JPH09107322A - Radio controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the radio controller in which transmission disturbance between same model of radio controllers is reduced and a reply signal and information of a state change are communicated as fast as possible. SOLUTION: Plural frequencies in use are decided by an arithmetic means 3 from a given identification number and communication is made while selecting a frequency in a prescribed timing. Furthermore, when a reply signal is received, the received frequency is used, and when plural slave sets are in operation, a frequency switching pattern is revised at the reply between a master set and each slave set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for facility equipment equipped with a wireless device.

[0002]

2. Description of the Related Art According to the Radio Law, radio devices are supposed to transmit after confirming that the frequency to be transmitted is not being used, and must not be transmitting if the frequency is being used. . Conventionally, the frequency used by the wireless control device is switched at a specific timing according to a predetermined program, but there is no difference in the frequency used by each wireless control device.

Further, there has been no conventional radio control apparatus for changing the program of the used frequency between the master unit and the slave unit according to the contents of communication.

[0004]

However, when the radio control devices are used in the market, for example, when a plurality of radio control devices are installed in a short distance so that they can receive each other's communication without any trouble, the respective use frequencies are different. May be the same, or may switch at the same timing, which may cause a situation in which transmission cannot be performed at the used frequency.

An object of the present invention is to solve the above problems, and it is an object of the present invention to easily perform wireless communication even when a plurality of the same wireless control devices are installed in an extremely short distance in the market.

[0006]

In the wireless control device of the present invention, transmission / reception for transmitting / receiving a wireless signal using a plurality of radio frequencies arbitrarily selected corresponding to an identification number from all radio frequencies permitted to be used. And a transmission / reception frequency changing means for instructing the transmission / reception means to switch and use the radio frequency.

According to the present invention, even when a plurality of the same radio control devices are arranged at short distances, the radio control devices have different identification numbers and the combination of frequencies to be used is different. Because they are different, wireless communication can be performed without interference.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION To achieve the above object, a first means of a radio control apparatus according to the present invention comprises a master unit and a slave unit, and both units have a unique identification number. The transmission / reception means for transmitting / receiving a radio signal by using a predetermined number of radio frequencies to reduce redundant use among all the radio frequencies used for communication, and switching use of the predetermined number of radio frequencies according to a predetermined usage method. The transmission / reception frequency changing means for instructing the transmission / reception means to do so is provided.

A second means of the present invention is, in the wireless control device, a timer means for repeating a predetermined time measurement in synchronization between a master unit and a slave unit, and a reception system after the predetermined time has been measured by the timer means. Power supply control means for controlling the reception power supply system of the slave unit so as to enter, and a first switching instruction for switching the predetermined number of radio frequency signals in response to a measurement end signal for a predetermined time from the timer means, The slave unit that has received the transmission from the device issues a second switching instruction to continue using the parent device without switching the radio frequency at the time of the transmission of the parent device that has transmitted the transmission, and gives the first switching instruction after returning. It is provided with a frequency changing means.

According to a third aspect of the present invention, the radio control device of the second means receives the measurement end signal of a predetermined time from the timer means and gives an instruction to switch the radio frequency of the predetermined number. The first switching instruction is issued, and the parent device that receives the transmission from the child device issues the third switching instruction to continue to use with the child device without directly switching the radio frequency of the child device that has transmitted the transmission frequency, and then replies. It is provided with frequency changing means for giving the first switching instruction later.

The fourth means of the present invention is based on the above second aspect.
When the wireless control device of the means comprises a master unit and a plurality of slave units, the response of the master unit to the transmission from the slave unit is returned by adding information according to the frequency switching of the first switching instruction. However, the slave unit responds to the transmission from the master unit by responding according to the frequency switching of the second switching instruction, and then issuing the first switching instruction after the reply.

According to the first means of the present invention, even when a plurality of the same radio control devices are installed in an extremely short distance in the market, each radio control device has a different identification number and a combination of frequencies to be used. Since it is different, wireless communication can be easily performed.

According to the second means of the present invention, the slave unit returns a response by using the frequency that has been transmitted, thereby increasing the availability probability of the used frequency when the slave unit responds to the master unit. It is possible to issue a response signal without being disturbed by the transmission of another radio control device.

According to the third means of the present invention, the master unit returns a response by using the transmitted frequency, thereby making it possible to determine the availability probability of the used frequency when the master unit responds to the slave unit. Therefore, the response signal can be output without being disturbed by the transmission of other wireless control devices.

According to the fourth means of the present invention, when a plurality of slave units are used, the frequency switching between the slave unit and the master unit is made different, so that transmission from one slave unit is performed. The master unit transmits a response signal to the slave unit at a timing at which another slave unit can simultaneously receive the signal, and new information can be quickly transmitted to the other slave units.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a master unit,
Reference numeral 2 is a master unit timer means for measuring the synchronization timing with the slave unit 3, 3 is a calculating means for determining a frequency to be used from a given identification number, and 4 is a master unit transmission / reception frequency changing means for the master unit timer means 2. The frequency determined by the calculating means 3 is changed according to the time count. Reference numeral 5 is a master unit transmitting / receiving means for transmitting / receiving a radio signal, 6 is a master unit operating means (may be a signal generating means) including a switch, and 7 is a master unit transmitting / receiving antenna.

Reference numeral 9 is a slave unit timer means for measuring the synchronization timing with the master unit 1, and 10 is a slave unit transmission / reception frequency changing unit for changing the frequency determined by the calculating unit 3 according to the time measured by the slave unit timer unit 9. . Reference numeral 11 is a handset transmission / reception means for transmitting / receiving a radio signal, 12 is a power supply control means for controlling the power supply from the battery to the handset transmission / reception means 11 according to the time measured by the handset timer means 9, and 13 is a handset including a switch or the like. An operation unit (which may be a signal generation unit) 14 is an antenna for transmitting / receiving a slave unit.

Next, the operation of the above configuration will be described. In this case, the main | base station 1 shall use the power supply of AC100V inexhaustibly, therefore, it is always ready to receive, transmits whenever it is needed, and is ready to receive it immediately thereafter. In this case, the slave unit 8 uses, as a power source, a power source having a limited energy such as a battery (not shown), and the power source control unit 1 is timed by the slave unit timer unit 9.
2 supplies intermittent power to the handset transmitter / receiver 11 to perform intermittent reception, and the handset transmitter 13 can immediately transmit when a signal is received. Of course, the configuration of the power supply may be such that the master unit and the slave unit are opposite to each other, both may be AC100V, and both may be batteries. Further, even if it is a battery or the like, it may be always received in consideration of the consumption time.

FIG. 2 is an example of a synchronous communication timing chart of the present invention. When the switch of the cordless handset 8 is operated (P
4) The slave unit 8 transmits an operation signal to the master unit 1 (K), and the master unit 1, which is constantly receiving the signal, receives this signal (L). After that, the parent device 1 sends a response signal to the child device 8 (basically, the person who receives the transmission always returns the response signal so that the sending side can know that the signal has been received) (M), and the child device 8
Receives it (N). After a lapse of a predetermined time T4 seconds from the end of the response signal, the master unit 1 and the slave unit 8 respectively operate the timer units 2 and 9 so that they can communicate at the same timing.

The transmission / reception operation up to this point is performed on the channel A which is a predetermined transmission / reception frequency. By this operation, timer synchronization is established, and the slave unit 8 starts T synchronization thereafter.
The power supply control means 12 turns on the power supply of the receiving means every 5 seconds to intermittently receive as shown by the frequencies B, C, D, B, ... (P), and the parent device 1 also receives the predetermined time every T5 seconds. Then, the transmission timing to the slave unit 8 is waited at the frequencies B, C, D, B, ... (O).

The frequencies B, C and D are three communication channels determined by the calculating means 3 based on the given identification numbers, and the response from the base unit 1 to the handset unit 8 by the above-mentioned channel A is made. At this time (M), this frequency information is transmitted. The slave unit 8 receives this (N) and the slave unit transmission / reception frequency changing unit 10 stores the same, so that the slave unit 8 and the master unit 1 can share the same communication channel.

In the calculating means 3, for example, the last digit of the given identification number is set to 6 because a fixed number of channels (channels 1 to 6 out of 46 frequencies used here are intermittent communication bands). ) And add 1 to the remainder to make channel B. Similarly, divide the last two digits of the identification number by a fixed number of channels (here, the maximum number of channels is 46) and add 1 to the remainder. C
It's like a channel. That is, if the last two digits of the identification number are 54, channel B is (4 ÷ 6 remainder) +1 and channel C is (54 ÷ 46 remainder).
It becomes 9 with +1.

In this way, the channels B, C and D are determined by the given identification numbers, so that they can be calculated by simple calculation.
Considering that the three frequencies are combined in a permutation like a permutation, it is possible to create a device of 46 × 45 × 44 = 91080 different frequency combinations, and it is possible to reduce the frequency duplication.

After the timer synchronization is established, the transmission / reception frequencies of both the master unit 1 and the slave unit 8 are switched at the following timings. First, as shown in the I-unit reception channel, the base unit 1 receives the channel B for the intermittent reception cycle T5 seconds, the channel C for T5 / 2 seconds, and the channel D for the next T5 / 2 seconds, as shown in I reception channel. (The time distribution for one cycle may be a different pattern). In this, the master unit transmission / reception frequency changing unit 4 confirms the time measured by the master unit timer unit 2 and controls the master unit transmitting / receiving unit 5. Corresponding to this, the transmission of the slave unit 8 needs to be performed on the same channel as the reception channel of the master unit 1. For example, when there is a switch operation at P5, the slave 8 transmits an operation signal (K), and the transmission channel at this time may be set to the channel B received by the master 1. That is, as shown in (J), in the transmission channel of the slave unit 8, the slave unit transmission / reception frequency changing unit 10 confirms the time measured by the slave unit timer unit 9, and the slave unit transmitting / receiving unit 11 at the same timing as the master unit 1. Switch the transmission channel of. If the slave unit 8 determines that the radio wave of the same frequency has already been transmitted immediately before transmission, there is no problem if it waits until the next transmission channel C to transmit.

Next, as indicated by P slave unit reception channel & timing, the reception of the slave unit 8 is carried out intermittently at the T5 second cycle as described above. Then, at the reception timing after T5 seconds, the signal is received by the channel C, and is cyclically changed to the next channel D and the next channel B again. This is because the slave unit transmission / reception frequency changing unit 10 counts the lapse of T5 seconds measured by the slave unit timer unit 9, and the slave unit transmitting / receiving unit 1 is counted every T5 seconds.
This is possible by controlling one reception channel. Corresponding to this, the transmission of the master unit 1 needs to be performed on the same channel as the reception channel of the slave unit 8. This is because the master unit transmission / reception frequency changing unit 4 counts the lapse of T5 seconds counted by the master unit timer unit 2, and the master unit transmitting / receiving unit 5 is counted every T5 seconds.
It is possible by controlling the transmission channel of. if,
If the base unit 1 determines that the radio wave of the same frequency has already been transmitted immediately before the transmission, there is no problem if it waits until the next channel after T5 seconds before transmission.

In the above example, three frequencies were used,
It is possible to increase the number to increase the probability of vacant frequencies.
Further, the calculating means 3 may not be built in the master device 1 but may have a means for calculating from the identification number externally, and only the calculation result may be input to the master device transmitting / receiving frequency changing means 4, or the calculation result of the master device or the slave device may be input. It is also possible to calculate in one of them and send the result to the other by communication.

Next, when a signal is generated by the parent device operating means 6 of the parent device 1 at P6, the parent device transmitting / receiving means 5 transmits to the child device 8 through the channel D at the parent device transmission timing T6 seconds later ( O), the handset transmitter / receiver 11 receives this on channel D (P). Then, the subsequent response from the child device 8 to the parent device 1 must be performed by the child device transmission channel B, but this is returned by the channel D (K). This is because there is a track record that the channel B to be used from now on could not receive what kind of usage situation, and the channel D that received the transmission could receive the transmission, and the response signal immediately after receiving the transmission. This is because there is a high possibility that it will be vacant because it will be returned. Then, the base unit 1 that receives the response is also set to receive on the channel D.

When the response operation from the slave unit 8 to the master unit 1 is completed, thereafter, both the master unit and the slave unit wait for the channel B until the timing of the next T5 second cycle. By doing so, even when there is a transmission from another child device, the parent device can receive it.

On the contrary, a timing chart at the time of response from the master unit 1 to the slave unit 8 is shown in FIG. When a signal is generated by the child device operating means 13 of the child device 8 at P7, the child device transmitting / receiving means 11 transmits to the parent device 1 via the channel B (Q), and the parent device transmitting / receiving means 5 receives it on the channel B. (R).
Then, at the transmission timing of the master unit after T7 seconds, the process of returning the response to the slave unit 8 on the master unit transmission channel C is performed on the channel B (U).

However, when there are a plurality of child devices, when the child device makes a transmission request and sends a signal to the parent device, the parent device sends a response on the channel corresponding to the signal from one child device. When returned, the reception channel of the other slave unit remains the original transmission channel of the master unit, and thus the response of this master unit cannot be received. Therefore, at the next transmission timing, the state change of the master unit is transmitted to another slave unit, which causes a delay in receiving information. Therefore, the channel switching when there is no communication is used only for the response of the master unit to the transmission from the slave unit when there are a plurality of slave units. As a result, a plurality of child devices can simultaneously receive the response from the parent device.

[0031]

As described above, according to the first means of the present invention, even when a plurality of the same wireless control devices are installed in a very short distance in the market, each wireless control device has a different identification number, Since the combination of frequencies used is different, wireless communication can be easily performed.

According to the second means of the present invention, the slave unit returns a response by using the frequency that has been transmitted, thereby increasing the vacancy probability of the used frequency when the slave unit responds to the master unit. It is possible to issue a response signal without being disturbed by the transmission of another radio control device.

Further, according to the third means of the present invention, the master unit returns a response by using the received frequency, so that the availability probability of the used frequency when the master unit responds to the slave unit is determined. Therefore, the response signal can be output without being disturbed by the transmission of other wireless control devices.

Further, according to the fourth means of the present invention, when a plurality of slave units are used, the master unit is transferred to the slave unit while increasing the availability probability of the frequency used when the slave unit responds to the master unit. By changing the frequency of the response signal of No. 1 when there is no communication, the master unit transmits the response signal for the transmission from one slave unit at the timing when another slave unit can receive it at the same time, and the other slave unit also transmits it. You can convey new information quickly.

[Brief description of the drawings]

FIG. 1 is a block diagram of a wireless control device according to an embodiment of the present invention.

FIG. 2 is a synchronous communication timing chart of the device.

FIG. 3 is a timing chart of response communication from the master unit to the slave unit of the same device.

[Explanation of Codes] 1 parent unit 2 parent unit timer means 3 computing unit 4 parent unit transmission / reception frequency changing unit 5 parent unit transmitting / receiving unit 6 parent unit operating unit 7 parent unit transmitting / receiving antenna 8 slave unit 9 slave unit timer unit 10 slave unit transmitting / receiving Frequency changing means 11 Handset transmission / reception means 12 Power supply control means 13 Handset operation means 14 Handset transmission / reception antennas

Claims (4)

[Claims] 1. A plurality of radio frequencies, each of which is composed of a master unit and a slave unit, has a unique identification number between both units, and is arbitrarily selected according to the identification number from all the radio frequencies permitted to be used. A radio control device comprising: a transmission / reception unit for transmitting / receiving a radio signal, and a transmission / reception frequency changing unit for instructing the transmission / reception unit to switch and use the radio frequency. 2. A timer means for repeating a measurement of a predetermined time in synchronization between the master and the slave, and a power supply for controlling a reception power supply system of the slave so as to enter a receiving system after the timer finishes measuring the predetermined time. Upon receiving a measurement end signal for a predetermined time from the control means and the timer means, a first switching instruction is issued to instruct a switching of a predetermined number of radio frequency, and the parent device that receives the transmission from the parent device transmits the parent signal. 2. The wireless control device according to claim 1, further comprising frequency changing means for issuing a second switching instruction for continuing to use with the parent device without switching the radio frequency at the time of transmission of the device, and for issuing the first switching instruction after returning. 3. A child device which has received a transmission from a slave unit and has received a transmission end signal from a timer unit and has issued a first switching instruction to instruct a switching of a predetermined number of radio wave frequencies. 3. The wireless control device according to claim 2, further comprising frequency changing means for issuing a third switching instruction for continuing to use with the child device without switching the radio frequency at the time of transmission of the device, and for issuing the first switching instruction after returning. 4. When the radio controller according to claim 2 is composed of a master unit and a plurality of slave units, the response of the master unit to the transmission from the slave unit is the frequency switching of the first switching instruction. Accordingly, a wireless control device which adds and returns information, responds to the transmission from the master unit according to the frequency switching of the second switching instruction, and sends the first switching instruction after the reply.