Dice sensor and dice system

Abstract

An object of the present disclosure is to provide a configuration in which the display on the side of a dice housing can be determined from the directional axis or orientation of gravity detected by an acceleration sensor contained within the dice housing. [Solution] The present disclosure provides a dice sensor comprising an acceleration sensor that detects the direction of gravity, a wireless transmitter that wirelessly transmits the output signal of the acceleration sensor, and a rectangular parallelepiped dice housing that contains the acceleration sensor and the wireless transmitter and has letters displayed on its surface, wherein the directional axes of the letters displayed on the surface of the dice housing are perpendicular to each other on adjacent faces.

Description

[Technical field]

[0001] The present disclosure relates to a dice sensor and a dice system that wirelessly transmit the orientation of the dice. [Background technology]

[0002] In order to visualize the work, attempts have been made to represent the work content by the contents displayed on the sides of a dice case. For example, the work content that a worker is engaged in is displayed on each of the six sides of a dice case, and the worker places the dice so that the side that represents the work content he or she is currently engaged in faces forward.

[0003] On the other hand, one technology for detecting the orientation of a die is a wireless die that incorporates a direction detector and a transmitter inside the die and wirelessly transmits the number rolled on the die (see, for example, Patent Document 1). The direction detector inside the wireless die detects which side is the top face of the wireless die, and the wireless transmitter transmits information about the top face of the wireless die to an external management device. The management device outside the wireless die can determine the number rolled on the wireless die from the information about the top face of the wireless die.

[0004] It is conceivable that this wireless dice technology could be used to make dice for visualizing business operations. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special table 2008-517644 Summary of the Invention [Problem to be solved by the invention]

[0006] With wireless dice, it is enough to know only the number that is rolled, i.e., which number is the top face. For example, by arranging 3-axis acceleration sensors as direction detectors corresponding to the six faces of the wireless dice, it is possible to determine which face is the top face by determining which axis of the 3-axis acceleration sensor detects gravity and which direction of gravity is detected.

[0007] However, when using dice to visualize work, depending on where they are placed, the work content may be displayed on the front, one of the sides, rather than on the top. Figure 1 shows an example of the work content displayed on each of the six sides of a dice, labeled "State 1" to "State 6." Here, the arrows on the X, Y, and Z axes are positive, and the opposite directions are negative. Gravity is in the X-axis direction, and its direction is negative.

[0008] In Figure 1, the front side has the word "STATE 1" displayed in the positive direction on the X-axis, and the right side has the word "STATE 2" displayed in the positive direction on the X-axis. When switching the display on the front side from "STATE 1" shown in Figure 2(A) to "STATE 2" shown in Figure 2(B), the die is rotated 90 degrees to the right when viewed from above. When this is done, the direction of gravity is the X-axis, which is negative, and the axis and direction of gravity detected by the three-axis acceleration sensor do not change, so it is difficult to determine which side is facing forward.

[0009] Therefore, in order to solve the above problem, an object of the present disclosure is to provide a configuration in which the display on the side of a dice housing can be determined from the directional axis or orientation of gravity detected by an acceleration sensor contained within the dice housing. [Means for solving the problem]

[0010] In order to achieve the above object, the dice sensor of the present disclosure imposes a rule on the direction of the characters displayed on the surface of the dice housing. The characters may be written vertically or horizontally. The characters displayed on the surface of the dice housing also include pictograms and symbols with a direction.

[0011] Specifically, the present disclosure provides: An acceleration sensor that detects the direction of gravity; a wireless transmitter for wirelessly transmitting an output signal of the acceleration sensor; a rectangular parallelepiped dice case containing the acceleration sensor and the wireless transmitter and having text printed on its surface; Equipped with A dice sensor characterized in that the directional axes of the characters displayed on the surface of the dice housing are perpendicular to each other on adjacent faces. It is.

[0012] The present disclosure also provides The dice housing is characterized in that the characters displayed on the surfaces of the opposing faces are in opposite directions.

[0013] Furthermore, the dice sensor is configured so that the acceleration sensor contained within the dice housing can easily detect changes in the directional axis of gravity or changes in orientation.

[0014] Specifically, the present disclosure provides: the acceleration sensor and the wireless transmitter are housed in a rectangular parallelepiped internal housing; The internal housing is not fixed to the internal space of the dice housing, and the rotation range is limited.

[0015] The present disclosure also provides The internal space is characterized in that it has a chamfered rectangular parallelepiped shape.

[0016] In the dice system, the management device determines the character displayed by the dice sensor.

[0017] Specifically, the present disclosure provides: Any one of the above dice sensors and a management device that wirelessly receives an output signal from the acceleration sensor from the wireless transmitter, corresponds the output signal to characters displayed on each face of the dice sensor, and determines which characters are displayed facing upward on the side of the dice sensor; A dice system comprising: It is.

[0018] The above disclosed inventions can be combined to the greatest extent possible. Effect of the Invention

[0019] According to the present disclosure, the display on the side of the dice housing can be determined from the directional axis or orientation of gravity detected by an acceleration sensor contained within the dice housing. [Brief description of the drawings]

[0020] [Figure 1] FIG. 13 shows a representation of an associated dice sensor. [Diagram 2] FIG. 13 is a diagram showing the operation of switching the display of an associated dice sensor. [Diagram 3] FIG. 13 is a diagram showing an example of a display of a dice sensor of the present disclosure. [Figure 4] FIG. 11 is a diagram showing an example of the operation of switching the display of the dice sensor of the present disclosure. [Diagram 5] FIG. 11 is a diagram showing an example of the operation of switching the display of the dice sensor of the present disclosure. [Figure 6] FIG. 2 is a diagram showing an example of a development view of a dice sensor according to the present disclosure. [Figure 7] FIG. 13 is a diagram showing an example of a display of a dice sensor of the present disclosure. [Figure 8] FIG. 11 is a diagram showing an example of the operation of switching the display of the dice sensor of the present disclosure. [Figure 9] FIG. 11 is a diagram showing an example of the operation of switching the display of the dice sensor of the present disclosure. [Figure 10] FIG. 11 is a diagram showing an example of the operation of switching the display of the dice sensor of the present disclosure. [Figure 11] FIG. 2 is a diagram showing an example of a development view of a dice sensor according to the present disclosure. [Figure 12] FIG. 13 is a diagram illustrating an example of the use of a dice sensor of the present disclosure. [Figure 13]FIG. 13 is a diagram illustrating an example of the use of a dice sensor of the present disclosure. [Figure 14] FIG. 13 is a diagram illustrating an example of the use of a dice sensor of the present disclosure. [Figure 15] 1A and 1B are diagrams illustrating an example of the structure of a dice sensor according to the present disclosure. [Figure 16] FIG. 2 is a diagram showing an example of an internal housing of the dice sensor of the present disclosure. [Figure 17] FIG. 2 is a diagram showing an example of an internal space of the dice sensor of the present disclosure. [Figure 18] FIG. 2 is a diagram showing an example of an internal space of the dice sensor of the present disclosure. [Figure 19] 1A to 1C are diagrams illustrating examples of the shape of the internal space of a dice sensor according to the present disclosure. [Figure 20] 1A to 1C are diagrams illustrating examples of the shape of the internal space of a dice sensor according to the present disclosure. [Figure 21] 1A to 1C are diagrams illustrating examples of the shape of the internal space of a dice sensor according to the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the present disclosure is not limited to the embodiments shown below. These implementation examples are merely illustrative, and the present disclosure can be implemented in various forms with various modifications and improvements based on the knowledge of those skilled in the art. Note that components with the same reference numerals in this specification and drawings are assumed to indicate the same components.

[0022] (Embodiment 1) In this embodiment, a dice sensor is described that includes an acceleration sensor that detects and outputs the directional axis and direction of gravity, a wireless transmitter that wirelessly transmits the output signal of the acceleration sensor, and a rectangular parallelepiped dice housing that contains the acceleration sensor and the wireless transmitter and has characters displayed on its surface. The rectangular parallelepiped shape also includes a cube shape. In this embodiment, the dice sensor has adjacent faces, and the directional axes of the characters displayed on the surface of the dice housing are perpendicular to each other. An example of the display of the dice sensor of this embodiment is shown in FIG. 3. An example of the operation of switching the display of the side of the dice sensor of this embodiment is shown in FIG. 4 and FIG. 5.

[0023] In Figure 3, the letters displayed on the three visible sides and arrows showing the direction of those letters are shown, while the letters displayed on the three hidden sides behind are mirror images, and the arrows showing the direction of those letters are shown with dotted arrows. The directional axes of the letters displayed on the surface of the dice case on adjacent sides are perpendicular to each other, and the orientation of the letters displayed on the surface of the dice case on opposing sides is the same.

[0024] The sides consist of the front, left side, right side, and back. On the front side in Figure 3, the characters are oriented in the X-axis direction and are positive, on the right side, the characters are oriented in the Z-axis direction and are positive, on the left side, the characters are oriented in the Z-axis direction and are positive, on the back, the characters are oriented in the X-axis direction and are negative, on the top, the characters are oriented in the Y-axis direction and are negative, on the bottom, the characters are oriented in the Y-axis direction and are negative.

[0025] The acceleration sensor detects the direction of gravity in each of three orthogonal axial directions. For example, a three-axis acceleration sensor detects the positive or negative direction of the arrow in the direction of the arrow in "State 1" in Figure 3, the positive or negative direction of the arrow in the direction of the arrow in "State 5," and the positive or negative direction of the arrow in the direction of the arrow in "State 2."

[0026] The acceleration sensor outputs the detected information as an output signal. The wireless transmitter wirelessly transmits the output signal. In a management device (not shown) outside the dice sensor, the three directional axis acceleration sensors that detect gravity and the combinations of the directions of gravity detected by the three directional axis acceleration sensors are associated with the characters displayed on each side of the dice sensor, and the management device can determine the characters displayed facing upward on the side of the dice sensor depending on which directional axis acceleration sensor detected which direction of gravity.

[0027] Consider placing the dice sensor so that the "State 1" facing up on the front in FIG. 3 becomes "State 2" facing up. In FIG. 4(A), the "State 1" display faces up on the front. At this time, the acceleration sensor on the directional axis of the arrow of "State 1" detects gravity and detects that the direction of gravity is negative. First, as shown in FIG. 4(B), the dice sensor is rotated 90 degrees to the right when viewed from above. In FIG. 4(B), the "State 2" display faces right on the front. Next, as shown in FIG. 4(C), the dice sensor is turned 90 degrees to the left when viewed from the front. Then, in FIG. 4(C), the "State 2" display faces up. The acceleration sensor on the directional axis of the arrow of "State 2" detects gravity and detects that the direction of gravity is negative. The acceleration sensors on the other directional axes do not detect the direction of gravity.

[0028] Consider placing the dice sensor so that the "State 1" facing up in front in FIG. 3 becomes "State 3" facing up. In FIG. 5(A), the "State 1" display faces up in front. At this time, the acceleration sensor of the direction axis of the arrow of "State 1" detects gravity and detects that the direction of gravity is negative. First, as shown in FIG. 5(B), the dice sensor is rotated 90 degrees to the right when viewed from above. In FIG. 5(B), the "State 2" display faces right sideways in front. Next, as shown in FIG. 5(C), the dice sensor is rotated 90 degrees to the right when viewed from above. Then, in FIG. 5(C), the "State 3" display faces up. The acceleration sensor of the direction axis of the arrow of "State 1" detects gravity and detects that the direction of gravity is negative. The acceleration sensors of the other direction axes do not detect the direction of gravity.

[0029] The arrows for "State 1" and "State 3" have the same directional axis and orientation, so when the dice sensor is placed so that "State 3" is displayed facing up, the direction of gravity detected by the acceleration sensor for the directional axis of "State 1" is negative, just like "State 1." Acceleration sensors for other directional axes do not detect the direction of gravity. Therefore, if different characters are displayed on adjacent sides and the same characters are displayed on opposing sides, the management device can determine the three types of characters displayed facing up on the sides of the dice sensor. As a result, the dice system of this embodiment is effective for three types of state displays.

[0030] When a worker wishes to represent "STATUS 1" using the dice sensor of this embodiment, he places the dice sensor on a side with "STATUS 1" facing up. The management device wirelessly receives from the wireless transmitter that the acceleration sensor on the directional axis of the arrow of "STATUS 1" has detected a negative gravity direction, and determines that the worker is representing "STATUS 1". The worker can select from three types of characters. On the back of the side displaying "STATUS 1", "STATUS 3" has the same characters and is in the same orientation as "STATUS 1", so the worker may represent either side. The same applies to the other sides.

[0031] An example of the development of the dice sensor of this embodiment is shown in FIG. 6. This is an example of the business contents displayed on the surface of the dice housing to visualize the business. Different characters are orthogonalized on adjacent sides, and the same characters are displayed in the same direction on opposing sides. For example, three types of characters, "operation," "standby," and "setup," as shown in FIG. 6, are displayed. In this case, if a character is displayed facing upwards on any of the four sides, that character represents the business contents.

[0032] (Embodiment 2) In this embodiment, a dice sensor is described that includes an acceleration sensor that detects and outputs the directional axis and direction of gravity, a wireless transmitter that wirelessly transmits the output signal of the acceleration sensor, and a rectangular parallelepiped dice housing that contains the acceleration sensor and the wireless transmitter and has characters displayed on its surface. The rectangular parallelepiped shape also includes a cube shape. In this embodiment, the dice sensor has adjacent faces in which the directional axes of the characters displayed on the surface of the dice housing are perpendicular to each other, and the characters displayed on the surface of the dice housing are opposite to each other on opposing faces. An example of the display of the dice sensor of this embodiment is shown in FIG. 7. An example of the operation of switching the display of the side of the dice sensor of this embodiment is shown in FIG. 8, FIG. 9, and FIG. 10.

[0033] In Figure 7, the letters displayed on the three visible sides and arrows showing the direction of those letters are shown, while the letters displayed on the three hidden sides behind are mirror images, and the arrows showing the direction of those letters are shown with dotted arrows. The directional axes of the letters displayed on the surface of the dice case between adjacent sides are perpendicular, and the directions of the letters displayed on the surface of the dice case between opposing sides are opposite.

[0034] The sides consist of the front, left side, right side, and back. On the front side in Figure 7, the characters are oriented in the X-axis direction and are positive, on the right side, the characters are oriented in the Z-axis direction and are positive, on the left side, the characters are oriented in the Z-axis direction and are positive, on the back, the characters are oriented in the X-axis direction and are negative, on the top, the characters are oriented in the Y-axis direction and are negative, on the bottom, the characters are oriented in the Y-axis direction and are negative.

[0035] The acceleration sensor detects the direction of gravity in each of three orthogonal axial directions. For example, the three-axis acceleration sensor detects the positive or negative direction of the arrow on the axis of the arrow in "State 1" in Figure 7, the positive or negative direction of the arrow on the axis of the arrow in "State 5," and the positive or negative direction of the arrow on the axis of the arrow in "State 2."

[0036] The acceleration sensor outputs the detected information as an output signal. The wireless transmitter wirelessly transmits the output signal. In a management device (not shown) outside the dice sensor, the three directional axis acceleration sensors that detect gravity and the combinations of the directions of gravity detected by the three directional axis acceleration sensors are associated with the characters displayed on each side of the dice sensor, and the management device can determine the characters displayed facing upward on the side of the dice sensor depending on which directional axis acceleration sensor detected which direction of gravity.

[0037] Consider placing the dice sensor so that the "State 1" facing up on the front in FIG. 7 becomes "State 2" facing up. In FIG. 8(A), the "State 1" display faces up on the front. At this time, the acceleration sensor on the directional axis of the arrow of "State 1" detects gravity and detects that the direction of gravity is negative. First, as shown in FIG. 8(B), the dice sensor is rotated 90 degrees to the right when viewed from above. In FIG. 8(B), the "State 2" display faces right. Next, as shown in FIG. 8(C), the dice sensor is turned 90 degrees to the left when viewed from the front. Then, in FIG. 8(C), the "State 2" display faces up. The acceleration sensor on the directional axis of the arrow of "State 2" detects gravity and detects that the direction of gravity is negative. The acceleration sensors on the other directional axes do not detect the direction of gravity.

[0038] Consider placing the dice sensor so that the "State 1" facing up on the front in FIG. 7 becomes the "State 3" facing up. In FIG. 9(A), the "State 1" is facing up on the front. At this time, the acceleration sensor of the direction axis of the arrow of "State 1" detects gravity and detects that the direction of gravity is negative. First, as shown in FIG. 9(B), the dice sensor is rotated 90 degrees to the right when viewed from above. In FIG. 9(B), the "State 2" is facing right on the front. Next, as shown in FIG. 9(C), the dice sensor is rotated 90 degrees to the right when viewed from above. Then, in FIG. 9(C), the "State 3" is facing down. FIG. 10(C) is the same as FIG. 9(C). As shown in FIG. 10(C) to (D), the sensor is turned 90 degrees to the right when viewed from the front. Furthermore, as shown in FIG. 10(E), the sensor is turned 90 degrees to the right when viewed from the front. The acceleration sensor on the axis indicated by the arrow in "State 1" detects gravity and detects that the direction of gravity is positive. The acceleration sensors on the other axes do not detect the direction of gravity.

[0039] Since the arrows for "State 1" and "State 3" have the same directional axis but point in opposite directions, when the dice sensor is placed so that "State 3" faces upward, the direction of gravity detected by the acceleration sensor for the directional axis of "State 1" will be positive, opposite to "State 1". Acceleration sensors for the other directional axes do not detect the direction of gravity. Therefore, if different characters are displayed on each of the six sides, the management device can determine the six types of characters displayed facing upward on the side of the dice sensor. As a result, the dice system of this embodiment is effective for six types of state displays.

[0040] When a worker wants to use the dice sensor of this embodiment to represent "STATUS 1," he places the dice sensor on the side with "STATUS 1" facing up. The management device wirelessly receives from the wireless transmitter that the acceleration sensor on the directional axis of the arrow of "STATUS 1" has detected the negative direction of gravity, and determines that the worker is representing "STATUS 1." The worker can select from six different characters.

[0041] An example of the development view of the dice sensor of this embodiment is shown in FIG. 11. This is an example of the business contents displayed on the surface of the dice housing to visualize the business. Six different characters are displayed on each side. The directional axis of the characters is perpendicular to adjacent sides, and the characters are displayed in the opposite direction on opposing sides. For example, six types of characters are displayed, "operation", "standby", "setup", "maintenance", "stop", and "breakdown", as shown in FIG. 11. In this case, if a character is displayed facing upwards on any of the four sides, that character represents the business contents.

[0042] Examples of the use of the dice sensor of this embodiment are shown in Figs. 12, 13, and 14. Figs. 12, 13, and 14 are the dice sensor of the development view shown in Fig. 11. In Fig. 12, the word "operation" is displayed facing up on the front side. At this time, the word "standby" is displayed facing backward on the right side, the word "maintenance" is displayed facing downward on the back side, and the word "stop" is displayed facing forward on the left side. In other words, only "operation" is displayed facing up on the four sides. Of the three-axis acceleration sensors, only the acceleration sensor of the vertical axis detects gravity. If the acceleration sensor of the vertical axis detects the direction of gravity, the management device can determine which characters are displayed facing up. The word "operation" may be on any of the right side, back, and left side, not on the front. In Fig. 13, only the word "standby" is displayed facing up, and in Fig. 14, only the word "maintenance" is displayed facing up.

[0043] In all the embodiments, the directional axes of the characters displayed on the surface of the dice housing are orthogonal to each other between adjacent faces. In the first embodiment, the orientation of the characters displayed on the surface of the dice housing is the same between the three opposing pairs of faces, so that three types of characters can be determined. If the orientation of the characters displayed on the surface of the dice housing is the same between the two opposing pairs of faces, and the orientation of the characters displayed on the surface of the dice housing is opposite between the opposing pair of faces, then four types of characters can be determined. If the orientation of the characters displayed on the surface of the dice housing is the same between the opposing pair of faces, and the orientation of the characters displayed on the surface of the dice housing is opposite between the opposing pair of faces, then five types of characters can be determined. If the orientation of the characters displayed on the surface of the dice housing is opposite between the three opposing pairs of faces, then six types of characters can be determined.

[0044] As described above, by applying the technology of the present disclosure, it is possible to determine the display on the side of the dice housing from the directional axis or orientation of gravity detected by the acceleration sensor contained within the dice housing.

[0045] (Embodiment 3) In this embodiment, a dice sensor will be described that is the same as the dice sensor described in embodiment 1 or embodiment 2, except that the acceleration sensor and the wireless transmitter are housed in a rectangular parallelepiped internal housing, the internal housing is not fixed to the internal space of the dice housing, and the rotation range is limited. The rectangular parallelepiped shape also includes a cube shape. The structure of the dice sensor is shown in FIG. 15, an example of the internal housing in which the acceleration sensor and the wireless transmitter are housed is shown in FIG. 16, and an example of the internal space of the dice housing that contains the internal housing is shown in FIG. 17.

[0046] In Fig. 15, an internal space 30 is provided inside the dice housing 20, and the internal housing 10 is disposed in the internal space 30. The internal housing 10 is not fixed to the internal space 30, and its rotation range is limited. The internal housing 10 in Fig. 16 is a rectangular parallelepiped, with each side having dimensions A, B, and C. The internal space 30 in Fig. 17 is a rectangular parallelepiped, with each side having dimensions A', B', and C'.

[0047] For the inner housing 10 to move freely without being fixed in the inner space 30, for example, Equation (1) is a condition. Further, for the rotation range of the inner housing 10 to be restricted in the inner space 30, for example, Equations (2) to (7) are conditions. For both conditions to be satisfied, Equation (8) is a condition. However, when A’ < B’, Equation (2) is applied; when A’ > B’, Equation (3) is applied; when B’ < C’, Equation (4) is applied; when B’ > C’, Equation (5) is applied; when C’ < A’, Equation (6) is applied; and when C’ > A’, Equation (7) is applied. [Number] [Number]

[0048] When the inner housing 10 is not fixed in the inner space 30 and moves freely, even when the die housing 20 gently topples over, the inner housing 10 topples over more violently than the die housing 20. When the inner housing 10 topples over violently, the acceleration sensor housed in the inner housing 10 vibrates violently, and the direction axis and change in the direction of gravity can be reliably detected.

[0049] On the other hand, if the inner housing 10 moves freely and as a result, the positional relationship between the die housing 20 and the acceleration sensor fluctuates, the acceleration sensor will not be able to correctly detect the direction axis and direction of gravity. If the rotation range of the inner housing 10 in the inner space 30 is restricted, the acceleration sensor housed in the inner housing 10 can accurately detect the change in the direction axis and direction of gravity.

[0050] (Embodiment 4) In this embodiment, a die sensor described in Embodiment 3 will be described, which is a die sensor in which the inner space of the die housing in which the inner housing is disposed has a chamfered rectangular parallelepiped shape. The rectangular parallelepiped shape includes a cubic shape. The structure of the inner space of the die sensor is shown in FIG. 18, the shape of the inner space in cross-section 1 of FIG. 18 is shown in FIG. 19, the shape of the inner space in cross-section 2 is shown in FIG. 20, and the shape of the inner space in cross-section 3 is shown in FIG. 21.

[0051] The internal space has a chamfered rectangular parallelepiped shape, and the four corners of the cross section may be chamfered in a straight line, or may be chamfered in an arc shape. Figures 19 to 21 show an example of a chamfered C-shape, where the four corners are chamfered at a distance r from each vertex. In order for the internal housing 10 to move freely without being fixed in the internal space 30, for example, the condition is Equation (9) instead of Equation (1). The same applies to R-shape chamfered at a distance r from each vertex.

number

number

[0052] If the internal space 30 does not have chamfers, the internal housing 10 will stick to the corners of the internal space 30, and the acceleration sensor may not function even if the dice sensor is turned over. If the internal space 30 has a chamfered rectangular parallelepiped shape, the internal housing 10 can be prevented from sticking to the corners of the internal space 30, so that if the internal housing 10 is turned over violently, the acceleration sensor housed in the internal housing 10 will vibrate violently, and changes in the axis and direction of gravity can be reliably detected. [Industrial Applicability]

[0053] The dice sensor and the dice system of the present disclosure are applied to information communication. [Explanation of symbols]

[0054] 10: Internal housing 20: Dice cabinet 30: Interior space

Claims

1. An acceleration sensor that detects the direction of gravity; a wireless transmitter for wirelessly transmitting an output signal of the acceleration sensor; a rectangular parallelepiped dice case containing the acceleration sensor and the wireless transmitter and having text printed on its surface; Equipped with The directional axes of the characters displayed on the surfaces of the dice housings of adjacent faces are perpendicular to each other; the acceleration sensor and the wireless transmitter are housed in a rectangular parallelepiped internal housing; A dice sensor in which the internal housing is not fixed to the internal space of the dice housing and the rotation range is limited.

2. 2. The dice sensor according to claim 1, wherein the directions of the characters displayed on the surfaces of the dice housings are opposite to each other on the opposing faces.

3. 3. The dice sensor according to claim 1, wherein the internal space has a chamfered rectangular parallelepiped shape.

4. An acceleration sensor that detects the direction of gravity; a wireless transmitter for wirelessly transmitting an output signal of the acceleration sensor; and a rectangular parallelepiped dice housing containing the acceleration sensor and the wireless transmitter and having characters printed on a surface thereof, a dice sensor in which the directional axes of characters displayed on the surface of the dice housing are perpendicular to each other on adjacent surfaces; a management device that wirelessly receives an output signal from the acceleration sensor from the wireless transmitter, corresponds the output signal to characters displayed on each face of the dice sensor, and determines which characters are displayed facing upward on the side of the dice sensor; A dice system comprising:

5. A dice system as described in Claim 4, characterized in that the orientation of the letters displayed on the surface of the dice housing is opposite on opposing faces of the dice sensors.

Images