JPS61147489U - - Google Patents
Info
- Publication number
- JPS61147489U JPS61147489U JP2788885U JP2788885U JPS61147489U JP S61147489 U JPS61147489 U JP S61147489U JP 2788885 U JP2788885 U JP 2788885U JP 2788885 U JP2788885 U JP 2788885U JP S61147489 U JPS61147489 U JP S61147489U
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- alarm circuit
- radio waves
- detects
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003321 amplification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
Landscapes
- Emergency Alarm Devices (AREA)
Description
第１図は保安帽の斜視図で、イは送信部、ロは
受信部の装着位置を示すためのもの、第２図は、
送信部のブロツク図、第３図は受信部のブロツク
図、第４図は受信部の警報音回路を示す実施例で
ある。
１…送信部、２…受信部、３…発信機の電源、
４…受信機の電源、５…発振回路、６…高周波増
巾回路、７…局部発振回路、８…混合回路、９…
中間周波増巾回路、１０…受信可能検出回路、１
１…警報音発生部、Ｍ，Ｍ′…保安帽、Ｎ…縁部
、Ｓ…ボタン、Ａ…後左部、Ｂ′…後右部、Ｋ…
保安帽Ｍの後中央部、Ｋ′…保安帽Ｍ′の後中央
部、Ｉ…ゲートＩＣ部、Ｉ′…電圧検出のための
ＩＣ部。
Figure 1 is a perspective view of a safety helmet, where A shows the transmitting part and B shows the mounting position of the receiving part.
FIG. 3 is a block diagram of the transmitting section, FIG. 3 is a block diagram of the receiving section, and FIG. 4 is an embodiment showing an alarm sound circuit of the receiving section. 1... Transmitting section, 2... Receiving section, 3... Transmitter power supply,
4...Receiver power supply, 5...Oscillation circuit, 6...High frequency amplification circuit, 7...Local oscillation circuit, 8...Mixing circuit, 9...
Intermediate frequency amplification circuit, 10...receivable detection circuit, 1
1... Alarm sound generating part, M, M'... Safety cap, N... Edge, S... Button, A... Rear left, B'... Rear right, K...
Rear center part of safety cap M, K'...rear center part of safety cap M', I...gate IC section, I'...IC section for voltage detection.
Claims (1)
相当回路を設け、発振電波の有無を検出し、それ
により警報回路を作動し、更に受信機電源電圧の
低下を検出する回路を、同一警報回路に接続する
ことを特徴とする電波切断による通報装置付安全
帽。 The same alarm circuit receives the radio waves from the oscillator, provides a squelch equivalent circuit, detects the presence or absence of the oscillated radio waves, activates the alarm circuit, and further detects a drop in the receiver power supply voltage. A safety helmet equipped with a radio wave disconnection reporting device, which is characterized by being connected to a radio wave cutting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2788885U JPS61147489U (en) | 1985-02-27 | 1985-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2788885U JPS61147489U (en) | 1985-02-27 | 1985-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61147489U true JPS61147489U (en) | 1986-09-11 |
Family
ID=30525258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2788885U Pending JPS61147489U (en) | 1985-02-27 | 1985-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61147489U (en) |
-
1985
- 1985-02-27 JP JP2788885U patent/JPS61147489U/ja active Pending
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