JP2012154864A - Moisture meter for waste treatment tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moisture meter for a waste treatment tank which is operated by a DC power supply and responds to a cost reduction and space saving while suppressing electrolytic corrosion generated in a positive electrode to the minimum.SOLUTION: A moisture meter for a waste treatment tank includes: two electrodes 2a and 2b mutually separately disposed at the inner surface side of a side wall 1 of a toilet tank 12 for a biological toilet; a power supply section 6 that includes a DC constant voltage power supply 3 for applying a voltage between the two electrodes 2a and 2b, a switch section 4 for turning on/off the application of the voltage to the electrodes 2a and 2b, and a partial pressure resistor 5 for dividing the voltage of the DC constant voltage supply 3 between itself and a treating object between the two electrodes; a measuring section 7 that includes a voltage indicator 7a for measuring the voltage applied to the two electrodes 2a and 2b, and an A/D converting section 7b for performing A/D conversion of the output thereof; and a control section 8 for controlling the switch section 4 of the power supply section 6 to be intermittently turned on and controlling the measuring section 7 to receive a voltage value when the switch section 4 is turned on.

Description

  The present invention relates to a moisture meter for a waste treatment tank for measuring a moisture state of an object to be treated in a waste treatment tank including a toilet tank of a biotoilet.

  In order to maintain good microbe degradation activity in waste treatment tanks such as biotoilet, which is the main decomposition target of microorganisms, and garbage processing machines, which are waste, the water content of the objects in the tank It is a well-known fact that it is necessary to measure the rate constantly or periodically and control the volume ratio to about 15% to 40%, and many proposals have been made for means for controlling the moisture content. ing. On the other hand, in order to control the moisture content of the object to be treated, naturally, means for measuring the moisture content is necessary. However, there has been almost no specific proposal for this.

  Patent Document 1 is a proposal related to a temporary toilet that is a biotoilet. In this temporary toilet, a wood chip for excrement treatment in which microorganisms live is housed in a digestion tank into which excrement is introduced, and moisture of the wood chip The rate is controlled by the dehumidifying means and the heating means. However, there is no explanation about the means for measuring the moisture content.

  Patent Document 2 is a proposal related to a temporary toilet that is a bio-toilet, as in Patent Document 1, and in this temporary toilet, a wood chip for manure processing in which microorganisms live in a digestion tank into which excrement is introduced is accommodated. The moisture content of the wooden chip is controlled by a dehumidifying means, a heating means for heating the digestion tank, and an exhaust means for discharging the air in the digestion tank. The dehumidifying means is to be controlled so that the moisture content of the wood chip is 30 to 70%. However, there is no explanation about the measuring means for measuring the moisture content.

  Patent Document 3 relates to a toilet excrement disposal apparatus in a moving body that is a biotoilet, which includes a treatment object moisture measurement sensor that detects a moisture state of a treatment object in a treatment tank, thereby The moisture state is detected, and in accordance with the output of the moisture measurement sensor, the control means controls the operation of the rotary stirring means and the exhaust means arranged in the treatment tank, and the processing object in the treatment tank is controlled. The moisture state is controlled in a range of 40 to 70% in terms of moisture content so that the decomposition treatment with microorganisms is suitably performed. In Patent Document 3, as described above, there is a description about the moisture measurement sensor, but there is no description above that a commercially available moisture content measurement sensor is adopted, and the specific configuration is unknown.

  Patent Document 4 is a soil moisture meter having a rod-like configuration that can be pierced into soil. An electrode is formed on the tip and the circumferential side in the middle of the length direction. The electrode is stabbed into the soil, and the electric resistance between the two electrodes is measured to measure moisture in the soil. As its name suggests, it is a moisture meter suitable for piercing into the soil and measuring moisture easily, and it can be used for a long time by placing it in a toilet bowl of a biotoilet or a treatment tank of a garbage disposal machine. Not appropriate.

  Patent Document 5 relates to an electric resistance type moisture meter. A cereal sample is placed on a sample dish, the cereal sample is sandwiched between an upper electrode and a lower electrode, and the electrical resistance between the electrodes is measured, whereby the cereal is measured. The moisture content of the sample is measured. Although there are a large number of proposals for electric resistance moisture meters for measuring the moisture content of cereals including this Patent Document 5, the electrodes for measuring the moisture content of cereals are also used for measuring the moisture content of cereals. Neither of them is suitable for use in measuring the moisture of the object to be processed by placing it in a toilet tank of a biotoilet or a processing tank of a garbage disposal machine.

Japanese Patent No. 4243406 Japanese Patent No. 4243407 JP 2009-233609 A Japanese Utility Model Publication No. 63-118557 JP 05-126775 A

  In Patent Documents 4 and 5, the basic configuration is an electric resistance type moisture meter, and the moisture content of waste such as excrement, which is an object to be processed in a toilet tank of a biotoilet or a treatment tank of a garbage disposal machine For this measurement, it is appropriate to employ the electric resistance type moisture meter as described above. However, in these electric resistance type moisture meters, two electrodes are arranged in the object to be measured, a current is passed between them, a voltage applied between both electrodes is measured, or a current flowing between both electrodes is measured. By measuring, the electrical resistance between them is obtained, and the moisture content is obtained based on this. This type of moisture meter has a simple configuration, but when using a DC power source, There is a problem that rust due to electrolytic corrosion occurs on the anode side and breaks within a relatively short time.

  Such a problem can be reduced by using an AC power supply instead of a DC power supply, but in a treatment tank of a biotoilet or a garbage disposal machine, a stirring means, an exhausting means, Various processing means such as a heating means and a water supply means are provided, and a control means is provided for controlling the operation thereof. Needless to say, this control means uses a DC constant voltage power supply. The use of an AC power supply for the moisture meter requires a separate power supply different from the control means, and the circuit becomes complicated in order to ensure mutual compatibility and the circuit board becomes large. As a result, there is a problem in that it becomes impossible to meet the demand for cost reduction and space saving.

  The present invention eliminates the above-mentioned problems, and is a moisture meter that operates with a DC power supply similar to the above-described control means, and reduces cost and space while minimizing electrolytic corrosion that occurs on the anode side electrode. It is an object of the present invention to provide a moisture meter for a waste treatment tank that can be handled.

1 of the present invention includes two electrodes that are spaced apart from each other in a waste treatment tank.
A power supply unit comprising a DC power supply for applying a voltage or passing a current between the two electrodes;
A measurement unit comprising a voltmeter or an ammeter for measuring a voltage applied between the two electrodes or a current flowing between the two electrodes;
Control the power supply unit to intermittently apply voltage or flow current between the two electrodes, and measure at the measurement unit when intermittently applying voltage or flowing current between the two electrodes A control unit that controls to receive a voltage applied between the two electrodes or a current value flowing between the two electrodes as a moisture value;
It is the moisture meter for waste processing tanks comprised by this.

2 of the present invention is the moisture meter for waste treatment tank of 1 of the present invention,
The power supply unit comprises a switch unit capable of switching the polarity of the voltage or current applied between the two electrodes, and the intermittent application of the voltage or current applied to the two electrodes from the DC power source,
The control unit is configured to control the switch unit so as to invert the polarity every time a voltage is intermittently applied to the two electrodes or a current flows.

3 of the present invention is the moisture meter for waste treatment tank of 2 of the present invention,
In order to perform the operation of applying a voltage intermittently or flowing a current between the two electrodes once every 1 to 4 hours, and applying a voltage each time between the two electrodes. The switch part of the power supply part is controlled so that the time or the time for passing the current is 0.3 to 0.5 seconds.

4 of the present invention is a moisture meter for a waste treatment tank according to claim 3 of the present invention,
When a new object to be treated is introduced and the agitation means in the waste treatment tank is operated, the control unit is immediately further inserted between the two electrodes by 0.3 to 0.5. The switch unit of the power supply unit is controlled so as to perform an operation of applying a voltage or flowing a current for a second.

  According to the moisture meter for a waste treatment tank of 1 of the present invention, the electrode disposed in the waste treatment tank is always disposed in the object to be treated. Since the flow time is an extremely short time only at the moment when it is necessary to actually detect the moisture state in the object to be processed, the corrosion occurring on the anode side does not proceed easily, and the normal state is maintained for a long time. Can continue to be used.

  In a biotoilet or a garbage processing machine, in order to realize a good processing of the object to be processed in the waste processing tank, the moisture state is detected, and the moisture content is within a range of 15% to 40% by volume ratio. If the moisture content is higher than this range, it will be lowered to enter the range, and if it is within this range, the state can be maintained. The operation of each of the processing means such as the heating means, the stirring means, the exhaust means, and the water supply means disposed in the waste treatment tank is controlled. In a biotoilet or a garbage disposal machine, a moisture meter for a waste treatment tank is used in order to measure the moisture content of an object to be treated in such a treatment tank.

  In the wastewater treatment tank moisture meter, for example, if the output voltage value is low (the output current value is high), the resistance value is low, indicating that the moisture content in the object to be treated is high. Depending on the degree, the heating means, the agitation means and the exhaust means are operated, and the operation of the water supply means is stopped to control the water ratio to decrease. Conversely, if the output voltage value of the moisture analyzer for waste treatment tanks is high (the output current value is low), the resistance value is large, indicating that the moisture content in the material to be treated is low. Depending on the degree, the operation of the heating means, the agitation means and the exhaust means is stopped, the water supply means is supplied with water, and the ratio of moisture is increased. If the output voltage value is about the middle (if the output current value is about the middle), the moisture content is in the range of 15% to 40% (volume ratio) in this case, In order to maintain the temperature, the heating means, the stirring means and the exhaust means are operated at corresponding levels, and the operation of the water supply means is appropriately controlled.

  In this way, the moisture meter for the waste treatment tank operates various processing means such as a heating means, an agitation means, an exhaust means, and a water supply means to keep the moisture state in the object to be treated in an appropriate state. Therefore, as a premise, it is used as a means for measuring the moisture state, and two electrodes are arranged in the object to be treated in the waste treatment tank, and the electric resistance of the object to be treated between the two electrodes. Is used to estimate the moisture state. And in the moisture analyzer for waste treatment tank, apply a voltage between both electrodes, measure the voltage drop caused by the current flowing between them, or let the current flow between both electrodes, measure the current value flowing between them, In order to obtain the electrical resistance during this period, the power source for this purpose is a direct current that is easy to match with the control device that controls the operation of the heating means, the stirring means, etc. in consideration of the simplicity of the circuit. A power supply is used.

  In the moisture analyzer for waste treatment tanks, the above two electrodes are not inserted into and removed from the object to be treated, but are always placed in the object to be treated. In the meter, in order to measure the resistance value at all times, a voltage is applied between them to pass a current. As described above, for this reason, electrolytic corrosion occurs on the anode side, and the anode side electrode is damaged within a short period of time, and is unusable. On the other hand, in the moisture meter for waste treatment tank of 1 of the present invention, in practice, in order to appropriately treat the object to be treated, the moisture state is only between the two electrodes in the minimum time when it is necessary to know the moisture state. Applying voltage or applying current to measure the resistance between them to obtain the moisture content. Therefore, as mentioned above, the corrosion on the anode side hardly progresses, and long-term without replacing the electrode. Measurement is possible.

  According to the moisture meter for a waste treatment tank of 2 of the present invention, although a direct current is used as a power source for applying a voltage or flowing a current between the two electrodes, Each time a voltage is intermittently applied or a current is applied, the polarity is reversed, so that the two electrodes are hardly corroded.

  According to the moisture meter for a waste treatment tank of 3 of the present invention, the time for applying the voltage between the two electrodes or the time for passing the current between the two electrodes each time is set as the resistance value between the two electrodes. The time interval during which the voltage is applied between the two electrodes or the current is passed is limited to the measurement of the moisture value necessary for the treatment of the object to be treated in the stool. Therefore, the occurrence of electrolytic corrosion of the two electrodes is made more difficult to occur.

  According to the moisture meter for a waste treatment tank of 4 of the present invention, in addition to periodically measuring the moisture content, if a situation occurs in which the moisture content of the material to be treated changes, each time the moisture content is measured. Since the moisture content is measured immediately after the material is homogenized, it can be left even if the moisture content of the material to be treated changes in addition to the regular measurement. It is appropriately treated and always maintained in a good moisture state.

Explanatory drawing of the moisture meter for waste disposal tanks of Example 1 attached to the side wall of the toilet tank of a biotoilet. The timing chart figure which shows the regular measurement operation | movement of the moisture content of the to-be-processed object performed with the moisture meter for biotoilets of Example 1. FIG. Explanatory drawing of the moisture meter for waste disposal tanks of Example 2 attached to the side wall of the toilet tank of a biotoilet. The timing chart figure which shows the regular measurement operation | movement of the moisture content of the to-be-processed object performed with the moisture meter for biotoilets of Example 2. FIG. Cross-sectional explanatory drawing which shows the attachment state of the outline | summary for waste treatment tanks and the moisture analyzer for waste treatment tanks which Example 1, 2 and a comparative example apply. Explanatory drawing of the moisture meter for waste processing tanks of Example 3 attached to the side wall of the processing tank of a garbage processing machine. Explanatory drawing of the moisture meter for waste processing tanks of the comparative example attached to the side wall of the toilet tank of a biotoilet.

  A mode for carrying out the invention will be described in detail based on an embodiment with reference to the drawings.

<Example 1>
As shown in FIG. 1, the moisture meter for a waste treatment tank of Example 1 includes two electrodes 2a and 2b that are spaced apart from each other on a side wall 1 of a toilet tank 12 of a biotoilet, and the two electrodes. A DC constant voltage power source 3 for applying a voltage between 2a and 2b, a power source unit 6 having a switch unit 4 and a voltage dividing resistor 5, and a voltmeter for measuring a voltage applied between the two electrodes 2a and 2b 7a and an A / D conversion unit 7b for A / D converting the output thereof, and a control unit 8 for controlling the switch unit 4 and the measurement unit 7 of the power supply unit 6.

  As shown in FIG. 1, each of the electrodes 2a and 2b is composed of hemispherical bodies 2a1 and 2b1 and bolt-shaped connecting portions 2a2 and 2b2 extending from the center of the back surface of the circular flat surface, and is integrally formed of stainless steel. Is. These electrodes 2a and 2b are attached to the side wall 1 of the toilet tub 12 through an insulating plate 9, as shown in FIG. The insulating plate 9 has two mounting holes 9a penetrating from one surface to the other surface at intervals between the electrodes 2a and 2b. The mounting holes 9a and 9a are formed on one surface side of the insulating plate 9. The cylindrical portions 9b and 9b are projected in a coaxial state.

  As shown in FIG. 1, the insulating plate 9 is arranged so that one surface thereof is in contact with a predetermined position on the inner surface side of the side wall 1 of the toilet tub 12, and the cylindrical portions 9 b and 9 b are attached to the side wall 1. The electrodes 2a and 2b are inserted into through-holes opened at intervals. The electrodes 2a and 2b are inserted into the mounting holes 9a and 9a of the insulating plate 9 through the washers 12 from the inside of the toilet tub 12 and protrude to the outside of the toilet tub 12, respectively. Further, the bases of the washers and the terminal pieces 10 and 10 are locked to the bolt-like connecting portions 2a2 and 2b2 from the outside, and nuts are screwed together to connect the electrodes 2a and 2b together with the insulating plate 9 Fix to state.

  In the first embodiment, the electrodes 2a and 2b are configured as described above and attached to the side wall 1 of the toilet tub 12 through the insulating plate 9 as described above. Neither is it limited to this. The electrodes 2a and 2b are made of conductive metal which does not easily generate rust, can be configured in various shapes, and can be attached in a watertight state while maintaining insulation with other members. The attachment mode to the side wall 1 of the tank 12 is also free.

  As described above, the power source unit 6 includes the DC constant voltage power source 3, the switch unit 4, and the voltage dividing resistor 5 in the first embodiment. Share with that for your control unit. The drawings are drawn as being independent of those of the biotoilet, and the explanation is given as such, but for convenience of explanation, this is only done for convenience. In the first embodiment, the switch unit 4 uses a mechanical switch. However, the present invention is not limited to this, and a semiconductor switch can be used freely. The voltage dividing resistor 5 divides the output voltage of the DC constant voltage power source 3 by this and the resistance of the object 11 to be processed between the two electrodes 2a and 2b.

  In detail, as shown in FIG. 1, the DC constant voltage power source 3 has its anode side connected to the terminal piece 10 of the electrode 2a via the switch unit 4 and its cathode side divided as a voltage dividing resistor. 5 is connected to the terminal piece 10 of the electrode 2b.

  As described above, the voltmeter 7a of the measuring unit 7 is a means for measuring the voltage applied between the electrodes 2a and 2b. In the first embodiment, an analog voltmeter is used. A voltage value, which is an analog signal measured by the voltmeter 7a, is converted into a digit signal by an A / D converter 7b provided in the measuring unit 7 and output. Of course, a digital type can be adopted as the voltmeter 7a. In this case, since the A / D conversion unit is built in the voltmeter, the output is directly supplied to the control unit 8. Can be handed over. Naturally, the voltmeter 7a of the measuring unit 7 has its anode side connected to the terminal piece 10 of the electrode 2a and its cathode side connected to the terminal piece 10 of the electrode 2b.

  The control unit 8 also shares a bio toilet control device. Although depicted on the drawing as being independent of that of a biotoilet, it is only done for illustrative purposes.

  As a function for the waste processing tank moisture meter, the control unit 8 performs on / off control of the switch unit 4 of the power source unit 6 so as to intermittently apply a voltage between the two electrodes 2a and 2b. The value of the voltage applied between the two electrodes 2a and 2b measured by the voltmeter 7a of the measuring unit 7 during the ON time is sampled at a predetermined timing, and the A / D converting unit 7b D conversion is performed and control is performed to receive this as a moisture value. Specifically, in the first embodiment, as shown in FIG. 2 (a), the switch unit 4 is controlled to turn on every 0.5 second every 6 hours (6 times in 24 hours). As shown in FIG. 2 (b), the voltage value (analog signal) measured by the voltmeter 7a is further sampled by the A / D converter 7b during the further 50 ms, and this is A / D converted. Then, the measurement unit 7 is controlled so as to receive the obtained digital signal as a moisture value.

  In addition to this, when it is detected that the toilet is used by a sensor (not shown) on the biotoilet side, after that, one cycle of the agitating means 13 described later (forward rotation for a fixed time → stop for a fixed time) After the end of (→ reversal of fixed time → stop of fixed time), the value of the voltage measured by the voltmeter 7a during the same time is controlled so that the switch unit 4 is turned on only for 0.5 seconds. Are further sampled and A / D converted by the A / D conversion unit 7b for 50 ms in the meantime, and the measurement unit 7 is controlled to receive the obtained digital voltage signal as a moisture value signal. Based on the value of the received voltage, the control unit 8, as will be described later, in order to maintain the moisture content of the workpiece 11 in the range of 15% to 40% (volume ratio), The operation of the exhaust means, the warming means 14, the water supply means and the like is controlled.

Next, the outline of the biotoilet to which the moisture meter for waste treatment tank of this embodiment is applied will be briefly described.
As shown in FIG. 5, this includes a stool 12 that contains a processed material 11 that is excrement introduced from a toilet and performs microbial treatment, a processing means disposed in the stool 12, its control device, and a direct current. It consists of a constant voltage power supply. As shown in the figure, the processing means includes a stirring means 13 composed of a rotating shaft arranged along the length direction of the toilet tub 12 and rotating blades arranged on the shaft, and an outer surface of the side wall 1 of the toilet tub 12 The heating means 14 arranged in the water supply means, the water supply means for supplying purified water into the toilet tub 12, and the exhaust means. The water supply means shows only the water supply pipe 15 which is a part of the water supply means, and the exhaust means shows only the exhaust port 16a and the intake port 16b. The air inlet 16b is an inlet for introducing the atmosphere into the upper part of the decompressed toilet tub 12 when the air in the upper space of the toilet tub 12 is exhausted by operating the exhaust means. . In addition, in the same figure, D is a moisture meter for waste processing tanks, C is a circuit of a power supply and a measurement part.

The control device refers to the measured value (moisture value (moisture rate) derived from the resistance value) received from the measuring unit 7 of the moisture meter for the waste treatment tank, and sets the reference value appropriately set according to the season. Based on this, the operations of the agitation means 13, the heating means 14, the water supply means and the exhaust means are controlled. An example of the reference value is as follows.
Level 0 = moisture content of object 11 to be treated 5% 1 = moisture content of object 11 to be treated 5% to less than 15% Level 2 = moisture content of object 11 to be treated 15% to less than 40% Level 3 = treatment Moisture content 40% or more and less than 50% of the object 11 Level 4 = moisture content 50% or more of the object 11 (the above moisture content is volume ratio)
In addition, when it becomes level 4, it is beyond the range which can recover | restore normal activity of microorganisms by operation | movement of processing means, such as the stirring means 13. FIG. Therefore, in this case, the control device issues an alarm to the administrator.

  Based on the above reference value, the control device controls the operation of the processing means, for example, as follows to maintain the moisture content of the workpiece 11 in a range of about 15 to 40%. .

In the case of level 0, the exhaust means sets the exhaust air volume from the exhaust port 16a to 1 m ³ / min, the stirring means 13 stops its operation, and the heating means 14 stops its operation, Each of the water supply means controls to supply purified water from the water supply pipe 15.

In the case of level 1, the exhaust means sets the exhaust air volume from the exhaust port 16a to 3 m ³ / min, and the agitation means 13 operates for 3 minutes in the normal rotation → 1 minute in the stop → 3 minutes in the reverse direction → 1 minute in the stop. The heating means 14 controls the water supply means to stop introducing clean water from the water supply pipe 15 so that the temperature becomes 60 ° C.
In the case of level 2, the exhaust means sets the exhaust air volume from the exhaust port 16a to 4.5 m ³ / min, and the agitation means 13 detects this in the forward rotation 4 minutes → stop 1 minute → reverse rotation 4 minutes → stop 1 minute. In order to repeat the above operation, the heating means 14 controls the water supply means to stop introducing clean water from the water supply pipe 15 so that the temperature becomes 120 ° C.

In the case of level 3, the exhaust means sets the exhaust air volume from the exhaust port 16a to 5.0 m ³ / min, and the agitation means 13 detects this in 5 minutes for normal rotation → 1 minute for stop → 5 minutes for reverse rotation → 1 minute for stop. In order to repeat the above operation, the heating means 14 controls the water supply means so as to stop the introduction of purified water from the water supply pipe 15 so that the temperature becomes 150 ° C.
In the case of level 4, as described above, the control device operates a notifying means prepared separately and issues a warning to the administrator. This is because it is left to manual processing of the workpiece 11 by the administrator.

  Therefore, according to the moisture meter for waste treatment tank of the first embodiment, basically, as shown in FIG. 2 (a), the switch unit 4 of the power source unit 6 is switched every 4 hours by the control unit 8. It is controlled to be turned on every 0.5 seconds. At that time, a current corresponding to a resistance value determined by the moisture state of the workpiece 11 positioned between the electrodes 2a and 2b flows, and a voltage drop occurs. On the other hand, the voltage generated between the electrodes 2a and 2b is measured by the voltmeter 7a of the measurement unit 7 during the on-time of the switch unit 4 for 0.5 seconds, as shown in FIG. As shown in the figure, the analog value is sampled by the A / D converter 7b during the period of 50 ms and A / D converted into a digital voltage value signal, which is sent to the control unit 8 as a moisture value signal. It is controlled by the control unit 8 so that the

  Further, according to the moisture meter for waste treatment tank of Example 1, in addition to this, when it is detected by the control unit 8 that the toilet is used by a sensor (not shown) on the biotoilet side, the subsequent stirring is performed. After the operation of one cycle of means 13 (forward rotation for a fixed time → stop for a fixed time → reverse rotation for a fixed time → stop for a fixed time according to the moisture content level at that time), the switch unit 4 is set to 0. It is controlled to be turned on only for 5 seconds, and a current corresponding to the resistance value determined by the moisture state of the workpiece 11 located between the electrodes 2a and 2b flows between the electrodes 2a and 2b in the same manner as described above. On the other hand, the value of the voltage measured by the voltmeter 7a of the measuring unit 7 is sampled by the A / D converting unit 7b during the further 50 ms and A / D converted, and the obtained digital value is obtained. The measurement unit 7 is also controlled to send the voltage value signal to the control unit 8.

  In the control device for the biotoilet that also serves as the control unit 8, the received moisture value signal (moisture rate signal) is compared with a reference value, and according to the corresponding level, the exhaust means, the agitation means 13, and the heating means 14 and the water supply means are controlled to operate as described above, and the moisture content of the object 11 in the toilet 12 is maintained between 15% and 40% (volume ratio).

  As described above, basically, the moisture content of the object to be treated 11 is measured every 4 hours, and the processing means such as the stirring means 13 and the exhaust means are adapted to the moisture content of the object to be treated 11 at that time. When the toilet is used, the moisture content is measured immediately after the subsequent homogenization operation of the object 11 by the stirring means 13, and the object 11 at that time is measured. Since the processing means such as the stirring means 13 suitable for the moisture content of the material is operated, even if the moisture content of the workpiece 11 is measured intermittently and only relatively few times. The moisture content of the object to be treated 11 can always maintain a good state.

Furthermore, the number of times of measurement of the moisture content of the object to be processed 11 is at least 6 times a day in this Example 1, but the toilet is frequently used, for example, 14 hours from 8 am to 10 pm Assuming that it is used 70 times at 5 times / hour during the time, the moisture content of the object to be processed 11 is measured each time, so the total time of the day when the current flows between the electrodes 2a and 2b is
Total current flow time = (70 + 6) (times) x 0.5 (seconds)
= 38 (seconds)
Even one year is 13870 seconds (3 hours 51 minutes 10 seconds). An electrode connected to the anode of the DC constant voltage power supply 3 via the switch unit 4 was tested under this condition, a voltage of 5 V of the DC constant voltage power supply 3 and a resistance value of 20 kΩ of the voltage dividing resistor 5. The surface of both the electrodes 2a and 2b including 2a was slightly lost in gloss, but no obvious rust was observed.

<Example 2>
As shown in FIG. 3, the moisture meter for a waste treatment tank of Example 2 includes two electrodes 2 a and 2 b that are spaced apart from each other on the inner surface side of the side wall 1 of the toilet tank 12 of the biotoilet, A DC constant voltage power source 23 for applying a voltage between the two electrodes 2a and 2b, a power source unit 26 having a two-circuit three-contact changeover switch unit 24 and a voltage dividing resistor 25, and the two electrodes 2a and 2b A control unit that controls a measuring unit 27 including a voltmeter 27a that measures a voltage applied between them and an A / D conversion unit 27b that performs A / D conversion on the output, and a control unit that controls the changeover switch unit 24 and the measuring unit 27 of the power supply unit 28.

  The electrodes 2a and 2b have the same configuration as the electrodes 2a and 2b of the first embodiment, and are similarly attached to the side wall 1 by the insulating plate 9 used in the first embodiment.

  As described above, the power supply unit 26 includes the DC constant voltage power source 23, the changeover switch unit 24, and the voltage dividing resistor 25 in the second embodiment. Similar to that of Example 1, share it with that for the biotoilet controller. The drawing is drawn as being independent from that of the biotoilet, and the explanation is given as such, but this is done for convenience of explanation only. The changeover switch section 24 is a two-circuit, three-contact switch, comprising branch switches 24a, 24b, and three contacts a, b, c that can be switched in conjunction with the terminal d on the base side. It is equipped with. In the second embodiment, as in the first embodiment, a mechanical type is used. However, the present invention is not limited to this, and a semiconductor switch can be used freely. Similarly to the voltage dividing resistor 5 of the first embodiment, the voltage dividing resistor 25 includes the output voltage of the DC constant voltage power supply 23 and the object 11 to be processed between the two electrodes 2a and 2b. The voltage is divided by resistance.

  Specifically, the terminal piece 10 of the electrode 2a is connected to the terminal d on the base side of the branch switch 24a of the changeover switch part 24, and the terminal piece 10 of the electrode 2b is connected to the changeover switch part. The other branch switch 24b is connected to a terminal d on the base side. The contact point a of the contacts a, b and c of the branch switch 24a and the contact point c of the contacts a, b and c of the branch switch 24b are divided into the anode side of the DC constant voltage power source 23, respectively. Connect through resistor 25. The cathode side of the DC constant voltage power supply 23 is connected to the contact c of the contacts a, b, c of the branch switch 24a and the contact a of the contacts a, b, c of the branch switch 24b, respectively. To do. Nothing is connected to the contact b of each of the branch switches 24a and 24b.

  As described above, the voltmeter 27a of the measuring unit 27 is a means for measuring the voltage applied between the electrodes 2a and 2b. In the second embodiment, as in the first embodiment, an analog voltmeter is used. Adopted. A voltage value, which is an analog signal measured by the voltmeter 27a, is converted into a digit signal by an A / D conversion unit 27b provided in the measurement unit 27 and output. Of course, a digital type can be adopted as the voltmeter 27a. In this case, since the A / D converter is built in the voltmeter, the output is directly supplied to the controller 28. Can be handed over. The voltmeter 27a of the measuring unit 27 has its anode side connected between the contact a of the branch switch 24a of the changeover switch unit 24, the contact c of the branch switch 24b, and the voltage dividing resistor 25. The cathode side is connected to the cathode side of the DC constant voltage power supply 23. The purpose is to measure the voltage between the electrodes 2a, 2b.

  The control unit 28 also shares a bio toilet control device. Although depicted on the drawing as being independent of that of a biotoilet, it is only done for illustrative purposes.

  The controller 28 functions as a moisture meter for the waste treatment tank. First, the control unit 28 supports the changeover switch unit 24 of the power source unit 26 so as to intermittently apply a voltage between the two electrodes 2a and 2b. The minute switches 24a and 24b are interlocked to be turned on / off and switched, and the value of the voltage applied between the two electrodes 2a and 2b measured by the voltmeter 27a of the measuring unit 27 during the on-time is set to a predetermined value. Sampling is performed at the timing, A / D conversion is performed by the A / D conversion unit 27b, and control is performed to receive the value of this voltage as the moisture value. Specifically, in the second embodiment, as shown in FIG. 4A, the changeover switch section 24 is turned on every 0.3 seconds every two hours (12 times in 24 hours). Further, the polarity switch 24a, 24b is switched to the contact b at most of the time when the switch is turned on, that is, when the switch is turned on every two hours, the respective contacts of the branch switches 24a, 24b are switched. The closing of a or the closing of each contact c is alternately repeated, and the polarity of the voltage applied between the electrodes 2a and 2b at the time of turning on is controlled to be reversed every time. Then, the voltage value (analog signal) measured by the voltmeter 27a within each ON time (0.3 seconds) is converted into an A / D converter for another 50 ms as shown in FIG. 4 (b). The measurement unit 27 is controlled so as to receive a voltage value, which is a digital signal obtained by sampling and A / D conversion by the unit 27b, as a moisture value.

  In addition to this, when it is detected that a toilet is used by the sensor on the biotoilet side, after that, one cycle operation of the stirring means 13 (forward rotation for a fixed time → stop for a fixed time → fixed) After completion of time reversal → stop for a certain period of time, the changeover switch unit 24 is similarly controlled so as to be on for 0.3 seconds while switching as described above, during which time measurement is performed with the voltmeter 27a. The A / D converter 27b samples the value of the current voltage for 50 ms in the meantime, performs A / D conversion, and controls the measuring unit 27 to receive the obtained digital voltage signal as a moisture value signal. To do. Based on the value of the received voltage, the control unit 28 is configured to maintain the moisture content of the workpiece 11 in the range of 15% to 40% (volume ratio) in the same manner as described in the first embodiment. The operations of the toilet stirring means 13, the exhaust means, the heating means 14, the water supply means, and the like are controlled.

  The configuration and operation of the biotoilet are exactly the same as described for the first embodiment.

  Therefore, according to the moisture meter for the waste treatment tank of the second embodiment, basically, the control unit 28 causes the changeover switch 24 of the power supply unit 26 to have the electrodes 2a, 2b every 0.3 second every 2 seconds. In this case, a current corresponding to the resistance value determined by the moisture state of the workpiece 11 located between the electrodes 2a and 2b flows between the electrodes 2a and 2b, and a voltage drop occurs. . On the other hand, the voltage generated between the electrodes 2a and 2b is measured by the voltmeter 27a of the measurement unit 27 during the on-time of the changeover switch unit 24 for 0.3 seconds, and further 50 ms in the meantime. In the meantime, the analog value is sampled by the A / D converter 27b and A / D converted into a digital voltage value signal, which is sent to the control unit 28 as a moisture value signal. It is controlled by.

  Further, according to the moisture meter for waste treatment tank of Example 2, in addition, when the control unit 28 detects that the toilet is used by a sensor (not shown) on the biotoilet side, the agitation is continued. After the operation of one cycle of means 13 (forward rotation for a fixed time → stop for a fixed time → reverse rotation for a fixed time → stop for a fixed time according to the moisture content level at that time), the switch unit 24 is immediately before The resistance value determined by the moisture state of the workpiece 11 positioned between the electrodes 2a and 2b is the same as described above by controlling the polarity so that it is turned on only for 0.3 seconds by inverting the polarity. So that a current corresponding to the current flows. On the other hand, the voltage value measured by the voltmeter 27a of the measuring unit 27 was sampled by the A / D conversion unit 27b during the further 50 ms and obtained by A / D conversion. The measurement unit 27 is also controlled to send the digital voltage value signal to the control unit 28.

  In the control device for the biotoilet which also functions as the control unit 28, the received moisture value signal (moisture rate signal) is compared with the reference value, and is distributed to the toilet tub 12 according to the corresponding level, as in the first embodiment. The exhaust means, the agitation means 13, the heating means 14 and the water supply means are controlled so as to operate properly, and the moisture content of the object 11 in the stool 12 is maintained between 15% and 40%. Like that.

  Further, as described above, basically, the moisture content of the object to be treated 11 is measured every two hours, and the processing means such as the stirring means 13 and the exhaust means are adapted to the moisture content of the object to be treated 11 at that time. When the toilet is used, the moisture content is measured immediately after the stirring means 13 performs the homogenizing operation of the workpiece 11 and the moisture content of the workpiece 11 at that time is measured. Even if the measurement of the moisture content of the workpiece 11 is intermittently performed only a relatively small number of times, the moisture content of the workpiece 11 is A good state can be maintained at all times.

Furthermore, the number of measurements of the workpiece 11 is 12 times a day at a minimum, but the toilet is frequently used, for example, 5 times / hour during 14 hours from 8 am to 10 pm Assuming that it has been used 70 times, the measurement of the object to be processed is performed each time, and a current whose polarity is alternately reversed flows between the electrodes 2a and 2b.
Therefore, the total time that current flows between the electrodes 2a and 2b is
Total current flow time = (70 + 12) (times) × 0.3 (seconds)
= 24.6 (seconds)
Even in one year, it is 8979 seconds (2 hours 29 minutes 39 seconds). When the test was performed under this condition, the voltage of the DC constant voltage power supply 23 and the resistance value of the voltage dividing resistor 25 of 20 kΩ, the surface of each of the electrodes 2a and 2b was not lost in glossiness, and The generation of rust was not observed at all. Since the polarity of the current flowing between the electrodes 2a and 2b is reversed every time, the electrolytic corrosion does not progress further.

<Example 3>
As shown in FIG. 6, the moisture meter for the waste treatment tank according to the third embodiment includes two electrodes 2 a and 2 b arranged to be spaced apart from each other on the inner surface side of the side wall 31 of the treatment tank 32 of the garbage disposal machine. A DC constant voltage power supply 33 for passing a current between the two electrodes 2a and 2b, a power supply part 36 including a switch part 34 and a current limiting resistor 35, and a current flowing between the two electrodes 2a and 2b. The measurement unit 37 includes an ammeter 37a to be measured and an A / D conversion unit 37b for A / D converting the output, and a control unit 38 for controlling the switch unit 34 and the measurement unit 37 of the power supply unit 36. Is.

  The electrodes 2a and 2b have the same configuration as that of the first embodiment, and are similarly attached to the side wall 31 of the treatment tank 32 of the garbage disposal machine by the insulating plate 9 used in the first embodiment.

  As described above, the power source unit 36 is composed of the DC constant voltage power source 33, the switch unit 34, and the current limiting resistor 35 in the third embodiment. Share with that for the processor controller. In the drawing, it is drawn as being independent of that of the garbage disposal machine, and the explanation is made in this way, but this is only done for convenience of explanation. In the third embodiment, the switch unit 34 uses a mechanical type as in the first embodiment. However, the present invention is not limited to this, and a semiconductor switch can be used freely. Moreover, the current limiting resistor 35 limits the excessive current so that it does not flow depending on the moisture state or component state of the workpiece 11.

  In the third embodiment, the DC constant voltage power source 33 has its anode side connected to the terminal piece 10 of the electrode 2a via the switch portion 34, and its cathode side connected to a current limiting resistor 35 and an ammeter 37a. To the terminal piece 10 of the electrode 2b.

  As described above, the ammeter 37a of the measuring unit 37 is a means for measuring the current flowing between the electrodes 2a and 2b. In the third embodiment, an analog ammeter is employed. The current value, which is an analog signal measured by the ammeter 37a, is converted into a digit signal by an A / D conversion unit 37b provided in the measurement unit 37 and output. Of course, it is possible to adopt a digital type as the ammeter 37a. In this case, since the A / D converter is built in the ammeter, its output is directly supplied to the controller 38. Can send. Needless to say, the ammeter 37a of the measuring unit 37 described above has its anode side connected to the terminal piece 10 of the electrode 2b and its cathode side connected to the cathode side of the DC constant voltage power source 33 via the current limiting resistor 35. Connecting.

  The control unit 38 also shares the control device of the garbage disposal machine. In the drawing, it is depicted as being independent of that of the garbage disposal machine, but this is only for convenience of explanation.

  The control unit 38 controls the on / off of the switch unit 34 of the power supply unit 36 so that a current flows intermittently between the two electrodes 2a and 2b as a function for the moisture meter for the waste treatment tank. During the ON time, the value of the current flowing between the two electrodes 2a and 2b measured by the ammeter 37a of the measurement unit 37 is sampled at a predetermined timing, and the A / D conversion unit 37b performs A / D It is controlled to receive this as a moisture value. Specifically, in the third embodiment, the switch unit 34 is controlled to turn on every 0.3 second every 2 hours (12 times in 24 hours), and an ammeter for another 50 ms. The current value (analog signal) measured at 37a is sampled by the A / D converter 37b and A / D converted, and the measured digital signal is received as a moisture value. The unit 37 is controlled.

  In addition to this, when it is detected by a sensor (not shown) on the side of the garbage processor that new garbage is thrown in, one cycle operation of the agitating means 13 is then performed as in the first embodiment. After the end of (forward rotation for a fixed time → stop for a fixed time → reverse rotation for a fixed time → stop for a fixed time), the switch unit 34 is similarly controlled to be turned on for 0.3 seconds, The value of the current measured by the ammeter 37a is further sampled by the A / D converter 37b for 50 ms in the meantime and A / D converted, and the obtained digital current signal is used as the moisture value signal. The measurement unit 37 is controlled to receive the data.

  Based on the received current value, the control unit 38 maintains the moisture content of the workpiece 11 within a range of 15% to 35% (volume ratio). The operation of the temperature means and the water supply means is controlled. The configuration of the garbage processing machine to which this waste processing tank moisture meter is applied is the same as that of the biotoilet described in the first embodiment.

  Therefore, according to the moisture meter for a waste treatment tank of the third embodiment, basically, the control unit 38 is configured so that the switch unit 34 of the power source unit 36 is turned on every 0.3 second for every 2 hours. At this time, a current corresponding to a resistance value determined by the moisture state of the workpiece 11 located between the electrodes 2a and 2b flows between the electrodes 2a and 2b. On the other hand, the current flowing between the electrodes 2a and 2b is measured by the ammeter 37a of the measurement unit 37 during the ON time of the switch unit 34 for 0.3 seconds, and during the period of 50 ms. The analog value is sampled by the A / D converter 37b and A / D converted into a digital current value signal, which is sent to the control unit 38 as a moisture value signal. Is done.

  Further, according to the moisture meter for waste treatment tank of the third embodiment, when the control unit 38 detects that a new garbage is introduced by a sensor (not shown) on the garbage disposal side. After the operation of one cycle of the subsequent stirring means (forward rotation for a fixed time → stop for a fixed time → reverse rotation for a fixed time → stop for a fixed time according to the moisture content level at that time), the switch unit 34 is controlled to be turned on only for 0.3 seconds, and in the same manner as described above, a current corresponding to the resistance value determined by the moisture state of the workpiece 11 positioned between the electrodes 2a and 2b flows. To. On the other hand, the value of the current measured by the ammeter 37a of the measuring unit 37 is sampled and A / D converted by the A / D converting unit 37b during the further 50 ms, and a digital current value signal is obtained. The measurement unit 37 is also controlled so as to be sent to the control unit 38.

  In the control device of the garbage processing machine that also serves as the control unit 38, the received moisture value signal (moisture rate signal) is compared with a preset reference value, and the exhaust unit, the stirring unit, The heating means and the water supply means are controlled to operate appropriately so that the moisture content of the object 11 in the treatment tank 32 is maintained between 15% and 35% (volume ratio).

  In addition, as described above, basically, the moisture content of the workpiece 11 is measured every two hours, and the processing means such as the stirring means and the exhaust means is adapted to the moisture content of the workpiece 11 at that time. In the case where new garbage is introduced, the moisture content is measured immediately after the workpiece 11 is homogenized by the stirring means, and the moisture content of the workpiece 11 at that time is determined. Since the suitable processing means is operated, even if the moisture content of the workpiece 11 is measured intermittently and only relatively few times, the moisture content of the workpiece 11 is It can maintain a good state at all times.

Further, in Example 3, the number of times of measurement of the moisture content of the object 11 is 12 times a day at a minimum. However, the toilet is frequently used, for example, 14 hours from 8 am to 10 pm. If it is used 70 times at 5 times / hour during the time, the moisture content of the object to be treated is also measured each time, so the total time of the day when the current flows between the electrodes 2a and 2b is
Total current flow time = (70 + 12) (times) × 0.3 (seconds)
= 24.6 (seconds)
Even in one year, it is 8979 seconds (2 hours 29 minutes 39 seconds). An electrode connected to the anode of the DC constant voltage power supply 33 via the switch unit 34 was tested under this condition, a voltage of 5 V of the DC constant voltage power supply 33, and a resistance value of 20 kΩ of the current limiting resistor 35. The surface of both the electrodes 2a and 2b including 2a was not particularly lost in gloss and no rust was observed.

<Comparative example>
As shown in FIG. 7, the moisture meter for a waste treatment tank of this comparative example has two electrodes 2a and 2b which are arranged apart from each other on the side wall 1 of the toilet tank 12 of the biotoilet, and the two electrodes 2a. A power supply unit 46 including a DC constant voltage power supply 43 and a voltage dividing resistor 45 for applying a voltage between 2b, a voltmeter 47a for measuring a voltage applied between the two electrodes 2a and 2b, and an output thereof. It is that of the past comprised with the measurement part 47 which consists of the A / D conversion part 47b which performs A / D conversion.

  The output voltage of the DC constant voltage power supply 43 is 5V, and a voltage divided by the voltage dividing resistor 45 is applied between the electrodes 2a and 2b, so that a current flows. ing. The resistance value of the voltage dividing resistor 45 is 20 kΩ.

  As a result of testing under these conditions, the electrode 2a connected to the anode of the DC constant voltage power source 43 was completely rusted and damaged in one year, making it unusable.

DESCRIPTION OF SYMBOLS 1 Side wall 2a, 2b Electrode 2a1, 2b1 Semispherical main body 2a2, 2b2 Bolt-shaped connection part 3 DC constant voltage power supply 4 Switch part 5 Voltage dividing resistor 6 Power supply part 7 Measurement part 7a Voltmeter 7b A / D conversion part 8 Control part DESCRIPTION OF SYMBOLS 9 Insulating plate 9a Mounting hole 9b Tube part 10 Terminal piece 11 To-be-processed object 12 Toilet 13 Stirring means 14 Heating means 15 Water supply pipe 16a Exhaust port 16b Intake port 23 DC constant voltage power supply 24 Changeover switch part 24a, 24b Branch switch d Base side terminal a, b, c contact 25 Voltage dividing resistor 26 Power supply unit 27 Measurement unit 27a Voltmeter 27b A / D conversion unit 28 Control unit 31 Side wall 32 Treatment tank 33 DC constant voltage power supply 34 Switch unit 35 Current limit Resistor 36 Power supply unit 37 Measurement unit 37a Ammeter 37b A / D conversion unit 38 Control unit 43 DC constant voltage power supply 45 Voltage divider resistor 46 Source unit 47 measuring unit 47a voltmeter 47b A / D conversion unit C power supply and circuit D waste tank for moisture meter measuring unit

Claims (4)

Two electrodes arranged apart from each other in the object to be treated in the waste treatment tank;
A power supply unit comprising a DC power supply for applying a voltage or passing a current between the two electrodes;
A measurement unit comprising a voltmeter or an ammeter for measuring a voltage applied between the two electrodes or a current flowing between the two electrodes;
Control the power supply unit to intermittently apply voltage or flow current between the two electrodes, and measure at the measurement unit when intermittently applying voltage or flowing current between the two electrodes A control unit that controls to receive a voltage applied between the two electrodes or a current value flowing between the two electrodes as a moisture value;
Moisture meter for waste treatment tank composed of The power supply unit comprises a switch unit capable of switching the polarity of the voltage or current applied between the two electrodes, and the intermittent application of the voltage or current applied to the two electrodes from the DC power source,
2. The moisture meter for a waste treatment tank according to claim 1, wherein the control unit is configured to control the switch unit so as to reverse the polarity every time a voltage is intermittently applied to the two electrodes or a current flows. .   In order to perform the operation of applying a voltage intermittently or flowing a current between the two electrodes once every 1 to 4 hours, and applying a voltage each time between the two electrodes. The moisture meter for a waste treatment tank according to claim 2, wherein the switch unit of the power supply unit is controlled so that the time or the time for passing the current is 0.3 to 0.5 seconds.   When a new object to be treated is introduced and the agitation means in the waste treatment tank is operated, the control unit is immediately further inserted between the two electrodes by 0.3 to 0.5. The moisture meter for a waste treatment tank according to claim 3, wherein the switch of the power supply unit is controlled so as to perform an operation of applying a voltage or flowing a current for a second.

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