JP2006090960A - Physical quantity measuring recording device and physical quantity variation history recording system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a physical quantity measuring recording device for measuring and recording physical quantities of the articles nearby and the like, during transportation and storage, and to provide a physical quantity variation history recording system. <P>SOLUTION: The physical quantity variation history recording system 10 is a system for recording the state (history of variation in physical quantity around goods 12) of goods 12 stored in a transport vehicle, a warehouse, etc. and includes a physical quantity measuring recording device 14, enveloped or attached to the goods 12 and an administration device 16 for administering the physical quantity measuring recording device 14. Here, the physical quantity variation around the goods 12 means, for example, shock (impulse) and temperature variations added to the goods 12, irradiated light quantity, wind velocity, water velocity, etc. The physical quantity measuring recording device 14 comprises a power generation means (for example, piezo-electric element and thermocouple, photovoltaic element, etc.) generating electromotive force when sensing the variation of physical quantity, and an IC tag for recording the magnitude of the physical quantity (electromotive force) by electric power supplied from a power generation means. The administration device 16 is provided with a time information transmission device for writing time information on the IC tag. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a physical quantity measurement recording apparatus and a physical quantity change history recording system, and more particularly to a physical quantity measurement recording apparatus and a physical quantity change history recording system that measure and record changes in physical quantities in the surrounding environment.

  In recent years, a technique using a piezoelectric element as a power source in a system for identifying a product or the like using RFID or the like has been disclosed. For example, Patent Document 1 discloses an item identifier using a piezoelectric power generation device that generates electric power by flexural vibration of a piezoelectric ceramic element as a power source for an item identifier such as an IC card or a wireless tag used in an RFID system. . Patent Document 2 discloses a wireless IC card that uses a piezoelectric element as a power source for an IC chip.

Patent Document 3 counts the number of times of impact (number of times of hitting or catching a ball or the number of steps) applied to a ball sports equipment (racquet, sports shoes, pedometer) using a piezoelectric element. Technology is disclosed.
JP 2004-94488 A JP 2000-31226 A (claim 29, paragraph 0230, etc.) JP 2000-346863 A

  By the way, a product may be damaged by a strong shock during transportation. In addition, the quality of the product may be deteriorated due to insufficient temperature control in the transport vehicle or warehouse where the product is stored, or exposure to strong light. Conventionally, when such products are transported or stored, strict packaging and temperature management must be performed. However, the purchaser of the product (for example, a retail store or a consumer) I could not know if it was transported or stored.

  According to the above-mentioned Patent Document 3, it is possible to count the number of times the impact is applied by the piezoelectric element, but it is impossible to know the magnitude and direction of the impact, the ambient temperature, the amount of light, and the like.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a physical quantity measurement recording device and a physical quantity change history recording system for measuring and recording a physical quantity around a product or the like during transportation or storage. And

  In order to achieve the above object, a physical quantity measuring and recording apparatus according to claim 1 includes a power generation means that generates an electromotive force when a change in physical quantity is detected, and a physical quantity that measures the physical quantity using the power supplied from the power generation means. It is characterized by comprising measuring means and recording means for recording the measured physical quantity by the electric power supplied from the power generating means.

  According to the physical quantity measurement recording apparatus according to claim 1, without using a power source such as a battery, the environment in the surroundings of the apparatus (for example, a transport vehicle or a warehouse in which a package with the physical quantity measurement recording apparatus is stored) is stored. Changes in physical quantities can be monitored over a long period of time.

  A physical quantity measurement recording apparatus according to a second aspect is the physical quantity measurement recording apparatus according to the first aspect, wherein the power generation means generates an electromotive force having a magnitude proportional to a change in the physical quantity, and the physical quantity measurement means determines the magnitude of the electromotive force. Based on this, the physical quantity is measured.

  According to the physical quantity measurement recording apparatus of the second aspect, in addition to the above effect, the magnitude of the change in the physical quantity can be easily measured.

  A physical quantity measurement recording apparatus according to a third aspect of the present invention is the physical quantity measurement recording apparatus according to the first or second aspect, further comprising an activation unit that activates the physical quantity measurement recording apparatus when the magnitude of the electromotive force is a predetermined value or more. .

  According to the physical quantity measuring and recording apparatus of the third aspect, for example, since the change in physical quantity that does not affect the deterioration of the quality of the package is not recorded, the capacity of the recording means is saved.

  A physical quantity measurement recording apparatus according to a fourth aspect of the present invention is the physical quantity measurement recording apparatus according to the first to third aspects, wherein the power generation means is disposed at a predetermined location around the movable body and a movable body that is movably held in a hollow space. A piezoelectric element that generates an electromotive force when the moving body collides, and the physical quantity measuring means applies each impulse to the power generating means, and each piezoelectric element when the moving body collides with the piezoelectric element. The impulse is measured by the electric power supplied from.

  According to the physical quantity measurement recording apparatus according to claim 4, since it is possible to record the impact applied to the luggage or the like to which the physical quantity measurement recording apparatus is attached, for example, a luggage that may be easily damaged by the impact is transported. At that time, it is possible to know whether the baggage was properly managed so as not to be shocked. By reading the impact record recorded in the recording means, the recipient of the package can return the product without unpacking the package that may be damaged by the impact or request compensation, for example. Further, the transporter or the like can use the impact record recorded in the recording means as evidence that the package has been properly managed.

  The physical quantity measurement recording apparatus according to claim 5 is the physical quantity measurement recording apparatus according to claim 4, wherein the physical quantity measurement means detects the direction of the impulse by comparing the magnitude of the electromotive force generated from each piezoelectric element. To do.

  A physical quantity measurement recording apparatus according to a sixth aspect is the physical quantity measurement recording apparatus according to any one of the first to fifth aspects, wherein the power generation means includes a thermocouple that generates an electromotive force when an ambient temperature changes, and the physical quantity measurement means includes the thermocouple. The temperature change is measured by the electric power supplied from the thermocouple when the ambient temperature changes.

  According to the physical quantity measuring and recording apparatus according to claim 6, since it is possible to record the temperature change around the luggage or the like to which the physical quantity measuring and recording apparatus is attached, it is necessary to appropriately manage the temperature in order to maintain the quality. Can be used to manage

  A physical quantity measurement recording apparatus according to a seventh aspect is the physical quantity measurement recording apparatus according to the first to sixth aspects, wherein the power generation means includes a solar power generation element that generates an electromotive force when irradiated with light, and the physical quantity measurement means includes the solar power generation element. When the battery is irradiated with light, the illuminance of the light is measured by the electric power supplied from the solar battery.

  According to the physical quantity measuring and recording apparatus according to claim 7, since it is possible to record the amount of light applied to the luggage or the like to which the physical quantity measuring and recording apparatus is attached, for example, by irradiating strong light such as photographic film or TA paper It can be used to manage packages that may deteriorate in quality.

  A physical quantity measurement recording apparatus according to an eighth aspect of the present invention is the physical quantity measurement recording apparatus according to the first to seventh aspects, wherein the power generation means includes a propeller that rotates by receiving wind power or hydraulic power, and a motor that generates an electromotive force by the rotation of the propeller. The physical quantity measuring means measures the wind speed or the flow rate of water with the electric power supplied from the motor.

  According to the physical quantity measuring and recording apparatus according to claim 8, since it is possible to record the wind speed and the flow rate of water sprayed on the physical quantity measuring and recording apparatus, It can be used for ecological surveys of migratory birds and marine life (eg, whales and dolphins).

  A physical quantity change history recording system according to a ninth aspect includes at least one of the physical quantity measurement recording apparatuses according to any one of claims 1 to 8, power supply means for supplying power to the physical quantity measurement recording apparatus, and a time count for measuring time. Means, a time information transmitting means for transmitting time information timed to the recording means, and a control means for controlling each device, wherein the control means controls the power supply means every predetermined time to control the power supply means. Power is supplied to the physical quantity measurement recording device, and the time information transmission unit is controlled to cause the physical quantity measurement recording device to transmit time information. The recording unit uses the power supplied from the power supply unit to The time information transmitted from the information transmitting means is sequentially recorded.

  According to the physical quantity change history recording system according to claim 9, since the time zone in which the physical quantity change has occurred can be known, for example, the location where the physical quantity change has occurred by collating with the transportation schedule of the transport vehicle, etc. Can be specified.

  The physical quantity change history recording system according to claim 10 is the physical quantity change recording system according to claim 9, wherein the physical quantity change history is recorded by reading the physical quantity and time information recorded in the recording means at each predetermined time and recording the physical quantity change history. A history recording means is further provided.

  According to the physical quantity measurement recording device of the present invention, a physical quantity change (for example, the device) in a transport vehicle, a warehouse, or the like in which a package to which the physical quantity measurement recording device is attached is stored, for example, is not required. Can be monitored over a long period of time. In addition, according to the physical quantity change history recording system of the present invention, it is possible to know the time zone in which a physical quantity change has occurred without mounting a clock, a clock battery, or the like on the physical quantity measurement recording apparatus.

  Preferred embodiments of a physical quantity measurement recording apparatus and physical quantity change history recording system according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a diagram schematically showing a physical quantity change history recording system according to the first embodiment of the present invention. As shown in FIG. 1, the physical quantity change history recording system 10 is a system for recording the state of a load 12 stored in a transport vehicle, a warehouse, or the like (change history of physical quantities around the load 12). A physical quantity measurement recording device 14 included or attached and a management device 16 that manages the physical quantity measurement recording device 14 are included. Here, the change in the physical quantity around the load 12 is, for example, an impact (impact) applied to the load 12 or a temperature change, an amount of light to be irradiated, a wind speed, a flow rate of water, and the like. In general, there are a plurality of packages 12, but only one package 12 is omitted in FIG.

  Hereinafter, the physical quantity measurement recording device 14 will be described. FIG. 2 is a diagram schematically showing a physical quantity measurement recording apparatus according to the first embodiment of the present invention. FIG. 2A is a plan view, and FIG. 2B is a cross-sectional view.

  As shown in FIG. 2, the physical quantity measurement recording device 14 of the present embodiment is configured by an IC tag 22 including an IC chip 18 and an antenna (loop coil antenna) 20, an impact sensor 24, and the like disposed on a substrate 26. Is done.

  The impact sensor 24 includes a disk-shaped moving body 30 that is held so as to be freely movable in a space 28 provided in the substrate 26, a piezoelectric element (for example, a laminated piezoelectric element) 32, and the like. .

  The piezoelectric element 32 is an element that generates an electromotive force by a piezo effect when an impulse is applied, and includes four arc-shaped piezoelectric elements 32A to 32D arranged so as to surround the outer periphery of the moving body 30, and It consists of two disk-shaped piezoelectric elements 32E and 32F arranged substantially in parallel so as to sandwich the body 30 therebetween. In addition, the shape and arrangement | positioning of the moving body 30 and the piezoelectric element 32 are not limited to the example shown in FIG.

  FIG. 3 is a block diagram showing the main configuration of the circuit of the physical quantity measurement recording apparatus according to the first embodiment of the present invention. As shown in FIG. 3, the physical quantity measurement recording device 14 of this embodiment includes a rectification / storage circuit 34, charge amplifiers (36A to 36F) connected to the piezoelectric elements 32A to 32F, and charge amplifiers 36A to 36F, respectively. It includes a connected sample / hold circuit (38A to 38F, respectively), a switch circuit 40, and the like.

  Next, the operation of the physical quantity measurement recording device 14 will be described. When an impact (impulse) is applied to the luggage 12 to which the physical quantity measurement recording device 14 is attached, the moving body 30 vibrates in the space 28 and collides with the piezoelectric elements 32A to 32F. Thereby, an electromotive force is generated in each of the piezoelectric elements 32 </ b> A to 32 </ b> F, and a current is input to the rectification / storage circuit 34.

  FIG. 4 is a circuit diagram showing the rectification / storage circuit 34. As shown in FIG. 4, the rectification / storage circuit 34 includes a rectification circuit 42 and a storage circuit (capacitor C1). The AC components of the currents input from the piezoelectric elements 32A to 32F are rectified by the rectifier circuit 42 and stored in the capacitor C1. When the potential stored in the capacitor C1 becomes equal to or higher than a predetermined value, power is supplied from the capacitor C1 to the IC chip 18 and the reset circuit 44, and the IC chip 18 is power-on reset (POR).

  Returning to the description of FIG. 3, when an electromotive force is generated in each of the piezoelectric elements 32A to 32F, a signal including information on the magnitude of the electromotive force is input to the charge amplifiers 36A to 36F and amplified, and a sample / hold circuit is obtained. 38A to 38F. The signals input to the sample / hold circuits 38A to 38F are A / D converted and held.

  The IC chip 18 controls the switch circuit 40 and individually receives signals from the sample / hold circuits 38A to 38F. The magnitude of the electromotive force is recorded in the memory 46 in order (that is, in the order in which the moving body 30 collides) together with the name of the piezoelectric element that has generated the electromotive force. By analyzing the piezoelectric element name, electromotive force magnitude and order (hereinafter referred to as physical quantity change history) recorded in the memory 46, the magnitude of impact applied to the physical quantity measurement recording device 14 and You can get the direction. For example, when an impact is applied to the luggage 12, the moving body 30 is vibrated and gradually attenuates, so that the magnitude of the electromotive force generated in each of the piezoelectric elements 32A to 32F gradually decreases. Therefore, the magnitude of the electromotive force recorded in the memory 46 is analyzed to find a place where the magnitude of the electromotive force decreases in order, and the first (that is, the maximum electromotive force) and the second electromotive force are found. The direction of the impact (impulse) applied to the luggage 12 is specified from the name of the piezoelectric element in which the occurrence of sag occurs.

  As described above, the physical quantity measurement recording device 14 of the present embodiment uses the piezoelectric element 32 as a power source when an impact is applied to the load 12 and the magnitude and direction of the impact are measured and recorded. It is possible to manage the storage state of the luggage 12 for a long period of time without performing work such as replacement of the power source or charging.

  Next, the management device 16 will be described with reference to FIG. FIG. 5 is a block diagram showing the management device 16.

  The management device 16 includes a control device 50, a power supply device 52, a clock 54, a recording unit 56, a power transmission device 58, a time information transmission device 60, and an IC tag reader 62.

  The control device 50 is a control unit that performs overall control of each device in the management device 16. The power supply device 52 is a device for supplying power to the management device 16, and is connected to, for example, a battery of a transport vehicle that transports the luggage 12, an AC power source of a warehouse where the luggage 12 is stored, and the like. The clock 54 is a device for measuring the date and time.

  Next, the operation of the management device 16 will be described with reference to FIGS. FIG. 6 is a block diagram illustrating a main configuration of a functional unit that performs communication processing with the management device 16 of the IC chip 18.

  As shown in FIG. 6, in addition to the memory 46 described above, the IC chip 18 of this embodiment includes a CPU 64, a circulator 66 connected to the loop coil antenna 20, a power supply block 68, a demodulator 70, a code / Decoding means 72, a modulator 74, etc. are provided.

  First, power is wirelessly transmitted from the power transmission device 58 of the management device 16 to the IC tag 22 of the physical quantity measurement recording device 14. Then, the power transmitted by the power transmission device 58 is stored in the power storage circuit (capacitor C2) via the loop coil antenna 20. When the potential stored in the capacitor C2 becomes equal to or higher than a predetermined value, power is supplied from the capacitor C2 to the power supply block 68 of the IC chip 18 through the circulator 66. Next, power is supplied to each circuit (memory 46, CPU 64, demodulator 70, encoder / decoder 72, and modulator 74) in the IC chip 18 by the power supply block 68, and the IC chip 18 is powered on reset ( POR). In FIG. 6, the power supply path is indicated by a dashed arrow.

  Next, the time information transmission device 60 shown in FIG. 5 transmits the date and time information (referred to as time information in the following description) timed by the clock 54 to the physical quantity measurement recording device 14. This time information is input to the demodulator 70 via the circulator 66 and demodulated. The demodulated time information is decoded by the encoding / decoding means 72 and recorded in the memory 46 by the CPU 64.

  Next, the IC tag reader 62 transmits a read signal of the change history of the physical quantity recorded in the memory 46 in the IC chip 18. Then, this read signal is input to the demodulator 70 via the circulator 66 and demodulated. The demodulated read signal is decoded by the encoding / decoding means 72 and recognized by the CPU 64.

  Then, the change history of the physical quantity recorded in the memory 46 is read by the CPU 64 and encoded by the encoding / decoding means 72. The encoded physical quantity change history is modulated by the modulator 74 and transmitted from the loop coil antenna 20 to the management device 16 via the circulator 66. Note that the change history of the physical quantity transmitted to the management device 16 may be deleted from the memory 46 of the IC chip 18 except for the time information input last.

  Next, the change history of the physical quantity received by the management device 16 is demodulated / decoded by the IC tag reader 62 and recorded in the recording means 56.

  According to the physical quantity change history recording system 10 of the present embodiment, the time zone in which an impact is applied to the luggage 12 is known from the order of the time information periodically recorded on the IC chip 18 and the information of the detected impact. be able to. Further, for example, when the luggage 12 is carried by a transport vehicle, it is possible to identify the place where the impact is received by collating the change history of the physical quantity with the transportation schedule.

  Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is a diagram schematically showing a physical quantity measurement recording apparatus according to the second embodiment of the present invention. FIG. 7A is a plan view, and FIG. 7B is a cross-sectional view.

  As shown in FIG. 7, the physical quantity measurement recording device 14 of the present embodiment has a configuration in which an IC tag 22 including an IC chip 18 and an antenna (loop coil antenna) 20, a temperature sensor 80, and the like are disposed on a substrate 82. Is done.

  The temperature sensor 80 of the present embodiment is an element (thermocouple) that generates an electromotive force by sensing a temperature change (temperature gradient) of the surrounding luggage 12 by the Seebeck effect. In this embodiment, one of the metal wires of the thermocouple 80 is protected by a heat insulating member (such as polystyrene foam or ceramics) 84 inside the substrate 82 where the temperature change is small, and the other is where the luggage 12 is stored. It arrange | positions so that it may contact the air | atmosphere inside a transport vehicle, a warehouse, etc. Thereby, the temperature of the transport vehicle, the warehouse, or the like where the luggage 12 is stored can be measured by the thermocouple 80. In the present embodiment, a sensor that develops color according to the ambient temperature may be used in combination.

  Next, the operation of the physical quantity measurement recording device 14 of the present embodiment will be described. FIG. 8 is a block diagram showing the main configuration of the circuit of the physical quantity measurement recording apparatus according to the second embodiment of the present invention.

  As shown in FIG. 8, the physical quantity measurement recording device 14 of this embodiment includes a rectification / storage circuit 34, a charge amplifier 86 connected to a thermocouple 80, a sample / hold circuit 88 connected to the charge amplifier 86, and the like. Is included.

  When the temperature around the package 12 to which the physical quantity measurement recording device 14 is attached changes, an electromotive force proportional to the temperature gradient is generated in the thermocouple 80, and the current is input to the rectification / storage circuit 34, and the IC chip 18 is powered. On-reset (POR). The rectification / storage circuit 34 is the same as the example of FIG.

  On the other hand, signals including information on the magnitude of the electromotive force generated in the thermocouple 80 are input to the charge amplifier 86 and amplified, and input to the sample / hold circuit 88. The signal input to the sample / hold circuit 88 is A / D converted and input to the IC chip 18. Thereby, information on the magnitude of the electromotive force corresponding to the magnitude of the temperature change around the luggage 12 is recorded on the IC chip 18.

  As described above, the physical quantity measurement recording device 14 of the present embodiment uses the thermocouple 80 as a power source when measuring and recording the temperature change around the luggage 12, so that the power supply such as a battery is replaced or charged. The temperature change around the luggage 12 can be recorded over a long period of time without performing the above operation.

  Further, according to the physical quantity change history recording system 10 of the present embodiment, the time information recorded on the IC chip 18 is transmitted by periodically transmitting the time information by the management device 16 as in the above-described embodiment. The time zone in which the temperature change has occurred can be known from the order of the temperature change information. Note that the management device 16 is the same as that shown in FIGS.

  Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a diagram schematically showing a physical quantity measurement recording apparatus according to the third embodiment of the present invention. FIG. 9A is a plan view, and FIG. 9B is a cross-sectional view.

  As shown in FIG. 9, the physical quantity measurement recording device 14 of the present embodiment is configured by an IC tag 22 including an IC chip 18 and an antenna (loop coil antenna) 20, an illuminance sensor 100, and the like disposed on a substrate 102. Is done. In addition, the illumination intensity sensor 100 of this embodiment is a solar power generation element to which a solar cell is applied.

  Next, the operation of the physical quantity measurement recording device 14 of the present embodiment will be described. FIG. 10 is a block diagram showing the main configuration of the circuit of the physical quantity measurement recording apparatus according to the third embodiment of the present invention.

  As shown in FIG. 10, the physical quantity measurement recording device 14 of this embodiment includes a rectification / storage circuit 34, a charge amplifier 86 connected to the photovoltaic power generation element 100, and a sample / hold circuit connected to the charge amplifier 86. 88 etc. are included.

  When the amount of light (illuminance) applied to the luggage 12 to which the physical quantity measurement recording device 14 is attached becomes equal to or greater than a predetermined value, an electromotive force is generated in the solar power generation element 100 in proportion to the magnitude of the illuminance, and the current is The IC chip 18 is input to the rectification / storage circuit 34 and the power is reset (POR). The rectification / storage circuit 34 is the same as the example of FIG.

  On the other hand, a signal including information on the magnitude of the electromotive force generated in the photovoltaic power generation device 100 is input to the charge amplifier 86, amplified, and input to the sample / hold circuit 88. The signal input to the sample / hold circuit 88 is A / D converted and input to the IC chip 18. As a result, the magnitude of the electromotive force generated in proportion to the illuminance of the light irradiated on the luggage 12 is recorded on the IC chip 18.

  As described above, the physical quantity measurement recording device 14 of the present embodiment uses the photovoltaic power generation element 100 as a power source when measuring and recording the illuminance around the luggage 12, so that the power supply such as a battery is replaced or charged. It is possible to record the illuminance of the light irradiated on the luggage 12 over a long period of time without performing such work.

  Further, according to the physical quantity change history recording system 10 of the present embodiment, the time information recorded on the IC chip 18 is transmitted by periodically transmitting the time information by the management device 16 as in the above-described embodiment. The time zone in which the luggage 12 is exposed to strong light can be known from the order of information on the illuminance change. Note that the management device 16 is the same as that shown in FIGS.

  Next, a fourth embodiment of the present invention will be described. FIG. 11 is a block diagram showing a main configuration of a physical quantity measurement recording apparatus according to the fourth embodiment of the present invention.

  As shown in FIG. 11, the physical quantity measurement recording device 14 of the present embodiment includes a propeller 110 that rotates by receiving wind power or hydraulic power, a motor 112 that generates an electromotive force by the rotation of the propeller 110, and the like. 114.

  In the present embodiment, the power supplied from the generator 114 is used as the operating power of the IC tag 22 to measure and record the wind speed or the water flow rate. Since the IC chip 18, the rectification / storage circuit 34, the charge amplifier 86, the sample / hold circuit 88, and the like are the same as those in FIGS.

  According to the present embodiment, it is possible to measure the wind speed and the water flow rate around the physical quantity measurement recording device 14 for a long period of time without performing work such as replacement or charging of a power source such as a battery. The physical quantity measurement recording device 14 of the present embodiment can be used for, for example, monitoring of an impact applied to an airplane propeller, a ship screw, or the like.

  Further, by mounting a transmitter or the like on the physical quantity measurement recording device 14 and using the above-described generator 114 as a power source of the transmitter or the like, for example, ecology such as migratory birds and marine organisms (whales, dolphins, etc.) It can be used for surveys.

  In the above embodiment, when the management device 16 is not used, the physical quantity measurement recording device 14 may be equipped with a clock and a clock battery. Also in this case, the required battery can be minimized by using the above-described piezoelectric element or the like.

  Moreover, the physical quantity measurement recording device 14 may include a plurality of piezoelectric elements, thermocouples, solar power generation elements, and the like. In this case, it is possible to measure and record a desired one of impact, temperature, illuminance, and the like.

The figure which shows typically the physical-quantity change log | history recording system which concerns on the 1st Embodiment of this invention. The figure which shows typically the physical quantity measurement recording device which concerns on the 1st Embodiment of this invention. The block diagram which shows the main structures of the circuit of the physical quantity measurement recording device which concerns on the 1st Embodiment of this invention Circuit diagram showing rectification / storage circuit 34 Block diagram showing the management device 16 The block diagram which shows the main structures of the function part which performs a communication process with the management apparatus 16 of IC chip 18 The figure which shows typically the physical quantity measurement recording device which concerns on the 2nd Embodiment of this invention. The block diagram which shows the main structures of the circuit of the physical quantity measurement recording device which concerns on the 2nd Embodiment of this invention. The figure which shows typically the physical quantity measurement recording device which concerns on the 3rd Embodiment of this invention. The block diagram which shows the main structures of the circuit of the physical quantity measurement recording device which concerns on the 3rd Embodiment of this invention. The block diagram which shows the main structures of the physical quantity measurement recording device which concerns on the 4th Embodiment of this invention.

Explanation of symbols

  C1, C2 ... Power storage circuit (capacitor), 10 ... Physical quantity change history recording system, 12 ... Luggage, 14 ... Physical quantity measurement recording device, 16 ... Management device, 18 ... IC chip, 20 ... Antenna, 22 ... IC tag, 24 ... Shock sensor, 26 ... board, 28 ... space in board 26, 30: moving body, 32 (32A to 32F) ... piezoelectric element, 34 ... rectification / storage circuit, 36A-36F ... charge amplifier, 38A-38F ... sample / Hold circuit, 40 ... switch circuit, 42 ... rectifier circuit, 44 ... reset circuit, 46 ... memory, 50 ... control device, 52 ... power supply device, 54 ... clock, 56 ... recording means, 58 ... power transmission device, 60 ... time Information transmitting device, 62 ... IC tag reader, 64 ... CPU, 66 ... circulator, 68 ... power supply block, 70 ... demodulator, 72 ... encoding / decoding means, 74 ... Conditioner 80 ... Temperature sensor (thermocouple) 82 ... Substrate 84 ... Heat insulation member 86 ... Charge amplifier 88 ... Sample / hold circuit 100 ... Illuminance sensor (solar power generation element) 102 ... Substrate 110 ... Propeller, 112 ... motor, 114 ... wind or hydroelectric generator

Claims (10)

Power generation means for generating an electromotive force when a change in physical quantity is detected;
Physical quantity measuring means for measuring the physical quantity with the electric power supplied from the power generation means;
Recording means for recording the measured physical quantity by the power supplied from the power generation means;
A physical quantity measurement recording apparatus comprising: The power generation means generates an electromotive force having a magnitude proportional to the change in the physical quantity,
The physical quantity measurement recording apparatus according to claim 1, wherein the physical quantity measuring unit measures the magnitude of the physical quantity based on the magnitude of the electromotive force.   The physical quantity measurement recording apparatus according to claim 1, further comprising an activation unit that activates the physical quantity measurement recording apparatus when the magnitude of the electromotive force is a predetermined value or more. The power generation means includes a moving body that is movably held in a hollow space, and a piezoelectric element that is disposed at a predetermined location around the moving body and generates an electromotive force when the moving body collides,
The physical quantity measuring means measures the impulse with electric power supplied from each piezoelectric element when an impulse is applied to the power generation means and the movable body collides with the piezoelectric element. Item 4. The physical quantity measurement recording device according to any one of Items 1 to 3.   5. The physical quantity measuring and recording apparatus according to claim 4, wherein the physical quantity measuring means detects the direction of the impulse by comparing the magnitude of electromotive force generated from each piezoelectric element. The power generation means includes a thermocouple that generates an electromotive force when the ambient temperature changes,
The said physical quantity measurement means measures the said temperature change with the electric power supplied from the said thermocouple, when the temperature around the said thermocouple changes. Physical quantity measuring and recording device. The power generation means includes a solar power generation element that generates an electromotive force when irradiated with light,
The physical quantity measuring unit measures the illuminance of the light by the electric power supplied from the solar cell when the solar cell is irradiated with light. Physical quantity measuring and recording device. The power generation means includes a propeller that rotates by receiving wind or hydraulic power, and a motor that generates an electromotive force by the rotation of the propeller.
The physical quantity measurement recording apparatus according to claim 1, wherein the physical quantity measurement unit measures a wind speed or a flow rate of water using electric power supplied from the motor. At least one of the physical quantity measurement and recording devices according to claim 1,
Power supply means for supplying power to the physical quantity measurement recording device;
A time measuring means for measuring time;
Time information transmitting means for transmitting time information timed to the recording means;
Control means for controlling each device,
The control means controls the power supply means at every predetermined time to supply power to the physical quantity measurement recording apparatus, and controls the time information transmission means to transmit time information to the physical quantity measurement recording apparatus,
The physical quantity change history recording system, wherein the recording means sequentially records the time information transmitted from the time information transmitting means by the power supplied from the power supply means.   10. The physical quantity change history according to claim 9, further comprising physical quantity change history recording means for reading the physical quantity and time information recorded in the recording means at every predetermined time and recording the change history of the physical quantity. Recording system.

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