JP4617778B2 - Electronic antibacterial device having state notification means - Google Patents

Description

  The present invention controls the amount of microorganisms and organic matter in the water, and can be used for living things such as marine structures, ships, water transportation pipes or waterways, drains, water tanks, heat exchangers, and seawater intake screens. Operation data and predetermined values are electronically controlled in an electronic antibacterial device that electrochemically prevents scales from attaching, controls the amount of microorganisms and organic matter contained in the water, and controls the water quality electrochemically. The present invention relates to an electronic antibacterial device having means for automatically notifying occurrence of an event to a predetermined notification destination.

Many organisms exist in seawater and freshwater, and adhere to the surface of underwater structures, causing various problems. For example, when it adheres to a ship, the problem of increase in propulsion resistance occurs. Moreover, when it adheres to the aquaculture ginger, problems such as inhibition of seawater exchange occur. Furthermore, problems such as deformation of nets occur when attached to fishing nets such as stationary nets.
In addition, microorganisms attached to the pipes and valves of water supply / drainage cause problems such as contaminating people and products through seawater and fresh water.

  The general mechanism of biological attachment to the surface of structures in contact with seawater and fresh water is as follows. First, adherent gram-negative bacteria adsorb to the surface of the structure and secrete a large amount of slime-like substances derived from lipids. Furthermore, Gram-negative bacteria gather and grow in this slime layer to form a microbial coating. In the seawater, large organisms such as algae, shellfish, and barnacles, which are large organisms, adhere to the microbial coating. The attached large creatures will breed and grow, eventually covering the surface of the underwater structure.

  As an antifouling method against contamination by living organisms adhering to the surface of an underwater structure that is in contact with seawater or fresh water, a sterilizing substance is added to the antifouling surface, or a paint containing an organotin compound In general, an antifouling method has been used in which a coating film is formed and an organic tin compound is eluted or chlorine generated by electrolyzing seawater is used. However, these methods generate harmful substances, and there is concern about the impact on the organism due to water pollution.

In recent years, methods have been proposed for controlling organisms attached to the surface of an underwater structure, seawater, or fresh water that is electrochemically contacted without generating harmful substances. In this electrochemical biological control method, when a potential higher than a predetermined potential at which a direct electrochemical reaction with a microorganism is confirmed is applied to the microorganism, coenzyme A, one of the redox substances inside the microorganism, is irreversible. It is oxidized and induces a decrease in the respiratory activity of the microorganism and the permeation barrier of the microorganism membrane, thereby killing the microorganism (Japanese Patent Publication No. 6-91821: see Patent Document 1).
Japanese Patent Application Laid-Open No. 9-248554 (see Patent Document 2) includes a step of adsorbing and sterilizing microorganisms in water on the surface of the conductive substrate by applying a positive potential to the conductive substrate in water. By applying a higher positive potential to the conductive substrate, the cells of microorganisms adsorbed on the surface of the conductive substrate are destroyed, and the sterilized microorganisms adhering to the conductive substrate and their decomposition products are detached. The invention is summarized as a method for controlling an aquatic microorganism characterized in that
Further, in Japanese Patent No. 3105024 (see Patent Document 3), in water, a positive potential is applied to the conductive substrate to adsorb and sterilize the microorganisms in the water on the surface of the conductive substrate (+0 to 1). And 5Vvs.SCE) and a step of detaching sterilized microorganisms adsorbed on the surface of the conductive substrate by applying a negative potential to the conductive substrate (−0 to −0.4Vvs.SCE) The present invention describes a method for controlling an underwater microorganism characterized in that
Japanese Patent Laid-Open No. 2001-198572 (see Patent Document 4) adsorbs microorganisms in water to the surface of the conductive substrate by applying a positive potential that does not cause electrolysis to the conductive substrate in water. Sterilizing and applying a negative potential that causes electrolysis to the conductive substrate, reducing the surface of the conductive substrate, guiding an alkaline substance to the surface of the conductive substrate, and adsorbing to the surface of the conductive substrate There is described an invention that is summarized in a method for controlling underwater microorganisms characterized by performing a step of removing sterilized microorganisms and degradation products thereof.

Furthermore, as an approximate antifouling method, a method for generating antifouling by generating oxygen on a conductive substrate is disclosed in JP-B-1-46595 (see Patent Document 5) and JP-A-11-303041 (Patent Document 6). Reference). In these methods, the potential for oxygen generation below the chlorine generation potential is controlled within a range of about 0.55 V to 1.1 V.
However, the electrochemical antifouling method clarifies that microorganisms can be sterilized when the cell and the conductive substrate are in direct contact, whereas the approximate antifouling method has almost the same potential. There is no clear proof that oxygen generated in can sterilize and antifoul microorganisms that do not contact the conductive substrate. Therefore, it is difficult to conceptually separate from the electrochemical antifouling method that microorganisms or the like do not adhere to the conductive substrate.
Further, an antifouling method in which a positive potential is applied to the conductive coating film to generate hypochlorite ions or chlorine ions is disclosed in Japanese Patent Publication No. 6-15069 (see Patent Document 7) and Japanese Patent Publication No. 8-14036. It is described in the gazette (refer patent document 8), and it is thought that the antifouling effect by the chlorine injection system by a seawater electrolyzer generates chlorine etc. directly on the surface to be protected.

In addition, in carrying out electrochemical control, a counter electrode structure and wiring method paired with the antifouling surface is disclosed in Japanese Patent Application Laid-Open No. 2002-102858 (see Patent Document 9). The invention having the gist is described.
On the other hand, in Japanese Patent Laid-Open No. 11-309594 (see Patent Document 10), a potential control unit that outputs a potential to a conductive substrate and a data processing unit that analyzes data collected by the potential control unit communicate with each other. An invention whose gist is to connect by a line is described.

Japanese Patent Publication No. 6-91821 (page 3, line 42 to line 46, page 8, line 42 to line 44) JP-A-9-248554 (page 6, line 4 to line 8) Japanese Patent No. 3105024 (page 3, line 20 to line 27, Fig. 1-4) JP 2001-198572 A (page 3, line 5 to line 8) Japanese Examined Patent Publication No. 1-46595 (page 5, line 3 to line 6, page 5, line 30 to line 34) Japanese Patent Laid-Open No. 11-303041 (page 5, line 5 to line 6, FIG. 1) Japanese Patent Publication No. 6-15069 (page 3, line 1 to line 6) Japanese Patent Publication No. 8-14036 (page 3, line 10 to line 12) JP 2002-102858 A (2nd page, 38th line to 3rd page, 3rd line) JP-A-11-309594 (page 3, line 13 to page 3, line 21)

  Electronic antibacterial devices are often installed in places where humans are not always present, such as waterfront facilities and underwater structures. In addition, even when installed in a kitchen, bathroom, toilet, or the like of a house where a human lives, it is difficult for the resident to always pay attention to the state of the device. In such a configuration, when a failure occurs in the device and the antibacterial function cannot be effectively maintained, the person who manages the device cannot know the functional abnormality. For example, even in the case of a device having a communication means and having a function connected from a predetermined communication destination, the administrator must connect to the device and inquire about the situation or check the data by browsing the data. I don't know. In addition, when a device becomes unable to respond to a connection request from a communication destination due to a fatal device failure or power failure, the administrator can only understand that the device does not respond and determine what is happening. Can not. Administrators may have to visit the site just to check the situation.

  The present invention relates to the occurrence of abnormal events such as failures and abnormalities, occurrences of conditional events such as the occurrence of some data reaching a predetermined value, and the tendency thereof, in an electronic antibacterial device in operation. Notification destinations for which operation data, environmental measurement data, etc. can be predicted regularly and / or non-periodically so that the occurrence of failure can be predicted from the above, or the effect of electronic antibacterial activity can be grasped It is an object of the present invention to provide an electronic antibacterial device that can automatically notify the manager of the notification destination, quickly grasp the occurrence of those events, and take measures when necessary.

The present invention has at least a conductive base as a working electrode so as to be an antifouling surface, and is disposed so that a counter electrode can be energized at a position not short-circuited with the conductive base. A power supply for energizing is provided between the working electrode and the counter electrode so that at least a process in which a direct electron transfer reaction occurs can be performed, and operation data and environmental measurement data are measured. A reference value is set, a small fluctuation range and period with respect to the reference value, and a large fluctuation range are set, and when the small fluctuation occurs and continues for the period, or when the big fluctuation occurs, the data and / or in advance An electronic antibacterial device characterized by having state notification means for automatically notifying at least one occurrence information of a predetermined event periodically and / or irregularly to a predetermined notification destination A first aspect, the status notification unit, depending on the content to be notified, characterized in that each performs a notification to the same and / or different one or more notification destination for each content, a first The electronic antibacterial device described in the summary is a second summary, and the state notification means has a plurality of communication means, and selects and uses one or more of the communication means according to the contents to be notified The third aspect is the electronic antibacterial device described in the first to second aspects.

  The electronic antibacterial device according to the present invention automatically notifies a predetermined notification destination of operation data and the occurrence of an abnormal situation, so that the control can be changed by grasping the effect without carrying out periodic inspection and confirmation work. By taking quick measures against abnormal situations, it is possible to continue to maintain a good electronic antibacterial effect with minimal maintenance.

Of the electronic antibacterial device, the site that expresses the antibacterial function includes at least a conductive base material, a counter electrode, and a power source installed so that the conductive base material and the counter electrode can be energized. The working base is made to be an antifouling surface, and the counter electrode can be energized at a position not short-circuited with the conductive base, and a direct electron transfer reaction between the working electrode and the living body occurs. It is only necessary to provide a power source for energization between the working electrode and the counter electrode so that at least the process can be performed. The shape and material of the working electrode and the counter electrode, the number of each, and the magnitude and amount of current to be energized It is not limited. Similarly, when installing an electronic antibacterial device, the target is not particularly limited, such as a water conduit, a heat exchanger, a kitchen sink, and a bathroom drain.
The power supply that is energized between the working electrode and the counter electrode, as an output control device, continuously outputs a constant voltage depending on the condition of the target for carrying out the electronic sterilization, or is repeatedly turned on / off by a timer. Or a potential and / or current is measured and feedback control is performed so that they coincide with an indicated value that varies with a predetermined time, or an output voltage or potential / It may have a function of detecting an abnormal situation in which the current flowing in the current control exceeds a predetermined range and stopping the output of the apparatus. Also, the electronic antibacterial device itself may be supplied with power by an outlet, or may be supplied with power by a battery or a storage battery.

  The state notification means measures the state of the output control device and the electrode as operation data, measures the state of the environment as environment measurement data, and regularly and / or irregularly or those data are operated. This refers to a function that automatically notifies a predetermined notification destination of information and data itself that such an event has occurred when data or measurement data meets a predetermined condition.

  The configuration of the state notification means is determined in advance as to whether the measurement data is normal or abnormal, a data measurement unit that measures the state of the output control device as operation data or measures the environmental state as environmental measurement data A function for storing measured conditions, comparing measurement data with those conditions, controlling the communication unit to instruct data communication to a predetermined notification destination, and a function for communicating data to a predetermined notification destination. It consists of a communication part.

The data measurement unit in the state notification means measures the state of the output control device as operation data in the electronic antibacterial device. Measurement data includes, for example, the output voltage, the time during which the voltage is output, the potential of the working electrode and the counter electrode, the current flowing through both electrodes, and the device that can be measured when the reference electrode is included as a component. An arbitrary number of internal voltage data indicating the operation is included.
Moreover, the said data measurement part similarly measures the state of the environment which affects the operation | movement of this electronic antibacterial apparatus as environmental measurement data. The environmental measurement data includes, for example, the state of power supplied to the apparatus, the temperature inside or around the apparatus, the quality of water in contact with the surface to be protected, the amount of water, the measurable water level and flow velocity, and the like.
Of course, it is not necessary to measure all types of these data in all cases. The data that can be measured vary depending on the conditions of the target for carrying out the electronic control, and the type of data to be monitored, the frequency to be monitored, and the severity of the abnormal situation to be notified vary depending on the case.

The arithmetic processing unit in the state notification means stores a predetermined condition regarding whether the measurement data is normal or abnormal, compares the measurement data with those conditions, operation data and environmental measurement data in advance. It has a function to instruct the communication unit to automatically notify a predetermined notification destination periodically. Or, even if some abnormality does not occur in the device or the environment, the data is automatically notified to a predetermined notification destination periodically or when the data meets a predetermined condition. The communication unit may be instructed.
For example, operational data such as potential, current, and output voltage, and environmental data such as temperature, water level, pH indicating water quality, dissolved oxygen, chemical oxygen demand (COD), conductivity, water temperature, etc. Select from 1 minute or once per day, etc., as appropriate, and notify periodically, or notify that the device has been activated, or when the output control device switches between positive and negative potentials and currents Data or environmental data may be notified.

  In addition, when it can be determined that some abnormality has occurred due to the operation data and environmental measurement data meeting the predetermined conditions, the occurrence of abnormality and data indicating the abnormality, and other operation data and environmental measurement at that time It is possible to have a function of instructing the communication unit to automatically notify necessary information from data or the like to a predetermined notification destination.

The criteria for determining whether the measurement data is normal or abnormal are described below.
For operation data, for example, during potential control, the potential as a control target value indicates a displacement of 1% or more, preferably 10% or more with respect to the indicated value and / or the displacement is 1 minute or more, preferably Determines that the control state is abnormal when it continues for more than 10 minutes.
Similarly, the control is performed when the output voltage shows a displacement of 5% or more, preferably 20% or more with respect to the indicated value of the potential and / or when the displacement continues for 1 minute or more, preferably 10 minutes or more. Judge that the condition is abnormal.
As for the current, when the displacement is 5% or more, preferably 20% or more, and / or the displacement is 1 minute or more, preferably compared with the current value during the period when the output voltage value is stable, If it continues for 10 minutes or more, it is determined that the control state is abnormal.
Next, at the time of current control, when the current that is the control target value shows a displacement of 1% or more, preferably 10% or more with respect to the indicated value and / or the displacement is 1 minute or more, preferably 10 minutes or more. If it continues, it is determined that the control state is abnormal.
Similarly, the control is performed when the output voltage shows a displacement of 5% or more, preferably 20% or more with respect to the indicated value of the current and / or when the displacement continues for 1 minute or more, preferably 10 minutes or more. Judge that the condition is abnormal.
On the other hand, for environmental measurement data, for example, when the power supplied to the apparatus is supplied at 100 VAC, the measured value of the power supply voltage shows a fluctuation of 10% or more, preferably 20% or more, relative to the reference value. And / or if it continues for 1 minute or longer, preferably 10 minutes or longer, it is determined that the power supply is abnormal.
As for the temperature, for example, when the temperature inside the output control device is taken as a measured value, the measured value is 40 degrees Celsius or more, preferably in order to prevent parts such as ICs used in the device from being damaged by the high temperature. When the angle exceeds 60 degrees and / or when it continues for 1 minute or longer, preferably 10 minutes or longer, it is determined that the state of the apparatus is abnormal.
Next, since water quality, flow rate, etc. are factors that directly affect the electrochemical reaction that occurs on the electrode surface, current values, voltage values, and output voltage values at the time of initial setting are used as reference values. If any measured value shows a displacement of 1% or more, preferably 10% or more and / or if the displacement continues for 1 minute or more, preferably 10 minutes or more, the control state is judged to be abnormal. it can.

Any of the above-described phenomena is information that can directly cause deterioration of the electrode material due to the performance, overcurrent, and overvoltage of the apparatus, and can reduce the electronic antibacterial effect. Therefore, at least a function that can determine that some abnormality has occurred due to the operation data and environmental measurement data meeting predetermined conditions is an important control requirement.
When determining that the control state is abnormal, for example, immediately after the period during which the indicated value is dynamically changed and the indicated value is made constant, the configuration of the system including the electrodes and the performance / setting of the output control device Overshoot and undershoot may occur due to the tracking performance of the potential control value and current control value determined by the value, and the potential and current do not always match the indicated value. Setting the duration of occurrence of an abnormality is important because it can cause misjudgment of judgment. Furthermore, since the output voltage is not a control target value, the system configuration including the electrodes is stable, and after the output voltage value has stabilized to a fluctuation range of 10% or less over 10 minutes or more, an abnormality determination standard is set. It is preferable.

The output control device and the state notification means are separate from each other, and may be separate devices connected by wiring for measuring the data of the part that exhibits the antibacterial function, or may be an integrated device incorporating all of them. Also good. In general, the output control device often includes a data measurement unit for measuring the potential of the electrode and an arithmetic processing unit for holding the indicated value and calculating the output voltage value from the measurement value. The means may be configured to share a data measurement unit and an arithmetic processing unit of the output control device and operate by an integrated software program.
However, as one of the contents to be automatically notified, in order to automatically notify an abnormal situation related to a power source such as a power failure, at least the occurrence of the situation is determined in advance even after an abnormality has occurred in the power source supplying power to the antimicrobial device. Until the notification destination is notified, the status notification means needs to operate normally. Therefore, in order to have a function of notifying an abnormal situation related to the power supply, the state notification means is equipped with a battery that can supply at least power necessary for automatically notifying the occurrence of the abnormal situation to a predetermined notification destination. When the power supply is normal, it receives power from the same power supply that is supplied to the antibacterial device, and if a power failure occurs, the power is supplied to the state notification means from the battery. Thus, the switching function may be provided so as to be independent to some extent from the output control device.
This is true whether the antibacterial device is powered by a power outlet or by a battery, but when the original power source is a battery, the power consumption of the state notification means is reduced, Alternatively, a configuration in which separate batteries are prepared to supply power to the output control device and the state notification unit is also possible. Here, a dry battery may be used as the battery, and the battery may be periodically replaced, or a storage battery may be used for charging and reusing. If the status notification means is equipped with a storage battery and the power of the device is supplied from an outlet, the function of charging the storage battery from the outlet is equipped to reduce the risk that the status notification means will not operate in an emergency. It is possible.

The communication unit in the status notification unit has a function of communicating data to a notification destination according to an instruction from the arithmetic processing unit. The communication connection means is not particularly limited. For example, a public telephone line, a cellular phone, other dedicated data communication line, a local / wide area network, and a wired and / or wireless communication line such as the Internet are used. Data communication.
As a detailed implementation of the communication unit, for example, a wired or wireless telephone line may be used to report voice data. The communication unit is equipped with a public telephone line modem, a mobile phone and a modem, and automatically uses the AT command to control the communication terminal, etc., and one or more predetermined notification destinations through the public telephone network or the mobile phone network After calling, the voice data is transmitted after the connection is established, and then the connection is disconnected. In this case, voice data in which contents to be notified are recorded in advance may be prepared and used, or notification contents may be generated using a voice synthesis technique. The content to be notified may be formed by a language expressing the content, or may be an alarm sound formed by a single sound or a combination and arrangement thereof. On the other hand, on the side that receives the automatic notification, the administrator can directly listen to the call and listen to the contents, or record the notification contents using a telephone with a call recording function such as an answering machine, It is also possible to adopt a form in which the administrator confirms this.

  Further, more general data communication may be used than voice data. In this case, a wired or wireless telephone line may be used as the communication line, and if the notification destination is in a relatively nearby area such as in the same building or site, a wired or wireless local area / A wide area network may be used and private wireless can be used for data communication. Furthermore, when a wired or wireless network is connected to the Internet through a router or the like, it is possible to use data communication via the Internet.

This form of data communication includes direct connection with a data communication device that is a notification destination using a public telephone network or a mobile telephone network, and one-to-one data communication using data communication hardware and software. More specifically, both the communication part of the electronic antibacterial device and the data communication device of the notification destination are equipped with a modem for a public telephone line, a mobile phone and a modem, and automatically make a call using an AT command or the like. Establish a connection. As long as the communication unit included in the communication unit of the state notification unit of the electronic antibacterial device and the data communication device of the notification destination can be connected to each other, it is not always necessary to prepare the same type for both. After establishing the connection, the communication unit transmits necessary information to the data communication device that is the notification destination, and disconnects the connection. In addition, if you use a packet communication network such as NTT Docomo's DoPa, do not make a call when necessary, but secure a connection almost always, when necessary Data can be sent to More specifically, NTT Docomo's DoPa compatible terminal Mobile Ark (for example, Mobile Ark 9601KO) can be used, and the status notification means can perform data communication using an AT command via a serial connection.
On the other hand, data communication using a wired or wireless local area or wide area network is most commonly TCP / IP communication using 10BASE-T or a wireless LAN. If both the status notification means of the electronic sterilization device and the data communication device of the notification destination are connected to the same wired or wireless local area network, the electronic sterilization device is directly connected to the data communication device of the notification destination. It is possible to send data.
In addition, if you connect to an Internet provider through a public telephone network or a mobile phone network, or connect to a router through a wired or wireless local area network and then connect to the Internet, you can use data transmission over the Internet. it can. The status notification means of the electronic sterilization apparatus may notify information by electronic mail via the Internet, or the data communication apparatus of the notification destination is equipped with a web server function, and the status notification means of the electronic sterilization apparatus is the data communication apparatus. The information notification means of the electronic antibacterial device uploads information to a web server in the Internet, and the data communication device of the notification destination manually or automatically uploads the information to the web server. A configuration is also possible in which notification information is obtained by making periodic inquiries.

As the communication unit, an appropriate one is selected and implemented as a communication unit according to the environmental conditions of the place where the electronic sterilization apparatus is installed and the sterilization implementation conditions. One of the above configurations may be selected and mounted, but two or more communication units may be mounted at the same time in order to increase redundancy or when a notification destination condition is required.
Regardless of whether only one communication means is installed or a plurality of communication means are installed, a plurality of notification destinations are registered in the state notification means in advance, and when information to be notified is generated, the same or different information is used depending on the content of the information. It is possible to automatically notify two or more notification destinations. For example, the operation data periodically notified is notified only to the administrator, and when an abnormal situation occurs, not only the administrator but also other related parties registered in advance are automatically notified.
Also, when the status notification means implements two or more communication means at the same time, when information to be notified is generated, it is also notified only by any one of the communication means depending on the content of the information, or plural or all It is possible to select whether to notify by the communication means. For example, in the above example, the operation data to be periodically notified is automatically notified as measurement data only to the administrator's data communication device, and in the event of an abnormal situation, not only the administrator but also other registered in advance It is also possible to automatically notify the concerned parties in the form of e-mail.

  In addition, the water which can be utilized by this invention is not specifically limited. For example, seawater, river water, lake water, tap water, drinking water, or various buffer solutions may be used. In addition, the target organism is not particularly limited as long as it is an organism present in the water.

Hereinafter, the present invention will be described in more detail with reference to examples.
In the embodiment, FIGS. 1 to 7 schematically represent a simple configuration so that the apparatus drawings are not complicated. The present invention is not limited to the following examples, and includes various modifications within the technical scope of the present invention. Moreover, in each Example, the same referential mark was attached | subjected about the same structure.

Example 1
FIG. 1 is a block diagram of an electronic antibacterial device and a data communication device according to the first embodiment. A titanium material was laid as the conductive base material 1 on the wall surface of the seawater conduit, and the counter electrode 2 and the reference electrode 3 were installed. The conductive substrate 1, the counter electrode 2, and the reference electrode 3 were arranged so as not to be directly short-circuited with each other but to be energized by seawater. When the necessary output voltage is known in advance or when the current control is mainly performed, the reference electrode 3 is not particularly required, and thus a configuration without installation is possible. The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive base material 1, the counter electrode 2 and the reference electrode 3, and the current flowing through the conductive base material 1. As will be described later, the output control device 4 has a predetermined potential or current. It is possible to control the output voltage to obtain.
The status notification means 5 includes a data measuring unit 6, an arithmetic processing unit 7, and a public line modem 8 as a communication unit. The arithmetic processing unit 7 controls data measurement of the data measuring unit 6, and the measurement data Based on the condition determination, the public line modem 8 is controlled to perform transmission if necessary. The measurement data by the data measurement unit 6 and the measurement data by the output control device 4 may partially overlap. In this case, the data measured by one can be shared by the other. In addition, the output control device 4 and the data measuring unit 6 independently measure the same data without sharing them, so that it is possible to determine whether or not both data measuring functions are operating normally. The arithmetic processing unit 7 stores a reference value, a notification destination, and the like used for condition determination in an internal memory, and stores a certain amount of operation data and environmental measurement data when necessary. The status notification means 5 controls the public line modem 8 using an AT command, communicates with the data communication apparatus 10 provided with the public line modem 8 through the public telephone network 9, and automatically notifies the information.
Further, in this embodiment, the state notification means 5 is configured not only to connect to a predetermined notification destination but also to have a passive communication function that waits for communication from a predetermined notification destination. As a result, the data communication device 10 installed at a predetermined notification destination is connected to the state notification means 5 through the public line modem 8 and the public telephone network 9 and receives the operation data stored in the arithmetic processing unit 7. Or the operation setting of the output control device 4 can be changed. In this embodiment, AC100V is used as the power source of the electronic antibacterial device. However, the state notification means 5 includes a storage battery (not shown) and can continue to operate for a certain period of time when the power source AC100V fails. It is. When the power supply AC100V fails, the output control device 4 stops its operation, and the state notification means 5 is operated by the storage battery to notify the predetermined notification destination of the occurrence of the power failure. When the power supply AC100V is recovered from the power failure, the output control device 4 starts operating again.

FIG. 2 is a simplified electrical block diagram of the output control device 4 and the electrodes. A power source (not shown) supplies power to an MPU (microprocessing unit) 11, an OP amplifier 12, and an OP amplifier 13. The output control device 4 is electrically connected to the conductive substrate 1, the counter electrode 2, and the reference electrode 3 with a lead wire or a cable.
The MPU 11 includes a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Read / Write Memory), D / A Converter (Digital / Analog Converter), A / D Converter (Analog / Digital Converter), etc. An integrated microprocessor, if necessary, but independent components for each element may be used. The MPU 11 reads a program stored in advance in the ROM, and executes arithmetic processing by the CPU using the RAM or register as a work area. The OP amplifier 12 outputs a voltage to the conductive substrate 1 according to the voltage instruction of the MPU 11. The OP amplifier 13 outputs a voltage to the counter electrode 2 according to the voltage instruction of the MPU 11.
The MPU 11 can measure the potentials of the conductive substrate 1, the counter electrode 2, and the reference electrode 3. The MPU 11 calculates the potential of the conductive substrate 1 based on the potential of the reference electrode 3, and adjusts the outputs of the OP amplifiers 12 and 13 so that they become a predetermined potential, thereby realizing potential control. it can.
On the other hand, the MPU 11 can calculate the current flowing through the conductive substrate 1 by measuring the potential at both ends of the current detection resistor 14. The current detection resistor may be arranged on the counter electrode side or on both sides as necessary. The MPU 11 can realize current control by adjusting the outputs of the OP amplifiers 12 and 13 so that the measured current value becomes a predetermined value.
The output control device 4 and the state notifying means 5 are provided with a control panel in order to avoid wind and rain on the side of the seawater conduit channel wall where the conductive base material 1, the counter electrode 2 and the reference electrode 3 are installed, and are arranged therein. AC100V wiring and public telephone line were laid on the control panel.

In order to confirm the biofouling inhibitory effect of the electronic antibacterial device of Example 1, a test was conducted for 6 months under the following control conditions.
Control conditions at the start: conductive substrate 1
0.9Vvs. After energizing Ag / AgCl for 60 minutes,
-0.6Vvs. Ag / AgCl was applied alternately for 20 minutes.
The department of the factory where the inventor is full-time is predetermined as a notification destination, and the data communication apparatus 10 is installed.
The following conditions were set as notification conditions to the notification destination of the electronic antibacterial device.
(1) As a notification condition when a power supply abnormality occurs, since the power supplied to the apparatus is supplied at AC 100 V, the measured value of the power supply voltage shows a variation of 20% or more with respect to the reference value. Alternatively, a variation of 10% or more was shown and this was continued for 1 minute or longer.
(2) As a notification condition when a device start abnormality (for example, indicating that the device has recovered from a power failure) has occurred, the device start cannot be confirmed even after about two days have passed after the power failure notification.
(3) Output voltage abnormality in potential control (In order to realize the indicated potential in potential control, voltage is output beyond the set range, or device failure, disconnection of electrode system, contact of foreign matter, etc. When the output voltage shows a displacement of 20% or more with respect to the potential indication value, the notification condition when the output voltage and the measured voltage do not match) Or a displacement of 5% or more, and the displacement continued for 1 minute or more.
(4) Notification when a current drop occurs (in electric potential control, the value of the flowing current falls below a predetermined lower limit value. If the current value decreases, there is a concern that the effect of suppressing biofouling may be reduced). The condition is that the displacement is 20% or more compared to the current value during the period when the output voltage value is stable, or the displacement is 5% or more and the displacement continues for 1 minute or more. .
The test in this example was started by initial potential control. During the test period, the current drop was received several times, and the set potential was raised by remote control from the notification destination. In addition, a power failure notification also occurred, and in that case, after two days have passed, the device startup abnormality notification was received, so dispatch personnel to the site where the electronic antibacterial device is installed, check the situation, and take necessary measures I took it.

(Comparative Example 1)
For comparison, an electronic sterilization apparatus that does not have the state notification means 5 in the electronic sterilization apparatus of Example 1 shown in FIG. 3 is installed, and starts by potential control under the same conditions as at the start of Example 1, Monthly testing was conducted.
Titanium material is laid as the conductive base material 1 on the wall surface of the seawater conduit, and the counter electrode 2 is placed at a position where electricity can be supplied by seawater, and the reference electrode 3 is placed at a position where electricity can be supplied by the conductive base material 1 and the counter electrode 2 and seawater. , Each installed. The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive base material 1, the counter electrode 2 and the reference electrode 3, and the current flowing through the conductive base material 1, and the output voltage so as to obtain a predetermined potential or current. Can be controlled. In this comparative example, AC100V is used as the power source of the electronic antibacterial device. When the power supply AC100V fails, the output control device 4 stops its operation. When the power supply AC100V is recovered from the power failure, the output control device 4 starts operating again.
In the test according to this comparative example, personnel went to the place where the electronic antibacterial device was installed and checked almost every other month. At that time, no control conditions for confirming the effect of suppressing biofouling, no measures such as power recovery were performed.

(Comparative Example 2)
For comparison, an electronic antibacterial device having the same configuration as in Example 1 was installed except that it did not have a function of automatically performing state notification, and a test was performed. In this comparative example, a state communication unit 51 (not shown) is provided instead of the state notification unit 5. The state communication means 51 is configured to have only a passive communication function that waits for communication from a predetermined communication destination without having a function of making a determination based on conditions and connecting to a notification destination.
A titanium material was laid as the conductive base material 1 on the wall surface of the seawater conduit, and the counter electrode 2 and the reference electrode 3 were installed. The conductive substrate 1, the counter electrode 2, and the reference electrode 3 were arranged so as not to be directly short-circuited with each other but to be energized by seawater. The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive base material 1, the counter electrode 2 and the reference electrode 3, and the current flowing through the conductive base material 1, and the output voltage so as to obtain a predetermined potential or current. Can be controlled.
The state communication means 51 includes a data measuring unit 6, an arithmetic processing unit 7, and a public line modem 8 as a communication unit. The arithmetic processing unit 7 controls data measurement of the data measuring unit 6, and the measurement data Based on the condition determination. The arithmetic processing unit 7 stores a reference value, a notification destination, and the like used for condition determination in an internal memory, and stores a certain amount of operation data and environmental measurement data when necessary. The status communication unit 51 passively waits for communication from the data communication device 10 installed at the communication destination so as to be connected through the public line modem 8 and the public telephone network 9. Using the data communication device 10, it is possible to connect to the state communication means 51 and receive operation data stored in the arithmetic processing unit 7 or change the operation setting of the output control device 4.
In this comparative example, AC100V is used as a power source for the electronic antibacterial device. However, the status communication means 51 does not have a status notification function, and therefore is not equipped with a spare power source such as a storage battery. Therefore, when the power supply AC100V is blacked out, the output control device 4 and the state communication means 51 stop operating. While the apparatus is stopped, the data communication apparatus 10 cannot connect to the state communication means 51 from the communication destination. When the AC 100V power supply recovers from the power failure, the output control device starts operating again.
The test was carried out for 6 months, starting with potential control under the same conditions as in Example 1.
In the test according to this comparative example, the data communication device 10 installed in the department of the factory where the inventor is in full-time operation was connected to the state communication means 51 and the operation data was confirmed. As a result, power outages occurred intermittently, and power was restored as necessary. Also, when a power failure occurs and the apparatus stops, even if an attempt is made to connect from the data communication apparatus 10, the state communication means 51 is disconnected and cannot be connected. Therefore, the same condition continued for several days, so we dispatched personnel to the site where the electronic antibacterial device was installed as an abnormality, checked the situation, and took necessary measures to restore it.

Visual evaluation of the amount of biofouling after the lapse of 6 months for each of the conductive substrates 1 of Example 1, Comparative Example 1, and Comparative Example 2 was performed. As a result, no biological attachment to the conductive substrate 1 in Example 1 was observed. Moreover, in the electroconductive base material 1 in the comparative example 1, since it was only possible to check an apparatus regularly, it may be late to notice a power failure and a failure, and the apparatus stop period of a considerable period has occurred. A large number of attached organisms were confirmed.
Moreover, although the amount of biological adhesion with respect to the electroconductive base material 1 in the comparative example 2 was very small, it was confirmed. This is because in Comparative Example 2, the frequency of checks was higher than in Comparative Example 1, but the response to the abnormal situation was delayed rather than receiving automatic notification from the electronic antibacterial device as in Example 1. It is done.
It was confirmed that it is very effective in controlling the amount of biological attachment to be able to take an effective response promptly by automatically notifying a change in situation or abnormal situation. In addition, the effectiveness was confirmed in terms of labor and cost, such as the number of checks to be made at the installation site. Furthermore, uneven color development of the oxide was confirmed on the surface of the conductive substrate 1 (titanium) installed in Comparative Example 1, and there was concern about the influence on the electrode material.

(Example 2)
FIG. 4 is a block diagram of an electronic antibacterial device and a data communication device according to the second embodiment. The titanium heat exchange plate of the flat plate heat exchanger 15 using seawater is the conductive base material 1, and the counter electrode 2 is not short-circuited with the conductive base material 1, and can be energized by the conductive base material 1 and seawater. It was installed in a proper position. The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive base material 1 and the counter electrode 2 and the current flowing through the conductive base material 1, and in this embodiment, the output voltage is set so as to obtain a predesignated current. It is possible to control.
The state notification means 5 includes a data measuring unit 6, an arithmetic processing unit 7, and a DoPa terminal (Mobile Ark 9601KO) 16 as a communication unit. The arithmetic processing unit 7 controls data measurement of the data measuring unit 6, and this Condition determination is performed based on the measurement data, and when necessary, the DoPa terminal 16 is controlled to perform transmission. The arithmetic processing unit 7 stores a reference value, a notification destination, and the like used for condition determination in an internal memory, and stores a certain amount of operation data and environmental measurement data when necessary. The status notification means 5 controls the DoPa terminal 16 using an AT command, communicates with the data communication apparatus 10 provided with the DoPa terminal 16 through the DoPa network 17, and automatically notifies the information. Further, in this embodiment, the state notification means 5 is configured not only to connect to a predetermined notification destination but also to have a passive communication function that waits for communication from a predetermined notification destination.
In this embodiment, AC100V is used as the power source of the electronic antibacterial device. However, the state notification means 5 includes a storage battery (not shown) and can continue to operate for a certain period of time when the power source AC100V fails. It is. When the power supply AC100V fails, the output control device 4 stops its operation, and the state notification means 5 is operated by the storage battery to notify the predetermined notification destination of the occurrence of the power failure. When the power supply AC100V is recovered from the power failure, the output control device 4 starts operating again.
In order to avoid wind and rain, the output control device 4 and the state notification means 5 are installed in the heat exchanger 15 on the side of the heat exchanger 15 where the conductive base material 1, the counter electrode 2 and the reference electrode 3 are installed. The antenna of the DoPa terminal 16 was installed outside the control panel. In addition, AC100V wiring was laid on the control panel.

In order to confirm the biofouling inhibitory effect of the electronic antibacterial device of Example 2, a test was carried out for 3 months under the following control conditions.
Control conditions at the start: After energizing the conductive substrate 1 at 85 mA / m ² for 180 minutes,
-50 mA / m ² was energized for 40 minutes and this was repeated.
The department of the factory where the inventor is full-time is predetermined as a notification destination, and the data communication apparatus 10 is installed. The following conditions were set as notification conditions to the notification destination of the electronic antibacterial device.
(1) As a notification condition when a power supply abnormality occurs, since the power supplied to the apparatus is supplied at AC 100 V, the measured value of the power supply voltage shows a variation of 20% or more with respect to the reference value. Alternatively, a variation of 10% or more was shown and this was continued for 1 minute or longer.
(2) As a notification condition when a device start abnormality (for example, indicating that the device has recovered from a power failure) has occurred, the device start cannot be confirmed even after about two days have passed after the power failure notification.
(3) Output voltage abnormality in current control (In order to realize the command current in current control, the voltage is output beyond the set range, or the device is broken, the electrode system is disconnected, the foreign object is contacted, etc. As the notification condition when the output voltage and the measured voltage do not match), the output voltage shows a displacement of 20% or more with respect to the current indication value Or a displacement of 5% or more, and the displacement continued for 1 minute or more.
(4) Abnormal current (in current control, indicates that the value of the flowing current falls below a predetermined lower limit value or that a large amount of current flows. If the current value decreases, there is a concern that the effect of suppressing biofouling may be reduced. As a notification condition in the case of occurrence of deterioration of the electrode material if the value increases, the current that is the control target value shows a displacement of 10% or more with respect to the indicated value, or 1% or more It was assumed that the displacement continued for 1 minute or more.
The test in this example was performed by current control. During the test period, the output voltage that was feedback controlled to allow the command current to flow increased and exceeded the range set as the upper limit, so an output voltage abnormality notification occurred. At this time, the output control device 4 stopped the device as an output voltage abnormality. In response, dispatch personnel to the site where the electronic antibacterial device is installed to check the situation, check the output control device to make sure that the device is not faulty, and then reduce the value of the indicated current. Then, the device was operated again.

(Comparative Example 3)
For comparison, an electronic sterilization apparatus that does not have the state notification means 5 in the electronic sterilization apparatus of Example 2 shown in FIG. 5 is installed and started by current control under the same conditions as at the start of Example 2. Monthly testing was conducted.
The titanium heat exchange plate of the flat plate heat exchanger 15 using seawater is the conductive base material 1, and the counter electrode 2 is not short-circuited with the conductive base material 1, and can be energized by the conductive base material 1 and seawater. It was installed in a proper position. The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive base material 1 and the counter electrode 2 and the current flowing through the conductive base material 1, and in this embodiment, the output voltage is set so as to obtain a predesignated current. It is possible to control. In this comparative example, AC100V is used as the power source of the electronic antibacterial device. When the power supply AC100V fails, the output control device 4 stops its operation. When the power supply AC100V is recovered from the power failure, the output control device 4 starts operating again.
In the test according to this comparative example, personnel went to the place where the electronic antibacterial device was installed and checked almost every other month. At that time, as in the second embodiment, the output voltage that is feedback-controlled to allow the command current to flow increases and exceeds the range set as the upper limit, so the output control device 5 stops the device as an output voltage abnormality. A situation occurred. As a result, the function of this apparatus was stopped for two months. However, no control conditions for confirming the biofouling inhibitory effect, power recovery, etc. were taken.

  After the elapse of 3 months, a visual evaluation of the amount of biofouling on each conductive substrate 1 of Example 2 and Comparative Example 3 was performed. As a result, the amount of biofouling on the conductive substrate 1 in Example 2 is smaller than the amount of biofouling on the conductive substrate 1 in Comparative Example 3, and a change in situation or an abnormal situation is automatically notified. It is very effective for the control of the amount of biofouling that the person who has been notified can take an effective response promptly even for an abnormal situation that is not anticipated and not incorporated into programming. confirmed.

(Example 3)
FIG. 6 is a block diagram of an electronic antibacterial device and a data communication device according to the third embodiment. A titanium material was laid as the conductive base material 1 on the wall surface of the trap inside the drain outlet, and the counter electrode 2 and the reference electrode 3 were respectively installed. The conductive substrate 1, the counter electrode 2 and the reference electrode 3 were arranged so that they could be energized with water without being directly short-circuited with each other.
The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive substrate 1 and the counter electrode 2 and the current flowing through the conductive substrate 1 and can control the output voltage so as to obtain a predetermined potential or current. Is possible. The state notification unit 5 includes a data measurement unit 6, a calculation processing unit 7, and a LAN interface (TCP / IP communication through 10BASE-T) 18 as a communication unit. The calculation processing unit 7 stores data of the data measurement unit 6. The measurement is controlled, the condition is determined based on the measurement data, and the LAN interface 18 is controlled and transmitted when necessary.
The arithmetic processing unit 7 stores a reference value, a notification destination, and the like used for condition determination in an internal memory, and stores a certain amount of operation data and environmental measurement data when necessary. The status notification means 5 is connected to the Internet 20 through the LAN interface 18 and the router 19, communicates with the data communication apparatus 10 that is also equipped with the router 19 and the LAN interface 18 and is connected to the Internet 20, and automatically notifies the information.
In this embodiment, AC100V is used as the power source of the electronic antibacterial device. However, the state notification means 5 includes a storage battery (not shown) and can continue to operate for a certain period of time when the power source AC100V fails. It is. When the power supply AC100V fails, the output control device 4 stops its operation, and the state notification means 5 is operated by the storage battery to notify the predetermined notification destination of the occurrence of the power failure. When the power supply AC100V is recovered from the power failure, the output control device 4 starts operating again.

In order to confirm the biofouling suppression effect of the electronic antibacterial device of Example 3, a test was conducted for one month under the following control conditions.
Control conditions at the start: After energizing the conductive substrate 1 at 85 mA / m ² for 180 minutes,
-50 mA / m ² was energized for 40 minutes and this was repeated.
The department of the factory where the inventor is full-time is predetermined as a notification destination, and the data communication apparatus 10 is installed. The following conditions were set as notification conditions to the notification destination of the electronic antibacterial device.
(1) As a notification condition when a power supply abnormality occurs, since the power supplied to the apparatus is supplied at AC 100 V, the measured value of the power supply voltage shows a variation of 20% or more with respect to the reference value. Alternatively, a variation of 10% or more was shown and this was continued for 1 minute or longer.
(2) As a notification condition when a device start abnormality (for example, indicating that the device has recovered from a power failure) has occurred, the device start cannot be confirmed even after about two days have passed after the power failure notification.
(3) Output voltage abnormality in current control (In order to realize the command current in current control, the voltage is output beyond the set range, or the device is broken, the electrode system is disconnected, the foreign object is contacted, etc. As the notification condition when the output voltage and the measured voltage do not match), the output voltage shows a displacement of 20% or more with respect to the current indication value Or a displacement of 5% or more, and the displacement continued for 1 minute or more.
(4) Abnormal current (in current control, indicates that the value of the flowing current is lower than a predetermined lower limit value or that a large amount of current flows. As a notification condition in the case of occurrence of deterioration of the electrode material if the value increases, the current that is the control target value shows a displacement of 10% or more with respect to the indicated value, or 1% or more It was assumed that the displacement continued for 1 minute or more.
The test in this example was performed by current control. During the test period, the output voltage that was feedback controlled to allow the command current to flow increased and exceeded the range set as the upper limit, so an output voltage abnormality notification occurred. At this time, the output control device 4 stopped the device as an output voltage abnormality. In response, dispatch personnel to the site where the electronic antibacterial device is installed to check the situation, check the output control device to make sure that the device is not faulty, and then reduce the value of the indicated current. Then, the device was operated again.

(Comparative Example 4)
For comparison, an electronic sterilization apparatus having no state notification means 5 in the electronic sterilization apparatus of Example 3 shown in FIG. 7 is installed, and is started by current control under the same conditions as at the start of Example 3. Monthly testing was conducted.
A titanium material was laid as the conductive base material 1 on the wall surface of the trap inside the drain outlet, and the counter electrode 2 and the reference electrode 3 were respectively installed. The conductive substrate 1, the counter electrode 2 and the reference electrode 3 were arranged so that they could be energized with water without being directly short-circuited with each other. The output control device 4 outputs a voltage between the conductive substrate 1 and the counter electrode 2. The output control device 4 has a function of measuring the potential of the conductive base material 1 and the counter electrode 2 and the current flowing through the conductive base material 1, and in this embodiment, the output voltage is set so as to obtain a predesignated current. It is possible to control.
In the test according to this comparative example, once a test was conducted during the test period, personnel went to the place where the electronic antibacterial device was installed and checked. No action was taken.

At the end of one month, water was collected from the traps of Example 3 and Comparative Example 4 and evaluated by the colony method. In the colony method, 1 ml of water recovered in the yeast MY medium was uniformly applied and cultured at 25 ° C. for 12 hours to count the number of colonies formed, and the ratio of the count amount of Example 3 to Comparative Example 4 was evaluated.
In the water collected in Example 3, since the amount of microorganisms is much smaller than in the case of the water collected in Comparative Example 4, a quick and effective response can be obtained by automatic notification of changes in circumstances and abnormal situations. It was confirmed that it was very effective in controlling the amount of microorganisms and organic substances in water.

Configuration diagram of Example 1 Electrical block diagram Configuration diagram of Comparative Example 1 Configuration diagram of Example 2 Configuration diagram of Comparative Example 3 Configuration diagram of Example 3 Configuration diagram of Comparative Example 4

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conductive base material 2 Counter electrode 3 Reference electrode 4 Output control apparatus 5 Status notification means 6 Data measurement part 7 Arithmetic processing part 8 Public telephone modem 9 Public telephone network 10 Data communication apparatus 11 MPU (microprocessing unit)
12 OP amplifier 13 OP amplifier 14 Current detection resistor 15 Heat exchanger 16 DoPa terminal 17 DoPa network 18 LAN interface 19 Router 20 Internet

Claims (3)

At least the conductive substrate is made into a working electrode so as to be an antifouling surface, and the counter electrode is placed in a position not short-circuited with the conductive substrate so that the counter electrode can be energized. In order to carry out at least the process of generating a power supply, a power source that is energized is provided between the working electrode and the counter electrode, operation data and environmental measurement data are measured, and a reference value is set for the operation data and environmental measurement data. A small fluctuation range and period with respect to the reference value and a large fluctuation range are respectively defined, and when the small fluctuation occurs and the period continues or when a large fluctuation occurs, the data and / or the predetermined event An electronic antibacterial device, comprising: state notification means for automatically notifying at least one occurrence information regularly and / or irregularly to a predetermined notification destination. 2. The electronic sterilization according to claim 1, wherein the status notification unit is configured to notify one or more notification destinations that are the same and / or different for each content according to the content to be notified. apparatus. The said status notification means has a some communication means, According to the content to notify, it selects and uses one or more of those communication means, The Claim 1 thru | or 2 characterized by the above-mentioned. electronic system filtering apparatus.

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