JP2739724B2 - Specimen color comparison judge - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biochemical test (urine sugar,
This is a color comparison / determination device for a test substance used in blood glucose, urobilin, etc.), for example, a test paper impregnated with urine (reagent part) determines various colors depending on the sugar content in urine to determine the significance of color development. The present invention relates to a color comparison / judgment device for a test object used for performing a color comparison. 2. Description of the Related Art Conventionally, when determining the significance of coloration of a test paper in a biochemical test of, for example, urine sugar or the like, usually, a color comparison determination method visually checked by an operator and electronic components such as a reflection sensor are used. And a urinary glucose meter (biochemical measuring instrument) that automatically displays the coloration result. FIG. 4 is a perspective view showing a conventional test object color comparison / judgment device (a visual color judgment system). The color comparison / determination device has a structure in which a sheet-like comparison color sample 73 is attached to the outer peripheral surface of a cylindrical case 72 having a cap 71. This cylindrical case 7
A test stick 74 (for example, a test sheet 75 impregnated with a reagent impregnated at the tip of a resin sheet) 74 for urine sugar test is housed in the inside of 2. In the urine sugar test, the cap 71 is removed, the test stick 74 is taken out from the cylindrical case 72, and the test paper 75 is impregnated with urine. Due to the impregnation of urine, the test paper 75 exhibits various color reactions depending on the sugar content in the urine. Here, the colored test paper 75 is compared with each color of the comparative color sample portion 73 of the cylindrical case 72 to determine the significance of the color. That is, in the color sample section 73, a plurality of various graded colors (various colors such as negative and positive colors) 73a that change according to the sugar (glucose) content in urine are arranged. Therefore, the color of the test paper 75 is compared with the various graded colors 73a of the color sampler, and the same color (approximate color) is found to find the significance of the color, that is, the amount of sugar content in urine (negative,
Positive). On the other hand, a biochemical measuring device, for example, a urinary sugar meter,
A light-emitting element (light-emitting diode) projects light onto the color test paper, and the light reflected by the test paper is received by a light-receiving element (phototransistor). Then, the urine sugar level is automatically digitally displayed based on the received color reaction light quantity. [0005] The test object color comparison / determination device described above is a test stick storage case (cylindrical case).
Is merely a sheet-like color sample stuck on the outer surface of the sheet. Therefore, in the color comparison, while holding the test stick impregnated with urine, approach the color test paper at the tip to the color sample section, and compare and determine the color state while shifting to various stages of colors. Become. In other words, during this color comparison operation,
The urine-impregnated test strips must be moved so that they do not touch the color sample head, and must be moved in close proximity, and the operator must use special nerves for this delicate approach movement. In addition, there is a disadvantage that the positional alignment between the test paper and the color sample is likely to be shifted, and it is difficult to accurately determine a subtle color difference. Also, a biochemical measurement device (eg, urine sugar meter)
In this method, the amount of color reaction light on the test paper is received by the reflection sensor, and the urine sugar level is automatically displayed according to the amount of received light. The necessity of judging negative or positive by referring to (urine sugar level) in a comparison table can be omitted. However, this urinary sugar meter
Since the reflection sensor is used, there is a disadvantage that it is not possible to accurately grasp the delicate coloration state of the test paper without being expensive. According to the present invention, a step color, that is, a reference color, is visually compared with the color of the test paper, and the significance of the specified step color (a color similar to the color test paper) is displayed on a display. Accordingly, it is an object of the present invention to provide a color comparison / judgment device for a test object which can accurately perform color comparison and can automatically display a color result. [0007] Means for Solving the Problems] coloration comparative decision unit of the test of this invention have a plurality of reference colors to be compared with the color to be converted, to the color to be converted, Relatively movable
And the ability to color chart, the relative shift of the color chart
When the color to be converted reaches the position closest to one of the reference colors on the color chart due to movement
Operation means operated by the user and operation of the operation means
Electrical signal generating means for generating an electrical signal in response to
Means for positioning the color chart with respect to the electric signal generating means so that the electric signal generating means can generate an electric signal corresponding to the approximation. In this test object color comparison / determination device , the color to be converted, for example, the color of a color test paper, and a plurality of reference colors of a color chart are visually compared by relative movement and should be converted. One color of reference color on color chart to color
Generated but reaches a position closest, Ri by the operation that by the confirmation operation means such as a switch, an electrical signal that generates an electric signal corresponding to the position, corresponding to the colors on the color chart to the nearest I do. FIG. 3 is a perspective view showing a specific embodiment of a test article color comparison / judgment device according to the present invention. The color comparison / determination device includes a fixed disk 1 having a color test sample mounting table 3;
A comparative color sample section 2 rotatably provided on the fixed disk 1. The fixed disk 1 is a flat disk with a hollow mounting portion 11 protruding at the center in the plane, and a rectangular flat color test sample mounting table 3 protruding outward at the periphery. It protrudes. A connecting portion between the color test sample mounting table 3 and the fixed disk 1 is formed with a curved stepped portion 31 along substantially a half circumference of the fixed disk 1. That is, it is the stepped portion 31 configured because the color test sample mounting table 3 is thicker than the fixed disk 1. The curved stepped portion 31 exerts a rotation guide function of a comparative color sample portion 2 described later. Further, a cutting line portion (notch line portion) 32 having a flat U-shape is formed in the plane of the color test sample mounting table 3 toward the hollow mounting portion 11, and is surrounded by the cutting line portion 32. The portion, that is, the tongue-shaped portion, is used as a test stick mounting portion (test material mounting base portion) 33. A test stick (a test sheet 41 in which a reagent is impregnated at the tip of a resin sheet) 4 is placed on the test stick placing portion 33. The base end of the test stick mounting portion 33 is continuous with the color test sample mounting table 3, and the front end extending into the fixed disk 1 is separated from the fixed disk 1, and the base end is a stopping point. It is set to have a spring property that can be tilted, that is, an elastic restoring force. The hollow mounting portion 11 has a cylindrical shape having a low height, and has an electronic circuit portion described later incorporated therein, and a surface portion (upper surface).
A display unit (display) 51, a power switch 52, a decision switch 53, a memory switch 54, and a start switch 55. The color sample section 2 for comparison is formed in a donut-shaped flat plate disk 22 having a fitting hole 21 in the plane, and is fitted to the hollow mounting portion 11 and rotatably provided. A plurality of window holes 23 spaced apart from each other at regular intervals, and stepped colors 24 are arranged in circles corresponding to the window holes 23 on the outer periphery of the flat disk 22. The window hole 23 is located at a position corresponding to the color test paper 41 of the test stick 4 in a state where the comparative color sample portion 2 is fitted to the hollow mounting portion 11, and the test paper 41 is projected from the window hole 23. Is set to Further, in each of the step colors 24, for example, a color that changes according to the sugar content in urine, that is, a color that means positive or negative, is arranged in a stepwise circular arrangement. FIG. 4 is a block diagram showing an example of a circuit configuration of the test sample color comparison / determination device. Display 51, power switch 52, confirm switch 53, memory switch 5
4 and the start switch 55
(Central Processing Unit) 56, RAM (Random Access Memory) 5
7. A ROM (read only memory) 58, a timer 59 and a battery low detector 60 are built in the hollow mounting portion 11. The ROM 58 stores a control program to be executed by the CPU 56, which will be described later, and the significance of the various colors 24. The meaning of the various stage colors 24, that is, the numbers of the plurality of stage colors 24 and the urine sugar value (numerical value) corresponding to the stage colors 24 are stored in the table. RAM5
Reference numeral 7 denotes a nonvolatile memory, which is a measurement result value (urine sugar value)
Is stored in the memory. The timer 59 measures the time required for executing the color comparison judgment operation by inputting the start switch 55, and notifies the arrival of the predetermined time by sounding the buzzer 62. Further, the battery low detector 60 determines the presence or absence of the power supply battery, and causes the display 51 to display a case where the battery is exhausted. Further, an enter switch 53 executes the color comparison between the color of the test paper 41 and the graded color 24 visually by the operator, and decides the identity (same color) between the test paper 41 and the graded color 24. At this point, the switch is pressed by the operator in order to identify the stepped color 24 at the rotated position. The position detector 61
When the color sample section 2 for comparison rotates, the rotation position of the step color 24 is detected, for example, a micro switch. That is,
A projection is provided on the back side of each stage color 24 (not shown), and when the projection passes the reference position due to the rotational movement of each stage color 24, the microswitch counts the rotational position of the stage color 24. , When the rotation has been stopped, the stopped stage color 24 is specified. The position detector 61 replaces the microswitch system with, for example, attaching a code to the step color 24 and optically reading the step color (code number) that rotates.
A method of specifying the stopped stage color 24 may be used. The memory switch 54 reads the result value (urine sugar value) measured by the operator in the past from the RAM 57,
This is a switch for displaying on the display unit 51. Said C
When the position determination switch 53 is pressed and the stage color 24 is specified by the position detector 61, the PU 56 reads out the result value (urine sugar value) corresponding to the specified stage color 24 from the ROM 58, and displays the result value on the display 51. And display the result value
M57 has a function to store it. FIG. 1 and FIG. 2 are flowcharts showing the specific processing operation of the test sample color comparison / determination unit. When the operator turns on the power switch 52 [Step (hereinafter, referred to as "ST" 1) 1], the comparator is initialized (ST2), and it is determined whether or not the battery voltage is present, that is, whether or not the battery is low (ST3). ). If the battery is exhausted, the determination in ST3 becomes YES, a low battery is displayed on the display 51 (ST6), and the measurement becomes impossible (ST6).
7). If there is a battery voltage, the measurement of ST3 is NO
Then, the process proceeds to the next ST4, where it is determined whether or not the memory switch 54 has been pressed. That is, in order for the operator to call and display past measurement result values, the memory switch 54
It is determined whether or not is pressed. When the operator desires measurement, he does not press the memory switch 54 but presses the start switch 55. Therefore, the determination in ST4 is NO,
If the determination in ST5 is YES, the timer 59 is set to 0 by turning on the start switch 55 (ST8), and thereafter, the time measurement is started and the time measurement is displayed on the display 51 (S8).
T11). That is, the urine is attached to the test paper 41, and the operation time (60 seconds) for wiping off excess urine of the test paper 41 is measured. During that time, the elapsed time is updated every second by ST9 and ST10, and the elapsed time is continuously displayed (ST11). If 60 seconds have elapsed since the start of the timer, the determination in ST12 becomes YES, and the test paper 41
Is notified on the test stick mounting table 33 (ST14). In this state, ST13
Determines whether 120 seconds have elapsed since the start of timekeeping. In other words, the test paper 41 impregnated with urine waits for the time required for the color reaction. If 120 seconds have elapsed, the determination in ST13 is YES, and the color test paper 4
A buzzer alert is issued to the effect that a color comparison operation between 1 and the stage color 24 should be performed (ST15). Here, the operator rotates the sample color part 2 for comparison, and the test paper 4 coming out of the window hole 13.
1 and a step color 2 arranged corresponding to each window hole 13
4 is visually compared. That is, the color sample section 2 for comparison
Are sequentially rotated to select the step color 24 that is the closest to the color test paper 41. When the step color 24 of the same color is determined, the rotation of the comparison color sample unit 2 is stopped, and the determination switch 53 is pressed. To determine the homochromatic step color 24,
When the operator rotates the comparative color sample unit 2, the position detector (micro switch) 61 specifies (detects) the step color 24 to which the color shifts due to the rotation. In ST16, it is determined whether or not the enter switch 53 has been pressed.
If 3 is pressed, the determination in ST16 becomes YES, and the step color 24 detected by the position detector 61 is specified (ST17). Then, the result value (urine sugar value) corresponding to the specific stage color 24 is read from the table of the ROM 58 (ST18), and the read result value is stored in the RAM.
57 (ST19). At the same time, the result value is digitally displayed on the display 51 (ST20). After a plurality of measurements are completed by the same operation, if the operator wants to check the result of the past measurement, he or she presses the memory switch 54. Thereby, the determination in ST4 becomes YES, and the result values measured in the past and stored in the RAM 57 in numerical order can be displayed on the display unit 51. That is, in the first pressing operation of the memory switch 54, the result value stored first (n = 1) is specified (ST21), and after the first result value is displayed on the display 51 (ST22). When the memory switch 54 is pressed again, the determination in ST23 for determining whether the next memory has been selected is YES, and the second (n = n +
The result value of 1) is specified (ST24) and displayed on the display 51. Thereafter, similarly, each time the memory switch 54 is sequentially and continuously pressed, the past result values are sequentially displayed, and in the embodiment, the past 20 result values (data values) can be displayed. Therefore, after the twentieth result value is displayed, the memory calling operation ends (ST2).
5). According to the present invention, a color chart having a plurality of reference colors is provided, and the color of the test object to be converted and the color of the color chart are visually compared by relative movement.
Is, by operating the confirmation operation means corresponding to the color most similar,
According to this operation, the closest approximation on the color chart
It is possible to generate an electric signal of a color that has been adjusted and display, for example, an electric signal corresponding to the color approximating the color, so that the troublesome work of the color comparison operation as in the conventional color comparison judgment device can be omitted. In addition, the work of confirming the significance of the step colors using a numerical table is eliminated. In addition, since the color comparison judgment is performed by the operator's visual observation, not by a reflection sensor as in a biochemical measurement device (urinary glucose meter), delicate color judgment can be performed accurately, and inexpensive and operable. It has an excellent effect of achieving the object of the invention, such as being able to provide a good comparison / determination device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart for explaining a processing operation of a color comparison / judgment unit for an example test object. FIG. 2 is a flowchart, together with FIG. 1, for explaining the processing operation of a color comparison / judgment unit for an example test object. FIG. 3 is a perspective view showing a color comparison / judgment device of an example test object. FIG. 4 is a block diagram showing a circuit configuration of a color comparison / determination unit for the test sample. FIG. 5 is a perspective view showing a conventional color comparison / determination device. [Explanation of Reference Codes] 2 Color sample section for comparison 3 Color test sample stage 24 Stage color 41 Test paper 51 Display 53 Confirmation switch

Claims (1)

(57) [Claims] Have a transformed plurality of reference colors to be compared with the color to be, with respect to the color to be converted, and movable relative color chart, the relative movement of the color chart, the color to be converted , A confirming operation hand that is operated when a position closest to one of the reference colors on the color chart is visually observed.
And generating an electrical signal in response to operation of the confirmation operation means.
An electric signal generating means, and a means for positioning a color chart with respect to the electric signal generating means so that the electric signal generating means can generate an electric signal corresponding to the approximation. vessel. 2. A case, a display unit provided on the casing, and means for mounting a color chart on the case, visually, the deciding operation means that is operated when the color of the color chart and reagent test paper is closest, the Generates an electric signal in response to the operation of the confirmation operation means
When the color chart is positioned with respect to the electric signal generating means and the electric signal generating means, and the color on the reagent test paper approximates the color on the color chart,
A color comparison / judgment device for a test object, comprising: means for allowing an electric signal generating means to generate an electric signal; and means for displaying a value corresponding to the electric signal. 3. The color chart has a plurality of color samples to be compared with the color of the reagent test strip, the electric signal generating means includes at least one electric switch for providing a signal representing the approximation, and the at least one electric switch. 3. A test article according to claim 2, further comprising: means for coupling a switch to display means, wherein the coupling means causes the display means to display the value in accordance with a change in the state of the at least one switch. Color comparison judge. 4. A case, a display unit provided on the case, means for mounting the color chart on the case so that the sample is positioned close to various colors on the color chart, and A test object having means for indicating whether the color is the closest to the display, and means for coupling the indicating means to the display means, and driving the display means to display a color on a color chart closest to the color of the sample Color comparison judge. 5. A case in which the color of the chemical specimen is measured after contact with the test specimen, the case including a color chart and a means for allowing the specimen to be positioned adjacent to the color chart; and after contact with the test specimen, and means for mounting a color chart including color which changes color in case, color and of the visual comparison of the color and the chart of discolored specimens
When the color on the chart and the color of the specimen
The most approximate chart in response to the operation of the confirmation operation means to be made and the confirmation operation means
An electric signal generating means for generating an electric signal corresponding to the above color ; a display; and a means for coupling the electric signal generating means to the display and providing a read output related to the color of the test object having changed color. Meter. 6. A color reference unit that supplies an electrical signal representing a comparison result between the color sample and the plurality of reference colors, the plurality of reference colors including a plurality of reference colors, each reference color being visually comparable to the color sample; Means for generating an individual electrical signal corresponding to each of the plurality of reference colors, and wherein the electrical signal generating means, when the electrical signal is closest to the color of the salar sample, the electrical signal associated with the reference color determined by the operator. An operator operating means for generating one of the following.