JP2632169B2 - Portable wireless transmitter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an improvement of a wireless transmitter that is carried and used to notify an emergency such as an elderly person, a sick person, or a security guard.

[Background Art] This type of wireless transmitter is used by a sick person, a sleeping elderly person or a security guard to carry it, and generates an emergency signal by a weak radio wave when an emergency occurs for the carrier. is there.

In the conventional wireless transmitter, once the emergency switch is operated, the emergency signal is continuously output until the reset switch is operated again.However, when the transmitter body is housed in the holder, periodic transmission is performed. In the normal state, the output of the wireless transmitter is intermittently transmitted at predetermined time intervals, and the receiver monitors the wireless transmitter for abnormalities and battery exhaustion to improve reliability. Has been adopted.

FIG. 14 shows a configuration diagram of a system using a conventionally used portable wireless transmitter. 10 in the figure
0 is a wireless transmitter, 102 is a receiver, 103 is a house information panel.

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 102 receives the emergency signal,
The alarm means incorporated in the housing information panel 103 is activated to notify the occurrence of an abnormal situation.

The wireless transmitter 100 is provided with a house code setting switch for setting a house code and a unit code setting switch for setting a unit code (both not shown), and a house code setting switch is provided on the receiver 102 side. By setting the same house code for the wireless transmitter 100 and the receiver 102, the receiver 102 receives a signal from the wireless transmitter 100 having the same house code. By operating the unit code setting switch, the receiver can determine which wireless transmitter has transmitted the emergency signal.
The decision is made on the 102 side.

FIGS. 15 (a) and 15 (b) show the structure of such a wireless transmitter. A push switch 100a is provided on the surface of the wireless transmitter main body 100, and an emergency signal is generated by operating this switch. Is output. In addition, when the emergency signal is stopped, it is performed by operating a reset switch 100b provided on the back side of the wireless transmitter main body 100. Such a wireless transmitter 100 is provided with a battery case having a cover 100d in a part of the main body 100 as shown in FIG. 16, and accommodates a battery 100e therein, and is detachable in a holder 101. To be housed.

17A and 17B are a perspective view and a front view showing a state where the wireless transmitter 100 is accommodated in the holder 101. FIG.

FIG. 18 is a view for explaining an example of use of a conventional wireless transmitter. When an elderly man m and the like who is sleeping is sleeping on a bed, the wireless transmitter 100 is placed in a holder (not shown) beside the bed. The wireless transmitter 100
The periodic transmission signal from is stopped.

When an elderly person m removes the wireless transmitter 100 from the holder, the wireless transmitter 100 outputs a periodic transmission signal intermittently, and an emergency occurs when the user is moving away from the bed while carrying the wireless transmitter. Then, by operating the push switch 100a of the wireless transmitter 100, an emergency signal is transmitted, the emergency signal is received by the receiver 102, and an alarm is issued from the house information panel 103.

However, in such a security wireless system, when the elderly person m goes out of the transmission area, enters a radio wave null point, or interferes with noise or the like, the receiver 102 transmits the signal from the wireless transmitter 100. It goes without saying that the regular transmission signal cannot be detected, but the transmission of the periodic signal is performed when the main body 100 is removed from the holder 101 and the function as an emergency transmitter being carried is most required. However, a configuration designed to improve reliability is not functioning sufficiently.

By the way, in order to solve such an inconvenience, a system in which a controller periodically calls a transmitter by a bidirectional transmission function and confirms the presence or absence of a transmission trouble or a device abnormality is conceivable. However, in such a system, a reception function is further added to the wireless transmitter, so that not only the cost is increased but also the communication characteristics (in particular, the receiving antenna cannot be increased, so that sufficient sensitivity cannot be obtained). ) Is also greater, making it unsuitable for portable use.

Further, in the wireless transmitter having the above-described configuration, a regular transmission signal is always output while the wireless transmitter 100 is taken out of the holder 101, and is usually stored in the holder compared to the time of carrying. Therefore, it is necessary to incorporate a large-capacity battery for outputting a periodic transmission signal in the main body of the wireless transmitter, and the external shape is actually large.

[Object of the Invention] The present invention has been developed to solve the above-mentioned problems, and has as its object to provide a small-sized wireless transmitter suitable for portable use with a simple configuration.

DISCLOSURE OF THE INVENTION The present invention proposed to achieve the above object has a transmitter main body provided with a transmission circuit unit having a periodic transmission function and having a battery power supply, and this transmitter main body is detachably housed. In a portable wireless transmitter combined with a holder that performs
The transmitter main body is provided with the mounting to the holder, extraction detection means for detecting and determining the extraction, and power switching means.When the transmitter main body is housed in the holder, the power switching means is Power is supplied to the transmitter main body from a power supply circuit section provided on the holder side, and at this time, the transmitter main body starts periodic transmission by the extraction detecting means, while the transmitter main body is removed from the holder. In some cases, the power supply switching unit cuts off power supply from the power supply circuit unit provided on the holder side to the transmitter main body, and supplies battery power built in the transmitter main body to the transmitter main body. At this time, the transmitter body is configured to stop the periodic transmission by the extraction detecting means.

According to a second aspect of the present invention, the power supply circuit section on the holder side is constituted by a secondary battery constantly charged from an external power supply. Is input via an AC adapter to convert AC power to DC power.

[Embodiment] A main part of an embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a diagram showing a wireless transmitter 1 having a push switch 1a and a holder 2 according to a first embodiment. The wireless transmitter 1 is detachably mounted in a pocket-like receiving portion 21 of the holder 2. The holder 2 accommodates a battery 3 for supplying power when the wireless transmitter 1 is accommodated, and has a battery cover 22 attached thereto.

FIG. 2 is a diagram showing the relationship between the wireless transmitter 1 and the battery supply of the holder 2. In the figure, reference numeral 1c denotes a switch for controlling the output of a periodic transmission signal by contacting the projection 2a at the bottom of the holder 2 when the transmitter body 1 is accommodated in the holder 2, and forming a sampling detection means by 1c. I have. Reference numerals 1d and 1e denote power supply terminals which come into contact with power supply terminals 2b and 2c provided at corresponding locations on the bottom of the holder 2 and receive power supply from the holder 2 side. FIG. 3 is a view of the wireless transmitter 1 as viewed from the back side, in which a reset switch 1b for resetting an emergency signal is provided.

FIG. 7 shows a circuit diagram of a power supply unit of the wireless transmitter having the configuration shown in FIG. 1 is a wireless transmitter main body, 2 is a holder. Since the voltage of the battery B2 in the holder 2 is set higher than the voltage of the battery B1 in the wireless transmitter 1, when the wireless transmitter 1 is accommodated in the holder 2, 1d, 2d, and 1e 2e contacts and power is supplied from the battery B2 to the internal circuit of the wireless transmitter 1 through the diode D2 → the terminal 2d → the terminal 1d → the resistor R1,
When carrying the wireless transmitter 1, the terminals 2d and 1d
Since the space between 2e and 1e is opened, power is supplied to the internal circuit through the battery B1 → the diode D1 inside the wireless transmitter.

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 built-in rechargeable secondary battery 3, and a battery cover 22 is attached. Further, the AC adapter 4 is structured to be attached to the power jack 2f. FIG. 8 shows a power supply circuit diagram of the second embodiment.

Also in the case of the present embodiment, the voltage of the battery B2 in the holder is set higher than that of the battery B1 in the wireless transmitter 1. Therefore, when the wireless transmitter 1 is accommodated in the holder 2, the battery B2 → Diode D2 → Terminal 2d → Terminal 1d →
Power is supplied to the internal circuit of the wireless transmitter 1 through the resistor R1. Also, in this case, when the voltage of the battery B2 in the holder 2 drops to the same voltage as the battery B1 in the wireless transmitter 1, power cannot be supplied from the battery B2, so that power is supplied from the battery B1.

Here, since the battery B2 is a secondary battery, by connecting the AC adapter 4 to the terminal 2f, the AC adapter 4 → the resistor R
2. While the battery B2 is charged through the diode D3, the power of the internal circuit of the wireless transmitter 1 is supplied through the power adapter 4, the resistor R2, the diode D3, the diode D2, the terminal 2d, the terminal 1d, and the resistor R1. The resistors R1 and R2 are both for current limiting.

 FIG. 5 shows a third embodiment.

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

 FIG. 9 shows a circuit diagram of the power supply unit of this embodiment.

When the wireless transmitter 1 is accommodated 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 1d → resistor
Power is supplied to the internal circuit of the wireless transmitter 1 through R1. Note that both 2e and 1e are connected to the ground side.

As shown in FIGS. 1 to 3, when the wireless transmitter main body 1 is housed in the holder 2, the switch 1c constituting the extraction detecting means is pressed by the convex portion 2a of the holder 2. If the periodic transmission signal is not output to the receiver (not shown) due to the periodic transmission signal being output intermittently at a predetermined time interval because it is held, the trouble of the transmitter or the running out of the battery during this period causes The receiver can determine that the wireless transmitter 1 is abnormal and activate an alarm or display the abnormality.

On the other hand, when an elderly or sick person or a security guard who needs nursing removes the wireless transmitter 1 from the holder 2 and moves with it, the pressing by the convex portion 2a of the switch 1c is released. Since it is detected that 1 has been removed from the holder 2 and a periodic transmission stop signal is transmitted to the receiver side, it is no longer determined to be abnormal even if the periodic transmission signal is not received by the receiver. The carrier of the wireless transmitter 1 returns to the holder 2 position, and the holder 2
, The periodic transmission signal is output intermittently again by the detection means 1b (FIG. 6 (a),
(B)).

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

In the drawing, reference numeral A denotes extraction detection means for detecting extraction of the main body 1 from the holder 2, reference numeral 10 denotes a periodic transmission / transmission stop signal generation circuit which operates in response to a signal from the detection means A, and reference numeral 11 denotes an operation switch 1b. Emergency reset signal generation circuit 12 has an emergency signal generation circuit having an operation switch 1a.

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

Here, the timer circuit 13 is operated by a signal transmitted through the OR gate OR3, and outputs a timing pulse at a predetermined time interval set in advance. On the other hand, the one-shot pulse generator 18 performs a one-shot operation every time a trigger signal is input through the OR gate OR1, and the transmission is turned on.
The / OFF circuit 19 is driven.

In the embodiment, the gate circuit unit 22 includes three OR gates OR1.
To OR3 and one inverter INV, which have a wiring relationship as shown in the figure.

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

Also, after the one-shot pulse generator 18, the transmission
An ON / OFF circuit 19 is provided, and the signal code generation circuit 17 and the high-frequency transmission circuit 20 are driven by the transmission ON / OFF circuit 19,
An antenna 21 outputs a radio signal modulated at a predetermined frequency.

The signal transmitted from the wireless transmitter 1 is, for example,
The configuration is as shown in FIG.

In the illustrated example, the code signal is a 6-bit code signal modulated at a predetermined frequency, and such a signal is repeatedly transmitted two to six times each time the one-shot pulse generator 18 performs one-shot operation.

The first bit S1 of this signal defines a unit code, the second to fifth bits S2 to S5 define a house code, and the sixth bit S6 defines a function code.

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

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

f1 to f4 are all different modulation frequencies No. 1 to No. 4 indicate unit code numbers.

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

When the wireless transmitter 1 is accommodated in the holder 2, its state is detected by the detecting means A, and the wireless transmitter 1 is transmitted 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, a signal of "H" level is output from the periodic transmission / transmission stop signal generation circuit 10. Is sent to the timer circuit 13 via the OR gate OR3, and the timer circuit 13 is driven. 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 OR1, and continuously drives the transmission ON / OFF drive circuit 19 intermittently. When the transmission ON / OFF drive circuit 19 is driven, the high frequency transmission circuit 20 is driven according to the signal code generated by the signal code generation circuit 17, and the radio signal modulated at a predetermined frequency from the antenna 21 is intermittently output. Will be sent to

At the receiver, this signal is decoded and the wireless transmitter 1
Is stored in the holder 2. In this state, if the wireless transmitter 1 fails or runs out of battery, the receiver cannot receive the periodic transmission signal (radio signal). For example, when the predetermined number of periodic transmission signals cannot be received. Then, the receiver 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, the state is detected by the detecting means A, and the periodic transmission /
An "L" level signal is output from the transmission stop signal generation circuit 10, a periodic transmission stop signal is output, and thereafter, the periodic transmission is stopped (see FIG. 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 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 rescue signal generation circuit 12 via the OR gate OR3. Is a one-shot pulse generator that outputs a timing signal at predetermined time intervals.
18 is triggered. As a result, the transmission ON / OFF 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 output intermittently and continuously from the antenna 21. The side issues an emergency signal.

When a nurse or the like who hears the emergency signal rushes and operates the emergency reset switch 1c of the wireless transmitter 1, the emergency reset signal generation circuit 11 outputs an "H" level signal. Trigger. The triggered one-shot pulse transmitter 18 drives the transmission ON / OFF circuit 19 and drives the high-frequency transmission circuit 20. At this time, the function switching circuit 14 specifies the emergency reset as a function code. The side detects this and stops the emergency signal. In FIG. 13, C indicates an emergency signal, and R indicates an emergency reset signal.

[Effects of the Invention] According to the wireless transmitter of the present invention, when the wireless transmitter is installed in a holder having a longer time than when it is carried, a periodic transmission is performed by a power supply circuit of the holder, and a built-in battery power supply when the portable is removed from the holder. The periodic transmission has been stopped by.

For this reason, compared to the one that starts regular transmission when in use, the battery power can be reduced, the wireless transmitter can be made smaller and lighter, and the transmission abnormality can be confirmed by the regular transmission during standby. Since it can be used at the time of use, reliability is good.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of a wireless transmitter and a holder according to a first embodiment of the present invention, FIG. 2 is an explanatory view of the wireless transmitter and the bottom of the holder, and FIG. FIG. 4 is an explanatory view of the second embodiment, FIG. 5 is an explanatory view of the third embodiment, FIG. 6 is an explanatory view of a periodic transmission signal and a periodic transmission stop signal, FIG. FIG. 9 to FIG. 9 show the first to third embodiments.
Circuit diagram of the power supply unit of the embodiment, FIG. 10 is an example of a hardware configuration of a wireless transmitter, FIG. 11 is an example diagram of a signal transmitted from the wireless transmitter, FIG. 12 and FIG. 14 is a time chart for explaining the operation, FIG. 14 is a diagram for explaining a conventional wireless system, and FIGS. 15 (a) and (b);
16 and 17 (a) and (b) are explanatory diagrams of a conventional wireless transmitter and a holder, and FIG. 18 is a diagram showing an example of use of the conventional wireless transmitter. [Explanation of Symbols] 1 ... Wireless transmitter 1a ... Press switch 1b ... Reset switch, 1c ... Removal detection means 1d, 1e ... Power supply terminal 2 ... Holder 2a ... Protrusion 2b ... Battery cover 2c ... Battery 2d, 2e ... Power supply terminal 2f ... AC adapter jack 3 ... AC adapter

Claims (3)

(57) [Claims] A portable wireless transmitter in which a transmitter body having a periodic transmission function and provided with a transmitter circuit unit having a battery power supply and a holder for detachably housing the transmitter body are combined. The transmitter main body includes: mounting to the holder; extraction detection means for detecting and determining extraction; and power switching means. When the transmitter main body is housed in the holder, the power switching means. Supplies power to the transmitter main body from a power supply circuit section provided on the holder side.At this time, the transmitter main body starts periodic transmission by the extraction detecting means, while the transmitter main body is supplied from the holder. When detached, the power supply switching means cuts off power supply from the power supply circuit section provided on the holder side to the transmitter body, and The battery power source built in the main body and supplied to the transmitter body, the transmitter body this time, the wireless transmitter Portable configured so as to stop the periodic transmission by the extraction detection means. 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 constantly charged from an external power supply. 3. The portable wireless device according to claim 1, wherein the power supply circuit on the holder side is configured to receive an external commercial AC power supply via an AC adapter and convert the AC power supply to a DC power supply. Transmitter.