JP3580155B2 - Contact input type wireless transmitter and wireless transmission system using the same - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a contact input type wireless transmitter that transmits a wireless signal in response to an input of a contact signal from a wired device, and a wireless transmission system using the transmitter.
[0002]
[Prior art]
Conventionally, a contact input type wireless transmitter that connects a device that outputs a contact signal by wire and transmits a wireless signal indicating the status of the device when a contact signal is input from this device has been used for alarm notification, etc. Used in
[0003]
The wireless transmitter is connected to, for example, a human body detection sensor and transmits a wireless signal when a contact signal is input from the sensor by detecting the human body by the sensor. Upon receiving this signal, the wireless receiver notifies the person at the receiver side that a person has entered by outputting a ringing sound or an alarm sound, or turning on or blinking a lamp or the like.
[0004]
Some contact input type wireless transmitters use a battery as a power source. When a contact signal is input from a device such as a sensor, the transmitter transmits a wireless signal indicating the state of the device. Is transmitted, and if the battery voltage value at this time is equal to or lower than a predetermined voltage value, a battery exhaustion check function of transmitting a wireless signal indicating battery exhaustion is provided.
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional contact input type wireless transmitter, the battery exhaustion check is performed only when a contact signal is input from a connected device and a wireless signal is transmitted, so that there is little opportunity to transmit a signal. If so, the detection of battery exhaustion may be delayed.
[0006]
For example, when using a transmitter connected to a security device, the signal is rarely transmitted, so it is not possible to check for battery exhaustion until the signal is actually transmitted. For the first time, it is known that the battery is almost exhausted, or the battery is exhausted, and there has been a problem that a signal cannot be transmitted.
[0007]
In addition, the voltage value of the battery changes depending on the temperature, but when the time for transmitting the wireless signal is determined, the battery exhaustion check is concentrated in, for example, a daytime when the temperature is higher than the nighttime and the temperature is low. There was also a problem that it was not possible to check for dead batteries at night.
[0008]
The present invention has been made in view of such circumstances, and a contact input type wireless transmitter capable of detecting a dead battery early by periodically performing a dead battery check, and a wireless transmission system using the same. The purpose is to provide.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, claims 1 to 5 of the present invention propose a new configuration of a contact input type wireless transmitter having a battery as a power supply, in which a device for outputting a contact signal is connected by wire. I do.
[0010]
According to the first aspect, a battery voltage is periodically detected, and when the detected voltage value is equal to or lower than a predetermined voltage value, a wireless signal indicating that the battery is dead is transmitted. That is, a battery exhaustion check is performed periodically except when a contact signal from a device is input and a wireless signal indicating the state of the device is transmitted. Here, the devices connected to the contact input type wireless transmitter of the present invention include various sensors and push buttons.
[0011]
In the first aspect, when a contact signal is input from a connected device during the counting of the cycle for detecting the voltage of the battery, the counting is reset and restarted. As a result, a periodical battery exhaustion check is not performed in a short time from the battery exhaustion check when a wireless signal is transmitted when a contact signal is input from a connected device.
[0012]
A second aspect of the present invention is characterized in that, in the first aspect, the cycle of detecting the battery voltage is a cycle in which the time of detecting the battery voltage in one day is shifted every day. As a result, it is possible to automatically check for battery exhaustion in a plurality of time zones at different temperatures.
[0013]
According to a third aspect, in the first or second aspect, there is provided a setting means for presetting a cycle for detecting the voltage of the battery. Thus, the number of checks for battery exhaustion can be adjusted in consideration of the degree of battery consumption.
[0014]
According to a fourth aspect of the present invention, in any one of the first to fourth aspects, when a period for detecting the battery voltage comes, and when a contact signal is input from a connected device, periodic detection of the battery voltage is performed. Is not performed. As a result, the battery exhaustion check operation does not overlap.
[0015]
Claim 5 proposes a wireless transmission system, wherein the contact input type wireless transmitter according to any one of claims 1 to 5 and a signal indicating that the battery has run out are received from the wireless transmitter. And a wireless receiver for notifying that the transmitter battery is dead.
[0016]
Here, when receiving a wireless signal, the receiver outputs a warning sound indicating that the battery has run out, a wireless call receiver that indicates that the battery has run out with a lamp or text, or a wired connection. There is a contact output type wireless receiver that outputs a contact signal to a device and operates the device.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 is a block diagram showing an example of an internal configuration of a contact input type wireless transmitter according to the present invention.
[0019]
In the figure, reference numeral 10 denotes a CPU or the like, a signal processing unit that controls each unit, 11 denotes a battery as a power supply, 12 denotes a terminal input unit that forms a connection unit that connects a device that outputs contact signals by wire, and 13 denotes an operation A mode switching unit constituted by a switch or the like; an ID writing unit 14 constituted by an EEPROM or the like for writing an ID code assigned to the transmitter 1; and a setting means 15 for setting a cycle of a battery exhaustion check described later in advance , A channel setting unit for setting a channel for wireless transmission, 17 a display unit including a liquid crystal display or an LED lamp, 18 an antenna for transmitting a wireless signal, and 19 a radio The transmission unit 20 is a VCO that controls the transmission frequency, and 21 is a PLLIC that is a phase control circuit of the VCO 20.
[0020]
Further, the transmitter 1 has a main clock C1 (for example, 3.6864 MHz) for normal operation of the signal processing unit 10, and a sub clock which is an operation clock in a stop mode for suppressing power consumption during standby of the signal processing unit 10. C2 (for example, 32.768 MHz) and a reference clock C3 (for example, 12.8 MHz) for generating the frequency of the wireless signal.
[0021]
In the wireless transmitter 1, when a signal signal is input from a terminal input unit 12 to a contact signal from a wired device, the signal processing unit 10 generates a wireless signal indicating the state of the device and transmits this signal to a wireless device. Data is transmitted from the transmitting unit 19 through the antenna 18. An ID code read from the ID writing unit 14 is added to the transmitted signal, and the signal is transmitted by the wireless transmission unit 19 whose oscillation is controlled by the VCO 20. When the wireless signal is transmitted, the display unit 17 displays the transmission and the content of the transmission.
[0022]
Various types of devices can be connected to the transmitter 1 as devices that output a contact signal. Therefore, the connected device outputs a signal indicating that a contact has changed from the connected device. Whether a contact a (make contact) indicating that the contact is closed or a contact b (break contact) indicating that the contact is opened can be set by a switch means (not shown). I have. In addition, there are devices to be connected to which perform a no-voltage contact input or a voltage contact input, and these can be set by the same switch means.
[0023]
The contact input type wireless transmitter 1 checks the voltage value of the battery 11 at the time of transmitting a wireless signal. If the voltage value of the battery 11 is lower than a predetermined voltage value, the battery is almost exhausted. Transmit a wireless signal indicating that
[0024]
According to the present invention, the voltage of the battery 11 is detected periodically (periodically), and when the detected voltage value is equal to or less than the predetermined voltage value, a wireless signal indicating that the battery is dead is transmitted. I do. That is, a battery exhaustion check is performed periodically except when a contact signal is input from a device and a wireless signal indicating the state of the device is transmitted.
[0025]
In this way, even when a device with a small input of a contact signal is connected, the battery exhaustion check is performed periodically, so that the battery exhaustion can be detected before the signal is actually transmitted. Therefore, when the signal is actually transmitted, the battery is not exhausted and the signal cannot be transmitted.
[0026]
The battery exhaustion check is performed by applying the same current (dummy current) as when transmitting the wireless signal and determining the voltage value at that time. That is, the state is the same as when the contact signal is input, but the wireless signal is not transmitted or displayed on the display unit 17.
[0027]
Next, FIG. 2 shows a configuration of a wireless transmission system using the contact input type wireless transmitter 1 described above.
[0028]
On the transmitter side, for example, there are configurations shown in (a) to (e). Devices connected to the transmitter 1 include various sensors such as a machine tool abnormality detection switch shown in (a), a security switch shown in (b), a human body detection sensor shown in (c), and (d). There are various push buttons for calling and the like shown in FIG. 7 and a transfer output switch of a mouse trap shown in FIG.
[0029]
The contact signal is, as described above, a signal indicating that the contact has changed. In other words, when the connected device is the abnormality detection switch of (a), it is detected that the abnormality has been detected. In the case of the security switch of (b), it indicates an alarm state and a non-alarm state, and in the case of the sensor of (c), it indicates a state where an object is detected and a state where it is not detected, In the case of the push button of (d), it indicates the state in which the button is pressed and in the state of not being pressed, and in the case of the transfer output switch of the mouse trap of (e), it indicates the state in which the mouse is caught and not caught. Also.
[0030]
On the other hand, a wireless call receiver 2A (see (f)) that outputs a ringing tone, a warning tone, or the like when a wireless signal is received, or turns on or blinks a display window according to the content of the signal. , Installed in a restaurant, etc., receives a signal transmitted from a wireless transmitter (not shown) installed in each table, outputs a ringing tone, and displays a table number and the like in a window assigned to the transmitter. A wireless service call receiver 2B (see (g)) that receives a signal from the transmitter 1 and outputs a ringing tone when a visitor is detected, and a signal from the transmitter 1 There is a contact output type wireless receiver 2C (see (h)) that outputs a contact signal to a wired device and operates the device. The devices connected to the receiver 2C include a lighting control relay, a buzzer, a security camera, and the like.
[0031]
In the present invention, when each of the receivers 2A, 2B, and 2C receives a signal indicating that the battery has run out from the contact input type wireless transmitter 1, the receiver 2A, 2B, and 2C are notified of the battery running out of the transmitter 1 by sound or display. Therefore, a person on the receiver 2A, 2B, 2C side may replace the battery 11 of the transmitter 1.
[0032]
As described above, in the contact input type wireless transmitter 1 of the present invention, the battery exhaustion check is periodically performed. The period for detecting the voltage of the battery 11 can be set to a cycle that shifts every day.
[0033]
Specifically, the period for detecting the voltage of the battery 11 is set to, for example, a period of time that cannot be divisible by 24 hours so that the times at which the voltage of the battery 11 is detected in a predetermined period unit are not the same. That is, in consideration of the number of checks and the time width shifted every day, a time other than 1, 2, 3, 4, 6, 8, and 12 hours is set as the cycle time.
[0034]
FIG. 3 shows an example of a cycle in such a case. Here, (b) a battery exhaustion check operation is performed every 11 hours, and (a) a battery cycle check operation is performed twice in one cycle. If the cycle is every 11 hours, the check time is shifted by two hours a day. Therefore, as shown in FIG. The result of the battery exhaustion check can be obtained.
[0035]
As a result, even when the time at which the wireless signal is transmitted is determined, the battery exhaustion check can be performed in a one-day cycle in a distributed manner, so that the battery exhaustion check according to a change in temperature can be automatically performed. In particular, even when the temperature falls the most, such as in the early morning of winter, you can check for battery exhaustion.
[0036]
In the figure, the cycle of the battery exhaustion check is set to 11 hours. However, this is merely an example, and may be any cycle in which the check time is shifted every day. For example, the cycle may be set to 13 hours, or , 23 hours, the battery may be checked once a day. Further, the cycle need not be a unit of time, but may be a unit of minute such as a cycle of 11 hours and 30 minutes.
[0037]
The battery exhaustion check also operates in the following cycle.
[0038]
FIG. 4 shows a case in which, when a contact signal is input (sensor input) from a connected device during the counting of the cycle T for detecting the voltage of the battery 11, the counting is reset and then restarted. . As a result, since a contact signal is input from a connected device and a periodic battery exhaustion check is not performed in a short time from a battery exhaustion check when a wireless signal is transmitted, the battery 11 is consumed. Can be suppressed.
[0039]
On the other hand, FIG. 5 shows a case in which the battery exhaustion check operation is performed according to a predetermined cycle T regardless of the sensor input. With this operation, when the operation shown in FIG. 4 is performed, if the sensor input is concentrated at a specific time, the battery exhaustion check is performed at the same time every day, but such an operation does not occur.
[0040]
In both the operations shown in FIGS. 4 and 5, when the voltage of the battery 11 is detected and a contact signal is input from a connected device, the periodic detection of the battery voltage is performed. Not to be. As a result, the battery exhaustion check operation does not overlap.
[0041]
Next, FIG. 6 shows the relationship between the setting of the battery exhaustion check cycle and the consumption of the battery and the number of checks.
[0042]
The cycle T for detecting the voltage of the battery 11 is set in advance by the dead battery check cycle setting unit 15. Here, in addition to the time period T itself, the operations shown in FIGS. 4 and 5 can be set together. The operation in FIG. 4 is referred to as “battery exhaustion check specification 1”, and the operation in FIG. 5 is referred to as “battery exhaustion check specification 2”.
[0043]
As shown in FIG. 6A, when the cycle T is set to be relatively short, the number of checks increases, and the degree of consumption of the battery 11 increases, but the contact input type wireless transmitter 1 and the wireless transmission system do not. Reliability increases. On the other hand, when the period T is set relatively long as in (2) of FIG. 6, the number of checks is reduced, and the reliability of the transmitter 1 and the system is reduced, but the degree of consumption of the battery 11 is reduced. .
[0044]
When the battery exhaustion check specification 1 is set as shown in (3) of FIG. 6, the count of the period T is reset by the input of the contact signal. And the reliability of the system is reduced, but the degree of consumption of the battery 11 is reduced. On the other hand, when the battery exhaustion check specification 2 is set as shown in FIG. 6 (4), the exhaustion check is performed periodically regardless of the input of the contact signal. In comparison, the number of checks increases and the degree of consumption of the battery 11 increases, but the reliability of the transmitter 1 and the system increases.
[0045]
As described above, in the contact input type wireless transmitter 1, the battery exhaustion check cycle setting unit 15 can adjust the number of checks for battery exhaustion per predetermined period in consideration of the degree of battery exhaustion.
[0046]
【The invention's effect】
As can be understood from the above description, in the contact input type wireless transmitter according to claims 1 to 4 of the present invention, if the voltage of the battery is detected periodically and it is detected that the battery is almost exhausted, Since the wireless signal indicating that the battery has run out is transmitted, the battery running out can be checked even when a contact signal is input from a wired device, and the reliability of the transmitter and the system is improved.
[0047]
In other words, even when a device with a small input of a contact signal is connected, the battery exhaustion check is performed periodically, so that the battery exhaustion can be detected before the signal is actually transmitted. Therefore, when the signal is actually transmitted, a situation in which the battery cannot be transmitted and the signal cannot be transmitted does not occur.
[0048]
According to the first aspect, when a contact signal is input from a connected device while the period of the battery exhaustion check is being counted, the count is reset and the counting is restarted. Since the battery is not exhausted when the signal is transmitted, the battery is not periodically exhausted during a short time, so that the battery consumption can be suppressed.
[0049]
According to claim 2, the period of detecting the voltage of the battery is such that the time of detecting the voltage of the battery in one day is shifted every day. Is determined, and even when the time at which the wireless signal is transmitted is determined, the battery exhaustion check can be performed in a distributed manner in a one-day cycle. Therefore, it is possible to automatically check for battery exhaustion according to a change in temperature.
[0050]
Further, in the third aspect, the cycle of the battery exhaustion check can be set in advance, so that the number of battery exhaustion checks can be adjusted in consideration of the degree of battery consumption.
[0051]
According to the fourth aspect, when a contact signal is input from a connected device at the same time when the dead battery check cycle is reached, the periodic dead battery check is not performed, so that the dead battery check operations do not overlap. .
[0052]
In the wireless transmission system according to the fifth aspect, when the wireless receiver receives a signal indicating a dead battery from a transmitter that also periodically checks for a dead battery, the wireless receiver notifies the transmitter that the battery is dead. On the device side, measures such as replacing the battery of the transmitter can be taken.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of the configuration of a contact input type wireless transmitter according to the present invention.
FIG. 2 is a diagram illustrating an example of a configuration of a wireless transmission system according to the present invention.
FIG. 3 is a diagram illustrating a cycle of a battery exhaustion check.
FIG. 4 is a diagram showing an example of a cycle of a battery exhaustion check.
FIG. 5 is a diagram showing another example of the cycle of the battery exhaustion check.
FIG. 6 is a diagram showing the relationship between the setting of a battery exhaustion check cycle, battery consumption, and the number of checks.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Contact input type wireless transmitter 10 Signal processing part 11 Battery 12 Terminal input part (connection part)
13 Mode switching unit 15 Battery exhaustion check period setting unit 2A Wireless call receiver 2B Wireless service call receiver 2C Contact output type wireless receiver T Battery exhaustion check period

Claims (5)

A connection unit for wiredly connecting a device that outputs a contact signal, and a battery as a power supply, and when a contact signal from the device is input, transmits a wireless signal indicating the state of the device, and at this time, If the voltage value of the battery is equal to or less than a predetermined voltage value, in a contact input type wireless transmitter configured to transmit a wireless signal indicating battery exhaustion,
The battery voltage is periodically detected, and when the detected voltage value is equal to or less than the predetermined voltage value, a wireless signal indicating that the battery is dead is transmitted,
A contact input wireless transmitter characterized in that when a contact signal is input from the connected device during counting of the battery voltage detection cycle, the count is reset and restarted. The contact input type wireless transmission according to claim 1, wherein the cycle of detecting the battery voltage is a cycle in which the time of detecting the battery voltage in one day is shifted every day. vessel. The contact-input wireless transmitter according to claim 1, further comprising a setting unit configured to preset a cycle for detecting the voltage of the battery. The periodic battery voltage detection is not performed when a contact signal is input from the connected device when a cycle for detecting the battery voltage comes. 3. The contact-input-type wireless transmitter according to any one of 3. A contact input type wireless transmitter according to any one of claims 1 to 4, and a wireless receiver which, when receiving a signal indicating battery exhaustion from the wireless transmitter, notifies the transmitter of battery exhaustion. Wireless transmission system composed of:

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