JP3250357B2 - Wireless system equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio system apparatus having a plurality of called stations for transmitting a response signal by radio in response to a call from a calling station.

[0002]

2. Description of the Related Art In recent years, research and development of wireless control technology for performing remote control by wireless signals has been remarkable since a troublesome wiring work can be reduced, and various system devices applying the wireless control technology have been researched and developed. In some of these system devices, the service area of the entire system device may be wider than the reach of the antenna even though the antenna power available for communication is weak and the reach of the antenna is narrow. In such a system device, the radio repeaters are distributed and arranged at key points of the system device in consideration of the reach of the antenna power.

[0003] In addition, wireless remote control in recent years has become more sophisticated.
Not only unidirectional communication from the wireless remote controller to the wireless repeater, but also bidirectional communication between the wireless remote controller and the wireless repeater is required. Therefore, the wireless remote controller can not only call the wireless repeater by wireless transmission but also wirelessly receive a response signal from the wireless repeater in response to the call. In addition, the wireless repeater not only wirelessly receives a call from the wireless remote controller, but also can wirelessly transmit a response signal in response to the call from the wireless remote controller.

[0004]

By the way, in a system device in which a plurality of wireless repeaters are dispersedly arranged, at least a service-receivable area (communication-disabled area) is created within a service area of the system apparatus. Not for
Receivable areas of the respective wireless repeaters are arranged so as to overlap.

[0005] However, as described above, in a system apparatus having a radio repeater in which the receivable ranges of the respective radio repeaters are distributed and arranged in a slightly overlapping manner,
Depending on the position of the wireless remote controller that is carried and moved, there may be cases where a plurality of wireless repeaters wirelessly receive a call from the wireless remote controller. In such a case, the wireless remote controller that has been in the reception standby state after completing the call will simultaneously receive the response signals from the plurality of wireless repeaters wirelessly, resulting in interference of the response signals and a correct demodulated signal. I ca n’t get it,
There has been a problem that the reliability of communication may be significantly impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a system device which is arranged so as to overlap the receivable range of each radio repeater. It is an object of the present invention to provide an excellent wireless system device that can secure communication reliability.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention comprises a plurality of wireless repeaters for wirelessly transmitting a response signal in response to a call from a portable and mobile wireless remote controller. A plurality of wireless repeaters which are different for each wireless repeater with respect to a call from a wireless remote controller, wherein the plurality of wireless repeaters are arranged so as to overlap a receivable range of each wireless repeater. A delay response means for wirelessly transmitting a response signal with a delay time is provided.

In a wireless system apparatus comprising a plurality of wireless repeaters for wirelessly transmitting a response signal in response to a call from the wireless remote controller, the plurality of wireless relays are controlled by the wireless remote controller. The first wireless transmission of the response signal to the call is performed substantially simultaneously, and the second wireless transmission of the response signal is provided with response means for wirelessly transmitting the response signal with different delay times for each wireless repeater. It is characterized by the following.

[0009]

With the above arrangement, even when a plurality of wireless repeaters simultaneously receive a call from a wireless remote controller, the plurality of wireless repeaters wirelessly transmit a response signal to the call. Since the time until the start of the communication is different for each wireless repeater, the wireless remote controller can wirelessly receive the response signal without interference.

Further, even if a plurality of wireless repeaters simultaneously receive a call from the wireless remote controller, the plurality of wireless repeaters simultaneously start the first wireless transmission of a response signal to the call. However, since the second wireless transmission of the response signal wirelessly transmits the response signal with a different delay time for each wireless repeater, the wireless remote controller transmits the response signal by wireless transmission of the second response signal. Can be received wirelessly without interference. Moreover, in the non-overlapping area of the coverage of each wireless repeater,
Radio reception can be performed without interference with the first response signal.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
The second embodiment is based on FIG. 1 and FIG.
Each will be described in detail with reference to FIG.

[First Embodiment] A wireless system device described as a first embodiment is configured so that wireless repeaters wirelessly transmit response signals with different delay times.

FIG. 1 is a block diagram showing a presence / absence display device corresponding to a wireless system device, and FIG. 2 shows a wireless transmission timing of a response signal of a wireless repeater corresponding to a called station of the presence / absence display device. It is a timing chart.

The presence / absence display device corresponding to the wireless system device shown in FIG. 1 includes a main body control device A, wireless repeaters B1, B2, B3 corresponding to a plurality of called stations, and a plurality of display boards C1, C2, C3 and radio remote controllers D1,... Dn corresponding to a plurality of calling stations. Main unit control device A, wireless repeaters B1, B2, B3 and a plurality of display boards C1, C
2 and C3 form a control system E connected via a wired transmission line L. The control system E is always powered on, and the display boards C1, C2, C3 are connected to the wireless remote controllers D1,
... The presence / absence state corresponding to Dn is always displayed. In addition, the presence / absence display states of the display boards C1, C2, C3 are always the same.

The main controller A includes a plurality of wireless repeaters B1,
B2, B3 and each of the plurality of display boards C1, C2, C3 are converted into a plurality of radio repeaters B1,
B2, B3 and a plurality of display boards C1, C2, C3 are sequentially polled and accessed sequentially based on the respective unique addresses of the plurality of display boards C1, C2, C3.
2, B3 and monitor boards C1, C2, C3.

In the wireless repeaters B1, B2, and B3, the wireless repeater B1 is on the ceiling of the first floor office, the wireless repeater B2 is on the ceiling of the second floor office, and the wireless repeater B3 is three. Each is installed on the ceiling of the floor office. Wireless repeaters B1, B2,
B3 has different unique addresses for exchanging data with the main controller A via the wired transmission line L.

The display boards C1, C2, and C3 have different unique addresses for transmitting and receiving data to and from the main controller A via the wired transmission line L, but have the same external appearance. C1 also has display board C
2 and the display board C3, the presence or absence of all employees in the office can be displayed. In the display boards C1, C2 and C3, the display board C1 is installed in the office on the first floor, the display board C2 is installed in the office on the second floor, and the display board C3 is installed in the office on the third floor. .

Each of the employees of the office owns one of the radio remote controllers D1,..., Dn, and uses a battery as a power source and is normally turned off. The radio remote controllers D1,..., Dn enable the control system E to identify the respective owners when communicating with the control system E via any of the radio repeaters B1, B2, B3. , But have the same appearance. The radio remote controller D1
An operation unit DA1 and a display unit DB1 are provided.

In the presence / absence display device,
Radio repeaters B1, B2, B3 and radio remote controllers D1,... D
The respective antennas of n are in a state of reaching the corresponding floor and the floor immediately above and below it. That is, when a call from the wireless remote controller D1,... Dn is wirelessly transmitted in the office on the second floor, the call is wirelessly received by any of the wireless repeaters B1, B2, B3. It consists of

The presence / absence display device described above is operated and operated as follows, and operates as follows. That is, the employee who has come to the office operates the operation unit DA1 of the wireless remote controller D1 which he has to turn on the power. Then, the wireless remote controller D1 wirelessly determines whether the display corresponding to the wireless remote controller D1 on each of the display boards C1, C2, C3 is "present" or "absent". In order to make an inquiry to any of the repeaters B1, B2, and B3 and to display it on the display unit DB1, a call is made and a data request signal for the inquiry is wirelessly transmitted.

At this time, assuming that the position of the holder of the radio remote controller D1 is the second floor office, the call is wirelessly received by any of the radio repeaters B1, B2 and B3. And
Each of the wireless repeaters B1, B2, B3 is connected to a display board C1,
If the display corresponding to the wireless remote controller D1 of C2, C3 is "absent", the user tries to wirelessly transmit absence data indicating absence as a response signal.

Each of the wireless repeaters B1, B2, B3 has a delay response means. The delay response means includes:
Each of the radio repeaters B1, B2, and B3 is configured to determine its own delay time by reading a setting state by a combination of on and off of a dip switch (not shown) provided inside each of the casings. In the wireless repeaters B1, B2, and B3 of the presence / absence display device, the delay time of the wireless repeater B1 is T1, the delay time of the wireless repeater B2 is T2, and the delay time of the wireless repeater B3 is T3 is set, and T1 <T2 <T3
Have been in a relationship.

In this presence / absence display device,
One of the radio remote controllers D1,... Dn and the radio repeater B1,
The duration of one data communication with one of B2 and B3 is at most TA, and after performing wireless communication during TA, there is a short pause TB during which no antennas are transmitted to each other. Have been. Further, between the delay times T1, T2, T3 and one data communication duration T0, T1 = TB
, T2 = (2TB + T0), T3 = (3TB + 2T0)
). Note that T1 ≧ TB, T2
.Gtoreq. (2TB + T0) and T3.gtoreq. (3TB + 2T0).

Now, in response to the call from the radio remote controller D1, the radio repeaters B1, B2, and B3 attempting to transmit the absence data to the effect that they are absent as a response signal operate as follows. I do. That is, as shown in FIG. 2, assuming that the wireless transmission WD1 of the call from the wireless remote controller D1 ends at time t0, the wireless repeater B1 with the shortest delay time becomes:
At time t1 after a lapse of the suspension time TB from time t0, the wireless transmission WB1 including the absence data indicating that the user is absent is started, and the wireless transmission WB1 is ended at time t2.

Then, the wireless repeater B having the next shortest delay time
2 is the time t3 when the pause time TB has elapsed since the time t2.
Then, the wireless transmission WB2 including the absence data indicating absence is started, and the wireless transmission WB2 is ended at time t4. Further, the wireless repeater B3 having the longest delay time starts the wireless transmission WB3 including the absence data indicating that the user is absent at the time t5 when the pause time TB has elapsed from the time t4, and at the time t6 End WB3.

The radio remote controller D1, which has made the call and ended the radio transmission WD1 to be in the reception standby state, first transmits the radio transmission WB1 including the absence data indicating the absence from the radio repeater B1. As a result, the response signals from the wireless repeaters B2 and B3 do not interfere with each other.
B1 can be demodulated correctly. Then, since the wireless remote controller D1 has finished receiving the requested data wirelessly, it stops supplying power to the receiving circuit unit (not shown) and displays "absence" on the display unit DB1 (for example, lights red). Is displayed. Therefore, the employee who has the radio remote controller D1 can see the display boards C1, C2 and C3 without looking at the display boards C1, C2 and C3.
It is possible to recognize that the current presence / absence display is in the “absence” state. In this case, the wireless transmission WB
2, WB3 is wasted.

Thereafter, the employee who has the wireless remote controller D1 performs an operation for changing the presence / absence display of his / her "absence" state to the "present" state from the operation unit DA1. The wireless transmission for changing the "absence" state to the "present" state is wirelessly transmitted from the wireless remote controller D1 after time t6.

Incidentally, as in the presence / absence display device described above,
The delay response means reads the on / off combination setting state of a dip switch (not shown) provided inside each housing of the wireless repeaters B1, B2, B3 to determine its own delay time. In a specific area (for example, an area in which only the wireless repeater B3 can perform wireless reception) in an area where the coverage areas of the wireless repeaters B1, B2, and B3 do not overlap, the wireless remote control is always performed. Actuator D1, ...
Dn requires a long time from the time of calling to the time when the response signal is received by radio, and the treatment of the service area of the radio repeater B3 is poor. Therefore, each of the wireless repeaters B1, B2, and B3 is provided with a random number generating means, and each time the call is wirelessly received, which of the above-described delay times T1, T2, and T3 is used is determined by the random number generating means. If the delay time determined by the random number is adopted by the delay response means, the radio reception may fail rarely due to radio interference, but the service treatment conditions of the respective service areas of the radio repeaters B1, B2 and B3 can be the same. .

[Second Embodiment] In a wireless system apparatus described as a second embodiment, a plurality of wireless repeaters simultaneously start wireless transmission of a first response signal, but wirelessly transmit a second response signal. The transmission is configured such that the wireless repeaters wirelessly transmit the response signals with different delay times.

FIG. 3 is a timing chart showing the wireless transmission timing of the response signal of the wireless repeater corresponding to the calling station of the presence / absence display device corresponding to the wireless system device. In the presence / absence display device described as the second embodiment, the block diagram is the same as that of FIG. 1 of the above-described first embodiment, so that FIG. 1 will be used in the following description. In addition, the same reference numerals are used for the equivalent parts, and the detailed description of the equivalent parts will be omitted.

The presence / absence display device described as the second embodiment is different from the first embodiment in the following features. That is, in the plurality of wireless repeaters B1, B2, B3 of the presence / absence display device, the first response signal to the call from the wireless remote controllers D1,... The wireless transmission is performed substantially simultaneously, and the second wireless transmission of the response signal is performed with a different delay time for each wireless repeater, and a response unit is provided which repeatedly performs wireless transmission two times intermittently.

In the presence / absence display device,
Radio repeaters B1, B2, B3 and radio remote controllers D1,... D
The respective antennas of n are in a state of reaching the corresponding floor and the floor immediately above and below it. That is, when a call from the wireless remote controller D1,... Dn is wirelessly transmitted in the office on the second floor, the call is wirelessly received by any of the wireless repeaters B1, B2, B3. It consists of

The presence / absence display device configured as described above is operated and operated as follows, and operates as follows. That is, the employee who has come to the office operates the operation unit DA1 of the wireless remote controller D1 which he has to turn on the power. Then, as in the case of the first embodiment, the display corresponding to the wireless remote controller D1 on each of the display boards C1, C2, C3 is either "present" or "absent". Wireless repeater B
Display part D after inquiring any of 1, B2, B3
In order to display on B1, a call is made and a data request signal for the inquiry is wirelessly transmitted.

At this time, assuming that the position of the holder of the wireless remote controller D1 is the second floor office, the call is wirelessly received by any one of the wireless repeaters B1, B2 and B3. And
Each of the wireless repeaters B1, B2, B3 is connected to a display board C1,
If the display corresponding to the wireless remote controller D1 of C2, C3 is "absent", the user tries to wirelessly transmit absence data indicating absence as a response signal.

Each of the radio repeaters B1, B2, B3 has a delay response means. The delay response means includes:
Each of the radio repeaters B1, B2, and B3 is configured to determine its own delay time by reading a setting state by a combination of on and off of a dip switch (not shown) provided inside each of the casings. In the wireless repeaters B1, B2, and B3 of the presence / absence display device, the delay time of the wireless repeater B1 is T1, the delay time of the wireless repeater B2 is T2, and the delay time of the wireless repeater B3 is T3 is set, and T1 <T2 <T3
Have been in a relationship.

In the presence / absence display device,
One of the radio remote controllers D1,... Dn and the radio repeater B1,
The duration of one data communication with one of B2 and B3 is at most TA, and after performing wireless communication during TA, there is a short pause TB during which no antennas are transmitted to each other. Have been. Further, between the delay times T1, T2, T3 and one data communication duration T0, T1 = TB
, T2 = (2TB + T0), T3 = (3TB + 2T0)
). Note that T1 ≧ TB, T2
.Gtoreq. (2TB + T0) and T3.gtoreq. (3TB + 2T0).

Now, in response to the call from the radio remote controller D1, the radio repeaters B1, B2, B3 attempting to transmit the absence data to the effect that they are absent as a response signal will operate as follows. I do. That is, as shown in FIG. 3, assuming that the wireless transmission WD1 of the call from the wireless remote controller D1 ends at time t0, the wireless repeaters B1, B2, and B3 operate at time t1 when the pause time TB has elapsed from time t0. Then, the wireless transmissions WB11, WB21, WB31 corresponding to the first response signal including the absence data indicating the absence are started, and the wireless transmissions WB11, WB21, WB31 are ended at time t2.

Thereafter, the radio repeater B having the shortest delay time
1 is the time t3 when the pause time TB has elapsed from the time t2.
Then, the wireless transmission WB12 corresponding to the second response signal including the absence data indicating that the user is absent is started, and the wireless transmission WB12 is ended at time t4. Further, the wireless repeater B2 having the next shortest delay time starts the pause time TB from time t4.
The wireless transmission WB22 corresponding to the second response signal including the absence data indicating that the user is absent is started at time t5 when the time has elapsed, and the wireless transmission WB22 is ended at time t6. Furthermore, the wireless repeater B3 having the longest delay time is
At time t7 after a lapse of the suspension time TB from time t6, the wireless transmission WB32 corresponding to the second response signal including the absence data indicating that the user is absent is started, and the wireless transmission WB32 is ended at time t8. .

The radio remote controller D1 which has made the call and ended the radio transmission WD1 to be in the reception standby state first receives the radio transmission WD1.
Radio reception is performed in a state where B11, WB21 and WB31 are interfered with each other, so that a correct demodulated signal cannot be obtained and the reception standby state is continued. Then, the radio remote controller D1 operates at time t.
From 3 to time t4, wireless transmission WB12 including absence data indicating absence from wireless repeater B1 is wirelessly received without interference, and wireless transmission WB12 can be correctly demodulated. Then, since the wireless remote controller D1 has finished receiving the requested data wirelessly, it stops supplying power to the receiving circuit unit (not shown) and displays "absence" on the display unit DB1 (for example, lights red). Is displayed. Therefore, the employee who has the wireless remote controller D1 can recognize that his / her present / absent display is "absent" without looking at the display boards C1, C2 and C3. The subsequent operation is omitted.

Therefore, in this case, the wireless transmissions WB11, WB21, WB31 corresponding to the first response signal are wasted. However, each of the wireless repeaters B1, B2, B
In the non-overlapping area of the receivable range of No. 3 (usually, the non-overlapping area is much larger than the overlapping area), radio reception can be performed without interference with the first response signal. . Moreover, in the presence / absence display device of the second embodiment, unlike the presence / absence display device of the first embodiment, a specific, for example, wireless repeater B
Only the service area 3 is a wireless remote controller D1, ... Dn
It takes a long time from the outgoing call to the wireless reception of the response signal, and only the service condition of the service area of the wireless repeater B3 deteriorates. This can be prevented without providing the random number generating means as described.

It should be noted that the present invention is not limited to the above-described embodiment, but has a configuration in which a plurality of called stations (wireless repeaters) respond to a calling station (wireless remote controller). If it is a system device, not only the presence / absence display device,
It goes without saying that the present invention can be widely applied to an air conditioning control system device, a lighting control system device, a wireless remote control system device, and the like.

[0042]

As described above, the radio system apparatus of the present invention is constructed as described above, so that a plurality of radio repeaters simultaneously transmit a response signal to the call of the radio remote controller by radio. The wireless remote controller can reduce the overall time required from calling to receiving the desired data from the wireless repeater, thereby improving the responsiveness of the wireless remote controller. There is an effect that a system device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a wireless system device according to the present invention.

FIG. 2 is a timing chart showing wireless transmission timing of a wireless repeater of the wireless system device.

FIG. 3 is a timing chart showing wireless transmission timing of a wireless repeater of another embodiment of the wireless system device according to the present invention.

[Explanation of symbols]

 Bn wireless repeater (where n is an integer of 1, 2, 3) Dn wireless remote controller (where n is an integer of 1, 2, ...)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-214833 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04Q 9/00-9/16 H04L 12 / 28

Claims (1)

(57) [Claims] 1. A wireless relay device comprising: a plurality of wireless repeaters for wirelessly transmitting a response signal in response to an outgoing call from a portable and mobile wireless remote controller; in the radio system unit to arrange the plurality of radio repeater, the first time substantially simultaneously row radio transmission of the response signal of that pair to a call from the wireless remote controller
The second wireless transmission of the response signal is performed for each wireless repeater.
Response signals are transmitted wirelessly with different delay times.
Wireless system and wherein the is provided with a answer means.