JP3157825B2 - Wireless radiation detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a wireless radiation detection device for detecting radiation,
In particular, the present invention relates to improvement of a charging means of a battery incorporated in a probe for measuring a radiation dose rate.

[Prior Art] Various types of radiation detection devices have been used as radiation detection devices for detecting radiation.

FIG. 3 shows an example of a conventional radiation detection device.

The radiation detection device includes a main body 10 and a probe 12, and the main body 10 and the probe 12 are connected by a cable 14.

The probe 12 is provided with a detector 16 for detecting radiation, which is composed of, for example, a GM counter tube.

On the other hand, the main body 10 includes a power supply 18 for supplying power for measurement to the detector 16 and a high-voltage power supply 20 for increasing the voltage of the power supply 18.
A counting circuit 22 for counting the dose of radiation measured by the detector 16, an arithmetic circuit 23 for calculating a radiation dose rate or the like based on the count value, and a display 24 for displaying the calculation result. Is provided.

As described above, the main body 10 and the probe 12 are connected by the cable 14, and specifically, the electrical connection between them is established by the connector 26 provided on the main body 10.

In such a conventional radiation detection apparatus, a probe 12 is separated from a main body 10 via a cable 14, and the probe 12
Although the mobility of the probe 12 is high, there is a problem that the movement range of the probe 12 is restricted by the cable 14.

Therefore, a radiation detection device capable of wirelessly transmitting radiation dose data between the main body 10 and the probe 12 has been put to practical use.

That is, a transmitter for transmitting the measurement result to the probe 12 is provided, while a receiver for receiving the measurement result transmitted to the main body 10 is provided.

According to this, the probe 12 is attached to clothes or the like,
Radiation can be measured without any restrictions, and a very convenient radiation detection device can be configured.

[Problems to be Solved by the Invention] However, in such a radioactive radiation detection device, it is necessary to charge a battery provided in the probe. For example, the battery of the probe is charged from a main body via a charging cable. If charging is performed, a charging cable must be connected each time charging is performed, which is very troublesome.

Also, it is conceivable to provide a charging stand or the like for mounting the probe 12 on the main body 10 and perform charging by mounting the probe 12 on the main body 10, but the probe 12 may fall down during charging for a long time, Or it may come off the table by some external action. For these reasons, it has been difficult to charge easily and reliably.

The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a wireless radiation detection device that can easily and reliably charge a battery disposed in a probe in the wireless radiation detection device. To provide.

[Means for Solving the Problems] In order to achieve the above object, the present invention comprises a main body and a probe, and wirelessly transmits radiometric data measured by the probe to the main body. A detection device, comprising: a charging hook made of a magnetic material having an outer end protruding from a case of the main body; a primary coil wound around a base end of the charging hook; and an electric power supplied to the primary coil. A power supply for charging is provided, and a loop part including a secondary coil and hooked on the charging hook, a charger connected to the secondary coil, and a probe connected to the charger are provided on the probe. A rechargeable battery, wherein the battery of the probe is charged in a state where the loop is hooked on the charging hook and the probe is hung.

[Operation] According to the above configuration, power is supplied from the charging power supply to the primary coil, and a magnetic flux is generated in the charging hook made of a magnetic material. As a result, an electromotive force is generated in the secondary coil disposed in the loop portion. Thus, the battery is charged by the electromotive force via the charger.

Therefore, the battery can be charged only by hooking the loop portion on the charging hook, so that the charging can be completed easily without troublesome connection of the charging cable.

EXAMPLES Hereinafter, preferred examples of the present invention will be described with reference to the drawings.

FIG. 1 shows a preferred embodiment of a wireless radiation detecting apparatus according to the present invention. This wireless radiation detection device includes a main body 26 and a probe 28.

The probe 28 is provided with an annular loop portion 30. The loop 30 has a secondary coil 32 inside.
Is wound along the loop. Both ends of the secondary coil 32 are connected to a charger 34, and a battery 36 is connected to the charger 34.

Therefore, when an electromotive force is generated in the secondary coil 32, the charger 34
Rectifies and smoothes the current, and the battery 36 is charged.

A booster 38 is connected to the battery 36, and the voltage of the battery 36 is boosted to a predetermined voltage and supplied to the detector 40.

Here, the detector 40 is configured by, for example, a GM counter tube or the like. Of course, it is preferable to use another detector, for example, a semiconductor detector with low power consumption.

The output of the detector 40 is input to the counting circuit 42. The counting circuit 42 counts the pulses output from the detector 40. Then, the count value is transmitted to the transmission circuit 44.

The transmission circuit 44 performs, for example, modulation or the like in order to transmit measurement data to the main body 26 using radio waves.

Then, the output of the transmission circuit 44 is sent to the antenna 46.

On the other hand, the main body 26 is provided with a receiving antenna 48 for receiving a radio wave transmitted from the antenna 46. A receiving circuit 50 is connected to the receiving antenna 48,
The received signal is amplified and demodulated by the receiving circuit 50, and then sent to the arithmetic circuit 52.

Then, for example, the arithmetic circuit 52 calculates a radiation dose rate or the like based on the transmitted data, and the calculation result is displayed on the display unit 54.

Further, the main body 26 is provided with a charging power source 56 for charging the battery 36 provided in the probe 28. A primary coil 58 is connected to the charging power supply 56.

A charging hook 60 made of a magnetic material is attached to a case (not shown) of the main body 26. Here, the outer end of the charging hook 60 is formed in a U-shape convex downward as shown in the figure.

The primary coil 58 is wound around the starting end of the charging hook 60.

FIG. 2 shows an equivalent circuit in a state where the loop portion 30 is hooked on the charging hook 60. The primary coil 58 and the secondary coil 32 are electromagnetically coupled by a charging hook 60 made of a magnetic material.

That is, by operating the charging power supply 56 and supplying the AC power to the primary coil 58, the magnetic flux passes through the charging hook 60, and the magnetic flux generates an electromotive force in the secondary coil 32. Then, by giving the generated electromotive force to the battery 36 via the charger 34, the battery 36 is charged.

As described above, the wireless radiation detection apparatus according to the present invention does not require any charging cable or the like, and is easily and reliably provided in a state where the loop portion 30 is hooked on the charging hook 60 and the probe 28 is hung on the main body 26. It is possible to charge the battery.

[Effects of the Invention] As described above, according to the wireless radiation detection apparatus of the present invention, the battery in the probe can be charged simply by hooking the loop portion of the probe on the charging hook of the main body. Therefore, charging can be performed easily without the need for a charging cable or the like.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a wireless radiation detecting apparatus according to the present invention, FIG. 2 is a circuit diagram showing an equivalent circuit in a state where a loop portion is hooked on a probe portion, and FIG. It is an explanatory view showing an example of a radiation detection device. 26 Body 28 Probe 30 Loop 32 Secondary coil 34 Battery 36 Battery 56 Charging power supply 58 Secondary coil 60 Charging hook

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Claims (1)

(57) [Claims] 1. A wireless radiation detecting device comprising a main body and a probe, wherein the radiometric radiation detection device wirelessly transmits radiation measurement data measured by the probe to the main body. A charging hook made of a magnetic material having a protruding end; a primary coil wound around a base end of the charging hook; and a charging power supply for supplying power to the primary coil. A loop portion including a secondary coil and hooked on the charging hook; a charger connected to the secondary coil; and a rechargeable battery connected to the charger. A wireless radiation detection apparatus, wherein a battery in the probe is charged in a state where the probe is hung by hooking a loop portion.