JPS60263533A - Mca radio communication equipment - Google Patents

Abstract

PURPOSE:To reduce the power consumption at the time of waiting in a long-time parking by dividing a circuit into the 1st circuit for transmission and the 2nd circuit for a waiting program and a CPU and using the 1st and 2nd power supplies for both circuits. CONSTITUTION:The 2nd power supply supplies the power +B via a terminal P2 to the 2nd circuit 2 which consists of a CPU15, an FF37, a PLL circuit 13, a code input/output circuit 14, an RF unit 2, a mixer 4 and a wave detector 5 and executes a waiting program. The - side of the 2nd power supply is grounded via a diode 42, terminals Z2 and Z1 and then a power switch SW17a provided to an operation plate 17. While the power is supplied to the 1st circuit consisting of circuits of a transmission system from a terminal P1. The outgoing side of a switch SW22a which works by attachment/detachment of an ignition key provided to a mobile main body 19 is supplied to an AND circuit 38 together with the outgoing side of the SW17a. When the outgoing side of the circuit 38 or a terminal Q of the FF37 is active, a switch SW40 is driven via a driver 39. Then the float of a generator 21 or the discharge current of an accumulator 20 is supplied to the 1st circuit via the terminal P1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an MCA wireless communication device, and particularly to an MCA wireless communication device installed in a mobile subscriber station.

[Technical background of the invention and its problems]

As shown in Figure 1, a conventional MCA wireless communication device uses a CPU.
15, ROM 16, and PLL circuit 13, the OMCA system divides the 800 MHz band into 25 blocks, and each unit block has one control channel (hereinafter referred to as C channel) and 15 communication channels (hereinafter referred to as S channel). (The final block consists of 14 lines). The unit block has an M that controls the MCA.
A CA control station is provided. A wireless zone with a diameter of 15 to 251 am is formed around this MCA control station.

The subscriber station group that receives the service has a subscriber station consisting of a command station, a mobile station, etc., and each subscriber station is equipped with an MCA wireless communication device.〇The communication channels allowed per unit block are 4 to 15 channels, and the subscriber stations are accommodating The number of stations to join is 100 (
)-6000, number of calls per hour 0.5, average hold time 2
0 seconds, 15 channels, 14 erlangs per waiting call.

A unit processor accommodates a plurality of subscriber station groups, and each subscriber station group can use only one channel at a time. Same again
Calls can only be made between subscriber stations belonging to the licensee, J+,
Each call is limited to 60 seconds.

Pit synchronization dl, frame synchronization d2 . 1st pro, Kudata d3. The downlink control signal data Fd consisting of the 220th block data d4 is constantly transmitted. Bit synchronization d1 is 101010 with 16 pit configuration
... shows the pattern, and 7V-A synchronization d2 is 0001
00110101111 (7) 15 pits) M series pattern. The first block data d3 and the second block data d4 both have a 72-bit configuration (valid data is 30 bits).
The bits and the remaining bits are encoded as Hagelberger ÷ code using a tippit. Command information 'z (10p, 11 bits), command am (12 to 14 bits), and command information a4 (18 to 23 bits). The second block data d4 is the system code a as shown in FIG.
4. (30-39 bits), user code 1L6 (4
0 to 49 pits) and channel number as (5Q to 59
Bits 30 to 49 are called group codes. The lower control signal data Fd is transmitted at a speed of 1200@pm in 175 bits per unit frame, and is transmitted through the antenna 1. shown in FIG. RF unit 2. Bandpass filter 3. Mixer 4. Detector 5. The signal is input to the CPU 15 via the code input/output circuit 14. CPU 15
Now, the power-on program 23.0 channel acquisition program 24. shown in FIG. A standby program 26 is executed to identify whether there is an incoming call. The judgment index 25 determines frame synchronization do, and the judgment index 27 determines the system boot a! and a
'11 Judgment indexes 29 to 32 analyze command 13, and judge whether or not the S channel specified in judgment index 29 matches the data written in the ROM. Determines whether the received group code belongs to the own group. If the judgment identifies an incoming call to the own group, the S channel verification zologram is sent via the B connector to the call management program (not shown) 71:I-
do. The decision to make a call is made by the box 28, and a transition is made from the A connector to a calling program (not shown). In either case, return is made via connector R1 or R* at the end of the operation.

Usually, a mobile access station uses power supplied to a terminal B (by a float from a generator 21 that generates electricity by rotation of an engine or by discharge from a storage battery 20), as shown in FIG. The capacitor 20 has a large capacity of about 30 HA and is designed to supply power to various circuits of the mobile body 19. For this reason, various accessory circuits are provided to make it convenient for transmitting and receiving while driving for a short distance, unlike portable electronic devices.These various accessory circuits include annunciator sounds, futenshin lamps, and antennas that support phasing. A matching mechanism or the like may also be incorporated. Therefore, the power consumption of the first circuit including various display members provided on the operation panel 17 is larger than the power consumption of the second circuit related to the original standby means and the CPU 15, and the power consumption during standby is higher. There is a problem in that the power consumption during reception is almost equal to the power consumption during standby of other portable electronic devices with similar functions such as pagers. In order to solve this problem, the power may be turned on in units of modules by GLODARAM control each time a transition is made from the standby program 26 shown in FIG. 5 to another program. However, 1/C
Since circuits often have complex interference phenomena and transient-related abnormal operations when the power is turned on, it is difficult to deal with them, including the initial setting method when the power is turned on.
Therefore, when the vehicle is parked for a long period of time, the power switch 18 of the MCA wireless communication device must be turned off to prevent the storage battery 20 from over-discharging, thereby making it unready.

[Purpose of the invention]

The present invention has been made to eliminate the above-mentioned drawbacks, and an object of the present invention is to provide an MCA wireless communication device that reduces power consumption during standby when the vehicle is parked for a long time.

[Summary of the invention]

In the present invention, each circuit of an MCA wireless communication device is divided into a first circuit and a second circuit. The second circuit is composed of circuits related to the standby program and CPH, and the circuits related to the audio circuit 6 and the display member provided on the operation panel 17 of the reception system are classified as the first circuit together with the transmission system circuit.

The first circuit and the second circuit are supplied with power from the first power source and the second power source, respectively. Further, a first switching means is provided which operates in accordance with attachment/detachment of the ignition key, and the first switching means drives a second switching means for connecting the first power source and the first circuit. This second switching means is configured to operate upon an incoming call.

[Embodiments of the invention]

An embodiment of an MCA wireless communication device according to the present invention will be described below with reference to the drawings.

Components that are the same in FIG. 6 and FIG. 1 are designated by the same reference numerals, so their explanation will be omitted.

In FIG. 6, 41 is a second power source. The second power supply is connected to the CPU 15. D flip fro, zo 3
7, PLL circuit 13, code input/output circuit 14, RF Uni,
y) Supply power to a second circuit consisting of 2, mixer 4, and detector 5. (-) side is diode 42, z, -zl
It is connected to a reference voltage point via a power switch 17m provided on the operation panel 17. A first circuit made up of transmission system circuits and the like other than the second circuit is supplied with power from the terminal P1. The output side of the first switch 22m, which is formed by a normally open contact provided on the mobile body 19 and operates when the ignition key is attached or removed, is connected to the output side of the 9/4 power switch 17m provided on the operation panel 17. Connect to one input side and the other input side of circuit 38.

When the output side of the AND circuit 38 or the Q terminal of the D switch 37 becomes active, the second switch 40 is driven via the driver 39t-, and the normally open contact of the second switch 40 is opened. For this reason, the storage battery 20 serving as the first power source
The terminal shaft is connected to the terminal P1 through the normally open contact which is closed, and the discharge current of the float or storage battery 20 of the generator 21 is connected from the terminal P1 to the first terminal, which is the load circuit. Supplied to the circuit.

The D7 Rig Frog 37 uses the Xt eX* shown in the dotted line when the judgment in FIG.
Processes 33 and 34 are executed through the 1X8 1X4 connector to set the D flip f70 37. Also, the point where the call origination and incoming call processing are completed and the return to the first address is shown by dotted lines from connectors R1 and R2. Yl*Y2
a y,l Processing 35 or 3 via Y4 connector
6 is executed and the set D7 rig 7CI, f37 is reset.

Here, while the vehicle is running, the first switch 22m is closed, but if the four-way switch 17m (provided on the operation panel 17) is left off, the second switch 40 cannot operate. Further, since the (-) side of the second power supply is not connected to the reference potential point, the CPU 15 does not operate. When the power switches 1, 7& are turned on, the second switch 4o operates, and power is supplied from the terminal P to the first circuit. When the ignition key is removed from the keyhole when leaving the car to park, the first switch is restored, the AND circuit 38 becomes inactive, and the second switch 40 is restored. For this reason, the first
Although the power supply to the circuit is cut off, the standby program 26 shown in FIG. 5 is executed. When there is an incoming call for the own group, the D slip 70 flag 37 is set in process 34. Therefore, the second
switch 40 is operated, and the first power supply is supplied to the first circuit.

If necessary in this state, record the subscriber station number of the calling party,
Alternatively, the transmitting circuit notifies the calling party that the answering machine recorder has become effective. When the incoming call processing is completed, processing 35 or 36 is executed to reset the D71J controller 37. Therefore, the second switch 40 is restored. The circuit is configured to correspond to the standby state while driving, the standby state during a long period of stoppage, and the standby state when an operation such as removing the ignition key from the keyhole is detected. Then, circuits related to phasing, ignition noise, various display members, etc. can be incorporated into the first circuit. Therefore, it is possible to reduce the power consumption when the vehicle is stopped for a long time compared to the power consumption in the standby state while the vehicle is running.

In this embodiment, the first power source and the second power source are provided separately, but they may be shared in consideration of the voltage to be handled and the circuit configuration.

〔Effect of the invention〕

The MCA wireless communication device according to the present invention has a first switching means that operates in conjunction with the attachment/detachment of the ignition key of a mobile subscriber station, and a first switch 77 means. a second switch 77 means connected to the circuit, a second power source used for the second circuit related to the standby means and CPH, and means for activating the second switch 77 means in response to an incoming call. Because of the built-in configuration, the power consumption during standby when parked for a long time is reduced compared to the power consumption during normal standby. When this is done, the storage battery will not be over-discharged, and automatic answering, answering machine recording, etc. will be possible.

[Brief explanation of the drawing]

FIG. 1 is a professional diagram of a conventional MCA radio communication device, and FIGS. and the second
FIG. 5 is a data structure diagram of block data, FIG. 5 is a 70-chart of a standby program, and FIG. 6 is a block diagram showing an embodiment of the MCA wireless communication device according to the present invention. The symbol in the figure is antenna, 2 is RF! =, ), 3 is /4
4 is a mixer, 5 is a detector, 6, 1
0 is the audio circuit, 7 is the speaker, 8 is the 7-child input module, 9 is the drive module, 11 is the microphone, 1
2 is the PTT button, 13 is PI, I. circuit, 14 is a code input/output circuit, 15 is a CPU, 16 is an R
OM, 17 is the operation panel, 17 & is the power switch, 18 is the power switch, 19 is the mobile body, 20 is the storage battery, 21 is the generator, 22 is the ignition key, 22a is the first switch, 23 is the power on program, 24 is a C channel acquisition program, 26 is a standby program, 25.
27.28, 29゜30.31.32 is difficult to judge,
33 to 36 are processing, 37 is a D flip-flop, 38 is an AND circuit, 39 is a driver, 4o is a second switch, 41 is a second power supply, and 42 is a diode.

Claims (1)

[Claims] 1. A standby means that receives a frame synchronization signal transmitted from the MCA control station to a mobile subscriber station equipped with an MCA wireless communication device and waits for an incoming call, and a CPU that controls the standby means.
and a first switching means that operates in response to the attachment or detachment of the ignition key of the mobile subscriber station, and a first power source that operates in response to the operation of the first switching means. a second switching means for connecting the CP to the first path, the standby means and the CP;
A second power source used for a second circuit related to UK, and a means for activating the second switching means in response to the incoming call, and the power consumption during standby is reduced according to the attachment or detachment of the ignition key. M characterized by being configured to reduce
CA wireless communication device.