JP3531673B2 - Movement detection sensor and movement detection device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to furniture, works of art,
The present invention relates to a movement detection sensor and a device which are fixed to a detection object such as a valuables box, an animal, or a human body and detect the movement or stillness of the detection object.

[0002]

2. Description of the Related Art There are accelerometers and seismometers as devices for detecting the movement or motion of an object to be detected. These are used to detect the attitude of the aircraft and the vibration of the ground surface, and are relatively large-sized devices with high measurement accuracy. On the other hand, there is known an anti-theft sensor that detects that a hand-held safe or the like is taken away. This type of sensor detects the movement of the object to be detected by detecting the relative positional relationship between the object to which the sensor is fixed and the shelf or wall surface that supports it. .

[0003]

However, the above technique has the following problems. The former has a complicated structure and is expensive, and mounting on the object to be detected is troublesome. On the other hand, the latter detects the movement of the detected object based on the relative relationship between the detected object and another object (shelf or wall surface), so there is a problem that if the mounting position or mounting method is wrong, the detection cannot be performed. There is a problem that it cannot be applied to a detected object that is constantly moving or whose posture is frequently changed. An object of the present invention is to provide a movement detection sensor and a device which can be manufactured in a very small size and can be easily attached to an arbitrary position of an object to be detected. For example, furniture, works of art, A detection sensor that can be attached to a valuable box to detect changes in their posture or movement, or to be attached to an animal or human body to detect that they continue their original movements. The challenge is to obtain a device.

[0004]

In order to achieve the above-mentioned object, the first invention is to form a sphere or regular polyhedron formed by a partition wall made of a non-magnetic material, and a space inside the vacant space. A movement detecting sensor is provided, which includes an enclosed magnetized regular polyhedron rolling element and a magnetic sensor arranged on the partition wall. A second invention includes the movement detection sensor of the first invention, an amplification circuit that amplifies an output signal of the magnetic sensor of the movement detection sensor, and a transmission circuit that wirelessly transmits the amplified detection signal. , A movement detection device.

The movement detection sensor 8 of the first invention is a sphere or regular polyhedron space 9 partitioned by a partition wall 13 made of a non-magnetic material, and a magnetized regular polyhedron rolling element enclosed in this space 9. 7 and a magnetic sensor 6 arranged on the partition wall 13. The shape of the void 9 may be cylindrical or hourglass-shaped when detecting a two-dimensional movement, but is basically spherical or regular polyhedral, and for example, a hemispherical recess is provided. A spherical void 9 is formed by pasting together the plastic parts. Practical space 9 has a size of several meters
It is about m. The magnetic sensor 6 can be mounted by forming the through hole 5 in one location on the peripheral wall of the cavity 9. By forming the space 9 into a spherical shape or a regular polyhedron shape, there is an advantage that the mounting direction of the sensor is not limited, and there is an advantage that even if the posture of the detected object changes, it cannot be undetected. The rolling element 7 is a so-called permanent magnet and has a regular polyhedron shape. When both the void 9 and the rolling element 7 are spherical, it is possible to detect minute movements and changes in the posture of the object to be detected.
When any one of the rolling elements 7 and the rolling elements 7 has a regular polyhedron shape, a threshold value can be set for the detection accuracy. That is, the movement detection sensor 8 of the first aspect of the invention detects the relative movement of the rolling element 7 in the void 9 with the magnetic sensor 6, but when the void 9 and the rolling element 7 are spherical. Means that the relative position of the rolling element 7 changes even if the void 9 is slightly tilted or moved, whereas when the void 9 or the rolling element 7 is a regular polyhedron,
When the tilt or movement of the void 9 is slight, the rolling element 7 does not roll, so the relative position within the void 9 does not change, and the tilt or movement of the void 9 exceeds a certain threshold value. First, the rolling element 7 rolls or slides for the first time. Therefore, the threshold value (sensitivity) of the sensor can be appropriately set by appropriately selecting the number of faces of the polyhedron.

The movement detecting device 14 of the second invention comprises the movement detecting sensor 8 having the above-mentioned structure, an amplifier circuit 11 for amplifying the output signal of the magnetic sensor 6 of the movement detecting sensor 8, and the amplified detection signal by radio. And a transmission circuit 12 for transmitting. A mobile phone or a PHS transmission circuit can be used as the transmission circuit 12. Since these transmission circuits are integrated into an IC, the transmission circuit 12 is very small, and the detection signal of a public wireless communication system is used. Transmission is possible. Further, for example, if the transmission circuit used in the wireless handset of the telephone is used, the detection signals of the plurality of movement detection sensors 8 are
It is also possible to transmit the book through a public communication line.

According to a third aspect of the present invention, a void formed by a partition wall made of a non-magnetic material, a magnetized rolling element enclosed in the void, and a sponge filled in the void and surrounding the rolling element by abutting. A magnetic sensor disposed on the partition wall,
It is used as a movement detection sensor.

According to the third aspect of the invention, the vibration of the rolling element surrounded by the sponge is detected by the magnetic sensor to detect the vibration of the object to which the movement detecting sensor is attached. Since it is composed of four small parts such as the partition wall, rolling element, sponge, and magnetic sensor, a movement detection sensor having a simple structure and compact size can be obtained.

A fourth invention is a movement detecting sensor of the third invention, a differentiating circuit for differentiating the output signal of the magnetic sensor of the moving detecting sensor, an amplifier circuit for amplifying the output signal of the differentiating circuit, and the amplified signal. And a transmission circuit for wirelessly transmitting the detection signal.

According to the fourth invention, the vibration of the rolling element detected by the magnetic sensor is differentiated by the differentiating circuit to calculate the acceleration,
The calculated acceleration is transmitted by the transmission circuit. As a result, since the acceleration can be monitored in real time at a remote place apart from the movement detection device, it is possible to quickly confirm breakage or damage due to a collision or a drop of the detected object.

A fifth aspect of the invention is a movement detecting device comprising the movement detecting device of the second or fourth aspect of the invention and a microcomputer for storing and judging the detection signal.

According to the fifth aspect of the invention, since the detection data is stored in the microcomputer, the stored data can be reproduced after the detection of the object to be detected is completed. As a result, for example, the history of the cared person's movement state can be recorded, which facilitates health management.

A sixth invention comprises a movement detecting device of the second, fourth or fifth invention, and a radio wave receiver which is mounted on the movement detecting device to receive a radio wave, and the radio wave receiver is a predetermined one from the movement detecting device. The movement detection device receives a radio wave from a radio wave transmitter located at a distance and starts operation when the electric field strength of the received radio wave becomes smaller than a predetermined value.

According to the sixth aspect of the invention, when the movement detecting device is separated from the radio wave transmitter carried by a person by a predetermined distance or more, the movement detecting device starts operating. Thus, for example, it is possible to determine whether the cash box to which the movement detection device is attached is moving from the cash transport vehicle and is still, so that the cash box can be prevented from being stolen.

A seventh invention comprises the movement detecting device of the second, fourth or fifth invention, a temperature sensor for detecting the temperature of the object to be detected, and a mounting tool for mounting the movement detecting device and the temperature sensor on the object to be detected. It is provided as a movement detection device.

According to the seventh aspect of the invention, the movement detecting device and the temperature sensor are attached to the object to be detected by the mounting tool. Since the movement status and temperature of the detected body can be monitored one by one in a remote place, it is possible to prevent accidents while the care receiver is wandering around or taking a bath.

[0017]

1 is a sectional view showing a first embodiment of a movement detecting sensor of the present invention. The base plate 1 and the cover plate 2 each having a shape obtained by dividing a regular hexahedron into two are plastic molded products.
Hemispherical recesses 3 and 4 are provided on the joint surface,
The substrate 1 is provided with a through hole 5 communicating with the bottom surface of the recess 3. The through hole 5 has a shape that matches the outer diameter of the magnetic sensor 6, and the magnetic sensor 6 is fitted into the through hole 5 with its detection end facing the recess 3. The rolling element 7 is a spherical body of a permanent magnet, and the rolling element 7 is bonded to the cover plate 2 by placing the rolling element 7 in the recesses 3 and 4 so that the rolling element 7 becomes 2
It is enclosed in a cavity 9 formed by two recesses 3, 4. The sensor 6 has a size of about 5 to 10 mm square. The movement detection sensor 8 formed as described above can be easily attached by adhering it to the detection target by adhering an adhesive tape or the like to the outer surface of the lid plate 2. Also,
The board 1 and the cover plate 2 can be provided with a locking portion of a cord or a belt, and the cord or the belt can be attached to the detection target. An alarm that attaches the movement detection sensor 8 to furniture, arts, valuables boxes, etc. that are usually stationary, monitors the output of the magnetic sensor 6, and issues an alarm when the output changes. If the device is connected to the magnetic sensor 6, it is possible to detect theft of the furniture or the art work. 2 and 3 show
It is the figure which showed the Example of the movement detection apparatus 14 of this invention. The void 9 of the movement detection sensor 8 in the apparatus of this embodiment has a regular polyhedron shape, and is formed on the coupling surface between the substrate 1 and the lid plate 2 by the same method as in the first embodiment. The rolling element 7 is enclosed in the void 9 and the magnetic sensor 6 is mounted on the substrate 1 side of the void 9 in the same structure as in the first embodiment. A differentiating circuit 10, an amplifying circuit 11, and a transmitting circuit 12 for a mobile phone are connected to the IC,
These converted circuits are mounted on the substrate 1. A timer and a threshold value setting circuit are mounted on the substrate 1 as needed.

The movement detecting device 1 having the above-mentioned structure
The operation and effect of No. 4 will be described. First, an example in which the movement detection device 14 is applied to prevent theft of valuable items such as furniture, art objects, and jewelry boxes will be described with reference to FIG. The adhesive tape 21 adhered to the outer surface of the movement detection device 14, the movement detection device 14 is attached to the valuables 20 by the strap or the belt locking portion on the substrate 1 or the lid plate 2, and the magnetic sensor transmitted from the transmission circuit 12. 6
Monitor the output of. When the valuables 20 move from the stationary state to the moving state, the rolling element 7 moves in the space 9, so that the distance between the magnetic sensor 6 and the rolling element 7 changes and the output voltage of the magnetic sensor 6 changes. When the output voltage fluctuates, the transmitter circuit 12 is operated to call a preset telephone, so that the theft of the valuable 20 can be monitored at a remote place.

Next, an example of maintenance of the cash transport vehicle 22 shown in FIG. 5 will be described. The movement detection device 14 to which the radio wave receiver 23 is attached is attached to the cash box 24 on the bed. On the other hand, the driver 25 or the assistant of the driver's cab has the radio transmitter 26.
When the distance A between the radio wave transmitter 26 and the radio wave receiver 23 is less than or equal to the maximum length L of the cash transport vehicle 22, the radio wave receiver 23
The movement detection device 14 is not operated so that the electric field strength of the radio wave received from the radio wave transmitter 26 is determined to be a predetermined value or more and the vibration of the cash transport vehicle 22 is not detected. When the distance A is longer than the maximum length L, that is, when the electric field strength is below a predetermined value, the movement detection device 14 starts to operate. Then, the output voltage of the magnetic sensor 6 is transmitted from the transmission circuit 12, and the cash box 2
It is determined whether or not 4 is moving. As a result, the cash box 24
Since it is possible to determine whether or not the vehicle is moving at a position away from the driver 25 or the assistant by a maximum length L or more, the theft of the cash box 24 can be prevented.

Next, an example of preventing accidents of a cared person will be described. As shown in FIG. 6, the care monitor 30 includes a belt 31 as a wearing tool for mounting the case 31 having the waterproof detection structure and the movement detection device 14 and the like and the care monitor 30 on the care receiver.
Have two. At a predetermined position of the housing 31, a temperature sensor 33 such as a thermistor that directly contacts the arm or leg of the care-receiver to measure the body temperature is provided. Also, the housing 3
A microcomputer 34 for storing and determining data output from the movement detection device 14 and the temperature sensor 33 is installed in the unit 1. Further, it is provided with an output port 35 for outputting the data stored in the microcomputer 34 to an external printer or the like. The care receiver wears the care monitor 30 with the belt 32 by bringing the temperature sensor 33 into contact with the arm or leg. Case 31
The movement detecting device 14 inside detects the moving state of the care receiver, and the temperature sensor 33 detects the body temperature of the care receiver.
For example, when the movement is not detected and the microcomputer 34 determines that the body temperature becomes 30 degrees Celsius or less, the transmission circuit 12 of the movement detection device 14 automatically notifies the plurality of contact points stored in advance. ·Warning. Further, in association with the timer mounted on the substrate 1, if the transmission circuit 12 is operated when the output of the movement detection device 14 does not change for a certain period of time, it can be used for detecting the physical abnormality of the care receiver. can do. As a result, even if the cared person can take a bath 24 hours a day, he / she can always monitor the cared person, so that the cared person's accident can be prevented. Further, the movement data and the temperature data accumulated for a predetermined period can be printed out from the output port 35, and the history of the health condition of the cared person can be recorded, which facilitates health management.

The movement detecting device 14 described with reference to FIGS.
Is the partition wall 13, rolling element 7, magnetic sensor 6, differentiating circuit 1
0, the amplifier circuit 11, and the transmission circuit 12, which are composed of small parts and have a simple and compact structure, they can be easily mounted at any position on the object to be detected. Further, since the transmission circuit 12 is for a mobile phone, the positions of the valuables 20, the cash box 24, and the cared person can be quickly specified by reversely detecting the transmission position, and accident prevention is facilitated. .

Next, FIG. 7 is a sectional view showing the construction of the second embodiment of the movement detecting sensor. The movement detection sensor 40 is mounted on the rolling element 7 at a substantially central portion of the space 9 of the movement detection sensor 8 described with reference to FIG.
The viscoelastic body 4 such as a sponge in the space 9.
4 is filled and formed until it abuts on the rolling element 7. Partition 1
When 3 vibrates in the direction of the arrow shown, the rolling element 7 vibrates in the direction of the arrow in the viscoelastic body 44, and the vibration is detected by the magnetic sensor 6. FIG. 8 shows the movement detection sensor 4 of FIG.
It is a block diagram of the movement detection apparatus 41 using 0, the differential circuit 10, the amplification circuit 11, and the transmission circuit 12 for mobile phones are connected to the output side of the magnetic sensor 6, and these circuits are integrated. Are mounted on the substrate 1. The output voltage of the magnetic sensor 6 is differentiated by the differentiating circuit 10 to calculate the acceleration having the component in the arrow direction as the main component, and the calculated acceleration is transmitted from the transmitting circuit 12 via the amplifying circuit 11. FIG. 9 shows an acceleration detecting device 42 as a movement detecting device. The acceleration detection device 42 has three movement detection devices 41 arranged in three directions X, Y, and Z. The outputs of the amplifier circuits 11 of the three movement detecting devices 41x, 41y, 41z are connected to a microcomputer 34 which stores and determines acceleration data. Further, when the microcomputer 34 determines to transmit the obtained acceleration data to the remote monitoring place, the transmission circuit 12 for transmitting the acceleration data is provided. Further, an output port 35 for outputting the stored acceleration data to an external printer or the like is provided.

The effects of the acceleration detecting device 42 having the above structure will be described. For example, the acceleration detecting device 42 is attached to a predetermined position of a packing box 43 for carrying an unnecessarily upside-down or fragile item as shown in FIG. Acceleration detection device 42
Detects the acceleration in the X, Y, and Z directions and stores the detected acceleration in the microcomputer 34, the packaging box 43 or the contents in the packaging box 43 is damaged when the packaging box 43 arrives at the consignee. Output port 3 from the microcomputer 34
The acceleration data is printed out via 5. Then, when the acceleration equal to or higher than the threshold value is output, it is found that the packaging box 43 has fallen, collided, or violated upside down in the process of transportation. Further, since the microcomputer 34 has a clock and can specify the time when the acceleration equal to or more than the threshold value occurs, the location of the damage liability can be easily specified. Further, since the acceleration detecting device 42 has a small number of parts and a simple structure and is formed compactly, it can be easily mounted at an arbitrary position on the object to be detected. In addition, the movement detection sensor 41 or the acceleration detection device 42 as described above is shown in FIG.
It can also be used in place of the movement detection device 14 described in 5 and 6.

In this embodiment, the spherical space 9 of the movement detecting sensor 8 is formed by filling the viscoelastic body 44, but the viscoelastic body 44 evenly supports the periphery of the rolling element 7. If you satisfy the constraint that you are
The shape of does not have to be spherical.

According to the present invention, the first movement detection is performed by the void formed by the partition wall made of a non-magnetic material, the magnetized rolling element enclosed in the void, and the magnetic sensor arranged in the partition wall. It constitutes a sensor. As a result, the movement of the detected body to which the movement detecting sensor is attached is detected by detecting the distance from the rolling element moving in the space by the magnetic sensor. When the movement of the detected object is detected, the preset telephone is called, so that the theft of valuables or the accident of the cared person can be prevented. Further, a second movement detection sensor is configured by filling a viscoelastic body in a space where the rolling element is positioned substantially in the center until it comes into contact with the rolling element. This allows
By detecting the vibration of the rolling element with a magnetic sensor, the second
To detect the vibration of the detection object to which the movement detection sensor is attached. For example, by mounting a second movement detection sensor on a shipping box or the like, differentiating the detected vibration and inspecting the stored acceleration after shipping, the location and time of damage when the shipping box is damaged Etc. can be easily specified. Furthermore, since the first and second movement detection sensors are composed of small parts such as partition walls, rolling elements, magnetic sensors, viscoelastic bodies, etc., they have a simple structure and can be easily mounted at any position on the detected body. A compact movement detection sensor capable of performing

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a movement detection sensor.

FIG. 2 is a sectional view showing a first embodiment of the movement detecting device.

FIG. 3 is a block diagram of an embodiment of a movement detection device.

FIG. 4 is an explanatory diagram when the movement detection device is applied to an object to be detected at a fixed position.

FIG. 5 is an explanatory diagram when the movement detection device is applied to a cash transport vehicle.

FIG. 6 is an explanatory diagram when the movement detection device is applied to a care monitor.

FIG. 7 is an explanatory diagram of a second embodiment of the movement detection sensor.

FIG. 8 is an explanatory diagram of an acceleration sensor using the movement detection sensor according to the second embodiment.

FIG. 9 is an explanatory diagram of an acceleration detection device including a plurality of acceleration sensors.

FIG. 10 is an explanatory diagram when the acceleration detection device is applied to a shipping box for transportation.

[Explanation of symbols]

1 ... Substrate, 2 ... Lid plate, 3, 4 ... Recess, 5 ... Through hole, 6 ...
Magnetic sensor, 7 ... rolling element, 8, 40 ... movement detection sensor,
9 ... Vacancy, 10 ... Differentiation circuit, 11 ... Amplification circuit, 12 ... Transmission circuit, 13 ... Partition, 14 ... Movement detection device, 20 ... Valuables, 21 ... Adhesive tape, 22 ... Cash transport vehicle, 23 ... Radio wave reception Machine, 24 ... Cash box, 25 ... Driver, 26 ... Radio transmitter, A ... Distance, L ... Maximum length, 30 ... Care monitor, 31 ...
Case, 32 ... Belt, 33 ... Temperature sensor, 34 ... Microcomputer, 35 ... Output port, 41 ... Acceleration sensor, 42 ... Acceleration detection device, 43 ... Packaging box, 44 ... Viscoelastic body.

Front page continuation (51) Int.Cl. ⁷ Identification code FI G08C 17/00 H01H 35/14 A // H01H 35/14 F G08C 17/00 ZA (58) Fields investigated (Int.Cl. ⁷ , DB name) G01P 13/00 G01P 15/00

Claims (7)

(57) [Claims] 1. A partition wall (13) made of a non-magnetic material,
Sphere or regular polyhedron cavity (9) and magnetized regular polyhedron rolling element enclosed in this cavity (9)
A movement detection sensor comprising (7) and a magnetic sensor (6) arranged on the partition wall (13). 2. The movement detection sensor (8) according to claim 1, an amplification circuit (11) for amplifying an output signal of a magnetic sensor of the movement detection sensor, and a transmission circuit for wirelessly transmitting the amplified detection signal. (12) A movement detecting device comprising: 3. A void (9) formed by a partition wall (13) made of a non-magnetic material, a magnetized rolling element (7) enclosed in the void (9), and a void (9). A movement detection sensor, comprising a sponge (44) filled in the outer circumference of the rolling element (7) so as to abut and surround the rolling element (7), and a magnetic sensor (6) arranged in the partition wall (13). 4. The movement detection sensor (40) according to claim 3.
And a differentiation circuit (10) that differentiates the output signal of the magnetic sensor (6) of the movement detection sensor (40), and an amplification circuit (11) that amplifies the output signal of the differentiation circuit (10).
And a transmission circuit (12) that wirelessly transmits the amplified detection signal. 5. A movement detection device (1) according to claim 2 or 4.
4, 41), and a movement detection device comprising a microcomputer (34) for storing and judging the detection signal. 6. The movement detecting device (14, 41) according to claim 2, 4 or 5, and a radio wave receiver (23) mounted on the movement detecting device (14, 41) to receive radio waves, The radio receiver (23) receives radio waves from a radio transmitter (26) located at a predetermined distance from the movement detection device (14, 41),
A movement detection device that starts operation when the electric field strength of the received radio wave becomes smaller than a predetermined value. 7. A movement detecting device (14, 41) according to claim 2, 4 or 5, a temperature sensor (33) for detecting the temperature of an object to be detected, a movement detecting device (14, 41) and a temperature sensor. A movement detection device comprising: a mounting tool (32) for mounting the (33) on a detection object.