JPH0244001B2 - 2JIGENTEKIDEETABUNPUNOCHUSHINICHIKENSHUTSUSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detection position for detecting the center position of two-dimensionally distributed load, light, and other data distributions.

Conventionally, in order to determine the surface load, center (center of gravity) position of an optical image, total sum, etc., the two-dimensional data distribution is detected using a large number of sensors arranged in a matrix, and the required measurement is applied to the detection signal. Generally, arithmetic processing is performed to obtain a value, but the arithmetic processing is extremely complicated, and the processing equipment for it is inevitably very expensive.

The present invention solves these problems and uses a device that facilitates LS conversion by having a repeating structure of simple circuits, and performs simple arithmetic processing on the detection signal to determine the center position of a two-dimensional distribution. The present invention aims to provide a device for detecting the center position of a two-dimensional data distribution that makes it possible to determine the center position of a two-dimensional data distribution.

In order to achieve the above object, a two-dimensional data distribution center position detection device of the present invention detects a two-dimensional data distribution of k rows and k columns obtained by a large number of sensors arranged in a matrix. The processing circuit includes a data detector, a processing circuit having a summing amplifier corresponding to the data, and an arithmetic circuit connected to the processing circuit.
In each row and column of the dimensional data distribution, each data is input to a corresponding summing amplifier, the output of each summing amplifier is input to an adjacent summing amplifier, and each summing amplifier is configured to input 1/1 of the sum of its inputs. 2
This processing circuit is configured to output
It is constructed by connecting an arithmetic circuit that determines the center position of the two-dimensional data distribution based on the respective sums of the outputs of the summing amplifiers of the columns at both ends and the rows at both ends.

According to the detection device of the present invention, from a two-dimensional data distribution obtained by a large number of sensors arranged in a matrix, two-dimensional data distribution can be obtained by simple calculation processing using a simple processing circuit and an arithmetic circuit. It is possible to determine the center (center of gravity) position and total sum of a dimensional data distribution, and in particular, since the above processing circuit is configured with a simple repeating pattern using a large number of summing amplifiers, it is extremely easy to implement it into an LSI. The circuit can be constructed easily and inexpensively.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In FIG. A device that is equipped with a large number of sensors 2, 2, etc. depending on the detection target, and that can extract data in a similar matrix by arranging the sensors in a two-dimensional matrix of k rows and k columns, or in a similar matrix. Constructed as. As these sensors 2, for example, a sensor that outputs a signal proportional to the magnitude of the applied load as an analog quantity can be used, but a sensor that outputs as a digital quantity can also be used.
In either case, the processing circuits etc. connected below may be suitable for the output format.

The processing circuit connected to the data detector 1 is
It processes the two-dimensional data distribution given by the data detector 1 in the _X direction and Y direction, and in _{FIG .} Although the processing circuit of FIG.

The processing circuit is equipped with a large number of summing amplifiers 3, 3, etc. that output 1/2 of the sum of inputs, corresponding to each sensor or data, and has sensors arranged in a matrix or a two-dimensional array. In each row and each column of the data distribution, each data is input to the corresponding summing amplifier, and the output of each summing amplifier is connected to the input of the adjacent summing amplifiers on both sides. However, the summing amplifiers at both ends in each row and each column are connected so that their outputs are input to only one summing amplifier, since the adjacent summing amplifier exists only on one side.

The output of the summing amplifier connected in this way is
In the case of the figure, the output number from the summing amplifier at both ends above is
Therefore, _{each row of the summing amplifier outputs the output signals x 11 , x 1k , x 21 , x 2k , respectively} .
..., x _k1 , x _kk will be obtained. In addition, the above processing circuit performs similar processing in the Y direction, and outputs signals from the summing amplifiers at both ends of each column.
y ₁₁ , y _k1 , y ₁₂ , y _k2 , ..., y _1k , y _kk are obtained.

The arithmetic circuit connected to the next stage of the above processing circuit is
As shown in FIG. 3, the output signals x ₁₁ to x _k1 and x _1k to x _kk of the summing amplifiers at both ends of each row are individually added to obtain their summation, that is, _k 〓 ⁿ⁼¹ x _o1 and _k 〓 It is equipped with adders 4 and 4 for calculating _n ⁼¹ A divider 7 is connected to the divider 5 and the subtracter 6. The divider 7 divides the output signal B of the subtracter 6 by the output signal of the adder 5, and the output signal of this divider 7 is the center (center of gravity) of a two-dimensional data distribution such as a load The output signal _A from the adder 5 represents the sum S of the output signals of the respective sensors 2.

It goes without saying that the arithmetic circuit described above is equipped with a circuit that performs similar arithmetic operations on the output signals y ₁₁ to y _1k and y _k1 to y _kk from the summing amplifiers at both ends of each column. It is equipped with two adders that add their respective sums _k 〓 ^m=1 y _1n and _k 〓 ^m=1 y _kn , and performs mutual addition and calculation of the outputs of these adders. and a subtracter, and a divider for determining the Y coordinate _gy of the center (center of gravity) of the two-dimensional data distribution is connected to these adders and subtracters.

In the detection device having the above configuration, when a certain pattern of two-dimensional data distribution is detected by the sensor in the data detector 1, the signal is input to the next stage processing circuit, and from this processing circuit, the output signal x ₁₁ ~x _k1 , x _1k ~x _kk , y ₁₁ ~y _1k , y _k1 ~y _kk
is output. These output signals are each input to an arithmetic circuit, and based on their sum obtained by an adder, the coordinate Wx in the x direction and the coordinate Wy in the y direction are calculated for m and n, Wx=k-2m+1/ The center (center of gravity) position of the two-dimensional data distribution when setting k+1 Wy=k-2n+1/k+1, etc. It is required as.

FIG. 4 shows another embodiment of the above processing circuit. The summing amplifier 3 in the above embodiment is of a non-inverting type, but in this embodiment, the summing amplifier 11 is a
An inverting type device that inverts and outputs the signal 2 is used, and accordingly, a signal from the sensor is inputted via an inverting amplifier 12 to the summing amplifier 11 in the pars sequence. Note that processing circuits for outputs obtained from sensors in other rows and sensors in each column are similarly configured. Furthermore, the output signal from the processing circuit is calculated by a calculation circuit similar to that shown in FIG.
It is necessary to configure the calculation of A to perform the calculation of A/B in the case of the number of corners.

As is clear from the above detailed description, according to the present invention, the center position of a two-dimensional data distribution can be detected using an extremely simple device.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a data detector in an embodiment of the present invention, FIG. 2 is a partial configuration diagram of a processing circuit connected to the next stage, and FIG. 3 is a diagram of an arithmetic circuit connected to the next stage of the processing circuit. FIG. 4 is a partial configuration diagram of another embodiment of the above processing circuit. 1...Data detector, 2...Sensor, 3, 11
...Summing amplifier.

Claims (1)

[Claims] 1. A data detector that detects a two-dimensional data distribution of k rows and k columns obtained by a large number of sensors arranged in a matrix, a processing circuit having a summing amplifier corresponding to the above data, and its processing. and an arithmetic circuit connected to the circuit, the processing circuit comprising:
In each row and column of the matrix-like two-dimensional data distribution, each data is input to a corresponding summing amplifier, the output of each summing amplifier is input to an adjacent summing amplifier, and each summing amplifier is connected to its input. Configure it as outputting 1/2 of the sum,
The center of the two-dimensional data distribution is characterized in that the processing circuit is connected to an arithmetic circuit that calculates the center position of the two-dimensional data distribution based on the respective sums of the outputs of the summing amplifiers of the columns at both ends and the rows at both ends. Position detection device.