JPH01157623A - Portable wireless transmitter - Google Patents

Abstract

PURPOSE:To simplify a constitution and to execute a miniaturization by providing a power source switching means to supply a power source from a power circuit part provided at a holder side to a transmitter main body in giving a priority to the transmitter when the transmitter main body is accommodated in the holder. CONSTITUTION:When the transmitter is accommodated in a holder 2, the power source switching means to supply the power source from the power circuit part provided at the holder side to the transmitter main body in giving the priority to the transmitter is provided. Namely, since, for a battery B2 in the holder 2, a voltage is set to be higher than the voltage of a battery B1 inside a wireless transmitter 1, when the wireless transmitter 1 is accommodated in the holder 2, terminals 1d and 2d and terminals 1e and 2e are brought into contact, and the power source is supplied from the battery B2 through a diode D2 the terminal 2D the terminal 1d a resistance R1 to the internal circuit of the wireless transmitter 1. At the time of carrying the wireless transmitter 1 main body, since connections between terminals 2d and 1d and between 2e and 1e are opened, the power source is supplied through the battery B1 inside the wireless transmitter a diode D1 to the internal circuit. Thus, the wireless transmitter can be miniaturized and lightened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an improvement in a wireless transmitter that is carried and used to notify an emergency situation of an elderly person, a sick person, a security guard, or the like.

[Background Art] This type of wireless transmitter is used when carried by a sick person, a bedridden elderly person, a security guard, etc., and generates an emergency signal using weak radio waves when an emergency situation occurs for the wearer. be.

With conventional wireless transmitters like this, if you operate the -degree emergency switch, the emergency signal will be output continuously until you operate the reset switch again, but when the transmitter body is housed in the holder, the emergency signal will be output periodically. Transmission output is stopped, and under normal conditions, regular transmissions are made intermittently at predetermined time intervals, and the receiver side monitors the wireless transmitter for abnormalities or battery exhaustion, increasing reliability. is taken.

FIG. 14 shows a configuration diagram of a system using a conventionally used portable wireless transmitter.

In the figure, 100 is a wireless transmitter, 102 is a receiver, and 103 is a housing information board.

When the push switch (emergency switch) 100a of the wireless transmitter 100 is operated and an emergency signal is output from the wireless transmitter 100, the receiver 1゜2 receives this emergency signal and transmits the emergency signal built into the housing information board 103. Activate the alarm means to notify the occurrence of an abnormal situation.

This wireless transmitter 100 is internally provided with a house code setting switch for setting a house code and a unit code setting switch (both not shown) for setting a unit code, and a house code setting switch is provided on the receiver 102 side. By setting the house codes of the wireless transmitter 100 and the receiver 102 to be the same, the receiver 102 receives a signal from the wireless transmitter 100 with the same house code. Furthermore, by operating the unit code setting switch, the receiver 1.02 can determine from which wireless transmitter the emergency signal was transmitted.

FIGS. 15(a) and 15(b) show the structure of such a wireless transmitter.
A push switch 100a is provided on the surface, and by operating this, an emergency signal is output. Further, when the emergency signal is to be stopped, it is done by operating the set switch 100b provided on the back side of the wireless transmitter main body 100. Such a wireless transmitter 100 has a main body 1, as shown in FIG. A battery case having a cover 100d is provided in a part of OO, and a battery 100e is housed inside the battery case, and is detachably housed in a holder 101.

FIGS. 17(a) and 17(b) show a perspective view and a front view of the wireless transmitter 100 housed in the holder 101.

FIG. 18 is a diagram illustrating an example of the use of a conventional wireless transmitter. When a bedridden elderly person m or the like is lying on the head, the wireless transmitter 100 is placed in a holder (not shown) next to the head. is housed in the wireless transmitter 1.
The regular transmission signal from 00 has stopped.

When an elderly person (m) takes out the wireless transmitter 100 from the holder, the wireless transmitter 100 intermittently outputs a regular transmission signal, and an emergency situation occurs when the person, such as an elderly person, is carrying the wireless transmitter and moving away from the head. Then, by operating the push switch 100a of the wireless transmitter 100, an emergency signal is transmitted, which is received by the receiver 102, and an alarm is issued from the housing information panel 103.

However, in such a security wireless system, if an elderly person or other person goes out of the transmission area,
Of course, if the radio waves enter a null point or there is interference such as noise, the receiver 102 will not be able to detect the regular transmission signal transmitted from the wireless transmitter 100. is holder 10
The emergency transmitter, which has been removed and carried since 1999, is used when it is most needed, and the configuration that was designed to increase reliability is not functioning satisfactorily. .

By the way, in order to eliminate such inconveniences, a system can be considered in which the controller periodically calls the transmitter using a bidirectional transmission function to check whether there is a transmission trouble or equipment abnormality. However, in such a system, a receiving function is added to the wireless transmitter, which not only increases the cost but also
In terms of communication characteristics (especially since the receiving antenna cannot be enlarged,
This also increases the limitations of the camera (inability to obtain sufficient sensitivity), making it unsuitable for portable use.

In addition, in the wireless transmitter configured as described above, the periodic transmission signal is always output while the wireless transmitter 100 is taken out from the holder 101, and normally the wireless transmitter 100 is housed in the holder less than the time it is carried. The actual situation is that a large-capacity battery for outputting periodic transmission signals needs to be built into the main body of the wireless transmitter, resulting in a large external size.

[Object of the Invention] The present invention was developed to solve the problem of ridges, and an object of the present invention is to provide a small wireless transmitter with a simple configuration and suitable for portable use.

[Disclosure of the Invention] The present invention proposed to achieve the above object includes a transmitter body that has a periodic transmission function and is provided with a transmitter circuit section having an individual power supply, and a transmitter body that is detachable. In a portable wireless transmitter combined with a holder for housing, when the transmitter body is housed in the holder, power is preferentially supplied to the transmitter body from a power circuit section provided on the holder side. This portable wireless transmitter is characterized by being provided with power supply switching means.

Also proposed at the same time is that the power supply circuit section on the boulder side is comprised of a secondary battery that can be charged from an external power source.

Furthermore, the device proposed at the same time is characterized in that the power supply circuit on the holder side is configured to receive external commercial AC power through an AC adapter.

[Embodiment] Hereinafter, main parts of an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a first embodiment, and is a diagram showing a wireless transmitter 1 having a press switch 1a and a holder 2. The holder 2 houses a battery 3 that supplies power when the wireless transmitter 1 is housed, and the battery cover 22
is installed.

FIG. 2 is a diagram showing the power supply relationship between the wireless transmitter 1 and the holder 2. As shown in FIG. In the figure, when the transmitter body 1 is housed in the holder 2, the IC is a switch that comes into contact with the protrusion 2a on the bottom of the holder 2 to control the output of the periodic transmission signal, and the IC and 2a control the output of the periodic transmission signal. is forming. Further, ld and le are power terminals that come into contact with power supply terminals 2b and 2c provided at corresponding locations on the bottom of the holder 2 to receive power supply from the holder 2 side. FIG. 3 is a diagram of the wireless transmitter 1 seen from the back side, and is provided with a reset switch 1b for resetting the emergency signal.

FIG. 7 shows a circuit diagram of the power supply section of the wireless transmitter configured as shown in the figure. ■ is the main body of the wireless transmitter, and 2 is the holder. Since the voltage of the battery B2 inside the holder 2 is set higher than that of the battery B1 inside the wireless transmitter 1, when the wireless transmitter 1 is housed in the holder 2, 1d, 2d, 1e and 20 contacts and connects battery B2 to diode D2 - terminal 2d -> terminal 1d - resistor R
Power is supplied to the internal circuit of the wireless transmitter 1 through 1, but when carrying the main body of the wireless transmitter 1, the terminals 2d and ld and between terminals 2e and le are open, so that the internal circuit of the wireless transmitter is Power is supplied to the internal circuit through the battery B1 and the diode D1.

FIG. 4 shows a second embodiment, in which the wireless transmitter 1 is the same as the first embodiment, but the holder 2 has a rechargeable secondary battery 3 built-in. Battery cover 22 is attached.

Further, the structure is such that the AC adapter 4 is attached to the power jack 2f. A circuit diagram of the power supply section of this second embodiment is shown in FIG.

In this embodiment as well, the voltage of battery B2 in the holder is set higher than the voltage of battery B1 in wireless transmitter 1, so when wireless transmitter 1 is housed in holder 2, battery B2 →Diode D2 - terminal 2d→
Power is supplied to the internal circuit of the wireless transmitter 1 through the terminal 1d and the resistor R1. Furthermore, in this case, if the voltage of battery B2 in holder 2 drops to the same voltage as battery B1 in wireless transmitter 1, power cannot be supplied from battery B2, so power is supplied from battery B1.

Here, battery B2 is a secondary battery, so AC is connected to terminal 2f.
By connecting adapter 4, AC adapter 4 =
Battery B2 is charged through resistor R2 and diode D3, while power adapter 4 - resistor R2 → diode D3 → diode D2 - terminal 2d - terminal 1d - resistor R1
Power is supplied to the internal circuit of the wireless transmitter 1 through the power supply.

Both resistors R1 and R2 are for current limiting.

FIG. 5 shows a third embodiment.

In the figure, the holder 2 is provided with a jack 2f into which an AC adapter 4 is inserted.

A circuit diagram of the power supply section of this embodiment is shown in FIG.

When the wireless transmitter 1 is housed in the holder 2, the voltage of the AC adapter 4 enters the holder 2 through the jack 2f, and the diode D2 - terminal 2d - terminal 1.
Power is supplied to the internal circuit of the wireless oscillator 1 through the d-resistor R1.

Note that both 2e and le are connected to the ground side.

In the wireless transmitter as shown in FIGS. 1 to 3, when the wireless transmitter main body 1 is housed in the holder 2, the switch 1C is pressed and held by the protrusion 2a of the holder 2 by the detection means A. Therefore, the periodic transmission signal is output intermittently at a predetermined time interval, and during this period, the periodic transmission signal is output to the receiver (
(not shown), the receiver side determines that the wireless transmitter 1 is abnormal and can activate an alarm or display the abnormality.

On the other hand, when an elderly person, a sick person, a security guard, or the like who requires nursing care removes the wireless transmitter 1 from the holder 2 and carries it with him/her, the convex portion 2 of the switch 1b of the detection means A
When the pressure by a is released and the detection means A detects that the wireless transmitter 1 has been removed from the holder 2, a periodic transmission stop signal is sent to the receiver side, so that from then on, the periodic transmission signal is received. Even if the signal is not received by the device, it will no longer be judged as abnormal. When the person carrying the wireless transmitter 1 returns to the holder 2 position and stores it in the holder 2, the detection means 1b will again intermittently output a periodic transmission signal (FIG. 6(a)).

(see (b)).

FIG. 10 is a hardware configuration diagram of the wireless transmitter of the present invention.

In the figure, A is a detection means for detecting removal of the main body 1 from the holder 2, 10 is a periodic transmission/transmission stop signal generation circuit that operates upon receiving a signal from the detection means A, and 11
12 shows an emergency signal generation circuit having an operation switch 1b, and 12 an emergency signal generation circuit having an operation switch 1a.

Outputs from these signal generation circuits 10, 11, and 12 are output to the timer circuit 13, one-shot pulse generator 18, and function switching circuit 14 via the gate circuit section 22.

Here, the timer circuit 13 is activated by a signal sent through the OR gate OR3, and outputs timing pulses at predetermined time intervals. On the other hand, the one-shot pulse generator 18 operates to one-shot pulse generator 1 every time a trigger signal is input through the OR gate ORL, and drives the transmission 0N10FF circuit 19.

In the embodiment, the gate circuit section 22 is composed of three OR gates ORI to OR3 and one inverter INV, and these have a wiring relationship as shown in the figure.

The output of the function switching circuit 14 is sent to the signal code generation circuit 17, and the output signals of the unit code setter 15 and the house code setter 16 are inputted to the signal code generation circuit 17.

Further, a transmission ON10FF circuit 19 is provided at the subsequent stage of the one-shot pulse generator 18.
The 10FF circuit 19 drives the signal code generation circuit 17 and the high frequency transmission circuit 20, and the antenna 21 outputs a radio signal modulated at a predetermined frequency.

The signal transmitted from the wireless transmitter 1 is, for example, a first
The configuration is shown in Figure 1.

On the farm side, it is a 6-bit code signal modulated at a predetermined frequency, and such a signal is repeatedly transmitted 2 to 6 times for each one-shot operation of the one-shot pulse generator 18.

The first bit S1 of this signal defines the unit code, the second bit 32 to the fifth bit 1-35 define the house code, and the sixth bit S6 defines the function code.

The function code is assigned a modulation frequency according to a control mode regulation signal (in the embodiment, a regular transmission/transmission stop signal, an emergency signal, and an emergency reset signal) output from the three signal generation circuits 10 to 12.

Table 1 shows an example of frequency allocation of code signals transmitted by the wireless transmitter 1.

Table 1 r1 to f4 are all different modulation frequencies pJo.

1 to N004 indicate unit code numbers.

Next, the operation of the wireless transmitter 1 will be explained with reference to FIG.

When the wireless transmitter 1 is housed in the holder 2, its state is detected by the detection means A, and the wireless transmitter 1 is detected by the periodic transmission/transmission stop signal generation circuit 10.
outputs a periodic transmission signal at predetermined time intervals.

That is, in FIG. 10, when the detection means A detects that the wireless transmitter 1 is housed in the holder 2, the periodic transmission/transmission stop signal generation circuit IO outputs r.
The HJ level signal is output and sent to the timer circuit 13 via the OR gate OR3, thereby driving the timer circuit 13. As a result, the one-shot pulse generator 18 is driven by a trigger signal output from the timer circuit 13 at predetermined time intervals via the OR gate ORI, and drives the transmission 0N10FF drive circuit 19 intermittently and continuously.

When the transmission 0N10FF drive circuit 19 is driven, it drives the high frequency oscillation circuit 20 according to the signal code generated by the signal code generation circuit 17, and the antenna 21 intermittently transmits a radio wave signal modulated at a predetermined frequency. be done.

The receiver decodes this signal and determines that the wireless transmitter 1 is housed in the holder 2. In this state, if the wireless transmitter 1 malfunctions or the battery runs out, the receiver will not be able to receive periodic transmission signals (radio signals), so for example, if a predetermined number of periodic transmission signals cannot be received, Then, the receiver side determines that there is an abnormality and generates an alarm signal (see Fig. 12).

When the wireless transmitter 1 is removed from the holder 2, its state is detected by the detection means A, and the periodic transmission/transmission stop signal generation circuit 10 outputs an "L" level signal, and the periodic transmission stop signal is output. will be output, and from then on, regular transmissions will be stopped (see Figure 6).

FIG. 13 is a diagram for explaining the operation of the wireless transmitter 1 in an emergency, and shows the operation when an emergency situation occurs while the wireless transmitter 1 is being carried.

When the push switch 1a of the wireless transmitter 1 is operated, the timer circuit 13 is driven by the signal (“H” level) output from the emergency signal generation circuit 12 via the OR game (OR game) OR3. A timing signal at a predetermined time interval is outputted from , and the one-shot pulse generator 18 is triggered. As a result, transmission 0N10
The FF circuit 19 drives the signal code generation circuit 17 and the high frequency transmission circuit 20, and the radio signal carrying the emergency signal is intermittently and continuously output from the antenna 21, so that the receiver side emits the emergency signal. .

When a nurse or the like who has opened this emergency signal rushes and operates the emergency Sesotosuinch IC of the wireless transmitter 1, the emergency reset signal generation circuit 11 outputs the rHJ level signal, so the one-shot pulse generator 1B is activated. trigger. Triggered one-shot pulse generator 18
drives the transmit 0N10 F Flijl path 19;
The high frequency oscillation circuit 2° is driven, but at this time the function switching circuit 14 specifies emergency reset as the function code.
The receiver 2 side detects this and stops the emergency signal. C in FIG. 13 indicates an emergency signal, and R indicates an emergency reset signal.

[Effects of the Invention] As described above, the wireless transmitter of the present invention outputs a periodic transmission signal while housed in the holder, so in this state, power is not supplied to the wireless transmitter from the power supply on the boulder side. will be supplied. Therefore, the power supply inside the wireless transmitter is used only when transmitting emergency signals and emergency reset signals when carried, and the low power consumption makes it possible to use a small battery, resulting in wireless transmission. The device can be made small and lightweight.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the wireless transmitter and holder according to the first embodiment of the present invention, Fig. 2 is an explanatory diagram of the wire 1/s transmitter and the bottom of the holder, and Fig. 3 is an explanatory diagram of the wireless transmitter from the back side. Fig. 4 is an explanatory diagram of the second embodiment, Fig. 5 is an explanatory diagram of the third embodiment, Fig. 6 is an explanatory diagram of the regular transmission signal and the regular transmission cancellation signal, and Figs. 7 to 9 The figures are circuit diagrams of the power supply section of the first to third embodiments, FIG. 10 is a side line of the hardware configuration of the wireless transmitter, FIG. 11 is a side line of the signal transmitted from the wireless transmitter, and FIGS. Figure 13 is a time chart explaining the operation of the wireless transmitter, Figure 14.
The figure is a diagram explaining a conventional wireless system, Figure 15 (
Figures 16 and 17 (a) and (b) are explanatory diagrams of a conventional wireless transmitter and holder, and Figure 18 is a diagram showing an example of use of the conventional wireless transmitter. [Explanation of symbols] 1... Wireless transmitter 1a... Press switch 1b... Removal detection means 1c... Reset switch 1d, 1e... Power terminal 2... Holder 2a... Convex portion 2b... ...Battery cover 2C...Batteries 2d, 2e...Power terminal 2f...AC adapter jack 3...AC adapter

Claims (3)

[Claims] (1) A portable wireless transmitter that combines a transmitter body that has a periodic transmission function and is equipped with a transmitter circuit section with a separate power supply, and a holder that removably houses the transmitter body. When the transmitter body is housed in the holder, a portable wireless transmitter is provided with a power supply switching means for preferentially supplying power to the transmitter body from a power circuit section provided on the holder side. vessel. (2) The portable wireless transmitter according to claim 1, wherein the power supply circuit section on the holder side is constituted by a secondary battery that can be charged from an external power source. (3) The portable wireless transmitter according to claim 1, wherein the power supply circuit on the holder side receives external commercial AC power through an AC adapter.