JP4569495B2 - Battery-powered terminal device - Google Patents

Description

  The present invention relates to a battery-driven terminal device in which a built-in processing operation means is driven by a battery by turning on a power switch, and the operation means is initialized by turning on a reset switch.

  Regarding the understanding of the operating status of equipment (equipment) in the factory, it was common for equipment managers to inspect the equipment several times a day. However, recently, due to labor shortage and labor cost reduction, a method has been adopted in which a sensor is attached to equipment instead of collecting information by a person, and its operation information is collected by processing operation means and transmitted to the central side.

  Furthermore, a method of transmitting sensor information wirelessly is also drawing attention. In this case, the wireless terminal on the transmission side is often battery driven. Apart from whether or not it has a transmission function, a battery-driven terminal device is referred to as a battery-driven terminal device. In addition, there exists the following patent document 1 as what shows such a thing.

JP 2000-332644 A

  When the battery-driven terminal device is installed for the first time, it is necessary to perform a power-on operation for supplying power to a processing operation means for collecting operation information and a hardware reset operation for initializing the processing operation means. .

  To prevent battery consumption before installation, install a battery immediately before installation and perform a hardware reset, or install a battery in advance. There is a method such as providing a hardware reset switch.

  When the battery is installed immediately before the hardware reset is performed as in the former case, if the number of installed battery-driven terminal devices is increased, the labor is increased. Also, when the battery is installed in advance and the power switch and reset switch are installed outside the case as in the latter case, the exposure of the switch etc. to the outside of the case is as much as possible considering the rigidity and waterproofness of the case. It is desirable to avoid it.

  Accordingly, an object of the present invention is to provide a battery-powered terminal device that can reduce the troubles related to power-on and hardware reset operations at the time of initial installation as much as possible and can obtain high waterproofness.

  In order to achieve the above object, a feature of the present invention is that a battery that drives a built-in processing operation means by turning on a power switch and initializes the processing operation means by turning on a reset switch. In the drive-type terminal device, the interlock switch of the power switch and the reset switch is arranged inside the case where there is an opening, and further facing the power switch and the interlock switch inside the case where there is an opening. An opening bar is provided, and the opening can be inserted into and fixed to the inside of the case from the outside of the case to the inside. The bar is moved toward the power switch and the interlock switch, the power switch is turned on and the interlock switch is turned on. The by operating in that so as to open during the processing operation means and said reset switch.

  According to the present invention, since the power source is mounted in the case and the opening is sealed by inserting and fixing the operation rod, the waterproof property is high. Also, by inserting the operation rod, the power switch is turned on so that the processing calculation means is driven by the battery, and the processing calculation means is operated by the interlock switch operation after the reset switch is turned on to initialize the processing calculation means. Since the space between the reset switches is opened, the processing operation means will not be re-initialized even if the reset switch malfunctions afterwards, reducing the effort involved in power-on and hardware reset operations at the first installation. it can.

  Hereinafter, an embodiment of the present invention will be described.

FIG. 1 is a block diagram of a wireless terminal showing an embodiment of the present invention. In FIG.
Is a wireless terminal, which is an embodiment of the battery-driven terminal device of the present invention, corresponding to one transmitting / receiving device that performs wireless transmission / reception with a repeater (not shown), and includes an antenna 10Ra.

The repeater (not shown) corresponds to the other transmitter / receiver that transmits and receives wirelessly, transmits information received from the wireless terminal 10 to the central unit (not shown), and conversely commands from the central unit. Transmit to the wireless terminal 10 side. Although there are a plurality of wireless terminals, only one is shown.

  The wireless terminal 10 includes a central processing unit (hereinafter abbreviated as “CPU”) 11 that is a built-in processing operation means, a timer 12, a battery 13 as a power source, a transmission circuit (transmission unit) 14, a reception circuit (reception unit) 15, A switch box 16, a timer monitor 17, a machine number setting unit 18, various sensors 19a to 19c, a power switch 20, a reset switch 21, an interlock switch 22 and a filter 23 are provided.

  The machine number setting unit 18 identifies and identifies which wireless terminal 10 has sent the wireless information sent from each wireless terminal 10 as a child machine having a large number of relay machines as parent machines (not shown). The machine number (machine number) that can be set is individually set in the wireless information transmitted to the repeater on the wireless terminal 10 side.

  The various sensors 19a to 19c are installed in a specific facility (not shown) and measure the operation state of the facility.

  The electric power of the battery 13 is supplied to the timer 12 and the timer monitor 17 through the power switch 20 and the switch box 16. A connection indicated by a solid line indicates that the connection is always established. The dotted line indicates that the CPU 11, the transmission circuit 14, the reception circuit 15 and each sensor 19 are connected to the switch box 16, but this is in accordance with the instruction of the timer monitor 17 that monitors the time in the timer 12. It indicates that the connection is made in a timely manner and not connected at other times.

  The power switch 20 is a push type, and power supply to the switch box 16 of the battery 13 can be stopped by turning off the power switch 20. Therefore, the power consumption of the battery 13 can be prevented by opening the power switch 20 before installation.

  The reset switch 21 is a switch for performing a hardware reset (initialization) of the CPU 11. When the reset switch 21 is on (a reset switch is turned on), the CPU 11 performs a hardware reset. This reset operation is performed after turning on the power after the initial installation of the wireless terminal or after turning on the power after battery replacement. As the reset switch 21, a tilting switch is used in which, when tilted, the internal conductive sphere moves to connect the contacts.

  The filter 23 is a low-pass filter for removing unnecessary high frequency components (chattering noise) generated when the reset switch 21 is turned on.

The CPU 11 collects data (information) from each sensor 19 and wirelessly communicates with the relay device via the transmission circuit 14 and the reception circuit 15 to perform transmission. As for the time interval of wireless communication with the repeater, data is transmitted from the repeater at the first communication with the repeater.

  The timer monitor 17 refers to the time in the timer 12 according to the time interval designated by the repeater and controls the power supply to each part.

  Since the wireless terminal 10 operates the CPU 11 in a timely manner, the timer monitor 17 is separated from the CPU 11 so that the power of the battery 13 is not consumed.

  The power switch 20 and the interlock switch 22 are interlocked by a screw 31 as an operation rod shown in FIGS.

  The reset switch 21 is a tilt-type switch. When the wireless terminal 10 is tilted during the wireless communication after the operation of the CPU 11 is started by turning on the power switch 20 at the first installation, the reset switch 21 is operated and the hardware is switched. When the reset occurs, a problem occurs in wireless communication.

Therefore, the operator turns on the power switch 20 with a screw (operation bar) 31, turns on the reset switch 21, and then operates the interlock switch 22 with the screw (operation bar) 31.
Even if the CPU 11 and the reset switch 21 are opened and the reset switch 21 malfunctions, the reset signal does not reach the CPU 11.

Hereinafter, referring to FIGS. 2 and 3, a power switch 20, a reset switch 21, and a screw (operation bar)
The arrangement configuration of 31 and power-on and hardware reset at the time of initial installation will be described.

  FIG. 2 is a cross-sectional view showing a part of the case 30 of the wireless terminal 10.

In FIG. 2, the lower side of the case 30 displaying the screw 31 is the outer side of the case 30, and the upper side of the case 30 is the inner side of the case 30. The case 30 has an opening 30A, and a female screw is provided on the inner wall of the opening 30A.

  Inside the case 30 is a board 32 on which the CPU 11 and the like shown in FIG. 1 are mounted. The board 32 has a power switch 20 and an interlock switch 22 of a reset switch 21 disposed at a position where an opening 30A is provided. The switch 21 is a tilt switch as described above.

  The interlock switch 22 is a hinged switch having a contact arm 22A, a tension spring 22B, and a push rod 22C. The contact arm 22A has a fulcrum on the right side and a contact on the left side. The contact arm 22A is driven by the tension spring 22B. Since the contact is pressed to the substrate 32 side, the contact is a b contact that remains closed.

  Reference numeral 33 denotes a charging bar that is biased toward the inner wall side of the case 30 by the tension springs 34A and 34B. One end of the closing bar 33 faces the push button of the power switch 20, and the other end faces the push bar 22 </ b> C of the interlock switch 22. The closing bar 33 is biased toward the inner wall of the case 30 by tension springs 34A and 34B so as to be separated from the push button of the power switch 20 and the push bar 22C of the interlock switch 22.

  As described above, the reset operation is performed after power-on after the initial installation of the wireless terminal 10 or after power-on after battery replacement. Therefore, it is necessary that the reset switch 21 does not operate except after the power is turned on.

After the initial installation, the operator attaches the screw 31 to the opening 30 </ b> A in the case 30 and screws up the screw 31. Then, the charging bar 33 biased to the inner wall side of the case 30 by the tension springs 34A and 34B is pushed by the screw 31 and gradually rises. The input bar 33 that continues to rise first presses the push button of the power switch 20. At this point, the power is turned on.

Next, the operator performs a hardware reset operation. Since the reset switch 21 is a tilt switch, the wireless terminal 10 is tilted together with the case 30 in the direction in which the tilt switch operates. Then, since the interlock switch 22 is a contact b, the reset signal output by the operation of the reset switch 21 reaches the CPU 11 through the interlock switch 22 and the filter 23, and initializes the CPU 11 (hardware reset). After the state is held for about 1 second in order to ensure that the hardware reset is performed, the wireless terminal 10 is returned to the original state, and the hardware reset ends.

  At this point, the wireless terminal 10 is in an operating state and communicates wirelessly with a repeater (not shown) for transmission / reception. Subsequently, an interlock for the reset switch 21 is activated.

For this purpose, by further screwing the screw 31 into the opening 30A, the tension spring 34A,
The input bar 33 continues to rise against 34B and tilts as shown in FIG. 3 with the push button of the power switch 20 as a fulcrum. While tilting the insertion bar 33, the screw 31 further rises and raises the push rod 22C of the interlock switch 22.

  Since the interlock switch 22 is a hinge-type switch as described above, the push rod 22C is lifted by pushing the contact arm 22A against the tension spring 22B so that the contact of the left contact is released with the right side as a fulcrum. Is open. Accordingly, the interlock for the reset switch 21 is established. The screw 31 is screwed and fixed as it is to the opening 30A, and functions as a sealing material for the opening 30A.

  If the screw 31 is inserted and fixed in the case 30, the interlock with the reset switch 21 is maintained. Therefore, even if the wireless terminal 10 is tilted and the reset switch 21 is turned on, a malfunction of hardware reset is caused. Will not occur and wireless communication will not be hindered.

  The reset operation after battery replacement is also performed in the same manner as described above by once screwing the screw 31 out of the opening 30A of the case 30 and screwing it again.

  The power switch 20 and the reset switch 21 may be other types of switches.

  For example, a reed switch may be used as the power switch 20 and may be turned on by bringing a magnet provided on the making bar 33 closer. The reset switch 21 may be a switch utilizing a reed switch, an acceleration sensor, or an illuminance sensor, and may be turned on by magnetism, vibration, light, or the like.

It is a block diagram of the radio | wireless terminal which shows one Embodiment of this invention. It is sectional drawing which shows a part of case of the radio | wireless terminal shown in FIG. It is a figure which shows that the interlock was materialized with respect to the reset switch shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Wireless terminal (slave unit), 10Ra ... Antenna, 11 ... CPU (processing arithmetic means), 13 ... Battery, 20 ... Power switch, 21 ... Reset switch, 22 ... Interlock switch, 31 ... Screw, 33 ... Insertion bar .

Claims (1)

In the battery-driven terminal device that drives the built-in processing operation means by turning on the power switch, and initializes the processing operation means by turning on the reset switch.
The interlock switch of the power switch and reset switch is arranged inside the case where there is an opening, and a closing bar is provided inside the case where there is an opening, facing the power switch and the interlock switch. The operation hole can be inserted and fixed to the opening from the outside to the inside of the case, and the insertion bar is connected to the power switch by inserting and fixing the operation bar to the opening. A battery-driven type characterized in that it is moved toward the interlock switch, the power switch is turned on, and the interlock switch is operated to open the space between the processing calculation means and the reset switch. Terminal device.

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