JP5800345B1

JP5800345B1 - Wireless sensor, monitoring system and monitoring method using the same

Info

Publication number: JP5800345B1
Application number: JP2015026582A
Authority: JP
Inventors: 尊史旭; 伊藤　誠; 伊藤　　誠; 和秀三木
Original assignee: Shinkawa Sensor Technology Inc
Current assignee: Shinkawa Sensor Technology Inc
Priority date: 2015-02-13
Filing date: 2015-02-13
Publication date: 2015-10-28
Anticipated expiration: 2035-02-13
Also published as: WO2016129131A1; JP2016148628A

Abstract

【課題】機械設備から運転時に発生する機械振動を電気エネルギーに変換し、電源として活用することで、電源配線又はバッテリの必要がなく、機械設備における機械振動の周波数変化が起きても安定した発電能力が得られ、機械設備の運転状態と異常感知の有無をワイヤレスで監視する。【解決手段】機械設備の振動を利用しながら錘１２に伝播する動吸振器構造１３と、錘１２の振動を電気エネルギーに変換する圧電素子１４と、から成る発電部１５と、機械設備の運転状態と異常の有無を感知して検出信号を出力するセンサ部１６と、センサ部１６が出力する検出信号を無線で外部と送受信する送受信部１７とを備えた装置である。センサ部１６及び送受信部１７は、発電部１５で発電した電力が供給されて動作するように構成された。【選択図】図１[PROBLEMS] To stably generate power even if a frequency change of mechanical vibration occurs in mechanical equipment by converting mechanical vibration generated during operation from mechanical equipment into electrical energy and using it as a power source without the need for power supply wiring or a battery. Capability is gained, and the operating status of machine equipment and presence / absence of abnormalities are monitored wirelessly. A power generation unit including a dynamic vibration absorber structure that propagates to a weight while utilizing vibration of the mechanical equipment, a piezoelectric element that converts the vibration of the weight into electrical energy, and operation of the mechanical equipment. The apparatus includes a sensor unit 16 that senses a state and the presence / absence of an abnormality and outputs a detection signal, and a transmission / reception unit 17 that transmits and receives the detection signal output from the sensor unit 16 wirelessly. The sensor unit 16 and the transmission / reception unit 17 are configured to operate by being supplied with power generated by the power generation unit 15. [Selection] Figure 1

Description

本発明は、回転機械設備等の振動変化を感知して運転状態と異常感知の有無をワイヤレスで監視するセンシング技術に係る。本発明は、ワイヤレスによる監視システムにおいてセンサ装置に発電機能を備えて電源配線又はバッテリの必要がないワイヤレスセンサ、これを用いた監視システム及び監視方法に関する。 The present invention relates to a sensing technique for wirelessly monitoring an operating state and presence / absence of abnormality detection by detecting a vibration change of a rotating machine facility or the like. The present invention relates to a wireless sensor that has a power generation function in a sensor device in a wireless monitoring system and does not require a power supply wiring or a battery, a monitoring system using the wireless sensor, and a monitoring method.

回転機械設備は運転することによりその軸受等が摩耗劣化する。その異常が原因して回転機械設備の停止あるいは故障することがある。例えば回転機械設備等の軸受の場合には、劣化が進行すると振動が大きくなる。この振動を検出する振動速度センサ等を定期的に回転機械設備の軸受近傍に取り付けて状態監視している。振動速度センサの検出結果から回転機械設備の軸受の異常状態の有無、その劣化状態を監視することにより回転機械設備を監視する状態監視システムが普及している。 The bearings and the like of the rotating machine equipment wear and deteriorate due to operation. The rotating machine equipment may stop or break down due to the abnormality. For example, in the case of a bearing such as a rotating machine facility, the vibration increases as the deterioration progresses. A vibration speed sensor or the like for detecting this vibration is periodically attached to the vicinity of the bearing of the rotating machine equipment for state monitoring. 2. Description of the Related Art A state monitoring system that monitors a rotating machine facility by monitoring the presence or absence of an abnormal state of a bearing of the rotating machine facility and a deterioration state thereof from a detection result of a vibration speed sensor has become widespread.

小型の回転機械設備については、センサ装置及び配線費用等の監視設備費用が高いため、状態監視システムが普及していない。そこで、設置費用、運転費用が高くならないワイヤレス監視システムへの期待が高まっている。 For small rotating machinery equipment, the cost of monitoring equipment such as sensor equipment and wiring costs is high, so that the state monitoring system is not widespread. Therefore, there is an increasing expectation for a wireless monitoring system that does not increase installation costs and operation costs.

ワイヤレス監視システムは、有線式のセンシングシステムに比べ、線材の引き回しや保守が不要であるといった利点がある。ワイヤレス監視システムは、無線通信を長時間にわたって行う必要があり、消費電力が大きく一般に大型の電源を備える必要があり、装置の小型化が困難であった。 The wireless monitoring system has the advantage that it is not necessary to route and maintain the wire compared to the wired sensing system. The wireless monitoring system needs to perform wireless communication for a long time, consumes a large amount of power, and generally has to have a large power source, and it is difficult to reduce the size of the apparatus.

ワイヤレス監視システムは、外部電源供給型とバッテリ搭載型が主流であり、外部電源供給型は配線工事費用が高く、バッテリ搭載型はバッテリの寿命による交換費用が高かった。そこで、ワイヤレス監視システムは、配線工事費用又はバッテリの寿命による交換費用等の理由から普及していなかった。
また、ワイヤレス監視システムは危険な場所に取り付けられる場合が多く、容易に近づくことができず、バッテリの交換が困難であることも普及していない理由となっていた。 As for the wireless monitoring system, an external power supply type and a battery-mounted type are mainstream. The external power supply type has a high wiring construction cost, and the battery-mounted type has a high replacement cost due to the battery life. Therefore, the wireless monitoring system has not been widespread for reasons such as wiring work costs or replacement costs due to battery life.
In addition, the wireless monitoring system is often installed in a dangerous place, cannot be easily approached, and it is difficult to replace the battery.

そこで、振動検出装置内で自発電により装置内の全消費電力を十分に賄うことができ、バッテリ等の電源寿命を考慮する必要がなく、連続運転する設備の軸受等の状態を常時監視し、その異常振動を確実に検出して表示することができる機械振動発電による、回転機械の軸受等の振動検出に関する技術が提案されている。例えば特許文献１の特開平８−１４５７８３号公報「自発電源による振動検出方法及び装置」のように、振動の加速度に対応する検出信号を出力する加速度センサと、該加速度センサの出力レベルがあらかじめ設定された基準レベルを越えたときに出力を発生するレベル判定器と、該レベル判定器の出力を表示する表示器と、振動を受けたときに電荷を発生する圧電セラミックを用いた圧電セラミック電源発生部と、該圧電セラミック電源発生部の発生する電荷を直流電源に変換し、該直流電源を前記レベル判定器及び表示器の消費電源として供給する直流変換部とを備えた自発電源による振動検出装置が提案されている。 Therefore, self-power generation in the vibration detection device can sufficiently cover the total power consumption in the device, there is no need to consider the power source life of the battery, etc., constantly monitoring the state of the bearings etc. of continuously operating equipment, There has been proposed a technique relating to vibration detection of a bearing or the like of a rotating machine by mechanical vibration power generation capable of reliably detecting and displaying the abnormal vibration. For example, as disclosed in Japanese Patent Application Laid-Open No. 8-145578, “Vibration detection method and apparatus using a spontaneous power source”, an acceleration sensor that outputs a detection signal corresponding to vibration acceleration and an output level of the acceleration sensor are set in advance. Piezoelectric ceramic power generation using a level determination device that generates an output when a specified reference level is exceeded, a display that displays the output of the level determination device, and a piezoelectric ceramic that generates an electric charge when subjected to vibration And a DC conversion unit that converts the electric charge generated by the piezoelectric ceramic power generation unit into a DC power source and supplies the DC power source as a power consumption for the level determination device and the display. Has been proposed.

特開平８−１４５７８３号公報JP-A-8-145783

特許文献１の「自発電源による振動検出方法及び装置」は、図４（ａ）の「周波数と発電出力の関係グラフ」に示すように、機械振動発電のように発電電源として特定周波数に合わせた発電装置では、機械振動が特定周波数の中心から少しでも逸脱すると発電能力が極端に低下するものが多かった。そこで、センサ装置に十分な給電ができず、安定した監視が困難であるという問題を有していた。 The “vibration detection method and apparatus using a spontaneous power source” disclosed in Patent Document 1 is adjusted to a specific frequency as a power generation power source as in mechanical vibration power generation as shown in the “relationship graph between frequency and power generation output” in FIG. In many power generation devices, when the mechanical vibration deviates even slightly from the center of the specific frequency, the power generation capacity is extremely reduced. Therefore, there has been a problem that sufficient power cannot be supplied to the sensor device and stable monitoring is difficult.

なお、センサ装置と太陽光発電又は風力発電等の発電機能とが一体となった一体型のワイヤレス監視システムも提案されている。しかし、太陽光発電方式は夜間又は屋内では発電することができず、風力発電方式は風量により安定した発電能力が得られないという問題を有していた。 An integrated wireless monitoring system in which a sensor device and a power generation function such as solar power generation or wind power generation are integrated has also been proposed. However, the solar power generation method cannot generate power at night or indoors, and the wind power generation method has a problem that a stable power generation capability cannot be obtained depending on the air volume.

本発明は、かかる問題点を解決するために創案されたものである。すなわち、本発明の目的は、機械設備から運転時に発生する機械振動を電気エネルギーに変換し、電源として活用することで、電源配線又はバッテリの必要がなく、機械設備における機械振動の周波数変化が起きても安定した発電能力が得られ、機械設備の運転状態と異常感知の有無をワイヤレスで監視することができるワイヤレスセンサ、これを用いた監視システム及び監視方法を提供することにある。 The present invention has been developed to solve such problems. That is, the object of the present invention is to convert mechanical vibration generated during operation from mechanical equipment into electrical energy and use it as a power source, so that there is no need for power supply wiring or a battery, and the frequency change of mechanical vibration in the mechanical equipment occurs. It is an object of the present invention to provide a wireless sensor capable of obtaining a stable power generation capability and wirelessly monitoring the operating state of a machine facility and the presence or absence of abnormality, and a monitoring system and a monitoring method using the wireless sensor.

本発明のワイヤレスセンサは、機械設備の運転状態と異常の有無を監視するワイヤレスセンサ（１１）であって、
前記機械設備の振動が伝播するように設けられた支持台（１８）と、該支持台（１８）に取り付けられた支点部（２３）と、該支点部（２３）に板材の中間部を支点として支持された支持板材（２４）と、該支持板材（２４）に取り付けられた、上下動する錘（１２）とを備えた、該錘（１２）をシーソー状態に揺動させて機械振動の運動エネルギーを抑制、吸収する動吸振器構造（１３）と、該動吸振器構造（１３）の錘（１２）の下方又は上方に設けられた圧電素子（１４）とを有し、前記機械設備の振動が前記支持台（１８）から該動吸振器構造（１３）に伝播した際に、前記支持板材（２４）の中間部を支点として上下動する該錘（１２）と該圧電素子（１４）の間に設けられた作動子（２５）が、該圧電素子（１４）を押圧して発電する発電部（１５）と、
前記機械設備の運転状態と異常の有無を感知して検出信号を出力するセンサ部（１６）と、
前記センサ部（１６）が出力する検出信号を無線で外部と送受信する送受信部（１７）と、を備えており、
前記センサ部（１６）及び送受信部（１７）は、前記発電部（１５）で発電した電力が供給されて動作するように構成された、ことを特徴とする。
例えば、前記センサ部（１６）は、前記機械設備から発生する振動を感知して検出信号を出力する振動センサである。 The wireless sensor of the present invention is a wireless sensor (11) for monitoring the operating state of machine equipment and the presence or absence of abnormality,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A mechanical vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided below or above a weight (12) of the dynamic vibration absorber structure (13), the mechanical equipment when the vibration of propagating the support table from (18) to the animal absorber structure (13), said intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the support plate (24) (14 ) is actuator (25) provided between, calling to press the piezoelectric element (14) The power generation unit to (15),
A sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal;
A transmission / reception unit (17) that wirelessly transmits and receives a detection signal output from the sensor unit (16), and
The sensor unit (16) and the transmission / reception unit (17) are configured to operate by being supplied with power generated by the power generation unit (15).
For example, the sensor unit (16) is a vibration sensor that detects a vibration generated from the mechanical equipment and outputs a detection signal.

前記発電部（１５）は、
前記支持板材（２４）の両側に取り付けられた一対の錘（１２）と、
前記支持台（１８）に取り付けられた２か所の圧電素子（１４）と、を備えたものである。 The power generation unit (15)
A pair of weights (12) attached to both sides of the support plate (24);
And two piezoelectric elements (14) attached to the support base (18).

また、前記発電部（１５）は、
前記支持板材（２４）に、該支持板材（２４）が水平に維持されるように取り付けられた複数個の錘（１２）と、
前記支持台（１８）に取り付けられた複数個の圧電素子（１４）と、を備えたものである。 In addition, the power generation unit (15)
A plurality of weights (12) attached to the support plate (24) so that the support plate (24) is maintained horizontally;
And a plurality of piezoelectric elements (14) attached to the support base (18).

本発明のワイヤレスセンサを用いた監視システムは、機械設備の振動変化を感知して、運転状態と異常感知の有無をワイヤレスで監視するワイヤレスセンサ（１１）を用いた監視システム（４１）であって、
前記機械設備の振動が伝播するように設けられた支持台（１８）と、該支持台（１８）に取り付けられた支点部（２３）と、該支点部（２３）に板材の中間部を支点として支持された支持板材（２４）と、該支持板材（２４）に取り付けられた、上下動する錘（１２）とを備えた、該錘（１２）をシーソー状態に揺動させて機械振動の運動エネルギーを抑制、吸収する動吸振器構造（１３）と、該動吸振器構造（１３）の錘（１２）の下方又は上方に設けられた圧電素子（１４）とを有し、前記機械設備の振動が前記支持台（１８）から該動吸振器構造（１３）に伝播した際に、前記支持板材（２４）の中間部を支点として上下動する該錘（１２）と該圧電素子（１４）の間に設けられた作動子（２５）が、該圧電素子（１４）を押圧して発電する発電部（１５）と、該機械設備の運転状態と異常の有無を感知して検出信号を出力するセンサ部（１６）と、該センサ部（１６）が出力する検出信号を無線で外部と送受信する送受信部（１７）と、から成るワイヤレスセンサ（１１）と、
前記ワイヤレスセンサ（１１）の発電部（１５）で発電した電力量が予め設定された規定値を越えたときに、前記センサ部（１６）で検知し、その検出信号を無線で外部出力するようにＯＮとＯＦＦを切り替えるセンサスイッチ部（４６）と、
前記送受信部（１７）からの検出信号を受信して、前記ワイヤレスセンサ（１１）が備えられた機器設備の運転状態と異常感知の有無を監視する監視装置（４３）と、を備えた、ことを特徴とする。 A monitoring system using a wireless sensor according to the present invention is a monitoring system (41) using a wireless sensor (11) that wirelessly monitors an operating state and presence / absence of abnormality detection by detecting a vibration change of a mechanical facility. ,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A mechanical vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided below or above a weight (12) of the dynamic vibration absorber structure (13), the mechanical equipment when the vibration of propagating the support table from (18) to the animal absorber structure (13), said intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the support plate (24) (14 ) is actuator (25) provided between, calling to press the piezoelectric element (14) A power generation unit (15), a sensor unit (16) that senses the operating state of the mechanical equipment and whether there is an abnormality, and outputs a detection signal; and a detection signal output by the sensor unit (16) A wireless sensor (11) comprising a transmission / reception unit (17) for transmitting and receiving;
When the amount of power generated by the power generation unit (15) of the wireless sensor (11) exceeds a preset specified value, the sensor unit (16) detects the power and outputs the detection signal wirelessly to the outside. A sensor switch section (46) for switching between ON and OFF;
A monitoring device (43) for receiving a detection signal from the transmission / reception unit (17) and monitoring the operating state of the equipment equipped with the wireless sensor (11) and the presence or absence of abnormality detection; It is characterized by.

前記ワイヤレスセンサ（１１）に、温度センサ、圧力センサ、流量センサなどの工業用センサを更に設け、それぞれの電力は前記発電部（１５）から給電し、それぞれの物理量信号を前記送受信部（１７）から無線送受信することができる。 The wireless sensor (11) is further provided with an industrial sensor such as a temperature sensor, a pressure sensor, and a flow rate sensor. Each power is supplied from the power generation unit (15), and each physical quantity signal is transmitted to the transmission / reception unit (17). Wireless transmission and reception.

本発明のワイヤレスセンサを用いた監視方法は、機械設備の機械振動をワイヤレスセンサ（１１）で感知し、その運転状態と異常感知の有無をワイヤレスで監視するワイヤレスセンサ（１１）を用いた監視方法であって、
前記機械設備の振動が伝播するように設けられた支持台（１８）と、該支持台（１８）に取り付けられた支点部（２３）と、該支点部（２３）に板材の中間部を支点として支持された支持板材（２４）と、該支持板材（２４）に取り付けられた、上下動する錘（１２）とを備えた、該錘（１２）をシーソー状態に揺動させて機械振動の運動エネルギーを抑制、吸収する動吸振器構造（１３）と、該動吸振器構造（１３）の錘（１２）の下方又は上方に設けられた圧電素子（１４）とを有し、前記機械設備の振動が前記支持台（１８）から該動吸振器構造（１３）に伝播した際に、前記支持板材（２４）の中間部を支点として上下動する該錘（１２）と該圧電素子（１４）の間に設けられた作動子（２５）が、該圧電素子（１４）を押圧して発電する発電部（１５）と、機械設備の運転状態と異常の有無を感知して検出信号を出力するセンサ部（１６）と、該センサ部（１６）が出力する検出信号を無線で外部と送受信する送受信部（１７）と、を備えたワイヤレスセンサ（１１）の該発電部（１５）で機械設備から生じた機械振動を用いて該センサ部（１６）及び該送受信部（１７）に給電する電力を発電し、かつ充電し、
前記発電部（１５）で発電する電力量が予め設定された規定値に達したときに、
前記センサ部（１６）で機械設備の運転状態と異常の有無を感知して検出信号を出力し、その検出信号を無線で前記送受信部（１７）から送受信し、
一方、前記発電部（１５）で発電する電力量が前記規定値に達しないときには、
発電する電力量が小さくなり、送受信する間隔は長くなるが、機械設備が危険状態にないため該送受信部（１７）から送受信しない、ことを特徴とする。
例えば、前記予め設定された発電する電力量の規定値は、前記センサ部（１６）及び前記送受信部（１７）を共に作動させることができる電力量である。 The monitoring method using the wireless sensor of the present invention is a monitoring method using the wireless sensor (11) that detects the mechanical vibration of the mechanical equipment with the wireless sensor (11) and wirelessly monitors the operation state and presence / absence of abnormality detection. Because
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A mechanical vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided below or above a weight (12) of the dynamic vibration absorber structure (13), the mechanical equipment when the vibration of propagating the support table from (18) to the animal absorber structure (13), said intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the support plate (24) (14 ) is actuator (25) provided between, calling to press the piezoelectric element (14) Power generation unit (15), a sensor unit (16) that senses the operating state of machine equipment and whether there is an abnormality, and outputs a detection signal, and a detection signal output from the sensor unit (16) is transmitted and received wirelessly to the outside The power generation unit (15) of the wireless sensor (11) provided with the transmission / reception unit (17) that supplies power to the sensor unit (16) and the transmission / reception unit (17) using mechanical vibration generated from the mechanical equipment To generate and charge electricity,
When the amount of power generated by the power generation unit (15) reaches a preset specified value,
The sensor unit (16) senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and the detection signal is transmitted and received wirelessly from the transmission / reception unit (17),
On the other hand, when the amount of power generated by the power generation unit (15) does not reach the specified value,
Although the amount of power to be generated is reduced and the transmission / reception interval is increased, the transmission / reception unit (17) does not perform transmission / reception because the mechanical equipment is not in a dangerous state.
For example, the preset specified value of the amount of power to be generated is the amount of power that can operate both the sensor unit (16) and the transmission / reception unit (17).

本発明の構成のワイヤレスセンサ（１１）では、センサの装置自体に発電機能が備えられているので、従来のように配線工事が不要になり、またバッテリを交換する必要がなくなる。そのために設置費用、維持費用を低減することができ、危険な場所に設置された機械設備の監視にも実施できる。
特に、このワイヤレスセンサ（１１）は、発電部（１５）に備えた動吸振器構造（１３）が機械設備の振動により作動し、この動吸振器構造（１３）が吸収したエネルギーにより圧電素子（１４）で発電する構成である。この動吸振器構造（１３）により錘（１２）に伝播する振動を抑制・吸収しながら圧電素子（１４）で発電できる。そこで機械設備の振動エネルギーを有効に利用することができる。即ち、この動吸振器構造（１３）の動吸振器効果を利用することで、幅広い振動周波数での発電が可能となる。回転体等の機械設備による運転時に発生する機械振動から、振動エネルギーを電気エネルギーに変換し、機械振動が例えば特定周波数５０Hzもしくは６０Hzの場合でも、これをカバーすることができ、機械振動の変化による周波数変化が起きても効率良く発電することができる。 In the wireless sensor (11) having the configuration of the present invention, since the sensor device itself has a power generation function, wiring work is not required as in the prior art, and it is not necessary to replace the battery. Therefore, the installation cost and the maintenance cost can be reduced, and the monitoring can be carried out for the machinery and equipment installed in a dangerous place.
In particular, the wireless sensor (11) has a dynamic vibration absorber structure (13) provided in the power generation unit (15) that is operated by vibration of mechanical equipment, and the energy absorbed by the dynamic vibration absorber structure (13) is a piezoelectric element ( 14). The dynamic vibration absorber structure (13) can generate power with the piezoelectric element (14) while suppressing and absorbing vibration propagating to the weight (12). Therefore, the vibration energy of the mechanical equipment can be used effectively. That is, by using the dynamic vibration absorber effect of this dynamic vibration absorber structure (13), it is possible to generate power with a wide range of vibration frequencies. By converting vibration energy into electrical energy from mechanical vibration generated during operation by a mechanical facility such as a rotating body, even when the mechanical vibration is at a specific frequency of 50 Hz or 60 Hz, for example, this can be covered. Even if the frequency changes, power can be generated efficiently.

本発明の動吸振器構造（１３）では、両側又は複数の錘（１２）が取り付けられた支持板材（２４）は、支点部（２３）を支点として逆方向に回動（上下動）する。このとき支持板材（２４）はシーソー状態又は傾斜させて揺動することにより機械振動の運動エネルギーが抑制・吸収される（動吸振器効果）。そこで、この動吸振器効果によりワイヤレスセンサ（１１）に加わる振動を利用すると共に、圧電素子（１４）で運動エネルギーにより発電することで、そのままワイヤレスセンサ（１１）の電源として利用することができ、蓄電することもできる。 In the dynamic vibration absorber structure (13) of the present invention, the support plate (24) to which both sides or the plurality of weights (12) are attached rotates (moves up and down) in the reverse direction with the fulcrum part (23) as a fulcrum. At this time, the support plate member (24) is rocked in a seesaw state or tilted so that the kinetic energy of mechanical vibration is suppressed and absorbed (dynamic vibration absorber effect). Therefore, by using the vibration applied to the wireless sensor (11) by this dynamic vibration absorber effect, and generating electric power with kinetic energy by the piezoelectric element (14), it can be used as it is as a power source for the wireless sensor (11). It can also store electricity.

本発明のワイヤレスセンサ（１１）を用いた監視システム（４１）では、配線工事が不要になり、またバッテリを交換する必要もないので、従来よりも消費電力を大幅に削減することができ、保守に要する費用と時間の低減、装置の長寿命化を図ることができる。特に、監視システムを利用すれば、ワイヤレスセンサ（１１）を小型化することができ、様々な機器設備に設置することができる。 The monitoring system (41) using the wireless sensor (11) according to the present invention eliminates the need for wiring work and does not require replacement of the battery. The cost and time required for this can be reduced, and the life of the apparatus can be extended. In particular, if a monitoring system is used, the wireless sensor (11) can be downsized and installed in various equipment facilities.

本発明のワイヤレスセンサ（１１）を用いた監視システムでは、ワイヤレスセンサ（１１）を回転機器等の機械設備に限定されず、工場やビルなどの機械設備であっても振動する箇所であれば、このワイヤレスセンサ（１１）を備えることによって、その工場やビルなどの機械設備の運転状態と異常の有無を監視することができる。しかも複数の機械設備があるときは、異常が発見された機械設備を容易に特定することができる。
更に、ワイヤレスセンサ（１１）は、振動センサ以外に、温度、圧力、流量などセンサを取り付けることで物理量データをワイヤレス送受信することができ、監視する領域を広範囲に広げることもできる。 In the monitoring system using the wireless sensor (11) of the present invention, the wireless sensor (11) is not limited to mechanical equipment such as a rotating device, and even if it is a place that vibrates even in mechanical equipment such as a factory or a building, By providing this wireless sensor (11), it is possible to monitor the operating state of the machine equipment such as the factory or building and the presence or absence of an abnormality. In addition, when there are a plurality of mechanical facilities, it is possible to easily identify the mechanical facility where the abnormality is found.
Furthermore, the wireless sensor (11) can transmit and receive physical quantity data wirelessly by attaching sensors such as temperature, pressure, and flow rate in addition to the vibration sensor, and can also widen the monitoring area.

本発明のワイヤレスセンサを用いた監視方法では、ワイヤレスセンサ（１１）の発電により、機械設備の振動値を基準にしてデータ送信する時間の間隔を変化させることができる。機械設備の振動値が所定の基準値より大きい場合は、発電量が大きくなりデータ送信間隔を短くすることで、注意状態にあることを知らせることができる。一方、機械設備の振動値が所定の基準値より小さい場合は、発電量が小さくなるが、注意状態にないためデータ送信間隔を長くしても問題はない。このように機械設備の振動値に応じた監視、データ送信をすることで、電力を無駄に消費しなくても、十分な監視が可能になる。 In the monitoring method using the wireless sensor of the present invention, the time interval of data transmission can be changed based on the vibration value of the mechanical equipment by the power generation of the wireless sensor (11). When the vibration value of the mechanical equipment is larger than a predetermined reference value, the power generation amount is increased and the data transmission interval is shortened, so that it is possible to notify that the user is in a caution state. On the other hand, when the vibration value of the mechanical equipment is smaller than the predetermined reference value, the amount of power generation is reduced. However, since there is no caution state, there is no problem even if the data transmission interval is increased. In this way, by performing monitoring and data transmission according to the vibration value of the mechanical equipment, sufficient monitoring can be performed without wasting power.

実施例１の発電機能を有するワイヤレスセンサのカバーを外した状態を示す正面図である。It is a front view which shows the state which removed the cover of the wireless sensor which has an electric power generation function of Example 1. FIG. 図１のＢ−Ｂ線断面図である。It is the BB sectional view taken on the line of FIG. 発電部の動吸振器構造の原理を示す概略説明図である。It is a schematic explanatory drawing which shows the principle of the dynamic vibration absorber structure of an electric power generation part. 機械振動発電による周波数と発電出力の関係を示すグラフであり、（ａ）は従来の動吸振器構造がない場合、（ｂ）は動吸振器構造を備えた場合である。It is a graph which shows the relationship between the frequency by mechanical vibration power generation, and a power generation output, (a) is a case where there is no conventional dynamic vibration absorber structure, (b) is a case where a dynamic vibration absorber structure is provided. 実施例１のワイヤレスセンサの動吸振器構造による機械振動値が大きいときの発電部の発電時間と発生電圧との関係を示すグラフである。It is a graph which shows the relationship between the electric power generation time of a power generation part, and the generated voltage when the mechanical vibration value by the dynamic vibration damper structure of the wireless sensor of Example 1 is large. 実施例１のワイヤレスセンサの動吸振器構造による機械振動値が小さいときの発電部の発電部の発電時間と発生電圧との関係を示すグラフである。It is a graph which shows the relationship between the electric power generation time of the electric power generation part of a power generation part when a mechanical vibration value by the dynamic vibration absorber structure of the wireless sensor of Example 1 is small, and a generated voltage. 実施例１の動吸振器構造による発電部の周波数特性を示すグラフである。It is a graph which shows the frequency characteristic of the electric power generation part by the dynamic vibration damper structure of Example 1. FIG. 実施例１のワイヤレスセンサの発電部の動吸振器構造の圧電素子の配置を変えた変形例１を示す概略正面図である。It is a schematic front view which shows the modification 1 which changed arrangement | positioning of the piezoelectric element of the dynamic vibration absorber structure of the electric power generation part of the wireless sensor of Example 1. FIG. 実施例１のワイヤレスセンサの発電部の動吸振器構造の圧電素子の配置を変えた変形例２を示す概略正面図である。It is a schematic front view which shows the modification 2 which changed arrangement | positioning of the piezoelectric element of the dynamic vibration absorber structure of the electric power generation part of the wireless sensor of Example 1. FIG. 実施例１のワイヤレスセンサの発電部の動吸振器構造の圧電素子の配置を変えた変形例３を示す概略正面図である。It is a schematic front view which shows the modification 3 which changed arrangement | positioning of the piezoelectric element of the dynamic vibration absorber structure of the electric power generation part of the wireless sensor of Example 1. FIG. 実施例１のワイヤレスセンサの発電部の動吸振器構造の錘の個数の変形例４を示す概略平面図である。It is a schematic plan view which shows the modification 4 of the number of weights of the dynamic vibration absorber structure of the electric power generation part of the wireless sensor of Example 1. FIG. 実施例１のワイヤレスセンサの発電部の動吸振器構造の錘の個数の変形例５を示す概略平面図である。It is a schematic plan view which shows the modification 5 of the number of weights of the dynamic vibration absorber structure of the electric power generation part of the wireless sensor of Example 1. FIG. 実施例２のワイヤレスセンサを用いた監視システムの構成を示すシステム構成図である。It is a system configuration | structure figure which shows the structure of the monitoring system using the wireless sensor of Example 2. FIG. 実施例３のワイヤレスセンサを用いた監視方法の作業の流れを示すフローチャートである。10 is a flowchart illustrating a work flow of a monitoring method using a wireless sensor according to a third embodiment. 実施例３のワイヤレスセンサを用いた監視方法における機械振動の大きさによるデータ送信間隔の違いを示すグラフである。It is a graph which shows the difference in the data transmission interval by the magnitude | size of the mechanical vibration in the monitoring method using the wireless sensor of Example 3. FIG. 実施例３のワイヤレスセンサを用いた監視方法における機械振動の大きさとデータ送信間隔を示すグラフである。It is a graph which shows the magnitude | size of a mechanical vibration and the data transmission interval in the monitoring method using the wireless sensor of Example 3.

本発明のワイヤレスセンサは、機械設備の振動を利用しながら錘に伝播する動吸振器構造と、錘の振動を電気エネルギーに変換する圧電素子とから成る発電部と、機械設備から発生する振動を感知して検出信号を出力するセンサ部と、センサ部が出力する検出信号を無線で外部と送受信する送受信部と、を備えたセンサである。 The wireless sensor of the present invention includes a dynamic vibration absorber structure that propagates to a weight using vibrations of mechanical equipment, a power generation unit that includes a piezoelectric element that converts vibrations of the weight into electrical energy, and vibrations generated from the mechanical equipment. a sensor unit for outputting a detection signal by sensing a transceiver for external transmission and reception of the detection signal by radio the sensor unit outputs a sensor with a.

以下、本発明の実施の形態を図面を参照して説明する。
＜ワイヤレスセンサの構成＞
図１は実施例１の発電機能を有するワイヤレスセンサのカバーを外した状態を示す正面図である。図２は図１のＢ−Ｂ線断面図である。図３は発電部の動吸振器構造の原理を示す概略説明図である。
実施例１の発電機能を有するワイヤレスセンサ１１は、回転機器などの機械設備（図示していない）の振動を利用しながら錘１２に伝播する動吸振器構造１３と、この錘１２の振動を利用して電気エネルギーに変換する圧電素子１４とから成る発電部１５と、機械設備から発生する運転状態と異常を感知して検出信号を出力するセンサ部１６と、このセンサ部１６が出力する検出信号を無線で外部と送受信する送受信部１７と、を備えた装置である。ワイヤレスセンサ１１は、文字通りワイヤレスで機械設備の運転状態と異常の有無について監視する装置である。ここでワイヤレスは無線で検出信号を外部と送受信することと、電源用の配線も必要としないことを意味する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Configuration of wireless sensor>
FIG. 1 is a front view illustrating a state in which a cover of a wireless sensor having a power generation function according to the first embodiment is removed. 2 is a cross-sectional view taken along line BB in FIG. FIG. 3 is a schematic explanatory view showing the principle of the dynamic vibration absorber structure of the power generation unit.
The wireless sensor 11 having a power generation function according to the first embodiment uses a dynamic vibration absorber structure 13 that propagates to the weight 12 while using vibrations of mechanical equipment (not shown) such as a rotating device, and uses the vibration of the weight 12. The power generation unit 15 including the piezoelectric element 14 that converts the electric energy into electrical energy, the sensor unit 16 that senses the operating state and abnormality generated from the mechanical equipment and outputs a detection signal, and the detection signal output by the sensor unit 16 Is a device including a transmission / reception unit 17 that wirelessly transmits / receives data to / from the outside. The wireless sensor 11 is a device that literally wirelessly monitors the operation state of the mechanical equipment and the presence or absence of an abnormality. Here, wireless means that a detection signal is transmitted and received wirelessly, and wiring for a power supply is not required.

発電部１５は、ワイヤレスセンサ１１の支持台１８と、その上方のセンサ部１６と送受信部１７を載せる載置板１９との間に配置する。この支持台１８と載置板１９は複数本の支柱２０で連結する。この支柱２０は機械設備の振動を支持台１８からセンサ部１６が備えられた載置板１９に伝播する重要な部材である。 The power generation unit 15 is disposed between the support base 18 of the wireless sensor 11 and the mounting plate 19 on which the sensor unit 16 and the transmission / reception unit 17 thereabove are placed. The support base 18 and the mounting plate 19 are connected by a plurality of support columns 20. The column 20 is an important member that propagates the vibration of the mechanical equipment from the support base 18 to the mounting plate 19 provided with the sensor unit 16.

これらの発電部１５は、センサ部１６と送受信部１７はカバー２１で覆うようになっている。このカバー２１でほこり、水分が浸入しないようになっている。支持台１８の下部には機械設備に取り付ける際に利用する連結部２２が設けられている。なお、図示例ではワイヤレスセンサ１１の下部に発電部１５を、その上部にセンサ部１６と送受信部１７とを配置したものを示しているが、このような配置に限定されない。この配置と逆に上部に発電部１５を、下部にセンサ部１６と送受信部１７とを配置したもの、あるいは発電部１５と、これにセンサ部１６と送受信部１７を並列配置したものでも良い。 These power generation unit 15, sensor unit 16 and the transmitting and receiving unit 17 is adapted to cover with a cover 21. The cover 21 prevents dust and moisture from entering. A connecting portion 22 is provided at the lower portion of the support base 18 to be used when attaching to the mechanical equipment. In the illustrated example, the power generation unit 15 is disposed below the wireless sensor 11, and the sensor unit 16 and the transmission / reception unit 17 are disposed above the wireless sensor 11. However, the present invention is not limited to such an arrangement. Contrary to this arrangement, the power generation unit 15 may be disposed in the upper part, and the sensor unit 16 and the transmission / reception unit 17 may be disposed in the lower part, or the power generation unit 15 may be disposed in parallel with the sensor unit 16 and the transmission / reception unit 17.

＜発電部１５の構成＞
発電部１５は、機械設備の振動で錘１２が振動し、この振動エネルギーを電気エネルギーに変換する圧電素子１４とから成る。本発明ではこの機械設備の振動について動吸振器構造１３を用いて、動吸振器効果によりその振動を利用しながら錘１２に伝播するようにして、効率よく発電するようになっている。 <Configuration of power generation unit 15>
The power generation unit 15 includes a piezoelectric element 14 that vibrates the weight 12 due to vibration of mechanical equipment and converts the vibration energy into electric energy. In the present invention, the vibration of the mechanical equipment is generated by using the dynamic vibration absorber structure 13 so as to propagate to the weight 12 while utilizing the vibration by the dynamic vibration absorber effect.

動吸振器構造１３は、図３の原理説明図に示すように、錘１２の振動を抑制する装置である。この動吸振器構造１３は、支持台１８の中間に取り付けられた支点部２３に支持板材２４が、この支点部２３を中心にしてシーソー状に揺動自在に支持されている。この支持板材２４の両側に一対の錘１２が取り付けられている。この支持板材２４の揺動により、２個の錘１２は上下動する。この錘１２の上下動方向に沿って、作動子２５が支持板材２４に下方へ向けて取り付けられている。この作動子２５の先端（下端）は圧電素子１４を押圧しやすいような形状にすることが好ましい。なお、図示例では、支持板材２４の下面に作動子２５が取り付けられているが、支持板材２４が短いときは錘１２の底部に作動子２５を直接取り付けてもよい。 The dynamic vibration absorber structure 13 is a device that suppresses the vibration of the weight 12 as shown in the principle explanatory diagram of FIG. 3. In the dynamic vibration absorber structure 13, a support plate member 24 is supported on a fulcrum part 23 attached in the middle of a support base 18 so as to be swingable in a seesaw shape around the fulcrum part 23. A pair of weights 12 are attached to both sides of the support plate 24. The two weights 12 move up and down by the swinging of the support plate member 24. Along with the vertical movement direction of the weight 12, the operating element 25 is attached to the support plate member 24 downward. The tip (lower end) of the actuator 25 is preferably shaped so as to easily press the piezoelectric element 14. In the illustrated example, the operating element 25 is attached to the lower surface of the support plate material 24. However, when the support plate material 24 is short, the operating element 25 may be directly attached to the bottom of the weight 12.

各作動子２５の先端（下端）に配置される圧電素子１４は、支持台１８の２か所に取り付けられている。圧電素子１４の取付箇所は錘１２の個数と比例する。この錘１２の個数は２個に限定されず、１個でも可能なので、後述するように、３個、４個・・と用いることができる。勿論この個数に比例して、圧電素子１４も３個、４個・・と必要になる。 The piezoelectric elements 14 arranged at the tip (lower end) of each actuator 25 are attached to two places on the support base 18. The attachment location of the piezoelectric element 14 is proportional to the number of weights 12. The number of weights 12 is not limited to two, and can be one. Therefore, as will be described later, three, four,... Can be used. Of course, three, four,... Are required in proportion to this number.

このように構成された動吸振器構造１３では、図３の原理図に示すように、回転体等の機械設備による運転時に発生する機械振動の振動エネルギーを電気エネルギーに変換し、例えば機械振動の特定周波数５０Hzから６０Hzのように幅があってもカバーし、機械設備の回転数の変化による周波数変化が起きても、錘１２に伝播する振動を抑制することにより正常に電源装置として機能する。 In the dynamic vibration absorber structure 13 configured in this way, as shown in the principle diagram of FIG. 3, vibration energy of mechanical vibration generated during operation by a mechanical facility such as a rotating body is converted into electric energy. Even if there is a width such as a specific frequency of 50 Hz to 60 Hz, even if there is a frequency change due to a change in the number of rotations of the mechanical equipment, it functions normally as a power supply device by suppressing vibration propagating to the weight 12.

本発明のワイヤレスセンサ１１では、センサ自体に発電機能が備えられているので、従来のように配線工事が不要になり、またバッテリを交換する必要もない。その費用的な面だけでなく、危険な場所に設置された機械設備の監視に適している。また、太陽光発電が利用できない屋内又は暗闇に設置された機械設備の監視にも適している。 In the wireless sensor 11 of the present invention, since the power generation function is provided in the sensor itself, wiring work is not required as in the prior art, and there is no need to replace the battery. In addition to its cost, it is suitable for monitoring machinery and equipment installed in hazardous locations. It is also suitable for monitoring machinery or equipment installed indoors or in the dark where solar power generation is not available.

＜センサ部１６の構成＞
センサ部１６には、機械設備の運転状態、異常を感知するセンサ２６が備えられている。主に、この機械設備から発生する振動を感知して検出信号を出力し、その機械設備の振動状態や異常を監視するセンサを用いる。例えば、ワイヤレスセンサ１１に振動が伝播すれば十分であるため、センサ部１６には主に接触型の加速度検出型振動センサ（圧電型、静電容量型、ひずみゲージ型）、速度検出型振動センサ（動電型）を用いる。 <Configuration of sensor unit 16>
The sensor unit 16 is provided with a sensor 26 that senses the operating state and abnormality of the mechanical equipment. Mainly, a sensor that senses the vibration generated from the mechanical equipment and outputs a detection signal to monitor the vibration state or abnormality of the mechanical equipment is used. For example, since it is sufficient that the vibration propagates to the wireless sensor 11, the sensor unit 16 mainly includes a contact type acceleration detection type vibration sensor (piezoelectric type, capacitance type, strain gauge type), a speed detection type vibration sensor. (Electric type) is used.

本発明のワイヤレスセンサ１１は機械設備（回転機器）の振動を検出すると共に、その振動を利用して発電するものであるが、センサ部１６は非接触型センサを用いることも可能である。即ち、振動を感知できるセンサであれば種々の形態のセンサを用いることができる。また、振動センサ以外に、温度センサ、圧力センサ、流量センサなどの一般的な工業用センサを備えることも可能である。 The wireless sensor 11 of the present invention detects vibrations of mechanical equipment (rotary equipment) and generates electric power using the vibrations, but the sensor unit 16 can also use a non-contact type sensor. That is, various types of sensors can be used as long as they can sense vibration. In addition to the vibration sensor, a general industrial sensor such as a temperature sensor, a pressure sensor, or a flow rate sensor can be provided.

＜送受信部１７の構成＞
送受信部１７はセンサ部１６が出力する検出信号を無線で外部と送受信する無線モジュールが備えられている。この送受信部１７（無線モジュール）からの検出信号を例えば監視装置４３が受信する。この監視装置４３により機械設備の運転状態と異常感知の有無を監視することができる。 <Configuration of Transmitter / Receiver 17>
The transceiver unit 17 includes a wireless module that wirelessly transmits and receives the detection signal output from the sensor unit 16 to the outside. For example, the monitoring device 43 receives the detection signal from the transmission / reception unit 17 (wireless module). With this monitoring device 43, it is possible to monitor the operating state of the mechanical equipment and the presence or absence of abnormality detection.

＜機械振動発電による周波数と発電出力の関係＞
図４は機械振動発電による機械振動の周波数と発電出力の関係を示すグラフであり、（ａ）は従来の動吸振器構造がない場合、（ｂ）は動吸振器構造を備えた場合である。
図４（ａ）の従来の場合に示すように、機械振動発電のように発電電源として特定周波数（５０Hzまたは６０Hz）に合わせた発電装置では、特定周波数中心から少しでも逸脱すると発電能力が極端に低下する。本発明の実施例１のワイヤレスセンサ１１のように動吸振器構造１３を備えた発電部１５を有する装置では、図４（ｂ）に示すように、機械振動が発電の特定周波数からズレても、必要量の発電が可能である。振動周波数が５０Hzから６０Hzの場合でもエネルギーとして必要なレベルの出力が可能になる。 <Relationship between mechanical vibration power generation frequency and power generation output>
FIG. 4 is a graph showing the relationship between the frequency of mechanical vibration generated by mechanical vibration power generation and the power generation output. FIG. 4A shows a case where there is no conventional dynamic vibration absorber structure, and FIG. 4B shows a case where a dynamic vibration absorber structure is provided. .
As shown in the conventional case of FIG. 4 (a), in a power generation device adapted to a specific frequency (50 Hz or 60 Hz) as a power generation power source such as mechanical vibration power generation, the power generation capacity becomes extremely large if it deviates slightly from the specific frequency center. descend. In the apparatus having the power generation unit 15 including the dynamic vibration absorber structure 13 like the wireless sensor 11 according to the first embodiment of the present invention, as shown in FIG. 4B, even if the mechanical vibration deviates from the specific frequency of power generation. The required amount of power generation is possible. Even when the vibration frequency is 50 Hz to 60 Hz, it is possible to output a level required as energy.

＜機械振動発電による発電時間と発生電圧の関係＞
図５は実施例１のワイヤレスセンサの動吸振器構造による機械振動値が大きいときの発電部の発電時間と発生電圧との関係を示すグラフである。図６は実施例１のワイヤレスセンサの動吸振器構造による機械振動値が小さいときの発電部の発電時間と発生電圧との関係を示すグラフである。図７は実施例１の動吸振器構造による発電部の周波数特性を示すグラフである。
図５は加振周波数が６０Hｚ６mm/sの場合の発生電圧を示し、発電時間が１０分程度で５．０ＶＤＣの電圧を発生させることができる。図６は加振周波数が６０Hｚ２mm/sの場合の発生電圧を示し、発電時間を４０分程度にすると５．０ＶＤＣの電圧を発生させることができる。図７は動吸振器構造１３による発電部１５の周波数特性のグラフを示し、機械振動の特定周波数５０Hzおよび６０Hzをカバーして、機械振動の変化による周波数変化が起きても正常に電源装置として機能する動吸振器構造により振動計測を行うことができる。 <Relationship between power generation time by mechanical vibration power generation and generated voltage>
FIG. 5 is a graph showing the relationship between the power generation time of the power generation unit and the generated voltage when the mechanical vibration value by the dynamic vibration absorber structure of the wireless sensor of Example 1 is large. FIG. 6 is a graph showing the relationship between the power generation time of the power generation unit and the generated voltage when the mechanical vibration value by the dynamic vibration absorber structure of the wireless sensor of Example 1 is small. FIG. 7 is a graph showing the frequency characteristics of the power generation unit using the dynamic vibration absorber structure of the first embodiment.
FIG. 5 shows a generated voltage when the excitation frequency is 60 Hz 6 mm / s, and a voltage of 5.0 VDC can be generated in a power generation time of about 10 minutes. FIG. 6 shows the generated voltage when the excitation frequency is 60 Hz 2 mm / s. When the power generation time is about 40 minutes, a voltage of 5.0 VDC can be generated. FIG. 7 shows a graph of the frequency characteristics of the power generation unit 15 by the dynamic vibration absorber structure 13, which covers the specific frequencies of mechanical vibration 50 Hz and 60 Hz, and functions normally as a power supply device even if a frequency change occurs due to a change in mechanical vibration. Vibration measurement can be performed by the dynamic vibration absorber structure.

＜動吸振器構造の変形例１＞
図８は実施例１のワイヤレスセンサの発電部の動吸振器構造の圧電素子の配置を変えた変形例１を示す概略正面図である。
ワイヤレスセンサ１１の発電部１５は、動吸振器構造１３を構成する錘１２の下部に圧電素子１４を配置する構成に限定されない。振動する錘１２で作動子２５が圧電素子１４を押圧する構成であればよい。そこで、図８に示すように錘１２の上部に圧電素子１４を配置することもできる。このような配置であっても、錘１２の振動により作動子２５が圧電素子１４を押圧すれば発電することができる。 <Modification 1 of dynamic vibration absorber structure>
FIG. 8 is a schematic front view illustrating a first modification in which the arrangement of the piezoelectric elements of the dynamic vibration absorber structure of the power generation unit of the wireless sensor according to the first embodiment is changed.
The power generation unit 15 of the wireless sensor 11 is not limited to the configuration in which the piezoelectric element 14 is disposed below the weight 12 that configures the dynamic vibration absorber structure 13. Any configuration may be used as long as the actuator 25 presses the piezoelectric element 14 with the vibrating weight 12. Therefore, as shown in FIG. 8, the piezoelectric element 14 can be arranged on the upper portion of the weight 12. Even with such an arrangement, power can be generated if the actuator 25 presses the piezoelectric element 14 by the vibration of the weight 12.

＜動吸振器構造の変形例２，３＞
図９は実施例１のワイヤレスセンサの発電部の動吸振器構造の圧電素子の配置を変えた変形例２を示す概略正面図である。図１０は実施例１のワイヤレスセンサの発電部の動吸振器構造の圧電素子の配置を変えた変形例３を示す概略正面図である。
同様に、図９に示すように錘１２の外側部に圧電素子１４を配置することもできる。このような配置であっても、錘１２の作動子２５が圧電素子１４を押圧すれば発電することができる。更に、図１０に示すように１対の錘１２で、２個に圧電素子１４を挟むように配置することもできる。このような配置であっても、錘１２の作動子２５が圧電素子１４を押圧すれば発電することができる。 <Modifications 2 and 3 of the dynamic vibration absorber structure>
FIG. 9 is a schematic front view illustrating a second modification in which the arrangement of the piezoelectric elements of the dynamic vibration absorber structure of the power generation unit of the wireless sensor according to the first embodiment is changed. FIG. 10 is a schematic front view illustrating a third modification in which the arrangement of the piezoelectric elements of the dynamic vibration absorber structure of the power generation unit of the wireless sensor according to the first embodiment is changed.
Similarly, as shown in FIG. 9, the piezoelectric element 14 can be disposed on the outer side of the weight 12. Even with such an arrangement, power can be generated if the actuator 25 of the weight 12 presses the piezoelectric element 14. Further, as shown in FIG. 10, a pair of weights 12 may be arranged so that two piezoelectric elements 14 are sandwiched therebetween. Even with such an arrangement, power can be generated if the actuator 25 of the weight 12 presses the piezoelectric element 14.

＜動吸振器構造の変形例４＞
図１１は実施例１のワイヤレスセンサの発電部の動吸振器構造の錘の個数の変形例４を示す概略平面図である。
動吸振器構造１３を構成する錘１２は1対即ち２個に限定されない。図１１に示すように３個の錘１２を、三角形状の支持板材２８に取り付けた構成でもよい。このときは３個の錘１２が支点部２３で平衡に支持されるように取り付ける。３個の各錘１２の個数に相応するように３か所の圧電素子１４を配置する。３個の各錘１２に作動子２５を取り付け、各作動子２５がそれぞれの圧電素子１４に当たるようにする。このような構成であっても、振動に際して発電することができる。 <Modification 4 of dynamic vibration absorber structure>
FIG. 11 is a schematic plan view illustrating a fourth modification of the number of weights of the dynamic vibration absorber structure of the power generation unit of the wireless sensor according to the first embodiment.
The weights 12 constituting the dynamic vibration absorber structure 13 are not limited to one pair, that is, two. As shown in FIG. 11, three weights 12 may be attached to a triangular support plate material 28. At this time, the three weights 12 are attached so as to be supported in equilibrium by the fulcrum portion 23. Three piezoelectric elements 14 are arranged so as to correspond to the number of the three weights 12. Actuators 25 are attached to each of the three weights 12 so that each of the actuators 25 hits the respective piezoelectric element 14. Even with such a configuration, power can be generated during vibration.

＜動吸振器構造の変形例５＞
図１２実施例１のワイヤレスセンサの発電部の動吸振器構造の錘の個数の変形例５を示す概略平面図である。
動吸振器構造１３を構成する錘１２を図１２に示すように４個の錘１２を、正方形状の支持板材２９に取り付けた構成でもよい。このときも４個の錘１２が支点部２３で平衡に支持されるように取り付ける。これも前述したように、４個の各錘１２の作動子２５を取り付け、圧電素子１４に当たるようにする。更に、５個、６個と錘１２の個数は図示例に限定されない。 <Modification 5 of dynamic vibration absorber structure>
12 is a schematic plan view showing a fifth modification of the number of weights of the dynamic vibration absorber structure of the power generation unit of the wireless sensor of the first embodiment.
The weight 12 constituting the dynamic vibration absorber structure 13 may be configured such that four weights 12 are attached to a square support plate material 29 as shown in FIG. At this time, the four weights 12 are attached so as to be supported by the fulcrum portion 23 in a balanced manner. As described above, the four actuators 25 of the respective weights 12 are attached so as to contact the piezoelectric element 14. Furthermore, the number of the 5, 6 and weights 12 is not limited to the illustrated example.

＜ワイヤレスセンサを用いた監視システムの構成＞
図１３は実施例２のワイヤレスセンサを用いた監視システムを示すシステム構成図である。
実施例２のワイヤレスセンサを用いた監視システム４１は、実施例１の発電機能を有するワイヤレスセンサ１１を用いて、機械設備の振動変化を感知して、運転状態と異常感知の有無をワイヤレスで監視するシステムである。
このワイヤレス監視システム４１は、センサ部１６と送受信部１７とが備えられたワイヤレスセンサ１１と、センサ部１６で検出した検出信号その他の機械設備に関する情報データを送受信する送受信部１７と、この検出信号等のデータを送受信部４２で受信して、この情報に基づいて、機械設備の運転状態と異常感知の有無を監視する監視装置４３とから構成されたシステムである。
なお、監視する対象の機械設備が複数あるとき、又は１台の機械設備に監視する箇所が複数あるときは、複数のワイヤレスセンサ１１を設置し、監視装置４３はそのワイヤレスセンサ１１の設置場所と共にその異常感知の有無を監視する。 <Configuration of monitoring system using wireless sensor>
FIG. 13 is a system configuration diagram illustrating a monitoring system using the wireless sensor of the second embodiment.
The monitoring system 41 using the wireless sensor of the second embodiment uses the wireless sensor 11 having the power generation function of the first embodiment to detect the vibration change of the mechanical equipment and monitor the operation state and the presence / absence of abnormality detection wirelessly. System.
The wireless monitoring system 41 includes a wireless sensor 11 provided with a sensor unit 16 and a transmission / reception unit 17, a transmission / reception unit 17 that transmits / receives a detection signal detected by the sensor unit 16 and other information related to mechanical equipment, and the detection signal This is a system that includes a monitoring device 43 that receives the data such as the transmission / reception unit 42 and monitors the operating state of the mechanical equipment and the presence / absence of abnormality detection based on this information.
In addition, when there are a plurality of machine facilities to be monitored or when there are a plurality of locations to be monitored in one machine facility, a plurality of wireless sensors 11 are installed, and the monitoring device 43 is installed together with the installation location of the wireless sensors 11 The presence or absence of the abnormality is monitored.

ワイヤレスセンサ１１に備えられた発電部１５で発電し、充電部４４で充電される。この充電部４４に充電された電力は、センサ部１６における検出と、送受信部１７の送受信の際の電源として利用される。更に、実施例２のワイヤレス監視システム４１を駆動する制御部４５、センサスイッチ部４６の駆動の電源としても利用される。 Electric power is generated by the power generation unit 15 provided in the wireless sensor 11 and charged by the charging unit 44. The electric power charged in the charging unit 44 is used as a power source for detection in the sensor unit 16 and transmission / reception of the transmission / reception unit 17. Further, it is also used as a power source for driving the control unit 45 and the sensor switch unit 46 that drive the wireless monitoring system 41 of the second embodiment.

この監視システム４１は、発電部１５とセンサ部１６の制御回路、ＲＡＭ、ＲＯＭの記憶回路、演算回路による中央処理部（ＣＰＵ）（制御部４５）と共に、送受信部１７の無線モジュールとを装備している。この無線モジュール（送受信部１７）により、センサ部１６の振動センサ（センサ部１６）及びその他のセンサ（センサ部１６）で機械設備から発生する振動又はその他のデータを感知して検出信号を出力し、この検出信号を監視装置４３の送受信部４２に送受信する。この監視装置４３では、機械設備から発生する振動に基づく運転状態と異常の有無を感知する。制御部４５にはリアルタイムクロック４７が備えられている。 The monitoring system 41 includes a control circuit for the power generation unit 15 and the sensor unit 16, a storage circuit for RAM and ROM, a central processing unit (CPU) (control unit 45) using an arithmetic circuit, and a wireless module for the transmission / reception unit 17. ing. By this wireless module (transmission / reception unit 17), the vibration sensor (sensor unit 16) of the sensor unit 16 and other sensors (sensor unit 16) sense vibrations or other data generated from the mechanical equipment and output detection signals. The detection signal is transmitted to and received from the transmission / reception unit 42 of the monitoring device 43. The monitoring device 43 senses the operating state based on vibrations generated from the mechanical equipment and the presence / absence of an abnormality. The control unit 45 is provided with a real time clock 47.

ワイヤレスセンサ１１に備えられた発電部１５で発電し、充電部４４で充電される。充電部４４は例えばコンデンサによって構成される。この充電部４４に充電された電力は、センサ部１６における検出と、送受信部１７の送受信の際の電源として利用される。更に、実施例２のワイヤレス監視システム４１を駆動する制御部４５、センサスイッチ部４６の駆動の電源としても利用される。発電部１５において錘１２の振動によって交流電荷を発生し、この発生した交流電荷を直流電圧に変換し、直流変換部（ＤＣ／ＤＣ）４８でセンサ部１６、送受信部１７と制御部４５の駆動電圧に変換して給電する。 Electric power is generated by the power generation unit 15 provided in the wireless sensor 11 and charged by the charging unit 44. The charging unit 44 is constituted by a capacitor, for example. The electric power charged in the charging unit 44 is used as a power source for detection in the sensor unit 16 and transmission / reception of the transmission / reception unit 17. Further, it is also used as a power source for driving the control unit 45 and the sensor switch unit 46 that drive the wireless monitoring system 41 of the second embodiment. In the power generation unit 15, AC charges are generated by the vibration of the weight 12, the generated AC charges are converted into a DC voltage, and the DC conversion unit (DC / DC) 48 drives the sensor unit 16, the transmission / reception unit 17, and the control unit 45. Power is converted to voltage.

センサスイッチ部４６は、センサ部１６と送受信部１７を作動させ、停止する機能を有する。このセンサスイッチ部４６がＯＮ状態のときに、充電部４４の電力をセンサ部１６と送受信部１７に供給可能とし、センサスイッチ部４６がＯＦＦ状態の時に充電部４４の電力供給を停止するように構成されている。 The sensor switch unit 46 has a function of operating and stopping the sensor unit 16 and the transmission / reception unit 17. When the sensor switch unit 46 is in the ON state, the power of the charging unit 44 can be supplied to the sensor unit 16 and the transmission / reception unit 17, and when the sensor switch unit 46 is in the OFF state, the power supply of the charging unit 44 is stopped. It is configured.

このセンサスイッチ部４６は、判定部４７により充電部４４が発電部１５で発電量が一定の規定値を越えたときに、ＯＮとＯＦＦとを切り替えることを判定する。 The sensor switch unit 46 determines that the determination unit 47 switches between ON and OFF when the charging unit 44 exceeds the predetermined value at the power generation unit 15.

センサスイッチ部４６は、センサ部１６と送受信部１７を作動させ、停止する機能を有する。このセンサスイッチ部４６がＯＮ状態のときに、充電部４４の電力をセンサ部１６と送受信部１７に供給可能とし、センサスイッチ部４６がＯＦＦ状態の時に充電部４４の電力供給を停止するように構成されている。センサ部１６と送受信部１７は、センサスイッチ部４６を介して充電部４４に充電された電力が所定の電力量に達した場合にも起動される。 The sensor switch unit 46 has a function of operating and stopping the sensor unit 16 and the transmission / reception unit 17. When the sensor switch unit 46 is in the ON state, the power of the charging unit 44 can be supplied to the sensor unit 16 and the transmission / reception unit 17, and when the sensor switch unit 46 is in the OFF state, the power supply of the charging unit 44 is stopped. It is configured. The sensor unit 16 and the transmission / reception unit 17 are also activated when the power charged in the charging unit 44 via the sensor switch unit 46 reaches a predetermined amount of power.

監視装置４３は、ワイヤレスセンサ１１の送受信部１７からの送信データを受信する送受信部４２と、この送受信部４２に接続されたコンピュータ４９によって構成されている。コンピュータ４９は、送受信部４２が受信した受信データを取得し、ワイヤレスセンサ１１が取得した機械設備の運転状態の表示や各種設定を行う。 The monitoring device 43 includes a transmission / reception unit 42 that receives transmission data from the transmission / reception unit 17 of the wireless sensor 11, and a computer 49 connected to the transmission / reception unit 42. The computer 49 acquires the reception data received by the transmission / reception unit 42, and displays the operation state of the mechanical equipment acquired by the wireless sensor 11 and various settings.

更に、ワイヤレスセンサ１１は、振動センサ以外に、温度、圧力、流量などセンサを取り付けることで物理量データをワイヤレス送受信することができ、監視する領域を広範囲に広げることもできる。 Furthermore, the wireless sensor 11 can transmit and receive physical quantity data wirelessly by attaching sensors such as temperature, pressure, and flow rate in addition to the vibration sensor, and can also widen the monitoring area.

また、このワイヤレスセンサ１１を用いた監視システムでは、ワイヤレスセンサ１１を回転機器等の機械設備に限定されず、工場やビルなどの機械設備であって振動する箇所であれば、このワイヤレスセンサ１１をそれぞれに備えることによって、工場やビルなどの機械設備の運転状態と異常の有無を監視することができる上に、異常が見つかった場所を容易に特定することができる。 Further, in the monitoring system using the wireless sensor 11, the wireless sensor 11 is not limited to mechanical equipment such as a rotating device, and the wireless sensor 11 is used if it is a mechanical equipment such as a factory or a building and vibrates. By preparing for each, it is possible to monitor the operating state of a machine facility such as a factory or a building and the presence or absence of an abnormality, and to easily identify the location where the abnormality is found.

本発明のワイヤレスセンサ１１を用いた監視システム４１では、配線工事が不要になり、またバッテリを交換する必要もないので、従来よりも消費電力を大幅に削減することができ、保守に要する費用や時間の低減、装置の長寿命化を図ることができる。特に、監視システムを利用すれば、ワイヤレスセンサ１１を小型化することができ、様々な機器設備に設置することができる。 In the monitoring system 41 using the wireless sensor 11 of the present invention, no wiring work is required, and it is not necessary to replace the battery. Therefore, the power consumption can be greatly reduced as compared with the conventional system. The time can be reduced and the life of the apparatus can be extended. In particular, if a monitoring system is used, the wireless sensor 11 can be downsized and installed in various equipment.

＜ワイヤレスセンサを用いた監視方法の構成＞
図１４は実施例３のワイヤレスセンサを用いた監視方法の作業の流れを示すフローチャートである。図１５は実施例３のワイヤレスセンサを用いた監視方法における機械振動の大きさによるデータ送信間隔の違いを示すグラフである。図１６は機械振動の大きさとデータ送信間隔を示すグラフである。
実施例３のワイヤレスセンサを用いた監視方法は、発電部１５で発電する電力量が予め設定された規定値に達したときに、センサ部１６で機械設備の運転状態と異常の有無を感知して検出信号を出力し、その検出信号を無線で送受信部１７から送受信する方法である。この監視方法では、単に自動的に監視対象物の状況を知らせるだけでなく、発電部１５で発電する電力の発電状況、即ち監視対象物の機械設備の運転状態に応じて、センサ部１６と送受信部１７からの送受信する時間を異ならしめて監視している。 <Configuration of monitoring method using wireless sensor>
FIG. 14 is a flowchart illustrating a work flow of the monitoring method using the wireless sensor according to the third embodiment. FIG. 15 is a graph showing a difference in data transmission interval depending on the magnitude of mechanical vibration in the monitoring method using the wireless sensor of the third embodiment. FIG. 16 is a graph showing the magnitude of mechanical vibration and the data transmission interval.
According to the monitoring method using the wireless sensor of the third embodiment, when the amount of power generated by the power generation unit 15 reaches a preset specified value, the sensor unit 16 senses the operating state of the mechanical equipment and whether there is an abnormality. The detection signal is output, and the detection signal is transmitted and received wirelessly from the transmission / reception unit 17. In this monitoring method, not only the status of the monitoring target is automatically notified, but also the sensor unit 16 transmits and receives according to the power generation status of the power generated by the power generation unit 15, that is, the operating state of the machine equipment of the monitoring target. The transmission / reception time from the unit 17 is monitored differently.

予め設定された発電する電力量の規定値は、例えば、センサ部１６及びセンサ部１６を共に作動させることができる電力量である。図１３に示すように、発電部１５が機械振動により発電し、充電部４４に充電され、図示例では５．２Ｖに達したときに、センサ部１６と送受信部１７のセンサスイッチ部４６がＯＮ動作される。次に、センサ部１６と送受信部１７で電力が消費されて、３．５Ｖに低下したときに、センサ部１６と送受信部１７のセンサスイッチ部４６がＯＦＦ動作される。これにより、発電部１５で発電する電力量が予め設定された規定値（５．２Ｖ）に達したときに、センサ部１６で機械設備の運転状態と異常の有無を感知して検出信号を出力し、その検出信号を無線で送受信部１７からデータ送信する。 The preset specified value of the amount of power to be generated is, for example, the amount of power that can operate both the sensor unit 16 and the sensor unit 16. As shown in FIG. 13, when the power generation unit 15 generates power by mechanical vibration and is charged in the charging unit 44 and reaches 5.2 V in the illustrated example, the sensor switch unit 46 of the sensor unit 16 and the transmission / reception unit 17 is turned on. Be operated. Next, when power is consumed by the sensor unit 16 and the transmission / reception unit 17 and the voltage drops to 3.5 V, the sensor switch unit 46 of the sensor unit 16 and the transmission / reception unit 17 is turned off. As a result, when the amount of power generated by the power generation unit 15 reaches a preset specified value (5.2 V), the sensor unit 16 senses the operating state of the machinery and equipment and outputs a detection signal. Then, the detection signal is wirelessly transmitted from the transmission / reception unit 17.

このとき、図１５に示すように、機械設備の振動が小さく機械振動の周波数が６０Hzで２ｍｍ/sで加振のときは、発電部１５の発電する電力量が小さいので、規定値（５．２Ｖ）に達する時間が充電開始電圧（３．５Ｖ）から約２０分かかる。このとき５．２Ｖに達したときに、センサ部１６と送受信部１７のセンサスイッチ部４６がＯＮ動作され、検知と送受信される。３．５Ｖに低下したときに、センサ部１６と送受信部１７のセンサスイッチ部４６がＯＦＦ動作される。 At this time, as shown in FIG. 15, the frequency of the vibration is small mechanical vibrations of the machine equipment when the vibrated at 2 mm / s at 60 Hz, a small amount of power generation of the power generation unit 15, the specified value (5. It takes about 20 minutes from the charging start voltage (3.5V) to reach 2V). At this time, when the voltage reaches 5.2 V, the sensor switch unit 46 of the sensor unit 16 and the transmission / reception unit 17 is turned on, and detection and transmission / reception are performed. When the voltage drops to 3.5 V, the sensor unit 16 and the sensor switch unit 46 of the transmission / reception unit 17 are turned off.

一方、機械設備の振動が大きく機械振動の周波数が６０Hzで６ｍｍ/sで加振のときは、発電部１５の発電する電力量が大きいので、規定値（５．２Ｖ）に達する時間が充電開始電圧（３．５Ｖ）から約５分程度である。このときも５．２Ｖに達したときに、センサ部１６と送受信部１７のセンサスイッチ部４６がＯＮ動作され、検知と送受信される。３．５Ｖに低下したときに、センサ部１６と送受信部１７のセンサスイッチ部４６がＯＦＦ動作される。
なお、規定値の５．２Ｖ、３．５Ｖは一例であってこの数値に限定されない。ワイヤレスセンサ１１の装置が大きくなり、発電部１５の規模が大きくなれば、規定値の数値も大きくなり、逆にワイヤレスセンサ１１の装置が小さく、発電部１５の規模が小さければ、規定値の数値も小さくなる。 On the other hand, when the vibration of the mechanical equipment is large and the vibration frequency of the mechanical vibration is 60 mm and the vibration is 6 mm / s, since the amount of power generated by the power generation unit 15 is large, charging starts when the specified value (5.2 V) is reached. About 5 minutes from the voltage (3.5V). At this time, when the voltage reaches 5.2 V, the sensor switch unit 46 of the sensor unit 16 and the transmission / reception unit 17 is turned on, and detection and transmission / reception are performed. When the voltage drops to 3.5 V, the sensor unit 16 and the sensor switch unit 46 of the transmission / reception unit 17 are turned off.
The specified values of 5.2 V and 3.5 V are examples, and are not limited to these values. If the device of the wireless sensor 11 increases and the scale of the power generation unit 15 increases, the numerical value of the specified value also increases. Conversely, if the device of the wireless sensor 11 is small and the size of the power generation unit 15 decreases, the numerical value of the specified value Becomes smaller.

表１の機械振動の周波数と監視方法との関係に示すように、機械設備の機械振動が所定の基準値より小さい場合は、発電する電力量が小さくなるが、危険状態にないためデータ送信間隔を長くしても問題ない。一方、機械設備の機械振動が所定の基準値より大きい場合は、発電する電力量が大きくなりデータ送信間隔を短くすることで、異常のおそれ、危険状態にあることを知らせることができる。
このように機械設備の機械振動に応じた監視、データ送信をすることで、電力を無駄に消費せずに十分な監視が可能になる。 As shown in the relationship between the frequency of the machine vibration and the monitoring method in Table 1, when the machine vibration of the machine equipment is smaller than a predetermined reference value, the amount of power to be generated is small, but the data transmission interval because it is not in a dangerous state. There is no problem with lengthening. On the other hand, when the mechanical vibration of the mechanical equipment is larger than a predetermined reference value, the amount of power to be generated is increased and the data transmission interval is shortened, so that it is possible to notify that there is a risk of abnormality and a dangerous state.
Thus, by performing monitoring and data transmission according to the machine vibration of the mechanical equipment, sufficient monitoring can be performed without wasting power.

＜ワイヤレスセンサを用いた監視方法の変形例１＞
実施例３のワイヤレスセンサを用いた監視方法の変形例１は、センサ部１６で機械設備の運転状態と異常の有無を感知して検出信号を出力し、その検出信号を無線で送受信部１７から送受信する時間間隔を所定の時間で定期的に送受信する方法である。ワイヤレスセンサ１１の発電部１５で発電する構成であれば、単純に定期的にセンサ部１６で機械設備の運転状態と異常の有無を感知して検出信号を出力し、その検出信号を無線で送受信部１７から送受信する方法でもよい。 <Variation 1 of Monitoring Method Using Wireless Sensor>
In the first modification of the monitoring method using the wireless sensor of the third embodiment, the sensor unit 16 senses the operating state of the machine facility and the presence or absence of an abnormality, outputs a detection signal, and wirelessly transmits the detection signal from the transmission / reception unit 17. This is a method of periodically transmitting and receiving a transmission / reception time interval at a predetermined time. If the power generation unit 15 of the wireless sensor 11 generates electric power, the sensor unit 16 simply periodically senses the operating state of the mechanical equipment and the presence or absence of an abnormality, outputs a detection signal, and transmits and receives the detection signal wirelessly. A method of transmitting and receiving from the unit 17 may be used.

なお、本発明は、機械設備から運転時に発生する機械振動を電気エネルギーに変換し、電源として活用することで、電源配線又はバッテリの必要がなく、機械設備における機械振動の周波数変化が起きても安定した発電能力が得られ、機械設備の運転状態と異常感知の有無をワイヤレスで監視することができれば、上述した発明の実施の形態に限定されず、本発明の要旨を逸脱しない範囲で種々変更できることは勿論である。 Note that the present invention converts mechanical vibration generated during operation from mechanical equipment into electrical energy and uses it as a power source, so there is no need for power supply wiring or a battery, and even if there is a change in the frequency of mechanical vibration in the mechanical equipment. The present invention is not limited to the above-described embodiment, and various changes can be made without departing from the gist of the present invention, as long as stable power generation capability can be obtained and the operation state of the mechanical equipment and the presence or absence of abnormality can be monitored wirelessly. Of course you can.

本発明は、発電機等の回転機器の機械設備の監視に限定されず、その他のベルトコンベア、加工装置のように振動するものであればその運転状態と異常の有無の監視に利用することができる。 The present invention is not limited to the monitoring of mechanical equipment of rotating equipment such as generators, but can be used for monitoring the operating state and the presence / absence of abnormality as long as it vibrates like other belt conveyors and processing devices. it can.

１１ワイヤレスセンサ
１２錘
１３動吸振器構造
１４圧電素子
１５発電部
１６センサ部
１７送受信部
１８支持台
２３支点部
２４支持板材
２５作動子
２８三角形状の支持板材
２９四角形状の支持板材
４１監視システム
４６センサスイッチ部
４３監視装置 DESCRIPTION OF SYMBOLS 11 Wireless sensor 12 Weight 13 Dynamic vibration absorber structure 14 Piezoelectric element 15 Power generation part 16 Sensor part 17 Transmission / reception part 18 Support stand 23 Supporting point part 24 Support board material
25 Actuator 28 Triangular Support Plate Material 29 Square Support Plate Material 41 Monitoring System 46 Sensor Switch Unit 43 Monitoring Device

Claims

A wireless sensor (11) for monitoring the operating state of machine equipment and the presence or absence of abnormality,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A dynamic vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided below the weight (12) of the dynamic vibration absorber structure (13). when There propagating the support table from (18) to the animal absorber structure (13), said support plate (24) an intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the (14) actuator provided between (25) to generate power by pressing the piezoelectric element (14) originating Part (15),
A sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal;
A transmission / reception unit (17) that wirelessly transmits and receives a detection signal output from the sensor unit (16), and
The wireless sensor, wherein the sensor unit (16) and the transmission / reception unit (17) are configured to operate by being supplied with electric power generated by the power generation unit (15).

A wireless sensor (11) for monitoring the operating state of machine equipment and the presence or absence of abnormality,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A dynamic vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided above the weight (12) of the dynamic vibration absorber structure (13). when There propagating the support table from (18) to the animal absorber structure (13), said support plate (24) an intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the (14) actuator provided between (25) to generate power by pressing the piezoelectric element (14) originating Part (15),
A sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal;
A transmission / reception unit (17) that wirelessly transmits and receives a detection signal output from the sensor unit (16), and
The wireless sensor, wherein the sensor unit (16) and the transmission / reception unit (17) are configured to operate by being supplied with electric power generated by the power generation unit (15).

The wireless sensor according to claim 1 or 2, wherein the sensor unit (16) is a vibration sensor that senses vibration generated from the mechanical equipment and outputs a detection signal.

The power generation unit (15)
A pair of weights (12) attached to both sides of the support plate (24);
The wireless sensor according to claim 1, 2 or 3, comprising two piezoelectric elements (14) attached to the support base (18).

The power generation unit (15)
A plurality of weights (12) attached to the support plate (24) so that the support plate (24) is maintained horizontally;
The wireless sensor according to claim 1, 2 or 3, further comprising a plurality of piezoelectric elements (14) attached to the support base (18).

A monitoring system (41) using a wireless sensor (11) that wirelessly monitors an operating state and presence / absence of abnormality detection by detecting a vibration change of mechanical equipment,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A dynamic vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided below the weight (12) of the dynamic vibration absorber structure (13). when There propagating the support table from (18) to the animal absorber structure (13), said support plate (24) an intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the (14) actuator provided between (25) to generate power by pressing the piezoelectric element (14) originating Unit (15), a sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and a detection signal output from the sensor unit (16) is transmitted and received wirelessly to the outside. A wireless sensor (11) comprising a transceiver (17),
When the amount of power generated by the power generation unit (15) of the wireless sensor (11) exceeds a preset specified value, the sensor unit (16) detects the power and outputs the detection signal wirelessly to the outside. A sensor switch section (46) for switching between ON and OFF;
A monitoring device (43) for receiving a detection signal from the transmission / reception unit (17) and monitoring the operating state of the equipment equipped with the wireless sensor (11) and the presence or absence of abnormality detection; A monitoring system using a wireless sensor.

A monitoring system (41) using a wireless sensor (11) that wirelessly monitors an operating state and presence / absence of abnormality detection by detecting a vibration change of mechanical equipment,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A dynamic vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided above the weight (12) of the dynamic vibration absorber structure (13). when There propagating the support table from (18) to the animal absorber structure (13), said support plate (24) an intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the (14) actuator provided between (25) to generate power by pressing the piezoelectric element (14) originating Unit (15), a sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and a detection signal output from the sensor unit (16) is transmitted and received wirelessly to the outside. A wireless sensor (11) comprising a transceiver (17),
When the amount of power generated by the power generation unit (15) of the wireless sensor (11) exceeds a preset specified value, the sensor unit (16) detects the power and outputs the detection signal wirelessly to the outside. A sensor switch section (46) for switching between ON and OFF;
A monitoring device (43) for receiving a detection signal from the transmission / reception unit (17) and monitoring the operating state of the equipment equipped with the wireless sensor (11) and the presence or absence of abnormality detection; A monitoring system using a wireless sensor.

The wireless sensor (11) is further provided with an industrial sensor such as a temperature sensor, a pressure sensor, and a flow rate sensor. Each power is supplied from the power generation unit (15), and each physical quantity signal is transmitted to the transmission / reception unit (17). 8. A monitoring system using a wireless sensor according to claim 6 or 7, characterized in that wireless transmission / reception is performed from

It is a monitoring method using a wireless sensor (11) that senses mechanical vibrations of mechanical equipment with a wireless sensor (11) and wirelessly monitors the operating state and presence / absence of abnormality detection,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A dynamic vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided below the weight (12) of the dynamic vibration absorber structure (13). when There propagating the support table from (18) to the animal absorber structure (13), said support plate (24) an intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the (14) actuator provided between (25) to generate power by pressing the piezoelectric element (14) originating Unit (15), a sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and transmission and reception that transmits and receives the detection signal output from the sensor unit (16) wirelessly The power to be supplied to the sensor unit (16) and the transmission / reception unit (17) using mechanical vibration generated from mechanical equipment in the power generation unit (15) of the wireless sensor (11) including the unit (17). Generating and charging,
When the amount of power generated by the power generation unit (15) reaches a preset specified value,
The sensor unit (16) senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and the detection signal is transmitted and received wirelessly from the transmission / reception unit (17),
On the other hand, when the amount of power generated by the power generation unit (15) does not reach the specified value,
A monitoring method using a wireless sensor, characterized in that although the amount of power to be generated is reduced and the transmission / reception interval is increased, the transmission / reception unit (17) does not transmit / receive because the mechanical equipment is not in a dangerous state.

It is a monitoring method using a wireless sensor (11) that senses mechanical vibrations of mechanical equipment with a wireless sensor (11) and wirelessly monitors the operating state and presence / absence of abnormality detection,
A support base (18) provided so that vibration of the mechanical equipment propagates, a fulcrum part (23) attached to the support base (18), and an intermediate part of the plate material on the fulcrum part (23) The support plate material (24) supported as a support plate and the weight (12) attached to the support plate material (24) to move up and down. The weight (12) is swung in a seesaw state to cause mechanical vibration. A dynamic vibration absorber structure (13) that suppresses and absorbs kinetic energy; and a piezoelectric element (14) provided above the weight (12) of the dynamic vibration absorber structure (13). when There propagating the support table from (18) to the animal absorber structure (13), said support plate (24) an intermediate portion vertically movable to該錘(12) and the piezoelectric element as a fulcrum of the (14) actuator provided between (25) to generate power by pressing the piezoelectric element (14) originating Unit (15), a sensor unit (16) that senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and transmission and reception that transmits and receives the detection signal output from the sensor unit (16) wirelessly The power to be supplied to the sensor unit (16) and the transmission / reception unit (17) using mechanical vibration generated from mechanical equipment in the power generation unit (15) of the wireless sensor (11) including the unit (17). Generating and charging,
When the amount of power generated by the power generation unit (15) reaches a preset specified value,
The sensor unit (16) senses the operating state of the mechanical equipment and the presence or absence of an abnormality and outputs a detection signal, and the detection signal is transmitted and received wirelessly from the transmission / reception unit (17),
On the other hand, when the amount of power generated by the power generation unit (15) does not reach the specified value,
A monitoring method using a wireless sensor, characterized in that although the amount of power to be generated is reduced and the transmission / reception interval is increased, the transmission / reception unit (17) does not transmit / receive because the mechanical equipment is not in a dangerous state.

The predetermined value of the preset amount of power to be generated is an amount of power that can operate both the sensor unit (16) and the transmission / reception unit (17). Monitoring method using wireless sensor.