JPS59203970A - Connection detector - Google Patents

Abstract

PURPOSE:To confirm easily whether an electric connection is normal or not by providing a check signal generating means, response signal generating means, etc., to each of units which are coupled mutually and used, and recognizing a normal connection by detecting a response signal. CONSTITUTION:A light source 14, endoscope camera 11, etc., for units which are used while coupled mutually are connected through a camera adapter 12, etc. When the check switch 25 of this unit 14 is turned on, a timer relay 23 is energized and a check signal from a check signal generating circuit 26 is transmitted to the camera 11 through a connection part 17, connection parts 16 and 15 of the camera adapter 12, etc., by making the contact A of a relay switch 24. Then, a timer relay 19 is energized through a check signal detecting circuit 21 to connect a contact 20 to a switch 20, and a response signal is generated by a response signal generating circuit 22 in response to the operation of the relay 19. This signal is transmitted to the response signal detecting circuit 27 of the unit 14 through the contact B of the switch 20, so that whether the electric contact is normal or abnormal is confirmed easily by an annunciating circuit 28.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connection detection device that detects connection states between a plurality of units.

There are a wide variety of devices that perform their intended functions by electrically connecting a large number of detachable units and transmitting signals between the units. Such devices utilize the elasticity of metal to achieve electrical connections between units.

However, if the elasticity of the metal 4 becomes fatigued or the metal surface becomes dirty, poor contact may occur and signal transmission will not occur normally.8 Therefore, the purpose of this invention is to be able to confirm whether the electrical connection is normal or not. The purpose is to provide a connection and knowledge device.

The present invention will be described in detail below with reference to the drawings.

Fig. 1 shows a private celebration photographing system, and according to this private photograph @ photographing system, an endoscope camera 11, a camera adapter (for example, an interchangeable lens) 12, an endoscope 13, and a light source unit I4 are installed. They are coupled via sequential connections 15, 16 and 17.

The endoscope camera 11 is provided with a control circuit 18 for controlling exposure, photographing, and the like. Eight transmission lines LZ to L4 are connected to the ttf control circuit, and two of them L
1 + L2 are directly connected to the connection part 15, and the remaining two, L3 and L4, are connected to the contact A of the relay switch 20 of the timer relay 19, respectively. In addition, transmission line L1
．． A check signal detection circuit 2I is connected to L2, and the output of this A protrusion 1 circuit 21 is connected to a timer relay 19. Contact B of the relay switch 20 is connected to the response signal generation circuit 2
Connected to 2. Contact C of relay switch 20 is connected to connection portion I5. The connection part 15 is a removable terminal or contact, and is made up of one piece, and is connected to the camera 11 and the camera adapter 12.
When connected, the transmission lines L1 to L of the camera 11
4 are electrically connected to the transmission lines L1 to L4 of the camera adapter I2, respectively.The connection parts 16 and I7 are also configured in the same manner as the connection part I5, and the camera adapter 12, the endoscope 13, and the light source unit When I4 are sequentially coupled, each transmission line L1 to L4 is electrically connected.

Transmission lines LZ to L4 of the light source unit 14 are connected to a contact C of a relay switch 24 of a timer relay 23.

The input end of the timer relay 23 is connected to a check switch 25, and the output end is connected to a check signal generation circuit 26. The output end of the check signal generation circuit 26 is connected to the transmission lines Ll and L2 by connecting the contact A of the relay switch 24. Transmission line L3. The L4 beam is connected to the input end of the response signal detection circuit 27 via the cross point A of the relay switch 24. The output end of the response signal detection circuit 27 is connected to a notification circuit 28 consisting of, for example, a display or a sounding body. Contact B of the relay switch 24 is connected to the first control circuit 29.

Next, the operation of the connection detection device of the above circuit will be explained.

After the camera 11, camera adapter 12, endoscope 13, and optical unit 14 are combined as shown in FIG. 1, the check switch 25 is first turned ON as shown in the time chart of FIG. be done. O of this switch 25
In response to N, timer marine 23 is activated, relay switch 24 is connected to contact A, and check signal generation circuit 26 is driven. The check signal generation circuit 26 generates a check signal, and this check signal is transmitted to the transmission line L1. of the light source unit 14 via the contact A. It is transmitted to L2. Transmission line L1. The check signal of L2 is sent to the transmission lines LX and L2 of the internal visual field I3 via the connection part 17, and further to the connection part 16 and the transmission line L1 of the camera adapter 12.
+ Endoscope camera I via L'2 and connection 15
It is transmitted to transmission lines Ll and L2 of I. When this check signal is detected by the check signal detection circuit 21, the check signal detection circuit 21 supplies a drive signal to the timer relay 19. Timer relay 19 operates in response to this drive signal and switches timer switch 20 to contact A. At this time, the response signal generation circuit 22 generates a response signal in response to the operation of the timer relay 19. This response signal is transmitted to the contact B1 connection portion 15 of the relay switch 20, the transmission line L3 of the camera adapter 12. L4, transmission line L3 of endoscope I3. L4, connection part 17, transmission line L3 of light source unit 14. It is transmitted to the response signal detection circuit 27 via L4 and contact A of the relay switch 24. The response signal detection circuit 27 supplies a notification signal to the notification circuit 28 in response to the response signal.

In response to the notification signal, the notification circuit 28 makes a notification indicating that the connection is normal by, for example, a sound or a light emission signal. After the set time of timer relay 23 has elapsed, timer relay 23 is reset and relay switch 24 is switched to contact B. As a result, the response signal detection circuit 27 no longer receives the response signal, so it stops generating the notification signal and stops driving the notification circuit 28.
Ru. Also, at this time, timer relay 1 of endoscope camera 11
9 is also reset and the relay switch 20 is switched to contact B. Therefore, the response signal generation circuit 22 stops generating response signals.

After confirming that the connection is normal as described above, the control circuit 18 of the endoscope camera II and the control circuit 29 of the light source unit 14
mutual data transmission is possible.

If a connection failure occurs in at least one of the connections 15, 16 and 17 and the check signal or response signal is not received by the check signal detection circuit 21 or the response signal detection circuit 27, the notification circuit 28 will be activated after the set time of the timer relay 23. A notification of a connection abnormality is issued by a sound (for example, @continue) or a light-emitting display (for example, an "NC" display).

In this case, the connections of connections 15, 16 and 17 are checked and connection faults are repaired. After repair, the connection check described above is performed again to confirm whether the connection is normal.

The endoscope camera 11 is not equipped with a power supply, and as shown in FIG.
If power is being supplied to the endoscope camera 11 via the SL, there is no need to transmit a check signal to the power line PAL.

This is because if the endoscope camera 11 is not properly supplied with power, the check signal detection circuit and the response signal generation circuit will not operate, so a connection abnormality can be confirmed.

As explained above, according to the present invention, check signal generation means and response signal generation means are provided in devices that are used in a large number of connections and perform data transmission between them, and the connection is established depending on whether the transmission of the check signal and the response signal is good or not. Since the status is confirmed, the user does not need to use measuring instruments to check the connection status, and there is no need to open the lid of the device to check the connection. You can easily check the connection even without it. Furthermore, if there is a malfunction in the equipment, it is possible to separate failures in complex control circuits and the like from failures due to poor connections, which is advantageous in terms of service.

In the above embodiment, the number of transmission lines is four, but the number is not limited to four. Moreover, it can be applied to devices other than endoscopic imaging systems.

Furthermore, the same objective can be achieved using not only a timer relay but also a logic circuit. The check signal and response signal are voltage level signals as well as time series 1111, ff□l
A signal pattern consisting of signals may also be used.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a connection detection device according to an embodiment of the present invention, FIG. 2 is a time chart diagram for explaining the operation of the circuit of FIG. 1, and FIG. FIG. 3 is a circuit diagram of the connection detection device according to the embodiment. 11... Endoscope camera, 12... Camera adapter,
13... Endoscopy bl, '4... Light source unit, 15° 16.17... Connection part, 18... Control circuit, I9...
...Timer relay, 21...Check signal detection circuit,
22...Response signal generation circuit, 23...Timer relay, 25...Check switch, 26...Check signal generation circuit, 27...Response signal detection circuit, 28...
Notification circuit, 29...control circuit. Applicant's agent Patent attorney Takehiko Suzue Figure 2 Notification circuit 28N6 Commissioner of the Japan Patent Office Kazuo Wakasugi 1. Indication of the case Patent application No. 58-79077 No. 3, Person making the amendment Relationship to the case Patent applicant (037) Orin Gus Optical Industry Co., Ltd. 5, Voluntary amendment

Claims (1)

[Claims] 1) A connection detection device for detecting the connection state of at least two units electrically connected to each other at least one detachable connection part, wherein the connection detection device is provided in one unit and generates a check signal. a check signal generating means; a means provided in the other unit for generating a response signal when a check signal transmitted from the check signal generating means via the connecting portion is horizontally narrowed; and a means provided in the one unit and generating a response signal from the response means; means for recognizing that the connection is normal when detecting a response signal transmitted through the promotion section;
A connection detection device characterized by: 1ii+. 2) The connection detection device according to claim 1, wherein the connection recognition means operates in response to a response signal and includes means for notifying that the connection is normal.