefore, when the threshold voltage has a hysteresis difference as described above, even if the L level period is simply divided into ½, the accurate periods T ₀ and T _X corresponding to the active period are obtained. Cannot be obtained, and another device is required to obtain accurate values of T ₀ and T _X. In consideration of such a situation, FIG.
As shown in (c), a pulse P ₀ is generated at a position where the AC voltage signal cuts zero voltage, the pulse interval T _L between these two pulses P ₀ is measured, and this value T _L is divided into ½. The obtained position is determined as the position of the center line m ₀ of the two-divided active period, and the phase position at which the binarized signal switches from the H level to the L level is used as the starting point, and the time from the starting point position to the center line m ₀ is determined. Then, this is obtained as the periods T ₀ and T _X corresponding to the active period.

Strictly speaking, the pulse P ₀ has a width, and an error may occur in the measurement of the pulse period T _L due to a slight error when the center position of the pulse P ₀ is obtained. Is a minute error within an allowable range and does not cause any particular problem in achieving the object of the present invention.

Of course, the error caused by the width of the pulse P ₀ is eliminated and the period T ₀ corresponding to the active period is precisely defined,
To obtain T _X , the halving position of the pulse period T _L is set as a temporary center position m ₀ , then T _X is obtained as a temporary value as described above, and then the position of m ₀ is centered on the left and right. to _{T X}
The voltage V _TX of the measured AC voltage signal is obtained at the phase positions in the distant periods, and when the values of V _TX of both are the same, the provisional position of m ₀ is determined as an accurate position, and V _{TX of} both If the values of the two do not match, for example, the center line n of the pulse P ₀ on one side is gradually moved in the horizontal direction (the direction in which the phase is increased or decreased) within the range of the pulse width in the direction in which the V _TX values of the two match. , T _L measurement → provisional determination of m ₀ → T _X
Temporarily determined → calculation of V _TX at positions phase position of periods apart T _X to the right and left around the m _0, repeats the operations of, of both V _TX operation value is the the of m ₀ when matching By determining the provisional position as the position of the official m ₀ , accurate T ₀ , T _X that is not affected by the width of the pulse P ₀
Can be measured.

[0060]

According to the present invention, a known reference AC voltage signal is input, and the known voltage value (AC peak voltage value) is input.
By inputting and storing V ₀ , it becomes possible to measure an unknown voltage of the measured AC voltage signal. After that, by simply inputting the AC voltage signal to be measured, the voltage value of the AC voltage signal is measured. It becomes possible to measure automatically. In addition, the configuration of the voltage measuring device can be simplified, and the operation (handling) of voltage measurement is extremely easy, which is very convenient in use.

Further, even if the threshold voltage value for converting an AC voltage signal into a binary signal varies from device to device due to variations in the characteristics of circuit elements, the active binary signal based on the reference AC voltage signal is activated. Since the threshold voltage is accurately obtained based on the measured values of the period and the cycle, and the accurately obtained threshold voltage value is used to finally obtain the voltage value V _X of the measured AC voltage signal, Even if there is a variation in the set value of the threshold voltage of the device, it is possible to accurately obtain the voltage of the measured AC voltage signal.

Further, since the voltage measuring device of the present invention can simplify the device structure as described above, the device cost can be reduced, and the voltage measuring device having excellent measurement performance can be provided at low cost. Is.

[Brief description of drawings]

FIG. 1 is a usage state explanatory diagram showing a state in which a voltage measuring device 1 according to an embodiment of the present invention is incorporated in a game machine 2.

2 is a detailed block diagram of the voltage measurement circuit 6 shown in FIG. 1. FIG.

FIG. 3 is an explanatory diagram showing a relationship between an AC voltage signal and a binarized signal created by the AC voltage signal.

[4] the threshold voltage of two voltages having hysteresis difference V _{TH +,} is an illustration of another embodiment showing an example given V _{T H-.}

[Explanation of symbols]

1 voltage measuring device 3 voltage converter 5 binarizing circuit 10 binarizing signal measuring means 11 data storing means 12 memory 14 threshold voltage calculating means 15 V _TX calculating means 16 V _X calculating means

Claims (5)

(57) [Claims] 1. A disconnection period of an AC voltage waveform disconnected by a threshold voltage value is set as an active period of L (low) or H (high) level, and L (low) and H (high) levels alternate. A binarized signal measuring means for measuring the active period and the cycle in a continuous binarized signal, and a data storage means for storing in the memory the data relating to the active period and the cycle measured by the binarized signal measuring means, Known voltage value V of the reference AC voltage signal
₀ and the data T ₀ corresponding to the active period of the reference AC voltage signal measured by the binarized signal measuring means and the data T corresponding to the period, the threshold voltage V is calculated by using an arithmetic expression given in advance. Threshold voltage calculating means for obtaining _T0 , data T _X corresponding to the active period measured by the binarized signal measuring means with respect to the input AC voltage signal to be measured, data T'corresponding to the period, and Voltage value V of the reference AC voltage signal
The voltage value V _TX of the reference AC voltage signal at the phase position of the switching point between the L (low) level and the H (high) level of the binary signal obtained from the measured AC voltage signal based on ₀
The ratio of the V _TX calculating means for calculating using the previously given arithmetic expression, the ratio of the voltage V _T0 and V _TX is the voltage value V ₀ which voltage V _X and the reference alternating voltage signal of the measured AC voltage signal And a V _X calculating means for obtaining the voltage V _X of the AC voltage signal under measurement based on the respective voltage values of V ₀ , V _T0, and V _TX . 2. An arithmetic expression for _{obtaining the} threshold voltage V _T0 is V _T0 = V ₀ COS {(T ₀ / T) · (π /
Given by 2)}, is given by the calculation equation _V TX _{= V} 0 COS seeking voltage _{V TX {(T X / T} ') · (π / 2)}, calculation formula for obtaining the _{V X} is _V X = V ₀ (V
Voltage measuring device according to claim 1, characterized in that it is given by _T0 / _VTX ). 3. A voltage converter for converting a voltage of an input AC voltage signal into a voltage of a signal processing level on the downstream side, and an AC voltage signal voltage-converted by the voltage converter by a threshold voltage V _T0 . By disconnecting, the disconnection period of this AC voltage waveform is provided as an active period of L (low) or H (high) level, and L (low) and H (high)
3. A voltage measuring device according to claim 1, further comprising: a binarizing circuit that creates a binarizing signal in which the levels of 1 are alternately continuous. 4. An L (low) or H (high) level active period having a disconnection period of an AC voltage waveform that is disconnected by a threshold voltage value, and L (low) and H (high) levels alternate. A binarized signal measurement procedure for measuring the active period and cycle in a continuous binarized signal, a data storage procedure for storing data regarding the measured active period and cycle in a memory, and a known reference AC voltage signal. Data about the active period and cycle based on the voltage value V ₀ and the reference AC voltage signal stored in the memory is read out from the memory, and the threshold voltage V _T0 is calculated using an arithmetic expression given in advance based on the read data. The threshold voltage calculation procedure to be stored in the memory and the above-mentioned 2 for the input measured AC voltage signal. Signal measurement procedures obtained from the measured the voltage value V ₀ and reading from the memory under test AC voltage signal on the basis of the read data of data and the reference AC voltage signal associated with the active time and the period stored in the memory by 2 L (low) level and H of the digitized signal
The procedure of the V _TX calculation for _obtaining the voltage value V _TX of the reference AC voltage signal at the phase position of the switching point of the (high) level by using a predetermined calculation formula and storing it in the memory, and the calculated voltage V Utilizing the fact that the ratio of _T0 and V _TX is equal to the ratio of the voltage V _X of the measured AC voltage signal and the voltage value V ₀ of the reference AC voltage signal, V ₀ and V read from the memory
A recording medium for a voltage measuring device, which stores a V _X calculation procedure for obtaining a voltage V _X of an AC voltage signal to be measured based on each voltage value of _T0 and V _TX . 5. The method according to claim 1, claim 2 or claim 3.
The voltage measuring device of _X Calculated by calculation means
The measured voltage V of the measured AC voltage signal _X Is given in advance
Game play is disabled when it falls outside the criteria
A game machine provided with means for performing.