JP6536705B1 - Water supply equipment - Google Patents

Abstract

An object of the present invention is to provide an apparatus capable of suppressing an increase in cost in management, manufacture, or construction of an apparatus having a plurality of slaves.
A watercraft apparatus comprising: a plurality of slaves; and a master that communicates with the plurality of slaves and controls the plurality of slaves, wherein the master transmits a search signal to each of the plurality of slaves. And, among the plurality of slaves, there is an automatic slave address determination mode for determining a slave address of the slave that has returned a reply to the search signal, and in the automatic slave address determination mode, the master A watercraft device is provided, comprising transmitting the signal a plurality of times and terminating the automatic slave address determination mode when it is determined that all of the plurality of slaves have returned in response to the search signal.
[Selected figure] Figure 5

Description

  Aspects of the present invention generally relate to plumbing devices.

  For example, a water faucet device, which is a type of a plumbing device, may be provided with a sensor that detects an object such as a user's hand, and an electromagnetic valve that controls water discharge based on an output from the sensor. Furthermore, in recent years, it is also performed to control the discharge of soap water or to control the ejection of drying air based on the output from the sensor.

  In such a water faucet apparatus, for example, a control system called a master / slave system is adopted. In the master / slave method, each of a plurality of sensors serves as a slave, and a control unit that issues commands to the plurality of sensors or controls devices such as electromagnetic valves based on results of detection processing from the plurality of sensors is a master It becomes. Then, the master controls the desired device while communicating with the master and the plurality of slaves.

  In communication in the master / slave system, an I2C (Inter-Integrated Circuit) system is often employed (see, for example, Patent Document 1). In the I2C system, a plurality of slaves are connected to one clock supply line and one data transmission line. Further, a write (Write) signal and a read (Read) signal regarding each of the plurality of slaves are sequentially transmitted.

  Individual slave addresses are assigned to each of the plurality of slaves, and any one of the slave addresses is included in the write signal and the read signal. The slave address identifies one of the plurality of slaves. Each slave operates in accordance with an instruction of a signal (write signal, read signal) including a slave address assigned to itself. The slave address identifies the slave and allows the master to control the desired slave.

JP, 2009-88657, A

  Even in the case where the water supply apparatus has a plurality of slaves (for example, sensors of the same specification) performing the same operation, individual slave addresses are assigned to each of the plurality of slaves. That is, a plurality of slaves (sensors) which are different only in the slave address to be assigned are used.

For example, when one sensor fails and a failed sensor is replaced with a new sensor, a sensor with the same slave address as the slave address of the failed sensor will be used. Therefore, in this case, sensors that differ only in the slave address will be managed separately. For example, even in the case of using sensors of the same specification, sensors with different part numbers for each slave address are managed. For this reason, there is a possibility that the management cost may increase when the repair of the plumbing equipment is taken into consideration.
Further, even when using sensors of different specifications, management corresponding to the slave address may be burdensome.

  On the other hand, a method may be considered in which the same slave address is given to a plurality of slaves by providing a communication line switching circuit which appropriately switches the communication line between the master and the slave. When the master communicates with any one slave, the communication line switching circuit shuts off communication between the slave of the same slave address and the master. Thus, even if there are a plurality of slaves having the same slave address, any one slave can be identified. However, in this case, the manufacturing cost and the construction cost for providing the communication line switching circuit increase. In addition, there is a risk that the size of the water-supplying device may be increased.

  The present invention has been made based on the recognition of such problems, and it is an object of the present invention to provide a watercraft apparatus capable of suppressing an increase in cost in management, manufacture, or construction of a watercraft apparatus having a plurality of slaves. To aim.

A first invention is a watercraft apparatus including a plurality of slaves, and a master that communicates with the plurality of slaves and controls the plurality of slaves, wherein the master corresponds to each of the plurality of slaves. The slave has an automatic slave address determination mode for transmitting a search signal and determining a slave address of the slave which has returned a reply to the search signal among the plurality of slaves, and in the automatic slave address determination mode, the master The search signal is transmitted a plurality of times , and each of the plurality of slaves randomly determines in each case whether to reply to each of the plurality of search signals, and all of the plurality of slaves Mizukai, characterized in that the reply to probe signal and the master determines to end the automatic slave address determination mode It is a device.

  According to this plumbing apparatus, the slave address is automatically assigned to each slave according to the slave address automatic determination mode of the master, so that it is not necessary to manage the part number of the slave corresponding to the slave address and the communication line switching circuit. Thereby, the increase in the cost in manufacture and construction of plumbing equipment can be suppressed.

The second invention according to the first invention, each of the plurality of slaves, to the front Symbol search signal is a plumbing device, characterized in that return a signal imparted with the error detection code.

  According to this plumbing apparatus, it is possible to suppress that two or more slaves reply at the same time by the plurality of slaves replying randomly to the search signal. Also, even if two or more slaves reply to the search signal at the same time, the master can detect that two or more slaves reply by the error detection code. This can prevent the slave address from being executed correctly.

In a third invention according to the first invention, each of the plurality of slaves performs an object detection process, and determines whether or not to reply to the search signal based on the result of the detection process. In the case of an object being detected, the watercraft apparatus is characterized in that a signal provided with an error detection code is returned to the search signal.

  According to this plumbing apparatus, it is possible to suppress that two or more slaves reply at the same time by a plurality of slaves replying to the search signal based on the result of the detection processing. For example, the user can select a slave that replies to the search signal, by having only the slaves that want to send the search signal back to detect an object. Also, even if two or more slaves reply to the search signal at the same time, the master can detect that two or more slaves reply by the error detection code. This can prevent the slave address from being executed correctly.

A fourth aspect of the invention is the watercraft apparatus according to any one of the first to third aspects, wherein the master has a reset mode for resetting the slave address assigned to the slave.

  According to this watercraft device, even if an incorrect slave address is assigned to the slave, the slave address can be assigned to the slave again by resetting the slave address in the reset mode.

  According to an aspect of the present invention, it is possible to provide a plumbing apparatus capable of suppressing an increase in cost in management, manufacture, or construction of a plumbing apparatus having a plurality of slaves.

It is a block diagram which illustrates the plumbing device concerning an embodiment. It is a block diagram which illustrates a plumbing device concerning an embodiment. It is a flow chart which illustrates operation of a master of a plumbing device concerning an embodiment. It is a flow chart which illustrates operation of a slave of a plumbing device concerning an embodiment. Drawing 5 (a)-Drawing 5 (c) are timing charts which illustrate operation of a plumbing device concerning an embodiment. It is a flow chart which illustrates automatic slave address determination mode of a bowling machine concerning an embodiment. It is a flowchart which illustrates the slave address assignment mode of the watercraft apparatus which concerns on embodiment. FIGS. 8A and 8B are conceptual diagrams illustrating a flash memory. Fig.9 (a)-FIG.9 (d) are the timing charts which illustrate operation | movement of the water-surroundings apparatus which concerns on embodiment. Drawing 10 (a)-Drawing 10 (c) are timing charts which illustrate operation of a plumbing device concerning an embodiment. It is a flow chart which illustrates a normal mode of a master of a plumbing device concerning an embodiment. It is a flowchart which illustrates the slave address erase | elimination mode of the watercraft apparatus which concerns on embodiment. It is a flow chart which illustrates a slave's normal mode of a plumbing device concerning an embodiment. It is a flowchart which illustrates the slave address assignment mode of the watercraft apparatus which concerns on embodiment. It is a block diagram which illustrates a plumbing device concerning an embodiment. It is a block diagram which illustrates a plumbing device concerning an embodiment.

Hereinafter, embodiments of the present invention will be illustrated with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals and the detailed description will be appropriately omitted.
The apparatus for carrying around water according to the present embodiment can be provided, for example, in a bathroom, a washroom, a kitchen, a toilet, and the like. As the plumbing apparatus, for example, a faucet device, a bathtub, a shower device, a toilet bowl, a sanitary washing device, a urinal, a hand dryer and the like can be exemplified. In addition, the equipment for water circulation includes, for example, functions such as water discharge, washing, supply of warm water or warm air, temperature control or flow control of warm water or warm air, discharge of soap water, discharge of clean water or fresh water, ionic water or sterilizing water It can have functions such as generation and discharge of water, opening and closing of a toilet lid and a toilet seat. In addition, the water supply apparatus can be used in, for example, home, business, public facilities, and the like. However, the watercraft apparatus according to the present embodiment is not limited to the illustrated apparatus, functions, applications, and the like.
In the following, as an example, a case where the water circulation apparatus according to the present embodiment is a faucet device, and a water discharger, a soap water discharger, and a dryer are provided in the faucet device will be described as an example.

FIG. 1 is a configuration diagram illustrating a watercraft apparatus according to the embodiment.
The plumbing apparatus 1 (faucet apparatus) which concerns on embodiment can be provided in the washbasin 100, for example.
As shown in FIG. 1, the water circulation device 1 is provided with a water discharger 2, a soapy water discharger 3, a dryer 4, and a controller 5.

The water discharger 2 includes a water faucet 20, a water supply passage 21, a solenoid valve 22, a constant flow valve 23, a water shutoff valve 24, and an input device 25.
The faucet 20 can be provided, for example, on the upper surface of the wash basin 100. The water supply passage 21, the solenoid valve 22, the constant flow valve 23, and the stop valve 24 can be provided, for example, inside the wash basin 100. A water passage 20 a is provided in the faucet 20. One end of the water flow passage 20a opens at the tip of the faucet 20, and serves as a water discharge port 20b. The other end of the water flow passage 20 a is connected to the solenoid valve 22 via the water supply passage 21. The electromagnetic valve 22 performs the start of water discharge from the water discharge port 20b and the stop of water discharge. Further, a constant flow valve 23 and a water shutoff valve 24 can be provided in the water supply path on the water source side of the solenoid valve 22. The constant flow valve 23 supplies water at a constant flow rate to the water supply passage 21. If the constant flow rate valve 23 is provided, even when the pressure of water from the water source fluctuates, water having a constant flow rate can be supplied to the water supply passage 21. The water stop valve 24 is provided on the water source side of the constant flow rate valve 23, and switches between the inflow of water into the water supply passage 21 and the stop of the inflow of water. The shutoff valve 24 can be a manually operated valve.
The input device 25 can be provided, for example, inside the water faucet 20. The input device 25 can be provided, for example, in the vicinity of the water outlet 20b. The input device 25 detects an object such as the user's hand 101, for example.

The soap water discharge unit 3 has a discharge plug 30, a supply path 31, a pump 32, a soap water tank 33, and an input device 34.
The discharge plug 30 can be provided, for example, on the wall surface of the bowl portion 100 a of the wash basin 100. The discharge plug 30 can be provided, for example, in the vicinity of the opening of the bowl portion 100a. The supply path 31, the pump 32, and the soap water tank 33 can be provided, for example, inside the wash basin 100. Inside the discharge plug 30, a nozzle 30a is provided. One end of the nozzle 30 a is open at the end face of the discharge plug 30. The other end of the nozzle 30 a is connected to the pump 32 via the supply passage 31. The pump 32 supplies soap water contained in the soap water tank 33 to the nozzle 30 a and stops the supply. The soap water tank 33 stores soap water in a space provided inside.
The input device 34 can be provided, for example, inside the discharge plug 30. The input device 34 can be provided, for example, in the vicinity of the opening of the nozzle 30a. The input device 34 detects an object such as the user's hand 101, for example.

The drying unit 4 has a main body 40, an air duct 41, a fan and heater unit 42, and an input device 43.
The main body 40 can be embedded, for example, on the wall surface of the bowl 100 a of the wash basin 100. The main body portion 40 can be provided, for example, in the vicinity of the opening of the bowl portion 100 a. The air duct 41 and the fan and heater unit 42 can be provided, for example, inside the wash basin 100. Inside the main body 40, an air duct 40a is provided. One end of the air duct 40 a is open at the end face of the main body 40. The other end of the air duct 40 a is connected to the fan and heater unit 42 via the air duct 41. The fan and heater unit 42 supplies hot air of a desired temperature to the air duct 40 a and stops the supply. The fan and heater unit 42 has a fan 42 a and a heater 42 b. The fan 42a sucks the outside air and supplies it to the air duct 40a. The heater 42 b heats the air supplied from the fan 42 a.
The input device 43 can be provided inside the main body 40, for example. The input device 43 can be provided, for example, in the vicinity of the opening of the air duct 40a. The input device 43 detects an object such as the user's hand 101, for example.

  The input devices 25, 34, 43 may include, for example, sensors such as photoelectric sensors, electrostatic sensors, ultrasonic sensors, and proximity sensors. However, the sensor is not limited to the illustrated one as long as it can detect an object such as the hand 101 of the user. The input devices 25, 34 and 43 each include a control unit such as a microcomputer, perform detection processing based on a write signal described later, save the result of the detection processing, and save based on a read signal described later. The result of the detection process is sent to the control device 5.

  The control device 5 includes a microcomputer and the like, and controls the operation of the solenoid valve 22 based on the result of the detection process from the input device 25. The control device 5 controls the operation of the pump 32 based on the result of the detection process from the input device 34. The control device 5 controls the operation of the fan 42 a and the heater 42 b based on the result of the detection process from the input device 43. In the present embodiment, the solenoid valve 22, the pump 32, the fan 42a, and the heater 42b are devices controlled by the control device 5 based on the result of the detection process from the input devices 25, 34, 43.

Next, control by the control device 5 will be further described.
FIG. 2 is a block diagram illustrating a watercraft apparatus according to the embodiment.
In FIG. 2, the power supply line and the ground line are omitted in order to avoid complication.
As shown in FIG. 2, the control system of the water circulation apparatus 1 can be a master / slave system.
The control device 5 is a master 15 which controls the system.

  The input devices 25, 34, 43 become slaves 12, 13, 14 controlled by the master 15. In this case, the slaves 12, 13, 14 perform detection processing of an object such as the hand 101 of the user. In the master / slave system, one master and at least one slave can be connected in the form of a party line by two lines of a clock supply line SCL and a data transmission line SDA. For example, in the case illustrated in FIG. 2, one master 15 and three slaves 12, 13 and 14 are connected by one clock supply line SCL and one data transmission line SDA. be able to. If the master / slave system is used, the number of wires can be significantly reduced as compared to the case where the control device 5 and the input devices 25, 34, 43 are wired individually. Therefore, the number of wiring steps can be reduced, and the resistance to disturbance noise can be improved. In addition, it is possible to use a small master 15 with a small number of communication ports.

  In the case of the master / slave system, the master controls a desired device while communicating with the master and the plurality of slaves. For example, in the case illustrated in FIG. 2, while the master 15 and the slaves 12, 13, 14 communicate with each other, the master 15 includes the solenoid valve 22, the pump 32, the fan 42a, and the heater 42b. Control the operation.

  Communication in the master / slave system may be clock synchronous communication or clock asynchronous communication. However, in the case of clock asynchronous communication, erroneous data may be acquired when the variation of the slave oscillator is large. Therefore, it is preferable that communication between the master 15 and the slaves 12, 13 and 14 be clock synchronous communication.

  An example of clock synchronous communication is I2C. Therefore, in the following, as an example, the case where communication between the master 15 and the slaves 12, 13, 14 is performed by the I2C method is exemplified.

  An individual slave address is assigned to each of the plurality of slaves 12, 13, 14. That is, a slave address for identifying the slave 12 is assigned to the slave 12, a slave address for identifying the slave 13 is assigned to the slave 13, and the slave 14 is assigned to the slave 14. A slave address for identification is given. Each slave has a memory (such as a flash memory), and stores information on the slave address assigned to it. The master 15 also has a memory (flash memory or the like) and stores slave addresses assigned to the slaves.

  Here, the slaves 12, 13, 14 are connected to one clock supply line SCL and one data transmission line SDA. Further, the master 15 sequentially transmits the write signals W1 to W3 and the read signals R1 to R3 related to the slaves 12, 13 and 14, respectively.

  The write signal W1 includes a slave address for identifying the slave 12 and an instruction for causing the slave 12 to execute detection processing. The write signal W2 includes a slave address for identifying the slave 13 and an instruction for causing the slave 13 to execute detection processing. The write signal W3 includes a slave address for identifying the slave 14 and an instruction for causing the slave 14 to execute detection processing. For example, when each slave has a photoelectric sensor, the detection process is the execution of light projection and the temporary storage of the detection result (for example, the presence or absence of an object such as the hand 101).

  The read signal R1 includes a slave address for identifying the slave 12 and a command for requesting transmission of the result of the detection processing stored in the slave 12. The read signal R2 includes a slave address for specifying the slave 13 and a command for requesting transmission of the result of the detection processing stored in the slave 13. The read signal R3 includes a slave address for identifying the slave 14 and a command for requesting transmission of the result of the detection processing stored in the slave 14.

  The slave 12 starts the detection process when the write signal W1 is received, and transmits the stored detection result to the master 15 when the read signal R1 is received after the end of the detection process. The slave 13 starts the detection process when the write signal W2 is received, and transmits the stored detection result to the master 15 when the read signal R2 is received after the end of the detection process. The slave 14 starts the detection process when the write signal W3 is received, and transmits the stored detection result to the master 15 when the read signal R3 is received after the end of the detection process.

  The master 15 opens the electromagnetic valve 22 when an object is detected by the slave 12 (that is, when the detection result is “object present”). Thus, water discharge from the water discharge port 20b is started. The master 15 closes the solenoid valve 22 when an object is not detected by the slave 12 (ie, when the detection result is “no object”). Thereby, the water discharge from the water discharge port 20b stops.

  The master 15 operates the pump 32 when an object is detected by the slave 13. Thereby, soap water is supplied to the nozzle 30a. The master 15 stops the pump 32 when an object is not detected by the slave 13. Thereby, the supply of soap water to the nozzle 30a is stopped.

  The master 15 operates the fan 42 a and the heater 42 b when an object is detected by the slave 14. Thus, the warm air is supplied to the air duct 40a. The master 15 stops the fan 42 a and the heater 42 b when the slave 14 detects no object. Thereby, the supply of the warm air to the air duct 40a is stopped.

  FIG. 3 is a flowchart illustrating the operation of the master of the watercraft device according to the embodiment. As shown in FIG. 3, the master 15 has a slave address erase mode (SA erase mode), an automatic slave address determination mode (automatic SA determination mode), and a normal mode. In the specification and drawings of the present application, the slave address may be described as "SA".

  For example, START in FIG. 3 is power on to the master 15. When the power is turned on, the master 15 executes the SA erase mode (step S1). The SA erase mode is a reset mode for resetting a slave address assigned to each of a plurality of slaves. By this reset, the information of the slave address stored in the master 15 and each slave is erased.

  Thereafter, the master 15 executes the automatic SA determination mode (step S2). The automatic SA determination mode automatically determines the slave address of each slave. Thus, the slave address is assigned to each slave.

  Thereafter, the master 15 repeatedly executes the normal mode (step S3). In the normal mode, for example, the master 15 controls a desired device while communicating with a plurality of slaves by transmitting the read signal and the write signal described above.

FIG. 4 is a flowchart illustrating the operation of the slave of the watercraft device according to the embodiment.
FIG. 4 shows the operation of one of the plurality of slaves 12, 13, 14 communicating with the master 15. As shown in FIG. 4, the slave has a slave address assignment mode (SA assignment mode) and a normal mode.

  For example, START in FIG. 4 is power on to the slave. When the power is turned on, the slave executes the SA provision mode (step S4). The SA application mode is an operation mode of the slave when the master 15 executes the automatic SA determination mode.

  Thereafter, the slave repeatedly executes the normal mode (step S5). The normal mode is an operation mode of the slave when the master 15 executes the normal mode.

Drawing 5 (a)-Drawing 5 (c) are timing charts which illustrate operation of a plumbing device concerning an embodiment.
FIG. 5A exemplifies the operation of the master 15 in the automatic SA determination mode. FIGS. 5B and 5C illustrate the operation of the slave corresponding to the automatic SA determination mode of the master 15. Specifically, FIG. 5 (b) illustrates the operation of the slave 12 in the SA application mode, and FIG. 5 (c) illustrates the operation of the slave 13 in the SA application mode. Note that the slave 14 is omitted for the sake of simplicity. Further, at time T0 when the automatic SA determination mode and the SA application mode start, the slave address is not assigned to the slaves 12 and 13 (the slave address has an initial value).

  As shown in FIG. 5A, in the automatic SA determination mode, the master 15 transmits a search signal to a plurality of slaves a plurality of times. In the example of FIG. 5A, the master 15 transmits the search signal at times T1, T2, and T5. The search signal is a signal for searching for a slave whose slave address has not been determined (is not assigned). Specifically, the search signal is a signal for instructing a slave to which a slave address is not assigned to return.

  In this example, each slave randomly determines whether to reply to the probe signal. For example, as shown in FIG. 5B and FIG. 5C, the slaves 12 and 13 do not reply to the search signal transmitted at time T1. At time T3, the slave 12 sends a reply to the master 15 in response to the search signal transmitted at time T2. On the other hand, the slave 13 does not reply to the search signal transmitted at time T2.

  When the master 15 receives a reply to the search signal from the slave, it determines the slave address of the slave that has sent the reply, and transmits a decision signal to the slave that has sent the reply. For example, as shown in FIG. 5A, at time T4, the master 15 transmits a determination signal to the slave 12, and the slave 12 receives the determination signal. As a result, the slave address is assigned to the slave 12 that has replied in response to the search signal.

  Thereafter, the master 15 transmits the search signal again at time T5. As shown in FIG. 5B, the slave 12 whose slave address has already been determined does not reply to the search signal even if the search signal is transmitted. As shown in FIG. 5C, at time T6, the slave 13 sends back to the master 15 the search signal transmitted at time T5. Thereafter, at time T7, the master 15 transmits a determination signal to the slave 13, and the slave 13 receives the determination signal. As a result, the slave address is assigned to the slave 13 that has replied in response to the search signal.

  Thus, the master 15 transmits the search signal a plurality of times, and ends the automatic SA determination mode when the slave addresses are assigned to all of the plurality of slaves. In other words, when the master 15 determines that all of the plurality of slaves have returned in response to the search signal, it ends the automatic SA determination mode.

For example, when the master 15 transmits a predetermined number of determination signals and assigns a predetermined number of slave addresses, it determines that all of the plurality of slaves have returned in response to the search signal. In this case, for example, the number of slave addresses assigned by the master 15, that is, the number of slaves connected to the water circulation apparatus 1 is set in advance. The master 15 can determine whether a slave address has been assigned to all of the plurality of slaves by referring to data in a flash memory described later.
Alternatively, as will be described later, the master 15 may determine that all of the plurality of slaves have replied to the search signal based on the number of transmissions of the search signal. That is, the master 15 may consider that all of the plurality of slaves have sent back the search signal when the number of transmissions of the search signal reaches a predetermined number. The predetermined number of times is appropriately determined based on the number of slaves connected to the laundering device 1 and the frequency (probability) that each slave responds to the search signal.

  Thereafter, the master 15 and each slave execute the normal mode. For example, the master 15 transmits a normal signal (the above-described read signal or write signal) at times T8 and T9 to perform mutual communication with each slave.

When a plurality of slaves (sensors) are used in a water bath apparatus, a method of a comparative example is also conceivable in which each slave is given an individual slave address in advance. However, in this case, since the slaves are managed for each slave address, the management cost may increase. For example, it is necessary to provide a product number to distinguish between sensors of the same specification, which differ only in slave address.
On the other hand, a method of another comparative example in which a communication line switching circuit for switching the communication line between the master and the slave as appropriate is also conceivable. In this case, since the communication line switching circuit appropriately switches the slaves communicating with the master, a common slave address can be assigned to a plurality of slaves. Therefore, the part number management of the slave corresponding to the slave address can be eliminated. However, the manufacturing cost and the construction cost for providing the communication line switching circuit increase. In addition, there is a risk that the size of the water-supplying device may be increased.

On the other hand, in the embodiment, the master 15 transmits the search signal to each of the plurality of slaves, and determines an automatic SA determination mode for determining the slave address of the slave that has sent back the search signal among the plurality of slaves. Have. Since the slave address is automatically assigned to each slave in the automatic SA determination mode, the part number management of the slave corresponding to the slave address and the communication line switching circuit become unnecessary. Thereby, the increase in the cost in management, manufacture, or construction of plumbing equipment can be suppressed.
For example, in the embodiment, each slave may be previously assigned a slave address as a common initial value. Thereafter, each slave can be automatically assigned an individual slave address by the automatic SA determination mode.

  Also, when two or more slaves simultaneously reply to the search signal of the master 15, the slave address can be assigned, for example, when the master 15 can not determine to which slave among the returned slaves the slave address should be assigned. There is a risk that it will not run correctly. On the other hand, as described above, each of the plurality of slaves randomly responds to the search signal from the master 15. In other words, a slave to which a slave address is not assigned may or may not reply when it receives a search signal. This can suppress two or more slaves from replying at the same time. Although the frequency (probability) that the slaves reply to the search signal is arbitrary, it can be determined as appropriate in consideration of the number of slaves connected to the watercraft device 1.

  Also, for example, each slave returns a signal to which an error detection code is added to the search signal. The error detection code is configured such that an error (NG) is detected when the master 15 simultaneously receives two or more replies. For example, a checksum is used for the error detection code. That is, for example, a random redundant bit whose sum is a predetermined value is added to the reply from each slave. If the sum of redundant bits received by the master 15 is not a predetermined value, an error is detected. Therefore, even if two or more slaves reply to the search signal at the same time, the master 15 can detect that two or more slaves reply by the error detection code. This can prevent the assignment of the slave address from being performed correctly. The error detection code is not limited to the checksum, and any method that allows the master 15 to detect that two or more slaves have sent back may be used.

Also, the master 15 executes the automatic SA determination mode until it is determined that all of the plurality of slaves have not returned in response to the search signal. In other words, the master 15 repeatedly transmits the search signal until it determines that all the plurality of slaves have not returned in response to the search signal. For example, the master 15 can determine that all of the plurality of slaves have not returned a response to the search signal if the response from the slave to the search signal is not continuous for a predetermined number of times. Alternatively, as described above, even if the master 15 determines that all of the plurality of slaves have not returned to the search signal based on the number of assigned slave addresses or the number of transmitted search signals. Good.
Even if the slaves respond randomly to the search signal, all the slaves can be determined more reliably by executing the automatic SA determination mode until the master 15 determines that all the slaves have not returned a response to the search signal. The slave address of the slave can be determined.

The automatic SA determination mode and the SA application mode will be further described.
FIG. 6 is a flowchart illustrating an automatic slave address determination mode of the watercraft device according to the embodiment.
In the automatic SA determination mode, the master 15 starts measurement of time by the timer TM2 (step S101). The timer TM2 can detect that the slave connected to the watercraft device 1 is not connected. Specifically, as described later, the measurement of the time by the timer TM2 is restarted when there is a reply from the slave to the master 15. If there is no reply from the slave and the timer TM2 counts a predetermined time, it can be determined that the slave is not connected. For example, it is also possible to detect that a slave connected to the water supply device 1 has been removed for replacement due to a failure or the like.

After step S101, the master 15 determines whether assignment of slave addresses to a plurality of slaves has been completed (step S102). For example, the master 15 refers to a flash memory that the master 15 has.
FIGS. 8A and 8B are conceptual diagrams illustrating a flash memory.
FIG. 8A exemplifies the flash memory of the master 15. For example, data indicating that the assignment of the slave address is completed is written to the addresses 0101 h, 0102 h, and 0103 h of the flash memory.
For example, when the slave address is not assigned to the slave 12, the address 0101h has the initial value 00h, and when the slave address is assigned to the slave 12, the FFh is written to the address 0101h and the slave assigned to the slave 12 Address data (SA1 assigned data) is stored.
Similarly, when the slave address is not assigned to the slave 13, the address 0102h has the initial value 00h, and when the slave address is assigned to the slave 13, FFh is written to the address 0102h and assigned to the slave 13. The data of the slave address (SA2 assigned data) is stored.
When the slave address is not assigned to the slave 14, the address 0103h has an initial value 00h, and when the slave address is assigned to the slave 14, FFh is written to the address 0103h, and the slave address of the slave address is assigned. Data (SA3 assigned data) is stored.
By referring to data in such a memory, it is possible to determine the presence or absence of a slave to which a slave address is not assigned. The number of slaves connected is, for example, preset.

  Returning to FIG. 6, the description will be continued. If assignment of slave addresses to a plurality of slaves has been completed (step S102: Yes), that is, if it is determined that there is no slave to which no slave address has been assigned, the automatic SA determination mode ends.

  If assignment of slave addresses to a plurality of slaves has not been completed (step S102: No), that is, if it is determined that there is a slave to which no slave address has been assigned, the master 15 measures time by the timer TM1. It starts (step S103). The timer TM1 is a timer that measures the time when the automatic SA determination mode is executed. If the timer TM1 has counted a predetermined time (step S104: Yes), the automatic SA determination mode ends.

  If the count of the timer TM1 does not reach the predetermined time (step S104: No) and the timer TM2 counts the predetermined time (step S105: Yes), it is estimated that there is an unconnected slave in the water routing device 1 Be done. In this case, the master 15 stores data indicating that the execution of the SA erase mode is determined in the flash memory (step S106), and enters the standby state. Thereafter, for example, when the installer turns off the power and connects the slave to the water circulation apparatus 1 and then turns on the power again, the data in the flash memory is referred to and the SA erase mode is executed. As described with reference to FIG. 3, after the slave address is once reset by the SA erase mode, the automatic SA determination mode is executed again, and the slave address can be assigned to each slave. Note that after step S106, the master 15 may execute the SA erasing mode without waiting for the power to be turned on without entering the standby state.

  If the count of the timer TM2 has not reached the predetermined time (step S105: No), the master 15 transmits a search signal to each slave (step S107). The search signal includes, for example, an initial value SA0 of the slave address. The slave that has received the search signal transmits an acknowledgment signal ACK to the master 15.

  If there is no reception confirmation signal ACK from the slave (step S108: No), the master 15 proceeds to steps S115 and S116 without executing steps S109 to S114 described later. When the master 15 receives the reception confirmation signal ACK (step S108: Yes), measurement of time by the timer TM2 is restarted (step S109).

  Also, a slave to which a slave address is not assigned, that is, a slave whose slave address has an initial value SA0 returns a reply to the search signal. The master 15 receives the reply (step S110).

  When an error in the error detection code (checksum) is not detected in response to the search signal from the slave (step S111: OK), the master 15 transmits a determination signal to the slave that has sent the response (step S112). Thereby, a slave address is assigned to the slave that has returned in response to the search signal. Further, as described with reference to FIG. 8A, the master 15 records data of the assigned slave address in the flash memory (step S113). After that, the master 15 causes the slave to which the slave address is assigned to transmit the slave address, and confirms that the slave address is assigned (step S114).

Thereafter, the master 15 counts the number of times the search signal is transmitted (the number of integrations) (step S115), and when the number of times the search signal is transmitted is less than the predetermined number (step S116: No), repeats steps S104 to S115 again. . If the number of times of transmission of the search signal is a predetermined number (step S116: Yes), the automatic SA determination mode ends.
Further, even when an error of the error detection code is detected in step S111 (step S111: NG), steps S115 and S116 are executed.

  In addition, when the master 15 transmits a determination signal and the slave address is determined, it may be notified by sound or light that the slave address has been determined. For example, the water supply device 1 is provided with notification means such as a light emitting unit (such as an LED) or a speaker, and the master 15 controls the notification means when the slave address is determined, and the slave address is determined for the builder To inform

FIG. 7 is a flowchart illustrating the slave address assignment mode of the watercraft device according to the embodiment.
FIG. 7 shows an operation of one of the plurality of slaves 12, 13, 14 communicating with the master 15. In the SA application mode, the slave refers to its own flash memory and determines whether or not the slave address has been stored, that is, whether the slave address has been allocated (step S201).

  FIG. 8B illustrates a flash memory that the slave has. For example, when a slave address is not assigned, the initial value 00h is the address 0200h, and when the slave address is assigned, data (assigned SA) of the slave address assigned to the address 0200h is stored.

  Returning to FIG. 7, the description will be continued. If the slave address is assigned to the slave (step S201: Yes), the SA assignment mode ends. When the slave address is not assigned to the slave (step S201: No), when the slave receives the search signal from the master 15 (step S202: Yes), the slave randomly determines whether to reply (step S203). .

  When the slave does not reply to the search signal (step S203: No), steps S202 and S203 are repeated. When the slave returns a response to the search signal (step S203: Yes), the slave returns a signal to which an error detection code is added (step S204).

  Thereafter, the slave waits for the master 15 to receive a reply and transmit a decision signal (step S205). When the slave receives the determination signal from the master 15 (step S206: Yes), the slave address assigned is stored in the flash memory as described with reference to FIG. 8B (step S207). When the slave has not received the determination signal from the master 15 (step S206: No), it repeats steps S202 to S206.

Fig.9 (a)-FIG.9 (d) are the timing charts which illustrate operation | movement of the water-surroundings apparatus which concerns on embodiment.
FIG. 9A illustrates the operation of the master 15 in the automatic SA determination mode and the normal mode. FIGS. 9B to 9D illustrate the operation in the SA application mode and the normal mode of the slaves 12, 13 and 14, respectively. The automatic SA determination mode and the SA application mode are the same as those described in FIG.

  After transmitting the search signal a predetermined number of times, the master 15 ends the automatic SA determination mode and shifts to the normal mode. For example, as shown in FIG. 9A, the master 15 transmits a normal signal at times T8, T9, and T14 after the end of the automatic SA determination mode, and performs mutual communication with each slave.

  For example, when the slaves return a random response to the search signal and the master 15 ends the automatic SA determination mode based on the number of transmissions of the search signal, before all slaves are assigned slave addresses with low probability. The automatic SA determination mode may end.

  In addition, for example, once the automatic SA determination mode ends, there is also a possibility that a new slave is connected to the plumbing device 1. In this case, a slave address is not assigned to the newly connected slave, that is, the slave address is an initial value.

  Therefore, in the example shown in FIG. 9, it is assumed that the slave address is assigned to the slaves 12 and 13 and the slave address is not assigned to the slave 14 in the automatic SA determination mode. That is, at the start of the normal mode after the automatic SA determination mode, the slave address is not assigned to the slave 14.

  In this example, the master 15 transmits the probe signal to the plurality of slaves even after determining that all the plurality of slaves have not returned in response to the probe signal and ending the automatic slave address determination mode. For example, as shown in FIG. 9A, the master 15 transmits a search signal also at time T10 after time T8 and at time T11 after time T9. The slaves 12 and 13 to which slave addresses have already been assigned do not respond to this search signal. On the other hand, the slave 14 to which the slave address is not assigned randomly determines whether or not to reply to the search signal. As shown in FIG. 9D, the slave 14 does not reply to the probe signal transmitted at time T10, but replies at time T12 to the probe signal transmitted at time T11.

  When the master 15 receives the reply from the slave 14, the master 15 transmits a determination signal to the slave 14 at time T13, and the slave 14 receives the determination signal. Thus, the slave address is assigned to the slave 14.

  As described above, even after the end of the automatic slave address determination mode, the master can continuously determine the slave addresses of all slaves by transmitting the search signal continuously. For example, a slave address can be assigned to a newly connected slave after the end of the automatic SA determination mode.

Drawing 10 (a)-Drawing 10 (c) are timing charts which illustrate operation of a plumbing device concerning an embodiment.
FIG. 10A illustrates the operation of the master 15 in the automatic SA determination mode and the normal mode. FIGS. 10B and 10C illustrate the operation of the slaves 13 and 14 in the SA application mode and the normal mode, respectively. The automatic SA determination mode and the SA application mode are the same as those described in FIG.
After transmitting the search signal a predetermined number of times, the master 15 ends the automatic SA determination mode and shifts to the normal mode. For example, as shown in FIG. 10A, the master 15 transmits a normal signal at times T8, T9, T14, T15, T16, and T17 after the end of the automatic SA determination mode, and performs mutual communication with each slave. Do.

  Also in this example, as in the example of FIG. 9, the master 15 transmits the search signal in the normal mode after the automatic SA determination mode. For example, as shown in FIG. 10A, the master 15 transmits a search signal at time T18 after time T15. The slave 14 responds to the search signal transmitted at time T18 at time T19. When the master 15 receives the reply from the slave 14, the master 15 transmits a determination signal to the slave 14 at time T20, and the slave 14 receives the determination signal. Thus, the slave address is assigned to the slave 14.

  For example, in the example of FIG. 9, the frequency at which the master 15 transmits a search signal after the end of the automatic SA determination mode (the number of transmissions per unit time) transmits the search signal during execution of the automatic SA determination mode. It is the same as the frequency. For example, in the example of FIG. 9, the master 15 transmits the search signal each time it transmits a normal signal in the normal mode. However, even after the end of the automatic slave address determination mode, if the master 15 continues to transmit the search signal frequently, the processing load on the master 15 is large.

  On the other hand, in the example of FIG. 10, the frequency at which the master 15 transmits the search signal after the termination of the automatic SA determination mode is lower than the frequency at which the master 15 transmits the search signal during execution of the automatic SA determination mode. For example, in the example of FIG. 10, when the master 15 transmits the normal signal a plurality of times in the normal mode, the master 15 transmits the search signal once.

  Thus, after the end of the automatic slave address determination mode, the slave address can be assigned to all the slaves including the slave newly connected to the watercraft 1 by reducing the transmission frequency of the search signal. In addition, the processing load of the master 15 can be reduced.

The normal mode of the master 15 will be further described.
FIG. 11 is a flowchart illustrating the normal mode of the master of the watercraft according to the embodiment.
In the normal mode, the master 15 measures time by the timer TM2. The timer TM2 is similar to the timer TM2 described with reference to FIG. 6, and measures the time when the slave is not connected. If the timer TM2 has counted a predetermined time (step S301: Yes), the master 15 stores data indicating that the execution of the SA erase mode is determined in the flash memory (step S302), and enters the standby state. Thereafter, when the power is turned on again, the master 15 executes the SA erasing mode. Alternatively, the master 15 may execute the SA erase mode without waiting for power on again.

  If the count of the timer TM2 has not reached the predetermined time (step S301: No), the master 15 transmits a normal signal (the above-described read signal or write signal) to each slave (step S303). This normal signal includes the individual slave address determined by the automatic SA determination mode. Each slave transmits an acknowledgment signal ACK to the master 15 when it receives a normal signal including the slave address assigned to itself.

  If there is no reception confirmation signal ACK for the normal signal including the slave address, it can be determined that an abnormality such as a failure has occurred in the slave to which the slave address is assigned. Therefore, when there is no reception confirmation signal ACK for the normal signal (step S304: No), the master 15 erases the slave address included in the normal signal from the flash memory (step S305). Note that step S305 may be executed when a plurality of consecutive reception confirmation signals are not obtained. Thereby, the influence of noise can be suppressed.

  When the master 15 receives the reception confirmation signal ACK (step S304: Yes), measurement of time by the timer TM2 is restarted (step S306). Then, the master 15 appropriately controls the solenoid valve 22, the pump 32, the fan 42a, the heater 42b, and the like based on the result of the detection process from each slave (step S307).

  Thereafter, the master 15 counts the number of times the normal signal has been transmitted (the number of integrations) (step S308). If the number of times the normal signal has been transmitted is less than the predetermined value (step S309: No), the normal mode ends. If the number of times the normal signal has been transmitted reaches a predetermined value (step S309: Yes), the count of the normal signal is cleared, that is, reset to zero (step S310), and steps S311 to S318 are performed. Steps S311 to S318 are similar to steps S107 to S114 described with reference to FIG.

  The frequency at which steps S311 to S319 are performed is adjusted by the predetermined value in step S309. In other words, the predetermined value adjusts the frequency at which the search signal is transmitted in the normal mode. For example, when the predetermined value is 1, a search signal is transmitted each time a normal signal is transmitted. When the predetermined value is 2, the master 15 transmits the search signal once when the normal signal is transmitted twice.

  Also, in step S316, the master 15 assigns slave addresses in order from the slave address having the smallest number among the slave addresses assigned to the slaves.

  Further, in the above example, the same processing as a part of the automatic SA determination mode is executed in steps S311 to S318, but the master 15 may execute the automatic SA determination mode. In other words, the master 15 may execute the automatic slave address determination mode multiple times. Even when the slaves randomly reply to the search signal, the slave addresses of all slaves can be determined more reliably by executing the automatic slave address determination mode multiple times.

FIG. 12 is a flowchart illustrating a slave address erase mode of the watercraft device according to the embodiment.
In the SA erase mode, the master 15 ends the SA erase mode when data indicating that the execution of the SA erase mode has been decided is not stored in the flash memory (step S401: No).

  When data indicating that execution of the SA erase mode has been determined is stored in the flash memory (step S401: Yes), the master 15 prevents the slave address from being erased each time the master 15 is powered on. Therefore, first, data indicating that the execution of the SA deletion mode has been determined is deleted (step S402).

  After that, the master 15 transmits a slave address erase signal (SA erase signal) to the slave (step S403). The SA erase signal is a signal instructing the slave to erase the information of one slave address assigned by the master 15 from the flash memory of the slave.

  Thereafter, the master 15 switches the slave address at which the SA erase signal instructs the erase (step S404), and counts the number of times the SA erase signal is transmitted (the number of integrations) (step S405).

  When the number of times the SA cancellation signal has been transmitted is less than the predetermined number (step S406: No), steps S404 to S405 are repeated. When the number of times of transmission of the SA cancellation signal reaches a predetermined number, the SA cancellation mode ends. The predetermined number of times is the number of slave addresses assigned by the master 15 in the automatic SA determination mode. That is, the master 15 sequentially switches the slave address by repeating steps S404 to S405 a predetermined number of times, and transmits the SA erase signal regarding all of the assigned slave addresses. As a result, all slave addresses assigned by the automatic SA determination mode are erased, and the plurality of slaves are reset to the state where no slave address is assigned (the slave address is in the initial value state).

  Even if an incorrect slave address is assigned to the slave, the slave address is reset by the SA erase mode (reset mode). Thereafter, by executing the automatic SA determination mode, it is possible to give the slave a slave address again.

In this example, the SA erase signal for one slave address is transmitted once, but the SA erase signal for one slave address may be transmitted twice or more. This makes it possible to erase the slave address more reliably.
In addition, a switch (button) or the like may be provided for the user to cause the master 15 to execute the SA deletion mode. In this case, instead of step S401, it is determined whether the switch is pressed. When the switch is pressed, steps S402 to S406 are performed.

FIG. 13 is a flowchart illustrating the normal mode of the watercraft equipment slave according to the embodiment.
FIG. 13 shows an operation of one of the plurality of slaves 12, 13, 14 which communicate with the master 15.
In the normal mode, when the slave receives a normal signal from the master 15 (step S501: Yes), the slave executes processing based on the normal signal (step S502). For example, the slave executes detection processing based on the write signal, and transmits the result of the detection processing to the master 15 based on the read signal.

When the slave does not receive the normal signal from the master 15 (step S501: No) and receives the SA erase signal from the master 15 (step S503: Yes), it erases the information of the assigned slave address from the flash memory. (Step S504). After that, the slave is reset and shifts to the SA provision mode (step S505).
When the slave does not receive the normal signal from the master 15 (step S501: No) and also does not receive the SA erase signal (step S503: No), the slave does not shift to the detection process or the SA provision mode. , Normal mode ends.

  The above has described the case where the slave returns a random response to the search signal. However, the slave does not have to respond randomly to the search signal. An example of the slave SA provision mode in the case where the slave does not randomly reply to the search signal will be described with reference to FIG.

FIG. 14 is a flowchart illustrating a slave addressing mode of the watercraft apparatus according to the embodiment.
FIG. 14 shows one operation of the plurality of slaves 12, 13, 14 communicating with the master 15. In the SA application mode, the slave refers to its own flash memory and determines whether the slave address has already been stored, that is, whether the slave address has been allocated (step S601).

  If the slave address is assigned to the slave (step S601: Yes), the SA assignment mode ends. If the slave address is not assigned to the slave (step S601: No), the slave executes basic processing (step S602). This basic process is the same process as the process executed by the slave in step S502 in the normal mode, and in this example, is an object detection process by the sensor.

  Thereafter, when the slave receives the search signal from the master 15 (step S603: Yes), the slave determines whether the basic process of step S602 is active (step S604). In this example, active basic processing means that an object is detected. The slave repeats steps S602 and S603 when the basic process is not active (step S604: No), that is, when an object is not detected (when there is no object). When the basic process is active (step S604: Yes), that is, when an object is detected (when there is an object), the slave returns a signal to which an error detection code is added (step S605). Thereafter, the slave executes steps S606 to S608. Steps S605 to S608 are the same as steps S204 to S207 described with reference to FIG. 7, respectively.

  As described above, each of the plurality of slaves connected to the plumbing device 1 may determine whether to reply to the search signal based on the result of the detection process. This can suppress two or more slaves from replying at the same time. For example, the user can select a slave to reply to the search signal by, for example, holding the hand only on the slave to which the search signal is to be sent back and causing the object to be detected.

FIG. 15 is a block diagram illustrating a watercraft apparatus according to an embodiment.
The water circulation apparatus 1a according to the embodiment shown in FIG. 15 has an input device 25a, an input device 25b, a control device 5a, and an output device 22a.
For example, each of the input device 25a and the input device 25b is a sensor capable of detecting an object such as the hand of the user M. The output device 22a is, for example, an electromagnetic valve that performs start of spouting from the spout of the faucet device and stop of spouting. The output device may be another device such as a pump, a fan, a heater or the like.

  The control system of the laundering equipment 1a is a master / slave system, and the control device 5a becomes a master 15a that controls the control of the system. The input device 25a and the input device 25b are the slave 12a and the slave 12b controlled by the master 15a. The master 15a controls the operation of the output device 22a based on the results of detection processing from the slave 12a and the slave 12b.

  For example, when at least one of the two sensors (slave 12a and slave 12b) detects an object, the master 15a opens the solenoid valve (output device 22a). Thus, in the embodiment, the operation of one output device may be controlled based on the processing results of a plurality of slaves.

  In this case, the slave address given to the slave 12a and the slave address given to the slave 12b may be interchanged.

FIG. 16 is a block diagram illustrating a watercraft apparatus according to an embodiment.
The water circulation apparatus 1b according to the embodiment illustrated in FIG. 16 includes an input device 25c, an input device 25d, a control device 5b, an output device 22c, and an output device 22d.
For example, each of the input device 25c and the input device 25d is a sensor capable of detecting an object such as the hand of the user M. For example, the output device 22c and the output device 22d are electromagnetic valves that perform the start of water discharge from the water discharge port of the water faucet device and the stop of water discharge, respectively.

  The control system of the water supply apparatus 1b is a master / slave system, and the control device 5b becomes a master 15b in charge of controlling the system. The input device 25c and the input device 25d are the slave 12c and the slave 12d controlled by the master 15b.

  The configuration of the water circulation apparatus 1b corresponds to, for example, a configuration in which a plurality of faucet devices provided in series are controlled by one master 15b. That is, for example, the plumbing device 1 b includes the water faucet device 201 and the water faucet device 202. The faucet device 201 has a slave 12c and an output device 22c. The faucet device 202 is provided adjacent to the faucet device 201, and includes a faucet device 202 having a slave 12d and an output device 22d. The output device 22 c is an electromagnetic valve that controls water discharge / water stop in the faucet device 201, and the output device 22 b is an electromagnetic valve that controls water discharge / water stop in the water faucet device 202.

  The master 15a controls the operation of the output device 22c based on the result of the detection process from the slave 12c, and controls the operation of the output device 22d based on the result of the detection process from the slave 12d. In other words, the slave 12c and the output device 22c interlock with each other, and the slave 12d and the output device 22d interlock with each other.

  In order to interlock the slave 12c and the output device 22c, a slave address corresponding to the output device 22c is assigned to the slave 12c. Further, in order to interlock the slave 12d with the output device 22d, a slave address corresponding to the output device 22d is assigned to the slave 12d.

  The order of slave addresses to be assigned by the master 15b in the automatic SA determination mode is predetermined. For example, the master 15b assigns slave addresses in order from the slave address with the lowest number.

  For example, consider a case where the master 15b assigns slave addresses in the order of the slave address corresponding to the output device 22c and the slave address corresponding to the output device 22d. In this case, the builder causes the slave 12c to reply to the search signal from the master 15b, and then causes the slave 12d to reply to the search signal from the master 15b. For example, the slave 12c is connected to the water circulation apparatus 1b, and after the slave 12c returns a response to the search signal, the slave 12d is connected to the water circulation apparatus 1b. Alternatively, in the example described with reference to FIG. 14, the basic process of the slave 12c is activated, and after the slave 12c responds to the search signal, the basic process of the slave 12d is activated. As described above, the order of the slave addresses assigned by the master 15 b corresponds to the order in which the plurality of slaves respond to the search signal from the master 15 b. Thus, the slave address corresponding to the output device 22c can be assigned to the slave 12c, and the slave address corresponding to the output device 22d can be assigned to the slave 12d.

The embodiments have been illustrated above. However, the present invention is not limited to these descriptions.
Those skilled in the art can appropriately add, delete, or change design elements of the above-described embodiment, or can add, omit, or change the process of the components, to which the features of the present invention are also provided. As long as it is included in the scope of the present invention.
Moreover, each element with which each embodiment mentioned above is provided can be combined as much as possible, and what combined these is also included in the scope of the present invention as long as the feature of the present invention is included.

  DESCRIPTION OF SYMBOLS 1, 1a, 1b Water supply apparatus, 2 Water discharge part, 3 Soap water discharge part, 4 Drying part, 5, 5a, 5b Control apparatus, 12, 12a-12d, 13, 14 slave, 15, 15a, 15b Master, 20 Water faucet, 20a water flow passage, 20b spout, 21 water supply passage, 22 solenoid valve, 22a-22d output device, 23 constant flow valve, 24 water shutoff valve, 25, 25a-25d input device, 30 discharge plug, 30a nozzle, Reference Signs List 31 supply path, 32 pumps, 33 soapy water tanks, 34 input devices, 40 main units, 40a air ducts, 41 air ducts, 42 fans and heater units, 42a fans, 42b heaters, 43 input devices, 100 washbasins, 100a bowl portions , 101 hands, 201 water faucet device, 202 water faucet device, SDA data transmission line, R1-R3 read signal, SCL clock supply line, W1-W3 write signal,

Claims (4)

With multiple slaves,
A master that communicates with the plurality of slaves and controls the plurality of slaves;
A water rig equipped with
The master has an automatic slave address determination mode for transmitting a probe signal to each of the plurality of slaves and determining a slave address of the slave which has returned a reply to the probe signal among the plurality of slaves,
In the automatic slave address determination mode, the master transmits the search signal a plurality of times, and each of the plurality of slaves randomly determines whether or not to reply to each of the plurality of the search signals. And the automatic slave address determination mode is ended when the master determines that all of the plurality of slaves have returned in response to the search signal.   The watercraft device according to claim 1, wherein each of the plurality of slaves returns a signal to which an error detection code is added to the search signal.   Each of the plurality of slaves performs an object detection process, determines whether or not to reply to the search signal based on the result of the detection process, and when an object is detected, the search signal 2. A watercraft apparatus according to claim 1, wherein a signal to which an error detection code is added is returned. The watercraft device according to any one of claims 1 to 3 , wherein the master has a reset mode for resetting the slave address assigned to the slave.

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