JPH01157622A - Portable wireless transmitter - Google Patents

Abstract

PURPOSE:To improve a reliability with a simple constitution by stopping the output of a periodic transmitting signal to be intermittently transmitted when a transmitter main body is accommodated in a holder, when the extraction of the main body is detected. CONSTITUTION:Since a switch 1d is press-held by a projecting part 21 when a wireless transmitter 1 main body is accommodated in a holder 2, the periodic transmitting signal is intermittently outputted at a prescribed time interval, and when the periodic transmitting signal does not reach a receiver meanwhile, the wireless transmitter 1 is judged to be abnormal at a receiver side, and an alarm is operated. On the other hand, when the wireless transmitter 1 is extracted from the holder 2 and a movement is executed in carrying it, the pressing of the switch 1d by the projecting part 21 is canceled, that the wireless transmitter 1 is extracted from the holder 2 is detected by a detecting means A, a periodic transmission stopping signal is transmitted to the receiver side, and thereby, the abnormality cannot be judged even when the periodic transmitting signal is not received by the receiver, thereafter. Thus, the equipment abnormality, etc., can be detected with a very high probability.

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 emergency switch, the emergency signal will be output continuously until you operate the reset switch again, but when the transmitter is housed in the holder, it will not send periodic signals. Under normal conditions, the wireless transmitter is configured to make periodic calls intermittently at predetermined time intervals, and the receiver side monitors the wireless transmitter for abnormalities or battery exhaustion to increase reliability. It is taken.

FIG. 9 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 press 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 this emergency signal and activates the alarm means built in the housing information board 103. to notify the occurrence of an abnormal situation.

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

10u (a) and (b) show the structure of such a wireless transmitter. A press switch 100a is provided on the surface of the wireless transmitter main body 100, and by operating this, an emergency signal is output. be done. Further, when the emergency signal is to be stopped, it is done by operating the center switch 100b provided on the back side of the wireless transmitter main body 100.

FIGS. 11(a) and 11(b) show the wireless transmitter 10
0 is shown in a perspective view and a front view showing a state where 0 is housed in a holder 101.

FIG. 12 is a diagram illustrating an example of the use of a conventional wireless transmitter. When a bedridden elderly person m or the like is sleeping on a bed, the wireless transmitter 100 is placed in a holder (not shown) beside the bed. 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 board 103.

However, in such a securityless 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 from the vehicle and carried around, is used when it is most needed, and the configuration, which was designed to improve reliability, is not functioning satisfactorily.

By the way, in order to eliminate such inconveniences, a system can be considered in which a controller periodically calls a transmitter using a bidirectional transmission function to check for transmission troubles or equipment abnormalities. However, in such a system, a receiving function is added to the wireless transmitter, which not only increases costs but also improves communication characteristics (in particular, the receiving antenna cannot be made large, making it difficult to obtain sufficient sensitivity). ), which makes it unsuitable for portable use.

[Object of the Invention] The present invention was developed to solve the above-mentioned problems, and an object of the present invention is to provide a highly reliable wireless transmitter with a relatively simple configuration.

[Disclosure of the Invention] The present invention proposed to achieve the above object includes a wireless transmitter main body that has a periodic transmission function and is provided with a transmitter circuit section having an individual power source, and a wireless transmitter main body that is detachable. In a portable wireless transmitter combined with a holder that can accommodate the transmitter, a detection means is provided on the transmitter body side for detecting removal of the main body from the holder, and the detection means detects removal of the main body. When the transmitter body is placed in the holder, the transmitter body transmits a periodic transmission stop signal and stops outputting the periodic transmission signal that was intermittently transmitted when the transmitter body was housed in the holder. This is a patented wireless transmitter that is characterized by:

[Example] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a wireless transmitter 1 together with a holder 2 that removably houses the wireless transmitter 1, and FIG. 1a and FIG. 1b show the wireless transmitter from the front and back, respectively. This is a diagram. As shown in these figures, a protrusion 21 is provided inside the holder 2, and the protrusion 21 is provided at the bottom of the wireless transmitter main body 1.
A detection means A is provided for detecting contact with the transmitter body 1 and detecting removal of the transmitter body 1 from the holder 2. This detection means A is provided with a hole IC in which the convex part 21 is inserted at a location corresponding to the convex part 21 of the holder 2, and when the convex part 21 is inserted into the hole IC, a switch 1d provided in the main body 1 is pressed by a convex portion 21, and the main body 1 is pressed against the holder 2.
When the switch 1d is housed in the holder 2, the switch 1d is pressed and held by the protrusion 21, and when the main body 1 is removed from the holder 2, the removal of the main body 1 from the holder 2 is detected by releasing the pressure. It is structured as follows.

In the present invention, when the wireless transmitter main body 1 is housed in the holder 2, the switch 1d is connected to the convex portion 2.
1, the periodic transmission signal is output intermittently at predetermined time intervals, and during this period, the periodic transmission signal may not reach the receiver (not shown) due to trouble with the transmitter or battery exhaustion. If not, use wireless transmitter 1 on the receiver side.
It is possible to determine that something is abnormal, 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 or her, the pressure from the protrusion 21 of the switch 1d is released and the detection means A detects the wireless transmitter. Since it is detected that the transmitter 1 is removed from the holder 2 and a regular transmission stop signal is transmitted to the receiver side, it is no longer judged as abnormal even if the regular transmission signal is not received by the receiver. When the person carrying the wireless transmitter 1 returns to the holder 2 position and stores it in the holder 2, the detection means A will again intermittently output a periodic transmission signal (Fig. 2 (a), (b)). reference).

FIG. 3 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 reset 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 outputted to a timer circuit 13, a one-shot pulse generator 18, and a function switching circuit 14 via a 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 performs a one-shot operation every time a trigger signal is input via the OR gate ORI, and drives the transmission 0N10FF circuit 19.

In the embodiment, the gate circuit section 22 includes three OR gates O
It is composed of R1 to R3 and one impark IN, 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 fourth
The configuration is shown in the figure.

The line drawing 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 J8.

The first bit S1 of this signal defines the unit code, the second bit 32 to the fifth bit s5 define the house code, and the sixth bit s6 defines the function code.

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

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

(Margin below) Table 1 f1 to f4 are all different modulation frequencies, No.

1 to No. 3 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. 3, when the detection means A detects that the wireless transmitter 1 is housed in the holder 2, the regular transmission/transmission stop signal light main circuit 10 emits rH.
The J level 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:
It 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 0N10FF drive circuit 19 intermittently. Transmission 0N10FF drive times ii! When 819 is driven, a high frequency transmission diagram 820 is driven in accordance with the signal code generated by the signal code generation circuit 17, and a radio wave signal modulated at a predetermined frequency is intermittently transmitted from the antenna 21.

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 Figure 5).

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. The periodic transmission will be stopped from then on (see Figure 2).

FIG. 6 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 press switch a 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 OR3, so the timer circuit 13 outputs a timing signal at a predetermined time interval, and a one-shot pulse generator 18 is triggered. As a result, send ○N10
The F F 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 does not receive the emergency signal. emanate.

When a nurse or the like who hears this emergency signal rushes over and operates the emergency Sesoto Inch IC of the wireless transmitter 1, the emergency reset signal generation circuit 11 outputs an "H" level signal, so the one-shot pulse generator Trigger 18. Triggered one-shot pulse generator 18
drives the transmission 0N10FF circuit] 9 and drives the high frequency oscillation circuit 20, but at this time, the function switching circuit 14 specifies emergency reset as the function code, so the receiver 2 side detects this and sends an emergency signal. It will be suspended. In FIG. 6, C indicates an emergency signal, and R indicates an emergency reset signal.

Other specific examples of the detection means of the present invention will be explained below with reference to the drawings.

FIG. 7 shows a second embodiment, in which a metal piece 22 with two protrusions 22a and 22b is provided on the bottom of the holder 2.

22b contacts the internal contacts through two openings 1e and 1f provided at corresponding locations on the bottom of the wireless transmitter 1, and this metal piece 22 establishes conduction between the internal contacts of the wireless transmitter 1. Removal from the holder and insertion are detected by non-conductivity.

FIG. 8 shows a third embodiment, in which a magnet 23 is provided at the bottom of the holder 2, and a reed switch 1g is provided at a corresponding location on the bottom of the "wireless transmitter" that comes into contact with the magnet 23. The wireless transmitter 1 is housed in the holder 2, and the magnet 23 is a reed switch 1g.
When the reed switch 1g approaches rONJ, it is detected that the wireless transmitter 1 is housed in the holder 2. In this third embodiment, when the main body of the wireless transmitter 1 is made of a molded product or the like, there is an advantage that insertion into and removal from the holder 2 can be detected without particularly providing an opening.

As another example of the present invention, for example, a light emitting element such as an LED driven by an external power source is provided on the holder side, and an opening and a light receiving element are provided on the wireless transmitter 1 side, so that the wireless transmitter 1 can be connected to the holder 2. It is also possible to perform detection by utilizing the fact that the light-receiving element is driven when the light-receiving element is housed in the holder 2 and is not driven when it is pulled out from the holder 2.

Furthermore, in the above embodiment, the detection switch is turned on when the wireless transmitter 1 is housed in the holder 2, but depending on the type of switch, etc. It goes without saying that it is also possible to adopt a configuration such that rOFFJ.

[Effects of the Invention] According to the present invention, it is possible to detect with a very high probability an abnormality in a wireless transmitter, which is characterized in that it is housed in a holder most of the time when it is in use. Additionally, since regular transmissions are only made when the wireless transmitter is housed in the holder, a small and low-capacity battery built into the wireless transmitter is sufficient, making it even more convenient to carry. A compact wireless transmitter can be realized.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the wireless transmitter and boulder of the present invention, FIG. 1a and FIG. 1b are explanatory diagrams of the front and back sides of the wireless transmitter, respectively, and FIG. 2(a). (b) is a time chart explaining the present invention in detail, the third
The figure shows an example of the hardware configuration of the wireless transmitter of the present invention.
FIG. 4 is a side line of the signal formant transmitted from the wireless transmitter, FIGS. 5 and 6 are time charts explaining the operation when using the wireless transmitter of the present invention, and FIG.
FIG. 8 is a diagram showing an example of use of the oscillator of the present invention. [Explanation of symbols] 1...Wireless transmitter 1a...Press switch A...Detection means ■b...Resent switch 2...Holder Fig. 8 (a) ]00 1] (a) (b ) Figure (b)

Claims (1)

[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. A detection means for detecting removal of the main body from the holder is provided on the transmitter main body side, and when the detection means detects removal of the main body, the transmitter main body transmits a periodic transmission stop signal. A portable wireless transmitter is configured to stop outputting a periodic transmission signal that is intermittently transmitted when the transmitter main body is housed in a holder.