JPH03220827A - Wireless monitoring equipment - Google Patents

Abstract

PURPOSE:To accurately predict total power consumption and then voltage drop of a battery by adding power consumption resulting from the lapse of time from the start of use of a power battery and power consumption by the transmission operation and integrating the result. CONSTITUTION:A monitoring signal from an equipment 1 is inputted to this wireless monitoring equipment 6, in which the signal is binarized to represent the state of operation and shut-off. When binarized monitoring information is varied, a communication packet is generated in addition to its own address, a communication control code and a checking code and the packet is sent to a receiver 7. Moreover, a voltage dropping signal is generated in a form of the communication packet signal similarly and sent to the receiver 7. At the application of power to the wireless monitoring equipment 6, a timer section 5 starts timer counting. A timer integration section 9 integrates a prescribed value at every counted value from the timer section 5 and each transmission and compares it with a preset threshold level. When the integrated value is larger than the threshold level, a voltage dropping signal is outputted to a coding section and the coding section generates a communication packet informing the voltage drop.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wireless monitor device that transmits monitor information using radio waves.

BACKGROUND ART In a conventional wireless monitor device, as shown in FIG.
It is digitized or binarized. In the encoding unit 3, when the monitor information value digitized and binarized by the monitor input unit 2 changes, an address, a communication control code, etc. are added and a communication packet is generated. The transmitter 4 is powered on only when transmitting, and transmits the generated communication packets to UHF waves or VH waves.
It is transmitted by radio waves using F waves. The timer section 5 starts timer operation when the power is turned on, and when a certain period of time has elapsed, notifies the encoding section 3 of the elapse of time.

When the encoding unit 3 receives the elapsed time from the timer unit 5,
Voltage drop information is transmitted from the transmission output section 4.

Problems to be Solved by the Invention However, with the above configuration, it is difficult to predict the voltage drop of the power supply battery simply based on the operating time, as the power consumption of this device differs greatly between the transmission output and other times. The problem was that it was large.

The present invention is intended to solve such conventional problems, and aims to accurately predict voltage drop by correcting the timer count value based on the number of transmissions in addition to the passage of time.

Means for Solving the Problems In order to solve the above problems, the wireless monitor device of the present invention is provided with a timer integrator that starts a timer count when the power is turned on and adds a fixed value to the count value when a transmission operation is performed. It is something that

Effect of the Invention With the above-described configuration, the present invention starts timer counting when the power is turned on, and adds a fixed value to the timer count value each time a transmission operation that consumes a large amount of power is performed. This has made it possible to accurately predict battery voltage drops.

Example Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is an example of an application system of the wireless monitor device of the present invention. The monitor signal from the device 1 is input to the wireless monitor device 6, and the monitor signal from the device 1 is input to the wireless monitor device 6.
Valued. 2 (When the i-enabled monitor information changes,
A communication bucket is generated by adding the self address, communication control code, and check code, and is transmitted to the receiver 7. Similarly, a pressure reduction signal is also generated into a communication packet and transmitted to the receiver 7. The receiver 7 uses a check code to check whether the received communication packet has been received correctly, and if it has been received correctly, displays operation/stop information and battery exhaustion information on the monitor display section 8. FIG. 2 is a circuit block diagram of the wireless monitor device of the present invention.

The monitor signal of the device 1 is input to the monitor input unit 2, and is converted into 2 (I!) corresponding to the operating or stopped state. When the monitor information changes, the encoder 3 converts the set address,
A communication packet is generated using a communication control code, monitor information, and check code. The transmission output unit 4 is powered on only when transmitting, and also has a timer unit that wirelessly transmits communication packets by using a VHF wave or U) (F wave high frequency signal as a carrier wave and adding FM modulation or AMi modulation. When the power is turned on, the timer unit 5 starts the timer counting operation.The timer integrating unit 9 integrates the count value from the timer unit 5 and a fixed value for each transmission operation, and calculates the preset threshold value. A comparison is made. When the integrated value becomes larger than the threshold, a voltage drop signal is output to the encoder,
The encoder generates a communication packet that notifies the voltage drop. FIG. 3 is a transmission timing diagram of the wireless monitor device of the present invention showing the above operation.

With the above configuration, the power consumption due to the transmission operation is corrected, and therefore the voltage drop can be accurately predicted, compared to the case where the voltage drop is predicted simply based on the elapsed time since the battery was inserted.

According to the wireless monitor device of the present invention, as described above, the effects of the invention are as follows.
By adding and integrating the power consumption due to the elapsed time since the start of use of the power supply battery and the power consumption due to the transmission operation, it is now possible to accurately predict the total power consumption. Therefore, the battery voltage drop can be accurately predicted.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a wireless monitor device according to an embodiment of the present invention, FIG. 2 is a circuit block diagram of the same wireless monitor device, FIG. 3 is a transmission timing diagram of the same wireless monitor device, and FIG. 4 is a conventional wireless monitor device. FIG. 2 is a circuit block diagram of a wireless monitor device. 2...Monitor input section, 3...Encoding section, 4...Transmission output section, 9...Timer integration section.

Claims (1)

[Claims] a monitor input section that digitizes an input signal; an encoder section that generates a communication packet by adding address information to the monitor information and voltage drop information digitized by the monitor input section; a transmission output section that transmits communication packets from the conversion section by radio waves; a timer count that starts when the power is turned on; and a fixed value is added to the timer count value each time a transmission is performed from the transmission output section; A wireless monitor device comprising a timer integration section that outputs a voltage drop signal to the encoding section when the timer count value becomes larger than a threshold value.