JP2006112739A - Fan device control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fan control system improved in convenience, capable of collectively performing prohibition and release of ON/OFF operation of a fan device as occasion demands. <P>SOLUTION: An ON/OFF prohibiting operation terminal 4 includes an operation switch S0 for setting prohibition of ON/OFF operation of the fan device 5 in a fan control terminal 2 and release of the prohibition, has an address uniquely set thereto, and transmits operation data to a transfer unit 1 in a case that the operation switch S0 is operated. The transfer unit 1 alternately generates control data for instructing prohibition of ON/OFF operation of the fan device 5 and control data for instructing release of the prohibition to each fan control terminal 2 every time the operation data are received from the ON/OFF prohibiting operation terminal 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fan device control system for remotely controlling a fan device such as a ventilation fan or a fan coil device.

Many fan coil devices and ventilation fans, etc., are installed as air conditioning equipment in buildings, etc., but if each fan device is equipped with an operation switch for remote control, wiring becomes complicated, saving wiring There is provided a system that remotely controls the operation of a fan device by time division multiplex transmission that can perform the above (for example, Patent Document 1).
JP 11-325561 A

  By the way, the above fan device is regularly inspected by an electric maintenance company, or a building manager or a user may perform cleaning, but the person who does not know that it is being inspected or being cleaned. However, the operation switch is operated to turn on the fan device, which may interfere with inspection and cleaning work. On the contrary, there are cases where it is not desirable to turn off the fan device due to ventilation or air conditioning of the building or maintenance work, but a person who does not know the situation will operate the operation switch to turn off the fan device. There was a problem. In this case, it is not necessary to provide an operation switch, but a new problem arises that is troublesome during maintenance and cleaning.

  The present invention has been made in view of the above-described points, and an object of the present invention is to provide a fan control system capable of collectively prohibiting and releasing on / off of a plurality of fan devices as needed. It is to provide.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided at least an operation switch for operating on / off of the fan device, a unique address is set, and operation data corresponding to the operation of the operation switch is stored. A plurality of fan operation terminals that transmit through a signal line, and a plurality of fans that are set with unique addresses and that control on / off of the fan device based on control data sent to the address through the signal line A control terminal, connected to the fan operation terminal and the fan control terminal through the signal line, provided with a transmission / reception function for transmitting and receiving the operation data and the control data by multiplex transmission with each terminal; When the operation data sent from the fan operation terminal is received, control data corresponding to the operation data is generated and the operation data is A transmission unit that transmits to the address of the fan control terminal that has a corresponding relationship set to the fan operation terminal, and prohibits on / off the operation of the fan device in the fan control terminal And an on / off-inhibiting operation terminal for sending operation data to the transmission unit when the operation switch is operated, the operation unit having an operation switch for setting the release of the operation switch. Each time operation data is received from the off-prohibited operation terminal, the on / off control execution of the fan device in each fan control terminal associated with the on / off-prohibited operation terminal is prohibited. It has a processing function for performing processing for alternately setting the cancellation of the prohibition.

  According to the first aspect of the invention, it is necessary when the operation of the fan device is not desired to be turned on during maintenance or cleaning, or when the operation of the fan device is not desired to be turned off for the convenience of ventilation or air conditioning or maintenance work. Accordingly, the operation of a plurality of fan devices can be collectively prohibited by simply operating the operation switch of the on / off operation prohibition terminal.

  According to a second aspect of the present invention, in the first aspect of the invention, the processing function of the transmission unit is configured such that the on / off-prohibited operation terminal is provided every time operation data is received from the on / off-prohibited operation terminal. One of control data for instructing prohibition of on / off of the operation of the fan device and control data for instructing cancellation of the prohibition are alternately generated and transmitted to each fan control terminal previously associated with When the control data for instructing the prohibition of the on / off or the cancellation of the prohibition is sent to the self-address to the fan control terminal, the operation of the fan device is turned on / off. It is characterized by having a function of setting prohibition of execution of control when receiving corresponding control data or canceling the prohibition.

  According to the invention of claim 2, on / off operations of a plurality of fan devices can be collectively performed only by operating an operation switch of an on / off operation-prohibited terminal unit without changing signal lines. It is possible to provide a fan device control system that can be prohibited.

  According to a third aspect of the present invention, in the first aspect of the invention, the processing function of the transmission unit is preliminarily stored in an on / off prohibited operation terminal every time operation data is received from the on / off prohibited operation terminal. The control of turning on / off the operation of the fan device in each associated fan control terminal is alternately set to prohibit and cancel the prohibition, and the operation of the fan device is set in a state where the prohibition is set. When the operation data from the fan operation terminal corresponding to the on / off operation is received, the control data is not generated and transmitted by the operation data.

  According to the invention of claim 3, on / off operations of a plurality of fan devices can be collectively performed only by operating the operation switch of the on / off operation-prohibited terminal device without changing the signal lines. It is possible to provide a fan device control system that can be prohibited, and in particular, it can be realized only by improving the processing function of the transmission unit.

  The present invention can be turned on when necessary, such as when the operation of the fan device is not desired to be turned on during maintenance or cleaning, or when the operation of the fan device is not desired to be turned off for the convenience of ventilation or air conditioning. On / off of operation of a plurality of fan devices can be collectively prohibited by simply operating the operation switch of the terminal device.

Embodiments of the present invention will be described below.
(Embodiment 1)
As shown in FIG. 1, the system according to the present embodiment includes a transmission unit 1 serving as the center of the system, a plurality of fan control terminals 2 (2 ₁ , 2 ₂ ,..., 2 _n ), and each fan control terminal 2. A corresponding fan operation terminal 3 (3 ₁ , 3 ₂ ,..., 3 _n ), an on / off prohibition operation terminal 4, and a fan device such as a fan coil unit connected to each fan control terminal 2. 5 (5 ₁ , 5 ₂ ,..., 5 _n ) and, for example, a transformer 6 that steps down AC100V to 24V and supplies it to each fan control terminal 2 via the power supply line 9 as operating power. The terminals 2, 3 and 4 are connected to the transmission unit 1 via two signal lines 7 connected to the respective signal terminals, and exchange data with the transmission unit 1 by time division multiplex transmission signals. It is like that.

  This embodiment is different in terms of hardware in that the on / off prohibition operation terminal 4 is provided in the fan coil system disclosed in Patent Document 1 described above, but each component will be briefly described next. explain.

  The transmission unit 1 transmits a transmission signal Vs having a format as shown in FIGS. That is, the transmission signal Vs includes the start pulse ST indicating the start of signal transmission, the mode data MD indicating the signal mode, the address data AD, the control data CD, the checksum data CS for detecting a transmission error, the fan operation terminal 3 and the ON / OFF OFF-prohibited operation This is a time-division multiplexed signal (± 24V) consisting of long pulses for a signal return period WT for setting a return period of a reply data signal from the terminal device 4, and data is transmitted by pulse width modulation. It is like that.

  In each terminal 2, 3, 4, when the address data AD transmitted by the transmission signal Vs received via the signal line 7 matches the preset address (unique address), the transmission signal Vs is controlled. While taking in the data CD, the reply data is returned as a current mode signal (a signal transmitted by short-circuiting the signal lines 7 via an appropriate low impedance) in synchronization with the signal return period WT of the transmission signal Vs. .

  Further, the transmission unit 1 is provided with a dummy signal transmission unit and an interrupt processing unit, and the dummy signal transmission unit always transmits a dummy transmission signal with the mode data MD as a dummy mode. The interrupt processing means detects the fan operation terminal 3 or the on / off prohibition operation terminal 4 that has generated the interrupt signal Vi when the interrupt signal Vi as shown in FIG. The detected operation terminal is accessed, and the reply data is returned from the operation terminal that has generated the interrupt signal Vi. In other words, a dummy transmission signal is always transmitted to the signal line 7 by the dummy signal transmission means, and the interrupt signal Vi generated from the fan operation terminal 3 or the on / off prohibition operation terminal 4 in accordance with the operation of the operation switch described later. When detected in synchronization with the start pulse signal ST of the dummy transmission signal, the transmission unit 1 transmits the transmission signal Vs in which the mode data signal MD is set to the address confirmation mode to the signal line 7 by the interrupt processing means. The terminal that generated the interrupt signal Vi sets an interrupt flag for requesting an interrupt. After the setting, when the mode data signal MD receives the transmission signal Vs in the address confirmation mode, the terminal returns the signal return period WT of the transmission signal Vs. Synchronously, the data of the unique address set in the terminal and the operation data are returned as a reply data signal. In this way, the transmission unit 1 can acquire the address and operation data of the fan operation terminal 3 and the on / off prohibition operation terminal 4 that have generated the interrupt signal Vi.

  The transmission unit 1 generates control data CD based on the operation data returned from the fan operation terminal 3 that has generated the interrupt signal Vi, and the fan whose correspondence is set in advance in the fan operation terminal 3. A transmission signal Vs including the generated control data CD is transmitted to the address of the control terminal 3 via the signal line 7 to control the operation of the fan device 5 as a load connected to the corresponding fan control terminal 2. On the basis of the function to be performed and the operation data returned from the on / off prohibition operation terminal device 4, the control execution is prohibited or collectively prohibited for the on / off operation of the fan device 5 by the fan operation terminal device 3. It has a function of generating control data CD for giving a command for canceling the prohibition and sequentially transmitting it to each fan control terminal 2 by the transmission signal Vs.

Here, the fan operation terminal 3 used in the embodiment includes an operation switch unit 10 including _four operation switches S _{1 to} S ₄ to be described later, and has four types for the fan device 5 by the _four operation switches S _{1 to} S ₄ . The corresponding fan control terminal 3 performs the following four types of control on the operation of the fan device 5. Here, the correspondence between the operation of the operation switches S _{1 to} S ₄ and the control content is managed by the transmission unit 1.

Meanwhile ON / OFF prohibiting operation terminal 4 includes an operation unit 10 composed of operation switches S ₀ consisting of push button switches exposing the push button on the front, by the operation of the operation switch S _0, on to the fan unit 5 in the system / off control of prohibition and used to perform batch setting of cancellation of the prohibition, correspondence between the prohibition / prohibition cancellation and operation of the operation switch S ₀ is managed by the transmission unit 1.

  Here, the fan device 5 used in the present embodiment includes a fan F, a motor M for driving the fan, an electric valve V for controlling the flow of the refrigerant / heat medium to the heat exchange coil, and the like, and an AC power source such as a commercial power source. It operates by receiving power supply from AC, and it is possible to switch the air blowing capability (operation mode) in three stages of “strong”, “medium”, and “weak”. Is configured to receive one of the three driving outputs of “strong”, “medium”, and “weak” driving control and the driving output of the motor-operated valve V through the driving output line 9 when the operation is turned on. .

The operation contents of the operation switches S _{1 to} S ₄ of the fan operation terminal 3 are as follows. That is, the operation switch S ₁ is a switch for setting the operation mode of the corresponding fan device 5 to “strong”, the operation switch S ₂ is a switch for setting the operation mode to “medium”, and the operation switch S ₃ is the operation mode. The operation switch S ₄ is a switch for turning on / off the operation (power supply) of the fan device 5, and is composed of a push button switch, and each push button is placed on the front surface of the operation unit 10. It is exposed.

The fan operation terminal 3 the transmission unit 1 in response to the operation data of the content corresponding to the fan operation terminal 3 four operation switches S ₁ to S push button of the operation is sent reply data signal Then, the operation switch operated is determined from the content of the operation data, and based on the determination, it corresponds to any of “strong”, “medium”, “weak” and the on / off of the operation of the fan device 5 It has a processing function of generating the attached control data CD and transmitting it to the address of the fan control terminal 2 associated in advance with the transmission signal Vs.

The transmission unit 1 is associated in advance with operation data sent as a reply data signal in response to the operation of the push button of the operation switch S ₀ of the on / off prohibited operation terminal 4 (all in the embodiment). Control data CD for instructing prohibition of execution of on / off control of the operation of the fan device 5 in the fan control terminal 2 or release of the prohibition is generated, and this control data CD is sequentially transmitted to each fan control terminal 2. A processing function for transmitting a transmission signal Vs to an address of a setting function to be described later is provided.

  Each fan control terminal device 2 has a function for setting prohibition on the on / off control execution of the fan device 5 and the cancellation of the prohibition corresponding to the control data for prohibiting or canceling the prohibition and the setting function thereof. Has a unique address corresponding to.

Thus there the operation of the operation switch S ₄ in the fan operation terminal 3, the control data CD is generated to control the operation of the ON / OFF of the fan device 5 in the transmission unit 1 in response to this, the fan operation terminal 3 is transmitted by the transmission signal Vs to the fan control terminal 2 associated with 3, if the setting state of the setting function is “prohibited” in the fan control terminal 2 that has received the control data CD. If the control state based on the received control data CD is not executed, the current operation state of the fan device 5 is maintained, and if the set state is “inhibition release”, the operation of the fan device 5 is turned on or off according to the control data CD. Control to turn off is performed.

That the operation terminal 3 operating switch S ₄ by the fan unit 5 ON / OFF operation of the ON / OFF be disabled by operating the operation switches S ₀ prohibited operation terminal 4 also that it is also possible to release the inhibit state Become.

Here, as the case of collectively prohibiting the on / off operations for all the fan unit 5 by the on / off operation of the operation switch S ₀ prohibited operation terminal 4, electric maintenance provider to perform inspection of the fan unit 5 as described above If, and when hinder the inspection work on / off by operating the operation by carelessly operating the operation switch S ₄ of the fan operation terminal 3 a person who does not know that it is being inspected, the administrator when or user is cleaned off the operation of the fan unit 5, an operation switch S ₄ of the fan operation terminal 3 a person who does not know during cleaning corresponds to the fan unit 5 in inadvertently cleaned There is a case where it is difficult to turn off the operation of the fan device 5 for the convenience of air conditioning (ventilation in the case of a ventilation fan), etc., when it is desired to prevent the operation from being interrupted by operating and turning on. . The place where the on / off prohibited operation terminal 4 is installed is preferably a place where it cannot be operated carelessly.

  The circuit configuration of the fan operation terminal 3 (and the on / off prohibition operation terminal 4) is basically the same as that of the operation terminal shown in the above-mentioned Patent Document 1, but it can be simplified by FIG. explain.

As shown in FIG. 3, the fan operation terminal 3 (and the on / off prohibition operation terminal 4) includes a signal processing unit 30 made of a microcomputer or the like, and the signal processing unit 30 is connected to the signal line 7 via the transmission / reception circuit 31. Connected. The transmission / reception circuit 31 includes a reception function unit and a transmission function unit. The transmission function Vs (see FIG. 2) transmitted from the transmission unit 1 to the signal line 7 is received by the reception function unit, and the signal processing unit 30 receives the transmission signal Vs. input. On the other hand, the signal processing unit 30 can send back the data signal of the current mode signal to the transmission unit 1 through the transmission function unit (short-circuiting both lines of the signal line 7 through an appropriate low impedance). It is. Further, the signal processing unit 30 emits light for displaying the control state by the operation of the operation unit 10 including the operation switches S _{1 to} S ₄ (or S ₀ ) and the operation switches S _{1 to} S ₄ or S _0. Display elements LD ₁₁ , LD ₁₂ , LD ₂₁ , LD ₂₂ , LD ₃₁ , LD ₃₂ , LD ₄₁ , LD _42, or display circuit 32 including LD ₀₁ , LD ₀₂ from the outside, and addresses and addresses from the outside by, for example, wireless signals An address setting unit 33 for setting a load number (lower address) is connected. Further, by providing a power supply circuit 34 that rectifies a transmission signal Vs composed of a bipolar baseband signal that is always transmitted to the signal line 7 and obtains an operating power supply for the internal circuit, the wiring can be made only by the signal line 7 of a small force. We are going to save wires and improve workability.

On the other hand, the fan control terminal 2 has a pair of signal terminals N ₁ and N ₂ to which the signal line 7 from the transmission unit 1 is connected and a pair of power terminals T ₁ and T to which the power line 8 from the transformer 6 is connected. ₂ , a terminal T ₅ that is a common terminal to which one end of the AC power supply AC is connected, and terminals T _{3 to} T ₇ that are connected to the fan device 5 via a drive output line 9. Note terminal T ₆ is terminal for providing drive output to the electric valve V during the operation on the terminal T ₅ through T ₇ is the driving force of the motor M, that is, in giving each the motor M driving output corresponding to the blowing capacity during operation on terminal The terminal T ₅ corresponds to “weak” of the motor M, the terminal T ₆ corresponds to “medium” of the motor M, and the terminal T ₇ corresponds to “strong” of the motor M.

And the fan control terminal 2 is comprised from the circuit similar to the terminal unit for fan coil control in the patent document 1 mentioned above as shown in FIG. That is, a signal processing unit 20 made of a microcomputer or the like is provided, and the signal processing unit 20 is connected to the signal line 7 through signal terminals N ₁ and N ₂ via a transmission / reception circuit 21. The transmission / reception circuit 21 includes a reception function unit 21a including a transistor Q ₁ and a photocoupler PC ₁ and a transmission function unit 21b including transistors Q ₂ and Q ₃ , a resistor R _5, and a photocoupler PC ₂ . Therefore, the transmission signal Vs (see FIG. 2) transmitted from the transmission unit 1 to the signal line 7 is input to the signal processing unit 20 through the reception function unit 21a. On the other hand, from the signal processing unit 20, so that it can return the response data signal from the current mode to the transmission unit 1 is short-circuited via a resistor R ₅ between both lines of the signal line 7 by turning on the transistor Q ₃ It is. Here, the diode bridge DB ₁ is shared with the transmission function unit 21b. The reception state of the transmission signal Vs is indicated by blinking of the reception display light emitting diode LED ₂ connected to the signal processing unit 20.

The power supply to the signal processing unit 20 is performed by full-wave rectifying the AC 24V fed from the transformer 6 by the diode bridge DB ₂ and stabilized by the power supply circuit 22 including the transistor Q ₄ , the Zener diode ZD ₁ , the capacitor C _{2, and the} like. This is performed through a power supply circuit 23 including a transistor Q ₅ , a Zener diode ZD ₂ , a capacitor C _{3 and the} like.

The function data for setting the address of the fan control terminal 2 and the function of the signal processing unit 20 are stored in a data storage unit 24 including a nonvolatile memory such as an EEPROM. Data stored in the data storage unit 24 is created by processing a signal received by the optical signal receiving circuit 25 including the photodiode PD _{1 and the} like in the signal processing unit 20. Here, the signal received by the optical signal receiving circuit 25 is a wireless signal transmitted by an infrared ray or the like transmitted from an external address setter (not shown).

The fan control terminal 2 is provided with an optical signal transmission circuit 26 including a light emitting diode LED ₁ , a transistor Q _{6, and the} like. When a wireless signal is received from the address setting device, it is received according to the content of the signal. A response signal such as confirmation or setting confirmation is sent back to the address setter as a wireless signal. Here, the address setting unit sets an address and a load number.

  The signal processing unit 20 is also connected to a transmission circuit 43 that supplies a basic clock, a reset circuit 27 that resets the signal processing unit 20, and the like.

Furthermore the fan control terminal 2, the relay _{Ry 1, Ry 2, Ry 3} , Ry 4, Ry 5, Ry 6 for controlling the operation of the fan unit 2, for controlling the relays _Ry 1 to Ry ₆ And a relay control unit comprising transistors Q _{11 to} Q ₁₇ . Power is supplied to the relay control unit from the power supply circuit 22 described above. The relays Ry ₁ , Ry ₂ and Ry ₃ are two-winding latching relays. Note that the diodes D _{11 to} D ₁₃ in FIG. 4 are provided for countermeasures against external noise.

  Next, the operation of the fan device control system of this embodiment will be briefly described.

In fan operation terminal 3 in First, the operation when the push button of the operation switch S ₄ is operated. When the operation switch S ₁ of the push button is operated, after the interrupt signal Vi from the fan operation terminal 3 through the above-described interrupt processing is generated, that the operation switch S ₄ from the fan operation terminal 3 is operated When the operation data is received, the transmission unit 1 generates control data CD based on the received operation data, and the control data CD and the fan operation are transmitted. A transmission signal Vs including the address data AD of the fan control terminal 2 corresponding to the terminal 3 is transmitted to the signal line 7.

  When the signal processing unit 20 of the fan control terminal 2 receives the control data CD by the transmission signal Vs addressed to its own address, it is first determined whether the on / off control execution of the fan device 5 is prohibited. It is determined by checking whether the setting function setting flag is set (set) or not. It is assumed that the prohibited state is canceled at the initial start.

If it is determined that this case flag is set, the signal processing unit 20 checks the state of the relay Ry _4, when the relay Ry ₄ is de-energized state (off), before the relay Ry ₄ is turned off controls the relay _Ry 1 to Ry ₆ to return to the state of the relay _Ry 1 to Ry _6. For example, when the relay Ry ₄ was operating fan unit 5 is in blowing capacity of "weak" before being turned off, the signal processing unit 20 sends a control signal to the transistor Q ₁₁ of the relay control unit, the transistor Q By turning on ₁₁ , the set coil of the relay Ry ₁ is excited and its contact r ₁ is turned on. Then, to excite the relay Ry ₄ by turning on the transistor _{Q 17.} By this excitation, the contact r ₈ is turned on, the power is supplied to the motor M of the fan device 5 via the contact r ₆ , and the fan device 5 is operated with a “weak” air blowing capability.

  Then, a return data signal indicating control confirmation is returned from the fan control terminal 2 to the transmission unit 1 as a current mode signal. The transmission unit 1 receives this return data signal, confirms the operating state of the fan device 5, and generates control data CD for displaying the current load control state on the display circuit 32 of the corresponding fan operation terminal 3. Then, it transmits to the signal line 7 by the transmission signal Vs together with the address data AD of the fan operation terminal 3.

As a result, in the fan operation terminal 3, the display elements LD ₁₁ , LD ₁₂ , LD ₂₁ , LD ₂₂ , LD ₃₁ , LD ₃₂ , LD ₄₁ , LD ₄₂ are controlled by the signal processing unit 30, and the pushbutton switch S ₄ is controlled. The state before the power of the fan device 5 is turned off by the operation is restored.

On the other hand, in the confirmation of the relay Ry ₄ performed after determining that the flag of the setting function is not raised, when the excitation state (ON) is confirmed, the signal processing unit 20 determines all the relays Ry _{1 to} Ry. ₆ is turned off. For example, when the fan unit 5 is operating in a blowing capacity of "weak", the signal processing unit 20 sends a control signal to the transistor Q ₁₂ of the relay control unit, relay Ry ₁ by turning on the transistor Q ₁₂ reset coil is energized, the contact r ₁ is turned off. As a result, the signal processing unit 20 turns off the transistor Q ₁₇ and puts the relay Ry ₄ into the “de-energized” state, thereby turning off the contact r ₈ and shutting off the power supply to the F fan device 5.

A return data signal for control confirmation is returned from the fan control terminal 2 to the transmission unit 1 as a current mode signal. The transmission unit 1 receives this return data signal, confirms the operating state of the fan device 5, and displays the control data CD for displaying the current load control state on the display circuit 32 of the fan operation terminal 3 and the fan operation. A transmission signal Vs including the address data AD of the terminal device 3 is transmitted to the signal line 7. As a result, in the fan operation terminal 3, for example, green display elements LD ₁₁ , LD ₂₁ , LD ₃₁ , LD ₄₁ corresponding to the operation switches S ₁ , S ₂ , S ₃ , S ₄ are turned on.

By the way, when it is determined that the flag is raised by the determination of the flag of the setting function, that is, when the prohibition state is set, the signal processing unit 20 executes control on the fan device 5 based on the received control data CD. Without maintaining, the operating state of the fan device 5 is maintained as it is. That is invalidated on / off operation of the operation of the fan unit 5 by the operation switch S ₄ of the fan operation terminal 3.

Next, the operation when the operation switch S ₁ of the push button of the fan operation terminal 3 is operated. When the operation switch S ₁ of the push button is operated, an interrupt signal Vi from the fan operation terminal 3 is generated, after a interrupt processing, return data signal from the fan operation terminal 3 including the operation data of the operation switch S ₁ Is sent back to the transmission unit 1, and the transmission unit 1 generates the control data CD based on the received operation data and sends the transmission signal Vs including the address data AD and the control data CD of the corresponding fan control terminal 3 to the signal line 7. Send to. In the fan control terminal 2 that has received the control data CD, the signal processing unit 20 confirms the state of the relays Ry ₂ and Ry ₃ corresponding to “strong”, and when the relays Ry ₂ and Ry ₃ are off, The signal processing unit 20 sends a control signal to the transistors Q ₁₃ and Q ₁₅ of the relay control unit to turn on the transistors Q ₁₃ and Q ₁₅ , thereby energizing the set coils of the relays Ry ₂ and Ry ₃ , and the contacts of the relay Ry ₂ r _{2, r 3,} the contact _r 4, _{r 5} of the relay Ry ₃ is turned on, thereby energized relay _Ry 5, Ry ₆ is, contact _{r 6} of the relay Ry _5, the contact _{r 7} is normally closed relay Ry ₆ Switching from the (NC) side to the normally open (NO) side. As a result, power is supplied from the AC power supply AC to the motor M and the motor operated valve V of the fan device 5 so that the fan device 5 operates with a “strong” air blowing capability.

Thereafter, a return data signal for control confirmation is returned from the fan control terminal 2 to the transmission unit 1 as a current mode signal. The transmission unit 1 receives this return data signal, confirms the operating state of the fan device 5, and receives control data CD for displaying the current load control state on the display circuit 32 of the corresponding fan operation terminal 3. The included transmission signal Vs is transmitted to the signal line 7. As a result, the fan operation terminal green display element _{LD 11} corresponding to the operation switch _{S 1} in 3 is turned, and the other operation switches _{S 2,} S 3, red display element _{LD 22} respectively corresponding to _{S 4,} LD ₃₂ and LD ₄₂ are lit.

Furthermore, the operation of the case where the push button of the operation switch S ₂ is operated. When push button of the operation switch S ₂ is operated, the generated interrupt signal Vi from the fan operation terminal 3, the fan operation terminal 3 reply data (operations including content indicating that the second switch is operated Data) is sent back to the transmission unit 1, and when the transmission unit 1 receives the operation data, the transmission unit 1 generates control data based on the operation data and transmits a transmission signal Vs including the control data to the signal line Ls. Control data is transmitted to the control terminal 2. In the fan control terminal 2 that has received this control data, the signal processing unit 20 checks the state of the relay Ry ₃ corresponding to “medium”, and when the relay Ry ₃ is off, the signal processing unit 20 performs relay control. sends a control signal to the transistor Q13 parts, a set coil of the relay Ry ₃ is energized by turning on the transistor _{Q 13,} the contact _r 2, _{r 4} is turned on, the relay Ry ₅ is excited, the contact _{r 6} is turned on It becomes. As a result, power is supplied from the AC power supply AC to the motor M and the motor-operated valve V of the fan device 5 so that the fan device 5 operates with a “medium” blowing capacity. Thereafter, a return data signal for control confirmation is returned from the fan control terminal 2 to the transmission unit 1 as a current mode signal. The transmission unit 1 receives this control confirmation return data signal, confirms the operating state of the fan device 5, and displays control data for displaying the current load control state on the display circuit 32 of the corresponding fan operation terminal 3. The transmission signal Vs including the address data AD of the fan operation terminal 3 is transmitted to the signal line Ls. As a result, the red display element _{LD 12} to which the fan operation green display element _{LD 21} corresponding to the operation switch _{S 2} in the terminal device 3 is turned, and correspond to the other operating switches _{S 1,} S 3, _{S 4} , LD ₃₂ and LD ₄₂ are lit.

Next, the operation when the push button of the operation switch S ₃ is operated. When push button of the operation switch S ₃ is operated, after the interrupt processing from the fan operation terminal 3 interrupt signal Vi is generated and return data signal from the fan operation terminal 3 including the operation data of the operation switch S ₃ is Returned to the transmission unit 1, the transmission unit 1 receives the operation data, generates control data CD based on the operation data, and includes the control data CD and the corresponding address data AD of the fan control terminal 2. The signal Vs is transmitted to the signal line Ls, and the control data CD is transmitted to the fan control terminal 2. In the fan control terminal 2 that has received this control data CD, the signal processing unit 20 checks the status of the relays Ry ₂ and Ry ₃ corresponding to “weak”, and when the relays Ry ₂ and Ry ₃ are on, , the signal processing unit 20 sends a control signal to the transistor _{Q 14, Q 16} of the relay control unit, a reset coil of the relay _Ry 2, Ry ₃ is energized by turning on the transistor _{Q 14, Q 16,} the relay Ry ₂ The contacts r ₂ and r ₃ are turned off. As a result, power is supplied from the AC power supply AC to the motor M and the motor-operated valve V of the fan device 5, and the fan device 5 operates with a “weak” blowing capacity. Thereafter, a control confirmation signal is returned from the fan control terminal 2 to the transmission unit 1 as a current mode signal. The transmission unit 1 receives this control confirmation signal, confirms the operation state of the fan device 5, and transmits the transmission signal Vs including control data for displaying the current load control state on the display circuit 32 of the fan operation terminal 3. Is transmitted to the signal line Ls. As a result, the green display element LD ₃₁ corresponding to the operation switch S ₃ is turned on in the fan operation terminal 3 and the red display elements LD ₁₂ , ₁₂ corresponding to the other operation switches S ₁ , S ₂ , S ₄ , respectively. LD ₂₂ and LD ₄₂ are lit.

The above case where the on / off operation of the driver of the fan unit 5 is not prohibited as, operation of the fan unit 5 through the corresponding fan control terminal 2 by operating the operation switch S ₄ of the fan operation terminal 3 The on / off operation can be performed, and during operation, the blowing capacity of the fan device 5 can be switched between “weak”, “medium”, and “strong” by the operation switches S _{1 to} S _3. .

Here, when it becomes necessary to prohibit the on / off control of the operation of the fan device 5 as described above, an operator, an administrator, or the like operates the operation switch S ₀ of the on / off prohibition operation terminal 4. Just do
That is, when there is ON / OFF prohibiting the operation terminal 4 of the operation of the push button of the operation switch S ₀ at time t _a in FIG. 5, when operating the operation switch S ₁ to S ₄ of the fan operation terminal 3 as well as an interrupt signal After Vi is returned to the transmission unit 1, the operation data is returned to the transmission unit 1 as a return data signal through an interrupt process (t ₁ ). When the transmission unit 1 receives the operation data signal from the on / off prohibition operation terminal 4, the transmission unit 1 generates control data CD for commanding prohibition of the operation of the fan device 5, and the on / off prohibition operation terminal 4. , The generated control data CD is sequentially transmitted by the transmission signal Vs to the address of the setting function for prohibiting on / off of each fan control terminal 2 (2 ₁ , 2 ₂ ,..., 2 _n ) previously associated with (T ₁₁ ... T _1n ).

The signal processing unit 20 of each fan control terminal 2 that has received the control data CD of the prohibition command sets an on / off prohibition flag for the operation of the fan device 5 based on the control data CD by the setting function described above. Control data CD of the on / off operation of the fan unit 5 from the transmission unit 1 based on the operation of the operation switch S ₄ for fan operation terminal 3 that are associated with each fan control terminal 2 is sent by this Even if it comes, the fan control terminal 2 does not execute the control operation and maintains the current state.

  In the case where the operation of the fan device 5 is on and the above-mentioned “prohibited” flag is set, when the control data CD corresponding to the switching of the blowing capacity is sent from the transmission unit 1, the fan control terminal 2 Performs control to switch the blowing capacity based on the content of the control data CD.

Next, when canceling the set “prohibited” state, the operation switch S ₀ of the on / off prohibited operation terminal device 4 may be operated again.

In other words, after setting “prohibited”, if there is an operation of the push button of the operation switch S ₀ of the on / off prohibited operation terminal 4 as shown in FIG. 5 (t _b ), the interrupt signal Vi is returned to the transmission unit 1. The operation data is returned to the transmission unit 1 as a reply data signal through the interrupt process (t ₂ ). When the transmission unit 1 receives the operation data signal from the on / off prohibition operation terminal device 4, the transmission unit 1 generates control data CD for instructing cancellation of the on / off prohibition of the operation of the fan device 5, and the on / off prohibition operation terminal The generated control data CD is transmitted by the transmission signal Vs to the address of the on / off prohibition setting function of each fan control terminal 2 (2 ₁ , 2 ₂ ,..., 2 _n ) previously associated with the device 4. Transmit sequentially (t ₂₁ ... T _2n ).

The signal processing unit 20 of each fan control terminal 2 that has received the control data CD of the prohibition release command resets the above-described flag by the setting function described above, and cancels the prohibition of on / off for the operation of the fan device 5. . Thereby sent control data CD of the on / off from the transmission unit 1 based on the operation of the operation switch S ₄ for fan operation terminal 3 associated with the fan control terminal 2 of the fan unit 5 operating Then, the fan control terminal 2 executes an on / off control operation of the fan device 5.

Further, when the operation switch S ₀ of the on / off prohibited operation terminal 4 is operated (t _c ), a series of operations of “prohibited” is performed in the same manner as described above. By repeating the operation of the operation switch S ₀ , a series of operations for setting “prohibition cancellation” and “prohibition” are alternately performed.

Further, the transmission unit 1 generates control data CD for controlling the display elements LD ₀₁ / LD ₀₂ of the display circuit 32 of the on / off prohibition operation terminal device 4 in the above-described series of prohibition / prohibition cancellation processing. The transmission signal Vs including the control data CD is transmitted to the on / off prohibition operation terminal 4. That is, at the time of cancellation of the prohibition to light the green display element LD _01, sends the control data CD for turning off the red display element LD _02, turns off the display element LD ₀₁ when opposite to the prohibition, the display red Control data CD for lighting the element LD ₀₂ is sent. From the display of these display elements LD ₀₁ and LD ₀₂ , it can be determined whether or not the on / off operation of the fan device 5 is prohibited.
(Embodiment 2))
In the first embodiment, each fan control terminal 2 is set to prohibit the on / off operation of the fan device 5 and to cancel the prohibition, but in this embodiment, the function of the transmission unit 1 is set to ON. / oFF prohibiting operation terminal performing at every reception of the operation data of the operation switch S ₀ of 4 and a set and reset flag indicating prohibition of oN / oFF operation of the fan unit 5 to set the prohibition and prohibition release , when the operation data of the operation switch S ₄ corresponding from the fan operation terminal 3 to the operation of the on / off of the fan unit 5 in a state where the flag has been set is sent back ignores the the manipulation data A feature is that a processing function is provided so as not to transmit the control data CD to the corresponding fan control terminal 2. Of course, when the operation data corresponding to the switching of the blowing capacity is received, the transmission data CD corresponding to the operation data is generated and the transmission process to the corresponding fan control terminal 2 is performed.

  In this embodiment, only the function of the transmission unit 1 needs to be improved.

  Since the hardware configuration is the same as that of the first embodiment, description of the configuration and description of other operations are omitted.

1 is a system configuration diagram of Embodiment 1. FIG. FIG. 3 is a configuration explanatory diagram of a transmission signal used in the first embodiment. It is a block diagram of the fan operation terminal (and on / off prohibition operation terminal) used for Embodiment 1. FIG. It is a circuit diagram of the fan control terminal used for Embodiment 1. 3 is a timing chart of main operations of the first embodiment.

Explanation of symbols

1 Transmission unit 2 Fan control terminal 3 Fan operation terminal 4 On / off prohibition operation terminal 5 Fan device 6 Transformer 7 Signal line 8 Power supply transformer 9 Drive output line 10 Operation units S _{0 to} S ₄ Operation switches LD ₀₁ , LD _{02 to} LD ₄₁ , LD ₄₂ display element F Fan M Motor V Motorized valve AC AC power supply

Claims (3)

A plurality of fan operation terminals that have at least an operation switch for operating on / off of the operation of the fan device, a unique address is set, and transmit operation data according to the operation of the operation switch through a signal line;
A plurality of fan control terminals, each of which has a unique address set and controls on / off of the fan device based on control data sent to the address via the signal line;
The fan operation terminal is connected to the fan operation terminal and the fan control terminal through the signal line, and has a transmission / reception function for exchanging the operation data and the control data by multiplex transmission with each terminal. A transmission unit that generates control data corresponding to the operation data and transmits the control data to the address of the fan control terminal that has a corresponding relationship set in the fan operation terminal when receiving the operation data sent from Consists of
The transmission unit has an operation switch for setting on / off prohibition of operation of the fan device at the fan control terminal and canceling the prohibition, and a unique address is set, and the operation data is transmitted when the operation switch is operated. With an on / off prohibited operation terminal to be sent to
Each time the operation data is received from the on / off prohibited operation terminal, the transmission unit turns on the operation of the fan device in each fan control terminal associated with the on / off prohibited operation terminal. A fan device control system comprising a processing function for performing a process of alternately setting prohibition and canceling of prohibition of control execution / off control. The processing function of the transmission unit is provided for each fan control terminal associated with the on / off prohibited operation terminal in advance every time operation data is received from the on / off prohibited operation terminal. A function for alternately generating and transmitting one of control data for commanding prohibition of on / off of the operation of the fan device and control data for commanding cancellation of the prohibition,
When control data instructing prohibition of the on / off or cancellation of the prohibition is sent to the fan control terminal, the control data corresponding to the on / off of the operation of the fan device is received. The fan device control system according to claim 1, further comprising a function for setting prohibition of control execution at the time or canceling the prohibition. The processing function of the transmission unit is a fan device in each fan control terminal that is associated with an on / off prohibited operation terminal in advance each time operation data is received from the on / off prohibited operation terminal. From the fan operation terminal corresponding to the on / off operation of the fan device in a state where prohibition and cancellation of the prohibition are alternately set, and prohibition is set for the execution of the on / off control of the operation The fan device control system according to claim 1, wherein the fan device control system has a function of performing processing that does not generate and transmit control data based on the operation data when the operation data is received.

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