JPH0449837B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a data transmitter equipped with a transmitting circuit unit that creates a set of data signals from time-series signals in which a plurality of raw data signals are connected in series and transmits the data signals to a receiver. It is related to the transmitter.

[Background Art] Generally, this type of data transmitter creates a set of data signals using a time series signal that is a series of multiple raw data signals, and transmits a radio signal in which a carrier wave is modulated by the data signal to a receiver. is configured to do so. The data transmitter is equipped with a switch that reverses its open/closed state only during operation, and a data signal is generated only while the switch is in the on state, allowing the receiving side to know that the switch is in the on state. Because transmission requires at least one set of data signals to be transmitted, the switch must be held on for the time required for one set of data signals to be transmitted. By the way, since the data transmitter and receiver are placed apart, it is impossible for the data transmitter to confirm whether or not the data has been received.For this reason, in conventional data transmitters,
By specifying in advance a time during which one set of data signals can be reliably transmitted, and turning on a switch for the specified time, at least one set of data signals is transmitted to the receiving side. However, since this specified time is generally 100 to 150 msec,
In reality, it is difficult for the user to turn on the switch at the specified time, and the time it takes to turn on the switch is sometimes longer or shorter than the specified time. In particular, if the time the switch is turned on is shorter than the designated time, a problem arises in that predetermined data is not transmitted even though the switch is operated.

[Object of the Invention] The present invention has been made in view of the above points, and its main purpose is to generate a confirmation sound when a set of data signals has been transmitted. To provide a data transmitter that notifies a user of the completion of data signal transmission and enables reliable transmission of a set of data signals.

[Disclosure of the Invention] A data transmitter according to the present invention includes a transmitting circuit unit that creates a set of data signals from a time-series signal obtained by connecting a plurality of raw data signals in series, and transmits the data signal to a receiver; Controls the transmitting circuit so that it starts supplying power to the transmitting circuit and generates a data signal when the switch whose open/closed state is reversed starts supplying power to the transmitting circuit, and stops supplying power to the transmitting circuit after a certain period of time after the end of the switch operation. and a confirmation sound generation circuit section that generates a confirmation sound to notify the end of a set of data signals in synchronization with the last raw data signal among the raw data signals constituting the set of data signals. and.

By employing the above configuration, power is supplied to the transmission control circuit section for the total time from the start of the switch operation to the end of the operation and a certain period of time after the end of the operation. In other words, since the transmission control circuit operates only for a limited time, power consumption can be extremely reduced, and even if batteries are used as a power source, there is no need to replace batteries over a long period of time. It is. Also,
Since a data signal that is a chronological concatenation of raw data is generated within a limited time, in some cases a set of data signals cannot be generated within the limited time and the data signal becomes incomplete. However, by providing a confirmation sound generation circuit to generate a confirmation sound at the end of a set of data signals, it is possible to confirm on the transmitting side that a complete set of data signals has been sent. It is. Such a configuration that only performs confirmation of transmission can be used in systems with short data length and relatively low transmission error rate, and has the advantage of simplifying the configuration since no handshake with the transmitter is required. have.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. As shown in Figure 1, there is a switch 1 that is turned on only during operation, like a push button switch, and a switch 1 that converts the contact output of switch 1 into a voltage signal.
Input signal V ₁ that becomes L level when is in the on state
an input circuit 2 that creates a waveform of the input signal _V1 ; a waveform shaping circuit 3 that shapes the waveform of the input signal _{V1 ;}
A transmission control circuit section A is constituted by a delay circuit 4 which outputs a control signal _V3 which becomes an H level after a predetermined time delay when the signal becomes an H level. The waveform shaping circuit 3 is configured by connecting two inverter circuits INV ₁ and INV ₂ in series, and receives an input signal V from the input terminal of the waveform shaping circuit 3 and the output terminal of the first inverter circuit INV ₁ , respectively. ₁ and its inverted signal are extracted. The control signal _V3 , which is the output of the delay circuit 4, becomes an input signal when the switch 1 is turned on.
It falls at the same time as V ₁ falls, switch 1 is turned off, and when the input signal V ₁ rises, it rises after a predetermined time delay.

The transmission control circuit section A controls the operation of the transmission circuit section B, and the transmission circuit section B generates signals of four types of frequencies and scan outputs S ₁ to _{S 6} for specifying signal generation timings. A transmission signal forming circuit 5 that generates a signal, a code setting switch section 6 that specifies the order of generation of four types of frequencies, and a modulation oscillation circuit that generates a carrier wave and modulates the frequency of the carrier wave (for example, 260 MHz) using the output of the transmission signal forming circuit 5. It is comprised of a circuit 7 and a power supply control circuit 8 whose power supply is controlled by a control signal V ₃ output from the transmission control circuit section A. Oscillation of the transmission signal forming circuit 5 is controlled by a crystal resonator 12. As shown in FIG. 2, the scan outputs S ₁ to _{S 6} generated by the transmission signal forming circuit 5 are pulses, each consisting of a set of six pulses, and the six scan outputs S ₁ to _{S 6} are It has become more common to occur while cycling. A no-signal period corresponding to two pulses is provided between one set of scan outputs S ₁ to S ₆ and the next set of scan outputs S ₁ to S ₆ . The code setting switch section 6 is composed of four address setting switches AD, one unit number setting switch UN, one type setting switch TP, and a pair of switching transistors Q ₁ and Q ₂ . The power supply control circuit 8 is a switching transistor _Q3 for power supply control.
and a three-terminal regulator 13, and is input to the base of the power supply control switching transistor _Q3 while the control signal _V3 is at L level.
Power is supplied to a transmission signal forming circuit 5, a modulation oscillation circuit 7, and a confirmation sound generation circuit section C, which will be described later. In the figure, 14 is an antenna connected to the output end of the modulation oscillation circuit 7.

The last scan output S ₆ of the set of scan outputs S ₁ to _{S 6} is input to the confirmation sound generation circuit section C.
The confirmation sound generation circuit section C includes a confirmation sound generation circuit 9 that generates a confirmation sound, and a confirmation sound generation control circuit 10 that controls power supply to the confirmation sound generation circuit 9.
The confirmation sound generation circuit 9 is composed of a piezoelectric buzzer 11 and a drive circuit for the piezoelectric buzzer 11, and is designed to generate a buzzer sound when supplied with power.

(Operation) The operation will be explained below. First, the operation of the transmission control circuit section A will be explained. As shown in FIG. 4a, while the switch 1 is in the on state, the input signal _V1 is at L level. This input signal V ₁ is input to the waveform shaping circuit 3 and the base of the first switching transistor Q ₁ of the code setting switch section 6 . Further, the output of the first inverter INV ₁ of the waveform shaping circuit 3 is input to the base of the second switching transistor Q ₂ of the code setting switch section 6. The output of the waveform shaping circuit 3 is sent to the delay circuit 4.
As shown in FIG. 4c, a control signal _V3 is created which falls simultaneously with the fall of the input signal and rises with a delay from the rise of the input signal. Here, the delay time T is set to 250 msec or more if the generation cycle of one set of scan outputs is 110 msec. This control signal _V3 is input to the power supply control switching transistor _Q3 .

As shown in FIG. 2, when the transmission signal forming circuit 5 of the transmitting circuit section B is supplied with power at time t ₀ , after a predetermined reset time T ₀ has elapsed, the transmission signal forming circuit 5 of the transmitting circuit section B outputs power at regular intervals t ₁ during the power supply period. Six scan outputs _S1 to _S6 , which are pulses, are generated cyclically. A no-signal period corresponding to two pulses is provided between one set of scan outputs S ₁ to S ₆ and the next scan output S ₁ to S ₆ . Furthermore, the transmission signal forming circuit 5 is provided with four frequency selection input terminals f ₁ to f 4 , and any one of these frequency selection input terminals f ₁ to _{f 4 is} set to H level. By this,
The corresponding frequencies F ₁ to _{F 4} are output from the output terminal OUT. The power supply to the transmission signal forming circuit 5 is controlled by the power supply control circuit 8, and the control signal V ₃ generated from the transmission control circuit section is controlled by the power supply control circuit 8.
Power is supplied to the transmission signal forming circuit 5 only during the period when the signal is at L level. That is, power is supplied to the transmission signal forming circuit 5 for a period equal to the time during which the switch 1 is in the on state plus the delay time T of the delay circuit 4. By the way, the data signal Vd which is the output of the transmission signal forming circuit 5 has four types of frequencies F ₁ as shown in FIG.
_-F4 are raw data signals _B1 to _B6 , respectively, and are time-series signals in which the raw data signals _B1 to _B6 are connected in series in a predetermined order. The data is then modulated and transmitted as an FSK signal. Data signal Vd
is generated in synchronization with the scan outputs S ₁ to S ₆ , and a frequency is set for each of the six scan outputs S ₁ to S ₆ . The frequency corresponding to the first scan output S ₁ (F ₁ in the example) indicates a unit number that specifies which of the contact outputs is fire detection, crime prevention, call, etc. The frequencies corresponding to the scan outputs S ₂ to S ₅ (F ₄ , F ₂ , F ₃ , F ₁ in the embodiment) indicate house codes (addresses), and the frequencies corresponding to the sixth scan output S ₆ (in the embodiment In this case, F ₄ ) is configured to indicate the open/closed state of the contact. What is the house code here?
This is a code for specifying the receiver that receives data, and by setting a different house code for each house, for example, data from a neighboring house is not received and interference is avoided. The combination of frequencies F ₁ to F ₄ in the data signal Vd is set by the code setting switch unit 6. That is, each of the four address setting switches AD and unit setting switch UN in the code setting switch section 6 is a selection switch that allows one of the four types of frequency selection input terminals _f1 to _f4 to be selected. , the unit setting switch UN inputs the first scan output _S1 to any one of the frequency selection input terminals _f1 to f4, and each address setting switch AD inputs the second to fifth scan outputs _{S2 to F4} , respectively.
_S5 is input to any one of the frequency selection input terminals _f1 to _f4 . As a result, a combination of frequencies specifying the unit number and house code is set. Type setting switch TP is 2
The switch is a pole double-throw switch, and a sixth scan output is connected to each common terminal via switching transistors Q ₁ and Q ₂ , respectively. Further, each fixed terminal of the type setting switch TP is connected to frequency selection input terminals _f1 to _f4 , respectively. However, by combining the switching transistors Q ₁ and Q ₂ and the type setting switch TP, it is possible to set which frequency selection input terminals f ₁ to _{f 4} the sixth scan output S ₆ is input to. Here, the type setting switch TP is used to select whether to drive the main receiver or the additional receiver based on the data transmitted from the data transmitter when a receiver is added. In addition, the frequencies F ₁ to _{F 4} selected by the switching transistors Q ₁ and Q ₂
corresponds to the contact output, that is, the open/closed state of switch 1. In other words, in the embodiment, the sixth scan output
Indicates that switch 1 is in the on state when frequency F ₁ is selected corresponding to S ₆ , and frequency F ₂
When is selected, it indicates that switch 1 is in the off state. When the switch 1 is in the on state for a predetermined period of time, a data signal Vd indicating the on state of the switch 1 is generated, as shown in FIG. 4d.
(V ₄ ) is generated and the switch 1 is turned off, a data signal Vd (V ₄ ) indicating the off state is generated during the delay time T. During this delay time T, the data signal Vd indicating the off state
By transmitting (V ₄ ), the receiver can reliably detect that switch 1 is in the OFF state.

A sixth scan output _S6 is input to the confirmation sound generation circuit section. That is, the confirmation sound generation control circuit 10
_{The confirmation sound generating circuit 9 is supplied with power only during the period when the sixth scan output S 6 (} V ₂ ) occurs, the piezoelectric buzzer 11 sounds and generates a confirmation sound. Since the sixth scan output S ₆ (V ₂ ) is generated at the end of a set of data signals Vd, when this confirmation sound is generated, it means that a set of data signals Vd has been sent out, and the confirmation sound If the switch 1 is turned off after this occurs, one set of data signals Vd can be reliably transmitted.

[Effects of the Invention] As described above, the present invention controls the transmitting circuit section so that the power supply to the transmitting circuit section is started and a data signal is generated by starting the operation of the switch whose open/closed state is reversed during operation. Since it is equipped with a transmission control circuit that stops power supply to the transmission circuit after a certain period of time after the end of the switch operation, the transmission control circuit will stop supplying power to the transmission circuit after a certain period of time after the end of the switch operation. Power is supplied to the transmission control circuit section. In other words, since the transmission control circuit operates only for a limited time, power consumption can be extremely reduced, and even if batteries are used as a power source, there is no need to replace batteries over a long period of time. There is an advantage. In addition, since a data signal in which raw data is connected in time series is generated within a time limit by the transmission control circuit, in some cases it is possible to generate a set of data signals within a time limit. However, since a confirmation sound generation circuit is provided to generate a confirmation sound at the end of one set of data signals, a complete set of data signals can be sent. This has the effect of allowing the transmitting side to confirm that this is the case. Moreover, since handshake with the receiver is not required, there is an advantage that the configuration is simple.

[Brief explanation of drawings]

Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is an operation explanatory diagram showing the scan output same as above,
The figure is an operation explanatory diagram showing an example of the data signal same as above.
FIG. 4 is an operation explanatory diagram showing signals of each part in FIG. 1. 1 is a switch, A is a transmission control circuit section, B is a transmission circuit section, and C is a confirmation sound generation circuit section.

Claims (1)

[Claims] 1. A transmitter circuit section that creates a set of data signals from a time-series signal that is a series connection of multiple raw data signals and transmits it to a receiver, and a transmitter circuit section that creates a set of data signals from a time-series signal that connects multiple raw data signals in series and transmits it to the receiver. a transmission control circuit section that controls the transmission circuit section to start supplying power to the transmitter and generate a data signal, and stops supplying power to the transmitter circuit section a certain period of time after the end of the switch operation; Data transmission characterized by comprising: a confirmation sound generation circuit unit that generates a confirmation sound to notify the end of a set of data signals in synchronization with the last raw data signal among the constituent raw data signals. Machine.