JPS5920191A - Dual-wire electricity collecting type moving object detecting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention relates to a device for detecting a two-wire current collector moving object such as a model railroad vehicle. In electric model trains and model car racing,
Generally, the model car IQ4, which is a moving object, is powered from two rails to make it run, but in addition to the rails, we also installed buildings in addition to the rails to make it more interesting. and various accessories such as signals.
It is also widely practiced to install In the case of railroad models, typical accessories include traffic lights and railroad crossings. The operation of these accessories is controlled according to the position of the vehicle, so when installing these accessories, it is first necessary to detect the position of the vehicle. Therefore, the conventional method is to install a mechanical detection switch (for example, a relay switch) at a predetermined position on the power supply rail, and the detection switch is activated when the wheels come into contact with the vehicle as it passes. and detect vehicles. However, the method using such a mechanical detection switch has the disadvantage that the rail must be processed during installation, and contact failure is likely to occur. Next, the length 2 becomes a problem when detecting a vehicle. In other words, although the length of a vehicle or train varies greatly, signals and railroad crossings always perform the same operation for trains of any length, that is, perform the necessary operations when a train enters a warning zone, and It is required that the operation continue until the train passes through the section. Therefore, in the past, sensors (detection switches) were installed on both sides of a predetermined detection section, and when the front end of the train entered the section, one sensor was activated to output a detection signal, and then the front end of the train was detected in the detection section. A proposal was made to activate another sensor and stop detection when the train leaves the area.According to this, if the train is long, even though the entire train does not pass through the warning zone in 1.1.1. First, it had the disadvantage that traffic lights and railroad crossings would become inoperable. The present invention has been made in view of the above-mentioned circumstances, and its purpose is to eliminate the need for mechanical detection means and to eliminate
To provide a device capable of detecting the position of a two-wire current collector type moving object such as a model railway vehicle, and in particular whether the moving object is located within a predetermined section, regardless of the length of the object. It's about doing. According to the present invention, the above objects are achieved by:
A predetermined section of the main power supply rail is electrically insulated from other sections as a detection section, and the two power supply rails in this detection section are connected to the power supply (as in other sections), and within the detection section. 117h When a moving object having an electrical resistance is located in the area, a current flows from one side of the power supply rail to the other through the electrical resistance, and the resulting voltage change is detected, thereby detecting the moving object within the detection area. A current collecting type moving object detection device is provided which detects the presence of a moving object.Hereinafter, an explanation will be given of an embodiment of the IC shown in the attached drawings.FIG. This shows a single-track level crossing.This level crossing has a base 2 that constitutes a road surface that crosses the rails l, and is equipped with a pair of warning devices 3a, 3b and a pair of barriers 4a, 4b on this base 2. Each of the alarms 3a and 3b has a light emitting element 5a, 5b consisting of a pair of light bulbs or light emitting diodes, respectively. The blocking frames 6a and 6b are rotatably supported at their proximal ends, and the heavy shifter 2'1 of each blocking frame (a heavy shifter a attached to the end to normally keep the blocking frame in an open state, 7b, and a blocking frame 6a in an open state.Support parts 8a and 8b each having a built-in solenoid (described later) for rotating 6b to a closed position by magnetic force, and free ends of each blocking frame 6a and 6b when closed. The bridge is composed of Y-shaped support pieces 9a and 9b that hold the bridge. Figure H2 is a railway model with the above-mentioned level crossing model attached, and 7B
This is a diagram schematically showing a part of two tracks, where the section ■ of the power supply rail 1 including the level crossing is separated from other sections by 'I+i' at the gap 10.
It is electrically insulated, and the sections (2) and (3) before and after it are also electrically insulated. Therefore, the power supply rails at this level crossing and its vicinity are, in order from the left in the figure, a normal power supply section construction, a first detection section (■) insulated from other sections, a second detection section (including the level crossing), and a similarly insulated section (■). The third detection section (2), which has been detected, and the normal power supply section (2) are separated. The power supply rails of each of the sections I, I[, 11J, and V are connected to a DC power source either directly or through the sensing device of FIG. 3 constructed according to the present invention. In other words, the two power supply rails in Fig. 2 are marked with symbols A,
B is added to distinguish the power supply rails A and B of the normal power supply sections 1 and V, respectively, which are connected to the output terminals C and D of the DC power supply for driving the model vehicle. Third
One of the power supply rails in the detection sections II and IV is connected to one output terminal C of the DC power supply through the detection circuit unit 11 shown in FIG. connected to two output ends. Also,
The power supply rail A in the second detection section ■ is located at the fourth
It is connected to a power supply via a detection circuit (unit) 12, which is partially different from that shown, and another power supply rail B is also connected to a power supply on both sides of the crossing. According to the present invention, as will be described later, by setting at least one detection section and therefore installing at least one detection circuit unit, it is possible to detect a vehicle or train in that section. The reason for setting the detection section and installing four detection circuit units fc is to enable the same operation as at an actual level crossing no matter which direction a train approaches. To explain the detection circuit unit (unit) 11 shown in FIG. 4, first, a pair of diodes D with opposite directions, and
, resistor R1 and capacitor C are read in parallel, and their -j:i+! is one of the input terminals i of the comparator 13
3a and the power supply rail A of each detection section.
connected to D, ,D, . The other ends of R1 and C are connected between two series resistors R2 and L that divide a predetermined DC constant voltage Vcc, and are also connected to the output terminal C of the power source. Another input terminal 13b of the comparator 13 is connected to VC between two further series resistors R4+R3 that divide the constant voltage Vcc. Therefore, it can be connected in parallel from power supply rail A,
, D, , l) and C to the line leading to terminal C of the power supply.
A divided voltage of Vcc by each resistor is applied to each of the two input terminals. It is a negative logic element whose output is at a relatively high potential until the difference between two inputs exceeds a predetermined value, but when the difference between the inputs exceeds a predetermined value, it generates a low voltage output. The output terminal 13c is connected to the output terminal E of the detection circuit unit 11 via a resistor. In addition, this output terminal E and the constant voltage horse. V (anti-R7) is connected between the terminal to which is applied. The values of each circuit element constituting the detection circuit unit 11 are as follows in this embodiment. Namely, the diode D, and D2 is the forward voltage drop V. is a diode with a voltage of 5 to 0.7 volts, and a resistor R1 of 471
(Ω. The capacitor C1 is 100 μF, and the resistors R2 and R5 are each lkΩ. The resistance peak and R5 are 331 (Ω and 2 kΩ, respectively) in the detection circuit unit connected to the first detection section ■ in Fig. 3.
On the contrary, in the detection circuit unit connected to the third detection section IV, the resistances are 221 (Ω) and 331 (Ω). Furthermore, the resistances are 10Ω, 1!

[Anti-1, is 4.71 (
It is Ω. Moreover, as the comparator 13, an IC (:!
A commercially available JU 18 circuit) is used, and its driving voltage is VO. =6 volts is applied. Next, as shown in FIG. 3, 12 detection circuit units connected to the second detection section
1, the voltage dividing resistors R2 and R8 on the jIg source terminal C side are omitted. However, each detection circuit unit 1
2 are commonly connected to the adjacent detection circuit unit 11 through the power supply terminal CK, so in reality, the partial voltage due to the resistor island and R3 is applied to the detection circuit unit 12 as well.
[Rain detection circuit unit] There is virtually no difference in the operation of rain detection circuit units 1 and 12. In the detection device shown in Fig. 3, the left (Il
The two detection circuits IIL and 12L are the second
The two detection circuits on the right side are connected to the right side of the railroad crossing in the third detection section ■ and the second detection section 1■. Units) IIR and 12R detect vehicles moving from right to left. Therefore, comparator 1
3 is the detection circuit unit 11L and 12Ll' on the left side. In this case, 9 currents are connected. Rail A is (-) and power supply rail B is (+).
), and in the right-hand detection circuit unit) IIR and 12R, the power supply rail A is set to output when (→, ), and the feed 1 is set so that it outputs when rail B is (→,). The detection circuit IIL will be explained with reference to FIGS. 2 and 4. First, the first detection section■
When there is no X vehicle in the tank, no current flows between the supply lines A and B, so the input terminal 13a of the comparator 13 receives a voltage V which is obtained by dividing VCC by resistors R2 and R3.
, (in this example 1.Zz = It, , =lk
Since it is Ω, V, = 3y)"rut) is added, and another 1
One input terminal 13b has a voltage vn obtained by dividing Vcc by resistors R and R3 (in this case R, = 33Ω. R11 =
221 (Vo = 2.4 volts because it is Ω) is the standard'
It is applied as a voltage. And comparator 13
is the potential difference V, -Vo between the two input terminals as described above.
as long as it does not exceed a predetermined value (0.6 is root in this case).
The output terminal 13c is at a high potential. Here, the train whose head is a powered car (vehicle equipped with a motor) is J
l Assuming that you have entered the first detection section ■ from the normal supply 'fff section ■, in this case, the right supply rail B is (+) with respect to the direction of travel, and the left supply rail A is ← )
A from the power supply rail I3 through the motor of the power vehicle.
fart? Since the Ej current flows, the first detection Ill 1ift
II supply 'tl'c Rail A 'II'l Detection port FWr Unit 11 L's D+, I)2,
Current flows in the line leading to the power supply terminal CK via the parallel connection of R+ and C3. That is, the current flows from the supply '+ff, rail A primarily through the forward diode D1, which has a predetermined forward direction. A voltage drop occurs, and the voltage drop appears as 1 voltage between both terminals of resistor R1, so the input terminal 13a of comparator 13 connected to this voltage is divided by voltage 1 due to resistor 1 and R3VC. A voltage obtained by adding the threshold voltage (■) across both terminals of the resistor R1 is applied. Therefore, the reference voltage■. The difference between the two voltages increases and the output of the comparator 13 becomes a low voltage 'T', and a detection signal is generated at the output terminal E of the detection circuit unit. In this case, the capacitor C1 operates as follows. When a model vehicle runs on a power supply rail, the motor and other electrically energized wheels of the power vehicle do not always remain in complete contact with the rail.
The contact is actually quite severe. Therefore,
The voltage across resistor R1 is not constant and tends to pulsate. Therefore, in order to smooth out this pulsating voltage, a capacitor C1 is connected, and the variation in the input voltage of the comparator 13 is suppressed by charging and discharging tIf of the capacitor C1. This continues while the vehicle having the vehicle is traveling in the first detection section (3). and,
When the vehicle leaves the first detection zone (■), the 'lit current from the power supply rail stops flowing through the detection circuit unit (IILK), so the lightning 5 voltage at its output terminal E returns to its original high level. Units) 1] The detection signal from L is input to the solenoid excitation circuit shown in Figure 5 and the light emission and sound generation control circuit shown in Figure 6 to operate the barrier and alarm at the level crossing. This will be discussed later. Next, when the vehicle enters the second detection section at, the detection circuit unit 12L on the left side shown as NX3 IC operates for this detection section, that is, this detection circuit The unit 12L outputs a detection signal based on the current flowing from the power supply rail A to the power supply terminal C, as in the detection circuit unit ILL for the first detection section H. In this case, the other detection circuit unit 12R connected to the power supply rail of the second detection section [1 is not operated by the current flowing from the power supply rail toward the power supply terminal C. This is because the comparator 13 of this detection circuit unit 12R is the y+1 detection circuit unit)ILL.
and 12L, the voltage V1 at one input terminal 13a is the voltage V at the reference input terminal 13b. Therefore, the detection circuit unit 12R connects the diode D2 from the power supply terminal C.
This is because a detection signal is output when current flows through the power supply rail 8 to the power supply rail 8. Then, in Figure 2, move towards the vehicle moving from left to right.
l. When entering the first detection section ■, it is detected by the detection circuit unit) IIL corresponding to this section and operates the level crossing, and then when exiting from the exit section ■ in section 2. , this section Vkoda・↑corresponding detection circuit unit) 12
The detection signal from L is stopped. At this time, the vehicle
The detection circuit unit 11R corresponding to this detection section is the detection circuit unit (the above-mentioned detection circuit unit).
12 Similar to R, the detection 1ω1 operation is not performed for vehicles moving from left to right, so if the vehicle is in the second detection section I
As soon as you exit the ll, the crossing operation will stop. 10,000, 111 from right to left in Figure 2. The tank is (!i
In this case, contrary to the above, when the vehicle enters the third detection section (3), the detection circuit unit (11R) corresponding to this section outputs a detection signal to operate the level crossing, and then the vehicle When exits from the left end of the second detection section (2), the crossing operation is stopped by the detection signal from the detection circuit unit (12R) corresponding to this section. In this case, the two left detection circuit units) IIL and 12L do not detect the vehicle. As described above, according to the detection device row in FIG.
No matter which direction a vehicle moves to the left or right at the WJil railroad crossing, the vehicle is detected at a position well in front of the railroad crossing and ν2 is detected.
It is possible to perform the same realistic operation as the real thing, such as activating one level crossing and canceling the operation when the vehicle passes the level crossing.In the above explanation, the motor is installed as a vehicle with electrical resistance. Although a powered car is shown as an example, since a powered car is usually positioned at the front of the train,
This makes it possible to detect the entry of a train into the detection section. In addition, the detection that the train has left the detection area is as follows:
Normally, this can be done by a vehicle located at the tail end of a train that has electrical resistance such as a tail light. Furthermore, if the train is long and longer than one detection section, a vehicle having an interior light or other energized member may be placed in the middle of the train. By the way, on a track that includes a level crossing as shown in Figure 1, vehicles not only travel in the detection area, but also sometimes stop within the detection area, and in this case, the level crossing also issues an alarm and activates the barrier. It has to be running. However, the above detection circuit unit has a current b between the power supply rule.
Since it is configured to generate a detection signal based on lr, h, koto & iZ, it is especially desirable to detect when the motor vehicle is stopped tl=. Therefore, in order to generate a detection signal even in such a case, for the detection circuit unit, as shown in FIG.
), and the other 9fi, l, power supply rail A.
31i' moving towards the power supply terminal C is detected by l' (that is, a vehicle traveling from left to right is detected).
In this case, a constant voltage is applied and the current is detected in 1 to 4 directions (i.e., a vehicle traveling from right to left is detected).
If so, ground it. This 1. Therefore, even if a vehicle is stopped within the detection zone, a current that does not cause the motor of the rib rickshaw to run even once can be passed.
Therefore, a detection signal can be output. Next, a description will be given of a tearing operation in which the crossing gates 4a, 41) and alarms 3a, 3b of the railroad crossing shown in FIG. 1 are activated by the detected fH signal output from the detection device shown in FIG. 3. First, the solenoids for rotating the cutoff rods 6a and 6b of the breakers 4a and 4b are excited by, for example, a circuit shown in FIG. This solenoid excitation circuit consists of a PNP transistor 21 with a pulse connected to the output terminal E of the detection device, a resistor 22 marked with the collector VCI I, and an NPN transistor 21 with a pulse connected to this resistor. 23 and a protective diode 24 connected to its collector, and the solenoid 25 is connected in parallel with the diode 24. A constant voltage Vco is applied to the emitter of the transistor 21, and a solenoid excitation voltage d is applied to the collector side of the transistor 23. Therefore, when the detection device ili outputs a low pressure detection signal, the pace voltage of the transistor 21 decreases and this transistor 21 is turned on, which also turns on the transistor 23, so that current flows to the solenoid 25. , solenoid 25 is energized. For this reason, each blocking rod 6A is in the open position of FIG. 6bi:J, the crossing is turned to the closed position by the respective solenoids, and the crossing is in the closed state 1. This closed state continues as long as the detection signal from the detection device shown in FIG. 3 is output. FIG. 6 shows an example of a circuit that causes the pair of light emitting elements 5a, 5b of each warning device 3a, 3b at the railroad crossing to blink and at the same time generates a bone warning sound. This light emission and sound generation control circuit is the third
[Output terminal of the detection load shown in the figure] It operates when the PNP transistor 21 connected to CK (this is shared with the solenoid excitation circuit in Fig. 5) is turned on by the detection signal; when the transistor 21 is turned on, the 2 N A
N I) The light emission blinking oscillation circuit 33 including the elements 31 and 32 generates a pulse 1. from each NAND element 31 and 32. 'T (phases deviated from each other by 180 degrees) make each pair of light emitting elements 5a and 5b alternately blink. At the same time, the planned NOT element (inverter) 34
The sound generating element drive circuit 37 drives the sound generating element 38 intermittently by a pulse signal from the sound generating oscillation circuit 36 containing the sound generating circuit 36 and 35, and in synchronization with the blinking by a signal from the light emitting blinking oscillating circuit 33. ? , F*H sound is generated. As described below, as an embodiment of the present invention, a railway model
I explained the detection device for operating the Q-off, but
The present invention is not limited to this, but can be widely applied to detection of a two-wire current collection type moving object moving on a power supply rail. Also, especially when used for railway model railroad crossings and traffic lights, the first
The detection device shown in FIG. 3 can be applied not only to the single-track track shown in the figures and FIG. 2, but also to double-track tracks. In other words, in the case of double tracks, the directions of train travel are usually set to be opposite to each other on each track.
Pairs 11L of detection circuit units corresponding to each direction of travel
and 12L, 11R & 12R should be connected to each line. In any case, according to the detection device of the present invention, the current flowing through the supply 'IEf rail of the detection section causes the
Since it detects objects, it can reliably detect moving objects regardless of the size of the moving object, and when used, it can be used to create the same realistic jQ!I work as the real thing. can be set.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a model railroad crossing operated by the detection device of the present invention. Figure 8g2 is a schematic diagram of a model railway track with a railroad crossing in h. FIG. 3 is a circuit diagram of the detection device. FIG. 4 is a diagram showing a detection circuit unit constituting the detection device. FIG. 5 is a diagram showing a solenoid excitation circuit for operating the barrier of the above-mentioned railroad crossing in FIG. 1, and FIG. 6 is a diagram showing a light emission and sound generation control circuit for the above-mentioned railroad crossing. 1... Power supply rail, 2... Level crossing model base, 3a and 3b... Alarm, 4a and 4b... Circuit breaker, 5a
and 5b... light emitting element, 1o... gap, 11 and 12... detection 00g unit, 13... controller 7, Ministry of Procedure and Correction (Method) November 12, 1972 special Director-General of the Agency 1 Display of case Showa 057 special ff) j Tateishi 7-9 @ No. 10 (358) Tommye Co., Ltd. 4, Representative Hitto'g, Tateishi 7-9-10, Katsushika-ku, Miyako 1988
July 7th 6 Details subject to amendment 4 Pages 8 to 19 7 Contents of amendment

Claims (1)

[Claims] A device for detecting a two-wire current collector type moving object moving on two power supply rails, wherein a predetermined section of the power supply rail is electrically insulated from other sections as a detection section, and the detection section is The two power supply rails are connected to the power supply as in other sections,
When a moving object having electrical resistance is located within the detection section, a voltage change caused by a current flowing from one side of the power supply rail to the other through the electrical resistance is detected, and as a result, the A two-wire current collector type moving object detection device that detects the presence of moving objects.